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-rw-r--r--framework/Web/UI/TControl.php4790
1 files changed, 2395 insertions, 2395 deletions
diff --git a/framework/Web/UI/TControl.php b/framework/Web/UI/TControl.php
index 316098a1..2adabb55 100644
--- a/framework/Web/UI/TControl.php
+++ b/framework/Web/UI/TControl.php
@@ -1,2395 +1,2395 @@
-<?php
-/**
- * TControl, TControlCollection, TEventParameter and INamingContainer class file
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @link http://www.pradosoft.com/
- * @copyright Copyright &copy; 2005-2012 PradoSoft
- * @license http://www.pradosoft.com/license/
- * @version $Id$
- * @package System.Web.UI
- */
-
-/**
- * Includes TAttributeCollection and TControlAdapter class
- */
-Prado::using('System.Collections.TAttributeCollection');
-Prado::using('System.Web.UI.TControlAdapter');
-
-/**
- * TControl class
- *
- * TControl is the base class for all components on a page hierarchy.
- * It implements the following features for UI-related functionalities:
- * - databinding feature
- * - parent and child relationship
- * - naming container and containee relationship
- * - viewstate and controlstate features
- * - rendering scheme
- * - control lifecycles
- *
- * A property can be data-bound with an expression. By calling {@link dataBind},
- * expressions bound to properties will be evaluated and the results will be
- * set to the corresponding properties.
- *
- * Parent and child relationship determines how the presentation of controls are
- * enclosed within each other. A parent will determine where to place
- * the presentation of its child controls. For example, a TPanel will enclose
- * all its child controls' presentation within a div html tag. A control's parent
- * can be obtained via {@link getParent Parent} property, and its
- * {@link getControls Controls} property returns a list of the control's children,
- * including controls and static texts. The property can be manipulated
- * like an array for adding or removing a child (see {@link TList} for more details).
- *
- * A naming container control implements INamingContainer and ensures that
- * its containee controls can be differentiated by their ID property values.
- * Naming container and containee realtionship specifies a protocol to uniquely
- * identify an arbitrary control on a page hierarchy by an ID path (concatenation
- * of all naming containers' IDs and the target control's ID).
- *
- * Viewstate and controlstate are two approaches to preserve state across
- * page postback requests. ViewState is mainly related with UI specific state
- * and can be disabled if not needed. ControlState represents crucial logic state
- * and cannot be disabled.
- *
- * A control is rendered via its {@link render()} method (the method is invoked
- * by the framework.) Descendant control classes may override this method for
- * customized rendering. By default, {@link render()} invokes {@link renderChildren()}
- * which is responsible for rendering of children of the control.
- * Control's {@link getVisible Visible} property governs whether the control
- * should be rendered or not.
- *
- * Each control on a page will undergo a series of lifecycles, including
- * control construction, Init, Load, PreRender, Render, and OnUnload.
- * They work together with page lifecycles to process a page request.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-class TControl extends TApplicationComponent implements IRenderable, IBindable
-{
- /**
- * format of control ID
- */
- const ID_FORMAT='/^[a-zA-Z_]\\w*$/';
- /**
- * separator char between IDs in a UniqueID
- */
- const ID_SEPARATOR='$';
- /**
- * separator char between IDs in a ClientID
- */
- const CLIENT_ID_SEPARATOR='_';
- /**
- * prefix to an ID automatically generated
- */
- const AUTOMATIC_ID_PREFIX='ctl';
-
- /**
- * the stage of lifecycles that the control is currently at
- */
- const CS_CONSTRUCTED=0;
- const CS_CHILD_INITIALIZED=1;
- const CS_INITIALIZED=2;
- const CS_STATE_LOADED=3;
- const CS_LOADED=4;
- const CS_PRERENDERED=5;
-
- /**
- * State bits.
- */
- const IS_ID_SET=0x01;
- const IS_DISABLE_VIEWSTATE=0x02;
- const IS_SKIN_APPLIED=0x04;
- const IS_STYLESHEET_APPLIED=0x08;
- const IS_DISABLE_THEMING=0x10;
- const IS_CHILD_CREATED=0x20;
- const IS_CREATING_CHILD=0x40;
-
- /**
- * Indexes for the rare fields.
- * In order to save memory, rare fields will only be created if they are needed.
- */
- const RF_CONTROLS=0; // child controls
- const RF_CHILD_STATE=1; // child state field
- const RF_NAMED_CONTROLS=2; // list of controls whose namingcontainer is this control
- const RF_NAMED_CONTROLS_ID=3; // counter for automatic id
- const RF_SKIN_ID=4; // skin ID
- const RF_DATA_BINDINGS=5; // data bindings
- const RF_EVENTS=6; // event handlers
- const RF_CONTROLSTATE=7; // controlstate
- const RF_NAMED_OBJECTS=8; // controls declared with ID on template
- const RF_ADAPTER=9; // adapter
- const RF_AUTO_BINDINGS=10; // auto data bindings
-
- /**
- * @var string control ID
- */
- private $_id='';
- /**
- * @var string control unique ID
- */
- private $_uid;
- /**
- * @var TControl parent of the control
- */
- private $_parent;
- /**
- * @var TPage page that the control resides in
- */
- private $_page;
- /**
- * @var TControl naming container of the control
- */
- private $_namingContainer;
- /**
- * @var TTemplateControl control whose template contains the control
- */
- private $_tplControl;
- /**
- * @var array viewstate data
- */
- private $_viewState=array();
- /**
- * @var array temporary state (usually set in template)
- */
- private $_tempState=array();
- /**
- * @var boolean whether we should keep state in viewstate
- */
- private $_trackViewState=true;
- /**
- * @var integer the current stage of the control lifecycles
- */
- private $_stage=0;
- /**
- * @var integer representation of the state bits
- */
- private $_flags=0;
- /**
- * @var array a collection of rare control data
- */
- private $_rf=array();
-
- /**
- * Constructor.
- */
- public function __construct()
- {
- }
-
- /**
- * Returns a property value by name or a control by ID.
- * This overrides the parent implementation by allowing accessing
- * a control via its ID using the following syntax,
- * <code>
- * $menuBar=$this->menuBar;
- * </code>
- * Note, the control must be configured in the template
- * with explicit ID. If the name matches both a property and a control ID,
- * the control ID will take the precedence.
- *
- * @param string the property name or control ID
- * @return mixed the property value or the target control
- * @throws TInvalidOperationException if the property is not defined.
- * @see registerObject
- */
- public function __get($name)
- {
- if(isset($this->_rf[self::RF_NAMED_OBJECTS][$name]))
- return $this->_rf[self::RF_NAMED_OBJECTS][$name];
- else
- return parent::__get($name);
- }
-
- /**
- * @return boolean whether there is an adapter for this control
- */
- public function getHasAdapter()
- {
- return isset($this->_rf[self::RF_ADAPTER]);
- }
-
- /**
- * @return TControlAdapter control adapter. Null if not exists.
- */
- public function getAdapter()
- {
- return isset($this->_rf[self::RF_ADAPTER])?$this->_rf[self::RF_ADAPTER]:null;
- }
-
- /**
- * @param TControlAdapter control adapter
- */
- public function setAdapter(TControlAdapter $adapter)
- {
- $this->_rf[self::RF_ADAPTER]=$adapter;
- }
-
- /**
- * @return TControl the parent of this control
- */
- public function getParent()
- {
- return $this->_parent;
- }
-
- /**
- * @return TControl the naming container of this control
- */
- public function getNamingContainer()
- {
- if(!$this->_namingContainer && $this->_parent)
- {
- if($this->_parent instanceof INamingContainer)
- $this->_namingContainer=$this->_parent;
- else
- $this->_namingContainer=$this->_parent->getNamingContainer();
- }
- return $this->_namingContainer;
- }
-
- /**
- * @return TPage the page that contains this control
- */
- public function getPage()
- {
- if(!$this->_page)
- {
- if($this->_parent)
- $this->_page=$this->_parent->getPage();
- else if($this->_tplControl)
- $this->_page=$this->_tplControl->getPage();
- }
- return $this->_page;
- }
-
- /**
- * Sets the page for a control.
- * Only framework developers should use this method.
- * @param TPage the page that contains this control
- */
- public function setPage($page)
- {
- $this->_page=$page;
- }
-
- /**
- * Sets the control whose template contains this control.
- * Only framework developers should use this method.
- * @param TTemplateControl the control whose template contains this control
- */
- public function setTemplateControl($control)
- {
- $this->_tplControl=$control;
- }
-
- /**
- * @return TTemplateControl the control whose template contains this control
- */
- public function getTemplateControl()
- {
- if(!$this->_tplControl && $this->_parent)
- $this->_tplControl=$this->_parent->getTemplateControl();
- return $this->_tplControl;
- }
-
- /**
- * @return TTemplateControl the control whose template is loaded from
- * some external storage, such as file, db, and whose template ultimately
- * contains this control.
- */
- public function getSourceTemplateControl()
- {
- $control=$this;
- while(($control instanceof TControl) && ($control=$control->getTemplateControl())!==null)
- {
- if(($control instanceof TTemplateControl) && $control->getIsSourceTemplateControl())
- return $control;
- }
- return $this->getPage();
- }
-
- /**
- * Gets the lifecycle step the control is currently at.
- * This method should only be used by control developers.
- * @return integer the lifecycle step the control is currently at.
- * The value can be CS_CONSTRUCTED, CS_CHILD_INITIALIZED, CS_INITIALIZED,
- * CS_STATE_LOADED, CS_LOADED, CS_PRERENDERED.
- */
- protected function getControlStage()
- {
- return $this->_stage;
- }
-
- /**
- * Sets the lifecycle step the control is currently at.
- * This method should only be used by control developers.
- * @param integer the lifecycle step the control is currently at.
- * Valid values include CS_CONSTRUCTED, CS_CHILD_INITIALIZED, CS_INITIALIZED,
- * CS_STATE_LOADED, CS_LOADED, CS_PRERENDERED.
- */
- protected function setControlStage($value)
- {
- $this->_stage=$value;
- }
-
- /**
- * Returns the id of the control.
- * Control ID can be either manually set or automatically generated.
- * If $hideAutoID is true, automatically generated ID will be returned as an empty string.
- * @param boolean whether to hide automatically generated ID
- * @return string the ID of the control
- */
- public function getID($hideAutoID=true)
- {
- if($hideAutoID)
- return ($this->_flags & self::IS_ID_SET) ? $this->_id : '';
- else
- return $this->_id;
- }
-
- /**
- * @param string the new control ID. The value must consist of word characters [a-zA-Z0-9_] only
- * @throws TInvalidDataValueException if ID is in a bad format
- */
- public function setID($id)
- {
- if(!preg_match(self::ID_FORMAT,$id))
- throw new TInvalidDataValueException('control_id_invalid',get_class($this),$id);
- $this->_id=$id;
- $this->_flags |= self::IS_ID_SET;
- $this->clearCachedUniqueID($this instanceof INamingContainer);
- if($this->_namingContainer)
- $this->_namingContainer->clearNameTable();
- }
-
- /**
- * Returns a unique ID that identifies the control in the page hierarchy.
- * A unique ID is the contenation of all naming container controls' IDs and the control ID.
- * These IDs are separated by '$' character.
- * Control users should not rely on the specific format of UniqueID, however.
- * @return string a unique ID that identifies the control in the page hierarchy
- */
- public function getUniqueID()
- {
- if($this->_uid==='' || $this->_uid===null) // need to build the UniqueID
- {
- $this->_uid=''; // set to not-null, so that clearCachedUniqueID() may take action
- if($namingContainer=$this->getNamingContainer())
- {
- if($this->getPage()===$namingContainer)
- return ($this->_uid=$this->_id);
- else if(($prefix=$namingContainer->getUniqueID())==='')
- return $this->_id;
- else
- return ($this->_uid=$prefix.self::ID_SEPARATOR.$this->_id);
- }
- else // no naming container
- return $this->_id;
- }
- else
- return $this->_uid;
- }
-
- /**
- * Sets input focus to this control.
- */
- public function focus()
- {
- $this->getPage()->setFocus($this);
- }
-
- /**
- * Returns the client ID of the control.
- * The client ID can be used to uniquely identify
- * the control in client-side scripts (such as JavaScript).
- * Do not rely on the explicit format of the return ID.
- * @return string the client ID of the control
- */
- public function getClientID()
- {
- return strtr($this->getUniqueID(),self::ID_SEPARATOR,self::CLIENT_ID_SEPARATOR);
- }
-
- /**
- * Converts a unique ID to a client ID.
- * @param string the unique ID of a control
- * @return string the client ID of the control
- */
- public static function convertUniqueIdToClientId($uniqueID)
- {
- return strtr($uniqueID,self::ID_SEPARATOR,self::CLIENT_ID_SEPARATOR);
- }
-
- /**
- * @return string the skin ID of this control, '' if not set
- */
- public function getSkinID()
- {
- return isset($this->_rf[self::RF_SKIN_ID])?$this->_rf[self::RF_SKIN_ID]:'';
- }
-
- /**
- * @param string the skin ID of this control
- * @throws TInvalidOperationException if the SkinID is set in a stage later than PreInit, or if the skin is applied already.
- */
- public function setSkinID($value)
- {
- if(($this->_flags & self::IS_SKIN_APPLIED) || $this->_stage>=self::CS_CHILD_INITIALIZED)
- throw new TInvalidOperationException('control_skinid_unchangeable',get_class($this));
- else
- $this->_rf[self::RF_SKIN_ID]=$value;
- }
-
- /**
- * @param string the skin ID of this control
- * @throws TInvalidOperationException if the SkinID is set in a stage later than PreInit, or if the skin is applied already.
- */
- public function getIsSkinApplied()
- {
- return ($this->_flags & self::IS_SKIN_APPLIED);
- }
-
- /**
- * @return boolean whether theming is enabled for this control.
- * The theming is enabled if the control and all its parents have it enabled.
- */
- public function getEnableTheming()
- {
- if($this->_flags & self::IS_DISABLE_THEMING)
- return false;
- else
- return $this->_parent?$this->_parent->getEnableTheming():true;
- }
-
- /**
- * @param boolean whether to enable theming
- * @throws TInvalidOperationException if this method is invoked after OnPreInit
- */
- public function setEnableTheming($value)
- {
- if($this->_stage>=self::CS_CHILD_INITIALIZED)
- throw new TInvalidOperationException('control_enabletheming_unchangeable',get_class($this),$this->getUniqueID());
- else if(TPropertyValue::ensureBoolean($value))
- $this->_flags &= ~self::IS_DISABLE_THEMING;
- else
- $this->_flags |= self::IS_DISABLE_THEMING;
- }
-
- /**
- * Returns custom data associated with this control.
- * A control may be associated with some custom data for various purposes.
- * For example, a button may be associated with a string to identify itself
- * in a generic OnClick event handler.
- * @return mixed custom data associated with this control. Defaults to null.
- */
- public function getCustomData()
- {
- return $this->getViewState('CustomData',null);
- }
-
- /**
- * Associates custom data with this control.
- * Note, the custom data must be serializable and unserializable.
- * @param mixed custom data
- */
- public function setCustomData($value)
- {
- $this->setViewState('CustomData',$value,null);
- }
-
- /**
- * @return boolean whether the control has child controls
- */
- public function getHasControls()
- {
- return isset($this->_rf[self::RF_CONTROLS]) && $this->_rf[self::RF_CONTROLS]->getCount()>0;
- }
-
- /**
- * @return TControlCollection the child control collection
- */
- public function getControls()
- {
- if(!isset($this->_rf[self::RF_CONTROLS]))
- $this->_rf[self::RF_CONTROLS]=$this->createControlCollection();
- return $this->_rf[self::RF_CONTROLS];
- }
-
- /**
- * Creates a control collection object that is to be used to hold child controls
- * @return TControlCollection control collection
- * @see getControls
- */
- protected function createControlCollection()
- {
- return $this->getAllowChildControls()?new TControlCollection($this):new TEmptyControlCollection($this);
- }
-
- /**
- * Checks if a control is visible.
- * If parent check is required, then a control is visible only if the control
- * and all its ancestors are visible.
- * @param boolean whether the parents should also be checked if visible
- * @return boolean whether the control is visible (default=true).
- */
- public function getVisible($checkParents=true)
- {
- if($checkParents)
- {
- for($control=$this;$control;$control=$control->_parent)
- if(!$control->getVisible(false))
- return false;
- return true;
- }
- else
- return $this->getViewState('Visible',true);
- }
-
- /**
- * @param boolean whether the control is visible
- */
- public function setVisible($value)
- {
- $this->setViewState('Visible',TPropertyValue::ensureBoolean($value),true);
- }
-
- /**
- * Returns a value indicating whether the control is enabled.
- * A control is enabled if it allows client user interaction.
- * If $checkParents is true, all parent controls will be checked,
- * and unless they are all enabled, false will be returned.
- * The property Enabled is mainly used for {@link TWebControl}
- * derived controls.
- * @param boolean whether the parents should also be checked enabled
- * @return boolean whether the control is enabled.
- */
- public function getEnabled($checkParents=false)
- {
- if($checkParents)
- {
- for($control=$this;$control;$control=$control->_parent)
- if(!$control->getViewState('Enabled',true))
- return false;
- return true;
- }
- else
- return $this->getViewState('Enabled',true);
- }
-
- /**
- * @param boolean whether the control is to be enabled.
- */
- public function setEnabled($value)
- {
- $this->setViewState('Enabled',TPropertyValue::ensureBoolean($value),true);
- }
-
- /**
- * @return boolean whether the control has custom attributes
- */
- public function getHasAttributes()
- {
- if($attributes=$this->getViewState('Attributes',null))
- return $attributes->getCount()>0;
- else
- return false;
- }
-
- /**
- * Returns the list of custom attributes.
- * Custom attributes are name-value pairs that may be rendered
- * as HTML tags' attributes.
- * @return TAttributeCollection the list of custom attributes
- */
- public function getAttributes()
- {
- if($attributes=$this->getViewState('Attributes',null))
- return $attributes;
- else
- {
- $attributes=new TAttributeCollection;
- $this->setViewState('Attributes',$attributes,null);
- return $attributes;
- }
- }
-
- /**
- * @return boolean whether the named attribute exists
- */
- public function hasAttribute($name)
- {
- if($attributes=$this->getViewState('Attributes',null))
- return $attributes->contains($name);
- else
- return false;
- }
-
- /**
- * @return string attribute value, null if attribute does not exist
- */
- public function getAttribute($name)
- {
- if($attributes=$this->getViewState('Attributes',null))
- return $attributes->itemAt($name);
- else
- return null;
- }
-
- /**
- * Sets a custom control attribute.
- * @param string attribute name
- * @param string value of the attribute
- */
- public function setAttribute($name,$value)
- {
- $this->getAttributes()->add($name,$value);
- }
-
- /**
- * Removes the named attribute.
- * @param string the name of the attribute to be removed.
- * @return string attribute value removed, null if attribute does not exist.
- */
- public function removeAttribute($name)
- {
- if($attributes=$this->getViewState('Attributes',null))
- return $attributes->remove($name);
- else
- return null;
- }
-
- /**
- * @return boolean whether viewstate is enabled
- */
- public function getEnableViewState($checkParents=false)
- {
- if($checkParents)
- {
- for($control=$this;$control!==null;$control=$control->getParent())
- if($control->_flags & self::IS_DISABLE_VIEWSTATE)
- return false;
- return true;
- }
- else
- return !($this->_flags & self::IS_DISABLE_VIEWSTATE);
- }
-
- /**
- * @param boolean set whether to enable viewstate
- */
- public function setEnableViewState($value)
- {
- if(TPropertyValue::ensureBoolean($value))
- $this->_flags &= ~self::IS_DISABLE_VIEWSTATE;
- else
- $this->_flags |= self::IS_DISABLE_VIEWSTATE;
- }
-
- /**
- * Returns a controlstate value.
- *
- * This function is mainly used in defining getter functions for control properties
- * that must be kept in controlstate.
- * @param string the name of the controlstate value to be returned
- * @param mixed the default value. If $key is not found in controlstate, $defaultValue will be returned
- * @return mixed the controlstate value corresponding to $key
- */
- protected function getControlState($key,$defaultValue=null)
- {
- return isset($this->_rf[self::RF_CONTROLSTATE][$key])?$this->_rf[self::RF_CONTROLSTATE][$key]:$defaultValue;
- }
-
- /**
- * Sets a controlstate value.
- *
- * This function is very useful in defining setter functions for control properties
- * that must be kept in controlstate.
- * Make sure that the controlstate value must be serializable and unserializable.
- * @param string the name of the controlstate value
- * @param mixed the controlstate value to be set
- * @param mixed default value. If $value===$defaultValue, the item will be cleared from controlstate
- */
- protected function setControlState($key,$value,$defaultValue=null)
- {
- if($value===$defaultValue)
- unset($this->_rf[self::RF_CONTROLSTATE][$key]);
- else
- $this->_rf[self::RF_CONTROLSTATE][$key]=$value;
- }
-
- /**
- * Clears a controlstate value.
- * @param string the name of the controlstate value to be cleared
- */
- protected function clearControlState($key)
- {
- unset($this->_rf[self::RF_CONTROLSTATE][$key]);
- }
-
- /**
- * Sets a value indicating whether we should keep data in viewstate.
- * When it is false, data saved via setViewState() will not be persisted.
- * By default, it is true, meaning data will be persisted across postbacks.
- * @param boolean whether data should be persisted
- */
- public function trackViewState($enabled)
- {
- $this->_trackViewState=TPropertyValue::ensureBoolean($enabled);
- }
-
- /**
- * Returns a viewstate value.
- *
- * This function is very useful in defining getter functions for component properties
- * that must be kept in viewstate.
- * @param string the name of the viewstate value to be returned
- * @param mixed the default value. If $key is not found in viewstate, $defaultValue will be returned
- * @return mixed the viewstate value corresponding to $key
- */
- public function getViewState($key,$defaultValue=null)
- {
- if(isset($this->_viewState[$key]))
- return $this->_viewState[$key]!==null?$this->_viewState[$key]:$defaultValue;
- else if(isset($this->_tempState[$key]))
- {
- if(is_object($this->_tempState[$key]) && $this->_trackViewState)
- $this->_viewState[$key]=$this->_tempState[$key];
- return $this->_tempState[$key];
- }
- else
- return $defaultValue;
- }
-
- /**
- * Sets a viewstate value.
- *
- * This function is very useful in defining setter functions for control properties
- * that must be kept in viewstate.
- * Make sure that the viewstate value must be serializable and unserializable.
- * @param string the name of the viewstate value
- * @param mixed the viewstate value to be set
- * @param mixed default value. If $value===$defaultValue, the item will be cleared from the viewstate.
- */
- public function setViewState($key,$value,$defaultValue=null)
- {
- if($this->_trackViewState)
- {
- $this->_viewState[$key]=$value;
- unset($this->_tempState[$key]);
- }
- else
- {
- unset($this->_viewState[$key]);
- $this->_tempState[$key]=$value;
- }
- }
-
- /**
- * Clears a viewstate value.
- * @param string the name of the viewstate value to be cleared
- */
- public function clearViewState($key)
- {
- unset($this->_viewState[$key]);
- unset($this->_tempState[$key]);
- }
-
- /**
- * Sets up the binding between a property (or property path) and an expression.
- * The context of the expression is the template control (or the control itself if it is a page).
- * @param string the property name, or property path
- * @param string the expression
- */
- public function bindProperty($name,$expression)
- {
- $this->_rf[self::RF_DATA_BINDINGS][$name]=$expression;
- }
-
- /**
- * Breaks the binding between a property (or property path) and an expression.
- * @param string the property name (or property path)
- */
- public function unbindProperty($name)
- {
- unset($this->_rf[self::RF_DATA_BINDINGS][$name]);
- }
-
- /**
- * Sets up the binding between a property (or property path) and an expression.
- * Unlike regular databinding, the expression bound by this method
- * is automatically evaluated during {@link prerenderRecursive()}.
- * The context of the expression is the template control (or the control itself if it is a page).
- * @param string the property name, or property path
- * @param string the expression
- */
- public function autoBindProperty($name,$expression)
- {
- $this->_rf[self::RF_AUTO_BINDINGS][$name]=$expression;
- }
-
- /**
- * Performs the databinding for this control.
- */
- public function dataBind()
- {
- $this->dataBindProperties();
- $this->onDataBinding(null);
- $this->dataBindChildren();
- }
-
- /**
- * Databinding properties of the control.
- */
- protected function dataBindProperties()
- {
- Prado::trace("Data bind properties",'System.Web.UI.TControl');
- if(isset($this->_rf[self::RF_DATA_BINDINGS]))
- {
- if(($context=$this->getTemplateControl())===null)
- $context=$this;
- foreach($this->_rf[self::RF_DATA_BINDINGS] as $property=>$expression)
- $this->setSubProperty($property,$context->evaluateExpression($expression));
- }
- }
-
- /**
- * Auto databinding properties of the control.
- */
- protected function autoDataBindProperties()
- {
- if(isset($this->_rf[self::RF_AUTO_BINDINGS]))
- {
- if(($context=$this->getTemplateControl())===null)
- $context=$this;
- foreach($this->_rf[self::RF_AUTO_BINDINGS] as $property=>$expression)
- $this->setSubProperty($property,$context->evaluateExpression($expression));
- }
- }
-
- /**
- * Databinding child controls.
- */
- protected function dataBindChildren()
- {
- Prado::trace("dataBindChildren()",'System.Web.UI.TControl');
- if(isset($this->_rf[self::RF_CONTROLS]))
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- if($control instanceof IBindable)
- $control->dataBind();
- }
- }
-
- /**
- * @return boolean whether child controls have been created
- */
- final protected function getChildControlsCreated()
- {
- return ($this->_flags & self::IS_CHILD_CREATED)!==0;
- }
-
- /**
- * Sets a value indicating whether child controls are created.
- * If false, any existing child controls will be cleared up.
- * @param boolean whether child controls are created
- */
- final protected function setChildControlsCreated($value)
- {
- if($value)
- $this->_flags |= self::IS_CHILD_CREATED;
- else
- {
- if($this->getHasControls() && ($this->_flags & self::IS_CHILD_CREATED))
- $this->getControls()->clear();
- $this->_flags &= ~self::IS_CHILD_CREATED;
- }
- }
-
- /**
- * Ensures child controls are created.
- * If child controls are not created yet, this method will invoke
- * {@link createChildControls} to create them.
- */
- public function ensureChildControls()
- {
- if(!($this->_flags & self::IS_CHILD_CREATED) && !($this->_flags & self::IS_CREATING_CHILD))
- {
- try
- {
- $this->_flags |= self::IS_CREATING_CHILD;
- if(isset($this->_rf[self::RF_ADAPTER]))
- $this->_rf[self::RF_ADAPTER]->createChildControls();
- else
- $this->createChildControls();
- $this->_flags &= ~self::IS_CREATING_CHILD;
- $this->_flags |= self::IS_CHILD_CREATED;
- }
- catch(Exception $e)
- {
- $this->_flags &= ~self::IS_CREATING_CHILD;
- $this->_flags |= self::IS_CHILD_CREATED;
- throw $e;
- }
- }
- }
-
- /**
- * Creates child controls.
- * This method can be overriden for controls who want to have their controls.
- * Do not call this method directly. Instead, call {@link ensureChildControls}
- * to ensure child controls are created only once.
- */
- public function createChildControls()
- {
- }
-
- /**
- * Finds a control by ID path within the current naming container.
- * The current naming container is either the control itself
- * if it implements {@link INamingContainer} or the control's naming container.
- * The ID path is an ID sequence separated by {@link TControl::ID_SEPARATOR}.
- * For example, 'Repeater1.Item1.Button1' looks for a control with ID 'Button1'
- * whose naming container is 'Item1' whose naming container is 'Repeater1'.
- * @param string ID of the control to be looked up
- * @return TControl|null the control found, null if not found
- * @throws TInvalidDataValueException if a control's ID is found not unique within its naming container.
- */
- public function findControl($id)
- {
- $id=strtr($id,'.',self::ID_SEPARATOR);
- $container=($this instanceof INamingContainer)?$this:$this->getNamingContainer();
- if(!$container || !$container->getHasControls())
- return null;
- if(!isset($container->_rf[self::RF_NAMED_CONTROLS]))
- {
- $container->_rf[self::RF_NAMED_CONTROLS]=array();
- $container->fillNameTable($container,$container->_rf[self::RF_CONTROLS]);
- }
- if(($pos=strpos($id,self::ID_SEPARATOR))===false)
- return isset($container->_rf[self::RF_NAMED_CONTROLS][$id])?$container->_rf[self::RF_NAMED_CONTROLS][$id]:null;
- else
- {
- $cid=substr($id,0,$pos);
- $sid=substr($id,$pos+1);
- if(isset($container->_rf[self::RF_NAMED_CONTROLS][$cid]))
- return $container->_rf[self::RF_NAMED_CONTROLS][$cid]->findControl($sid);
- else
- return null;
- }
- }
-
- /**
- * Finds all child and grand-child controls that are of the specified type.
- * @param string the class name
- * @param boolean whether the type comparison is strict or not. If false, controls of the parent classes of the specified class will also be returned.
- * @return array list of controls found
- */
- public function findControlsByType($type,$strict=true)
- {
- $controls=array();
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if(is_object($control) && (get_class($control)===$type || (!$strict && ($control instanceof $type))))
- $controls[]=$control;
- if(($control instanceof TControl) && $control->getHasControls())
- $controls=array_merge($controls,$control->findControlsByType($type,$strict));
- }
- }
- return $controls;
- }
-
- /**
- * Finds all child and grand-child controls with the specified ID.
- * Note, this method is different from {@link findControl} in that
- * it searches through all controls that have this control as the ancestor
- * while {@link findcontrol} only searches through controls that have this
- * control as the direct naming container.
- * @param string the ID being looked for
- * @return array list of controls found
- */
- public function findControlsByID($id)
- {
- $controls=array();
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if($control instanceof TControl)
- {
- if($control->_id===$id)
- $controls[]=$control;
- $controls=array_merge($controls,$control->findControlsByID($id));
- }
- }
- }
- return $controls;
- }
-
- /**
- * Resets the control as a naming container.
- * Only framework developers should use this method.
- */
- public function clearNamingContainer()
- {
- unset($this->_rf[self::RF_NAMED_CONTROLS_ID]);
- $this->clearNameTable();
- }
-
- /**
- * Registers an object by a name.
- * A registered object can be accessed like a public member variable.
- * This method should only be used by framework and control developers.
- * @param string name of the object
- * @param object object to be declared
- * @see __get
- */
- public function registerObject($name,$object)
- {
- if(isset($this->_rf[self::RF_NAMED_OBJECTS][$name]))
- throw new TInvalidOperationException('control_object_reregistered',$name);
- $this->_rf[self::RF_NAMED_OBJECTS][$name]=$object;
- }
-
- /**
- * Unregisters an object by name.
- * @param string name of the object
- * @see registerObject
- */
- public function unregisterObject($name)
- {
- unset($this->_rf[self::RF_NAMED_OBJECTS][$name]);
- }
-
- /**
- * @return boolean whether an object has been registered with the name
- * @see registerObject
- */
- public function isObjectRegistered($name)
- {
- return isset($this->_rf[self::RF_NAMED_OBJECTS][$name]);
- }
-
- /**
- * @return boolean true if the child control has been initialized.
- */
- public function getHasChildInitialized()
- {
- return $this->getControlStage() >= self::CS_CHILD_INITIALIZED;
- }
-
- /**
- * @return boolean true if the onInit event has raised.
- */
- public function getHasInitialized()
- {
- return $this->getControlStage() >= self::CS_INITIALIZED;
- }
-
- /**
- * @return boolean true if the control has loaded post data.
- */
- public function getHasLoadedPostData()
- {
- return $this->getControlStage() >= self::CS_STATE_LOADED;
- }
-
- /**
- * @return boolean true if the onLoad event has raised.
- */
- public function getHasLoaded()
- {
- return $this->getControlStage() >= self::CS_LOADED;
- }
-
- /**
- * @return boolean true if onPreRender event has raised.
- */
- public function getHasPreRendered()
- {
- return $this->getControlStage() >= self::CS_PRERENDERED;
- }
-
- /**
- * Returns the named registered object.
- * A component with explicit ID on a template will be registered to
- * the template owner. This method allows you to obtain this component
- * with the ID.
- * @return mixed the named registered object. Null if object is not found.
- */
- public function getRegisteredObject($name)
- {
- return isset($this->_rf[self::RF_NAMED_OBJECTS][$name])?$this->_rf[self::RF_NAMED_OBJECTS][$name]:null;
- }
-
- /**
- * @return boolean whether body contents are allowed for this control. Defaults to true.
- */
- public function getAllowChildControls()
- {
- return true;
- }
-
- /**
- * Adds the object instantiated on a template to the child control collection.
- * This method overrides the parent implementation.
- * Only framework developers and control developers should use this method.
- * @param string|TComponent text string or component parsed and instantiated in template
- * @see createdOnTemplate
- */
- public function addParsedObject($object)
- {
- $this->getControls()->add($object);
- }
-
- /**
- * Clears up the child state data.
- * After a control loads its state, those state that do not belong to
- * any existing child controls are stored as child state.
- * This method will remove these state.
- * Only frameworker developers and control developers should use this method.
- */
- final protected function clearChildState()
- {
- unset($this->_rf[self::RF_CHILD_STATE]);
- }
-
- /**
- * @param TControl the potential ancestor control
- * @return boolean if the control is a descendent (parent, parent of parent, etc.)
- * of the specified control
- */
- final protected function isDescendentOf($ancestor)
- {
- $control=$this;
- while($control!==$ancestor && $control->_parent)
- $control=$control->_parent;
- return $control===$ancestor;
- }
-
- /**
- * Adds a control into the child collection of the control.
- * Control lifecycles will be caught up during the addition.
- * Only framework developers should use this method.
- * @param TControl the new child control
- */
- public function addedControl($control)
- {
- if($control->_parent)
- $control->_parent->getControls()->remove($control);
- $control->_parent=$this;
- $control->_page=$this->getPage();
- $namingContainer=($this instanceof INamingContainer)?$this:$this->_namingContainer;
- if($namingContainer)
- {
- $control->_namingContainer=$namingContainer;
- if($control->_id==='')
- $control->generateAutomaticID();
- else
- $namingContainer->clearNameTable();
- $control->clearCachedUniqueID($control instanceof INamingContainer);
- }
-
- if($this->_stage>=self::CS_CHILD_INITIALIZED)
- {
- $control->initRecursive($namingContainer);
- if($this->_stage>=self::CS_STATE_LOADED)
- {
- if(isset($this->_rf[self::RF_CHILD_STATE][$control->_id]))
- {
- $state=$this->_rf[self::RF_CHILD_STATE][$control->_id];
- unset($this->_rf[self::RF_CHILD_STATE][$control->_id]);
- }
- else
- $state=null;
- $control->loadStateRecursive($state,!($this->_flags & self::IS_DISABLE_VIEWSTATE));
- if($this->_stage>=self::CS_LOADED)
- {
- $control->loadRecursive();
- if($this->_stage>=self::CS_PRERENDERED)
- $control->preRenderRecursive();
- }
- }
- }
- }
-
- /**
- * Removes a control from the child collection of the control.
- * Only framework developers should use this method.
- * @param TControl the child control removed
- */
- public function removedControl($control)
- {
- if($this->_namingContainer)
- $this->_namingContainer->clearNameTable();
- $control->unloadRecursive();
- $control->_parent=null;
- $control->_page=null;
- $control->_namingContainer=null;
- $control->_tplControl=null;
- //$control->_stage=self::CS_CONSTRUCTED;
- if(!($control->_flags & self::IS_ID_SET))
- $control->_id='';
- else
- unset($this->_rf[self::RF_NAMED_OBJECTS][$control->_id]);
- $control->clearCachedUniqueID(true);
- }
-
- /**
- * Performs the Init step for the control and all its child controls.
- * Only framework developers should use this method.
- * @param TControl the naming container control
- */
- protected function initRecursive($namingContainer=null)
- {
- $this->ensureChildControls();
- if($this->getHasControls())
- {
- if($this instanceof INamingContainer)
- $namingContainer=$this;
- $page=$this->getPage();
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if($control instanceof TControl)
- {
- $control->_namingContainer=$namingContainer;
- $control->_page=$page;
- if($control->_id==='' && $namingContainer)
- $control->generateAutomaticID();
- $control->initRecursive($namingContainer);
- }
- }
- }
- if($this->_stage<self::CS_INITIALIZED)
- {
- $this->_stage=self::CS_CHILD_INITIALIZED;
- if(($page=$this->getPage()) && $this->getEnableTheming() && !($this->_flags & self::IS_SKIN_APPLIED))
- {
- $page->applyControlSkin($this);
- $this->_flags |= self::IS_SKIN_APPLIED;
- }
- if(isset($this->_rf[self::RF_ADAPTER]))
- $this->_rf[self::RF_ADAPTER]->onInit(null);
- else
- $this->onInit(null);
- $this->_stage=self::CS_INITIALIZED;
- }
- }
-
- /**
- * Performs the Load step for the control and all its child controls.
- * Only framework developers should use this method.
- */
- protected function loadRecursive()
- {
- if($this->_stage<self::CS_LOADED)
- {
- if(isset($this->_rf[self::RF_ADAPTER]))
- $this->_rf[self::RF_ADAPTER]->onLoad(null);
- else
- $this->onLoad(null);
- }
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if($control instanceof TControl)
- $control->loadRecursive();
- }
- }
- if($this->_stage<self::CS_LOADED)
- $this->_stage=self::CS_LOADED;
- }
-
- /**
- * Performs the PreRender step for the control and all its child controls.
- * Only framework developers should use this method.
- */
- protected function preRenderRecursive()
- {
- $this->autoDataBindProperties();
-
- if($this->getVisible(false))
- {
- if(isset($this->_rf[self::RF_ADAPTER]))
- $this->_rf[self::RF_ADAPTER]->onPreRender(null);
- else
- $this->onPreRender(null);
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if($control instanceof TControl)
- $control->preRenderRecursive();
- else if($control instanceof TCompositeLiteral)
- $control->evaluateDynamicContent();
- }
- }
- $this->addToPostDataLoader();
- }
- $this->_stage=self::CS_PRERENDERED;
- }
-
- /**
- * Add controls implementing IPostBackDataHandler to post data loaders.
- */
- protected function addToPostDataLoader()
- {
- if($this instanceof IPostBackDataHandler)
- $this->getPage()->registerPostDataLoader($this);
- }
-
- /**
- * Performs the Unload step for the control and all its child controls.
- * Only framework developers should use this method.
- */
- protected function unloadRecursive()
- {
- if(!($this->_flags & self::IS_ID_SET))
- $this->_id='';
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- if($control instanceof TControl)
- $control->unloadRecursive();
- }
- if(isset($this->_rf[self::RF_ADAPTER]))
- $this->_rf[self::RF_ADAPTER]->onUnload(null);
- else
- $this->onUnload(null);
- }
-
- /**
- * This method is invoked when the control enters 'OnInit' stage.
- * The method raises 'OnInit' event.
- * If you override this method, be sure to call the parent implementation
- * so that the event handlers can be invoked.
- * @param TEventParameter event parameter to be passed to the event handlers
- */
- public function onInit($param)
- {
- $this->raiseEvent('OnInit',$this,$param);
- }
-
- /**
- * This method is invoked when the control enters 'OnLoad' stage.
- * The method raises 'OnLoad' event.
- * If you override this method, be sure to call the parent implementation
- * so that the event handlers can be invoked.
- * @param TEventParameter event parameter to be passed to the event handlers
- */
- public function onLoad($param)
- {
- $this->raiseEvent('OnLoad',$this,$param);
- }
-
- /**
- * Raises 'OnDataBinding' event.
- * This method is invoked when {@link dataBind} is invoked.
- * @param TEventParameter event parameter to be passed to the event handlers
- */
- public function onDataBinding($param)
- {
- Prado::trace("onDataBinding()",'System.Web.UI.TControl');
- $this->raiseEvent('OnDataBinding',$this,$param);
- }
-
-
- /**
- * This method is invoked when the control enters 'OnUnload' stage.
- * The method raises 'OnUnload' event.
- * If you override this method, be sure to call the parent implementation
- * so that the event handlers can be invoked.
- * @param TEventParameter event parameter to be passed to the event handlers
- */
- public function onUnload($param)
- {
- $this->raiseEvent('OnUnload',$this,$param);
- }
-
- /**
- * This method is invoked when the control enters 'OnPreRender' stage.
- * The method raises 'OnPreRender' event.
- * If you override this method, be sure to call the parent implementation
- * so that the event handlers can be invoked.
- * @param TEventParameter event parameter to be passed to the event handlers
- */
- public function onPreRender($param)
- {
- $this->raiseEvent('OnPreRender',$this,$param);
- }
-
- /**
- * Invokes the parent's bubbleEvent method.
- * A control who wants to bubble an event must call this method in its onEvent method.
- * @param TControl sender of the event
- * @param TEventParameter event parameter
- * @see bubbleEvent
- */
- protected function raiseBubbleEvent($sender,$param)
- {
- $control=$this;
- while($control=$control->_parent)
- {
- if($control->bubbleEvent($sender,$param))
- break;
- }
- }
-
- /**
- * This method responds to a bubbled event.
- * This method should be overriden to provide customized response to a bubbled event.
- * Check the type of event parameter to determine what event is bubbled currently.
- * @param TControl sender of the event
- * @param TEventParameter event parameters
- * @return boolean true if the event bubbling is handled and no more bubbling.
- * @see raiseBubbleEvent
- */
- public function bubbleEvent($sender,$param)
- {
- return false;
- }
-
- /**
- * Broadcasts an event.
- * The event will be sent to all controls on the current page hierarchy.
- * If a control defines the event, the event will be raised for the control.
- * If a control implements {@link IBroadcastEventReceiver}, its
- * {@link IBroadcastEventReceiver::broadcastEventReceived broadcastEventReceived()} method will
- * be invoked which gives the control a chance to respond to the event.
- * For example, when broadcasting event 'OnClick', all controls having 'OnClick'
- * event will have this event raised, and all controls implementing
- * {@link IBroadcastEventReceiver} will also have its
- * {@link IBroadcastEventReceiver::broadcastEventReceived broadcastEventReceived()}
- * invoked.
- * @param string name of the broadcast event
- * @param TControl sender of this event
- * @param TEventParameter event parameter
- */
- public function broadcastEvent($name,$sender,$param)
- {
- $rootControl=(($page=$this->getPage())===null)?$this:$page;
- $rootControl->broadcastEventInternal($name,$sender,new TBroadcastEventParameter($name,$param));
- }
-
- /**
- * Recursively broadcasts an event.
- * This method should only be used by framework developers.
- * @param string name of the broadcast event
- * @param TControl sender of the event
- * @param TBroadcastEventParameter event parameter
- */
- private function broadcastEventInternal($name,$sender,$param)
- {
- if($this->hasEvent($name))
- $this->raiseEvent($name,$sender,$param->getParameter());
- if($this instanceof IBroadcastEventReceiver)
- $this->broadcastEventReceived($sender,$param);
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if($control instanceof TControl)
- $control->broadcastEventInternal($name,$sender,$param);
- }
- }
- }
-
- /**
- * Traverse the whole control hierarchy rooted at this control.
- * Callback function may be invoked for each control being visited.
- * A pre-callback is invoked before traversing child controls;
- * A post-callback is invoked after traversing child controls.
- * Callback functions can be global functions or class methods.
- * They must be of the following signature:
- * <code>
- * function callback_func($control,$param) {...}
- * </code>
- * where $control refers to the control being visited and $param
- * is the parameter that is passed originally when calling this traverse function.
- *
- * @param mixed parameter to be passed to callbacks for each control
- * @param callback callback invoked before traversing child controls. If null, it is ignored.
- * @param callback callback invoked after traversing child controls. If null, it is ignored.
- */
- protected function traverseChildControls($param,$preCallback=null,$postCallback=null)
- {
- if($preCallback!==null)
- call_user_func($preCallback,$this,$param);
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if($control instanceof TControl)
- {
- $control->traverseChildControls($param,$preCallback,$postCallback);
- }
- }
- }
- if($postCallback!==null)
- call_user_func($postCallback,$this,$param);
- }
-
- /**
- * Renders the control.
- * Only when the control is visible will the control be rendered.
- * @param THtmlWriter the writer used for the rendering purpose
- */
- public function renderControl($writer)
- {
- if($this instanceof IActiveControl || $this->getVisible(false))
- {
- if(isset($this->_rf[self::RF_ADAPTER]))
- $this->_rf[self::RF_ADAPTER]->render($writer);
- else
- $this->render($writer);
- }
- }
-
- /**
- * Renders the control.
- * This method is invoked by {@link renderControl} when the control is visible.
- * You can override this method to provide customized rendering of the control.
- * By default, the control simply renders all its child contents.
- * @param THtmlWriter the writer used for the rendering purpose
- */
- public function render($writer)
- {
- $this->renderChildren($writer);
- }
-
- /**
- * Renders the children of the control.
- * This method iterates through all child controls and static text strings
- * and renders them in order.
- * @param THtmlWriter the writer used for the rendering purpose
- */
- public function renderChildren($writer)
- {
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if(is_string($control))
- $writer->write($control);
- else if($control instanceof TControl)
- $control->renderControl($writer);
- else if($control instanceof IRenderable)
- $control->render($writer);
- }
- }
- }
-
- /**
- * This method is invoked when control state is to be saved.
- * You can override this method to do last step state saving.
- * Parent implementation must be invoked.
- */
- public function saveState()
- {
- }
-
- /**
- * This method is invoked right after the control has loaded its state.
- * You can override this method to initialize data from the control state.
- * Parent implementation must be invoked.
- */
- public function loadState()
- {
- }
-
- /**
- * Loads state (viewstate and controlstate) into a control and its children.
- * This method should only be used by framework developers.
- * @param array the collection of the state
- * @param boolean whether the viewstate should be loaded
- */
- protected function loadStateRecursive(&$state,$needViewState=true)
- {
- if(is_array($state))
- {
- // A null state means the stateful properties all take default values.
- // So if the state is enabled, we have to assign the null value.
- $needViewState=($needViewState && !($this->_flags & self::IS_DISABLE_VIEWSTATE));
- if(isset($state[1]))
- {
- $this->_rf[self::RF_CONTROLSTATE]=&$state[1];
- unset($state[1]);
- }
- else
- unset($this->_rf[self::RF_CONTROLSTATE]);
- if($needViewState)
- {
- if(isset($state[0]))
- $this->_viewState=&$state[0];
- else
- $this->_viewState=array();
- }
- unset($state[0]);
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if($control instanceof TControl)
- {
- if(isset($state[$control->_id]))
- {
- $control->loadStateRecursive($state[$control->_id],$needViewState);
- unset($state[$control->_id]);
- }
- }
- }
- }
- if(!empty($state))
- $this->_rf[self::RF_CHILD_STATE]=&$state;
- }
- $this->_stage=self::CS_STATE_LOADED;
- if(isset($this->_rf[self::RF_ADAPTER]))
- $this->_rf[self::RF_ADAPTER]->loadState();
- else
- $this->loadState();
- }
-
- /**
- * Saves all control state (viewstate and controlstate) as a collection.
- * This method should only be used by framework developers.
- * @param boolean whether the viewstate should be saved
- * @return array the collection of the control state (including its children's state).
- */
- protected function &saveStateRecursive($needViewState=true)
- {
- if(isset($this->_rf[self::RF_ADAPTER]))
- $this->_rf[self::RF_ADAPTER]->saveState();
- else
- $this->saveState();
- $needViewState=($needViewState && !($this->_flags & self::IS_DISABLE_VIEWSTATE));
- $state=array();
- if($this->getHasControls())
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- {
- if($control instanceof TControl)
- $state[$control->_id]=&$control->saveStateRecursive($needViewState);
- }
- }
- if($needViewState && !empty($this->_viewState))
- $state[0]=&$this->_viewState;
- if(isset($this->_rf[self::RF_CONTROLSTATE]))
- $state[1]=&$this->_rf[self::RF_CONTROLSTATE];
- return $state;
- }
-
- /**
- * Applies a stylesheet skin to a control.
- * @param TPage the page containing the control
- * @throws TInvalidOperationException if the stylesheet skin is applied already
- */
- public function applyStyleSheetSkin($page)
- {
- if($page && !($this->_flags & self::IS_STYLESHEET_APPLIED))
- {
- $page->applyControlStyleSheet($this);
- $this->_flags |= self::IS_STYLESHEET_APPLIED;
- }
- else if($this->_flags & self::IS_STYLESHEET_APPLIED)
- throw new TInvalidOperationException('control_stylesheet_applied',get_class($this));
- }
-
- /**
- * Clears the cached UniqueID.
- * If $recursive=true, all children's cached UniqueID will be cleared as well.
- * @param boolean whether the clearing is recursive.
- */
- private function clearCachedUniqueID($recursive)
- {
- if($recursive && $this->_uid!==null && isset($this->_rf[self::RF_CONTROLS]))
- {
- foreach($this->_rf[self::RF_CONTROLS] as $control)
- if($control instanceof TControl)
- $control->clearCachedUniqueID($recursive);
- }
- $this->_uid=null;
- }
-
- /**
- * Generates an automatic ID for the control.
- */
- private function generateAutomaticID()
- {
- $this->_flags &= ~self::IS_ID_SET;
- if(!isset($this->_namingContainer->_rf[self::RF_NAMED_CONTROLS_ID]))
- $this->_namingContainer->_rf[self::RF_NAMED_CONTROLS_ID]=0;
- $id=$this->_namingContainer->_rf[self::RF_NAMED_CONTROLS_ID]++;
- $this->_id=self::AUTOMATIC_ID_PREFIX . $id;
- $this->_namingContainer->clearNameTable();
- }
-
- /**
- * Clears the list of the controls whose IDs are managed by the specified naming container.
- */
- private function clearNameTable()
- {
- unset($this->_rf[self::RF_NAMED_CONTROLS]);
- }
-
- /**
- * Updates the list of the controls whose IDs are managed by the specified naming container.
- * @param TControl the naming container
- * @param TControlCollection list of controls
- * @throws TInvalidDataValueException if a control's ID is not unique within its naming container.
- */
- private function fillNameTable($container,$controls)
- {
- foreach($controls as $control)
- {
- if($control instanceof TControl)
- {
- if($control->_id!=='')
- {
- if(isset($container->_rf[self::RF_NAMED_CONTROLS][$control->_id]))
- throw new TInvalidDataValueException('control_id_nonunique',get_class($control),$control->_id);
- else
- $container->_rf[self::RF_NAMED_CONTROLS][$control->_id]=$control;
- }
- if(!($control instanceof INamingContainer) && $control->getHasControls())
- $this->fillNameTable($container,$control->_rf[self::RF_CONTROLS]);
- }
- }
- }
-}
-
-
-/**
- * TControlCollection class
- *
- * TControlCollection implements a collection that enables
- * controls to maintain a list of their child controls.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-class TControlCollection extends TList
-{
- /**
- * the control that owns this collection.
- * @var TControl
- */
- private $_o;
-
- /**
- * Constructor.
- * @param TControl the control that owns this collection.
- * @param boolean whether the list is read-only
- */
- public function __construct(TControl $owner,$readOnly=false)
- {
- $this->_o=$owner;
- parent::__construct(null,$readOnly);
- }
-
- /**
- * @return TControl the control that owns this collection.
- */
- protected function getOwner()
- {
- return $this->_o;
- }
-
- /**
- * Inserts an item at the specified position.
- * This overrides the parent implementation by performing additional
- * operations for each newly added child control.
- * @param integer the speicified position.
- * @param mixed new item
- * @throws TInvalidDataTypeException if the item to be inserted is neither a string nor a TControl.
- */
- public function insertAt($index,$item)
- {
- if($item instanceof TControl)
- {
- parent::insertAt($index,$item);
- $this->_o->addedControl($item);
- }
- else if(is_string($item) || ($item instanceof IRenderable))
- parent::insertAt($index,$item);
- else
- throw new TInvalidDataTypeException('controlcollection_control_required');
- }
-
- /**
- * Removes an item at the specified position.
- * This overrides the parent implementation by performing additional
- * cleanup work when removing a child control.
- * @param integer the index of the item to be removed.
- * @return mixed the removed item.
- */
- public function removeAt($index)
- {
- $item=parent::removeAt($index);
- if($item instanceof TControl)
- $this->_o->removedControl($item);
- return $item;
- }
-
- /**
- * Overrides the parent implementation by invoking {@link TControl::clearNamingContainer}
- */
- public function clear()
- {
- parent::clear();
- if($this->_o instanceof INamingContainer)
- $this->_o->clearNamingContainer();
- }
-}
-
-/**
- * TEmptyControlCollection class
- *
- * TEmptyControlCollection implements an empty control list that prohibits adding
- * controls to it. This is useful for controls that do not allow child controls.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-class TEmptyControlCollection extends TControlCollection
-{
- /**
- * Constructor.
- * @param TControl the control that owns this collection.
- */
- public function __construct(TControl $owner)
- {
- parent::__construct($owner,true);
- }
-
- /**
- * Inserts an item at the specified position.
- * This overrides the parent implementation by ignoring new addition.
- * @param integer the speicified position.
- * @param mixed new item
- */
- public function insertAt($index,$item)
- {
- if(!is_string($item)) // string is possible if property tag is used. we simply ignore it in this case
- parent::insertAt($index,$item); // this will generate an exception in parent implementation
- }
-}
-
-/**
- * INamingContainer interface.
- * INamingContainer marks a control as a naming container.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface INamingContainer
-{
-}
-
-/**
- * IPostBackEventHandler interface
- *
- * If a control wants to respond to postback event, it must implement this interface.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface IPostBackEventHandler
-{
- /**
- * Raises postback event.
- * The implementation of this function should raise appropriate event(s) (e.g. OnClick, OnCommand)
- * indicating the component is responsible for the postback event.
- * @param string the parameter associated with the postback event
- */
- public function raisePostBackEvent($param);
-}
-
-/**
- * IPostBackDataHandler interface
- *
- * If a control wants to load post data, it must implement this interface.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface IPostBackDataHandler
-{
- /**
- * Loads user input data.
- * The implementation of this function can use $values[$key] to get the user input
- * data that are meant for the particular control.
- * @param string the key that can be used to retrieve data from the input data collection
- * @param array the input data collection
- * @return boolean whether the data of the control has been changed
- */
- public function loadPostData($key,$values);
- /**
- * Raises postdata changed event.
- * The implementation of this function should raise appropriate event(s) (e.g. OnTextChanged)
- * indicating the control data is changed.
- */
- public function raisePostDataChangedEvent();
- /**
- * @return boolean whether postback causes the data change. Defaults to false for non-postback state.
- */
- public function getDataChanged();
-}
-
-
-/**
- * IValidator interface
- *
- * If a control wants to validate user input, it must implement this interface.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface IValidator
-{
- /**
- * Validates certain data.
- * The implementation of this function should validate certain data
- * (e.g. data entered into TTextBox control).
- * @return boolean whether the data passes the validation
- */
- public function validate();
- /**
- * @return boolean whether the previous {@link validate()} is successful.
- */
- public function getIsValid();
- /**
- * @param boolean whether the validator validates successfully
- */
- public function setIsValid($value);
- /**
- * @return string error message during last validate
- */
- public function getErrorMessage();
- /**
- * @param string error message for the validation
- */
- public function setErrorMessage($value);
-}
-
-
-/**
- * IValidatable interface
- *
- * If a control wants to be validated by a validator, it must implement this interface.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface IValidatable
-{
- /**
- * @return mixed the value of the property to be validated.
- */
- public function getValidationPropertyValue();
- /**
- * @return boolean wether this control's validators validated successfully (must default to true)
- */
- public function getIsValid();
- /**
- * @return boolean wether this control's validators validated successfully
- */
- public function setIsValid($value);
-}
-
-/**
- * IBroadcastEventReceiver interface
- *
- * If a control wants to check broadcast event, it must implement this interface.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface IBroadcastEventReceiver
-{
- /**
- * Handles broadcast event.
- * This method is invoked automatically when an event is broadcasted.
- * Within this method, you may check the event name given in
- * the event parameter to determine whether you should respond to
- * this event.
- * @param TControl sender of the event
- * @param TBroadCastEventParameter event parameter
- */
- public function broadcastEventReceived($sender,$param);
-}
-
-/**
- * ITheme interface.
- *
- * This interface must be implemented by theme.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface ITheme
-{
- /**
- * Applies this theme to the specified control.
- * @param TControl the control to be applied with this theme
- */
- public function applySkin($control);
-}
-
-/**
- * ITemplate interface
- *
- * ITemplate specifies the interface for classes encapsulating
- * parsed template structures.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface ITemplate
-{
- /**
- * Instantiates the template.
- * Content in the template will be instantiated as components and text strings
- * and passed to the specified parent control.
- * @param TControl the parent control
- */
- public function instantiateIn($parent);
-}
-
-/**
- * IButtonControl interface
- *
- * IButtonControl specifies the common properties and events that must
- * be implemented by a button control, such as {@link TButton}, {@link TLinkButton},
- * {@link TImageButton}.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-interface IButtonControl
-{
- /**
- * @return string caption of the button
- */
- public function getText();
-
- /**
- * @param string caption of the button
- */
- public function setText($value);
-
- /**
- * @return boolean whether postback event trigger by this button will cause input validation
- */
- public function getCausesValidation();
-
- /**
- * @param boolean whether postback event trigger by this button will cause input validation
- */
- public function setCausesValidation($value);
-
- /**
- * @return string the command name associated with the {@link onCommand OnCommand} event.
- */
- public function getCommandName();
-
- /**
- * @param string the command name associated with the {@link onCommand OnCommand} event.
- */
- public function setCommandName($value);
-
- /**
- * @return string the parameter associated with the {@link onCommand OnCommand} event
- */
- public function getCommandParameter();
-
- /**
- * @param string the parameter associated with the {@link onCommand OnCommand} event.
- */
- public function setCommandParameter($value);
-
- /**
- * @return string the group of validators which the button causes validation upon postback
- */
- public function getValidationGroup();
-
- /**
- * @param string the group of validators which the button causes validation upon postback
- */
- public function setValidationGroup($value);
-
- /**
- * Raises <b>OnClick</b> event.
- * @param TEventParameter event parameter to be passed to the event handlers
- */
- public function onClick($param);
-
- /**
- * Raises <b>OnCommand</b> event.
- * @param TCommandEventParameter event parameter to be passed to the event handlers
- */
- public function onCommand($param);
-
- /**
- * @param boolean set by a panel to register this button as the default button for the panel.
- */
- public function setIsDefaultButton($value);
-
- /**
- * @return boolean true if this button is registered as a default button for a panel.
- */
- public function getIsDefaultButton();
-}
-
-/**
- * ISurroundable interface
- *
- * Identifies controls that may create an additional surrounding tag. The id of the
- * tag can be obtained with {@link getSurroundingTagID}.
- *
- * @package System.Web.UI
- * @since 3.1.2
- */
-interface ISurroundable
-{
- /**
- * @return string the id of the embedding tag of the control or the control's clientID if not surrounded
- */
- public function getSurroundingTagID();
-}
-
-/**
- * TBroadcastEventParameter class
- *
- * TBroadcastEventParameter encapsulates the parameter data for
- * events that are broadcasted. The name of of the event is specified via
- * {@link setName Name} property while the event parameter is via
- * {@link setParameter Parameter} property.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-class TBroadcastEventParameter extends TEventParameter
-{
- private $_name;
- private $_param;
-
- /**
- * Constructor.
- * @param string name of the broadcast event
- * @param mixed parameter of the broadcast event
- */
- public function __construct($name='',$parameter=null)
- {
- $this->_name=$name;
- $this->_param=$parameter;
- }
-
- /**
- * @return string name of the broadcast event
- */
- public function getName()
- {
- return $this->_name;
- }
-
- /**
- * @param string name of the broadcast event
- */
- public function setName($value)
- {
- $this->_name=$value;
- }
-
- /**
- * @return mixed parameter of the broadcast event
- */
- public function getParameter()
- {
- return $this->_param;
- }
-
- /**
- * @param mixed parameter of the broadcast event
- */
- public function setParameter($value)
- {
- $this->_param=$value;
- }
-}
-
-/**
- * TCommandEventParameter class
- *
- * TCommandEventParameter encapsulates the parameter data for <b>Command</b>
- * event of button controls. You can access the name of the command via
- * {@link getCommandName CommandName} property, and the parameter carried
- * with the command via {@link getCommandParameter CommandParameter} property.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-class TCommandEventParameter extends TEventParameter
-{
- private $_name;
- private $_param;
-
- /**
- * Constructor.
- * @param string name of the command
- * @param string parameter of the command
- */
- public function __construct($name='',$parameter='')
- {
- $this->_name=$name;
- $this->_param=$parameter;
- }
-
- /**
- * @return string name of the command
- */
- public function getCommandName()
- {
- return $this->_name;
- }
-
- /**
- * @return string parameter of the command
- */
- public function getCommandParameter()
- {
- return $this->_param;
- }
-}
-
-
-/**
- * TCompositeLiteral class
- *
- * TCompositeLiteral is used internally by {@link TTemplate} for representing
- * consecutive static strings, expressions and statements.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI
- * @since 3.0
- */
-class TCompositeLiteral extends TComponent implements IRenderable, IBindable
-{
- const TYPE_EXPRESSION=0;
- const TYPE_STATEMENTS=1;
- const TYPE_DATABINDING=2;
- private $_container=null;
- private $_items=array();
- private $_expressions=array();
- private $_statements=array();
- private $_bindings=array();
-
- /**
- * Constructor.
- * @param array list of items to be represented by TCompositeLiteral
- */
- public function __construct($items)
- {
- $this->_items=array();
- $this->_expressions=array();
- $this->_statements=array();
- foreach($items as $id=>$item)
- {
- if(is_array($item))
- {
- if($item[0]===self::TYPE_EXPRESSION)
- $this->_expressions[$id]=$item[1];
- else if($item[0]===self::TYPE_STATEMENTS)
- $this->_statements[$id]=$item[1];
- else if($item[0]===self::TYPE_DATABINDING)
- $this->_bindings[$id]=$item[1];
- $this->_items[$id]='';
- }
- else
- $this->_items[$id]=$item;
- }
- }
-
- /**
- * @return TComponent container of this component. It serves as the evaluation context of expressions and statements.
- */
- public function getContainer()
- {
- return $this->_container;
- }
-
- /**
- * @param TComponent container of this component. It serves as the evaluation context of expressions and statements.
- */
- public function setContainer(TComponent $value)
- {
- $this->_container=$value;
- }
-
- /**
- * Evaluates the expressions and/or statements in the component.
- */
- public function evaluateDynamicContent()
- {
- $context=$this->_container===null?$this:$this->_container;
- foreach($this->_expressions as $id=>$expression)
- $this->_items[$id]=$context->evaluateExpression($expression);
- foreach($this->_statements as $id=>$statement)
- $this->_items[$id]=$context->evaluateStatements($statement);
- }
-
- /**
- * Performs databindings.
- * This method is required by {@link IBindable}
- */
- public function dataBind()
- {
- $context=$this->_container===null?$this:$this->_container;
- foreach($this->_bindings as $id=>$binding)
- $this->_items[$id]=$context->evaluateExpression($binding);
- }
-
- /**
- * Renders the content stored in this component.
- * This method is required by {@link IRenderable}
- * @param ITextWriter
- */
- public function render($writer)
- {
- $writer->write(implode('',$this->_items));
- }
-}
-
-?>
+<?php
+/**
+ * TControl, TControlCollection, TEventParameter and INamingContainer class file
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005-2012 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Id$
+ * @package System.Web.UI
+ */
+
+/**
+ * Includes TAttributeCollection and TControlAdapter class
+ */
+Prado::using('System.Collections.TAttributeCollection');
+Prado::using('System.Web.UI.TControlAdapter');
+
+/**
+ * TControl class
+ *
+ * TControl is the base class for all components on a page hierarchy.
+ * It implements the following features for UI-related functionalities:
+ * - databinding feature
+ * - parent and child relationship
+ * - naming container and containee relationship
+ * - viewstate and controlstate features
+ * - rendering scheme
+ * - control lifecycles
+ *
+ * A property can be data-bound with an expression. By calling {@link dataBind},
+ * expressions bound to properties will be evaluated and the results will be
+ * set to the corresponding properties.
+ *
+ * Parent and child relationship determines how the presentation of controls are
+ * enclosed within each other. A parent will determine where to place
+ * the presentation of its child controls. For example, a TPanel will enclose
+ * all its child controls' presentation within a div html tag. A control's parent
+ * can be obtained via {@link getParent Parent} property, and its
+ * {@link getControls Controls} property returns a list of the control's children,
+ * including controls and static texts. The property can be manipulated
+ * like an array for adding or removing a child (see {@link TList} for more details).
+ *
+ * A naming container control implements INamingContainer and ensures that
+ * its containee controls can be differentiated by their ID property values.
+ * Naming container and containee realtionship specifies a protocol to uniquely
+ * identify an arbitrary control on a page hierarchy by an ID path (concatenation
+ * of all naming containers' IDs and the target control's ID).
+ *
+ * Viewstate and controlstate are two approaches to preserve state across
+ * page postback requests. ViewState is mainly related with UI specific state
+ * and can be disabled if not needed. ControlState represents crucial logic state
+ * and cannot be disabled.
+ *
+ * A control is rendered via its {@link render()} method (the method is invoked
+ * by the framework.) Descendant control classes may override this method for
+ * customized rendering. By default, {@link render()} invokes {@link renderChildren()}
+ * which is responsible for rendering of children of the control.
+ * Control's {@link getVisible Visible} property governs whether the control
+ * should be rendered or not.
+ *
+ * Each control on a page will undergo a series of lifecycles, including
+ * control construction, Init, Load, PreRender, Render, and OnUnload.
+ * They work together with page lifecycles to process a page request.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TControl extends TApplicationComponent implements IRenderable, IBindable
+{
+ /**
+ * format of control ID
+ */
+ const ID_FORMAT='/^[a-zA-Z_]\\w*$/';
+ /**
+ * separator char between IDs in a UniqueID
+ */
+ const ID_SEPARATOR='$';
+ /**
+ * separator char between IDs in a ClientID
+ */
+ const CLIENT_ID_SEPARATOR='_';
+ /**
+ * prefix to an ID automatically generated
+ */
+ const AUTOMATIC_ID_PREFIX='ctl';
+
+ /**
+ * the stage of lifecycles that the control is currently at
+ */
+ const CS_CONSTRUCTED=0;
+ const CS_CHILD_INITIALIZED=1;
+ const CS_INITIALIZED=2;
+ const CS_STATE_LOADED=3;
+ const CS_LOADED=4;
+ const CS_PRERENDERED=5;
+
+ /**
+ * State bits.
+ */
+ const IS_ID_SET=0x01;
+ const IS_DISABLE_VIEWSTATE=0x02;
+ const IS_SKIN_APPLIED=0x04;
+ const IS_STYLESHEET_APPLIED=0x08;
+ const IS_DISABLE_THEMING=0x10;
+ const IS_CHILD_CREATED=0x20;
+ const IS_CREATING_CHILD=0x40;
+
+ /**
+ * Indexes for the rare fields.
+ * In order to save memory, rare fields will only be created if they are needed.
+ */
+ const RF_CONTROLS=0; // child controls
+ const RF_CHILD_STATE=1; // child state field
+ const RF_NAMED_CONTROLS=2; // list of controls whose namingcontainer is this control
+ const RF_NAMED_CONTROLS_ID=3; // counter for automatic id
+ const RF_SKIN_ID=4; // skin ID
+ const RF_DATA_BINDINGS=5; // data bindings
+ const RF_EVENTS=6; // event handlers
+ const RF_CONTROLSTATE=7; // controlstate
+ const RF_NAMED_OBJECTS=8; // controls declared with ID on template
+ const RF_ADAPTER=9; // adapter
+ const RF_AUTO_BINDINGS=10; // auto data bindings
+
+ /**
+ * @var string control ID
+ */
+ private $_id='';
+ /**
+ * @var string control unique ID
+ */
+ private $_uid;
+ /**
+ * @var TControl parent of the control
+ */
+ private $_parent;
+ /**
+ * @var TPage page that the control resides in
+ */
+ private $_page;
+ /**
+ * @var TControl naming container of the control
+ */
+ private $_namingContainer;
+ /**
+ * @var TTemplateControl control whose template contains the control
+ */
+ private $_tplControl;
+ /**
+ * @var array viewstate data
+ */
+ private $_viewState=array();
+ /**
+ * @var array temporary state (usually set in template)
+ */
+ private $_tempState=array();
+ /**
+ * @var boolean whether we should keep state in viewstate
+ */
+ private $_trackViewState=true;
+ /**
+ * @var integer the current stage of the control lifecycles
+ */
+ private $_stage=0;
+ /**
+ * @var integer representation of the state bits
+ */
+ private $_flags=0;
+ /**
+ * @var array a collection of rare control data
+ */
+ private $_rf=array();
+
+ /**
+ * Constructor.
+ */
+ public function __construct()
+ {
+ }
+
+ /**
+ * Returns a property value by name or a control by ID.
+ * This overrides the parent implementation by allowing accessing
+ * a control via its ID using the following syntax,
+ * <code>
+ * $menuBar=$this->menuBar;
+ * </code>
+ * Note, the control must be configured in the template
+ * with explicit ID. If the name matches both a property and a control ID,
+ * the control ID will take the precedence.
+ *
+ * @param string the property name or control ID
+ * @return mixed the property value or the target control
+ * @throws TInvalidOperationException if the property is not defined.
+ * @see registerObject
+ */
+ public function __get($name)
+ {
+ if(isset($this->_rf[self::RF_NAMED_OBJECTS][$name]))
+ return $this->_rf[self::RF_NAMED_OBJECTS][$name];
+ else
+ return parent::__get($name);
+ }
+
+ /**
+ * @return boolean whether there is an adapter for this control
+ */
+ public function getHasAdapter()
+ {
+ return isset($this->_rf[self::RF_ADAPTER]);
+ }
+
+ /**
+ * @return TControlAdapter control adapter. Null if not exists.
+ */
+ public function getAdapter()
+ {
+ return isset($this->_rf[self::RF_ADAPTER])?$this->_rf[self::RF_ADAPTER]:null;
+ }
+
+ /**
+ * @param TControlAdapter control adapter
+ */
+ public function setAdapter(TControlAdapter $adapter)
+ {
+ $this->_rf[self::RF_ADAPTER]=$adapter;
+ }
+
+ /**
+ * @return TControl the parent of this control
+ */
+ public function getParent()
+ {
+ return $this->_parent;
+ }
+
+ /**
+ * @return TControl the naming container of this control
+ */
+ public function getNamingContainer()
+ {
+ if(!$this->_namingContainer && $this->_parent)
+ {
+ if($this->_parent instanceof INamingContainer)
+ $this->_namingContainer=$this->_parent;
+ else
+ $this->_namingContainer=$this->_parent->getNamingContainer();
+ }
+ return $this->_namingContainer;
+ }
+
+ /**
+ * @return TPage the page that contains this control
+ */
+ public function getPage()
+ {
+ if(!$this->_page)
+ {
+ if($this->_parent)
+ $this->_page=$this->_parent->getPage();
+ else if($this->_tplControl)
+ $this->_page=$this->_tplControl->getPage();
+ }
+ return $this->_page;
+ }
+
+ /**
+ * Sets the page for a control.
+ * Only framework developers should use this method.
+ * @param TPage the page that contains this control
+ */
+ public function setPage($page)
+ {
+ $this->_page=$page;
+ }
+
+ /**
+ * Sets the control whose template contains this control.
+ * Only framework developers should use this method.
+ * @param TTemplateControl the control whose template contains this control
+ */
+ public function setTemplateControl($control)
+ {
+ $this->_tplControl=$control;
+ }
+
+ /**
+ * @return TTemplateControl the control whose template contains this control
+ */
+ public function getTemplateControl()
+ {
+ if(!$this->_tplControl && $this->_parent)
+ $this->_tplControl=$this->_parent->getTemplateControl();
+ return $this->_tplControl;
+ }
+
+ /**
+ * @return TTemplateControl the control whose template is loaded from
+ * some external storage, such as file, db, and whose template ultimately
+ * contains this control.
+ */
+ public function getSourceTemplateControl()
+ {
+ $control=$this;
+ while(($control instanceof TControl) && ($control=$control->getTemplateControl())!==null)
+ {
+ if(($control instanceof TTemplateControl) && $control->getIsSourceTemplateControl())
+ return $control;
+ }
+ return $this->getPage();
+ }
+
+ /**
+ * Gets the lifecycle step the control is currently at.
+ * This method should only be used by control developers.
+ * @return integer the lifecycle step the control is currently at.
+ * The value can be CS_CONSTRUCTED, CS_CHILD_INITIALIZED, CS_INITIALIZED,
+ * CS_STATE_LOADED, CS_LOADED, CS_PRERENDERED.
+ */
+ protected function getControlStage()
+ {
+ return $this->_stage;
+ }
+
+ /**
+ * Sets the lifecycle step the control is currently at.
+ * This method should only be used by control developers.
+ * @param integer the lifecycle step the control is currently at.
+ * Valid values include CS_CONSTRUCTED, CS_CHILD_INITIALIZED, CS_INITIALIZED,
+ * CS_STATE_LOADED, CS_LOADED, CS_PRERENDERED.
+ */
+ protected function setControlStage($value)
+ {
+ $this->_stage=$value;
+ }
+
+ /**
+ * Returns the id of the control.
+ * Control ID can be either manually set or automatically generated.
+ * If $hideAutoID is true, automatically generated ID will be returned as an empty string.
+ * @param boolean whether to hide automatically generated ID
+ * @return string the ID of the control
+ */
+ public function getID($hideAutoID=true)
+ {
+ if($hideAutoID)
+ return ($this->_flags & self::IS_ID_SET) ? $this->_id : '';
+ else
+ return $this->_id;
+ }
+
+ /**
+ * @param string the new control ID. The value must consist of word characters [a-zA-Z0-9_] only
+ * @throws TInvalidDataValueException if ID is in a bad format
+ */
+ public function setID($id)
+ {
+ if(!preg_match(self::ID_FORMAT,$id))
+ throw new TInvalidDataValueException('control_id_invalid',get_class($this),$id);
+ $this->_id=$id;
+ $this->_flags |= self::IS_ID_SET;
+ $this->clearCachedUniqueID($this instanceof INamingContainer);
+ if($this->_namingContainer)
+ $this->_namingContainer->clearNameTable();
+ }
+
+ /**
+ * Returns a unique ID that identifies the control in the page hierarchy.
+ * A unique ID is the contenation of all naming container controls' IDs and the control ID.
+ * These IDs are separated by '$' character.
+ * Control users should not rely on the specific format of UniqueID, however.
+ * @return string a unique ID that identifies the control in the page hierarchy
+ */
+ public function getUniqueID()
+ {
+ if($this->_uid==='' || $this->_uid===null) // need to build the UniqueID
+ {
+ $this->_uid=''; // set to not-null, so that clearCachedUniqueID() may take action
+ if($namingContainer=$this->getNamingContainer())
+ {
+ if($this->getPage()===$namingContainer)
+ return ($this->_uid=$this->_id);
+ else if(($prefix=$namingContainer->getUniqueID())==='')
+ return $this->_id;
+ else
+ return ($this->_uid=$prefix.self::ID_SEPARATOR.$this->_id);
+ }
+ else // no naming container
+ return $this->_id;
+ }
+ else
+ return $this->_uid;
+ }
+
+ /**
+ * Sets input focus to this control.
+ */
+ public function focus()
+ {
+ $this->getPage()->setFocus($this);
+ }
+
+ /**
+ * Returns the client ID of the control.
+ * The client ID can be used to uniquely identify
+ * the control in client-side scripts (such as JavaScript).
+ * Do not rely on the explicit format of the return ID.
+ * @return string the client ID of the control
+ */
+ public function getClientID()
+ {
+ return strtr($this->getUniqueID(),self::ID_SEPARATOR,self::CLIENT_ID_SEPARATOR);
+ }
+
+ /**
+ * Converts a unique ID to a client ID.
+ * @param string the unique ID of a control
+ * @return string the client ID of the control
+ */
+ public static function convertUniqueIdToClientId($uniqueID)
+ {
+ return strtr($uniqueID,self::ID_SEPARATOR,self::CLIENT_ID_SEPARATOR);
+ }
+
+ /**
+ * @return string the skin ID of this control, '' if not set
+ */
+ public function getSkinID()
+ {
+ return isset($this->_rf[self::RF_SKIN_ID])?$this->_rf[self::RF_SKIN_ID]:'';
+ }
+
+ /**
+ * @param string the skin ID of this control
+ * @throws TInvalidOperationException if the SkinID is set in a stage later than PreInit, or if the skin is applied already.
+ */
+ public function setSkinID($value)
+ {
+ if(($this->_flags & self::IS_SKIN_APPLIED) || $this->_stage>=self::CS_CHILD_INITIALIZED)
+ throw new TInvalidOperationException('control_skinid_unchangeable',get_class($this));
+ else
+ $this->_rf[self::RF_SKIN_ID]=$value;
+ }
+
+ /**
+ * @param string the skin ID of this control
+ * @throws TInvalidOperationException if the SkinID is set in a stage later than PreInit, or if the skin is applied already.
+ */
+ public function getIsSkinApplied()
+ {
+ return ($this->_flags & self::IS_SKIN_APPLIED);
+ }
+
+ /**
+ * @return boolean whether theming is enabled for this control.
+ * The theming is enabled if the control and all its parents have it enabled.
+ */
+ public function getEnableTheming()
+ {
+ if($this->_flags & self::IS_DISABLE_THEMING)
+ return false;
+ else
+ return $this->_parent?$this->_parent->getEnableTheming():true;
+ }
+
+ /**
+ * @param boolean whether to enable theming
+ * @throws TInvalidOperationException if this method is invoked after OnPreInit
+ */
+ public function setEnableTheming($value)
+ {
+ if($this->_stage>=self::CS_CHILD_INITIALIZED)
+ throw new TInvalidOperationException('control_enabletheming_unchangeable',get_class($this),$this->getUniqueID());
+ else if(TPropertyValue::ensureBoolean($value))
+ $this->_flags &= ~self::IS_DISABLE_THEMING;
+ else
+ $this->_flags |= self::IS_DISABLE_THEMING;
+ }
+
+ /**
+ * Returns custom data associated with this control.
+ * A control may be associated with some custom data for various purposes.
+ * For example, a button may be associated with a string to identify itself
+ * in a generic OnClick event handler.
+ * @return mixed custom data associated with this control. Defaults to null.
+ */
+ public function getCustomData()
+ {
+ return $this->getViewState('CustomData',null);
+ }
+
+ /**
+ * Associates custom data with this control.
+ * Note, the custom data must be serializable and unserializable.
+ * @param mixed custom data
+ */
+ public function setCustomData($value)
+ {
+ $this->setViewState('CustomData',$value,null);
+ }
+
+ /**
+ * @return boolean whether the control has child controls
+ */
+ public function getHasControls()
+ {
+ return isset($this->_rf[self::RF_CONTROLS]) && $this->_rf[self::RF_CONTROLS]->getCount()>0;
+ }
+
+ /**
+ * @return TControlCollection the child control collection
+ */
+ public function getControls()
+ {
+ if(!isset($this->_rf[self::RF_CONTROLS]))
+ $this->_rf[self::RF_CONTROLS]=$this->createControlCollection();
+ return $this->_rf[self::RF_CONTROLS];
+ }
+
+ /**
+ * Creates a control collection object that is to be used to hold child controls
+ * @return TControlCollection control collection
+ * @see getControls
+ */
+ protected function createControlCollection()
+ {
+ return $this->getAllowChildControls()?new TControlCollection($this):new TEmptyControlCollection($this);
+ }
+
+ /**
+ * Checks if a control is visible.
+ * If parent check is required, then a control is visible only if the control
+ * and all its ancestors are visible.
+ * @param boolean whether the parents should also be checked if visible
+ * @return boolean whether the control is visible (default=true).
+ */
+ public function getVisible($checkParents=true)
+ {
+ if($checkParents)
+ {
+ for($control=$this;$control;$control=$control->_parent)
+ if(!$control->getVisible(false))
+ return false;
+ return true;
+ }
+ else
+ return $this->getViewState('Visible',true);
+ }
+
+ /**
+ * @param boolean whether the control is visible
+ */
+ public function setVisible($value)
+ {
+ $this->setViewState('Visible',TPropertyValue::ensureBoolean($value),true);
+ }
+
+ /**
+ * Returns a value indicating whether the control is enabled.
+ * A control is enabled if it allows client user interaction.
+ * If $checkParents is true, all parent controls will be checked,
+ * and unless they are all enabled, false will be returned.
+ * The property Enabled is mainly used for {@link TWebControl}
+ * derived controls.
+ * @param boolean whether the parents should also be checked enabled
+ * @return boolean whether the control is enabled.
+ */
+ public function getEnabled($checkParents=false)
+ {
+ if($checkParents)
+ {
+ for($control=$this;$control;$control=$control->_parent)
+ if(!$control->getViewState('Enabled',true))
+ return false;
+ return true;
+ }
+ else
+ return $this->getViewState('Enabled',true);
+ }
+
+ /**
+ * @param boolean whether the control is to be enabled.
+ */
+ public function setEnabled($value)
+ {
+ $this->setViewState('Enabled',TPropertyValue::ensureBoolean($value),true);
+ }
+
+ /**
+ * @return boolean whether the control has custom attributes
+ */
+ public function getHasAttributes()
+ {
+ if($attributes=$this->getViewState('Attributes',null))
+ return $attributes->getCount()>0;
+ else
+ return false;
+ }
+
+ /**
+ * Returns the list of custom attributes.
+ * Custom attributes are name-value pairs that may be rendered
+ * as HTML tags' attributes.
+ * @return TAttributeCollection the list of custom attributes
+ */
+ public function getAttributes()
+ {
+ if($attributes=$this->getViewState('Attributes',null))
+ return $attributes;
+ else
+ {
+ $attributes=new TAttributeCollection;
+ $this->setViewState('Attributes',$attributes,null);
+ return $attributes;
+ }
+ }
+
+ /**
+ * @return boolean whether the named attribute exists
+ */
+ public function hasAttribute($name)
+ {
+ if($attributes=$this->getViewState('Attributes',null))
+ return $attributes->contains($name);
+ else
+ return false;
+ }
+
+ /**
+ * @return string attribute value, null if attribute does not exist
+ */
+ public function getAttribute($name)
+ {
+ if($attributes=$this->getViewState('Attributes',null))
+ return $attributes->itemAt($name);
+ else
+ return null;
+ }
+
+ /**
+ * Sets a custom control attribute.
+ * @param string attribute name
+ * @param string value of the attribute
+ */
+ public function setAttribute($name,$value)
+ {
+ $this->getAttributes()->add($name,$value);
+ }
+
+ /**
+ * Removes the named attribute.
+ * @param string the name of the attribute to be removed.
+ * @return string attribute value removed, null if attribute does not exist.
+ */
+ public function removeAttribute($name)
+ {
+ if($attributes=$this->getViewState('Attributes',null))
+ return $attributes->remove($name);
+ else
+ return null;
+ }
+
+ /**
+ * @return boolean whether viewstate is enabled
+ */
+ public function getEnableViewState($checkParents=false)
+ {
+ if($checkParents)
+ {
+ for($control=$this;$control!==null;$control=$control->getParent())
+ if($control->_flags & self::IS_DISABLE_VIEWSTATE)
+ return false;
+ return true;
+ }
+ else
+ return !($this->_flags & self::IS_DISABLE_VIEWSTATE);
+ }
+
+ /**
+ * @param boolean set whether to enable viewstate
+ */
+ public function setEnableViewState($value)
+ {
+ if(TPropertyValue::ensureBoolean($value))
+ $this->_flags &= ~self::IS_DISABLE_VIEWSTATE;
+ else
+ $this->_flags |= self::IS_DISABLE_VIEWSTATE;
+ }
+
+ /**
+ * Returns a controlstate value.
+ *
+ * This function is mainly used in defining getter functions for control properties
+ * that must be kept in controlstate.
+ * @param string the name of the controlstate value to be returned
+ * @param mixed the default value. If $key is not found in controlstate, $defaultValue will be returned
+ * @return mixed the controlstate value corresponding to $key
+ */
+ protected function getControlState($key,$defaultValue=null)
+ {
+ return isset($this->_rf[self::RF_CONTROLSTATE][$key])?$this->_rf[self::RF_CONTROLSTATE][$key]:$defaultValue;
+ }
+
+ /**
+ * Sets a controlstate value.
+ *
+ * This function is very useful in defining setter functions for control properties
+ * that must be kept in controlstate.
+ * Make sure that the controlstate value must be serializable and unserializable.
+ * @param string the name of the controlstate value
+ * @param mixed the controlstate value to be set
+ * @param mixed default value. If $value===$defaultValue, the item will be cleared from controlstate
+ */
+ protected function setControlState($key,$value,$defaultValue=null)
+ {
+ if($value===$defaultValue)
+ unset($this->_rf[self::RF_CONTROLSTATE][$key]);
+ else
+ $this->_rf[self::RF_CONTROLSTATE][$key]=$value;
+ }
+
+ /**
+ * Clears a controlstate value.
+ * @param string the name of the controlstate value to be cleared
+ */
+ protected function clearControlState($key)
+ {
+ unset($this->_rf[self::RF_CONTROLSTATE][$key]);
+ }
+
+ /**
+ * Sets a value indicating whether we should keep data in viewstate.
+ * When it is false, data saved via setViewState() will not be persisted.
+ * By default, it is true, meaning data will be persisted across postbacks.
+ * @param boolean whether data should be persisted
+ */
+ public function trackViewState($enabled)
+ {
+ $this->_trackViewState=TPropertyValue::ensureBoolean($enabled);
+ }
+
+ /**
+ * Returns a viewstate value.
+ *
+ * This function is very useful in defining getter functions for component properties
+ * that must be kept in viewstate.
+ * @param string the name of the viewstate value to be returned
+ * @param mixed the default value. If $key is not found in viewstate, $defaultValue will be returned
+ * @return mixed the viewstate value corresponding to $key
+ */
+ public function getViewState($key,$defaultValue=null)
+ {
+ if(isset($this->_viewState[$key]))
+ return $this->_viewState[$key]!==null?$this->_viewState[$key]:$defaultValue;
+ else if(isset($this->_tempState[$key]))
+ {
+ if(is_object($this->_tempState[$key]) && $this->_trackViewState)
+ $this->_viewState[$key]=$this->_tempState[$key];
+ return $this->_tempState[$key];
+ }
+ else
+ return $defaultValue;
+ }
+
+ /**
+ * Sets a viewstate value.
+ *
+ * This function is very useful in defining setter functions for control properties
+ * that must be kept in viewstate.
+ * Make sure that the viewstate value must be serializable and unserializable.
+ * @param string the name of the viewstate value
+ * @param mixed the viewstate value to be set
+ * @param mixed default value. If $value===$defaultValue, the item will be cleared from the viewstate.
+ */
+ public function setViewState($key,$value,$defaultValue=null)
+ {
+ if($this->_trackViewState)
+ {
+ $this->_viewState[$key]=$value;
+ unset($this->_tempState[$key]);
+ }
+ else
+ {
+ unset($this->_viewState[$key]);
+ $this->_tempState[$key]=$value;
+ }
+ }
+
+ /**
+ * Clears a viewstate value.
+ * @param string the name of the viewstate value to be cleared
+ */
+ public function clearViewState($key)
+ {
+ unset($this->_viewState[$key]);
+ unset($this->_tempState[$key]);
+ }
+
+ /**
+ * Sets up the binding between a property (or property path) and an expression.
+ * The context of the expression is the template control (or the control itself if it is a page).
+ * @param string the property name, or property path
+ * @param string the expression
+ */
+ public function bindProperty($name,$expression)
+ {
+ $this->_rf[self::RF_DATA_BINDINGS][$name]=$expression;
+ }
+
+ /**
+ * Breaks the binding between a property (or property path) and an expression.
+ * @param string the property name (or property path)
+ */
+ public function unbindProperty($name)
+ {
+ unset($this->_rf[self::RF_DATA_BINDINGS][$name]);
+ }
+
+ /**
+ * Sets up the binding between a property (or property path) and an expression.
+ * Unlike regular databinding, the expression bound by this method
+ * is automatically evaluated during {@link prerenderRecursive()}.
+ * The context of the expression is the template control (or the control itself if it is a page).
+ * @param string the property name, or property path
+ * @param string the expression
+ */
+ public function autoBindProperty($name,$expression)
+ {
+ $this->_rf[self::RF_AUTO_BINDINGS][$name]=$expression;
+ }
+
+ /**
+ * Performs the databinding for this control.
+ */
+ public function dataBind()
+ {
+ $this->dataBindProperties();
+ $this->onDataBinding(null);
+ $this->dataBindChildren();
+ }
+
+ /**
+ * Databinding properties of the control.
+ */
+ protected function dataBindProperties()
+ {
+ Prado::trace("Data bind properties",'System.Web.UI.TControl');
+ if(isset($this->_rf[self::RF_DATA_BINDINGS]))
+ {
+ if(($context=$this->getTemplateControl())===null)
+ $context=$this;
+ foreach($this->_rf[self::RF_DATA_BINDINGS] as $property=>$expression)
+ $this->setSubProperty($property,$context->evaluateExpression($expression));
+ }
+ }
+
+ /**
+ * Auto databinding properties of the control.
+ */
+ protected function autoDataBindProperties()
+ {
+ if(isset($this->_rf[self::RF_AUTO_BINDINGS]))
+ {
+ if(($context=$this->getTemplateControl())===null)
+ $context=$this;
+ foreach($this->_rf[self::RF_AUTO_BINDINGS] as $property=>$expression)
+ $this->setSubProperty($property,$context->evaluateExpression($expression));
+ }
+ }
+
+ /**
+ * Databinding child controls.
+ */
+ protected function dataBindChildren()
+ {
+ Prado::trace("dataBindChildren()",'System.Web.UI.TControl');
+ if(isset($this->_rf[self::RF_CONTROLS]))
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ if($control instanceof IBindable)
+ $control->dataBind();
+ }
+ }
+
+ /**
+ * @return boolean whether child controls have been created
+ */
+ final protected function getChildControlsCreated()
+ {
+ return ($this->_flags & self::IS_CHILD_CREATED)!==0;
+ }
+
+ /**
+ * Sets a value indicating whether child controls are created.
+ * If false, any existing child controls will be cleared up.
+ * @param boolean whether child controls are created
+ */
+ final protected function setChildControlsCreated($value)
+ {
+ if($value)
+ $this->_flags |= self::IS_CHILD_CREATED;
+ else
+ {
+ if($this->getHasControls() && ($this->_flags & self::IS_CHILD_CREATED))
+ $this->getControls()->clear();
+ $this->_flags &= ~self::IS_CHILD_CREATED;
+ }
+ }
+
+ /**
+ * Ensures child controls are created.
+ * If child controls are not created yet, this method will invoke
+ * {@link createChildControls} to create them.
+ */
+ public function ensureChildControls()
+ {
+ if(!($this->_flags & self::IS_CHILD_CREATED) && !($this->_flags & self::IS_CREATING_CHILD))
+ {
+ try
+ {
+ $this->_flags |= self::IS_CREATING_CHILD;
+ if(isset($this->_rf[self::RF_ADAPTER]))
+ $this->_rf[self::RF_ADAPTER]->createChildControls();
+ else
+ $this->createChildControls();
+ $this->_flags &= ~self::IS_CREATING_CHILD;
+ $this->_flags |= self::IS_CHILD_CREATED;
+ }
+ catch(Exception $e)
+ {
+ $this->_flags &= ~self::IS_CREATING_CHILD;
+ $this->_flags |= self::IS_CHILD_CREATED;
+ throw $e;
+ }
+ }
+ }
+
+ /**
+ * Creates child controls.
+ * This method can be overriden for controls who want to have their controls.
+ * Do not call this method directly. Instead, call {@link ensureChildControls}
+ * to ensure child controls are created only once.
+ */
+ public function createChildControls()
+ {
+ }
+
+ /**
+ * Finds a control by ID path within the current naming container.
+ * The current naming container is either the control itself
+ * if it implements {@link INamingContainer} or the control's naming container.
+ * The ID path is an ID sequence separated by {@link TControl::ID_SEPARATOR}.
+ * For example, 'Repeater1.Item1.Button1' looks for a control with ID 'Button1'
+ * whose naming container is 'Item1' whose naming container is 'Repeater1'.
+ * @param string ID of the control to be looked up
+ * @return TControl|null the control found, null if not found
+ * @throws TInvalidDataValueException if a control's ID is found not unique within its naming container.
+ */
+ public function findControl($id)
+ {
+ $id=strtr($id,'.',self::ID_SEPARATOR);
+ $container=($this instanceof INamingContainer)?$this:$this->getNamingContainer();
+ if(!$container || !$container->getHasControls())
+ return null;
+ if(!isset($container->_rf[self::RF_NAMED_CONTROLS]))
+ {
+ $container->_rf[self::RF_NAMED_CONTROLS]=array();
+ $container->fillNameTable($container,$container->_rf[self::RF_CONTROLS]);
+ }
+ if(($pos=strpos($id,self::ID_SEPARATOR))===false)
+ return isset($container->_rf[self::RF_NAMED_CONTROLS][$id])?$container->_rf[self::RF_NAMED_CONTROLS][$id]:null;
+ else
+ {
+ $cid=substr($id,0,$pos);
+ $sid=substr($id,$pos+1);
+ if(isset($container->_rf[self::RF_NAMED_CONTROLS][$cid]))
+ return $container->_rf[self::RF_NAMED_CONTROLS][$cid]->findControl($sid);
+ else
+ return null;
+ }
+ }
+
+ /**
+ * Finds all child and grand-child controls that are of the specified type.
+ * @param string the class name
+ * @param boolean whether the type comparison is strict or not. If false, controls of the parent classes of the specified class will also be returned.
+ * @return array list of controls found
+ */
+ public function findControlsByType($type,$strict=true)
+ {
+ $controls=array();
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if(is_object($control) && (get_class($control)===$type || (!$strict && ($control instanceof $type))))
+ $controls[]=$control;
+ if(($control instanceof TControl) && $control->getHasControls())
+ $controls=array_merge($controls,$control->findControlsByType($type,$strict));
+ }
+ }
+ return $controls;
+ }
+
+ /**
+ * Finds all child and grand-child controls with the specified ID.
+ * Note, this method is different from {@link findControl} in that
+ * it searches through all controls that have this control as the ancestor
+ * while {@link findcontrol} only searches through controls that have this
+ * control as the direct naming container.
+ * @param string the ID being looked for
+ * @return array list of controls found
+ */
+ public function findControlsByID($id)
+ {
+ $controls=array();
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ {
+ if($control->_id===$id)
+ $controls[]=$control;
+ $controls=array_merge($controls,$control->findControlsByID($id));
+ }
+ }
+ }
+ return $controls;
+ }
+
+ /**
+ * Resets the control as a naming container.
+ * Only framework developers should use this method.
+ */
+ public function clearNamingContainer()
+ {
+ unset($this->_rf[self::RF_NAMED_CONTROLS_ID]);
+ $this->clearNameTable();
+ }
+
+ /**
+ * Registers an object by a name.
+ * A registered object can be accessed like a public member variable.
+ * This method should only be used by framework and control developers.
+ * @param string name of the object
+ * @param object object to be declared
+ * @see __get
+ */
+ public function registerObject($name,$object)
+ {
+ if(isset($this->_rf[self::RF_NAMED_OBJECTS][$name]))
+ throw new TInvalidOperationException('control_object_reregistered',$name);
+ $this->_rf[self::RF_NAMED_OBJECTS][$name]=$object;
+ }
+
+ /**
+ * Unregisters an object by name.
+ * @param string name of the object
+ * @see registerObject
+ */
+ public function unregisterObject($name)
+ {
+ unset($this->_rf[self::RF_NAMED_OBJECTS][$name]);
+ }
+
+ /**
+ * @return boolean whether an object has been registered with the name
+ * @see registerObject
+ */
+ public function isObjectRegistered($name)
+ {
+ return isset($this->_rf[self::RF_NAMED_OBJECTS][$name]);
+ }
+
+ /**
+ * @return boolean true if the child control has been initialized.
+ */
+ public function getHasChildInitialized()
+ {
+ return $this->getControlStage() >= self::CS_CHILD_INITIALIZED;
+ }
+
+ /**
+ * @return boolean true if the onInit event has raised.
+ */
+ public function getHasInitialized()
+ {
+ return $this->getControlStage() >= self::CS_INITIALIZED;
+ }
+
+ /**
+ * @return boolean true if the control has loaded post data.
+ */
+ public function getHasLoadedPostData()
+ {
+ return $this->getControlStage() >= self::CS_STATE_LOADED;
+ }
+
+ /**
+ * @return boolean true if the onLoad event has raised.
+ */
+ public function getHasLoaded()
+ {
+ return $this->getControlStage() >= self::CS_LOADED;
+ }
+
+ /**
+ * @return boolean true if onPreRender event has raised.
+ */
+ public function getHasPreRendered()
+ {
+ return $this->getControlStage() >= self::CS_PRERENDERED;
+ }
+
+ /**
+ * Returns the named registered object.
+ * A component with explicit ID on a template will be registered to
+ * the template owner. This method allows you to obtain this component
+ * with the ID.
+ * @return mixed the named registered object. Null if object is not found.
+ */
+ public function getRegisteredObject($name)
+ {
+ return isset($this->_rf[self::RF_NAMED_OBJECTS][$name])?$this->_rf[self::RF_NAMED_OBJECTS][$name]:null;
+ }
+
+ /**
+ * @return boolean whether body contents are allowed for this control. Defaults to true.
+ */
+ public function getAllowChildControls()
+ {
+ return true;
+ }
+
+ /**
+ * Adds the object instantiated on a template to the child control collection.
+ * This method overrides the parent implementation.
+ * Only framework developers and control developers should use this method.
+ * @param string|TComponent text string or component parsed and instantiated in template
+ * @see createdOnTemplate
+ */
+ public function addParsedObject($object)
+ {
+ $this->getControls()->add($object);
+ }
+
+ /**
+ * Clears up the child state data.
+ * After a control loads its state, those state that do not belong to
+ * any existing child controls are stored as child state.
+ * This method will remove these state.
+ * Only frameworker developers and control developers should use this method.
+ */
+ final protected function clearChildState()
+ {
+ unset($this->_rf[self::RF_CHILD_STATE]);
+ }
+
+ /**
+ * @param TControl the potential ancestor control
+ * @return boolean if the control is a descendent (parent, parent of parent, etc.)
+ * of the specified control
+ */
+ final protected function isDescendentOf($ancestor)
+ {
+ $control=$this;
+ while($control!==$ancestor && $control->_parent)
+ $control=$control->_parent;
+ return $control===$ancestor;
+ }
+
+ /**
+ * Adds a control into the child collection of the control.
+ * Control lifecycles will be caught up during the addition.
+ * Only framework developers should use this method.
+ * @param TControl the new child control
+ */
+ public function addedControl($control)
+ {
+ if($control->_parent)
+ $control->_parent->getControls()->remove($control);
+ $control->_parent=$this;
+ $control->_page=$this->getPage();
+ $namingContainer=($this instanceof INamingContainer)?$this:$this->_namingContainer;
+ if($namingContainer)
+ {
+ $control->_namingContainer=$namingContainer;
+ if($control->_id==='')
+ $control->generateAutomaticID();
+ else
+ $namingContainer->clearNameTable();
+ $control->clearCachedUniqueID($control instanceof INamingContainer);
+ }
+
+ if($this->_stage>=self::CS_CHILD_INITIALIZED)
+ {
+ $control->initRecursive($namingContainer);
+ if($this->_stage>=self::CS_STATE_LOADED)
+ {
+ if(isset($this->_rf[self::RF_CHILD_STATE][$control->_id]))
+ {
+ $state=$this->_rf[self::RF_CHILD_STATE][$control->_id];
+ unset($this->_rf[self::RF_CHILD_STATE][$control->_id]);
+ }
+ else
+ $state=null;
+ $control->loadStateRecursive($state,!($this->_flags & self::IS_DISABLE_VIEWSTATE));
+ if($this->_stage>=self::CS_LOADED)
+ {
+ $control->loadRecursive();
+ if($this->_stage>=self::CS_PRERENDERED)
+ $control->preRenderRecursive();
+ }
+ }
+ }
+ }
+
+ /**
+ * Removes a control from the child collection of the control.
+ * Only framework developers should use this method.
+ * @param TControl the child control removed
+ */
+ public function removedControl($control)
+ {
+ if($this->_namingContainer)
+ $this->_namingContainer->clearNameTable();
+ $control->unloadRecursive();
+ $control->_parent=null;
+ $control->_page=null;
+ $control->_namingContainer=null;
+ $control->_tplControl=null;
+ //$control->_stage=self::CS_CONSTRUCTED;
+ if(!($control->_flags & self::IS_ID_SET))
+ $control->_id='';
+ else
+ unset($this->_rf[self::RF_NAMED_OBJECTS][$control->_id]);
+ $control->clearCachedUniqueID(true);
+ }
+
+ /**
+ * Performs the Init step for the control and all its child controls.
+ * Only framework developers should use this method.
+ * @param TControl the naming container control
+ */
+ protected function initRecursive($namingContainer=null)
+ {
+ $this->ensureChildControls();
+ if($this->getHasControls())
+ {
+ if($this instanceof INamingContainer)
+ $namingContainer=$this;
+ $page=$this->getPage();
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ {
+ $control->_namingContainer=$namingContainer;
+ $control->_page=$page;
+ if($control->_id==='' && $namingContainer)
+ $control->generateAutomaticID();
+ $control->initRecursive($namingContainer);
+ }
+ }
+ }
+ if($this->_stage<self::CS_INITIALIZED)
+ {
+ $this->_stage=self::CS_CHILD_INITIALIZED;
+ if(($page=$this->getPage()) && $this->getEnableTheming() && !($this->_flags & self::IS_SKIN_APPLIED))
+ {
+ $page->applyControlSkin($this);
+ $this->_flags |= self::IS_SKIN_APPLIED;
+ }
+ if(isset($this->_rf[self::RF_ADAPTER]))
+ $this->_rf[self::RF_ADAPTER]->onInit(null);
+ else
+ $this->onInit(null);
+ $this->_stage=self::CS_INITIALIZED;
+ }
+ }
+
+ /**
+ * Performs the Load step for the control and all its child controls.
+ * Only framework developers should use this method.
+ */
+ protected function loadRecursive()
+ {
+ if($this->_stage<self::CS_LOADED)
+ {
+ if(isset($this->_rf[self::RF_ADAPTER]))
+ $this->_rf[self::RF_ADAPTER]->onLoad(null);
+ else
+ $this->onLoad(null);
+ }
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ $control->loadRecursive();
+ }
+ }
+ if($this->_stage<self::CS_LOADED)
+ $this->_stage=self::CS_LOADED;
+ }
+
+ /**
+ * Performs the PreRender step for the control and all its child controls.
+ * Only framework developers should use this method.
+ */
+ protected function preRenderRecursive()
+ {
+ $this->autoDataBindProperties();
+
+ if($this->getVisible(false))
+ {
+ if(isset($this->_rf[self::RF_ADAPTER]))
+ $this->_rf[self::RF_ADAPTER]->onPreRender(null);
+ else
+ $this->onPreRender(null);
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ $control->preRenderRecursive();
+ else if($control instanceof TCompositeLiteral)
+ $control->evaluateDynamicContent();
+ }
+ }
+ $this->addToPostDataLoader();
+ }
+ $this->_stage=self::CS_PRERENDERED;
+ }
+
+ /**
+ * Add controls implementing IPostBackDataHandler to post data loaders.
+ */
+ protected function addToPostDataLoader()
+ {
+ if($this instanceof IPostBackDataHandler)
+ $this->getPage()->registerPostDataLoader($this);
+ }
+
+ /**
+ * Performs the Unload step for the control and all its child controls.
+ * Only framework developers should use this method.
+ */
+ protected function unloadRecursive()
+ {
+ if(!($this->_flags & self::IS_ID_SET))
+ $this->_id='';
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ if($control instanceof TControl)
+ $control->unloadRecursive();
+ }
+ if(isset($this->_rf[self::RF_ADAPTER]))
+ $this->_rf[self::RF_ADAPTER]->onUnload(null);
+ else
+ $this->onUnload(null);
+ }
+
+ /**
+ * This method is invoked when the control enters 'OnInit' stage.
+ * The method raises 'OnInit' event.
+ * If you override this method, be sure to call the parent implementation
+ * so that the event handlers can be invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ public function onInit($param)
+ {
+ $this->raiseEvent('OnInit',$this,$param);
+ }
+
+ /**
+ * This method is invoked when the control enters 'OnLoad' stage.
+ * The method raises 'OnLoad' event.
+ * If you override this method, be sure to call the parent implementation
+ * so that the event handlers can be invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ public function onLoad($param)
+ {
+ $this->raiseEvent('OnLoad',$this,$param);
+ }
+
+ /**
+ * Raises 'OnDataBinding' event.
+ * This method is invoked when {@link dataBind} is invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ public function onDataBinding($param)
+ {
+ Prado::trace("onDataBinding()",'System.Web.UI.TControl');
+ $this->raiseEvent('OnDataBinding',$this,$param);
+ }
+
+
+ /**
+ * This method is invoked when the control enters 'OnUnload' stage.
+ * The method raises 'OnUnload' event.
+ * If you override this method, be sure to call the parent implementation
+ * so that the event handlers can be invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ public function onUnload($param)
+ {
+ $this->raiseEvent('OnUnload',$this,$param);
+ }
+
+ /**
+ * This method is invoked when the control enters 'OnPreRender' stage.
+ * The method raises 'OnPreRender' event.
+ * If you override this method, be sure to call the parent implementation
+ * so that the event handlers can be invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ public function onPreRender($param)
+ {
+ $this->raiseEvent('OnPreRender',$this,$param);
+ }
+
+ /**
+ * Invokes the parent's bubbleEvent method.
+ * A control who wants to bubble an event must call this method in its onEvent method.
+ * @param TControl sender of the event
+ * @param TEventParameter event parameter
+ * @see bubbleEvent
+ */
+ protected function raiseBubbleEvent($sender,$param)
+ {
+ $control=$this;
+ while($control=$control->_parent)
+ {
+ if($control->bubbleEvent($sender,$param))
+ break;
+ }
+ }
+
+ /**
+ * This method responds to a bubbled event.
+ * This method should be overriden to provide customized response to a bubbled event.
+ * Check the type of event parameter to determine what event is bubbled currently.
+ * @param TControl sender of the event
+ * @param TEventParameter event parameters
+ * @return boolean true if the event bubbling is handled and no more bubbling.
+ * @see raiseBubbleEvent
+ */
+ public function bubbleEvent($sender,$param)
+ {
+ return false;
+ }
+
+ /**
+ * Broadcasts an event.
+ * The event will be sent to all controls on the current page hierarchy.
+ * If a control defines the event, the event will be raised for the control.
+ * If a control implements {@link IBroadcastEventReceiver}, its
+ * {@link IBroadcastEventReceiver::broadcastEventReceived broadcastEventReceived()} method will
+ * be invoked which gives the control a chance to respond to the event.
+ * For example, when broadcasting event 'OnClick', all controls having 'OnClick'
+ * event will have this event raised, and all controls implementing
+ * {@link IBroadcastEventReceiver} will also have its
+ * {@link IBroadcastEventReceiver::broadcastEventReceived broadcastEventReceived()}
+ * invoked.
+ * @param string name of the broadcast event
+ * @param TControl sender of this event
+ * @param TEventParameter event parameter
+ */
+ public function broadcastEvent($name,$sender,$param)
+ {
+ $rootControl=(($page=$this->getPage())===null)?$this:$page;
+ $rootControl->broadcastEventInternal($name,$sender,new TBroadcastEventParameter($name,$param));
+ }
+
+ /**
+ * Recursively broadcasts an event.
+ * This method should only be used by framework developers.
+ * @param string name of the broadcast event
+ * @param TControl sender of the event
+ * @param TBroadcastEventParameter event parameter
+ */
+ private function broadcastEventInternal($name,$sender,$param)
+ {
+ if($this->hasEvent($name))
+ $this->raiseEvent($name,$sender,$param->getParameter());
+ if($this instanceof IBroadcastEventReceiver)
+ $this->broadcastEventReceived($sender,$param);
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ $control->broadcastEventInternal($name,$sender,$param);
+ }
+ }
+ }
+
+ /**
+ * Traverse the whole control hierarchy rooted at this control.
+ * Callback function may be invoked for each control being visited.
+ * A pre-callback is invoked before traversing child controls;
+ * A post-callback is invoked after traversing child controls.
+ * Callback functions can be global functions or class methods.
+ * They must be of the following signature:
+ * <code>
+ * function callback_func($control,$param) {...}
+ * </code>
+ * where $control refers to the control being visited and $param
+ * is the parameter that is passed originally when calling this traverse function.
+ *
+ * @param mixed parameter to be passed to callbacks for each control
+ * @param callback callback invoked before traversing child controls. If null, it is ignored.
+ * @param callback callback invoked after traversing child controls. If null, it is ignored.
+ */
+ protected function traverseChildControls($param,$preCallback=null,$postCallback=null)
+ {
+ if($preCallback!==null)
+ call_user_func($preCallback,$this,$param);
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ {
+ $control->traverseChildControls($param,$preCallback,$postCallback);
+ }
+ }
+ }
+ if($postCallback!==null)
+ call_user_func($postCallback,$this,$param);
+ }
+
+ /**
+ * Renders the control.
+ * Only when the control is visible will the control be rendered.
+ * @param THtmlWriter the writer used for the rendering purpose
+ */
+ public function renderControl($writer)
+ {
+ if($this instanceof IActiveControl || $this->getVisible(false))
+ {
+ if(isset($this->_rf[self::RF_ADAPTER]))
+ $this->_rf[self::RF_ADAPTER]->render($writer);
+ else
+ $this->render($writer);
+ }
+ }
+
+ /**
+ * Renders the control.
+ * This method is invoked by {@link renderControl} when the control is visible.
+ * You can override this method to provide customized rendering of the control.
+ * By default, the control simply renders all its child contents.
+ * @param THtmlWriter the writer used for the rendering purpose
+ */
+ public function render($writer)
+ {
+ $this->renderChildren($writer);
+ }
+
+ /**
+ * Renders the children of the control.
+ * This method iterates through all child controls and static text strings
+ * and renders them in order.
+ * @param THtmlWriter the writer used for the rendering purpose
+ */
+ public function renderChildren($writer)
+ {
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if(is_string($control))
+ $writer->write($control);
+ else if($control instanceof TControl)
+ $control->renderControl($writer);
+ else if($control instanceof IRenderable)
+ $control->render($writer);
+ }
+ }
+ }
+
+ /**
+ * This method is invoked when control state is to be saved.
+ * You can override this method to do last step state saving.
+ * Parent implementation must be invoked.
+ */
+ public function saveState()
+ {
+ }
+
+ /**
+ * This method is invoked right after the control has loaded its state.
+ * You can override this method to initialize data from the control state.
+ * Parent implementation must be invoked.
+ */
+ public function loadState()
+ {
+ }
+
+ /**
+ * Loads state (viewstate and controlstate) into a control and its children.
+ * This method should only be used by framework developers.
+ * @param array the collection of the state
+ * @param boolean whether the viewstate should be loaded
+ */
+ protected function loadStateRecursive(&$state,$needViewState=true)
+ {
+ if(is_array($state))
+ {
+ // A null state means the stateful properties all take default values.
+ // So if the state is enabled, we have to assign the null value.
+ $needViewState=($needViewState && !($this->_flags & self::IS_DISABLE_VIEWSTATE));
+ if(isset($state[1]))
+ {
+ $this->_rf[self::RF_CONTROLSTATE]=&$state[1];
+ unset($state[1]);
+ }
+ else
+ unset($this->_rf[self::RF_CONTROLSTATE]);
+ if($needViewState)
+ {
+ if(isset($state[0]))
+ $this->_viewState=&$state[0];
+ else
+ $this->_viewState=array();
+ }
+ unset($state[0]);
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ {
+ if(isset($state[$control->_id]))
+ {
+ $control->loadStateRecursive($state[$control->_id],$needViewState);
+ unset($state[$control->_id]);
+ }
+ }
+ }
+ }
+ if(!empty($state))
+ $this->_rf[self::RF_CHILD_STATE]=&$state;
+ }
+ $this->_stage=self::CS_STATE_LOADED;
+ if(isset($this->_rf[self::RF_ADAPTER]))
+ $this->_rf[self::RF_ADAPTER]->loadState();
+ else
+ $this->loadState();
+ }
+
+ /**
+ * Saves all control state (viewstate and controlstate) as a collection.
+ * This method should only be used by framework developers.
+ * @param boolean whether the viewstate should be saved
+ * @return array the collection of the control state (including its children's state).
+ */
+ protected function &saveStateRecursive($needViewState=true)
+ {
+ if(isset($this->_rf[self::RF_ADAPTER]))
+ $this->_rf[self::RF_ADAPTER]->saveState();
+ else
+ $this->saveState();
+ $needViewState=($needViewState && !($this->_flags & self::IS_DISABLE_VIEWSTATE));
+ $state=array();
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ $state[$control->_id]=&$control->saveStateRecursive($needViewState);
+ }
+ }
+ if($needViewState && !empty($this->_viewState))
+ $state[0]=&$this->_viewState;
+ if(isset($this->_rf[self::RF_CONTROLSTATE]))
+ $state[1]=&$this->_rf[self::RF_CONTROLSTATE];
+ return $state;
+ }
+
+ /**
+ * Applies a stylesheet skin to a control.
+ * @param TPage the page containing the control
+ * @throws TInvalidOperationException if the stylesheet skin is applied already
+ */
+ public function applyStyleSheetSkin($page)
+ {
+ if($page && !($this->_flags & self::IS_STYLESHEET_APPLIED))
+ {
+ $page->applyControlStyleSheet($this);
+ $this->_flags |= self::IS_STYLESHEET_APPLIED;
+ }
+ else if($this->_flags & self::IS_STYLESHEET_APPLIED)
+ throw new TInvalidOperationException('control_stylesheet_applied',get_class($this));
+ }
+
+ /**
+ * Clears the cached UniqueID.
+ * If $recursive=true, all children's cached UniqueID will be cleared as well.
+ * @param boolean whether the clearing is recursive.
+ */
+ private function clearCachedUniqueID($recursive)
+ {
+ if($recursive && $this->_uid!==null && isset($this->_rf[self::RF_CONTROLS]))
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ if($control instanceof TControl)
+ $control->clearCachedUniqueID($recursive);
+ }
+ $this->_uid=null;
+ }
+
+ /**
+ * Generates an automatic ID for the control.
+ */
+ private function generateAutomaticID()
+ {
+ $this->_flags &= ~self::IS_ID_SET;
+ if(!isset($this->_namingContainer->_rf[self::RF_NAMED_CONTROLS_ID]))
+ $this->_namingContainer->_rf[self::RF_NAMED_CONTROLS_ID]=0;
+ $id=$this->_namingContainer->_rf[self::RF_NAMED_CONTROLS_ID]++;
+ $this->_id=self::AUTOMATIC_ID_PREFIX . $id;
+ $this->_namingContainer->clearNameTable();
+ }
+
+ /**
+ * Clears the list of the controls whose IDs are managed by the specified naming container.
+ */
+ private function clearNameTable()
+ {
+ unset($this->_rf[self::RF_NAMED_CONTROLS]);
+ }
+
+ /**
+ * Updates the list of the controls whose IDs are managed by the specified naming container.
+ * @param TControl the naming container
+ * @param TControlCollection list of controls
+ * @throws TInvalidDataValueException if a control's ID is not unique within its naming container.
+ */
+ private function fillNameTable($container,$controls)
+ {
+ foreach($controls as $control)
+ {
+ if($control instanceof TControl)
+ {
+ if($control->_id!=='')
+ {
+ if(isset($container->_rf[self::RF_NAMED_CONTROLS][$control->_id]))
+ throw new TInvalidDataValueException('control_id_nonunique',get_class($control),$control->_id);
+ else
+ $container->_rf[self::RF_NAMED_CONTROLS][$control->_id]=$control;
+ }
+ if(!($control instanceof INamingContainer) && $control->getHasControls())
+ $this->fillNameTable($container,$control->_rf[self::RF_CONTROLS]);
+ }
+ }
+ }
+}
+
+
+/**
+ * TControlCollection class
+ *
+ * TControlCollection implements a collection that enables
+ * controls to maintain a list of their child controls.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TControlCollection extends TList
+{
+ /**
+ * the control that owns this collection.
+ * @var TControl
+ */
+ private $_o;
+
+ /**
+ * Constructor.
+ * @param TControl the control that owns this collection.
+ * @param boolean whether the list is read-only
+ */
+ public function __construct(TControl $owner,$readOnly=false)
+ {
+ $this->_o=$owner;
+ parent::__construct(null,$readOnly);
+ }
+
+ /**
+ * @return TControl the control that owns this collection.
+ */
+ protected function getOwner()
+ {
+ return $this->_o;
+ }
+
+ /**
+ * Inserts an item at the specified position.
+ * This overrides the parent implementation by performing additional
+ * operations for each newly added child control.
+ * @param integer the speicified position.
+ * @param mixed new item
+ * @throws TInvalidDataTypeException if the item to be inserted is neither a string nor a TControl.
+ */
+ public function insertAt($index,$item)
+ {
+ if($item instanceof TControl)
+ {
+ parent::insertAt($index,$item);
+ $this->_o->addedControl($item);
+ }
+ else if(is_string($item) || ($item instanceof IRenderable))
+ parent::insertAt($index,$item);
+ else
+ throw new TInvalidDataTypeException('controlcollection_control_required');
+ }
+
+ /**
+ * Removes an item at the specified position.
+ * This overrides the parent implementation by performing additional
+ * cleanup work when removing a child control.
+ * @param integer the index of the item to be removed.
+ * @return mixed the removed item.
+ */
+ public function removeAt($index)
+ {
+ $item=parent::removeAt($index);
+ if($item instanceof TControl)
+ $this->_o->removedControl($item);
+ return $item;
+ }
+
+ /**
+ * Overrides the parent implementation by invoking {@link TControl::clearNamingContainer}
+ */
+ public function clear()
+ {
+ parent::clear();
+ if($this->_o instanceof INamingContainer)
+ $this->_o->clearNamingContainer();
+ }
+}
+
+/**
+ * TEmptyControlCollection class
+ *
+ * TEmptyControlCollection implements an empty control list that prohibits adding
+ * controls to it. This is useful for controls that do not allow child controls.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TEmptyControlCollection extends TControlCollection
+{
+ /**
+ * Constructor.
+ * @param TControl the control that owns this collection.
+ */
+ public function __construct(TControl $owner)
+ {
+ parent::__construct($owner,true);
+ }
+
+ /**
+ * Inserts an item at the specified position.
+ * This overrides the parent implementation by ignoring new addition.
+ * @param integer the speicified position.
+ * @param mixed new item
+ */
+ public function insertAt($index,$item)
+ {
+ if(!is_string($item)) // string is possible if property tag is used. we simply ignore it in this case
+ parent::insertAt($index,$item); // this will generate an exception in parent implementation
+ }
+}
+
+/**
+ * INamingContainer interface.
+ * INamingContainer marks a control as a naming container.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface INamingContainer
+{
+}
+
+/**
+ * IPostBackEventHandler interface
+ *
+ * If a control wants to respond to postback event, it must implement this interface.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface IPostBackEventHandler
+{
+ /**
+ * Raises postback event.
+ * The implementation of this function should raise appropriate event(s) (e.g. OnClick, OnCommand)
+ * indicating the component is responsible for the postback event.
+ * @param string the parameter associated with the postback event
+ */
+ public function raisePostBackEvent($param);
+}
+
+/**
+ * IPostBackDataHandler interface
+ *
+ * If a control wants to load post data, it must implement this interface.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface IPostBackDataHandler
+{
+ /**
+ * Loads user input data.
+ * The implementation of this function can use $values[$key] to get the user input
+ * data that are meant for the particular control.
+ * @param string the key that can be used to retrieve data from the input data collection
+ * @param array the input data collection
+ * @return boolean whether the data of the control has been changed
+ */
+ public function loadPostData($key,$values);
+ /**
+ * Raises postdata changed event.
+ * The implementation of this function should raise appropriate event(s) (e.g. OnTextChanged)
+ * indicating the control data is changed.
+ */
+ public function raisePostDataChangedEvent();
+ /**
+ * @return boolean whether postback causes the data change. Defaults to false for non-postback state.
+ */
+ public function getDataChanged();
+}
+
+
+/**
+ * IValidator interface
+ *
+ * If a control wants to validate user input, it must implement this interface.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface IValidator
+{
+ /**
+ * Validates certain data.
+ * The implementation of this function should validate certain data
+ * (e.g. data entered into TTextBox control).
+ * @return boolean whether the data passes the validation
+ */
+ public function validate();
+ /**
+ * @return boolean whether the previous {@link validate()} is successful.
+ */
+ public function getIsValid();
+ /**
+ * @param boolean whether the validator validates successfully
+ */
+ public function setIsValid($value);
+ /**
+ * @return string error message during last validate
+ */
+ public function getErrorMessage();
+ /**
+ * @param string error message for the validation
+ */
+ public function setErrorMessage($value);
+}
+
+
+/**
+ * IValidatable interface
+ *
+ * If a control wants to be validated by a validator, it must implement this interface.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface IValidatable
+{
+ /**
+ * @return mixed the value of the property to be validated.
+ */
+ public function getValidationPropertyValue();
+ /**
+ * @return boolean wether this control's validators validated successfully (must default to true)
+ */
+ public function getIsValid();
+ /**
+ * @return boolean wether this control's validators validated successfully
+ */
+ public function setIsValid($value);
+}
+
+/**
+ * IBroadcastEventReceiver interface
+ *
+ * If a control wants to check broadcast event, it must implement this interface.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface IBroadcastEventReceiver
+{
+ /**
+ * Handles broadcast event.
+ * This method is invoked automatically when an event is broadcasted.
+ * Within this method, you may check the event name given in
+ * the event parameter to determine whether you should respond to
+ * this event.
+ * @param TControl sender of the event
+ * @param TBroadCastEventParameter event parameter
+ */
+ public function broadcastEventReceived($sender,$param);
+}
+
+/**
+ * ITheme interface.
+ *
+ * This interface must be implemented by theme.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface ITheme
+{
+ /**
+ * Applies this theme to the specified control.
+ * @param TControl the control to be applied with this theme
+ */
+ public function applySkin($control);
+}
+
+/**
+ * ITemplate interface
+ *
+ * ITemplate specifies the interface for classes encapsulating
+ * parsed template structures.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface ITemplate
+{
+ /**
+ * Instantiates the template.
+ * Content in the template will be instantiated as components and text strings
+ * and passed to the specified parent control.
+ * @param TControl the parent control
+ */
+ public function instantiateIn($parent);
+}
+
+/**
+ * IButtonControl interface
+ *
+ * IButtonControl specifies the common properties and events that must
+ * be implemented by a button control, such as {@link TButton}, {@link TLinkButton},
+ * {@link TImageButton}.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface IButtonControl
+{
+ /**
+ * @return string caption of the button
+ */
+ public function getText();
+
+ /**
+ * @param string caption of the button
+ */
+ public function setText($value);
+
+ /**
+ * @return boolean whether postback event trigger by this button will cause input validation
+ */
+ public function getCausesValidation();
+
+ /**
+ * @param boolean whether postback event trigger by this button will cause input validation
+ */
+ public function setCausesValidation($value);
+
+ /**
+ * @return string the command name associated with the {@link onCommand OnCommand} event.
+ */
+ public function getCommandName();
+
+ /**
+ * @param string the command name associated with the {@link onCommand OnCommand} event.
+ */
+ public function setCommandName($value);
+
+ /**
+ * @return string the parameter associated with the {@link onCommand OnCommand} event
+ */
+ public function getCommandParameter();
+
+ /**
+ * @param string the parameter associated with the {@link onCommand OnCommand} event.
+ */
+ public function setCommandParameter($value);
+
+ /**
+ * @return string the group of validators which the button causes validation upon postback
+ */
+ public function getValidationGroup();
+
+ /**
+ * @param string the group of validators which the button causes validation upon postback
+ */
+ public function setValidationGroup($value);
+
+ /**
+ * Raises <b>OnClick</b> event.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ public function onClick($param);
+
+ /**
+ * Raises <b>OnCommand</b> event.
+ * @param TCommandEventParameter event parameter to be passed to the event handlers
+ */
+ public function onCommand($param);
+
+ /**
+ * @param boolean set by a panel to register this button as the default button for the panel.
+ */
+ public function setIsDefaultButton($value);
+
+ /**
+ * @return boolean true if this button is registered as a default button for a panel.
+ */
+ public function getIsDefaultButton();
+}
+
+/**
+ * ISurroundable interface
+ *
+ * Identifies controls that may create an additional surrounding tag. The id of the
+ * tag can be obtained with {@link getSurroundingTagID}.
+ *
+ * @package System.Web.UI
+ * @since 3.1.2
+ */
+interface ISurroundable
+{
+ /**
+ * @return string the id of the embedding tag of the control or the control's clientID if not surrounded
+ */
+ public function getSurroundingTagID();
+}
+
+/**
+ * TBroadcastEventParameter class
+ *
+ * TBroadcastEventParameter encapsulates the parameter data for
+ * events that are broadcasted. The name of of the event is specified via
+ * {@link setName Name} property while the event parameter is via
+ * {@link setParameter Parameter} property.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TBroadcastEventParameter extends TEventParameter
+{
+ private $_name;
+ private $_param;
+
+ /**
+ * Constructor.
+ * @param string name of the broadcast event
+ * @param mixed parameter of the broadcast event
+ */
+ public function __construct($name='',$parameter=null)
+ {
+ $this->_name=$name;
+ $this->_param=$parameter;
+ }
+
+ /**
+ * @return string name of the broadcast event
+ */
+ public function getName()
+ {
+ return $this->_name;
+ }
+
+ /**
+ * @param string name of the broadcast event
+ */
+ public function setName($value)
+ {
+ $this->_name=$value;
+ }
+
+ /**
+ * @return mixed parameter of the broadcast event
+ */
+ public function getParameter()
+ {
+ return $this->_param;
+ }
+
+ /**
+ * @param mixed parameter of the broadcast event
+ */
+ public function setParameter($value)
+ {
+ $this->_param=$value;
+ }
+}
+
+/**
+ * TCommandEventParameter class
+ *
+ * TCommandEventParameter encapsulates the parameter data for <b>Command</b>
+ * event of button controls. You can access the name of the command via
+ * {@link getCommandName CommandName} property, and the parameter carried
+ * with the command via {@link getCommandParameter CommandParameter} property.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TCommandEventParameter extends TEventParameter
+{
+ private $_name;
+ private $_param;
+
+ /**
+ * Constructor.
+ * @param string name of the command
+ * @param string parameter of the command
+ */
+ public function __construct($name='',$parameter='')
+ {
+ $this->_name=$name;
+ $this->_param=$parameter;
+ }
+
+ /**
+ * @return string name of the command
+ */
+ public function getCommandName()
+ {
+ return $this->_name;
+ }
+
+ /**
+ * @return string parameter of the command
+ */
+ public function getCommandParameter()
+ {
+ return $this->_param;
+ }
+}
+
+
+/**
+ * TCompositeLiteral class
+ *
+ * TCompositeLiteral is used internally by {@link TTemplate} for representing
+ * consecutive static strings, expressions and statements.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TCompositeLiteral extends TComponent implements IRenderable, IBindable
+{
+ const TYPE_EXPRESSION=0;
+ const TYPE_STATEMENTS=1;
+ const TYPE_DATABINDING=2;
+ private $_container=null;
+ private $_items=array();
+ private $_expressions=array();
+ private $_statements=array();
+ private $_bindings=array();
+
+ /**
+ * Constructor.
+ * @param array list of items to be represented by TCompositeLiteral
+ */
+ public function __construct($items)
+ {
+ $this->_items=array();
+ $this->_expressions=array();
+ $this->_statements=array();
+ foreach($items as $id=>$item)
+ {
+ if(is_array($item))
+ {
+ if($item[0]===self::TYPE_EXPRESSION)
+ $this->_expressions[$id]=$item[1];
+ else if($item[0]===self::TYPE_STATEMENTS)
+ $this->_statements[$id]=$item[1];
+ else if($item[0]===self::TYPE_DATABINDING)
+ $this->_bindings[$id]=$item[1];
+ $this->_items[$id]='';
+ }
+ else
+ $this->_items[$id]=$item;
+ }
+ }
+
+ /**
+ * @return TComponent container of this component. It serves as the evaluation context of expressions and statements.
+ */
+ public function getContainer()
+ {
+ return $this->_container;
+ }
+
+ /**
+ * @param TComponent container of this component. It serves as the evaluation context of expressions and statements.
+ */
+ public function setContainer(TComponent $value)
+ {
+ $this->_container=$value;
+ }
+
+ /**
+ * Evaluates the expressions and/or statements in the component.
+ */
+ public function evaluateDynamicContent()
+ {
+ $context=$this->_container===null?$this:$this->_container;
+ foreach($this->_expressions as $id=>$expression)
+ $this->_items[$id]=$context->evaluateExpression($expression);
+ foreach($this->_statements as $id=>$statement)
+ $this->_items[$id]=$context->evaluateStatements($statement);
+ }
+
+ /**
+ * Performs databindings.
+ * This method is required by {@link IBindable}
+ */
+ public function dataBind()
+ {
+ $context=$this->_container===null?$this:$this->_container;
+ foreach($this->_bindings as $id=>$binding)
+ $this->_items[$id]=$context->evaluateExpression($binding);
+ }
+
+ /**
+ * Renders the content stored in this component.
+ * This method is required by {@link IRenderable}
+ * @param ITextWriter
+ */
+ public function render($writer)
+ {
+ $writer->write(implode('',$this->_items));
+ }
+}
+
+?>
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-27 17:18:10 +0000