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+<?php
+/**
+ * TControl, TControlList, TEventParameter and INamingContainer class file
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI
+ */
+
+/**
+ * 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
+ * - naming container and containee relationship
+ * - parent and child 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.
+ *
+ * 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).
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * Each control on a page will undergo a series of lifecycles, including
+ * control construction, OnInit, OnLoad, OnPreRender, Render, and OnUnload.
+ * They work together with page lifecycles to process a page request.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TControl extends TComponent
+{
+ /**
+ * 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_INVISIBLE=0x02;
+ const IS_DISABLE_VIEWSTATE=0x04;
+ const IS_SKIN_APPLIED=0x08;
+ const IS_STYLESHEET_APPLIED=0x10;
+ const IS_DISABLE_THEMING=0x20;
+ const IS_CHILD_CREATED=0x40;
+ const IS_CREATING_CHILD=0x80;
+
+ /**
+ * Indexes for the rare fields.
+ * In order to save memory, rare fields will only be created if they are needed.
+ */
+ const RF_CONTROLS=0; // cihld 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
+
+ /**
+ * @var string control ID
+ */
+ private $_id='';
+ /**
+ * @var string control unique ID
+ */
+ private $_uid='';
+ /**
+ * @var TControl parent of the control
+ */
+ private $_parent=null;
+ /**
+ * @var TPage page that the control resides in
+ */
+ private $_page=null;
+ /**
+ * @var TControl naming container of the control
+ */
+ private $_namingContainer=null;
+ /**
+ * @var TTemplateControl control whose template contains the control
+ */
+ private $_tplControl=null;
+ /**
+ * @var TMap viewstate data
+ */
+ private $_viewState=array();
+ /**
+ * @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();
+
+
+ /**
+ * 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 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)
+ $this->_namingContainer=$this->_parent->getNamingContainer();
+ return $this->_namingContainer;
+ }
+
+ /**
+ * @return TPage the page that contains this control
+ */
+ public function getPage()
+ {
+ if(!$this->_page && $this->_parent)
+ $this->_page=$this->_parent->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 IApplication the application object that the current page is using
+ */
+ public function getApplication()
+ {
+ return Prado::getApplication();
+ }
+
+ /**
+ * 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,$id))
+ throw new TInvalidDataValueException('control_id_invalid',$id,get_class($this));
+ $this->_id=$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($this->_uid==='') // need to build the UniqueID
+ {
+ if($namingContainer=$this->getNamingContainer())
+ {
+ if($this->_page===$namingContainer)
+ return ($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 $this->_uid;
+ }
+
+ /**
+ * Returns the client ID of the control.
+ * The client ID can be used to uniquely identify
+ * the control in client-side scripts (such as JavaScript).
+ * Do not rely on the explicit format of the return ID.
+ * @return string the client ID of the control
+ */
+ public function getClientID()
+ {
+ return strtr($this->getUniqueID(),self::ID_SEPARATOR,self::CLIENT_ID_SEPARATOR);
+ }
+
+ /**
+ * @return string the skin ID of this control
+ */
+ 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),$this->getUniqueID());
+ else
+ $this->_rf[self::RF_SKIN_ID]=$value;
+ }
+
+ /**
+ * @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
+ $this->_flags |= self::IS_DISABLE_THEMING;
+ }
+
+ /**
+ * @return boolean whether the control has child controls
+ */
+ public function getHasControls()
+ {
+ return isset($this->_rf[self::RF_CONTROLS]) && $this->_rf[self::RF_CONTROLS]->getCount()>0;
+ }
+
+ /**
+ * @return TControlList the child control collection
+ */
+ public function getControls()
+ {
+ if(!isset($this->_rf[self::RF_CONTROLS]))
+ $this->_rf[self::RF_CONTROLS]=new TControlList($this);
+ return $this->_rf[self::RF_CONTROLS];
+ }
+
+ /**
+ * @param boolean whether the control is visible
+ */
+ public function setVisible($value)
+ {
+ if(TPropertyValue::ensureBoolean($value))
+ $this->_flags &= ~self::IS_INVISIBLE;
+ else
+ $this->_flags |= self::IS_INVISIBLE;
+ }
+
+ /**
+ * @return boolean whether the control is visible (default=true).
+ * A control is visible if all its parents and itself are visible.
+ */
+ public function getVisible()
+ {
+ if($this->_flags & self::IS_INVISIBLE)
+ return false;
+ else
+ return $this->_parent?$this->_parent->getVisible():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->getEnabled())
+ 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 $attributes->getCount()>0;
+ else
+ return false;
+ }
+
+ /**
+ * Returns a value indicating whether this control type can take attributes in template.
+ * This method can be overriden.
+ * Only framework developers and control developers should use this method.
+ * @return boolean whether the control allows attributes in template (default=true)
+ */
+ public function getAllowCustomAttributes()
+ {
+ return true;
+ }
+
+ /**
+ * Returns the list of custom attributes.
+ * Custom attributes are name-value pairs that may be rendered
+ * as HTML tags' attributes.
+ * @return TMap the list of custom attributes
+ */
+ public function getAttributes()
+ {
+ if($attributes=$this->getViewState('Attributes',null))
+ return $attributes;
+ else
+ {
+ $attributes=new TMap;
+ $this->setViewState('Attributes',$attributes,null);
+ return $attributes;
+ }
+ }
+
+ /**
+ * @return boolean whether viewstate is enabled
+ */
+ public function getEnableViewState()
+ {
+ return !($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;
+ }
+
+ /**
+ * 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 $key
+ */
+ protected function getViewState($key,$defaultValue=null)
+ {
+ return isset($this->_viewState[$key])?$this->_viewState[$key]:$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.
+ */
+ protected function setViewState($key,$value,$defaultValue=null)
+ {
+ if($value===$defaultValue)
+ unset($this->_viewState[$key]);
+ else
+ $this->_viewState[$key]=$value;
+ }
+
+ /**
+ * Sets up the binding between a property (or property path) and an expression.
+ * The context of the expression is the control itself.
+ * @param string the property name, or property path
+ * @param string the expression
+ */
+ public function bindProperty($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]);
+ }
+
+ /**
+ * Performs the databinding for this component.
+ * Databinding a property includes evaluating the binded expression
+ * and setting the property with the evaluation result.
+ * @param boolean whether to raise OnDataBinding event.
+ * @throws TInvalidOperationException if some bounded property is invalid
+ * @throws TExpressionInvalidException if some bounded expression is invalid
+ */
+ public function dataBind($raiseOnDataBinding=true)
+ {
+ if(isset($this->_rf[self::RF_DATA_BINDINGS]))
+ {
+ foreach($this->_rf[self::RF_DATA_BINDINGS] as $property=>$expression)
+ $this->setPropertyByPath($property,$this->evaluateExpression($expression));
+ if($raiseOnDataBinding)
+ $this->onDataBinding(null);
+ if(isset($this->_rf[self::RF_CONTROLS]))
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ if($control instanceof TControl)
+ $control->dataBind($raiseOnDataBinding);
+ }
+ }
+ }
+
+ /**
+ * @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->hasControl() && ($this->_flags & self::IS_CHILD_CREATED))
+ $this->getControls()->clear();
+ $this->_flags &= ~self::IS_CHILD_CREATED;
+ }
+ }
+
+ /**
+ * Ensures child controls are created.
+ * If child controls are not created yet, this method will invoke
+ * {@link createChildControl} to create them.
+ */
+ public function ensureChildControls()
+ {
+ if(!($this->_flags & self::IS_CHILD_CREATED) && !($this->_flags & self::IS_CREATING_CHILD))
+ {
+ try
+ {
+ $this->_flags |= self::IS_CREATING_CHILD;
+ $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 $e;
+ }
+ }
+ }
+
+ /**
+ * Creates child controls.
+ * This method can be overriden for controls who want to have their controls.
+ * Do not call this method directly. Instead, call {@link ensureChildControls}
+ * to ensure child controls are created only once.
+ */
+ protected function createChildControls()
+ {
+ }
+
+ /**
+ * Finds a control by ID path within the current naming container.
+ * The current naming container is either the control itself
+ * if it implements {@link INamingContainer} or the control's naming container.
+ * The ID path is an ID sequence separated by {@link TControl::ID_SEPARATOR}.
+ * For example, 'Repeater1:Item1:Button1' looks for a control with ID 'Button1'
+ * whose naming container is 'Item1' whose naming container is 'Repeater1'.
+ * @param string ID of the control to be looked up
+ * @return TControl|null the control found, null if not found
+ * @throws TInvalidDataValueException if a control's ID is found not unique within its naming container.
+ */
+ public function findControl($id)
+ {
+ $container=($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($sid);
+ else
+ return null;
+ }
+ }
+
+ /**
+ * Resets the control as a naming container.
+ * Only framework developers should use this method.
+ */
+ public function clearNamingContainer()
+ {
+ unset($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)
+ {
+ $this->_rf[self::RF_NAMED_OBJECTS][$name]=$object;
+ }
+
+ /**
+ * This method is invoked after the control is instantiated by a template.
+ * When this method is invoked, the control should have a valid TemplateControl
+ * and has its properties initialized according to template configurations.
+ * The control, however, has not been added to the page hierarchy yet.
+ * The default implementation of this method will invoke
+ * the potential parent control's {@link addParsedObject} to add the control as a child.
+ * This method can be overriden.
+ * @param TControl potential parent of this control
+ * @see addParsedObject
+ */
+ public function createdOnTemplate($parent)
+ {
+ $parent->addParsedObject($this);
+ }
+
+ /**
+ * Processes an object that is created during parsing template.
+ * The object can be either a control or a static text string.
+ * By default, the object will be added into the child control collection.
+ * This method can be overriden to customize the handling of newly created objects in template.
+ * 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
+ $namingContainer->clearNameTable();
+ }
+
+ if($this->_stage>=self::CS_INITIALIZED)
+ {
+ $control->initRecursive($namingContainer);
+ if($this->_stage>=self::CS_STATE_LOADED)
+ {
+ if(isset($this->_rf[self::RF_CHILD_STATE]))
+ $state=$this->_rf[self::RF_CHILD_STATE]->remove($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;
+ $control->_tplControl=null;
+ if(!($control->_flags & self::IS_ID_SET))
+ $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)
+ {
+ $this->ensureChildControls();
+ if($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()) && $page->getContainsTheme() && $this->getEnableTheming() && !($this->_flags & self::IS_SKIN_APPLIED))
+ {
+ $page->applyControlSkin($this);
+ $this->_flags |= self::IS_SKIN_APPLIED;
+ }
+ $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)
+ $this->onLoad(null);
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ if($control instanceof TControl)
+ $control->loadRecursive();
+ }
+ if($this->_stage<self::CS_LOADED)
+ $this->_stage=self::CS_LOADED;
+ }
+
+ /**
+ * Performs the PreRender step for the control and all its child controls.
+ * Only framework developers should use this method.
+ */
+ protected function preRenderRecursive()
+ {
+ if($this->getVisible())
+ {
+ $this->_flags &= ~self::IS_INVISIBLE;
+ $this->onPreRender(null);
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ if($control instanceof TControl)
+ $control->preRenderRecursive();
+ }
+ }
+ else
+ {
+ $this->_flags |= self::IS_INVISIBLE;
+ }
+ $this->_stage=self::CS_PRERENDERED;
+ }
+
+ /**
+ * Performs the Unload step for the control and all its child controls.
+ * Only framework developers should use this method.
+ */
+ protected function unloadRecursive()
+ {
+ if(!($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();
+ }
+ $this->onUnload(null);
+ }
+
+ /**
+ * This method is invoked when the control enters 'Init' stage.
+ * The method raises 'Init' event.
+ * If you override this method, be sure to call the parent implementation
+ * so that the event handlers can be invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ protected function onInit($param)
+ {
+ $this->raiseEvent('Init',$this,$param);
+ }
+
+ /**
+ * This method is invoked when the control enters 'Load' stage.
+ * The method raises 'Load' event.
+ * If you override this method, be sure to call the parent implementation
+ * so that the event handlers can be invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ protected function onLoad($param)
+ {
+ $this->raiseEvent('Load',$this,$param);
+ }
+
+ /**
+ * Raises 'DataBinding' event.
+ * This method is invoked when {@link dataBind} is invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ protected function onDataBinding($param)
+ {
+ $this->raiseEvent('DataBinding',$this,$param);
+ }
+
+
+ /**
+ * This method is invoked when the control enters 'Unload' stage.
+ * The method raises 'Unload' event.
+ * If you override this method, be sure to call the parent implementation
+ * so that the event handlers can be invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ protected function onUnload($param)
+ {
+ $this->raiseEvent('Unload',$this,$param);
+ }
+
+ /**
+ * This method is invoked when the control enters 'PreRender' stage.
+ * The method raises 'PreRender' event.
+ * If you override this method, be sure to call the parent implementation
+ * so that the event handlers can be invoked.
+ * @param TEventParameter event parameter to be passed to the event handlers
+ */
+ protected function onPreRender($param)
+ {
+ $this->raiseEvent('PreRender',$this,$param);
+ }
+
+ /**
+ * Invokes the parent's onBubbleEvent method.
+ * A control who wants to bubble an event must call this method in its onEvent method.
+ * @param TControl sender of the event
+ * @param TEventParameter event parameter
+ * @see onBubbleEvent
+ */
+ protected function raiseBubbleEvent($sender,$param)
+ {
+ $control=$this;
+ while($control=$control->_parent)
+ {
+ if($control->onBubbleEvent($sender,$param))
+ break;
+ }
+ }
+
+ /**
+ * This method responds to a bubbled event.
+ * This method should be overriden to provide customized response to a bubbled event.
+ * Check the type of event parameter to determine what event is bubbled currently.
+ * @param TControl sender of the event
+ * @param TEventParameter event parameters
+ * @return boolean true if the event bubbling is handled and no more bubbling.
+ * @see raiseBubbleEvent
+ */
+ protected function onBubbleEvent($sender,$param)
+ {
+ return false;
+ }
+
+ /**
+ * Renders the control.
+ * Only when the control is visible will the control be rendered.
+ * @param THtmlTextWriter the writer used for the rendering purpose
+ */
+ protected function renderControl($writer)
+ {
+ if(!($this->_flags & self::IS_INVISIBLE))
+ $this->render($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 THtmlTextWriter the writer used for the rendering purpose
+ */
+ protected 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 THtmlTextWriter the writer used for the rendering purpose
+ */
+ protected function renderChildren($writer)
+ {
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ $control->renderControl($writer);
+ else if(is_string($control))
+ $writer->write($control);
+ }
+ }
+ }
+
+ /**
+ * 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.
+ * @param TEventParameter event parameter
+ */
+ protected function onSaveState($param)
+ {
+ $this->setViewState('Visible',!($this->_flags & self::IS_INVISIBLE),true);
+ $this->raiseEvent('SaveState',$this,$param);
+ }
+
+ /**
+ * This method is invoked right after the control has loaded its state.
+ * You can override this method to initialize data from the control state.
+ * Parent implementation must be invoked.
+ * @param TEventParameter
+ */
+ protected function onLoadState($param)
+ {
+ $this->setVisible($this->getViewState('Visible',true));
+ $this->raiseEvent('LoadState',$this,$param);
+ }
+
+ /**
+ * Loads state (viewstate and controlstate) into a control and its children.
+ * @param TMap the collection of the state
+ * @param boolean whether the viewstate should be loaded
+ */
+ final protected function loadStateRecursive(&$state,$needViewState=true)
+ {
+ // 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 && !($this->_flags & self::IS_DISABLE_VIEWSTATE));
+ if(is_array($state))
+ {
+ 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]))
+ {
+ $s=&$state[$control->_id];
+ unset($state[$control->_id]);
+ }
+ else
+ $s=null;
+ $control->loadStateRecursive($s,$needViewState);
+ }
+ }
+ }
+ if(!empty($state))
+ $this->_rf[self::RF_CHILD_STATE]=&$state;
+ }
+ else
+ {
+ unset($this->_rf[self::RF_CONTROLSTATE]);
+ if($needViewState)
+ $this->_viewState=array();
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ $s=null;
+ if($control instanceof TControl)
+ $control->loadStateRecursive($s,$needViewState);
+ }
+ }
+ }
+ $this->onLoadState(null);
+ $this->_stage=self::CS_STATE_LOADED;
+ }
+
+ /**
+ * Saves the all control state (viewstate and controlstate) as a collection.
+ * @param boolean whether the viewstate should be saved
+ * @return TMap the collection of the control state (including its children's state).
+ */
+ final protected function &saveStateRecursive($needViewState=true)
+ {
+ $this->onSaveState(null);
+ $needViewState=($needViewState && !($this->_flags & self::IS_DISABLE_VIEWSTATE));
+ $state=array();
+ if($this->getHasControls())
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ {
+ if($control instanceof TControl)
+ {
+ $cs=&$control->saveStateRecursive($needViewState);
+ if(!empty($cs))
+ $state[$control->_id]=&$cs;
+ }
+ }
+ }
+ if($needViewState && !empty($this->_viewState))
+ $state[0]=&$this->_viewState;
+ if(isset($this->_rf[self::RF_CONTROLSTATE]) && !empty($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($this),$this->getUniqueID());
+ }
+
+ /**
+ * 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)
+ {
+ $this->_uid='';
+ if($recursive && isset($this->_rf[self::RF_CONTROLS]))
+ {
+ foreach($this->_rf[self::RF_CONTROLS] as $control)
+ if($control instanceof TControl)
+ $control->clearCachedUniqueID($recursive);
+ }
+ }
+
+ /**
+ * 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 TControlList 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][$control->_id]))
+ throw new TInvalidDataValueException('control_id_not_unique',$control->_id,get_class($control));
+ else
+ $container->_rf[self::RF_NAMED_CONTROLS][$control->_id]=$control;
+ }
+ if(!($control instanceof INamingContainer) && $control->getHasControls())
+ $this->fillNameTable($container,$control->_rf[self::RF_CONTROLS]);
+ }
+ }
+ }
+}
+
+
+/**
+ * TControlList class
+ *
+ * TControlList implements a collection that enables
+ * controls to maintain a list of their child controls.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TControlList extends TList
+{
+ /**
+ * the control that owns this collection.
+ * @var TControl
+ */
+ private $_o;
+
+ /**
+ * Constructor.
+ * @param TControl the control that owns this collection.
+ */
+ public function __construct(TControl $owner)
+ {
+ parent::__construct();
+ $this->_o=$owner;
+ }
+
+ /**
+ * @return TControl the control that owns this collection.
+ */
+ protected function getOwner()
+ {
+ return $this->_o;
+ }
+
+ /**
+ * Overrides the parent implementation with customized processing of the newly added item.
+ * @param mixed the newly added item
+ */
+ protected function addedItem($item)
+ {
+ if($item instanceof TControl)
+ $this->_o->addedControl($item);
+ }
+
+ /**
+ * Overrides the parent implementation with customized processing of the removed item.
+ * @param mixed the removed item
+ */
+ protected function removedItem($item)
+ {
+ if($item instanceof TControl)
+ $this->_o->removedControl($item);
+ }
+
+ /**
+ * Only string or instance of TControl can be added into collection.
+ * @param mixed the item to be added
+ */
+ protected function canAddItem($item)
+ {
+ return is_string($item) || ($item instanceof TControl);
+ }
+
+ /**
+ * Overrides the parent implementation by invoking {@link TControl::clearNamingContainer}
+ */
+ public function clear()
+ {
+ parent::clear();
+ if($this->_o instanceof INamingContainer)
+ $this->_o->clearNamingContainer();
+ }
+}
+
+/**
+ * INamingContainer interface.
+ * INamingContainer marks a control as a naming container.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @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 $Revision: $ $Date: $
+ * @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 $Revision: $ $Date: $
+ * @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();
+}
+
+
+/**
+ * IValidator interface
+ *
+ * If a control wants to validate user input, it must implement this interface.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @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 $Revision: $ $Date: $
+ * @package System.Web.UI
+ * @since 3.0
+ */
+interface IValidatable
+{
+ /**
+ * @return mixed the value of the property to be validated.
+ */
+ public function getValidationPropertyValue();
+}
+
+/**
+ * TCommandEventParameter class
+ *
+ * TCommandEventParameter encapsulates the parameter data for <b>OnCommand</b>
+ * event of button controls. You can access the name of the command via
+ * <b>Name</b> property, and the parameter carried with the command via
+ * <b>Parameter</b> property.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @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 getName()
+ {
+ return $this->_name;
+ }
+
+ /**
+ * @param string name of the command
+ */
+ public function setName($value)
+ {
+ $this->_name=$value;
+ }
+
+ /**
+ * @return string parameter of the command
+ */
+ public function getParameter()
+ {
+ return $this->_param;
+ }
+
+ /**
+ * @param string parameter of the command
+ */
+ public function setParameter($value)
+ {
+ $this->_param=$value;
+ }
+}
+
+?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-28 15:05:46 +0000