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-rw-r--r--framework/Web/UI/WebControls/TBulletedList.php4
-rw-r--r--framework/Web/UI/WebControls/TListControl.php1651
2 files changed, 829 insertions, 826 deletions
diff --git a/framework/Web/UI/WebControls/TBulletedList.php b/framework/Web/UI/WebControls/TBulletedList.php
index fd9c1ca2..5499a9eb 100644
--- a/framework/Web/UI/WebControls/TBulletedList.php
+++ b/framework/Web/UI/WebControls/TBulletedList.php
@@ -167,7 +167,7 @@ class TBulletedList extends TListControl implements IPostBackEventHandler
}
/**
- * @return string style of bullets. Valid values include
+ * @param string style of bullets. Valid values include
* 'NotSet','Numbered','LowerAlpha','UpperAlpha','LowerRoman','UpperRoman','Disc','Circle','Square','CustomImage'
*/
public function setBulletStyle($value)
@@ -176,7 +176,7 @@ class TBulletedList extends TListControl implements IPostBackEventHandler
}
/**
- * @param string display mode of the list. Defaults to 'Text'.
+ * @return string display mode of the list. Defaults to 'Text'.
*/
public function getDisplayMode()
{
diff --git a/framework/Web/UI/WebControls/TListControl.php b/framework/Web/UI/WebControls/TListControl.php
index 85b8d88f..a9087af5 100644
--- a/framework/Web/UI/WebControls/TListControl.php
+++ b/framework/Web/UI/WebControls/TListControl.php
@@ -1,824 +1,827 @@
-<?php
-/**
- * TListControl 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.WebControls
- */
-
-/**
- * Includes the supporting classes
- */
-Prado::using('System.Web.UI.WebControls.TDataBoundControl');
-Prado::using('System.Web.UI.WebControls.TListItem');
-Prado::using('System.Collections.TAttributeCollection');
-Prado::using('System.Util.TDataFieldAccessor');
-
-
-/**
- * TListControl class
- *
- * TListControl is a base class for list controls, such as {@link TListBox},
- * {@link TDropDownList}, {@link TCheckBoxList}, etc.
- * It manages the items and their status in a list control.
- * It also implements how the items can be populated from template and
- * data source.
- *
- * The property {@link getItems} returns a list of the items in the control.
- * To specify or determine which item is selected, use the
- * {@link getSelectedIndex SelectedIndex} property that indicates the zero-based
- * index of the selected item in the item list. You may also use
- * {@link getSelectedItem SelectedItem} and {@link getSelectedValue SelectedValue}
- * to get the selected item and its value. For multiple selection lists
- * (such as {@link TCheckBoxList} and {@link TListBox}), property
- * {@link getSelectedIndices SelectedIndices} is useful.
- *
- * TListControl implements {@link setAutoPostBack AutoPostBack} which allows
- * a list control to postback the page if the selections of the list items are changed.
- * The {@link setCausesValidation CausesValidation} and {@link setValidationGroup ValidationGroup}
- * properties may be used to specify that validation be performed when auto postback occurs.
- *
- * There are three ways to populate the items in a list control: from template,
- * using {@link setDataSource DataSource} and using {@link setDataSourceID DataSourceID}.
- * The latter two are covered in {@link TDataBoundControl}. To specify items via
- * template, using the following template syntax:
- * <code>
- * <com:TListControl>
- * <com:TListItem Value="xxx" Text="yyy" >
- * <com:TListItem Value="xxx" Text="yyy" Selected="true" >
- * <com:TListItem Value="xxx" Text="yyy" >
- * </com:TListControl>
- * </code>
- *
- * When {@link setDataSource DataSource} or {@link setDataSourceID DataSourceID}
- * is used to populate list items, the {@link setDataTextField DataTextField} and
- * {@link setDataValueField DataValueField} properties are used to specify which
- * columns of the data will be used to populate the text and value of the items.
- * For example, if a data source is as follows,
- * <code>
- * $dataSource=array(
- * array('name'=>'John', 'age'=>31),
- * array('name'=>'Cary', 'age'=>28),
- * array('name'=>'Rose', 'age'=>35),
- * );
- * </code>
- * setting {@link setDataTextField DataTextField} and {@link setDataValueField DataValueField}
- * to 'name' and 'age' will make the first item's text be 'John', value be 31,
- * the second item's text be 'Cary', value be 28, and so on.
- * The {@link setDataTextFormatString DataTextFormatString} property may be further
- * used to format how the item should be displayed. See {@link formatDataValue()}
- * for an explanation of the format string.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Revision: $ $Date: $
- * @package System.Web.UI.WebControls
- * @since 3.0
- */
-abstract class TListControl extends TDataBoundControl
-{
- /**
- * @var TListItemCollection item list
- */
- private $_items=null;
- /**
- * @var boolean whether items are restored from viewstate
- */
- private $_stateLoaded=false;
- /**
- * @var mixed the following selection variables are used
- * to keep selections when Items are not available
- */
- private $_cachedSelectedIndex=-1;
- private $_cachedSelectedValue=null;
-
- /**
- * @return string tag name of the list control
- */
- protected function getTagName()
- {
- return 'select';
- }
-
- /**
- * Adds attributes to renderer.
- * @param THtmlWriter the renderer
- */
- protected function addAttributesToRender($writer)
- {
- $page=$this->getPage();
- $page->ensureRenderInForm($this);
- if($this->getIsMultiSelect())
- $writer->addAttribute('multiple','multiple');
- if($this->getEnabled(true))
- {
- if($this->getAutoPostBack() && $page->getClientSupportsJavaScript())
- $this->renderClientControlScript($writer);
- }
- else if($this->getEnabled())
- $writer->addAttribute('disabled','disabled');
- parent::addAttributesToRender($writer);
- }
-
- /**
- * Renders the javascript for list control.
- */
- protected function renderClientControlScript($writer)
- {
- $writer->addAttribute('id',$this->getClientID());
- $this->getPage()->getClientScript()->registerPostBackControl($this->getClientClassName(),$this->getPostBackOptions());
- }
-
- /**
- * Gets the name of the javascript class responsible for performing postback for this control.
- * This method overrides the parent implementation.
- * @return string the javascript class name
- */
- abstract protected function getClientClassName();
-
- /**
- * @return array postback options for JS postback code
- */
- protected function getPostBackOptions()
- {
- $options['ID'] = $this->getClientID();
- $options['CausesValidation'] = $this->getCausesValidation();
- $options['ValidationGroup'] = $this->getValidationGroup();
- $options['EventTarget'] = $this->getUniqueID();
- return $options;
- }
-
- /**
- * Adds object parsed from template to the control.
- * This method adds only {@link TListItem} objects into the {@link getItems Items} collection.
- * All other objects are ignored.
- * @param mixed object parsed from template
- */
- public function addParsedObject($object)
- {
- // Do not add items from template if items are loaded from viewstate
- if(!$this->_stateLoaded && ($object instanceof TListItem))
- {
- $index=$this->getItems()->add($object);
- if(($this->_cachedSelectedValue!==null && $this->_cachedSelectedValue===$object->getValue()) || ($this->_cachedSelectedIndex===$index))
- {
- $object->setSelected(true);
- $this->_cachedSelectedValue=null;
- $this->_cachedSelectedIndex=-1;
- }
- }
- }
-
- /**
- * Performs databinding to populate list items from data source.
- * This method is invoked by dataBind().
- * You may override this function to provide your own way of data population.
- * @param Traversable the data
- */
- protected function performDataBinding($data)
- {
- $items=$this->getItems();
- if(!$this->getAppendDataBoundItems())
- $items->clear();
- $textField=$this->getDataTextField();
- if($textField==='')
- $textField=0;
- $valueField=$this->getDataValueField();
- if($valueField==='')
- $valueField=1;
- $textFormat=$this->getDataTextFormatString();
- foreach($data as $key=>$object)
- {
- $item=$items->createListItem();
- if(is_array($object) || is_object($object))
- {
- $text=TDataFieldAccessor::getDataFieldValue($object,$textField);
- $value=TDataFieldAccessor::getDataFieldValue($object,$valueField);
- $item->setValue($value);
- }
- else
- {
- $text=$object;
- $item->setValue("$key");
- }
- $item->setText($this->formatDataValue($textFormat,$text));
- }
- // SelectedValue or SelectedIndex may be set before databinding
- // so we make them be effective now
- if($this->_cachedSelectedValue!==null)
- {
- $index=$items->findIndexByValue($this->_cachedSelectedValue);
- if($index===-1 || ($this->_cachedSelectedIndex!==-1 && $this->_cachedSelectedIndex!==$index))
- throw new TInvalidDataValueException('listcontrol_selection_invalid',get_class($this));
- $this->setSelectedIndex($index);
- $this->_cachedSelectedValue=null;
- $this->_cachedSelectedIndex=-1;
- }
- else if($this->_cachedSelectedIndex!==-1)
- {
- $this->setSelectedIndex($this->_cachedSelectedIndex);
- $this->_cachedSelectedIndex=-1;
- }
- }
-
- /**
- * Creates a collection object to hold list items.
- * This method may be overriden to create a customized collection.
- * @return TListItemCollection the collection object
- */
- protected function createListItemCollection()
- {
- return new TListItemCollection;
- }
-
- /**
- * Saves items into viewstate.
- * This method is invoked right before control state is to be saved.
- */
- public function saveState()
- {
- parent::saveState();
- if($this->_items)
- $this->setViewState('Items',$this->_items->saveState(),null);
- else
- $this->clearViewState('Items');
- }
-
- /**
- * Loads items from viewstate.
- * This method is invoked right after control state is loaded.
- */
- public function loadState()
- {
- parent::loadState();
- $this->_stateLoaded=true;
- if(!$this->getIsDataBound())
- {
- $this->_items=$this->createListItemCollection();
- $this->_items->loadState($this->getViewState('Items',null));
- }
- $this->clearViewState('Items');
- }
-
- /**
- * @return boolean whether this is a multiselect control. Defaults to false.
- */
- protected function getIsMultiSelect()
- {
- return false;
- }
-
- /**
- * @return boolean whether performing databind should append items or clear the existing ones. Defaults to false.
- */
- public function getAppendDataBoundItems()
- {
- return $this->getViewState('AppendDataBoundItems',false);
- }
-
- /**
- * @param boolean whether performing databind should append items or clear the existing ones.
- */
- public function setAppendDataBoundItems($value)
- {
- $this->setViewState('AppendDataBoundItems',TPropertyValue::ensureBoolean($value),false);
- }
-
- /**
- * @return boolean a value indicating whether an automatic postback to the server
- * will occur whenever the user makes change to the list control and then tabs out of it.
- * Defaults to false.
- */
- public function getAutoPostBack()
- {
- return $this->getViewState('AutoPostBack',false);
- }
-
- /**
- * Sets the value indicating if postback automatically.
- * An automatic postback to the server will occur whenever the user
- * makes change to the list control and then tabs out of it.
- * @param boolean the value indicating if postback automatically
- */
- public function setAutoPostBack($value)
- {
- $this->setViewState('AutoPostBack',TPropertyValue::ensureBoolean($value),false);
- }
-
- /**
- * @return boolean whether postback event trigger by this list control will cause input validation, default is true.
- */
- public function getCausesValidation()
- {
- return $this->getViewState('CausesValidation',true);
- }
-
- /**
- * @param boolean whether postback event trigger by this list control will cause input validation.
- */
- public function setCausesValidation($value)
- {
- $this->setViewState('CausesValidation',TPropertyValue::ensureBoolean($value),true);
- }
-
- /**
- * @return string the field of the data source that provides the text content of the list items.
- */
- public function getDataTextField()
- {
- return $this->getViewState('DataTextField','');
- }
-
- /**
- * @param string the field of the data source that provides the text content of the list items.
- */
- public function setDataTextField($value)
- {
- $this->setViewState('DataTextField',$value,'');
- }
-
- /**
- * @return string the formatting string used to control how data bound to the list control is displayed.
- */
- public function getDataTextFormatString()
- {
- return $this->getViewState('DataTextFormatString','');
- }
-
- /**
- * Sets data text format string.
- * The format string is used in {@link TDataValueFormatter::format()} to format the Text property value
- * of each item in the list control.
- * @param string the formatting string used to control how data bound to the list control is displayed.
- * @see TDataValueFormatter::format()
- */
- public function setDataTextFormatString($value)
- {
- $this->setViewState('DataTextFormatString',$value,'');
- }
-
- /**
- * @return string the field of the data source that provides the value of each list item.
- */
- public function getDataValueField()
- {
- return $this->getViewState('DataValueField','');
- }
-
- /**
- * @param string the field of the data source that provides the value of each list item.
- */
- public function setDataValueField($value)
- {
- $this->setViewState('DataValueField',$value,'');
- }
-
- /**
- * @return integer the number of items in the list control
- */
- public function getItemCount()
- {
- return $this->_items?$this->_items->getCount():0;
- }
-
- /**
- * @return boolean whether the list control contains any items.
- */
- public function getHasItems()
- {
- return ($this->_items && $this->_items->getCount()>0);
- }
-
- /**
- * @return TListItemCollection the item collection
- */
- public function getItems()
- {
- if(!$this->_items)
- $this->_items=$this->createListItemCollection();
- return $this->_items;
- }
-
- /**
- * @return integer the index (zero-based) of the item being selected, -1 if no item is selected.
- */
- public function getSelectedIndex()
- {
- if($this->_items)
- {
- $n=$this->_items->getCount();
- for($i=0;$i<$n;++$i)
- if($this->_items->itemAt($i)->getSelected())
- return $i;
- }
- return -1;
- }
-
- /**
- * @param integer the index (zero-based) of the item to be selected
- */
- public function setSelectedIndex($index)
- {
- if(($index=TPropertyValue::ensureInteger($index))<0)
- $index=-1;
- if($this->_items)
- {
- $this->clearSelection();
- if($index>=0 && $index<$this->_items->getCount())
- $this->_items->itemAt($index)->setSelected(true);
- else if($index!==-1)
- throw new TInvalidDataValueException('listcontrol_selectedindex_invalid',get_class($this),$index);
- }
- $this->_cachedSelectedIndex=$index;
- }
-
- /**
- * @return array list of index of items that are selected
- */
- public function getSelectedIndices()
- {
- $selections=array();
- if($this->_items)
- {
- $n=$this->_items->getCount();
- for($i=0;$i<$n;++$i)
- if($this->_items->itemAt($i)->getSelected())
- $selections[]=$i;
- }
- return $selections;
- }
-
- /**
- * @param array list of index of items to be selected
- */
- public function setSelectedIndices($indices)
- {
- if($this->_items)
- {
- $this->clearSelection();
- $n=$this->_items->getCount();
- foreach($indices as $index)
- {
- if($index>=0 && $index<$n)
- $this->_items->itemAt($index)->setSelected(true);
- }
- }
- }
-
- /**
- * @return TListItem|null the selected item with the lowest cardinal index, null if no item is selected.
- */
- public function getSelectedItem()
- {
- if(($index=$this->getSelectedIndex())>=0)
- return $this->_items->itemAt($index);
- else
- return null;
- }
-
- /**
- * @return string the value of the selected item with the lowest cardinal index, empty if no selection
- */
- public function getSelectedValue()
- {
- $index=$this->getSelectedIndex();
- return $index>=0?$this->getItems()->itemAt($index)->getValue():'';
- }
-
- /**
- * Sets selection by item value.
- * Existing selections will be cleared if the item value is found in the item collection.
- * Note, if the value is null, existing selections will also be cleared.
- * @param string the value of the item to be selected.
- */
- public function setSelectedValue($value)
- {
- if($this->_items)
- {
- if($value===null)
- $this->clearSelection();
- else if(($item=$this->_items->findItemByValue($value))!==null)
- {
- $this->clearSelection();
- $item->setSelected(true);
- }
- else
- throw new TInvalidDataValueException('listcontrol_selectedvalue_invalid',get_class($this),$value);
- }
- $this->_cachedSelectedValue=$value;
- }
-
-
- /**
- * @return array list of the selected item values (strings)
- */
- public function getSelectedValues()
- {
- $values=array();
- if($this->_items)
- {
- foreach($this->_items as $item)
- {
- if($item->getSelected())
- $values[]=$item->getValue();
- }
- }
- return $values;
- }
-
- /**
- * @param array list of the selected item values
- */
- public function setSelectedValues($values)
- {
- if($this->_items)
- {
- $this->clearSelection();
- $lookup=array();
- foreach($this->_items as $item)
- $lookup[$item->getValue()]=$item;
- foreach($values as $value)
- {
- if(isset($lookup["$value"]))
- $lookup["$value"]->setSelected(true);
- else
- throw new TInvalidDataValueException('listcontrol_selectedvalue_invalid',get_class($this),$value);
- }
- }
- }
-
- /**
- * @return string selected value
- */
- public function getText()
- {
- return $this->getSelectedValue();
- }
-
- /**
- * @param string value to be selected
- */
- public function setText($value)
- {
- $this->setSelectedValue($value);
- }
-
- /**
- * Clears all existing selections.
- */
- public function clearSelection()
- {
- if($this->_items)
- {
- foreach($this->_items as $item)
- $item->setSelected(false);
- }
- }
-
- /**
- * @return string the group of validators which the list control causes validation upon postback
- */
- public function getValidationGroup()
- {
- return $this->getViewState('ValidationGroup','');
- }
-
- /**
- * @param string the group of validators which the list control causes validation upon postback
- */
- public function setValidationGroup($value)
- {
- $this->setViewState('ValidationGroup',$value,'');
- }
-
- /**
- * Raises OnSelectedIndexChanged event when selection is changed.
- * This method is invoked when the list control has its selection changed
- * by end-users.
- * @param TEventParameter event parameter
- */
- public function onSelectedIndexChanged($param)
- {
- $this->raiseEvent('OnSelectedIndexChanged',$this,$param);
- $this->onTextChanged($param);
- }
-
- /**
- * Raises OnTextChanged event when selection is changed.
- * This method is invoked when the list control has its selection changed
- * by end-users.
- * @param TEventParameter event parameter
- */
- public function onTextChanged($param)
- {
- $this->raiseEvent('OnTextChanged',$this,$param);
- }
-
- /**
- * Renders body content of the list control.
- * This method renders items contained in the list control as the body content.
- * @param THtmlWriter writer
- */
- public function renderContents($writer)
- {
- if($this->_items)
- {
- $writer->writeLine();
- foreach($this->_items as $item)
- {
- if($item->getEnabled())
- {
- if($item->getSelected())
- $writer->addAttribute('selected','selected');
- $writer->addAttribute('value',$item->getValue());
- if($item->getHasAttributes())
- {
- foreach($item->getAttributes() as $name=>$value)
- $writer->addAttribute($name,$value);
- }
- $writer->renderBeginTag('option');
- $writer->write(THttpUtility::htmlEncode($item->getText()));
- $writer->renderEndTag();
- $writer->writeLine();
- }
- }
- }
- }
-
- /**
- * Formats the text value according to a format string.
- * If the format string is empty, the original value is converted into
- * a string and returned.
- * If the format string starts with '#', the string is treated as a PHP expression
- * within which the token '{0}' is translated with the data value to be formated.
- * Otherwise, the format string and the data value are passed
- * as the first and second parameters in {@link sprintf}.
- * @param string format string
- * @param mixed the data to be formatted
- * @return string the formatted result
- */
- protected function formatDataValue($formatString,$value)
- {
- if($formatString==='')
- return TPropertyValue::ensureString($value);
- else if($formatString[0]==='#')
- {
- $expression=strtr(substr($formatString,1),array('{0}'=>'$value'));
- try
- {
- if(eval("\$result=$expression;")===false)
- throw new Exception('');
- return $result;
- }
- catch(Exception $e)
- {
- throw new TInvalidDataValueException('listcontrol_expression_invalid',get_class($this),$expression,$e->getMessage());
- }
- }
- else
- return sprintf($formatString,$value);
- }
-}
-
-/**
- * TListItemCollection class.
- *
- * TListItemCollection maintains a list of {@link TListItem} for {@link TListControl}.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Revision: $ $Date: $
- * @package System.Web.UI.WebControls
- * @since 3.0
- */
-class TListItemCollection extends TList
-{
- /**
- * Creates a list item object.
- * This method may be overriden to provide a customized list item object.
- * @param integer index where the newly created item is to be inserted at.
- * If -1, the item will be appended to the end.
- * @return TListItem list item object
- */
- public function createListItem($index=-1)
- {
- $item=new TListItem;
- if($index<0)
- $this->add($item);
- else
- $this->insertAt($index,$item);
- return $item;
- }
-
- /**
- * Inserts an item into the collection.
- * @param integer the location where the item will be inserted.
- * The current item at the place and the following ones will be moved backward.
- * @param TListItem the item to be inserted.
- * @throws TInvalidDataTypeException if the item being inserted is neither a string nor TListItem
- */
- public function insertAt($index,$item)
- {
- if($item instanceof TListItem)
- parent::insertAt($index,$item);
- else if(is_string($item))
- {
- $item=$this->createListItem($index);
- $item->setText($item);
- }
- else
- throw new TInvalidDataTypeException('listitemcollection_item_invalid',get_class($this));
- }
-
- /**
- * Finds the lowest cardinal index of the item whose value is the one being looked for.
- * @param string the value to be looked for
- * @param boolean whether to look for disabled items also
- * @return integer the index of the item found, -1 if not found.
- */
- public function findIndexByValue($value,$includeDisabled=true)
- {
- $value=TPropertyValue::ensureString($value);
- $index=0;
- foreach($this as $item)
- {
- if($item->getValue()===$value && ($includeDisabled || $item->getEnabled()))
- return $index;
- $index++;
- }
- return -1;
- }
-
- /**
- * Finds the lowest cardinal index of the item whose text is the one being looked for.
- * @param string the text to be looked for
- * @param boolean whether to look for disabled items also
- * @return integer the index of the item found, -1 if not found.
- */
- public function findIndexByText($text,$includeDisabled=true)
- {
- $text=TPropertyValue::ensureString($text);
- $index=0;
- foreach($this as $item)
- {
- if($item->getText()===$text && ($includeDisabled || $item->getEnabled()))
- return $index;
- $index++;
- }
- return -1;
- }
-
- /**
- * Finds the item whose value is the one being looked for.
- * @param string the value to be looked for
- * @param boolean whether to look for disabled items also
- * @return TListItem the item found, null if not found.
- */
- public function findItemByValue($value,$includeDisabled=true)
- {
- if(($index=$this->findIndexByValue($value,$includeDisabled))>=0)
- return $this->itemAt($index);
- else
- return null;
- }
-
- /**
- * Finds the item whose text is the one being looked for.
- * @param string the text to be looked for
- * @param boolean whether to look for disabled items also
- * @return TListItem the item found, null if not found.
- */
- public function findItemByText($text,$includeDisabled=true)
- {
- if(($index=$this->findIndexByText($text,$includeDisabled))>=0)
- return $this->itemAt($index);
- else
- return null;
- }
-
- /**
- * Loads state into every item in the collection.
- * This method should only be used by framework and control developers.
- * @param array|null state to be loaded.
- */
- public function loadState($state)
- {
- $this->clear();
- if($state!==null)
- $this->copyFrom($state);
- }
-
- /**
- * Saves state of items.
- * This method should only be used by framework and control developers.
- * @return array|null the saved state
- */
- public function saveState()
- {
- return ($this->getCount()>0) ? $this->toArray() : null;
- }
-}
-
-?>
+<?php
+/**
+ * TListControl 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.WebControls
+ */
+
+/**
+ * Includes the supporting classes
+ */
+Prado::using('System.Web.UI.WebControls.TDataBoundControl');
+Prado::using('System.Web.UI.WebControls.TListItem');
+Prado::using('System.Collections.TAttributeCollection');
+Prado::using('System.Util.TDataFieldAccessor');
+
+
+/**
+ * TListControl class
+ *
+ * TListControl is a base class for list controls, such as {@link TListBox},
+ * {@link TDropDownList}, {@link TCheckBoxList}, etc.
+ * It manages the items and their status in a list control.
+ * It also implements how the items can be populated from template and
+ * data source.
+ *
+ * The property {@link getItems} returns a list of the items in the control.
+ * To specify or determine which item is selected, use the
+ * {@link getSelectedIndex SelectedIndex} property that indicates the zero-based
+ * index of the selected item in the item list. You may also use
+ * {@link getSelectedItem SelectedItem} and {@link getSelectedValue SelectedValue}
+ * to get the selected item and its value. For multiple selection lists
+ * (such as {@link TCheckBoxList} and {@link TListBox}), property
+ * {@link getSelectedIndices SelectedIndices} is useful.
+ *
+ * TListControl implements {@link setAutoPostBack AutoPostBack} which allows
+ * a list control to postback the page if the selections of the list items are changed.
+ * The {@link setCausesValidation CausesValidation} and {@link setValidationGroup ValidationGroup}
+ * properties may be used to specify that validation be performed when auto postback occurs.
+ *
+ * There are three ways to populate the items in a list control: from template,
+ * using {@link setDataSource DataSource} and using {@link setDataSourceID DataSourceID}.
+ * The latter two are covered in {@link TDataBoundControl}. To specify items via
+ * template, using the following template syntax:
+ * <code>
+ * <com:TListControl>
+ * <com:TListItem Value="xxx" Text="yyy" >
+ * <com:TListItem Value="xxx" Text="yyy" Selected="true" >
+ * <com:TListItem Value="xxx" Text="yyy" >
+ * </com:TListControl>
+ * </code>
+ *
+ * When {@link setDataSource DataSource} or {@link setDataSourceID DataSourceID}
+ * is used to populate list items, the {@link setDataTextField DataTextField} and
+ * {@link setDataValueField DataValueField} properties are used to specify which
+ * columns of the data will be used to populate the text and value of the items.
+ * For example, if a data source is as follows,
+ * <code>
+ * $dataSource=array(
+ * array('name'=>'John', 'age'=>31),
+ * array('name'=>'Cary', 'age'=>28),
+ * array('name'=>'Rose', 'age'=>35),
+ * );
+ * </code>
+ * setting {@link setDataTextField DataTextField} and {@link setDataValueField DataValueField}
+ * to 'name' and 'age' will make the first item's text be 'John', value be 31,
+ * the second item's text be 'Cary', value be 28, and so on.
+ * The {@link setDataTextFormatString DataTextFormatString} property may be further
+ * used to format how the item should be displayed. See {@link formatDataValue()}
+ * for an explanation of the format string.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI.WebControls
+ * @since 3.0
+ */
+abstract class TListControl extends TDataBoundControl
+{
+ /**
+ * @var TListItemCollection item list
+ */
+ private $_items=null;
+ /**
+ * @var boolean whether items are restored from viewstate
+ */
+ private $_stateLoaded=false;
+ /**
+ * @var mixed the following selection variables are used
+ * to keep selections when Items are not available
+ */
+ private $_cachedSelectedIndex=-1;
+ private $_cachedSelectedValue=null;
+
+ /**
+ * @return string tag name of the list control
+ */
+ protected function getTagName()
+ {
+ return 'select';
+ }
+
+ /**
+ * Adds attributes to renderer.
+ * @param THtmlWriter the renderer
+ */
+ protected function addAttributesToRender($writer)
+ {
+ $page=$this->getPage();
+ $page->ensureRenderInForm($this);
+ if($this->getIsMultiSelect())
+ $writer->addAttribute('multiple','multiple');
+ if($this->getEnabled(true))
+ {
+ if($this->getAutoPostBack() && $page->getClientSupportsJavaScript())
+ $this->renderClientControlScript($writer);
+ }
+ else if($this->getEnabled())
+ $writer->addAttribute('disabled','disabled');
+ parent::addAttributesToRender($writer);
+ }
+
+ /**
+ * Renders the javascript for list control.
+ */
+ protected function renderClientControlScript($writer)
+ {
+ $writer->addAttribute('id',$this->getClientID());
+ $this->getPage()->getClientScript()->registerPostBackControl($this->getClientClassName(),$this->getPostBackOptions());
+ }
+
+ /**
+ * Gets the name of the javascript class responsible for performing postback for this control.
+ * Derived classes may override this method and return customized js class names.
+ * @return string the javascript class name
+ */
+ protected function getClientClassName()
+ {
+ return 'Prado.WebUI.TListControl';
+ }
+
+ /**
+ * @return array postback options for JS postback code
+ */
+ protected function getPostBackOptions()
+ {
+ $options['ID'] = $this->getClientID();
+ $options['CausesValidation'] = $this->getCausesValidation();
+ $options['ValidationGroup'] = $this->getValidationGroup();
+ $options['EventTarget'] = $this->getUniqueID();
+ return $options;
+ }
+
+ /**
+ * Adds object parsed from template to the control.
+ * This method adds only {@link TListItem} objects into the {@link getItems Items} collection.
+ * All other objects are ignored.
+ * @param mixed object parsed from template
+ */
+ public function addParsedObject($object)
+ {
+ // Do not add items from template if items are loaded from viewstate
+ if(!$this->_stateLoaded && ($object instanceof TListItem))
+ {
+ $index=$this->getItems()->add($object);
+ if(($this->_cachedSelectedValue!==null && $this->_cachedSelectedValue===$object->getValue()) || ($this->_cachedSelectedIndex===$index))
+ {
+ $object->setSelected(true);
+ $this->_cachedSelectedValue=null;
+ $this->_cachedSelectedIndex=-1;
+ }
+ }
+ }
+
+ /**
+ * Performs databinding to populate list items from data source.
+ * This method is invoked by dataBind().
+ * You may override this function to provide your own way of data population.
+ * @param Traversable the data
+ */
+ protected function performDataBinding($data)
+ {
+ $items=$this->getItems();
+ if(!$this->getAppendDataBoundItems())
+ $items->clear();
+ $textField=$this->getDataTextField();
+ if($textField==='')
+ $textField=0;
+ $valueField=$this->getDataValueField();
+ if($valueField==='')
+ $valueField=1;
+ $textFormat=$this->getDataTextFormatString();
+ foreach($data as $key=>$object)
+ {
+ $item=$items->createListItem();
+ if(is_array($object) || is_object($object))
+ {
+ $text=TDataFieldAccessor::getDataFieldValue($object,$textField);
+ $value=TDataFieldAccessor::getDataFieldValue($object,$valueField);
+ $item->setValue($value);
+ }
+ else
+ {
+ $text=$object;
+ $item->setValue("$key");
+ }
+ $item->setText($this->formatDataValue($textFormat,$text));
+ }
+ // SelectedValue or SelectedIndex may be set before databinding
+ // so we make them be effective now
+ if($this->_cachedSelectedValue!==null)
+ {
+ $index=$items->findIndexByValue($this->_cachedSelectedValue);
+ if($index===-1 || ($this->_cachedSelectedIndex!==-1 && $this->_cachedSelectedIndex!==$index))
+ throw new TInvalidDataValueException('listcontrol_selection_invalid',get_class($this));
+ $this->setSelectedIndex($index);
+ $this->_cachedSelectedValue=null;
+ $this->_cachedSelectedIndex=-1;
+ }
+ else if($this->_cachedSelectedIndex!==-1)
+ {
+ $this->setSelectedIndex($this->_cachedSelectedIndex);
+ $this->_cachedSelectedIndex=-1;
+ }
+ }
+
+ /**
+ * Creates a collection object to hold list items.
+ * This method may be overriden to create a customized collection.
+ * @return TListItemCollection the collection object
+ */
+ protected function createListItemCollection()
+ {
+ return new TListItemCollection;
+ }
+
+ /**
+ * Saves items into viewstate.
+ * This method is invoked right before control state is to be saved.
+ */
+ public function saveState()
+ {
+ parent::saveState();
+ if($this->_items)
+ $this->setViewState('Items',$this->_items->saveState(),null);
+ else
+ $this->clearViewState('Items');
+ }
+
+ /**
+ * Loads items from viewstate.
+ * This method is invoked right after control state is loaded.
+ */
+ public function loadState()
+ {
+ parent::loadState();
+ $this->_stateLoaded=true;
+ if(!$this->getIsDataBound())
+ {
+ $this->_items=$this->createListItemCollection();
+ $this->_items->loadState($this->getViewState('Items',null));
+ }
+ $this->clearViewState('Items');
+ }
+
+ /**
+ * @return boolean whether this is a multiselect control. Defaults to false.
+ */
+ protected function getIsMultiSelect()
+ {
+ return false;
+ }
+
+ /**
+ * @return boolean whether performing databind should append items or clear the existing ones. Defaults to false.
+ */
+ public function getAppendDataBoundItems()
+ {
+ return $this->getViewState('AppendDataBoundItems',false);
+ }
+
+ /**
+ * @param boolean whether performing databind should append items or clear the existing ones.
+ */
+ public function setAppendDataBoundItems($value)
+ {
+ $this->setViewState('AppendDataBoundItems',TPropertyValue::ensureBoolean($value),false);
+ }
+
+ /**
+ * @return boolean a value indicating whether an automatic postback to the server
+ * will occur whenever the user makes change to the list control and then tabs out of it.
+ * Defaults to false.
+ */
+ public function getAutoPostBack()
+ {
+ return $this->getViewState('AutoPostBack',false);
+ }
+
+ /**
+ * Sets the value indicating if postback automatically.
+ * An automatic postback to the server will occur whenever the user
+ * makes change to the list control and then tabs out of it.
+ * @param boolean the value indicating if postback automatically
+ */
+ public function setAutoPostBack($value)
+ {
+ $this->setViewState('AutoPostBack',TPropertyValue::ensureBoolean($value),false);
+ }
+
+ /**
+ * @return boolean whether postback event trigger by this list control will cause input validation, default is true.
+ */
+ public function getCausesValidation()
+ {
+ return $this->getViewState('CausesValidation',true);
+ }
+
+ /**
+ * @param boolean whether postback event trigger by this list control will cause input validation.
+ */
+ public function setCausesValidation($value)
+ {
+ $this->setViewState('CausesValidation',TPropertyValue::ensureBoolean($value),true);
+ }
+
+ /**
+ * @return string the field of the data source that provides the text content of the list items.
+ */
+ public function getDataTextField()
+ {
+ return $this->getViewState('DataTextField','');
+ }
+
+ /**
+ * @param string the field of the data source that provides the text content of the list items.
+ */
+ public function setDataTextField($value)
+ {
+ $this->setViewState('DataTextField',$value,'');
+ }
+
+ /**
+ * @return string the formatting string used to control how data bound to the list control is displayed.
+ */
+ public function getDataTextFormatString()
+ {
+ return $this->getViewState('DataTextFormatString','');
+ }
+
+ /**
+ * Sets data text format string.
+ * The format string is used in {@link TDataValueFormatter::format()} to format the Text property value
+ * of each item in the list control.
+ * @param string the formatting string used to control how data bound to the list control is displayed.
+ * @see TDataValueFormatter::format()
+ */
+ public function setDataTextFormatString($value)
+ {
+ $this->setViewState('DataTextFormatString',$value,'');
+ }
+
+ /**
+ * @return string the field of the data source that provides the value of each list item.
+ */
+ public function getDataValueField()
+ {
+ return $this->getViewState('DataValueField','');
+ }
+
+ /**
+ * @param string the field of the data source that provides the value of each list item.
+ */
+ public function setDataValueField($value)
+ {
+ $this->setViewState('DataValueField',$value,'');
+ }
+
+ /**
+ * @return integer the number of items in the list control
+ */
+ public function getItemCount()
+ {
+ return $this->_items?$this->_items->getCount():0;
+ }
+
+ /**
+ * @return boolean whether the list control contains any items.
+ */
+ public function getHasItems()
+ {
+ return ($this->_items && $this->_items->getCount()>0);
+ }
+
+ /**
+ * @return TListItemCollection the item collection
+ */
+ public function getItems()
+ {
+ if(!$this->_items)
+ $this->_items=$this->createListItemCollection();
+ return $this->_items;
+ }
+
+ /**
+ * @return integer the index (zero-based) of the item being selected, -1 if no item is selected.
+ */
+ public function getSelectedIndex()
+ {
+ if($this->_items)
+ {
+ $n=$this->_items->getCount();
+ for($i=0;$i<$n;++$i)
+ if($this->_items->itemAt($i)->getSelected())
+ return $i;
+ }
+ return -1;
+ }
+
+ /**
+ * @param integer the index (zero-based) of the item to be selected
+ */
+ public function setSelectedIndex($index)
+ {
+ if(($index=TPropertyValue::ensureInteger($index))<0)
+ $index=-1;
+ if($this->_items)
+ {
+ $this->clearSelection();
+ if($index>=0 && $index<$this->_items->getCount())
+ $this->_items->itemAt($index)->setSelected(true);
+ else if($index!==-1)
+ throw new TInvalidDataValueException('listcontrol_selectedindex_invalid',get_class($this),$index);
+ }
+ $this->_cachedSelectedIndex=$index;
+ }
+
+ /**
+ * @return array list of index of items that are selected
+ */
+ public function getSelectedIndices()
+ {
+ $selections=array();
+ if($this->_items)
+ {
+ $n=$this->_items->getCount();
+ for($i=0;$i<$n;++$i)
+ if($this->_items->itemAt($i)->getSelected())
+ $selections[]=$i;
+ }
+ return $selections;
+ }
+
+ /**
+ * @param array list of index of items to be selected
+ */
+ public function setSelectedIndices($indices)
+ {
+ if($this->_items)
+ {
+ $this->clearSelection();
+ $n=$this->_items->getCount();
+ foreach($indices as $index)
+ {
+ if($index>=0 && $index<$n)
+ $this->_items->itemAt($index)->setSelected(true);
+ }
+ }
+ }
+
+ /**
+ * @return TListItem|null the selected item with the lowest cardinal index, null if no item is selected.
+ */
+ public function getSelectedItem()
+ {
+ if(($index=$this->getSelectedIndex())>=0)
+ return $this->_items->itemAt($index);
+ else
+ return null;
+ }
+
+ /**
+ * @return string the value of the selected item with the lowest cardinal index, empty if no selection
+ */
+ public function getSelectedValue()
+ {
+ $index=$this->getSelectedIndex();
+ return $index>=0?$this->getItems()->itemAt($index)->getValue():'';
+ }
+
+ /**
+ * Sets selection by item value.
+ * Existing selections will be cleared if the item value is found in the item collection.
+ * Note, if the value is null, existing selections will also be cleared.
+ * @param string the value of the item to be selected.
+ */
+ public function setSelectedValue($value)
+ {
+ if($this->_items)
+ {
+ if($value===null)
+ $this->clearSelection();
+ else if(($item=$this->_items->findItemByValue($value))!==null)
+ {
+ $this->clearSelection();
+ $item->setSelected(true);
+ }
+ else
+ throw new TInvalidDataValueException('listcontrol_selectedvalue_invalid',get_class($this),$value);
+ }
+ $this->_cachedSelectedValue=$value;
+ }
+
+
+ /**
+ * @return array list of the selected item values (strings)
+ */
+ public function getSelectedValues()
+ {
+ $values=array();
+ if($this->_items)
+ {
+ foreach($this->_items as $item)
+ {
+ if($item->getSelected())
+ $values[]=$item->getValue();
+ }
+ }
+ return $values;
+ }
+
+ /**
+ * @param array list of the selected item values
+ */
+ public function setSelectedValues($values)
+ {
+ if($this->_items)
+ {
+ $this->clearSelection();
+ $lookup=array();
+ foreach($this->_items as $item)
+ $lookup[$item->getValue()]=$item;
+ foreach($values as $value)
+ {
+ if(isset($lookup["$value"]))
+ $lookup["$value"]->setSelected(true);
+ else
+ throw new TInvalidDataValueException('listcontrol_selectedvalue_invalid',get_class($this),$value);
+ }
+ }
+ }
+
+ /**
+ * @return string selected value
+ */
+ public function getText()
+ {
+ return $this->getSelectedValue();
+ }
+
+ /**
+ * @param string value to be selected
+ */
+ public function setText($value)
+ {
+ $this->setSelectedValue($value);
+ }
+
+ /**
+ * Clears all existing selections.
+ */
+ public function clearSelection()
+ {
+ if($this->_items)
+ {
+ foreach($this->_items as $item)
+ $item->setSelected(false);
+ }
+ }
+
+ /**
+ * @return string the group of validators which the list control causes validation upon postback
+ */
+ public function getValidationGroup()
+ {
+ return $this->getViewState('ValidationGroup','');
+ }
+
+ /**
+ * @param string the group of validators which the list control causes validation upon postback
+ */
+ public function setValidationGroup($value)
+ {
+ $this->setViewState('ValidationGroup',$value,'');
+ }
+
+ /**
+ * Raises OnSelectedIndexChanged event when selection is changed.
+ * This method is invoked when the list control has its selection changed
+ * by end-users.
+ * @param TEventParameter event parameter
+ */
+ public function onSelectedIndexChanged($param)
+ {
+ $this->raiseEvent('OnSelectedIndexChanged',$this,$param);
+ $this->onTextChanged($param);
+ }
+
+ /**
+ * Raises OnTextChanged event when selection is changed.
+ * This method is invoked when the list control has its selection changed
+ * by end-users.
+ * @param TEventParameter event parameter
+ */
+ public function onTextChanged($param)
+ {
+ $this->raiseEvent('OnTextChanged',$this,$param);
+ }
+
+ /**
+ * Renders body content of the list control.
+ * This method renders items contained in the list control as the body content.
+ * @param THtmlWriter writer
+ */
+ public function renderContents($writer)
+ {
+ if($this->_items)
+ {
+ $writer->writeLine();
+ foreach($this->_items as $item)
+ {
+ if($item->getEnabled())
+ {
+ if($item->getSelected())
+ $writer->addAttribute('selected','selected');
+ $writer->addAttribute('value',$item->getValue());
+ if($item->getHasAttributes())
+ {
+ foreach($item->getAttributes() as $name=>$value)
+ $writer->addAttribute($name,$value);
+ }
+ $writer->renderBeginTag('option');
+ $writer->write(THttpUtility::htmlEncode($item->getText()));
+ $writer->renderEndTag();
+ $writer->writeLine();
+ }
+ }
+ }
+ }
+
+ /**
+ * Formats the text value according to a format string.
+ * If the format string is empty, the original value is converted into
+ * a string and returned.
+ * If the format string starts with '#', the string is treated as a PHP expression
+ * within which the token '{0}' is translated with the data value to be formated.
+ * Otherwise, the format string and the data value are passed
+ * as the first and second parameters in {@link sprintf}.
+ * @param string format string
+ * @param mixed the data to be formatted
+ * @return string the formatted result
+ */
+ protected function formatDataValue($formatString,$value)
+ {
+ if($formatString==='')
+ return TPropertyValue::ensureString($value);
+ else if($formatString[0]==='#')
+ {
+ $expression=strtr(substr($formatString,1),array('{0}'=>'$value'));
+ try
+ {
+ if(eval("\$result=$expression;")===false)
+ throw new Exception('');
+ return $result;
+ }
+ catch(Exception $e)
+ {
+ throw new TInvalidDataValueException('listcontrol_expression_invalid',get_class($this),$expression,$e->getMessage());
+ }
+ }
+ else
+ return sprintf($formatString,$value);
+ }
+}
+
+/**
+ * TListItemCollection class.
+ *
+ * TListItemCollection maintains a list of {@link TListItem} for {@link TListControl}.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $ $Date: $
+ * @package System.Web.UI.WebControls
+ * @since 3.0
+ */
+class TListItemCollection extends TList
+{
+ /**
+ * Creates a list item object.
+ * This method may be overriden to provide a customized list item object.
+ * @param integer index where the newly created item is to be inserted at.
+ * If -1, the item will be appended to the end.
+ * @return TListItem list item object
+ */
+ public function createListItem($index=-1)
+ {
+ $item=new TListItem;
+ if($index<0)
+ $this->add($item);
+ else
+ $this->insertAt($index,$item);
+ return $item;
+ }
+
+ /**
+ * Inserts an item into the collection.
+ * @param integer the location where the item will be inserted.
+ * The current item at the place and the following ones will be moved backward.
+ * @param TListItem the item to be inserted.
+ * @throws TInvalidDataTypeException if the item being inserted is neither a string nor TListItem
+ */
+ public function insertAt($index,$item)
+ {
+ if($item instanceof TListItem)
+ parent::insertAt($index,$item);
+ else if(is_string($item))
+ {
+ $item=$this->createListItem($index);
+ $item->setText($item);
+ }
+ else
+ throw new TInvalidDataTypeException('listitemcollection_item_invalid',get_class($this));
+ }
+
+ /**
+ * Finds the lowest cardinal index of the item whose value is the one being looked for.
+ * @param string the value to be looked for
+ * @param boolean whether to look for disabled items also
+ * @return integer the index of the item found, -1 if not found.
+ */
+ public function findIndexByValue($value,$includeDisabled=true)
+ {
+ $value=TPropertyValue::ensureString($value);
+ $index=0;
+ foreach($this as $item)
+ {
+ if($item->getValue()===$value && ($includeDisabled || $item->getEnabled()))
+ return $index;
+ $index++;
+ }
+ return -1;
+ }
+
+ /**
+ * Finds the lowest cardinal index of the item whose text is the one being looked for.
+ * @param string the text to be looked for
+ * @param boolean whether to look for disabled items also
+ * @return integer the index of the item found, -1 if not found.
+ */
+ public function findIndexByText($text,$includeDisabled=true)
+ {
+ $text=TPropertyValue::ensureString($text);
+ $index=0;
+ foreach($this as $item)
+ {
+ if($item->getText()===$text && ($includeDisabled || $item->getEnabled()))
+ return $index;
+ $index++;
+ }
+ return -1;
+ }
+
+ /**
+ * Finds the item whose value is the one being looked for.
+ * @param string the value to be looked for
+ * @param boolean whether to look for disabled items also
+ * @return TListItem the item found, null if not found.
+ */
+ public function findItemByValue($value,$includeDisabled=true)
+ {
+ if(($index=$this->findIndexByValue($value,$includeDisabled))>=0)
+ return $this->itemAt($index);
+ else
+ return null;
+ }
+
+ /**
+ * Finds the item whose text is the one being looked for.
+ * @param string the text to be looked for
+ * @param boolean whether to look for disabled items also
+ * @return TListItem the item found, null if not found.
+ */
+ public function findItemByText($text,$includeDisabled=true)
+ {
+ if(($index=$this->findIndexByText($text,$includeDisabled))>=0)
+ return $this->itemAt($index);
+ else
+ return null;
+ }
+
+ /**
+ * Loads state into every item in the collection.
+ * This method should only be used by framework and control developers.
+ * @param array|null state to be loaded.
+ */
+ public function loadState($state)
+ {
+ $this->clear();
+ if($state!==null)
+ $this->copyFrom($state);
+ }
+
+ /**
+ * Saves state of items.
+ * This method should only be used by framework and control developers.
+ * @return array|null the saved state
+ */
+ public function saveState()
+ {
+ return ($this->getCount()>0) ? $this->toArray() : null;
+ }
+}
+
+?>
generated by cgit v1.2.3 (git 2.51.0) at 2025-11-04 09:17:50 +0000