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<?php
/**
* TJuiDroppable class file.
*
* @author Fabio Bas <ctrlaltca[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2013-2014 PradoSoft
* @license http://www.pradosoft.com/license/
* @package System.Web.UI.JuiControls
*/
Prado::using('System.Web.UI.JuiControls.TJuiControlAdapter');
Prado::using('System.Web.UI.ActiveControls.TActivePanel');
/**
* TJuiDroppable class.
*
* <code>
* <com:TJuiDraggable
* ID="drag1"
* Style="border: 1px solid red; width:100px;height:100px;background-color: #fff"
* >
* drag me
* </com:TJuiDraggable>
*
* <com:TJuiDroppable
* ID="drop1"
* Style="border: 1px solid blue; width:600px;height:600px; background-color: lime"
* OnDrop="drop1_ondrop"
* >
* drop it over me
* </com:TJuiDroppable>
* </code>
*
* <code>
* public function drop1_ondrop($sender, $param)
* {
* $draggable=$param->getDroppedControl()->ID;
* $this->drop1->Controls->clear();
* $this->drop1->Controls->add("Dropped ".$draggable." at: <br/>Top=".$param->getOffsetTop()." Left=".$param->getOffsetLeft());
* // it's still an active panel, after all
* $this->drop1->render($param->NewWriter);
* }
* </code>
*
* @author Fabio Bas <ctrlaltca[at]gmail[dot]com>
* @package System.Web.UI.JuiControls
* @since 3.3
*/
class TJuiDroppable extends TActivePanel implements IJuiOptions, ICallbackEventHandler
{
/**
* Creates a new callback control, sets the adapter to
* TActiveControlAdapter. If you override this class, be sure to set the
* adapter appropriately by, for example, by calling this constructor.
*/
public function __construct()
{
parent::__construct();
$this->setAdapter(new TJuiControlAdapter($this));
}
/**
* Object containing defined javascript options
* @return TJuiControlOptions
*/
public function getOptions()
{
static $options;
if($options===null)
$options=new TJuiControlOptions($this);
return $options;
}
/**
* Array containing valid javascript options
* @return array()
*/
public function getValidOptions()
{
return array('addClasses', 'appendTo', 'axis', 'cancel', 'connectToSortable', 'containment', 'cursor', 'cursorAt', 'delay', 'disabled', 'distance', 'grid', 'handle', 'helper', 'iframeFix', 'opacity', 'refreshPositions', 'revert', 'revertDuration', 'scope', 'scroll', 'scrollSensitivity', 'scrollSpeed', 'snap', 'snapMode', 'snapTolerance', 'stack', 'zIndex');
}
/**
* @return array list of callback options.
*/
protected function getPostBackOptions()
{
$options = $this->getOptions()->toArray();
$options['drop'] = new TJavaScriptLiteral("function( event, ui ) { Prado.Callback(".TJavascript::encode($this->getUniqueID()).", { 'offset' : { 'left' : ui.offset.left - $(this).offset().left, 'top' : ui.offset.top - $(this).offset().top }, 'position' : ui.position, 'draggable' : ui.draggable.get(0).id }) }");
return $options;
}
/**
* Raises callback event. This method is required bu {@link ICallbackEventHandler}
* interface.
* It raises the {@link onDrop OnDrop} event, then, the {@link onCallback OnCallback} event
* This method is mainly used by framework and control developers.
* @param TCallbackEventParameter the parameter associated with the callback event
*/
public function raiseCallbackEvent($param)
{
$this->onDrop($param->getCallbackParameter());
$this->onCallback($param);
}
/**
* Raises the onDrop event.
* The drop parameters are encapsulated into a {@link TJuiDroppableEventParameter}
*
* @param object $dropControlId
*/
public function onDrop ($dropParams)
{
$this->raiseEvent('OnDrop', $this, new TJuiDroppableEventParameter ($this->getResponse(), $dropParams));
}
/**
* This method is invoked when a callback is requested. The method raises
* 'OnCallback' event to fire up the event handlers. If you override this
* method, be sure to call the parent implementation so that the event
* handler can be invoked.
* @param TCallbackEventParameter event parameter to be passed to the event handlers
*/
public function onCallback($param)
{
$this->raiseEvent('OnCallback', $this, $param);
}
/**
* Ensure that the ID attribute is rendered and registers the javascript code
* for initializing the active control.
*/
protected function addAttributesToRender($writer)
{
parent::addAttributesToRender($writer);
$writer->addAttribute('id',$this->getClientID());
$options=TJavascript::encode($this->getPostBackOptions());
$cs=$this->getPage()->getClientScript();
$code="jQuery('#".$this->getClientId()."').droppable(".$options.");";
$cs->registerEndScript(sprintf('%08X', crc32($code)), $code);
}
}
/**
* TJuiDroppableEventParameter class
*
* TJuiDroppableEventParameter encapsulate the parameter
* data for <b>OnDrop</b> event of TJuiDroppable components
*
* @author Fabio Bas <ctrlaltca[at]gmail[dot]com>
* @license http://www.pradosoft.com/license
* @package System.Web.UI.JuiControls
*/
class TJuiDroppableEventParameter extends TCallbackEventParameter
{
public function getDragElementId() { return $this->getCallbackParameter()->draggable; }
public function getPositionTop() { return $this->getCallbackParameter()->position->top; }
public function getPositionLeft() { return $this->getCallbackParameter()->position->left; }
public function getOffsetTop() { return $this->getCallbackParameter()->offset->top; }
public function getOffsetLeft() { return $this->getCallbackParameter()->offset->left; }
/**
* GetDroppedControl
*
* Compatibility method to get the dropped control
* @return TControl dropped control, or null if not found
*/
public function getDroppedControl()
{
$control=null;
$service=prado::getApplication()->getService();
if ($service instanceof TPageService)
{
// Find the control
// Warning, this will not work if you have a '_' in your control Id !
$dropControlId=str_replace(TControl::CLIENT_ID_SEPARATOR,TControl::ID_SEPARATOR,$this->getCallbackParameter()->draggable);
$control=$service->getRequestedPage()->findControl($dropControlId);
}
return $control;
}
}
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