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<?php
/**
* TDraggable class file
*
* @author Christophe BOULAIN (Christophe.Boulain@gmail.com)
* @copyright Copyright © 2008, PradoSoft
* @license http://www.pradosoft.com/license
* @version $Id$
*/
/**
* TDraggable is a control which can be dragged
*
* This control will make "draggable" control.
*
* @author Christophe BOULAIN (Christophe.Boulain@gmail.com)
* @copyright Copyright © 2008, PradoSoft
* @license http://www.pradosoft.com/license
* @version $Id$
*/
class TDraggable extends TPanel
{
/**
* Set the handle id or css class
* @param string
*/
public function setHandle ($value)
{
$this->setViewState('DragHandle', TPropertyValue::ensureString($value), null);
}
/**
* Get the handle id or css class
* @return string
*/
public function getHandle ()
{
return $this->getViewState('DragHandle', null);
}
/**
* Determine if draggable element should revert to it orginal position
* upon release in an non-droppable container.
* @return boolean true to revert
*/
public function getRevert()
{
return $this->getViewState('Revert', true);
}
/**
* Sets whether the draggable element should revert to it orginal position
* upon release in an non-droppable container.
* @param boolean true to revert
*/
public function setRevert($value)
{
$this->setViewState('Revert', TPropertyValue::ensureBoolean($value), true);
}
/**
* Determine if the element should be cloned when dragged
* If true, Clones the element and drags the clone, leaving the original in place until the clone is dropped.
* Defaults to false
* @return boolean true to clone the element
*/
public function getGhosting ()
{
return $this->getViewState('Ghosting', false);
}
/**
* Sets wether the element should be cloned when dragged
* If true, Clones the element and drags the clone, leaving the original in place until the clone is dropped.
* Defaults to false
* @return boolean true to clone the element
*/
public function setGhosting ($value)
{
$this->setViewState('Ghosting', TPropertyValue::ensureBoolean($value), false);
}
/**
* Determine if the element should be constrainted in one direction or not
* @return CDraggableConstraint
*/
public function getConstraint()
{
return $this->getViewState('Constraint', TDraggableConstraint::None);
}
/**
* Set wether the element should be constrainted in one direction
* @param CDraggableConstraint
*/
public function setConstraint($value)
{
$this->setViewState('Constraint', TPropertyValue::ensureEnum($value, 'TDraggableConstraint'), TDraggableConstraint::None);
}
/**
* 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());
$cs=$this->getPage()->getClientScript();
$cs->registerPradoScript('dragdrop');
$options=TJavascript::encode($this->getPostBackOptions());
$class=$this->getClientClassName();
$code="new {$class}('{$this->getClientId()}', {$options}) ";
$cs->registerEndScript(sprintf('%08X', crc32($code)), $code);
}
/**
* 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
*/
protected function getClientClassName ()
{
return 'Draggable';
}
/**
* Gets the post back options for this textbox.
* @return array
*/
protected function getPostBackOptions()
{
$options['ID'] = $this->getClientID();
if (($handle=$this->getHandle())!== null) $options['handle']=$handle;
$options['revert']=$this->getRevert();
if (($constraint=$this->getConstraint())!==TDraggableConstraint::None) $options['constraint']=strtolower($constraint);
$options['ghosting']=$this->getGhosting();
return $options;
}
}
class TDraggableConstraint extends TEnumerable
{
const None='None';
const Horizontal='Horizontal';
const Vertical='Vertical';
}
?>
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