From 2c1d9d453404ec2e3344ef477bf834a2a3c065af Mon Sep 17 00:00:00 2001
From: Fabio Bas <ctrlaltca@gmail.com>
Date: Thu, 6 Feb 2014 16:23:42 +0100
Subject: Implemented basic support for callback events for JUI controls;
 TJuiDraggable and TJuiDroppable examples

---
 framework/Web/UI/JuiControls/TJuiDraggable.php | 75 +++++++++++++++++++++++---
 1 file changed, 68 insertions(+), 7 deletions(-)

(limited to 'framework/Web/UI/JuiControls/TJuiDraggable.php')

diff --git a/framework/Web/UI/JuiControls/TJuiDraggable.php b/framework/Web/UI/JuiControls/TJuiDraggable.php
index 19d334aa..56e6c7e7 100644
--- a/framework/Web/UI/JuiControls/TJuiDraggable.php
+++ b/framework/Web/UI/JuiControls/TJuiDraggable.php
@@ -10,16 +10,22 @@
  */
 
 Prado::using('System.Web.UI.JuiControls.TJuiControlAdapter');
+Prado::using('System.Web.UI.ActiveControls.TActivePanel');
 
 /**
  * TJuiDraggable class.
  *
+ * TJuiDraggable is an extension to {@link TActivePanel} based on jQuery-UI's
+ * {@link http://jqueryui.com/draggable/ Draggable} interaction.
+ * The panel can be moved using the mouse, and eventually dropped over a
+ * {@link TJuiDroppable}.
  *
  * <code>
  * <com:TJuiDraggable
  *	ID="drag1"
  *	Style="border: 1px solid red; width:100px;height:100px"
  *	Options.Axis="y"
+ *  OnStop="drag1_dragged"
  * >
  * drag me
  * </com:TJuiDraggable>
@@ -29,8 +35,10 @@ Prado::using('System.Web.UI.JuiControls.TJuiControlAdapter');
  * @package System.Web.UI.JuiControls
  * @since 3.3
  */
-class TJuiDraggable extends TActivePanel implements IJuiOptions
+class TJuiDraggable extends TActivePanel implements IJuiOptions, ICallbackEventHandler
 {
+	protected $_options;
+
 	/**
 	 * Creates a new callback control, sets the adapter to
 	 * TActiveControlAdapter. If you override this class, be sure to set the
@@ -48,10 +56,9 @@ class TJuiDraggable extends TActivePanel implements IJuiOptions
 	 */
 	public function getOptions()
 	{
-		static $options;
-		if($options===null)
-			$options=new TJuiControlOptions($this);
-		return $options;
+		if($this->_options===null)
+			$this->_options=new TJuiControlOptions($this);
+		return $this->_options;
 	}
 
 	/**
@@ -63,13 +70,21 @@ class TJuiDraggable extends TActivePanel implements IJuiOptions
 		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');
 	}
 
+	/**
+	 * Array containing valid javascript events
+	 * @return array()
+	 */
+	public function getValidEvents()
+	{
+		return array('create', 'drag', 'start', 'stop');
+	}
+
 	/**
 	 * @return array list of callback options.
 	 */
 	protected function getPostBackOptions()
 	{
-		$options = $this->getOptions()->toArray();
-		return $options;
+		return $this->getOptions()->toArray();
 	}
 
 	/**
@@ -86,4 +101,50 @@ class TJuiDraggable extends TActivePanel implements IJuiOptions
 		$code="jQuery('#".$this->getClientId()."').draggable(".$options.");";
 		$cs->registerEndScript(sprintf('%08X', crc32($code)), $code);
 	}
+
+	/**
+	 * Raises callback event. This method is required by the {@link ICallbackEventHandler}
+	 * interface.
+	 * @param TCallbackEventParameter the parameter associated with the callback event
+	 */
+	public function raiseCallbackEvent($param)
+	{
+		$this->getOptions()->raiseCallbackEvent($param);
+	}
+
+	/**
+	 * Raises the OnCreate event
+	 * @param object $params event parameters
+	 */
+	public function onCreate ($params)
+	{
+		$this->raiseEvent('OnCreate', $this, $params);
+	}
+
+	/**
+	 * Raises the OnDrag event
+	 * @param object $params event parameters
+	 */
+	public function onDrag ($params)
+	{
+		$this->raiseEvent('OnDrag', $this, $params);
+	}
+
+	/**
+	 * Raises the OnStart event
+	 * @param object $params event parameters
+	 */
+	public function onStart ($params)
+	{
+		$this->raiseEvent('OnStart', $this, $params);
+	}
+
+	/**
+	 * Raises the OnStop event
+	 * @param object $params event parameters
+	 */
+	public function onStop ($params)
+	{
+		$this->raiseEvent('OnStop', $this, $params);
+	}
 }
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