From a089699c8915636ba4f158d77dba9b012bc93208 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@madoka.volgo-balt.ru>
Date: Fri, 4 Mar 2011 19:02:28 +0300
Subject: build custom layer of Dojo to speed up loading of tt-rss (refs #293)

---
 lib/dojo/dnd/TimedMoveable.js | 97 ++++++++++++++++++++++++++++++-------------
 1 file changed, 69 insertions(+), 28 deletions(-)

(limited to 'lib/dojo/dnd/TimedMoveable.js')

diff --git a/lib/dojo/dnd/TimedMoveable.js b/lib/dojo/dnd/TimedMoveable.js
index 05609a379..25a101e20 100644
--- a/lib/dojo/dnd/TimedMoveable.js
+++ b/lib/dojo/dnd/TimedMoveable.js
@@ -5,36 +5,77 @@
 */
 
 
-if(!dojo._hasResource["dojo.dnd.TimedMoveable"]){
-dojo._hasResource["dojo.dnd.TimedMoveable"]=true;
+if(!dojo._hasResource["dojo.dnd.TimedMoveable"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojo.dnd.TimedMoveable"] = true;
 dojo.provide("dojo.dnd.TimedMoveable");
+
 dojo.require("dojo.dnd.Moveable");
+
+/*=====
+dojo.declare("dojo.dnd.__TimedMoveableArgs", [dojo.dnd.__MoveableArgs], {
+	// timeout: Number
+	//		delay move by this number of ms,
+	//		accumulating position changes during the timeout
+	timeout: 0
+});
+=====*/
+
 (function(){
-var _1=dojo.dnd.Moveable.prototype.onMove;
-dojo.declare("dojo.dnd.TimedMoveable",dojo.dnd.Moveable,{timeout:40,constructor:function(_2,_3){
-if(!_3){
-_3={};
-}
-if(_3.timeout&&typeof _3.timeout=="number"&&_3.timeout>=0){
-this.timeout=_3.timeout;
-}
-},markupFactory:function(_4,_5){
-return new dojo.dnd.TimedMoveable(_5,_4);
-},onMoveStop:function(_6){
-if(_6._timer){
-clearTimeout(_6._timer);
-_1.call(this,_6,_6._leftTop);
-}
-dojo.dnd.Moveable.prototype.onMoveStop.apply(this,arguments);
-},onMove:function(_7,_8){
-_7._leftTop=_8;
-if(!_7._timer){
-var _9=this;
-_7._timer=setTimeout(function(){
-_7._timer=null;
-_1.call(_9,_7,_7._leftTop);
-},this.timeout);
-}
-}});
+	// precalculate long expressions
+	var oldOnMove = dojo.dnd.Moveable.prototype.onMove;
+		
+	dojo.declare("dojo.dnd.TimedMoveable", dojo.dnd.Moveable, {
+		// summary:
+		//		A specialized version of Moveable to support an FPS throttling.
+		//		This class puts an upper restriction on FPS, which may reduce 
+		//		the CPU load. The additional parameter "timeout" regulates
+		//		the delay before actually moving the moveable object.
+		
+		// object attributes (for markup)
+		timeout: 40,	// in ms, 40ms corresponds to 25 fps
+	
+		constructor: function(node, params){
+			// summary:
+			//		an object that makes a node moveable with a timer
+			// node: Node||String
+			//		a node (or node's id) to be moved
+			// params: dojo.dnd.__TimedMoveableArgs
+			//		object with additional parameters.
+			
+			// sanitize parameters
+			if(!params){ params = {}; }
+			if(params.timeout && typeof params.timeout == "number" && params.timeout >= 0){
+				this.timeout = params.timeout;
+			}
+		},
+	
+		// markup methods
+		markupFactory: function(params, node){
+			return new dojo.dnd.TimedMoveable(node, params);
+		},
+	
+		onMoveStop: function(/* dojo.dnd.Mover */ mover){
+			if(mover._timer){
+				// stop timer
+				clearTimeout(mover._timer)
+				// reflect the last received position
+				oldOnMove.call(this, mover, mover._leftTop)
+			}
+			dojo.dnd.Moveable.prototype.onMoveStop.apply(this, arguments);
+		},
+		onMove: function(/* dojo.dnd.Mover */ mover, /* Object */ leftTop){
+			mover._leftTop = leftTop;
+			if(!mover._timer){
+				var _t = this;	// to avoid using dojo.hitch()
+				mover._timer = setTimeout(function(){
+					// we don't have any pending requests
+					mover._timer = null;
+					// reflect the last received position
+					oldOnMove.call(_t, mover, mover._leftTop);
+				}, this.timeout);
+			}
+		}
+	});
 })();
+
 }
-- 
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