Initial commit of intern.ccwn.org contentsHEADmaster

1 files changed, 60 insertions, 0 deletions

diff --git a/js/dojo/dojox/gfx/Mover.js b/js/dojo/dojox/gfx/Mover.js
new file mode 100644
index 0000000..3735f82
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+++ b/js/dojo/dojox/gfx/Mover.js
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+//>>built
+define("dojox/gfx/Mover", ["dojo/_base/lang","dojo/_base/array", "dojo/_base/declare", "dojo/_base/connect", "dojo/_base/event"], 
+  function(lang,arr,declare,connect,evt){
+	return declare("dojox.gfx.Mover", null, {
+		constructor: function(shape, e, host){
+			// summary: an object, which makes a shape follow the mouse,
+			//	used as a default mover, and as a base class for custom movers
+			// shape: dojox.gfx.Shape: a shape object to be moved
+			// e: Event: a mouse event, which started the move;
+			//	only clientX and clientY properties are used
+			// host: Object?: object which implements the functionality of the move,
+			//	 and defines proper events (onMoveStart and onMoveStop)
+			this.shape = shape;
+			this.lastX = e.clientX
+			this.lastY = e.clientY;
+			var h = this.host = host, d = document,
+				firstEvent = connect.connect(d, "onmousemove", this, "onFirstMove");
+			this.events = [
+				connect.connect(d, "onmousemove", this, "onMouseMove"),
+				connect.connect(d, "onmouseup",   this, "destroy"),
+				// cancel text selection and text dragging
+				connect.connect(d, "ondragstart",   evt, "stop"),
+				connect.connect(d, "onselectstart", evt, "stop"),
+				firstEvent
+			];
+			// notify that the move has started
+			if(h && h.onMoveStart){
+				h.onMoveStart(this);
+			}
+		},
+		// mouse event processors
+		onMouseMove: function(e){
+			// summary: event processor for onmousemove
+			// e: Event: mouse event
+			var x = e.clientX;
+			var y = e.clientY;
+			this.host.onMove(this, {dx: x - this.lastX, dy: y - this.lastY});
+			this.lastX = x;
+			this.lastY = y;
+			evt.stop(e);
+		},
+		// utilities
+		onFirstMove: function(){
+			// summary: it is meant to be called only once
+			this.host.onFirstMove(this);
+			connect.disconnect(this.events.pop());
+		},
+		destroy: function(){
+			// summary: stops the move, deletes all references, so the object can be garbage-collected
+			arr.forEach(this.events, connect.disconnect);
+			// undo global settings
+			var h = this.host;
+			if(h && h.onMoveStop){
+				h.onMoveStop(this);
+			}
+			// destroy objects
+			this.events = this.shape = null;
+		}
+	});
+});