From e44a7e37b6c7b5961adaffc62b9042b8d442938e Mon Sep 17 00:00:00 2001
From: mensonge
Date: Thu, 13 Nov 2008 09:49:11 +0000
Subject: New feature: basic Ajax suggestion for tags and implementation of
 Dojo toolkit

git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
---
 includes/js/dojox/gfx/Mover.js | 62 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 includes/js/dojox/gfx/Mover.js

(limited to 'includes/js/dojox/gfx/Mover.js')

diff --git a/includes/js/dojox/gfx/Mover.js b/includes/js/dojox/gfx/Mover.js
new file mode 100644
index 0000000..6a5d456
--- /dev/null
+++ b/includes/js/dojox/gfx/Mover.js
@@ -0,0 +1,62 @@
+if(!dojo._hasResource["dojox.gfx.Mover"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.gfx.Mover"] = true;
+dojo.provide("dojox.gfx.Mover");
+
+dojo.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 = dojo.connect(d, "onmousemove", this, "onFirstMove");
+		this.events = [
+			dojo.connect(d, "onmousemove", this, "onMouseMove"),
+			dojo.connect(d, "onmouseup",   this, "destroy"),
+			// cancel text selection and text dragging
+			dojo.connect(d, "ondragstart",   dojo, "stopEvent"),
+			dojo.connect(d, "onselectstart", dojo, "stopEvent"),
+			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;
+		dojo.stopEvent(e);
+	},
+	// utilities
+	onFirstMove: function(){
+		// summary: it is meant to be called only once
+		this.host.onFirstMove(this);
+		dojo.disconnect(this.events.pop());
+	},
+	destroy: function(){
+		// summary: stops the move, deletes all references, so the object can be garbage-collected
+		dojo.forEach(this.events, dojo.disconnect);
+		// undo global settings
+		var h = this.host;
+		if(h && h.onMoveStop){
+			h.onMoveStop(this);
+		}
+		// destroy objects
+		this.events = this.shape = null;
+	}
+});
+
+}
-- 
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