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

1 files changed, 130 insertions, 0 deletions

diff --git a/includes/js/dojo/dnd/Moveable.js b/includes/js/dojo/dnd/Moveable.js
new file mode 100644
index 0000000..e9fd805
--- /dev/null
+++ b/includes/js/dojo/dnd/Moveable.js
@@ -0,0 +1,130 @@
+if(!dojo._hasResource["dojo.dnd.Moveable"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojo.dnd.Moveable"] = true;
+dojo.provide("dojo.dnd.Moveable");
+
+dojo.require("dojo.dnd.Mover");
+
+dojo.declare("dojo.dnd.Moveable", null, {
+	// object attributes (for markup)
+	handle: "",
+	delay: 0,
+	skip: false,
+	
+	constructor: function(node, params){
+		// summary: an object, which makes a node moveable
+		// node: Node: a node (or node's id) to be moved
+		// params: Object: an optional object with additional parameters;
+		//	following parameters are recognized:
+		//		handle: Node: a node (or node's id), which is used as a mouse handle
+		//			if omitted, the node itself is used as a handle
+		//		delay: Number: delay move by this number of pixels
+		//		skip: Boolean: skip move of form elements
+		//		mover: Object: a constructor of custom Mover
+		this.node = dojo.byId(node);
+		if(!params){ params = {}; }
+		this.handle = params.handle ? dojo.byId(params.handle) : null;
+		if(!this.handle){ this.handle = this.node; }
+		this.delay = params.delay > 0 ? params.delay : 0;
+		this.skip  = params.skip;
+		this.mover = params.mover ? params.mover : dojo.dnd.Mover;
+		this.events = [
+			dojo.connect(this.handle, "onmousedown", this, "onMouseDown"),
+			// cancel text selection and text dragging
+			dojo.connect(this.handle, "ondragstart",   this, "onSelectStart"),
+			dojo.connect(this.handle, "onselectstart", this, "onSelectStart")
+		];
+	},
+
+	// markup methods
+	markupFactory: function(params, node){
+		return new dojo.dnd.Moveable(node, params);
+	},
+
+	// methods
+	destroy: function(){
+		// summary: stops watching for possible move, deletes all references, so the object can be garbage-collected
+		dojo.forEach(this.events, dojo.disconnect);
+		this.events = this.node = this.handle = null;
+	},
+	
+	// mouse event processors
+	onMouseDown: function(e){
+		// summary: event processor for onmousedown, creates a Mover for the node
+		// e: Event: mouse event
+		if(this.skip && dojo.dnd.isFormElement(e)){ return; }
+		if(this.delay){
+			this.events.push(dojo.connect(this.handle, "onmousemove", this, "onMouseMove"));
+			this.events.push(dojo.connect(this.handle, "onmouseup", this, "onMouseUp"));
+			this._lastX = e.pageX;
+			this._lastY = e.pageY;
+		}else{
+			new this.mover(this.node, e, this);
+		}
+		dojo.stopEvent(e);
+	},
+	onMouseMove: function(e){
+		// summary: event processor for onmousemove, used only for delayed drags
+		// e: Event: mouse event
+		if(Math.abs(e.pageX - this._lastX) > this.delay || Math.abs(e.pageY - this._lastY) > this.delay){
+			this.onMouseUp(e);
+			new this.mover(this.node, e, this);
+		}
+		dojo.stopEvent(e);
+	},
+	onMouseUp: function(e){
+		// summary: event processor for onmouseup, used only for delayed delayed drags
+		// e: Event: mouse event
+		dojo.disconnect(this.events.pop());
+		dojo.disconnect(this.events.pop());
+	},
+	onSelectStart: function(e){
+		// summary: event processor for onselectevent and ondragevent
+		// e: Event: mouse event
+		if(!this.skip || !dojo.dnd.isFormElement(e)){
+			dojo.stopEvent(e);
+		}
+	},
+	
+	// local events
+	onMoveStart: function(/* dojo.dnd.Mover */ mover){
+		// summary: called before every move operation
+		dojo.publish("/dnd/move/start", [mover]);
+		dojo.addClass(dojo.body(), "dojoMove"); 
+		dojo.addClass(this.node, "dojoMoveItem"); 
+	},
+	onMoveStop: function(/* dojo.dnd.Mover */ mover){
+		// summary: called after every move operation
+		dojo.publish("/dnd/move/stop", [mover]);
+		dojo.removeClass(dojo.body(), "dojoMove");
+		dojo.removeClass(this.node, "dojoMoveItem");
+	},
+	onFirstMove: function(/* dojo.dnd.Mover */ mover){
+		// summary: called during the very first move notification,
+		//	can be used to initialize coordinates, can be overwritten.
+		
+		// default implementation does nothing
+	},
+	onMove: function(/* dojo.dnd.Mover */ mover, /* Object */ leftTop){
+		// summary: called during every move notification,
+		//	should actually move the node, can be overwritten.
+		this.onMoving(mover, leftTop);
+		var s = mover.node.style;
+		s.left = leftTop.l + "px";
+		s.top  = leftTop.t + "px";
+		this.onMoved(mover, leftTop);
+	},
+	onMoving: function(/* dojo.dnd.Mover */ mover, /* Object */ leftTop){
+		// summary: called before every incremental move,
+		//	can be overwritten.
+		
+		// default implementation does nothing
+	},
+	onMoved: function(/* dojo.dnd.Mover */ mover, /* Object */ leftTop){
+		// summary: called after every incremental move,
+		//	can be overwritten.
+		
+		// default implementation does nothing
+	}
+});
+
+}