flymis/WebRoot/dojojs/src/event/common.js

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/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.event.common");

dojo.require("dojo.lang.array");
dojo.require("dojo.lang.extras");
dojo.require("dojo.lang.func");

// TODO: connection filter functions
//			these are functions that accept a method invocation (like around
//			advice) and return a boolean based on it. That value determines
//			whether or not the connection proceeds. It could "feel" like around
//			advice for those who know what it is (calling proceed() or not),
//			but I think presenting it as a "filter" and/or calling it with the
//			function args and not the MethodInvocation might make it more
//			palletable to "normal" users than around-advice currently is
// TODO: execution scope mangling
//			YUI's event facility by default executes listeners in the context
//			of the source object. This is very odd, but should probably be
//			supported as an option (both for the source and for the dest). It
//			can be thought of as a connection-specific hitch().
// TODO: more resiliency for 4+ arguments to connect()

dojo.event = new function(){
	this._canTimeout = dojo.lang.isFunction(dj_global["setTimeout"])||dojo.lang.isAlien(dj_global["setTimeout"]);

	// FIXME: where should we put this method (not here!)?
	function interpolateArgs(args, searchForNames){
		var dl = dojo.lang;
		var ao = {
			srcObj: dj_global,
			srcFunc: null,
			adviceObj: dj_global,
			adviceFunc: null,
			aroundObj: null,
			aroundFunc: null,
			adviceType: (args.length>2) ? args[0] : "after",
			precedence: "last",
			once: false,
			delay: null,
			rate: 0,
			adviceMsg: false
		};

		switch(args.length){
			case 0: return;
			case 1: return;
			case 2:
				ao.srcFunc = args[0];
				ao.adviceFunc = args[1];
				break;
			case 3: