flymis/WebRoot/dojojs/src/dnd/HtmlDragManager.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.dnd.HtmlDragManager");
dojo.require("dojo.dnd.DragAndDrop");
dojo.require("dojo.event.*");
dojo.require("dojo.lang.array");
dojo.require("dojo.html.common");
dojo.require("dojo.html.layout");

// NOTE: there will only ever be a single instance of HTMLDragManager, so it's
// safe to use prototype properties for book-keeping.
dojo.declare("dojo.dnd.HtmlDragManager", dojo.dnd.DragManager, {
	/**
	 * There are several sets of actions that the DnD code cares about in the
	 * HTML context:
	 *	1.) mouse-down ->
	 *			(draggable selection)
	 *			(dragObject generation)
	 *		mouse-move ->
	 *			(draggable movement)
	 *			(droppable detection)
	 *			(inform droppable)
	 *			(inform dragObject)
	 *		mouse-up
	 *			(inform/destroy dragObject)
	 *			(inform draggable)
	 *			(inform droppable)
	 *	2.) mouse-down -> mouse-down
	 *			(click-hold context menu)
	 *	3.) mouse-click ->
	 *			(draggable selection)
	 *		shift-mouse-click ->
	 *			(augment draggable selection)
	 *		mouse-down ->
	 *			(dragObject generation)
	 *		mouse-move ->
	 *			(draggable movement)
	 *			(droppable detection)
	 *			(inform droppable)
	 *			(inform dragObject)
	 *		mouse-up
	 *			(inform draggable)
	 *			(inform droppable)
	 *	4.) mouse-up
	 *			(clobber draggable selection)
	 */
	disabled: false, // to kill all dragging!
	nestedTargets: false,
	mouseDownTimer: null, // used for click-hold operations
	dsCounter: 0,
	dsPrefix: "dojoDragSource",
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