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/*
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Copyright (c) 2009, Yahoo! Inc. All rights reserved.
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Code licensed under the BSD License:
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http://developer.yahoo.net/yui/license.txt
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version: 2.8.0r4
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*/
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/**
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* The drag and drop utility provides a framework for building drag and drop
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* applications. In addition to enabling drag and drop for specific elements,
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* the drag and drop elements are tracked by the manager class, and the
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* interactions between the various elements are tracked during the drag and
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* the implementing code is notified about these important moments.
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* @module dragdrop
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* @title Drag and Drop
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* @requires yahoo,dom,event
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* @namespace YAHOO.util
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*/
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// Only load the library once. Rewriting the manager class would orphan
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// existing drag and drop instances.
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if (!YAHOO.util.DragDropMgr) {
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/**
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* DragDropMgr is a singleton that tracks the element interaction for
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* all DragDrop items in the window. Generally, you will not call
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* this class directly, but it does have helper methods that could
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* be useful in your DragDrop implementations.
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* @class DragDropMgr
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* @static
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*/
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YAHOO.util.DragDropMgr = function() {
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var Event = YAHOO.util.Event,
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Dom = YAHOO.util.Dom;
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return {
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/**
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* This property is used to turn on global use of the shim element on all DragDrop instances, defaults to false for backcompat. (Use: YAHOO.util.DDM.useShim = true)
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* @property useShim
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* @type Boolean
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* @static
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*/
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useShim: false,
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/**
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* This property is used to determine if the shim is active over the screen, default false.
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* @private
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* @property _shimActive
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* @type Boolean
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* @static
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*/
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_shimActive: false,
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/**
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* This property is used when useShim is set on a DragDrop object to store the current state of DDM.useShim so it can be reset when a drag operation is done.
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* @private
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* @property _shimState
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* @type Boolean
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* @static
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*/
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_shimState: false,
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/**
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* This property is used when useShim is set to true, it will set the opacity on the shim to .5 for debugging. Use: (YAHOO.util.DDM._debugShim = true;)
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* @private
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* @property _debugShim
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* @type Boolean
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* @static
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*/
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_debugShim: false,
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/**
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* This method will create a shim element (giving it the id of yui-ddm-shim), it also attaches the mousemove and mouseup listeners to it and attaches a scroll listener on the window
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* @private
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* @method _sizeShim
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* @static
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*/
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_createShim: function() {
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var s = document.createElement('div');
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s.id = 'yui-ddm-shim';
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if (document.body.firstChild) {
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document.body.insertBefore(s, document.body.firstChild);
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} else {
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document.body.appendChild(s);
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}
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s.style.display = 'none';
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s.style.backgroundColor = 'red';
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s.style.position = 'absolute';
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s.style.zIndex = '99999';
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Dom.setStyle(s, 'opacity', '0');
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this._shim = s;
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Event.on(s, "mouseup", this.handleMouseUp, this, true);
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Event.on(s, "mousemove", this.handleMouseMove, this, true);
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Event.on(window, 'scroll', this._sizeShim, this, true);
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},
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/**
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* This method will size the shim, called from activate and on window scroll event
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* @private
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* @method _sizeShim
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* @static
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*/
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_sizeShim: function() {
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if (this._shimActive) {
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var s = this._shim;
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s.style.height = Dom.getDocumentHeight() + 'px';
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s.style.width = Dom.getDocumentWidth() + 'px';
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s.style.top = '0';
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s.style.left = '0';
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}
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},
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/**
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* This method will create the shim element if needed, then show the shim element, size the element and set the _shimActive property to true
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* @private
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* @method _activateShim
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* @static
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*/
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_activateShim: function() {
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if (this.useShim) {
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if (!this._shim) {
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this._createShim();
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}
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this._shimActive = true;
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var s = this._shim,
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o = '0';
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if (this._debugShim) {
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o = '.5';
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}
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Dom.setStyle(s, 'opacity', o);
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this._sizeShim();
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s.style.display = 'block';
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}
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},
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/**
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* This method will hide the shim element and set the _shimActive property to false
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* @private
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* @method _deactivateShim
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* @static
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*/
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_deactivateShim: function() {
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this._shim.style.display = 'none';
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this._shimActive = false;
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},
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/**
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* The HTML element created to use as a shim over the document to track mouse movements
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* @private
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* @property _shim
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* @type HTMLElement
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* @static
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*/
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_shim: null,
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/**
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* Two dimensional Array of registered DragDrop objects. The first
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* dimension is the DragDrop item group, the second the DragDrop
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* object.
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* @property ids
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* @type {string: string}
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* @private
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* @static
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*/
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ids: {},
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/**
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* Array of element ids defined as drag handles. Used to determine
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* if the element that generated the mousedown event is actually the
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* handle and not the html element itself.
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* @property handleIds
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* @type {string: string}
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* @private
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* @static
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*/
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handleIds: {},
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/**
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* the DragDrop object that is currently being dragged
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* @property dragCurrent
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* @type DragDrop
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* @private
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* @static
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**/
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dragCurrent: null,
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/**
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* the DragDrop object(s) that are being hovered over
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* @property dragOvers
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* @type Array
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* @private
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* @static
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*/
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dragOvers: {},
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/**
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* the X distance between the cursor and the object being dragged
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* @property deltaX
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* @type int
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* @private
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* @static
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*/
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deltaX: 0,
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/**
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* the Y distance between the cursor and the object being dragged
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* @property deltaY
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* @type int
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* @private
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* @static
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*/
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deltaY: 0,
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/**
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* Flag to determine if we should prevent the default behavior of the
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* events we define. By default this is true, but this can be set to
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* false if you need the default behavior (not recommended)
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* @property preventDefault
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* @type boolean
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* @static
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*/
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preventDefault: true,
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/**
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* Flag to determine if we should stop the propagation of the events
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* we generate. This is true by default but you may want to set it to
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* false if the html element contains other features that require the
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* mouse click.
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* @property stopPropagation
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* @type boolean
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* @static
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*/
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stopPropagation: true,
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/**
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* Internal flag that is set to true when drag and drop has been
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* initialized
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* @property initialized
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* @private
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* @static
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*/
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initialized: false,
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/**
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* All drag and drop can be disabled.
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* @property locked
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* @private
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* @static
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*/
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locked: false,
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/**
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* Provides additional information about the the current set of
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* interactions. Can be accessed from the event handlers. It
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* contains the following properties:
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*
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* out: onDragOut interactions
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* enter: onDragEnter interactions
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* over: onDragOver interactions
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* drop: onDragDrop interactions
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* point: The location of the cursor
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* draggedRegion: The location of dragged element at the time
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* of the interaction
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* sourceRegion: The location of the source elemtn at the time
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* of the interaction
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* validDrop: boolean
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* @property interactionInfo
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* @type object
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* @static
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*/
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interactionInfo: null,
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/**
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* Called the first time an element is registered.
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* @method init
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* @private
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* @static
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*/
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init: function() {
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this.initialized = true;
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},
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/**
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* In point mode, drag and drop interaction is defined by the
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* location of the cursor during the drag/drop
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* @property POINT
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* @type int
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* @static
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* @final
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*/
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POINT: 0,
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/**
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* In intersect mode, drag and drop interaction is defined by the
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* cursor position or the amount of overlap of two or more drag and
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* drop objects.
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* @property INTERSECT
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* @type int
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* @static
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* @final
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*/
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INTERSECT: 1,
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/**
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* In intersect mode, drag and drop interaction is defined only by the
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* overlap of two or more drag and drop objects.
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* @property STRICT_INTERSECT
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* @type int
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* @static
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* @final
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*/
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STRICT_INTERSECT: 2,
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/**
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* The current drag and drop mode. Default: POINT
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* @property mode
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* @type int
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* @static
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*/
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mode: 0,
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/**
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* Runs method on all drag and drop objects
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* @method _execOnAll
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* @private
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* @static
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*/
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_execOnAll: function(sMethod, args) {
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for (var i in this.ids) {
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for (var j in this.ids[i]) {
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var oDD = this.ids[i][j];
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if (! this.isTypeOfDD(oDD)) {
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continue;
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}
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oDD[sMethod].apply(oDD, args);
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}
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}
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},
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/**
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* Drag and drop initialization. Sets up the global event handlers
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* @method _onLoad
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* @private
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* @static
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*/
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_onLoad: function() {
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this.init();
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Event.on(document, "mouseup", this.handleMouseUp, this, true);
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Event.on(document, "mousemove", this.handleMouseMove, this, true);
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Event.on(window, "unload", this._onUnload, this, true);
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Event.on(window, "resize", this._onResize, this, true);
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// Event.on(window, "mouseout", this._test);
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},
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/**
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* Reset constraints on all drag and drop objs
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* @method _onResize
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* @private
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* @static
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*/
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_onResize: function(e) {
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this._execOnAll("resetConstraints", []);
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},
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/**
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* Lock all drag and drop functionality
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* @method lock
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* @static
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*/
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lock: function() { this.locked = true; },
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/**
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* Unlock all drag and drop functionality
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* @method unlock
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* @static
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*/
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unlock: function() { this.locked = false; },
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/**
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* Is drag and drop locked?
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* @method isLocked
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* @return {boolean} True if drag and drop is locked, false otherwise.
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* @static
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*/
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isLocked: function() { return this.locked; },
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/**
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* Location cache that is set for all drag drop objects when a drag is
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* initiated, cleared when the drag is finished.
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* @property locationCache
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* @private
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* @static
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*/
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locationCache: {},
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/**
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* Set useCache to false if you want to force object the lookup of each
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* drag and drop linked element constantly during a drag.
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* @property useCache
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* @type boolean
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* @static
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*/
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useCache: true,
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/**
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* The number of pixels that the mouse needs to move after the
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* mousedown before the drag is initiated. Default=3;
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* @property clickPixelThresh
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* @type int
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* @static
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*/
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clickPixelThresh: 3,
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/**
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* The number of milliseconds after the mousedown event to initiate the
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* drag if we don't get a mouseup event. Default=1000
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* @property clickTimeThresh
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* @type int
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* @static
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*/
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clickTimeThresh: 1000,
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/**
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* Flag that indicates that either the drag pixel threshold or the
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* mousdown time threshold has been met
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* @property dragThreshMet
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* @type boolean
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* @private
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* @static
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*/
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dragThreshMet: false,
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/**
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* Timeout used for the click time threshold
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* @property clickTimeout
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* @type Object
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* @private
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* @static
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*/
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clickTimeout: null,
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/**
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* The X position of the mousedown event stored for later use when a
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* drag threshold is met.
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* @property startX
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* @type int
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* @private
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* @static
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*/
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startX: 0,
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/**
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* The Y position of the mousedown event stored for later use when a
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* drag threshold is met.
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* @property startY
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* @type int
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* @private
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* @static
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*/
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startY: 0,
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/**
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* Flag to determine if the drag event was fired from the click timeout and
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* not the mouse move threshold.
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* @property fromTimeout
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* @type boolean
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* @private
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* @static
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*/
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fromTimeout: false,
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/**
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* Each DragDrop instance must be registered with the DragDropMgr.
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* This is executed in DragDrop.init()
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* @method regDragDrop
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* @param {DragDrop} oDD the DragDrop object to register
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* @param {String} sGroup the name of the group this element belongs to
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* @static
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*/
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regDragDrop: function(oDD, sGroup) {
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if (!this.initialized) { this.init(); }
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if (!this.ids[sGroup]) {
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this.ids[sGroup] = {};
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}
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this.ids[sGroup][oDD.id] = oDD;
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},
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/**
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* Removes the supplied dd instance from the supplied group. Executed
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* by DragDrop.removeFromGroup, so don't call this function directly.
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* @method removeDDFromGroup
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* @private
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* @static
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*/
|
|
|
removeDDFromGroup: function(oDD, sGroup) {
|
|
|
if (!this.ids[sGroup]) {
|
|
|
this.ids[sGroup] = {};
|
|
|
}
|
|
|
|
|
|
var obj = this.ids[sGroup];
|
|
|
if (obj && obj[oDD.id]) {
|
|
|
delete obj[oDD.id];
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Unregisters a drag and drop item. This is executed in
|
|
|
* DragDrop.unreg, use that method instead of calling this directly.
|
|
|
* @method _remove
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
_remove: function(oDD) {
|
|
|
for (var g in oDD.groups) {
|
|
|
if (g) {
|
|
|
var item = this.ids[g];
|
|
|
if (item && item[oDD.id]) {
|
|
|
delete item[oDD.id];
|
|
|
}
|
|
|
}
|
|
|
|
|
|
}
|
|
|
delete this.handleIds[oDD.id];
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Each DragDrop handle element must be registered. This is done
|
|
|
* automatically when executing DragDrop.setHandleElId()
|
|
|
* @method regHandle
|
|
|
* @param {String} sDDId the DragDrop id this element is a handle for
|
|
|
* @param {String} sHandleId the id of the element that is the drag
|
|
|
* handle
|
|
|
* @static
|
|
|
*/
|
|
|
regHandle: function(sDDId, sHandleId) {
|
|
|
if (!this.handleIds[sDDId]) {
|
|
|
this.handleIds[sDDId] = {};
|
|
|
}
|
|
|
this.handleIds[sDDId][sHandleId] = sHandleId;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Utility function to determine if a given element has been
|
|
|
* registered as a drag drop item.
|
|
|
* @method isDragDrop
|
|
|
* @param {String} id the element id to check
|
|
|
* @return {boolean} true if this element is a DragDrop item,
|
|
|
* false otherwise
|
|
|
* @static
|
|
|
*/
|
|
|
isDragDrop: function(id) {
|
|
|
return ( this.getDDById(id) ) ? true : false;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns the drag and drop instances that are in all groups the
|
|
|
* passed in instance belongs to.
|
|
|
* @method getRelated
|
|
|
* @param {DragDrop} p_oDD the obj to get related data for
|
|
|
* @param {boolean} bTargetsOnly if true, only return targetable objs
|
|
|
* @return {DragDrop[]} the related instances
|
|
|
* @static
|
|
|
*/
|
|
|
getRelated: function(p_oDD, bTargetsOnly) {
|
|
|
var oDDs = [];
|
|
|
for (var i in p_oDD.groups) {
|
|
|
for (var j in this.ids[i]) {
|
|
|
var dd = this.ids[i][j];
|
|
|
if (! this.isTypeOfDD(dd)) {
|
|
|
continue;
|
|
|
}
|
|
|
if (!bTargetsOnly || dd.isTarget) {
|
|
|
oDDs[oDDs.length] = dd;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return oDDs;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns true if the specified dd target is a legal target for
|
|
|
* the specifice drag obj
|
|
|
* @method isLegalTarget
|
|
|
* @param {DragDrop} the drag obj
|
|
|
* @param {DragDrop} the target
|
|
|
* @return {boolean} true if the target is a legal target for the
|
|
|
* dd obj
|
|
|
* @static
|
|
|
*/
|
|
|
isLegalTarget: function (oDD, oTargetDD) {
|
|
|
var targets = this.getRelated(oDD, true);
|
|
|
for (var i=0, len=targets.length;i<len;++i) {
|
|
|
if (targets[i].id == oTargetDD.id) {
|
|
|
return true;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return false;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* My goal is to be able to transparently determine if an object is
|
|
|
* typeof DragDrop, and the exact subclass of DragDrop. typeof
|
|
|
* returns "object", oDD.constructor.toString() always returns
|
|
|
* "DragDrop" and not the name of the subclass. So for now it just
|
|
|
* evaluates a well-known variable in DragDrop.
|
|
|
* @method isTypeOfDD
|
|
|
* @param {Object} the object to evaluate
|
|
|
* @return {boolean} true if typeof oDD = DragDrop
|
|
|
* @static
|
|
|
*/
|
|
|
isTypeOfDD: function (oDD) {
|
|
|
return (oDD && oDD.__ygDragDrop);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Utility function to determine if a given element has been
|
|
|
* registered as a drag drop handle for the given Drag Drop object.
|
|
|
* @method isHandle
|
|
|
* @param {String} id the element id to check
|
|
|
* @return {boolean} true if this element is a DragDrop handle, false
|
|
|
* otherwise
|
|
|
* @static
|
|
|
*/
|
|
|
isHandle: function(sDDId, sHandleId) {
|
|
|
return ( this.handleIds[sDDId] &&
|
|
|
this.handleIds[sDDId][sHandleId] );
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns the DragDrop instance for a given id
|
|
|
* @method getDDById
|
|
|
* @param {String} id the id of the DragDrop object
|
|
|
* @return {DragDrop} the drag drop object, null if it is not found
|
|
|
* @static
|
|
|
*/
|
|
|
getDDById: function(id) {
|
|
|
for (var i in this.ids) {
|
|
|
if (this.ids[i][id]) {
|
|
|
return this.ids[i][id];
|
|
|
}
|
|
|
}
|
|
|
return null;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Fired after a registered DragDrop object gets the mousedown event.
|
|
|
* Sets up the events required to track the object being dragged
|
|
|
* @method handleMouseDown
|
|
|
* @param {Event} e the event
|
|
|
* @param oDD the DragDrop object being dragged
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
handleMouseDown: function(e, oDD) {
|
|
|
//this._activateShim();
|
|
|
|
|
|
this.currentTarget = YAHOO.util.Event.getTarget(e);
|
|
|
|
|
|
this.dragCurrent = oDD;
|
|
|
|
|
|
var el = oDD.getEl();
|
|
|
|
|
|
// track start position
|
|
|
this.startX = YAHOO.util.Event.getPageX(e);
|
|
|
this.startY = YAHOO.util.Event.getPageY(e);
|
|
|
|
|
|
this.deltaX = this.startX - el.offsetLeft;
|
|
|
this.deltaY = this.startY - el.offsetTop;
|
|
|
|
|
|
this.dragThreshMet = false;
|
|
|
|
|
|
this.clickTimeout = setTimeout(
|
|
|
function() {
|
|
|
var DDM = YAHOO.util.DDM;
|
|
|
DDM.startDrag(DDM.startX, DDM.startY);
|
|
|
DDM.fromTimeout = true;
|
|
|
},
|
|
|
this.clickTimeThresh );
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Fired when either the drag pixel threshold or the mousedown hold
|
|
|
* time threshold has been met.
|
|
|
* @method startDrag
|
|
|
* @param x {int} the X position of the original mousedown
|
|
|
* @param y {int} the Y position of the original mousedown
|
|
|
* @static
|
|
|
*/
|
|
|
startDrag: function(x, y) {
|
|
|
if (this.dragCurrent && this.dragCurrent.useShim) {
|
|
|
this._shimState = this.useShim;
|
|
|
this.useShim = true;
|
|
|
}
|
|
|
this._activateShim();
|
|
|
clearTimeout(this.clickTimeout);
|
|
|
var dc = this.dragCurrent;
|
|
|
if (dc && dc.events.b4StartDrag) {
|
|
|
dc.b4StartDrag(x, y);
|
|
|
dc.fireEvent('b4StartDragEvent', { x: x, y: y });
|
|
|
}
|
|
|
if (dc && dc.events.startDrag) {
|
|
|
dc.startDrag(x, y);
|
|
|
dc.fireEvent('startDragEvent', { x: x, y: y });
|
|
|
}
|
|
|
this.dragThreshMet = true;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Internal function to handle the mouseup event. Will be invoked
|
|
|
* from the context of the document.
|
|
|
* @method handleMouseUp
|
|
|
* @param {Event} e the event
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
handleMouseUp: function(e) {
|
|
|
if (this.dragCurrent) {
|
|
|
clearTimeout(this.clickTimeout);
|
|
|
|
|
|
if (this.dragThreshMet) {
|
|
|
if (this.fromTimeout) {
|
|
|
this.fromTimeout = false;
|
|
|
this.handleMouseMove(e);
|
|
|
}
|
|
|
this.fromTimeout = false;
|
|
|
this.fireEvents(e, true);
|
|
|
} else {
|
|
|
}
|
|
|
|
|
|
this.stopDrag(e);
|
|
|
|
|
|
this.stopEvent(e);
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Utility to stop event propagation and event default, if these
|
|
|
* features are turned on.
|
|
|
* @method stopEvent
|
|
|
* @param {Event} e the event as returned by this.getEvent()
|
|
|
* @static
|
|
|
*/
|
|
|
stopEvent: function(e) {
|
|
|
if (this.stopPropagation) {
|
|
|
YAHOO.util.Event.stopPropagation(e);
|
|
|
}
|
|
|
|
|
|
if (this.preventDefault) {
|
|
|
YAHOO.util.Event.preventDefault(e);
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Ends the current drag, cleans up the state, and fires the endDrag
|
|
|
* and mouseUp events. Called internally when a mouseup is detected
|
|
|
* during the drag. Can be fired manually during the drag by passing
|
|
|
* either another event (such as the mousemove event received in onDrag)
|
|
|
* or a fake event with pageX and pageY defined (so that endDrag and
|
|
|
* onMouseUp have usable position data.). Alternatively, pass true
|
|
|
* for the silent parameter so that the endDrag and onMouseUp events
|
|
|
* are skipped (so no event data is needed.)
|
|
|
*
|
|
|
* @method stopDrag
|
|
|
* @param {Event} e the mouseup event, another event (or a fake event)
|
|
|
* with pageX and pageY defined, or nothing if the
|
|
|
* silent parameter is true
|
|
|
* @param {boolean} silent skips the enddrag and mouseup events if true
|
|
|
* @static
|
|
|
*/
|
|
|
stopDrag: function(e, silent) {
|
|
|
var dc = this.dragCurrent;
|
|
|
// Fire the drag end event for the item that was dragged
|
|
|
if (dc && !silent) {
|
|
|
if (this.dragThreshMet) {
|
|
|
if (dc.events.b4EndDrag) {
|
|
|
dc.b4EndDrag(e);
|
|
|
dc.fireEvent('b4EndDragEvent', { e: e });
|
|
|
}
|
|
|
if (dc.events.endDrag) {
|
|
|
dc.endDrag(e);
|
|
|
dc.fireEvent('endDragEvent', { e: e });
|
|
|
}
|
|
|
}
|
|
|
if (dc.events.mouseUp) {
|
|
|
dc.onMouseUp(e);
|
|
|
dc.fireEvent('mouseUpEvent', { e: e });
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (this._shimActive) {
|
|
|
this._deactivateShim();
|
|
|
if (this.dragCurrent && this.dragCurrent.useShim) {
|
|
|
this.useShim = this._shimState;
|
|
|
this._shimState = false;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
this.dragCurrent = null;
|
|
|
this.dragOvers = {};
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Internal function to handle the mousemove event. Will be invoked
|
|
|
* from the context of the html element.
|
|
|
*
|
|
|
* @TODO figure out what we can do about mouse events lost when the
|
|
|
* user drags objects beyond the window boundary. Currently we can
|
|
|
* detect this in internet explorer by verifying that the mouse is
|
|
|
* down during the mousemove event. Firefox doesn't give us the
|
|
|
* button state on the mousemove event.
|
|
|
* @method handleMouseMove
|
|
|
* @param {Event} e the event
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
handleMouseMove: function(e) {
|
|
|
|
|
|
var dc = this.dragCurrent;
|
|
|
if (dc) {
|
|
|
|
|
|
// var button = e.which || e.button;
|
|
|
|
|
|
// check for IE mouseup outside of page boundary
|
|
|
if (YAHOO.util.Event.isIE && !e.button) {
|
|
|
this.stopEvent(e);
|
|
|
return this.handleMouseUp(e);
|
|
|
} else {
|
|
|
if (e.clientX < 0 || e.clientY < 0) {
|
|
|
//This will stop the element from leaving the viewport in FF, Opera & Safari
|
|
|
//Not turned on yet
|
|
|
//this.stopEvent(e);
|
|
|
//return false;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (!this.dragThreshMet) {
|
|
|
var diffX = Math.abs(this.startX - YAHOO.util.Event.getPageX(e));
|
|
|
var diffY = Math.abs(this.startY - YAHOO.util.Event.getPageY(e));
|
|
|
if (diffX > this.clickPixelThresh ||
|
|
|
diffY > this.clickPixelThresh) {
|
|
|
this.startDrag(this.startX, this.startY);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (this.dragThreshMet) {
|
|
|
if (dc && dc.events.b4Drag) {
|
|
|
dc.b4Drag(e);
|
|
|
dc.fireEvent('b4DragEvent', { e: e});
|
|
|
}
|
|
|
if (dc && dc.events.drag) {
|
|
|
dc.onDrag(e);
|
|
|
dc.fireEvent('dragEvent', { e: e});
|
|
|
}
|
|
|
if (dc) {
|
|
|
this.fireEvents(e, false);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
this.stopEvent(e);
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Iterates over all of the DragDrop elements to find ones we are
|
|
|
* hovering over or dropping on
|
|
|
* @method fireEvents
|
|
|
* @param {Event} e the event
|
|
|
* @param {boolean} isDrop is this a drop op or a mouseover op?
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
fireEvents: function(e, isDrop) {
|
|
|
var dc = this.dragCurrent;
|
|
|
|
|
|
// If the user did the mouse up outside of the window, we could
|
|
|
// get here even though we have ended the drag.
|
|
|
// If the config option dragOnly is true, bail out and don't fire the events
|
|
|
if (!dc || dc.isLocked() || dc.dragOnly) {
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
var x = YAHOO.util.Event.getPageX(e),
|
|
|
y = YAHOO.util.Event.getPageY(e),
|
|
|
pt = new YAHOO.util.Point(x,y),
|
|
|
pos = dc.getTargetCoord(pt.x, pt.y),
|
|
|
el = dc.getDragEl(),
|
|
|
events = ['out', 'over', 'drop', 'enter'],
|
|
|
curRegion = new YAHOO.util.Region( pos.y,
|
|
|
pos.x + el.offsetWidth,
|
|
|
pos.y + el.offsetHeight,
|
|
|
pos.x ),
|
|
|
|
|
|
oldOvers = [], // cache the previous dragOver array
|
|
|
inGroupsObj = {},
|
|
|
inGroups = [],
|
|
|
data = {
|
|
|
outEvts: [],
|
|
|
overEvts: [],
|
|
|
dropEvts: [],
|
|
|
enterEvts: []
|
|
|
};
|
|
|
|
|
|
|
|
|
// Check to see if the object(s) we were hovering over is no longer
|
|
|
// being hovered over so we can fire the onDragOut event
|
|
|
for (var i in this.dragOvers) {
|
|
|
|
|
|
var ddo = this.dragOvers[i];
|
|
|
|
|
|
if (! this.isTypeOfDD(ddo)) {
|
|
|
continue;
|
|
|
}
|
|
|
if (! this.isOverTarget(pt, ddo, this.mode, curRegion)) {
|
|
|
data.outEvts.push( ddo );
|
|
|
}
|
|
|
|
|
|
oldOvers[i] = true;
|
|
|
delete this.dragOvers[i];
|
|
|
}
|
|
|
|
|
|
for (var sGroup in dc.groups) {
|
|
|
|
|
|
if ("string" != typeof sGroup) {
|
|
|
continue;
|
|
|
}
|
|
|
|
|
|
for (i in this.ids[sGroup]) {
|
|
|
var oDD = this.ids[sGroup][i];
|
|
|
if (! this.isTypeOfDD(oDD)) {
|
|
|
continue;
|
|
|
}
|
|
|
|
|
|
if (oDD.isTarget && !oDD.isLocked() && oDD != dc) {
|
|
|
if (this.isOverTarget(pt, oDD, this.mode, curRegion)) {
|
|
|
inGroupsObj[sGroup] = true;
|
|
|
// look for drop interactions
|
|
|
if (isDrop) {
|
|
|
data.dropEvts.push( oDD );
|
|
|
// look for drag enter and drag over interactions
|
|
|
} else {
|
|
|
|
|
|
// initial drag over: dragEnter fires
|
|
|
if (!oldOvers[oDD.id]) {
|
|
|
data.enterEvts.push( oDD );
|
|
|
// subsequent drag overs: dragOver fires
|
|
|
} else {
|
|
|
data.overEvts.push( oDD );
|
|
|
}
|
|
|
|
|
|
this.dragOvers[oDD.id] = oDD;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
this.interactionInfo = {
|
|
|
out: data.outEvts,
|
|
|
enter: data.enterEvts,
|
|
|
over: data.overEvts,
|
|
|
drop: data.dropEvts,
|
|
|
point: pt,
|
|
|
draggedRegion: curRegion,
|
|
|
sourceRegion: this.locationCache[dc.id],
|
|
|
validDrop: isDrop
|
|
|
};
|
|
|
|
|
|
|
|
|
for (var inG in inGroupsObj) {
|
|
|
inGroups.push(inG);
|
|
|
}
|
|
|
|
|
|
// notify about a drop that did not find a target
|
|
|
if (isDrop && !data.dropEvts.length) {
|
|
|
this.interactionInfo.validDrop = false;
|
|
|
if (dc.events.invalidDrop) {
|
|
|
dc.onInvalidDrop(e);
|
|
|
dc.fireEvent('invalidDropEvent', { e: e });
|
|
|
}
|
|
|
}
|
|
|
for (i = 0; i < events.length; i++) {
|
|
|
var tmp = null;
|
|
|
if (data[events[i] + 'Evts']) {
|
|
|
tmp = data[events[i] + 'Evts'];
|
|
|
}
|
|
|
if (tmp && tmp.length) {
|
|
|
var type = events[i].charAt(0).toUpperCase() + events[i].substr(1),
|
|
|
ev = 'onDrag' + type,
|
|
|
b4 = 'b4Drag' + type,
|
|
|
cev = 'drag' + type + 'Event',
|
|
|
check = 'drag' + type;
|
|
|
if (this.mode) {
|
|
|
if (dc.events[b4]) {
|
|
|
dc[b4](e, tmp, inGroups);
|
|
|
dc.fireEvent(b4 + 'Event', { event: e, info: tmp, group: inGroups });
|
|
|
|
|
|
}
|
|
|
if (dc.events[check]) {
|
|
|
dc[ev](e, tmp, inGroups);
|
|
|
dc.fireEvent(cev, { event: e, info: tmp, group: inGroups });
|
|
|
}
|
|
|
} else {
|
|
|
for (var b = 0, len = tmp.length; b < len; ++b) {
|
|
|
if (dc.events[b4]) {
|
|
|
dc[b4](e, tmp[b].id, inGroups[0]);
|
|
|
dc.fireEvent(b4 + 'Event', { event: e, info: tmp[b].id, group: inGroups[0] });
|
|
|
}
|
|
|
if (dc.events[check]) {
|
|
|
dc[ev](e, tmp[b].id, inGroups[0]);
|
|
|
dc.fireEvent(cev, { event: e, info: tmp[b].id, group: inGroups[0] });
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Helper function for getting the best match from the list of drag
|
|
|
* and drop objects returned by the drag and drop events when we are
|
|
|
* in INTERSECT mode. It returns either the first object that the
|
|
|
* cursor is over, or the object that has the greatest overlap with
|
|
|
* the dragged element.
|
|
|
* @method getBestMatch
|
|
|
* @param {DragDrop[]} dds The array of drag and drop objects
|
|
|
* targeted
|
|
|
* @return {DragDrop} The best single match
|
|
|
* @static
|
|
|
*/
|
|
|
getBestMatch: function(dds) {
|
|
|
var winner = null;
|
|
|
|
|
|
var len = dds.length;
|
|
|
|
|
|
if (len == 1) {
|
|
|
winner = dds[0];
|
|
|
} else {
|
|
|
// Loop through the targeted items
|
|
|
for (var i=0; i<len; ++i) {
|
|
|
var dd = dds[i];
|
|
|
// If the cursor is over the object, it wins. If the
|
|
|
// cursor is over multiple matches, the first one we come
|
|
|
// to wins.
|
|
|
if (this.mode == this.INTERSECT && dd.cursorIsOver) {
|
|
|
winner = dd;
|
|
|
break;
|
|
|
// Otherwise the object with the most overlap wins
|
|
|
} else {
|
|
|
if (!winner || !winner.overlap || (dd.overlap &&
|
|
|
winner.overlap.getArea() < dd.overlap.getArea())) {
|
|
|
winner = dd;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return winner;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Refreshes the cache of the top-left and bottom-right points of the
|
|
|
* drag and drop objects in the specified group(s). This is in the
|
|
|
* format that is stored in the drag and drop instance, so typical
|
|
|
* usage is:
|
|
|
* <code>
|
|
|
* YAHOO.util.DragDropMgr.refreshCache(ddinstance.groups);
|
|
|
* </code>
|
|
|
* Alternatively:
|
|
|
* <code>
|
|
|
* YAHOO.util.DragDropMgr.refreshCache({group1:true, group2:true});
|
|
|
* </code>
|
|
|
* @TODO this really should be an indexed array. Alternatively this
|
|
|
* method could accept both.
|
|
|
* @method refreshCache
|
|
|
* @param {Object} groups an associative array of groups to refresh
|
|
|
* @static
|
|
|
*/
|
|
|
refreshCache: function(groups) {
|
|
|
|
|
|
// refresh everything if group array is not provided
|
|
|
var g = groups || this.ids;
|
|
|
|
|
|
for (var sGroup in g) {
|
|
|
if ("string" != typeof sGroup) {
|
|
|
continue;
|
|
|
}
|
|
|
for (var i in this.ids[sGroup]) {
|
|
|
var oDD = this.ids[sGroup][i];
|
|
|
|
|
|
if (this.isTypeOfDD(oDD)) {
|
|
|
var loc = this.getLocation(oDD);
|
|
|
if (loc) {
|
|
|
this.locationCache[oDD.id] = loc;
|
|
|
} else {
|
|
|
delete this.locationCache[oDD.id];
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* This checks to make sure an element exists and is in the DOM. The
|
|
|
* main purpose is to handle cases where innerHTML is used to remove
|
|
|
* drag and drop objects from the DOM. IE provides an 'unspecified
|
|
|
* error' when trying to access the offsetParent of such an element
|
|
|
* @method verifyEl
|
|
|
* @param {HTMLElement} el the element to check
|
|
|
* @return {boolean} true if the element looks usable
|
|
|
* @static
|
|
|
*/
|
|
|
verifyEl: function(el) {
|
|
|
try {
|
|
|
if (el) {
|
|
|
var parent = el.offsetParent;
|
|
|
if (parent) {
|
|
|
return true;
|
|
|
}
|
|
|
}
|
|
|
} catch(e) {
|
|
|
}
|
|
|
|
|
|
return false;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns a Region object containing the drag and drop element's position
|
|
|
* and size, including the padding configured for it
|
|
|
* @method getLocation
|
|
|
* @param {DragDrop} oDD the drag and drop object to get the
|
|
|
* location for
|
|
|
* @return {YAHOO.util.Region} a Region object representing the total area
|
|
|
* the element occupies, including any padding
|
|
|
* the instance is configured for.
|
|
|
* @static
|
|
|
*/
|
|
|
getLocation: function(oDD) {
|
|
|
if (! this.isTypeOfDD(oDD)) {
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
var el = oDD.getEl(), pos, x1, x2, y1, y2, t, r, b, l;
|
|
|
|
|
|
try {
|
|
|
pos= YAHOO.util.Dom.getXY(el);
|
|
|
} catch (e) { }
|
|
|
|
|
|
if (!pos) {
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
x1 = pos[0];
|
|
|
x2 = x1 + el.offsetWidth;
|
|
|
y1 = pos[1];
|
|
|
y2 = y1 + el.offsetHeight;
|
|
|
|
|
|
t = y1 - oDD.padding[0];
|
|
|
r = x2 + oDD.padding[1];
|
|
|
b = y2 + oDD.padding[2];
|
|
|
l = x1 - oDD.padding[3];
|
|
|
|
|
|
return new YAHOO.util.Region( t, r, b, l );
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Checks the cursor location to see if it over the target
|
|
|
* @method isOverTarget
|
|
|
* @param {YAHOO.util.Point} pt The point to evaluate
|
|
|
* @param {DragDrop} oTarget the DragDrop object we are inspecting
|
|
|
* @param {boolean} intersect true if we are in intersect mode
|
|
|
* @param {YAHOO.util.Region} pre-cached location of the dragged element
|
|
|
* @return {boolean} true if the mouse is over the target
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
isOverTarget: function(pt, oTarget, intersect, curRegion) {
|
|
|
// use cache if available
|
|
|
var loc = this.locationCache[oTarget.id];
|
|
|
if (!loc || !this.useCache) {
|
|
|
loc = this.getLocation(oTarget);
|
|
|
this.locationCache[oTarget.id] = loc;
|
|
|
|
|
|
}
|
|
|
|
|
|
if (!loc) {
|
|
|
return false;
|
|
|
}
|
|
|
|
|
|
oTarget.cursorIsOver = loc.contains( pt );
|
|
|
|
|
|
// DragDrop is using this as a sanity check for the initial mousedown
|
|
|
// in this case we are done. In POINT mode, if the drag obj has no
|
|
|
// contraints, we are done. Otherwise we need to evaluate the
|
|
|
// region the target as occupies to determine if the dragged element
|
|
|
// overlaps with it.
|
|
|
|
|
|
var dc = this.dragCurrent;
|
|
|
if (!dc || (!intersect && !dc.constrainX && !dc.constrainY)) {
|
|
|
|
|
|
//if (oTarget.cursorIsOver) {
|
|
|
//}
|
|
|
return oTarget.cursorIsOver;
|
|
|
}
|
|
|
|
|
|
oTarget.overlap = null;
|
|
|
|
|
|
|
|
|
// Get the current location of the drag element, this is the
|
|
|
// location of the mouse event less the delta that represents
|
|
|
// where the original mousedown happened on the element. We
|
|
|
// need to consider constraints and ticks as well.
|
|
|
|
|
|
if (!curRegion) {
|
|
|
var pos = dc.getTargetCoord(pt.x, pt.y);
|
|
|
var el = dc.getDragEl();
|
|
|
curRegion = new YAHOO.util.Region( pos.y,
|
|
|
pos.x + el.offsetWidth,
|
|
|
pos.y + el.offsetHeight,
|
|
|
pos.x );
|
|
|
}
|
|
|
|
|
|
var overlap = curRegion.intersect(loc);
|
|
|
|
|
|
if (overlap) {
|
|
|
oTarget.overlap = overlap;
|
|
|
return (intersect) ? true : oTarget.cursorIsOver;
|
|
|
} else {
|
|
|
return false;
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* unload event handler
|
|
|
* @method _onUnload
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
_onUnload: function(e, me) {
|
|
|
this.unregAll();
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Cleans up the drag and drop events and objects.
|
|
|
* @method unregAll
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
unregAll: function() {
|
|
|
|
|
|
if (this.dragCurrent) {
|
|
|
this.stopDrag();
|
|
|
this.dragCurrent = null;
|
|
|
}
|
|
|
|
|
|
this._execOnAll("unreg", []);
|
|
|
|
|
|
//for (var i in this.elementCache) {
|
|
|
//delete this.elementCache[i];
|
|
|
//}
|
|
|
//this.elementCache = {};
|
|
|
|
|
|
this.ids = {};
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* A cache of DOM elements
|
|
|
* @property elementCache
|
|
|
* @private
|
|
|
* @static
|
|
|
* @deprecated elements are not cached now
|
|
|
*/
|
|
|
elementCache: {},
|
|
|
|
|
|
/**
|
|
|
* Get the wrapper for the DOM element specified
|
|
|
* @method getElWrapper
|
|
|
* @param {String} id the id of the element to get
|
|
|
* @return {YAHOO.util.DDM.ElementWrapper} the wrapped element
|
|
|
* @private
|
|
|
* @deprecated This wrapper isn't that useful
|
|
|
* @static
|
|
|
*/
|
|
|
getElWrapper: function(id) {
|
|
|
var oWrapper = this.elementCache[id];
|
|
|
if (!oWrapper || !oWrapper.el) {
|
|
|
oWrapper = this.elementCache[id] =
|
|
|
new this.ElementWrapper(YAHOO.util.Dom.get(id));
|
|
|
}
|
|
|
return oWrapper;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns the actual DOM element
|
|
|
* @method getElement
|
|
|
* @param {String} id the id of the elment to get
|
|
|
* @return {Object} The element
|
|
|
* @deprecated use YAHOO.util.Dom.get instead
|
|
|
* @static
|
|
|
*/
|
|
|
getElement: function(id) {
|
|
|
return YAHOO.util.Dom.get(id);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns the style property for the DOM element (i.e.,
|
|
|
* document.getElById(id).style)
|
|
|
* @method getCss
|
|
|
* @param {String} id the id of the elment to get
|
|
|
* @return {Object} The style property of the element
|
|
|
* @deprecated use YAHOO.util.Dom instead
|
|
|
* @static
|
|
|
*/
|
|
|
getCss: function(id) {
|
|
|
var el = YAHOO.util.Dom.get(id);
|
|
|
return (el) ? el.style : null;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Inner class for cached elements
|
|
|
* @class DragDropMgr.ElementWrapper
|
|
|
* @for DragDropMgr
|
|
|
* @private
|
|
|
* @deprecated
|
|
|
*/
|
|
|
ElementWrapper: function(el) {
|
|
|
/**
|
|
|
* The element
|
|
|
* @property el
|
|
|
*/
|
|
|
this.el = el || null;
|
|
|
/**
|
|
|
* The element id
|
|
|
* @property id
|
|
|
*/
|
|
|
this.id = this.el && el.id;
|
|
|
/**
|
|
|
* A reference to the style property
|
|
|
* @property css
|
|
|
*/
|
|
|
this.css = this.el && el.style;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns the X position of an html element
|
|
|
* @method getPosX
|
|
|
* @param el the element for which to get the position
|
|
|
* @return {int} the X coordinate
|
|
|
* @for DragDropMgr
|
|
|
* @deprecated use YAHOO.util.Dom.getX instead
|
|
|
* @static
|
|
|
*/
|
|
|
getPosX: function(el) {
|
|
|
return YAHOO.util.Dom.getX(el);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns the Y position of an html element
|
|
|
* @method getPosY
|
|
|
* @param el the element for which to get the position
|
|
|
* @return {int} the Y coordinate
|
|
|
* @deprecated use YAHOO.util.Dom.getY instead
|
|
|
* @static
|
|
|
*/
|
|
|
getPosY: function(el) {
|
|
|
return YAHOO.util.Dom.getY(el);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Swap two nodes. In IE, we use the native method, for others we
|
|
|
* emulate the IE behavior
|
|
|
* @method swapNode
|
|
|
* @param n1 the first node to swap
|
|
|
* @param n2 the other node to swap
|
|
|
* @static
|
|
|
*/
|
|
|
swapNode: function(n1, n2) {
|
|
|
if (n1.swapNode) {
|
|
|
n1.swapNode(n2);
|
|
|
} else {
|
|
|
var p = n2.parentNode;
|
|
|
var s = n2.nextSibling;
|
|
|
|
|
|
if (s == n1) {
|
|
|
p.insertBefore(n1, n2);
|
|
|
} else if (n2 == n1.nextSibling) {
|
|
|
p.insertBefore(n2, n1);
|
|
|
} else {
|
|
|
n1.parentNode.replaceChild(n2, n1);
|
|
|
p.insertBefore(n1, s);
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns the current scroll position
|
|
|
* @method getScroll
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
getScroll: function () {
|
|
|
var t, l, dde=document.documentElement, db=document.body;
|
|
|
if (dde && (dde.scrollTop || dde.scrollLeft)) {
|
|
|
t = dde.scrollTop;
|
|
|
l = dde.scrollLeft;
|
|
|
} else if (db) {
|
|
|
t = db.scrollTop;
|
|
|
l = db.scrollLeft;
|
|
|
} else {
|
|
|
}
|
|
|
return { top: t, left: l };
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns the specified element style property
|
|
|
* @method getStyle
|
|
|
* @param {HTMLElement} el the element
|
|
|
* @param {string} styleProp the style property
|
|
|
* @return {string} The value of the style property
|
|
|
* @deprecated use YAHOO.util.Dom.getStyle
|
|
|
* @static
|
|
|
*/
|
|
|
getStyle: function(el, styleProp) {
|
|
|
return YAHOO.util.Dom.getStyle(el, styleProp);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Gets the scrollTop
|
|
|
* @method getScrollTop
|
|
|
* @return {int} the document's scrollTop
|
|
|
* @static
|
|
|
*/
|
|
|
getScrollTop: function () { return this.getScroll().top; },
|
|
|
|
|
|
/**
|
|
|
* Gets the scrollLeft
|
|
|
* @method getScrollLeft
|
|
|
* @return {int} the document's scrollTop
|
|
|
* @static
|
|
|
*/
|
|
|
getScrollLeft: function () { return this.getScroll().left; },
|
|
|
|
|
|
/**
|
|
|
* Sets the x/y position of an element to the location of the
|
|
|
* target element.
|
|
|
* @method moveToEl
|
|
|
* @param {HTMLElement} moveEl The element to move
|
|
|
* @param {HTMLElement} targetEl The position reference element
|
|
|
* @static
|
|
|
*/
|
|
|
moveToEl: function (moveEl, targetEl) {
|
|
|
var aCoord = YAHOO.util.Dom.getXY(targetEl);
|
|
|
YAHOO.util.Dom.setXY(moveEl, aCoord);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Gets the client height
|
|
|
* @method getClientHeight
|
|
|
* @return {int} client height in px
|
|
|
* @deprecated use YAHOO.util.Dom.getViewportHeight instead
|
|
|
* @static
|
|
|
*/
|
|
|
getClientHeight: function() {
|
|
|
return YAHOO.util.Dom.getViewportHeight();
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Gets the client width
|
|
|
* @method getClientWidth
|
|
|
* @return {int} client width in px
|
|
|
* @deprecated use YAHOO.util.Dom.getViewportWidth instead
|
|
|
* @static
|
|
|
*/
|
|
|
getClientWidth: function() {
|
|
|
return YAHOO.util.Dom.getViewportWidth();
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Numeric array sort function
|
|
|
* @method numericSort
|
|
|
* @static
|
|
|
*/
|
|
|
numericSort: function(a, b) { return (a - b); },
|
|
|
|
|
|
/**
|
|
|
* Internal counter
|
|
|
* @property _timeoutCount
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
_timeoutCount: 0,
|
|
|
|
|
|
/**
|
|
|
* Trying to make the load order less important. Without this we get
|
|
|
* an error if this file is loaded before the Event Utility.
|
|
|
* @method _addListeners
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
_addListeners: function() {
|
|
|
var DDM = YAHOO.util.DDM;
|
|
|
if ( YAHOO.util.Event && document ) {
|
|
|
DDM._onLoad();
|
|
|
} else {
|
|
|
if (DDM._timeoutCount > 2000) {
|
|
|
} else {
|
|
|
setTimeout(DDM._addListeners, 10);
|
|
|
if (document && document.body) {
|
|
|
DDM._timeoutCount += 1;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Recursively searches the immediate parent and all child nodes for
|
|
|
* the handle element in order to determine wheter or not it was
|
|
|
* clicked.
|
|
|
* @method handleWasClicked
|
|
|
* @param node the html element to inspect
|
|
|
* @static
|
|
|
*/
|
|
|
handleWasClicked: function(node, id) {
|
|
|
if (this.isHandle(id, node.id)) {
|
|
|
return true;
|
|
|
} else {
|
|
|
// check to see if this is a text node child of the one we want
|
|
|
var p = node.parentNode;
|
|
|
|
|
|
while (p) {
|
|
|
if (this.isHandle(id, p.id)) {
|
|
|
return true;
|
|
|
} else {
|
|
|
p = p.parentNode;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return false;
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
}();
|
|
|
|
|
|
// shorter alias, save a few bytes
|
|
|
YAHOO.util.DDM = YAHOO.util.DragDropMgr;
|
|
|
YAHOO.util.DDM._addListeners();
|
|
|
|
|
|
}
|
|
|
|
|
|
(function() {
|
|
|
|
|
|
var Event=YAHOO.util.Event;
|
|
|
var Dom=YAHOO.util.Dom;
|
|
|
|
|
|
/**
|
|
|
* Defines the interface and base operation of items that that can be
|
|
|
* dragged or can be drop targets. It was designed to be extended, overriding
|
|
|
* the event handlers for startDrag, onDrag, onDragOver, onDragOut.
|
|
|
* Up to three html elements can be associated with a DragDrop instance:
|
|
|
* <ul>
|
|
|
* <li>linked element: the element that is passed into the constructor.
|
|
|
* This is the element which defines the boundaries for interaction with
|
|
|
* other DragDrop objects.</li>
|
|
|
* <li>handle element(s): The drag operation only occurs if the element that
|
|
|
* was clicked matches a handle element. By default this is the linked
|
|
|
* element, but there are times that you will want only a portion of the
|
|
|
* linked element to initiate the drag operation, and the setHandleElId()
|
|
|
* method provides a way to define this.</li>
|
|
|
* <li>drag element: this represents an the element that would be moved along
|
|
|
* with the cursor during a drag operation. By default, this is the linked
|
|
|
* element itself as in {@link YAHOO.util.DD}. setDragElId() lets you define
|
|
|
* a separate element that would be moved, as in {@link YAHOO.util.DDProxy}
|
|
|
* </li>
|
|
|
* </ul>
|
|
|
* This class should not be instantiated until the onload event to ensure that
|
|
|
* the associated elements are available.
|
|
|
* The following would define a DragDrop obj that would interact with any
|
|
|
* other DragDrop obj in the "group1" group:
|
|
|
* <pre>
|
|
|
* dd = new YAHOO.util.DragDrop("div1", "group1");
|
|
|
* </pre>
|
|
|
* Since none of the event handlers have been implemented, nothing would
|
|
|
* actually happen if you were to run the code above. Normally you would
|
|
|
* override this class or one of the default implementations, but you can
|
|
|
* also override the methods you want on an instance of the class...
|
|
|
* <pre>
|
|
|
* dd.onDragDrop = function(e, id) {
|
|
|
* alert("dd was dropped on " + id);
|
|
|
* }
|
|
|
* </pre>
|
|
|
* @namespace YAHOO.util
|
|
|
* @class DragDrop
|
|
|
* @constructor
|
|
|
* @param {String} id of the element that is linked to this instance
|
|
|
* @param {String} sGroup the group of related DragDrop objects
|
|
|
* @param {object} config an object containing configurable attributes
|
|
|
* Valid properties for DragDrop:
|
|
|
* padding, isTarget, maintainOffset, primaryButtonOnly,
|
|
|
*/
|
|
|
YAHOO.util.DragDrop = function(id, sGroup, config) {
|
|
|
if (id) {
|
|
|
this.init(id, sGroup, config);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
YAHOO.util.DragDrop.prototype = {
|
|
|
/**
|
|
|
* An Object Literal containing the events that we will be using: mouseDown, b4MouseDown, mouseUp, b4StartDrag, startDrag, b4EndDrag, endDrag, mouseUp, drag, b4Drag, invalidDrop, b4DragOut, dragOut, dragEnter, b4DragOver, dragOver, b4DragDrop, dragDrop
|
|
|
* By setting any of these to false, then event will not be fired.
|
|
|
* @property events
|
|
|
* @type object
|
|
|
*/
|
|
|
events: null,
|
|
|
/**
|
|
|
* @method on
|
|
|
* @description Shortcut for EventProvider.subscribe, see <a href="YAHOO.util.EventProvider.html#subscribe">YAHOO.util.EventProvider.subscribe</a>
|
|
|
*/
|
|
|
on: function() {
|
|
|
this.subscribe.apply(this, arguments);
|
|
|
},
|
|
|
/**
|
|
|
* The id of the element associated with this object. This is what we
|
|
|
* refer to as the "linked element" because the size and position of
|
|
|
* this element is used to determine when the drag and drop objects have
|
|
|
* interacted.
|
|
|
* @property id
|
|
|
* @type String
|
|
|
*/
|
|
|
id: null,
|
|
|
|
|
|
/**
|
|
|
* Configuration attributes passed into the constructor
|
|
|
* @property config
|
|
|
* @type object
|
|
|
*/
|
|
|
config: null,
|
|
|
|
|
|
/**
|
|
|
* The id of the element that will be dragged. By default this is same
|
|
|
* as the linked element , but could be changed to another element. Ex:
|
|
|
* YAHOO.util.DDProxy
|
|
|
* @property dragElId
|
|
|
* @type String
|
|
|
* @private
|
|
|
*/
|
|
|
dragElId: null,
|
|
|
|
|
|
/**
|
|
|
* the id of the element that initiates the drag operation. By default
|
|
|
* this is the linked element, but could be changed to be a child of this
|
|
|
* element. This lets us do things like only starting the drag when the
|
|
|
* header element within the linked html element is clicked.
|
|
|
* @property handleElId
|
|
|
* @type String
|
|
|
* @private
|
|
|
*/
|
|
|
handleElId: null,
|
|
|
|
|
|
/**
|
|
|
* An associative array of HTML tags that will be ignored if clicked.
|
|
|
* @property invalidHandleTypes
|
|
|
* @type {string: string}
|
|
|
*/
|
|
|
invalidHandleTypes: null,
|
|
|
|
|
|
/**
|
|
|
* An associative array of ids for elements that will be ignored if clicked
|
|
|
* @property invalidHandleIds
|
|
|
* @type {string: string}
|
|
|
*/
|
|
|
invalidHandleIds: null,
|
|
|
|
|
|
/**
|
|
|
* An indexted array of css class names for elements that will be ignored
|
|
|
* if clicked.
|
|
|
* @property invalidHandleClasses
|
|
|
* @type string[]
|
|
|
*/
|
|
|
invalidHandleClasses: null,
|
|
|
|
|
|
/**
|
|
|
* The linked element's absolute X position at the time the drag was
|
|
|
* started
|
|
|
* @property startPageX
|
|
|
* @type int
|
|
|
* @private
|
|
|
*/
|
|
|
startPageX: 0,
|
|
|
|
|
|
/**
|
|
|
* The linked element's absolute X position at the time the drag was
|
|
|
* started
|
|
|
* @property startPageY
|
|
|
* @type int
|
|
|
* @private
|
|
|
*/
|
|
|
startPageY: 0,
|
|
|
|
|
|
/**
|
|
|
* The group defines a logical collection of DragDrop objects that are
|
|
|
* related. Instances only get events when interacting with other
|
|
|
* DragDrop object in the same group. This lets us define multiple
|
|
|
* groups using a single DragDrop subclass if we want.
|
|
|
* @property groups
|
|
|
* @type {string: string}
|
|
|
*/
|
|
|
groups: null,
|
|
|
|
|
|
/**
|
|
|
* Individual drag/drop instances can be locked. This will prevent
|
|
|
* onmousedown start drag.
|
|
|
* @property locked
|
|
|
* @type boolean
|
|
|
* @private
|
|
|
*/
|
|
|
locked: false,
|
|
|
|
|
|
/**
|
|
|
* Lock this instance
|
|
|
* @method lock
|
|
|
*/
|
|
|
lock: function() { this.locked = true; },
|
|
|
|
|
|
/**
|
|
|
* Unlock this instace
|
|
|
* @method unlock
|
|
|
*/
|
|
|
unlock: function() { this.locked = false; },
|
|
|
|
|
|
/**
|
|
|
* By default, all instances can be a drop target. This can be disabled by
|
|
|
* setting isTarget to false.
|
|
|
* @property isTarget
|
|
|
* @type boolean
|
|
|
*/
|
|
|
isTarget: true,
|
|
|
|
|
|
/**
|
|
|
* The padding configured for this drag and drop object for calculating
|
|
|
* the drop zone intersection with this object.
|
|
|
* @property padding
|
|
|
* @type int[]
|
|
|
*/
|
|
|
padding: null,
|
|
|
/**
|
|
|
* If this flag is true, do not fire drop events. The element is a drag only element (for movement not dropping)
|
|
|
* @property dragOnly
|
|
|
* @type Boolean
|
|
|
*/
|
|
|
dragOnly: false,
|
|
|
|
|
|
/**
|
|
|
* If this flag is true, a shim will be placed over the screen/viewable area to track mouse events. Should help with dragging elements over iframes and other controls.
|
|
|
* @property useShim
|
|
|
* @type Boolean
|
|
|
*/
|
|
|
useShim: false,
|
|
|
|
|
|
/**
|
|
|
* Cached reference to the linked element
|
|
|
* @property _domRef
|
|
|
* @private
|
|
|
*/
|
|
|
_domRef: null,
|
|
|
|
|
|
/**
|
|
|
* Internal typeof flag
|
|
|
* @property __ygDragDrop
|
|
|
* @private
|
|
|
*/
|
|
|
__ygDragDrop: true,
|
|
|
|
|
|
/**
|
|
|
* Set to true when horizontal contraints are applied
|
|
|
* @property constrainX
|
|
|
* @type boolean
|
|
|
* @private
|
|
|
*/
|
|
|
constrainX: false,
|
|
|
|
|
|
/**
|
|
|
* Set to true when vertical contraints are applied
|
|
|
* @property constrainY
|
|
|
* @type boolean
|
|
|
* @private
|
|
|
*/
|
|
|
constrainY: false,
|
|
|
|
|
|
/**
|
|
|
* The left constraint
|
|
|
* @property minX
|
|
|
* @type int
|
|
|
* @private
|
|
|
*/
|
|
|
minX: 0,
|
|
|
|
|
|
/**
|
|
|
* The right constraint
|
|
|
* @property maxX
|
|
|
* @type int
|
|
|
* @private
|
|
|
*/
|
|
|
maxX: 0,
|
|
|
|
|
|
/**
|
|
|
* The up constraint
|
|
|
* @property minY
|
|
|
* @type int
|
|
|
* @type int
|
|
|
* @private
|
|
|
*/
|
|
|
minY: 0,
|
|
|
|
|
|
/**
|
|
|
* The down constraint
|
|
|
* @property maxY
|
|
|
* @type int
|
|
|
* @private
|
|
|
*/
|
|
|
maxY: 0,
|
|
|
|
|
|
/**
|
|
|
* The difference between the click position and the source element's location
|
|
|
* @property deltaX
|
|
|
* @type int
|
|
|
* @private
|
|
|
*/
|
|
|
deltaX: 0,
|
|
|
|
|
|
/**
|
|
|
* The difference between the click position and the source element's location
|
|
|
* @property deltaY
|
|
|
* @type int
|
|
|
* @private
|
|
|
*/
|
|
|
deltaY: 0,
|
|
|
|
|
|
/**
|
|
|
* Maintain offsets when we resetconstraints. Set to true when you want
|
|
|
* the position of the element relative to its parent to stay the same
|
|
|
* when the page changes
|
|
|
*
|
|
|
* @property maintainOffset
|
|
|
* @type boolean
|
|
|
*/
|
|
|
maintainOffset: false,
|
|
|
|
|
|
/**
|
|
|
* Array of pixel locations the element will snap to if we specified a
|
|
|
* horizontal graduation/interval. This array is generated automatically
|
|
|
* when you define a tick interval.
|
|
|
* @property xTicks
|
|
|
* @type int[]
|
|
|
*/
|
|
|
xTicks: null,
|
|
|
|
|
|
/**
|
|
|
* Array of pixel locations the element will snap to if we specified a
|
|
|
* vertical graduation/interval. This array is generated automatically
|
|
|
* when you define a tick interval.
|
|
|
* @property yTicks
|
|
|
* @type int[]
|
|
|
*/
|
|
|
yTicks: null,
|
|
|
|
|
|
/**
|
|
|
* By default the drag and drop instance will only respond to the primary
|
|
|
* button click (left button for a right-handed mouse). Set to true to
|
|
|
* allow drag and drop to start with any mouse click that is propogated
|
|
|
* by the browser
|
|
|
* @property primaryButtonOnly
|
|
|
* @type boolean
|
|
|
*/
|
|
|
primaryButtonOnly: true,
|
|
|
|
|
|
/**
|
|
|
* The availabe property is false until the linked dom element is accessible.
|
|
|
* @property available
|
|
|
* @type boolean
|
|
|
*/
|
|
|
available: false,
|
|
|
|
|
|
/**
|
|
|
* By default, drags can only be initiated if the mousedown occurs in the
|
|
|
* region the linked element is. This is done in part to work around a
|
|
|
* bug in some browsers that mis-report the mousedown if the previous
|
|
|
* mouseup happened outside of the window. This property is set to true
|
|
|
* if outer handles are defined.
|
|
|
*
|
|
|
* @property hasOuterHandles
|
|
|
* @type boolean
|
|
|
* @default false
|
|
|
*/
|
|
|
hasOuterHandles: false,
|
|
|
|
|
|
/**
|
|
|
* Property that is assigned to a drag and drop object when testing to
|
|
|
* see if it is being targeted by another dd object. This property
|
|
|
* can be used in intersect mode to help determine the focus of
|
|
|
* the mouse interaction. DDM.getBestMatch uses this property first to
|
|
|
* determine the closest match in INTERSECT mode when multiple targets
|
|
|
* are part of the same interaction.
|
|
|
* @property cursorIsOver
|
|
|
* @type boolean
|
|
|
*/
|
|
|
cursorIsOver: false,
|
|
|
|
|
|
/**
|
|
|
* Property that is assigned to a drag and drop object when testing to
|
|
|
* see if it is being targeted by another dd object. This is a region
|
|
|
* that represents the area the draggable element overlaps this target.
|
|
|
* DDM.getBestMatch uses this property to compare the size of the overlap
|
|
|
* to that of other targets in order to determine the closest match in
|
|
|
* INTERSECT mode when multiple targets are part of the same interaction.
|
|
|
* @property overlap
|
|
|
* @type YAHOO.util.Region
|
|
|
*/
|
|
|
overlap: null,
|
|
|
|
|
|
/**
|
|
|
* Code that executes immediately before the startDrag event
|
|
|
* @method b4StartDrag
|
|
|
* @private
|
|
|
*/
|
|
|
b4StartDrag: function(x, y) { },
|
|
|
|
|
|
/**
|
|
|
* Abstract method called after a drag/drop object is clicked
|
|
|
* and the drag or mousedown time thresholds have beeen met.
|
|
|
* @method startDrag
|
|
|
* @param {int} X click location
|
|
|
* @param {int} Y click location
|
|
|
*/
|
|
|
startDrag: function(x, y) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Code that executes immediately before the onDrag event
|
|
|
* @method b4Drag
|
|
|
* @private
|
|
|
*/
|
|
|
b4Drag: function(e) { },
|
|
|
|
|
|
/**
|
|
|
* Abstract method called during the onMouseMove event while dragging an
|
|
|
* object.
|
|
|
* @method onDrag
|
|
|
* @param {Event} e the mousemove event
|
|
|
*/
|
|
|
onDrag: function(e) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Abstract method called when this element fist begins hovering over
|
|
|
* another DragDrop obj
|
|
|
* @method onDragEnter
|
|
|
* @param {Event} e the mousemove event
|
|
|
* @param {String|DragDrop[]} id In POINT mode, the element
|
|
|
* id this is hovering over. In INTERSECT mode, an array of one or more
|
|
|
* dragdrop items being hovered over.
|
|
|
*/
|
|
|
onDragEnter: function(e, id) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Code that executes immediately before the onDragOver event
|
|
|
* @method b4DragOver
|
|
|
* @private
|
|
|
*/
|
|
|
b4DragOver: function(e) { },
|
|
|
|
|
|
/**
|
|
|
* Abstract method called when this element is hovering over another
|
|
|
* DragDrop obj
|
|
|
* @method onDragOver
|
|
|
* @param {Event} e the mousemove event
|
|
|
* @param {String|DragDrop[]} id In POINT mode, the element
|
|
|
* id this is hovering over. In INTERSECT mode, an array of dd items
|
|
|
* being hovered over.
|
|
|
*/
|
|
|
onDragOver: function(e, id) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Code that executes immediately before the onDragOut event
|
|
|
* @method b4DragOut
|
|
|
* @private
|
|
|
*/
|
|
|
b4DragOut: function(e) { },
|
|
|
|
|
|
/**
|
|
|
* Abstract method called when we are no longer hovering over an element
|
|
|
* @method onDragOut
|
|
|
* @param {Event} e the mousemove event
|
|
|
* @param {String|DragDrop[]} id In POINT mode, the element
|
|
|
* id this was hovering over. In INTERSECT mode, an array of dd items
|
|
|
* that the mouse is no longer over.
|
|
|
*/
|
|
|
onDragOut: function(e, id) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Code that executes immediately before the onDragDrop event
|
|
|
* @method b4DragDrop
|
|
|
* @private
|
|
|
*/
|
|
|
b4DragDrop: function(e) { },
|
|
|
|
|
|
/**
|
|
|
* Abstract method called when this item is dropped on another DragDrop
|
|
|
* obj
|
|
|
* @method onDragDrop
|
|
|
* @param {Event} e the mouseup event
|
|
|
* @param {String|DragDrop[]} id In POINT mode, the element
|
|
|
* id this was dropped on. In INTERSECT mode, an array of dd items this
|
|
|
* was dropped on.
|
|
|
*/
|
|
|
onDragDrop: function(e, id) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Abstract method called when this item is dropped on an area with no
|
|
|
* drop target
|
|
|
* @method onInvalidDrop
|
|
|
* @param {Event} e the mouseup event
|
|
|
*/
|
|
|
onInvalidDrop: function(e) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Code that executes immediately before the endDrag event
|
|
|
* @method b4EndDrag
|
|
|
* @private
|
|
|
*/
|
|
|
b4EndDrag: function(e) { },
|
|
|
|
|
|
/**
|
|
|
* Fired when we are done dragging the object
|
|
|
* @method endDrag
|
|
|
* @param {Event} e the mouseup event
|
|
|
*/
|
|
|
endDrag: function(e) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Code executed immediately before the onMouseDown event
|
|
|
* @method b4MouseDown
|
|
|
* @param {Event} e the mousedown event
|
|
|
* @private
|
|
|
*/
|
|
|
b4MouseDown: function(e) { },
|
|
|
|
|
|
/**
|
|
|
* Event handler that fires when a drag/drop obj gets a mousedown
|
|
|
* @method onMouseDown
|
|
|
* @param {Event} e the mousedown event
|
|
|
*/
|
|
|
onMouseDown: function(e) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Event handler that fires when a drag/drop obj gets a mouseup
|
|
|
* @method onMouseUp
|
|
|
* @param {Event} e the mouseup event
|
|
|
*/
|
|
|
onMouseUp: function(e) { /* override this */ },
|
|
|
|
|
|
/**
|
|
|
* Override the onAvailable method to do what is needed after the initial
|
|
|
* position was determined.
|
|
|
* @method onAvailable
|
|
|
*/
|
|
|
onAvailable: function () {
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns a reference to the linked element
|
|
|
* @method getEl
|
|
|
* @return {HTMLElement} the html element
|
|
|
*/
|
|
|
getEl: function() {
|
|
|
if (!this._domRef) {
|
|
|
this._domRef = Dom.get(this.id);
|
|
|
}
|
|
|
|
|
|
return this._domRef;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns a reference to the actual element to drag. By default this is
|
|
|
* the same as the html element, but it can be assigned to another
|
|
|
* element. An example of this can be found in YAHOO.util.DDProxy
|
|
|
* @method getDragEl
|
|
|
* @return {HTMLElement} the html element
|
|
|
*/
|
|
|
getDragEl: function() {
|
|
|
return Dom.get(this.dragElId);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Sets up the DragDrop object. Must be called in the constructor of any
|
|
|
* YAHOO.util.DragDrop subclass
|
|
|
* @method init
|
|
|
* @param id the id of the linked element
|
|
|
* @param {String} sGroup the group of related items
|
|
|
* @param {object} config configuration attributes
|
|
|
*/
|
|
|
init: function(id, sGroup, config) {
|
|
|
this.initTarget(id, sGroup, config);
|
|
|
Event.on(this._domRef || this.id, "mousedown",
|
|
|
this.handleMouseDown, this, true);
|
|
|
|
|
|
// Event.on(this.id, "selectstart", Event.preventDefault);
|
|
|
for (var i in this.events) {
|
|
|
this.createEvent(i + 'Event');
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Initializes Targeting functionality only... the object does not
|
|
|
* get a mousedown handler.
|
|
|
* @method initTarget
|
|
|
* @param id the id of the linked element
|
|
|
* @param {String} sGroup the group of related items
|
|
|
* @param {object} config configuration attributes
|
|
|
*/
|
|
|
initTarget: function(id, sGroup, config) {
|
|
|
|
|
|
// configuration attributes
|
|
|
this.config = config || {};
|
|
|
|
|
|
this.events = {};
|
|
|
|
|
|
// create a local reference to the drag and drop manager
|
|
|
this.DDM = YAHOO.util.DDM;
|
|
|
|
|
|
// initialize the groups object
|
|
|
this.groups = {};
|
|
|
|
|
|
// assume that we have an element reference instead of an id if the
|
|
|
// parameter is not a string
|
|
|
if (typeof id !== "string") {
|
|
|
this._domRef = id;
|
|
|
id = Dom.generateId(id);
|
|
|
}
|
|
|
|
|
|
// set the id
|
|
|
this.id = id;
|
|
|
|
|
|
// add to an interaction group
|
|
|
this.addToGroup((sGroup) ? sGroup : "default");
|
|
|
|
|
|
// We don't want to register this as the handle with the manager
|
|
|
// so we just set the id rather than calling the setter.
|
|
|
this.handleElId = id;
|
|
|
|
|
|
Event.onAvailable(id, this.handleOnAvailable, this, true);
|
|
|
|
|
|
|
|
|
// the linked element is the element that gets dragged by default
|
|
|
this.setDragElId(id);
|
|
|
|
|
|
// by default, clicked anchors will not start drag operations.
|
|
|
// @TODO what else should be here? Probably form fields.
|
|
|
this.invalidHandleTypes = { A: "A" };
|
|
|
this.invalidHandleIds = {};
|
|
|
this.invalidHandleClasses = [];
|
|
|
|
|
|
this.applyConfig();
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Applies the configuration parameters that were passed into the constructor.
|
|
|
* This is supposed to happen at each level through the inheritance chain. So
|
|
|
* a DDProxy implentation will execute apply config on DDProxy, DD, and
|
|
|
* DragDrop in order to get all of the parameters that are available in
|
|
|
* each object.
|
|
|
* @method applyConfig
|
|
|
*/
|
|
|
applyConfig: function() {
|
|
|
this.events = {
|
|
|
mouseDown: true,
|
|
|
b4MouseDown: true,
|
|
|
mouseUp: true,
|
|
|
b4StartDrag: true,
|
|
|
startDrag: true,
|
|
|
b4EndDrag: true,
|
|
|
endDrag: true,
|
|
|
drag: true,
|
|
|
b4Drag: true,
|
|
|
invalidDrop: true,
|
|
|
b4DragOut: true,
|
|
|
dragOut: true,
|
|
|
dragEnter: true,
|
|
|
b4DragOver: true,
|
|
|
dragOver: true,
|
|
|
b4DragDrop: true,
|
|
|
dragDrop: true
|
|
|
};
|
|
|
|
|
|
if (this.config.events) {
|
|
|
for (var i in this.config.events) {
|
|
|
if (this.config.events[i] === false) {
|
|
|
this.events[i] = false;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
// configurable properties:
|
|
|
// padding, isTarget, maintainOffset, primaryButtonOnly
|
|
|
this.padding = this.config.padding || [0, 0, 0, 0];
|
|
|
this.isTarget = (this.config.isTarget !== false);
|
|
|
this.maintainOffset = (this.config.maintainOffset);
|
|
|
this.primaryButtonOnly = (this.config.primaryButtonOnly !== false);
|
|
|
this.dragOnly = ((this.config.dragOnly === true) ? true : false);
|
|
|
this.useShim = ((this.config.useShim === true) ? true : false);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Executed when the linked element is available
|
|
|
* @method handleOnAvailable
|
|
|
* @private
|
|
|
*/
|
|
|
handleOnAvailable: function() {
|
|
|
this.available = true;
|
|
|
this.resetConstraints();
|
|
|
this.onAvailable();
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Configures the padding for the target zone in px. Effectively expands
|
|
|
* (or reduces) the virtual object size for targeting calculations.
|
|
|
* Supports css-style shorthand; if only one parameter is passed, all sides
|
|
|
* will have that padding, and if only two are passed, the top and bottom
|
|
|
* will have the first param, the left and right the second.
|
|
|
* @method setPadding
|
|
|
* @param {int} iTop Top pad
|
|
|
* @param {int} iRight Right pad
|
|
|
* @param {int} iBot Bot pad
|
|
|
* @param {int} iLeft Left pad
|
|
|
*/
|
|
|
setPadding: function(iTop, iRight, iBot, iLeft) {
|
|
|
// this.padding = [iLeft, iRight, iTop, iBot];
|
|
|
if (!iRight && 0 !== iRight) {
|
|
|
this.padding = [iTop, iTop, iTop, iTop];
|
|
|
} else if (!iBot && 0 !== iBot) {
|
|
|
this.padding = [iTop, iRight, iTop, iRight];
|
|
|
} else {
|
|
|
this.padding = [iTop, iRight, iBot, iLeft];
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Stores the initial placement of the linked element.
|
|
|
* @method setInitialPosition
|
|
|
* @param {int} diffX the X offset, default 0
|
|
|
* @param {int} diffY the Y offset, default 0
|
|
|
* @private
|
|
|
*/
|
|
|
setInitPosition: function(diffX, diffY) {
|
|
|
var el = this.getEl();
|
|
|
|
|
|
if (!this.DDM.verifyEl(el)) {
|
|
|
if (el && el.style && (el.style.display == 'none')) {
|
|
|
} else {
|
|
|
}
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
var dx = diffX || 0;
|
|
|
var dy = diffY || 0;
|
|
|
|
|
|
var p = Dom.getXY( el );
|
|
|
|
|
|
this.initPageX = p[0] - dx;
|
|
|
this.initPageY = p[1] - dy;
|
|
|
|
|
|
this.lastPageX = p[0];
|
|
|
this.lastPageY = p[1];
|
|
|
|
|
|
|
|
|
|
|
|
this.setStartPosition(p);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Sets the start position of the element. This is set when the obj
|
|
|
* is initialized, the reset when a drag is started.
|
|
|
* @method setStartPosition
|
|
|
* @param pos current position (from previous lookup)
|
|
|
* @private
|
|
|
*/
|
|
|
setStartPosition: function(pos) {
|
|
|
var p = pos || Dom.getXY(this.getEl());
|
|
|
|
|
|
this.deltaSetXY = null;
|
|
|
|
|
|
this.startPageX = p[0];
|
|
|
this.startPageY = p[1];
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Add this instance to a group of related drag/drop objects. All
|
|
|
* instances belong to at least one group, and can belong to as many
|
|
|
* groups as needed.
|
|
|
* @method addToGroup
|
|
|
* @param sGroup {string} the name of the group
|
|
|
*/
|
|
|
addToGroup: function(sGroup) {
|
|
|
this.groups[sGroup] = true;
|
|
|
this.DDM.regDragDrop(this, sGroup);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Remove's this instance from the supplied interaction group
|
|
|
* @method removeFromGroup
|
|
|
* @param {string} sGroup The group to drop
|
|
|
*/
|
|
|
removeFromGroup: function(sGroup) {
|
|
|
if (this.groups[sGroup]) {
|
|
|
delete this.groups[sGroup];
|
|
|
}
|
|
|
|
|
|
this.DDM.removeDDFromGroup(this, sGroup);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Allows you to specify that an element other than the linked element
|
|
|
* will be moved with the cursor during a drag
|
|
|
* @method setDragElId
|
|
|
* @param id {string} the id of the element that will be used to initiate the drag
|
|
|
*/
|
|
|
setDragElId: function(id) {
|
|
|
this.dragElId = id;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Allows you to specify a child of the linked element that should be
|
|
|
* used to initiate the drag operation. An example of this would be if
|
|
|
* you have a content div with text and links. Clicking anywhere in the
|
|
|
* content area would normally start the drag operation. Use this method
|
|
|
* to specify that an element inside of the content div is the element
|
|
|
* that starts the drag operation.
|
|
|
* @method setHandleElId
|
|
|
* @param id {string} the id of the element that will be used to
|
|
|
* initiate the drag.
|
|
|
*/
|
|
|
setHandleElId: function(id) {
|
|
|
if (typeof id !== "string") {
|
|
|
id = Dom.generateId(id);
|
|
|
}
|
|
|
this.handleElId = id;
|
|
|
this.DDM.regHandle(this.id, id);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Allows you to set an element outside of the linked element as a drag
|
|
|
* handle
|
|
|
* @method setOuterHandleElId
|
|
|
* @param id the id of the element that will be used to initiate the drag
|
|
|
*/
|
|
|
setOuterHandleElId: function(id) {
|
|
|
if (typeof id !== "string") {
|
|
|
id = Dom.generateId(id);
|
|
|
}
|
|
|
Event.on(id, "mousedown",
|
|
|
this.handleMouseDown, this, true);
|
|
|
this.setHandleElId(id);
|
|
|
|
|
|
this.hasOuterHandles = true;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Remove all drag and drop hooks for this element
|
|
|
* @method unreg
|
|
|
*/
|
|
|
unreg: function() {
|
|
|
Event.removeListener(this.id, "mousedown",
|
|
|
this.handleMouseDown);
|
|
|
this._domRef = null;
|
|
|
this.DDM._remove(this);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Returns true if this instance is locked, or the drag drop mgr is locked
|
|
|
* (meaning that all drag/drop is disabled on the page.)
|
|
|
* @method isLocked
|
|
|
* @return {boolean} true if this obj or all drag/drop is locked, else
|
|
|
* false
|
|
|
*/
|
|
|
isLocked: function() {
|
|
|
return (this.DDM.isLocked() || this.locked);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Fired when this object is clicked
|
|
|
* @method handleMouseDown
|
|
|
* @param {Event} e
|
|
|
* @param {YAHOO.util.DragDrop} oDD the clicked dd object (this dd obj)
|
|
|
* @private
|
|
|
*/
|
|
|
handleMouseDown: function(e, oDD) {
|
|
|
|
|
|
var button = e.which || e.button;
|
|
|
|
|
|
if (this.primaryButtonOnly && button > 1) {
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
if (this.isLocked()) {
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// firing the mousedown events prior to calculating positions
|
|
|
var b4Return = this.b4MouseDown(e),
|
|
|
b4Return2 = true;
|
|
|
|
|
|
if (this.events.b4MouseDown) {
|
|
|
b4Return2 = this.fireEvent('b4MouseDownEvent', e);
|
|
|
}
|
|
|
var mDownReturn = this.onMouseDown(e),
|
|
|
mDownReturn2 = true;
|
|
|
if (this.events.mouseDown) {
|
|
|
mDownReturn2 = this.fireEvent('mouseDownEvent', e);
|
|
|
}
|
|
|
|
|
|
if ((b4Return === false) || (mDownReturn === false) || (b4Return2 === false) || (mDownReturn2 === false)) {
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
this.DDM.refreshCache(this.groups);
|
|
|
// var self = this;
|
|
|
// setTimeout( function() { self.DDM.refreshCache(self.groups); }, 0);
|
|
|
|
|
|
// Only process the event if we really clicked within the linked
|
|
|
// element. The reason we make this check is that in the case that
|
|
|
// another element was moved between the clicked element and the
|
|
|
// cursor in the time between the mousedown and mouseup events. When
|
|
|
// this happens, the element gets the next mousedown event
|
|
|
// regardless of where on the screen it happened.
|
|
|
var pt = new YAHOO.util.Point(Event.getPageX(e), Event.getPageY(e));
|
|
|
if (!this.hasOuterHandles && !this.DDM.isOverTarget(pt, this) ) {
|
|
|
} else {
|
|
|
if (this.clickValidator(e)) {
|
|
|
|
|
|
|
|
|
// set the initial element position
|
|
|
this.setStartPosition();
|
|
|
|
|
|
// start tracking mousemove distance and mousedown time to
|
|
|
// determine when to start the actual drag
|
|
|
this.DDM.handleMouseDown(e, this);
|
|
|
|
|
|
// this mousedown is mine
|
|
|
this.DDM.stopEvent(e);
|
|
|
} else {
|
|
|
|
|
|
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* @method clickValidator
|
|
|
* @description Method validates that the clicked element
|
|
|
* was indeed the handle or a valid child of the handle
|
|
|
* @param {Event} e
|
|
|
*/
|
|
|
clickValidator: function(e) {
|
|
|
var target = YAHOO.util.Event.getTarget(e);
|
|
|
return ( this.isValidHandleChild(target) &&
|
|
|
(this.id == this.handleElId ||
|
|
|
this.DDM.handleWasClicked(target, this.id)) );
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Finds the location the element should be placed if we want to move
|
|
|
* it to where the mouse location less the click offset would place us.
|
|
|
* @method getTargetCoord
|
|
|
* @param {int} iPageX the X coordinate of the click
|
|
|
* @param {int} iPageY the Y coordinate of the click
|
|
|
* @return an object that contains the coordinates (Object.x and Object.y)
|
|
|
* @private
|
|
|
*/
|
|
|
getTargetCoord: function(iPageX, iPageY) {
|
|
|
|
|
|
|
|
|
var x = iPageX - this.deltaX;
|
|
|
var y = iPageY - this.deltaY;
|
|
|
|
|
|
if (this.constrainX) {
|
|
|
if (x < this.minX) { x = this.minX; }
|
|
|
if (x > this.maxX) { x = this.maxX; }
|
|
|
}
|
|
|
|
|
|
if (this.constrainY) {
|
|
|
if (y < this.minY) { y = this.minY; }
|
|
|
if (y > this.maxY) { y = this.maxY; }
|
|
|
}
|
|
|
|
|
|
x = this.getTick(x, this.xTicks);
|
|
|
y = this.getTick(y, this.yTicks);
|
|
|
|
|
|
|
|
|
return {x:x, y:y};
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Allows you to specify a tag name that should not start a drag operation
|
|
|
* when clicked. This is designed to facilitate embedding links within a
|
|
|
* drag handle that do something other than start the drag.
|
|
|
* @method addInvalidHandleType
|
|
|
* @param {string} tagName the type of element to exclude
|
|
|
*/
|
|
|
addInvalidHandleType: function(tagName) {
|
|
|
var type = tagName.toUpperCase();
|
|
|
this.invalidHandleTypes[type] = type;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Lets you to specify an element id for a child of a drag handle
|
|
|
* that should not initiate a drag
|
|
|
* @method addInvalidHandleId
|
|
|
* @param {string} id the element id of the element you wish to ignore
|
|
|
*/
|
|
|
addInvalidHandleId: function(id) {
|
|
|
if (typeof id !== "string") {
|
|
|
id = Dom.generateId(id);
|
|
|
}
|
|
|
this.invalidHandleIds[id] = id;
|
|
|
},
|
|
|
|
|
|
|
|
|
/**
|
|
|
* Lets you specify a css class of elements that will not initiate a drag
|
|
|
* @method addInvalidHandleClass
|
|
|
* @param {string} cssClass the class of the elements you wish to ignore
|
|
|
*/
|
|
|
addInvalidHandleClass: function(cssClass) {
|
|
|
this.invalidHandleClasses.push(cssClass);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Unsets an excluded tag name set by addInvalidHandleType
|
|
|
* @method removeInvalidHandleType
|
|
|
* @param {string} tagName the type of element to unexclude
|
|
|
*/
|
|
|
removeInvalidHandleType: function(tagName) {
|
|
|
var type = tagName.toUpperCase();
|
|
|
// this.invalidHandleTypes[type] = null;
|
|
|
delete this.invalidHandleTypes[type];
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Unsets an invalid handle id
|
|
|
* @method removeInvalidHandleId
|
|
|
* @param {string} id the id of the element to re-enable
|
|
|
*/
|
|
|
removeInvalidHandleId: function(id) {
|
|
|
if (typeof id !== "string") {
|
|
|
id = Dom.generateId(id);
|
|
|
}
|
|
|
delete this.invalidHandleIds[id];
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Unsets an invalid css class
|
|
|
* @method removeInvalidHandleClass
|
|
|
* @param {string} cssClass the class of the element(s) you wish to
|
|
|
* re-enable
|
|
|
*/
|
|
|
removeInvalidHandleClass: function(cssClass) {
|
|
|
for (var i=0, len=this.invalidHandleClasses.length; i<len; ++i) {
|
|
|
if (this.invalidHandleClasses[i] == cssClass) {
|
|
|
delete this.invalidHandleClasses[i];
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Checks the tag exclusion list to see if this click should be ignored
|
|
|
* @method isValidHandleChild
|
|
|
* @param {HTMLElement} node the HTMLElement to evaluate
|
|
|
* @return {boolean} true if this is a valid tag type, false if not
|
|
|
*/
|
|
|
isValidHandleChild: function(node) {
|
|
|
|
|
|
var valid = true;
|
|
|
// var n = (node.nodeName == "#text") ? node.parentNode : node;
|
|
|
var nodeName;
|
|
|
try {
|
|
|
nodeName = node.nodeName.toUpperCase();
|
|
|
} catch(e) {
|
|
|
nodeName = node.nodeName;
|
|
|
}
|
|
|
valid = valid && !this.invalidHandleTypes[nodeName];
|
|
|
valid = valid && !this.invalidHandleIds[node.id];
|
|
|
|
|
|
for (var i=0, len=this.invalidHandleClasses.length; valid && i<len; ++i) {
|
|
|
valid = !Dom.hasClass(node, this.invalidHandleClasses[i]);
|
|
|
}
|
|
|
|
|
|
|
|
|
return valid;
|
|
|
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Create the array of horizontal tick marks if an interval was specified
|
|
|
* in setXConstraint().
|
|
|
* @method setXTicks
|
|
|
* @private
|
|
|
*/
|
|
|
setXTicks: function(iStartX, iTickSize) {
|
|
|
this.xTicks = [];
|
|
|
this.xTickSize = iTickSize;
|
|
|
|
|
|
var tickMap = {};
|
|
|
|
|
|
for (var i = this.initPageX; i >= this.minX; i = i - iTickSize) {
|
|
|
if (!tickMap[i]) {
|
|
|
this.xTicks[this.xTicks.length] = i;
|
|
|
tickMap[i] = true;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
for (i = this.initPageX; i <= this.maxX; i = i + iTickSize) {
|
|
|
if (!tickMap[i]) {
|
|
|
this.xTicks[this.xTicks.length] = i;
|
|
|
tickMap[i] = true;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
this.xTicks.sort(this.DDM.numericSort) ;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Create the array of vertical tick marks if an interval was specified in
|
|
|
* setYConstraint().
|
|
|
* @method setYTicks
|
|
|
* @private
|
|
|
*/
|
|
|
setYTicks: function(iStartY, iTickSize) {
|
|
|
this.yTicks = [];
|
|
|
this.yTickSize = iTickSize;
|
|
|
|
|
|
var tickMap = {};
|
|
|
|
|
|
for (var i = this.initPageY; i >= this.minY; i = i - iTickSize) {
|
|
|
if (!tickMap[i]) {
|
|
|
this.yTicks[this.yTicks.length] = i;
|
|
|
tickMap[i] = true;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
for (i = this.initPageY; i <= this.maxY; i = i + iTickSize) {
|
|
|
if (!tickMap[i]) {
|
|
|
this.yTicks[this.yTicks.length] = i;
|
|
|
tickMap[i] = true;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
this.yTicks.sort(this.DDM.numericSort) ;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* By default, the element can be dragged any place on the screen. Use
|
|
|
* this method to limit the horizontal travel of the element. Pass in
|
|
|
* 0,0 for the parameters if you want to lock the drag to the y axis.
|
|
|
* @method setXConstraint
|
|
|
* @param {int} iLeft the number of pixels the element can move to the left
|
|
|
* @param {int} iRight the number of pixels the element can move to the
|
|
|
* right
|
|
|
* @param {int} iTickSize optional parameter for specifying that the
|
|
|
* element
|
|
|
* should move iTickSize pixels at a time.
|
|
|
*/
|
|
|
setXConstraint: function(iLeft, iRight, iTickSize) {
|
|
|
this.leftConstraint = parseInt(iLeft, 10);
|
|
|
this.rightConstraint = parseInt(iRight, 10);
|
|
|
|
|
|
this.minX = this.initPageX - this.leftConstraint;
|
|
|
this.maxX = this.initPageX + this.rightConstraint;
|
|
|
if (iTickSize) { this.setXTicks(this.initPageX, iTickSize); }
|
|
|
|
|
|
this.constrainX = true;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Clears any constraints applied to this instance. Also clears ticks
|
|
|
* since they can't exist independent of a constraint at this time.
|
|
|
* @method clearConstraints
|
|
|
*/
|
|
|
clearConstraints: function() {
|
|
|
this.constrainX = false;
|
|
|
this.constrainY = false;
|
|
|
this.clearTicks();
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Clears any tick interval defined for this instance
|
|
|
* @method clearTicks
|
|
|
*/
|
|
|
clearTicks: function() {
|
|
|
this.xTicks = null;
|
|
|
this.yTicks = null;
|
|
|
this.xTickSize = 0;
|
|
|
this.yTickSize = 0;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* By default, the element can be dragged any place on the screen. Set
|
|
|
* this to limit the vertical travel of the element. Pass in 0,0 for the
|
|
|
* parameters if you want to lock the drag to the x axis.
|
|
|
* @method setYConstraint
|
|
|
* @param {int} iUp the number of pixels the element can move up
|
|
|
* @param {int} iDown the number of pixels the element can move down
|
|
|
* @param {int} iTickSize optional parameter for specifying that the
|
|
|
* element should move iTickSize pixels at a time.
|
|
|
*/
|
|
|
setYConstraint: function(iUp, iDown, iTickSize) {
|
|
|
this.topConstraint = parseInt(iUp, 10);
|
|
|
this.bottomConstraint = parseInt(iDown, 10);
|
|
|
|
|
|
this.minY = this.initPageY - this.topConstraint;
|
|
|
this.maxY = this.initPageY + this.bottomConstraint;
|
|
|
if (iTickSize) { this.setYTicks(this.initPageY, iTickSize); }
|
|
|
|
|
|
this.constrainY = true;
|
|
|
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* resetConstraints must be called if you manually reposition a dd element.
|
|
|
* @method resetConstraints
|
|
|
*/
|
|
|
resetConstraints: function() {
|
|
|
|
|
|
|
|
|
// Maintain offsets if necessary
|
|
|
if (this.initPageX || this.initPageX === 0) {
|
|
|
// figure out how much this thing has moved
|
|
|
var dx = (this.maintainOffset) ? this.lastPageX - this.initPageX : 0;
|
|
|
var dy = (this.maintainOffset) ? this.lastPageY - this.initPageY : 0;
|
|
|
|
|
|
this.setInitPosition(dx, dy);
|
|
|
|
|
|
// This is the first time we have detected the element's position
|
|
|
} else {
|
|
|
this.setInitPosition();
|
|
|
}
|
|
|
|
|
|
if (this.constrainX) {
|
|
|
this.setXConstraint( this.leftConstraint,
|
|
|
this.rightConstraint,
|
|
|
this.xTickSize );
|
|
|
}
|
|
|
|
|
|
if (this.constrainY) {
|
|
|
this.setYConstraint( this.topConstraint,
|
|
|
this.bottomConstraint,
|
|
|
this.yTickSize );
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Normally the drag element is moved pixel by pixel, but we can specify
|
|
|
* that it move a number of pixels at a time. This method resolves the
|
|
|
* location when we have it set up like this.
|
|
|
* @method getTick
|
|
|
* @param {int} val where we want to place the object
|
|
|
* @param {int[]} tickArray sorted array of valid points
|
|
|
* @return {int} the closest tick
|
|
|
* @private
|
|
|
*/
|
|
|
getTick: function(val, tickArray) {
|
|
|
|
|
|
if (!tickArray) {
|
|
|
// If tick interval is not defined, it is effectively 1 pixel,
|
|
|
// so we return the value passed to us.
|
|
|
return val;
|
|
|
} else if (tickArray[0] >= val) {
|
|
|
// The value is lower than the first tick, so we return the first
|
|
|
// tick.
|
|
|
return tickArray[0];
|
|
|
} else {
|
|
|
for (var i=0, len=tickArray.length; i<len; ++i) {
|
|
|
var next = i + 1;
|
|
|
if (tickArray[next] && tickArray[next] >= val) {
|
|
|
var diff1 = val - tickArray[i];
|
|
|
var diff2 = tickArray[next] - val;
|
|
|
return (diff2 > diff1) ? tickArray[i] : tickArray[next];
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// The value is larger than the last tick, so we return the last
|
|
|
// tick.
|
|
|
return tickArray[tickArray.length - 1];
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* toString method
|
|
|
* @method toString
|
|
|
* @return {string} string representation of the dd obj
|
|
|
*/
|
|
|
toString: function() {
|
|
|
return ("DragDrop " + this.id);
|
|
|
}
|
|
|
|
|
|
};
|
|
|
YAHOO.augment(YAHOO.util.DragDrop, YAHOO.util.EventProvider);
|
|
|
|
|
|
/**
|
|
|
* @event mouseDownEvent
|
|
|
* @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4MouseDownEvent
|
|
|
* @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event mouseUpEvent
|
|
|
* @description Fired from inside DragDropMgr when the drag operation is finished.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4StartDragEvent
|
|
|
* @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event startDragEvent
|
|
|
* @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4EndDragEvent
|
|
|
* @description Fires before the endDragEvent. Returning false will cancel.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event endDragEvent
|
|
|
* @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event dragEvent
|
|
|
* @description Occurs every mousemove event while dragging.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragEvent
|
|
|
* @description Fires before the dragEvent.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event invalidDropEvent
|
|
|
* @description Fires when the dragged objects is dropped in a location that contains no drop targets.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragOutEvent
|
|
|
* @description Fires before the dragOutEvent
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragOutEvent
|
|
|
* @description Fires when a dragged object is no longer over an object that had the onDragEnter fire.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragEnterEvent
|
|
|
* @description Occurs when the dragged object first interacts with another targettable drag and drop object.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragOverEvent
|
|
|
* @description Fires before the dragOverEvent.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragOverEvent
|
|
|
* @description Fires every mousemove event while over a drag and drop object.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragDropEvent
|
|
|
* @description Fires before the dragDropEvent
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragDropEvent
|
|
|
* @description Fires when the dragged objects is dropped on another.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
})();
|
|
|
/**
|
|
|
* A DragDrop implementation where the linked element follows the
|
|
|
* mouse cursor during a drag.
|
|
|
* @class DD
|
|
|
* @extends YAHOO.util.DragDrop
|
|
|
* @constructor
|
|
|
* @param {String} id the id of the linked element
|
|
|
* @param {String} sGroup the group of related DragDrop items
|
|
|
* @param {object} config an object containing configurable attributes
|
|
|
* Valid properties for DD:
|
|
|
* scroll
|
|
|
*/
|
|
|
YAHOO.util.DD = function(id, sGroup, config) {
|
|
|
if (id) {
|
|
|
this.init(id, sGroup, config);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
YAHOO.extend(YAHOO.util.DD, YAHOO.util.DragDrop, {
|
|
|
|
|
|
/**
|
|
|
* When set to true, the utility automatically tries to scroll the browser
|
|
|
* window when a drag and drop element is dragged near the viewport boundary.
|
|
|
* Defaults to true.
|
|
|
* @property scroll
|
|
|
* @type boolean
|
|
|
*/
|
|
|
scroll: true,
|
|
|
|
|
|
/**
|
|
|
* Sets the pointer offset to the distance between the linked element's top
|
|
|
* left corner and the location the element was clicked
|
|
|
* @method autoOffset
|
|
|
* @param {int} iPageX the X coordinate of the click
|
|
|
* @param {int} iPageY the Y coordinate of the click
|
|
|
*/
|
|
|
autoOffset: function(iPageX, iPageY) {
|
|
|
var x = iPageX - this.startPageX;
|
|
|
var y = iPageY - this.startPageY;
|
|
|
this.setDelta(x, y);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Sets the pointer offset. You can call this directly to force the
|
|
|
* offset to be in a particular location (e.g., pass in 0,0 to set it
|
|
|
* to the center of the object, as done in YAHOO.widget.Slider)
|
|
|
* @method setDelta
|
|
|
* @param {int} iDeltaX the distance from the left
|
|
|
* @param {int} iDeltaY the distance from the top
|
|
|
*/
|
|
|
setDelta: function(iDeltaX, iDeltaY) {
|
|
|
this.deltaX = iDeltaX;
|
|
|
this.deltaY = iDeltaY;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Sets the drag element to the location of the mousedown or click event,
|
|
|
* maintaining the cursor location relative to the location on the element
|
|
|
* that was clicked. Override this if you want to place the element in a
|
|
|
* location other than where the cursor is.
|
|
|
* @method setDragElPos
|
|
|
* @param {int} iPageX the X coordinate of the mousedown or drag event
|
|
|
* @param {int} iPageY the Y coordinate of the mousedown or drag event
|
|
|
*/
|
|
|
setDragElPos: function(iPageX, iPageY) {
|
|
|
// the first time we do this, we are going to check to make sure
|
|
|
// the element has css positioning
|
|
|
|
|
|
var el = this.getDragEl();
|
|
|
this.alignElWithMouse(el, iPageX, iPageY);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Sets the element to the location of the mousedown or click event,
|
|
|
* maintaining the cursor location relative to the location on the element
|
|
|
* that was clicked. Override this if you want to place the element in a
|
|
|
* location other than where the cursor is.
|
|
|
* @method alignElWithMouse
|
|
|
* @param {HTMLElement} el the element to move
|
|
|
* @param {int} iPageX the X coordinate of the mousedown or drag event
|
|
|
* @param {int} iPageY the Y coordinate of the mousedown or drag event
|
|
|
*/
|
|
|
alignElWithMouse: function(el, iPageX, iPageY) {
|
|
|
var oCoord = this.getTargetCoord(iPageX, iPageY);
|
|
|
|
|
|
if (!this.deltaSetXY) {
|
|
|
var aCoord = [oCoord.x, oCoord.y];
|
|
|
YAHOO.util.Dom.setXY(el, aCoord);
|
|
|
|
|
|
var newLeft = parseInt( YAHOO.util.Dom.getStyle(el, "left"), 10 );
|
|
|
var newTop = parseInt( YAHOO.util.Dom.getStyle(el, "top" ), 10 );
|
|
|
|
|
|
this.deltaSetXY = [ newLeft - oCoord.x, newTop - oCoord.y ];
|
|
|
} else {
|
|
|
YAHOO.util.Dom.setStyle(el, "left", (oCoord.x + this.deltaSetXY[0]) + "px");
|
|
|
YAHOO.util.Dom.setStyle(el, "top", (oCoord.y + this.deltaSetXY[1]) + "px");
|
|
|
}
|
|
|
|
|
|
this.cachePosition(oCoord.x, oCoord.y);
|
|
|
var self = this;
|
|
|
setTimeout(function() {
|
|
|
self.autoScroll.call(self, oCoord.x, oCoord.y, el.offsetHeight, el.offsetWidth);
|
|
|
}, 0);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Saves the most recent position so that we can reset the constraints and
|
|
|
* tick marks on-demand. We need to know this so that we can calculate the
|
|
|
* number of pixels the element is offset from its original position.
|
|
|
* @method cachePosition
|
|
|
* @param iPageX the current x position (optional, this just makes it so we
|
|
|
* don't have to look it up again)
|
|
|
* @param iPageY the current y position (optional, this just makes it so we
|
|
|
* don't have to look it up again)
|
|
|
*/
|
|
|
cachePosition: function(iPageX, iPageY) {
|
|
|
if (iPageX) {
|
|
|
this.lastPageX = iPageX;
|
|
|
this.lastPageY = iPageY;
|
|
|
} else {
|
|
|
var aCoord = YAHOO.util.Dom.getXY(this.getEl());
|
|
|
this.lastPageX = aCoord[0];
|
|
|
this.lastPageY = aCoord[1];
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Auto-scroll the window if the dragged object has been moved beyond the
|
|
|
* visible window boundary.
|
|
|
* @method autoScroll
|
|
|
* @param {int} x the drag element's x position
|
|
|
* @param {int} y the drag element's y position
|
|
|
* @param {int} h the height of the drag element
|
|
|
* @param {int} w the width of the drag element
|
|
|
* @private
|
|
|
*/
|
|
|
autoScroll: function(x, y, h, w) {
|
|
|
|
|
|
if (this.scroll) {
|
|
|
// The client height
|
|
|
var clientH = this.DDM.getClientHeight();
|
|
|
|
|
|
// The client width
|
|
|
var clientW = this.DDM.getClientWidth();
|
|
|
|
|
|
// The amt scrolled down
|
|
|
var st = this.DDM.getScrollTop();
|
|
|
|
|
|
// The amt scrolled right
|
|
|
var sl = this.DDM.getScrollLeft();
|
|
|
|
|
|
// Location of the bottom of the element
|
|
|
var bot = h + y;
|
|
|
|
|
|
// Location of the right of the element
|
|
|
var right = w + x;
|
|
|
|
|
|
// The distance from the cursor to the bottom of the visible area,
|
|
|
// adjusted so that we don't scroll if the cursor is beyond the
|
|
|
// element drag constraints
|
|
|
var toBot = (clientH + st - y - this.deltaY);
|
|
|
|
|
|
// The distance from the cursor to the right of the visible area
|
|
|
var toRight = (clientW + sl - x - this.deltaX);
|
|
|
|
|
|
|
|
|
// How close to the edge the cursor must be before we scroll
|
|
|
// var thresh = (document.all) ? 100 : 40;
|
|
|
var thresh = 40;
|
|
|
|
|
|
// How many pixels to scroll per autoscroll op. This helps to reduce
|
|
|
// clunky scrolling. IE is more sensitive about this ... it needs this
|
|
|
// value to be higher.
|
|
|
var scrAmt = (document.all) ? 80 : 30;
|
|
|
|
|
|
// Scroll down if we are near the bottom of the visible page and the
|
|
|
// obj extends below the crease
|
|
|
if ( bot > clientH && toBot < thresh ) {
|
|
|
window.scrollTo(sl, st + scrAmt);
|
|
|
}
|
|
|
|
|
|
// Scroll up if the window is scrolled down and the top of the object
|
|
|
// goes above the top border
|
|
|
if ( y < st && st > 0 && y - st < thresh ) {
|
|
|
window.scrollTo(sl, st - scrAmt);
|
|
|
}
|
|
|
|
|
|
// Scroll right if the obj is beyond the right border and the cursor is
|
|
|
// near the border.
|
|
|
if ( right > clientW && toRight < thresh ) {
|
|
|
window.scrollTo(sl + scrAmt, st);
|
|
|
}
|
|
|
|
|
|
// Scroll left if the window has been scrolled to the right and the obj
|
|
|
// extends past the left border
|
|
|
if ( x < sl && sl > 0 && x - sl < thresh ) {
|
|
|
window.scrollTo(sl - scrAmt, st);
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/*
|
|
|
* Sets up config options specific to this class. Overrides
|
|
|
* YAHOO.util.DragDrop, but all versions of this method through the
|
|
|
* inheritance chain are called
|
|
|
*/
|
|
|
applyConfig: function() {
|
|
|
YAHOO.util.DD.superclass.applyConfig.call(this);
|
|
|
this.scroll = (this.config.scroll !== false);
|
|
|
},
|
|
|
|
|
|
/*
|
|
|
* Event that fires prior to the onMouseDown event. Overrides
|
|
|
* YAHOO.util.DragDrop.
|
|
|
*/
|
|
|
b4MouseDown: function(e) {
|
|
|
this.setStartPosition();
|
|
|
// this.resetConstraints();
|
|
|
this.autoOffset(YAHOO.util.Event.getPageX(e),
|
|
|
YAHOO.util.Event.getPageY(e));
|
|
|
},
|
|
|
|
|
|
/*
|
|
|
* Event that fires prior to the onDrag event. Overrides
|
|
|
* YAHOO.util.DragDrop.
|
|
|
*/
|
|
|
b4Drag: function(e) {
|
|
|
this.setDragElPos(YAHOO.util.Event.getPageX(e),
|
|
|
YAHOO.util.Event.getPageY(e));
|
|
|
},
|
|
|
|
|
|
toString: function() {
|
|
|
return ("DD " + this.id);
|
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
// Debugging ygDragDrop events that can be overridden
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
/*
|
|
|
startDrag: function(x, y) {
|
|
|
},
|
|
|
|
|
|
onDrag: function(e) {
|
|
|
},
|
|
|
|
|
|
onDragEnter: function(e, id) {
|
|
|
},
|
|
|
|
|
|
onDragOver: function(e, id) {
|
|
|
},
|
|
|
|
|
|
onDragOut: function(e, id) {
|
|
|
},
|
|
|
|
|
|
onDragDrop: function(e, id) {
|
|
|
},
|
|
|
|
|
|
endDrag: function(e) {
|
|
|
}
|
|
|
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event mouseDownEvent
|
|
|
* @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4MouseDownEvent
|
|
|
* @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event mouseUpEvent
|
|
|
* @description Fired from inside DragDropMgr when the drag operation is finished.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4StartDragEvent
|
|
|
* @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event startDragEvent
|
|
|
* @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4EndDragEvent
|
|
|
* @description Fires before the endDragEvent. Returning false will cancel.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event endDragEvent
|
|
|
* @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event dragEvent
|
|
|
* @description Occurs every mousemove event while dragging.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragEvent
|
|
|
* @description Fires before the dragEvent.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event invalidDropEvent
|
|
|
* @description Fires when the dragged objects is dropped in a location that contains no drop targets.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragOutEvent
|
|
|
* @description Fires before the dragOutEvent
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragOutEvent
|
|
|
* @description Fires when a dragged object is no longer over an object that had the onDragEnter fire.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragEnterEvent
|
|
|
* @description Occurs when the dragged object first interacts with another targettable drag and drop object.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragOverEvent
|
|
|
* @description Fires before the dragOverEvent.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragOverEvent
|
|
|
* @description Fires every mousemove event while over a drag and drop object.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragDropEvent
|
|
|
* @description Fires before the dragDropEvent
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragDropEvent
|
|
|
* @description Fires when the dragged objects is dropped on another.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
});
|
|
|
/**
|
|
|
* A DragDrop implementation that inserts an empty, bordered div into
|
|
|
* the document that follows the cursor during drag operations. At the time of
|
|
|
* the click, the frame div is resized to the dimensions of the linked html
|
|
|
* element, and moved to the exact location of the linked element.
|
|
|
*
|
|
|
* References to the "frame" element refer to the single proxy element that
|
|
|
* was created to be dragged in place of all DDProxy elements on the
|
|
|
* page.
|
|
|
*
|
|
|
* @class DDProxy
|
|
|
* @extends YAHOO.util.DD
|
|
|
* @constructor
|
|
|
* @param {String} id the id of the linked html element
|
|
|
* @param {String} sGroup the group of related DragDrop objects
|
|
|
* @param {object} config an object containing configurable attributes
|
|
|
* Valid properties for DDProxy in addition to those in DragDrop:
|
|
|
* resizeFrame, centerFrame, dragElId
|
|
|
*/
|
|
|
YAHOO.util.DDProxy = function(id, sGroup, config) {
|
|
|
if (id) {
|
|
|
this.init(id, sGroup, config);
|
|
|
this.initFrame();
|
|
|
}
|
|
|
};
|
|
|
|
|
|
/**
|
|
|
* The default drag frame div id
|
|
|
* @property YAHOO.util.DDProxy.dragElId
|
|
|
* @type String
|
|
|
* @static
|
|
|
*/
|
|
|
YAHOO.util.DDProxy.dragElId = "ygddfdiv";
|
|
|
|
|
|
YAHOO.extend(YAHOO.util.DDProxy, YAHOO.util.DD, {
|
|
|
|
|
|
/**
|
|
|
* By default we resize the drag frame to be the same size as the element
|
|
|
* we want to drag (this is to get the frame effect). We can turn it off
|
|
|
* if we want a different behavior.
|
|
|
* @property resizeFrame
|
|
|
* @type boolean
|
|
|
*/
|
|
|
resizeFrame: true,
|
|
|
|
|
|
/**
|
|
|
* By default the frame is positioned exactly where the drag element is, so
|
|
|
* we use the cursor offset provided by YAHOO.util.DD. Another option that works only if
|
|
|
* you do not have constraints on the obj is to have the drag frame centered
|
|
|
* around the cursor. Set centerFrame to true for this effect.
|
|
|
* @property centerFrame
|
|
|
* @type boolean
|
|
|
*/
|
|
|
centerFrame: false,
|
|
|
|
|
|
/**
|
|
|
* Creates the proxy element if it does not yet exist
|
|
|
* @method createFrame
|
|
|
*/
|
|
|
createFrame: function() {
|
|
|
var self=this, body=document.body;
|
|
|
|
|
|
if (!body || !body.firstChild) {
|
|
|
setTimeout( function() { self.createFrame(); }, 50 );
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
var div=this.getDragEl(), Dom=YAHOO.util.Dom;
|
|
|
|
|
|
if (!div) {
|
|
|
div = document.createElement("div");
|
|
|
div.id = this.dragElId;
|
|
|
var s = div.style;
|
|
|
|
|
|
s.position = "absolute";
|
|
|
s.visibility = "hidden";
|
|
|
s.cursor = "move";
|
|
|
s.border = "2px solid #aaa";
|
|
|
s.zIndex = 999;
|
|
|
s.height = "25px";
|
|
|
s.width = "25px";
|
|
|
|
|
|
var _data = document.createElement('div');
|
|
|
Dom.setStyle(_data, 'height', '100%');
|
|
|
Dom.setStyle(_data, 'width', '100%');
|
|
|
/**
|
|
|
* If the proxy element has no background-color, then it is considered to the "transparent" by Internet Explorer.
|
|
|
* Since it is "transparent" then the events pass through it to the iframe below.
|
|
|
* So creating a "fake" div inside the proxy element and giving it a background-color, then setting it to an
|
|
|
* opacity of 0, it appears to not be there, however IE still thinks that it is so the events never pass through.
|
|
|
*/
|
|
|
Dom.setStyle(_data, 'background-color', '#ccc');
|
|
|
Dom.setStyle(_data, 'opacity', '0');
|
|
|
div.appendChild(_data);
|
|
|
|
|
|
// appendChild can blow up IE if invoked prior to the window load event
|
|
|
// while rendering a table. It is possible there are other scenarios
|
|
|
// that would cause this to happen as well.
|
|
|
body.insertBefore(div, body.firstChild);
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Initialization for the drag frame element. Must be called in the
|
|
|
* constructor of all subclasses
|
|
|
* @method initFrame
|
|
|
*/
|
|
|
initFrame: function() {
|
|
|
this.createFrame();
|
|
|
},
|
|
|
|
|
|
applyConfig: function() {
|
|
|
YAHOO.util.DDProxy.superclass.applyConfig.call(this);
|
|
|
|
|
|
this.resizeFrame = (this.config.resizeFrame !== false);
|
|
|
this.centerFrame = (this.config.centerFrame);
|
|
|
this.setDragElId(this.config.dragElId || YAHOO.util.DDProxy.dragElId);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Resizes the drag frame to the dimensions of the clicked object, positions
|
|
|
* it over the object, and finally displays it
|
|
|
* @method showFrame
|
|
|
* @param {int} iPageX X click position
|
|
|
* @param {int} iPageY Y click position
|
|
|
* @private
|
|
|
*/
|
|
|
showFrame: function(iPageX, iPageY) {
|
|
|
var el = this.getEl();
|
|
|
var dragEl = this.getDragEl();
|
|
|
var s = dragEl.style;
|
|
|
|
|
|
this._resizeProxy();
|
|
|
|
|
|
if (this.centerFrame) {
|
|
|
this.setDelta( Math.round(parseInt(s.width, 10)/2),
|
|
|
Math.round(parseInt(s.height, 10)/2) );
|
|
|
}
|
|
|
|
|
|
this.setDragElPos(iPageX, iPageY);
|
|
|
|
|
|
YAHOO.util.Dom.setStyle(dragEl, "visibility", "visible");
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* The proxy is automatically resized to the dimensions of the linked
|
|
|
* element when a drag is initiated, unless resizeFrame is set to false
|
|
|
* @method _resizeProxy
|
|
|
* @private
|
|
|
*/
|
|
|
_resizeProxy: function() {
|
|
|
if (this.resizeFrame) {
|
|
|
var DOM = YAHOO.util.Dom;
|
|
|
var el = this.getEl();
|
|
|
var dragEl = this.getDragEl();
|
|
|
|
|
|
var bt = parseInt( DOM.getStyle(dragEl, "borderTopWidth" ), 10);
|
|
|
var br = parseInt( DOM.getStyle(dragEl, "borderRightWidth" ), 10);
|
|
|
var bb = parseInt( DOM.getStyle(dragEl, "borderBottomWidth" ), 10);
|
|
|
var bl = parseInt( DOM.getStyle(dragEl, "borderLeftWidth" ), 10);
|
|
|
|
|
|
if (isNaN(bt)) { bt = 0; }
|
|
|
if (isNaN(br)) { br = 0; }
|
|
|
if (isNaN(bb)) { bb = 0; }
|
|
|
if (isNaN(bl)) { bl = 0; }
|
|
|
|
|
|
|
|
|
var newWidth = Math.max(0, el.offsetWidth - br - bl);
|
|
|
var newHeight = Math.max(0, el.offsetHeight - bt - bb);
|
|
|
|
|
|
|
|
|
DOM.setStyle( dragEl, "width", newWidth + "px" );
|
|
|
DOM.setStyle( dragEl, "height", newHeight + "px" );
|
|
|
}
|
|
|
},
|
|
|
|
|
|
// overrides YAHOO.util.DragDrop
|
|
|
b4MouseDown: function(e) {
|
|
|
this.setStartPosition();
|
|
|
var x = YAHOO.util.Event.getPageX(e);
|
|
|
var y = YAHOO.util.Event.getPageY(e);
|
|
|
this.autoOffset(x, y);
|
|
|
|
|
|
// This causes the autoscroll code to kick off, which means autoscroll can
|
|
|
// happen prior to the check for a valid drag handle.
|
|
|
// this.setDragElPos(x, y);
|
|
|
},
|
|
|
|
|
|
// overrides YAHOO.util.DragDrop
|
|
|
b4StartDrag: function(x, y) {
|
|
|
// show the drag frame
|
|
|
this.showFrame(x, y);
|
|
|
},
|
|
|
|
|
|
// overrides YAHOO.util.DragDrop
|
|
|
b4EndDrag: function(e) {
|
|
|
YAHOO.util.Dom.setStyle(this.getDragEl(), "visibility", "hidden");
|
|
|
},
|
|
|
|
|
|
// overrides YAHOO.util.DragDrop
|
|
|
// By default we try to move the element to the last location of the frame.
|
|
|
// This is so that the default behavior mirrors that of YAHOO.util.DD.
|
|
|
endDrag: function(e) {
|
|
|
var DOM = YAHOO.util.Dom;
|
|
|
var lel = this.getEl();
|
|
|
var del = this.getDragEl();
|
|
|
|
|
|
// Show the drag frame briefly so we can get its position
|
|
|
// del.style.visibility = "";
|
|
|
DOM.setStyle(del, "visibility", "");
|
|
|
|
|
|
// Hide the linked element before the move to get around a Safari
|
|
|
// rendering bug.
|
|
|
//lel.style.visibility = "hidden";
|
|
|
DOM.setStyle(lel, "visibility", "hidden");
|
|
|
YAHOO.util.DDM.moveToEl(lel, del);
|
|
|
//del.style.visibility = "hidden";
|
|
|
DOM.setStyle(del, "visibility", "hidden");
|
|
|
//lel.style.visibility = "";
|
|
|
DOM.setStyle(lel, "visibility", "");
|
|
|
},
|
|
|
|
|
|
toString: function() {
|
|
|
return ("DDProxy " + this.id);
|
|
|
}
|
|
|
/**
|
|
|
* @event mouseDownEvent
|
|
|
* @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4MouseDownEvent
|
|
|
* @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event mouseUpEvent
|
|
|
* @description Fired from inside DragDropMgr when the drag operation is finished.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4StartDragEvent
|
|
|
* @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event startDragEvent
|
|
|
* @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event b4EndDragEvent
|
|
|
* @description Fires before the endDragEvent. Returning false will cancel.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event endDragEvent
|
|
|
* @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
/**
|
|
|
* @event dragEvent
|
|
|
* @description Occurs every mousemove event while dragging.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragEvent
|
|
|
* @description Fires before the dragEvent.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event invalidDropEvent
|
|
|
* @description Fires when the dragged objects is dropped in a location that contains no drop targets.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragOutEvent
|
|
|
* @description Fires before the dragOutEvent
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragOutEvent
|
|
|
* @description Fires when a dragged object is no longer over an object that had the onDragEnter fire.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragEnterEvent
|
|
|
* @description Occurs when the dragged object first interacts with another targettable drag and drop object.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragOverEvent
|
|
|
* @description Fires before the dragOverEvent.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragOverEvent
|
|
|
* @description Fires every mousemove event while over a drag and drop object.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event b4DragDropEvent
|
|
|
* @description Fires before the dragDropEvent
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
/**
|
|
|
* @event dragDropEvent
|
|
|
* @description Fires when the dragged objects is dropped on another.
|
|
|
* @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
|
|
|
*/
|
|
|
|
|
|
});
|
|
|
/**
|
|
|
* A DragDrop implementation that does not move, but can be a drop
|
|
|
* target. You would get the same result by simply omitting implementation
|
|
|
* for the event callbacks, but this way we reduce the processing cost of the
|
|
|
* event listener and the callbacks.
|
|
|
* @class DDTarget
|
|
|
* @extends YAHOO.util.DragDrop
|
|
|
* @constructor
|
|
|
* @param {String} id the id of the element that is a drop target
|
|
|
* @param {String} sGroup the group of related DragDrop objects
|
|
|
* @param {object} config an object containing configurable attributes
|
|
|
* Valid properties for DDTarget in addition to those in
|
|
|
* DragDrop:
|
|
|
* none
|
|
|
*/
|
|
|
YAHOO.util.DDTarget = function(id, sGroup, config) {
|
|
|
if (id) {
|
|
|
this.initTarget(id, sGroup, config);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
// YAHOO.util.DDTarget.prototype = new YAHOO.util.DragDrop();
|
|
|
YAHOO.extend(YAHOO.util.DDTarget, YAHOO.util.DragDrop, {
|
|
|
toString: function() {
|
|
|
return ("DDTarget " + this.id);
|
|
|
}
|
|
|
});
|
|
|
YAHOO.register("dragdrop", YAHOO.util.DragDropMgr, {version: "2.8.0r4", build: "2449"});
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