| /* |
| Copyright (c) 2008, Yahoo! Inc. All rights reserved. |
| Code licensed under the BSD License: |
| http://developer.yahoo.net/yui/license.txt |
| version: 2.6.0 |
| */ |
| /** |
| * The drag and drop utility provides a framework for building drag and drop |
| * applications. In addition to enabling drag and drop for specific elements, |
| * the drag and drop elements are tracked by the manager class, and the |
| * interactions between the various elements are tracked during the drag and |
| * the implementing code is notified about these important moments. |
| * @module dragdrop |
| * @title Drag and Drop |
| * @requires yahoo,dom,event |
| * @namespace YAHOO.util |
| */ |
| |
| // Only load the library once. Rewriting the manager class would orphan |
| // existing drag and drop instances. |
| if (!YAHOO.util.DragDropMgr) { |
| |
| /** |
| * DragDropMgr is a singleton that tracks the element interaction for |
| * all DragDrop items in the window. Generally, you will not call |
| * this class directly, but it does have helper methods that could |
| * be useful in your DragDrop implementations. |
| * @class DragDropMgr |
| * @static |
| */ |
| YAHOO.util.DragDropMgr = function() { |
| |
| var Event = YAHOO.util.Event, |
| Dom = YAHOO.util.Dom; |
| |
| return { |
| /** |
| * 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) |
| * @property useShim |
| * @type Boolean |
| * @static |
| */ |
| useShim: false, |
| /** |
| * This property is used to determine if the shim is active over the screen, default false. |
| * @private |
| * @property _shimActive |
| * @type Boolean |
| * @static |
| */ |
| _shimActive: false, |
| /** |
| * 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. |
| * @private |
| * @property _shimState |
| * @type Boolean |
| * @static |
| */ |
| _shimState: false, |
| /** |
| * 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;) |
| * @private |
| * @property _debugShim |
| * @type Boolean |
| * @static |
| */ |
| _debugShim: false, |
| /** |
| * 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 |
| * @private |
| * @method _sizeShim |
| * @static |
| */ |
| _createShim: function() { |
| var s = document.createElement('div'); |
| s.id = 'yui-ddm-shim'; |
| if (document.body.firstChild) { |
| document.body.insertBefore(s, document.body.firstChild); |
| } else { |
| document.body.appendChild(s); |
| } |
| s.style.display = 'none'; |
| s.style.backgroundColor = 'red'; |
| s.style.position = 'absolute'; |
| s.style.zIndex = '99999'; |
| Dom.setStyle(s, 'opacity', '0'); |
| this._shim = s; |
| Event.on(s, "mouseup", this.handleMouseUp, this, true); |
| Event.on(s, "mousemove", this.handleMouseMove, this, true); |
| Event.on(window, 'scroll', this._sizeShim, this, true); |
| }, |
| /** |
| * This method will size the shim, called from activate and on window scroll event |
| * @private |
| * @method _sizeShim |
| * @static |
| */ |
| _sizeShim: function() { |
| if (this._shimActive) { |
| var s = this._shim; |
| s.style.height = Dom.getDocumentHeight() + 'px'; |
| s.style.width = Dom.getDocumentWidth() + 'px'; |
| s.style.top = '0'; |
| s.style.left = '0'; |
| } |
| }, |
| /** |
| * This method will create the shim element if needed, then show the shim element, size the element and set the _shimActive property to true |
| * @private |
| * @method _activateShim |
| * @static |
| */ |
| _activateShim: function() { |
| if (this.useShim) { |
| if (!this._shim) { |
| this._createShim(); |
| } |
| this._shimActive = true; |
| var s = this._shim, |
| o = '0'; |
| if (this._debugShim) { |
| o = '.5'; |
| } |
| Dom.setStyle(s, 'opacity', o); |
| this._sizeShim(); |
| s.style.display = 'block'; |
| } |
| }, |
| /** |
| * This method will hide the shim element and set the _shimActive property to false |
| * @private |
| * @method _deactivateShim |
| * @static |
| */ |
| _deactivateShim: function() { |
| this._shim.style.display = 'none'; |
| this._shimActive = false; |
| }, |
| /** |
| * The HTML element created to use as a shim over the document to track mouse movements |
| * @private |
| * @property _shim |
| * @type HTMLElement |
| * @static |
| */ |
| _shim: null, |
| /** |
| * Two dimensional Array of registered DragDrop objects. The first |
| * dimension is the DragDrop item group, the second the DragDrop |
| * object. |
| * @property ids |
| * @type {string: string} |
| * @private |
| * @static |
| */ |
| ids: {}, |
| |
| /** |
| * Array of element ids defined as drag handles. Used to determine |
| * if the element that generated the mousedown event is actually the |
| * handle and not the html element itself. |
| * @property handleIds |
| * @type {string: string} |
| * @private |
| * @static |
| */ |
| handleIds: {}, |
| |
| /** |
| * the DragDrop object that is currently being dragged |
| * @property dragCurrent |
| * @type DragDrop |
| * @private |
| * @static |
| **/ |
| dragCurrent: null, |
| |
| /** |
| * the DragDrop object(s) that are being hovered over |
| * @property dragOvers |
| * @type Array |
| * @private |
| * @static |
| */ |
| dragOvers: {}, |
| |
| /** |
| * the X distance between the cursor and the object being dragged |
| * @property deltaX |
| * @type int |
| * @private |
| * @static |
| */ |
| deltaX: 0, |
| |
| /** |
| * the Y distance between the cursor and the object being dragged |
| * @property deltaY |
| * @type int |
| * @private |
| * @static |
| */ |
| deltaY: 0, |
| |
| /** |
| * Flag to determine if we should prevent the default behavior of the |
| * events we define. By default this is true, but this can be set to |
| * false if you need the default behavior (not recommended) |
| * @property preventDefault |
| * @type boolean |
| * @static |
| */ |
| preventDefault: true, |
| |
| /** |
| * Flag to determine if we should stop the propagation of the events |
| * we generate. This is true by default but you may want to set it to |
| * false if the html element contains other features that require the |
| * mouse click. |
| * @property stopPropagation |
| * @type boolean |
| * @static |
| */ |
| stopPropagation: true, |
| |
| /** |
| * Internal flag that is set to true when drag and drop has been |
| * initialized |
| * @property initialized |
| * @private |
| * @static |
| */ |
| initialized: false, |
| |
| /** |
| * All drag and drop can be disabled. |
| * @property locked |
| * @private |
| * @static |
| */ |
| locked: false, |
| |
| /** |
| * Provides additional information about the the current set of |
| * interactions. Can be accessed from the event handlers. It |
| * contains the following properties: |
| * |
| * out: onDragOut interactions |
| * enter: onDragEnter interactions |
| * over: onDragOver interactions |
| * drop: onDragDrop interactions |
| * point: The location of the cursor |
| * draggedRegion: The location of dragged element at the time |
| * of the interaction |
| * sourceRegion: The location of the source elemtn at the time |
| * of the interaction |
| * validDrop: boolean |
| * @property interactionInfo |
| * @type object |
| * @static |
| */ |
| interactionInfo: null, |
| |
| /** |
| * Called the first time an element is registered. |
| * @method init |
| * @private |
| * @static |
| */ |
| init: function() { |
| this.initialized = true; |
| }, |
| |
| /** |
| * In point mode, drag and drop interaction is defined by the |
| * location of the cursor during the drag/drop |
| * @property POINT |
| * @type int |
| * @static |
| * @final |
| */ |
| POINT: 0, |
| |
| /** |
| * In intersect mode, drag and drop interaction is defined by the |
| * cursor position or the amount of overlap of two or more drag and |
| * drop objects. |
| * @property INTERSECT |
| * @type int |
| * @static |
| * @final |
| */ |
| INTERSECT: 1, |
| |
| /** |
| * In intersect mode, drag and drop interaction is defined only by the |
| * overlap of two or more drag and drop objects. |
| * @property STRICT_INTERSECT |
| * @type int |
| * @static |
| * @final |
| */ |
| STRICT_INTERSECT: 2, |
| |
| /** |
| * The current drag and drop mode. Default: POINT |
| * @property mode |
| * @type int |
| * @static |
| */ |
| mode: 0, |
| |
| /** |
| * Runs method on all drag and drop objects |
| * @method _execOnAll |
| * @private |
| * @static |
| */ |
| _execOnAll: function(sMethod, args) { |
| for (var i in this.ids) { |
| for (var j in this.ids[i]) { |
| var oDD = this.ids[i][j]; |
| if (! this.isTypeOfDD(oDD)) { |
| continue; |
| } |
| oDD[sMethod].apply(oDD, args); |
| } |
| } |
| }, |
| |
| /** |
| * Drag and drop initialization. Sets up the global event handlers |
| * @method _onLoad |
| * @private |
| * @static |
| */ |
| _onLoad: function() { |
| |
| this.init(); |
| |
| Event.on(document, "mouseup", this.handleMouseUp, this, true); |
| Event.on(document, "mousemove", this.handleMouseMove, this, true); |
| Event.on(window, "unload", this._onUnload, this, true); |
| Event.on(window, "resize", this._onResize, this, true); |
| // Event.on(window, "mouseout", this._test); |
| |
| }, |
| |
| /** |
| * Reset constraints on all drag and drop objs |
| * @method _onResize |
| * @private |
| * @static |
| */ |
| _onResize: function(e) { |
| this._execOnAll("resetConstraints", []); |
| }, |
| |
| /** |
| * Lock all drag and drop functionality |
| * @method lock |
| * @static |
| */ |
| lock: function() { this.locked = true; }, |
| |
| /** |
| * Unlock all drag and drop functionality |
| * @method unlock |
| * @static |
| */ |
| unlock: function() { this.locked = false; }, |
| |
| /** |
| * Is drag and drop locked? |
| * @method isLocked |
| * @return {boolean} True if drag and drop is locked, false otherwise. |
| * @static |
| */ |
| isLocked: function() { return this.locked; }, |
| |
| /** |
| * Location cache that is set for all drag drop objects when a drag is |
| * initiated, cleared when the drag is finished. |
| * @property locationCache |
| * @private |
| * @static |
| */ |
| locationCache: {}, |
| |
| /** |
| * Set useCache to false if you want to force object the lookup of each |
| * drag and drop linked element constantly during a drag. |
| * @property useCache |
| * @type boolean |
| * @static |
| */ |
| useCache: true, |
| |
| /** |
| * The number of pixels that the mouse needs to move after the |
| * mousedown before the drag is initiated. Default=3; |
| * @property clickPixelThresh |
| * @type int |
| * @static |
| */ |
| clickPixelThresh: 3, |
| |
| /** |
| * The number of milliseconds after the mousedown event to initiate the |
| * drag if we don't get a mouseup event. Default=1000 |
| * @property clickTimeThresh |
| * @type int |
| * @static |
| */ |
| clickTimeThresh: 1000, |
| |
| /** |
| * Flag that indicates that either the drag pixel threshold or the |
| * mousdown time threshold has been met |
| * @property dragThreshMet |
| * @type boolean |
| * @private |
| * @static |
| */ |
| dragThreshMet: false, |
| |
| /** |
| * Timeout used for the click time threshold |
| * @property clickTimeout |
| * @type Object |
| * @private |
| * @static |
| */ |
| clickTimeout: null, |
| |
| /** |
| * The X position of the mousedown event stored for later use when a |
| * drag threshold is met. |
| * @property startX |
| * @type int |
| * @private |
| * @static |
| */ |
| startX: 0, |
| |
| /** |
| * The Y position of the mousedown event stored for later use when a |
| * drag threshold is met. |
| * @property startY |
| * @type int |
| * @private |
| * @static |
| */ |
| startY: 0, |
| |
| /** |
| * Flag to determine if the drag event was fired from the click timeout and |
| * not the mouse move threshold. |
| * @property fromTimeout |
| * @type boolean |
| * @private |
| * @static |
| */ |
| fromTimeout: false, |
| |
| /** |
| * Each DragDrop instance must be registered with the DragDropMgr. |
| * This is executed in DragDrop.init() |
| * @method regDragDrop |
| * @param {DragDrop} oDD the DragDrop object to register |
| * @param {String} sGroup the name of the group this element belongs to |
| * @static |
| */ |
| regDragDrop: function(oDD, sGroup) { |
| if (!this.initialized) { this.init(); } |
| |
| if (!this.ids[sGroup]) { |
| this.ids[sGroup] = {}; |
| } |
| this.ids[sGroup][oDD.id] = oDD; |
| }, |
| |
| /** |
| * Removes the supplied dd instance from the supplied group. Executed |
| * by DragDrop.removeFromGroup, so don't call this function directly. |
| * @method removeDDFromGroup |
| * @private |
| * @static |
| */ |
| 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); |
| |
| /** |
| * It seems that IE will fire the mouseup event if you pass a proxy element over a select box |
| * Placing the IFRAME element inside seems to stop this issue |
| */ |
| if (YAHOO.env.ua.ie) { |
| //Only needed for Internet Explorer |
| var ifr = document.createElement('iframe'); |
| ifr.setAttribute('src', 'javascript: false;'); |
| ifr.setAttribute('scrolling', 'no'); |
| ifr.setAttribute('frameborder', '0'); |
| div.insertBefore(ifr, div.firstChild); |
| Dom.setStyle(ifr, 'height', '100%'); |
| Dom.setStyle(ifr, 'width', '100%'); |
| Dom.setStyle(ifr, 'position', 'absolute'); |
| Dom.setStyle(ifr, 'top', '0'); |
| Dom.setStyle(ifr, 'left', '0'); |
| Dom.setStyle(ifr, 'opacity', '0'); |
| Dom.setStyle(ifr, 'zIndex', '-1'); |
| Dom.setStyle(ifr.nextSibling, 'zIndex', '2'); |
| } |
| |
| // 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: "2.6.0", build: "1321"}); |