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Diffstat (limited to 'web/build/dragdrop-debug.js')
| -rw-r--r-- | web/build/dragdrop-debug.js | 2517 |
1 files changed, 0 insertions, 2517 deletions
diff --git a/web/build/dragdrop-debug.js b/web/build/dragdrop-debug.js deleted file mode 100644 index 25d1c3c3d..000000000 --- a/web/build/dragdrop-debug.js +++ /dev/null @@ -1,2517 +0,0 @@ -/* -Copyright (c) 2006 Yahoo! Inc. All rights reserved. -version 0.9.0 -*/ - -/** - * @class 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> - * @constructor - * @param {String} id of the element that is linked to this instance - * @param {String} sGroup the group of related DragDrop objects - */ -YAHOO.util.DragDrop = function(id, sGroup) { - if (id) { - this.init(id, sGroup); - } -}; - -YAHOO.util.DragDrop.prototype = { - - /** - * 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. - * - * @type String - */ - id: 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 - * - * @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. - * - * @type String - * @private - */ - handleElId: null, - - /** - * An array of HTML tags that will be ignored if clicked. - */ - invalidHandleTypes: null, - - /** - * The linked element's absolute X position at the time the drag was - * started - * - * @type int - * @private - */ - startPageX: 0, - - /** - * The linked element's absolute X position at the time the drag was - * started - * - * @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. - * - */ - groups: null, - - /** - * Individual drag/drop instances can be locked. This will prevent - * onmousedown start drag. - * - * @type boolean - * @private - */ - locked: false, - - /** - * Lock this instance - */ - lock: function() { this.locked = true; }, - - /** - * Unlock this instace - */ - unlock: function() { this.locked = false; }, - - /** - * By default, all insances can be a drop target. This can be disabled by - * setting isTarget to false. - * - * @type boolean - */ - isTarget: true, - - /** - * The padding configured for this drag and drop object for calculating - * the drop zone intersection with this object. - */ - padding: null, - - /** - * @private - */ - _domRef: null, - - /** - * Internal typeof flag - * @private - */ - __ygDragDrop: true, - - /** - * Set to true when horizontal contraints are applied - * - * @type boolean - * @private - */ - constrainX: false, - - /** - * Set to true when vertical contraints are applied - * - * @type boolean - * @private - */ - constrainY: false, - - /** - * The left constraint - * - * @type int - * @private - */ - minX: 0, - - /** - * The right constraint - * - * @type int - * @private - */ - maxX: 0, - - /** - * The up constraint - * - * @type int - * @private - */ - minY: 0, - - /** - * The down constraint - * - * @type int - * @private - */ - maxY: 0, - - /** - * Maintain offsets when we resetconstraints. Used to maintain the - * slider thumb value, and this needs to be fixed. - * @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. - * @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. - * @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 - * @type boolean - */ - primaryButtonOnly: true, - - /** - * Code that executes immediately before the startDrag event - * @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. - * - * @param {int} X click location - * @param {int} Y click location - */ - startDrag: function(x, y) { /* override this */ }, - - /** - * Code that executes immediately before the onDrag event - * @private - */ - b4Drag: function(e) { }, - - /** - * Abstract method called during the onMouseMove event while dragging an - * object. - * - * @param {Event} e - */ - onDrag: function(e) { /* override this */ }, - - /** - * Code that executes immediately before the onDragEnter event - * @private - */ - // b4DragEnter: function(e) { }, - - /** - * Abstract method called when this element fist begins hovering over - * another DragDrop obj - * - * @param {Event} e - * @param {String || YAHOO.util.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 - * @private - */ - b4DragOver: function(e) { }, - - /** - * Abstract method called when this element is hovering over another - * DragDrop obj - * - * @param {Event} e - * @param {String || YAHOO.util.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 - * @private - */ - b4DragOut: function(e) { }, - - /** - * Abstract method called when we are no longer hovering over an element - * - * @param {Event} e - * @param {String || YAHOO.util.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 - * @private - */ - b4DragDrop: function(e) { }, - - /** - * Abstract method called when this item is dropped on another DragDrop - * obj - * - * @param {Event} e - * @param {String || YAHOO.util.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 */ }, - - /** - * Code that executes immediately before the endDrag event - * @private - */ - b4EndDrag: function(e) { }, - - /** - * Fired when we are done dragging the object - * - * @param {Event} e - */ - endDrag: function(e) { /* override this */ }, - - /** - * Code executed immediately before the onMouseDown event - - * @param {Event} e - * @private - */ - b4MouseDown: function(e) { }, - - /** - * Event handler that fires when a drag/drop obj gets a mousedown - * @param {Event} e - */ - onMouseDown: function(e) { /* override this */ }, - - /** - * Event handler that fires when a drag/drop obj gets a mouseup - * @param {Event} e - */ - onMouseUp: function(e) { /* override this */ }, - - /** - * Returns a reference to the linked element - * - * @return {Object} the html element - */ - getEl: function() { - if (!this._domRef) { - this._domRef = this.DDM.getElement(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 - * - * @return {Object} the html element - */ - getDragEl: function() { - return this.DDM.getElement(this.dragElId); - }, - - /** - * Sets up the DragDrop object. Must be called in the constructor of any - * YAHOO.util.DragDrop subclass - * - * @param id the id of the linked element - * @param {String} sGroup the group of related items - * element is supposed to be a target only, set to false. - */ - init: function(id, sGroup) { - this.initTarget(id, sGroup); - YAHOO.util.Event.addListener(id, "mousedown", - this.handleMouseDown, this, true); - }, - - /** - * Initializes Targeting functionality only... the object does not - * get a mousedown handler. - * - * @param id the id of the linked element - * @param {String} sGroup the group of related items - * element is supposed to be a target only, set to false. - */ - initTarget: function(id, sGroup) { - - // create a local reference to the drag and drop manager - this.DDM = YAHOO.util.DDM; - - // create a logger instance - this.logger = new ygLogger("DragDrop"); - - // set the default padding - this.padding = [0, 0, 0, 0]; - - // initialize the groups array - this.groups = {}; - - // set the id - this.id = id; - - // the element is a drag handle by default - this.setDragElId(id); - - // by default, clicked anchors will not start drag operations - this.invalidHandleTypes = {a : "a"}; - - // 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; - - // cache the position of the element if we can - if (document && document.body) { - this.setInitPosition(); - } - - // add to an interaction group - this.addToGroup((sGroup) ? sGroup : "default"); - - }, - - /** - * 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. - * @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 dd element - */ - setInitPosition: function(diffX, diffY) { - var el = this.getEl(); - - if (!this.DDM.verifyEl(el)) { - this.logger.debug(this.id + " element is broken"); - return; - } - - var dx = diffX || 0; - var dy = diffY || 0; - - var p = YAHOO.util.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. - * @param pos current position (from previous lookup) - * @private - */ - setStartPosition: function(pos) { - - var p = pos || YAHOO.util.Dom.getXY( this.getEl() ); - - 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. - * - * @param sGroup {string} the name of the group - */ - addToGroup: function(sGroup) { - this.groups[sGroup] = true; - this.DDM.regDragDrop(this, sGroup); - }, - - /** - * Allows you to specify that an element other than the linked element - * will be moved with the cursor during a drag - * - * @param id 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. - * - * @param id the id of the element that will be used to initiate the drag - */ - setHandleElId: function(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 - */ - setOuterHandleElId: function(id) { - this.logger.debug("Adding outer handle event: " + id); - YAHOO.util.Event.addListener(id, "mousedown", - this.handleMouseDown, this, true); - this.setHandleElId(id); - }, - - /** - * Remove all drag and drop hooks for this element - */ - unreg: function() { - this.logger.debug("DragDrop obj cleanup " + this.id); - YAHOO.util.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.) - * - * @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 - * - * @param {Event} e - * @param {YAHOO.util.DragDrop} oDD the clicked dd object (this dd obj) - * @private - */ - handleMouseDown: function(e, oDD) { - - this.logger.debug("isLocked: " + this.isLocked()); - - var EU = YAHOO.util.Event; - - - var button = e.which || e.button; - this.logger.debug("button: " + button); - - if (this.primaryButtonOnly && button > 1) { - this.logger.debug("Mousedown was not produced by the primary button"); - return; - } - - if (this.isLocked()) { - this.logger.debug("Drag and drop is disabled, aborting"); - return; - } - - this.logger.debug("mousedown " + this.id); - - this.DDM.refreshCache(this.groups); - - // 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(EU.getPageX(e), EU.getPageY(e)); - if ( this.DDM.isOverTarget(pt, this) ) { - - this.logger.debug("click is legit"); - - // check to see if the handle was clicked - var srcEl = EU.getTarget(e); - - if (this.isValidHandleChild(srcEl) && - (this.id == this.handleElId || - this.DDM.handleWasClicked(srcEl, this.id)) ) { - - // set the initial element position - this.setStartPosition(); - - this.logger.debug("firing onMouseDown events"); - - - this.b4MouseDown(e); - this.onMouseDown(e); - this.DDM.handleMouseDown(e, this); - - this.DDM.stopEvent(e); - } - } - }, - - /** - * 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. - * - * @param {string} tagName the type of element to exclude - */ - addInvalidHandleType: function(tagName) { - var type = tagName.toUpperCase(); - this.invalidHandleTypes[type] = type; - }, - - /** - * Unsets an excluded tag name set by addInvalidHandleType - * - * @param {string} tagName the type of element to unexclude - */ - removeInvalidHandleType: function(tagName) { - var type = tagName.toUpperCase(); - this.invalidHandleTypes[type] = null; - }, - - /** - * Checks the tag exclusion list to see if this click should be ignored - * - * @param {ygNode} node - * @return {boolean} true if this is a valid tag type, false if not - */ - isValidHandleChild: function(node) { - var type = node.nodeName; - - if (type == "#text") { - // this.logger.debug("text node, getting parent node type"); - type = node.parentNode.nodeName; - } - - return (!this.invalidHandleTypes[type]); - }, - - /** - * Create the array of horizontal tick marks if an interval was specified - * in setXConstraint(). - * - * @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) ; - this.logger.debug("xTicks: " + this.xTicks.join()); - }, - - /** - * Create the array of vertical tick marks if an interval was specified in - * setYConstraint(). - * - * @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) ; - this.logger.debug("yTicks: " + this.yTicks.join()); - }, - - /** - * 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. - * - * @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 = iLeft; - this.rightConstraint = iRight; - - this.minX = this.initPageX - iLeft; - this.maxX = this.initPageX + iRight; - if (iTickSize) { this.setXTicks(this.initPageX, iTickSize); } - - this.constrainX = true; - this.logger.debug("initPageX:" + this.initPageX + " minX:" + this.minX + - " maxX:" + this.maxX); - }, - - /** - * 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. - * - * @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 = iUp; - this.bottomConstraint = iDown; - - this.minY = this.initPageY - iUp; - this.maxY = this.initPageY + iDown; - if (iTickSize) { this.setYTicks(this.initPageY, iTickSize); } - - this.constrainY = true; - - this.logger.debug("initPageY:" + this.initPageY + " minY:" + this.minY + - " maxY:" + this.maxY); - }, - - /** - * resetConstraints must be called if you manually reposition a dd element. - * @param {boolean} maintainOffset - */ - resetConstraints: function() { - - // this.logger.debug("init pagexy: " + this.initPageX + ", " + - // this.initPageY); - // this.logger.debug("last pagexy: " + this.lastPageX + ", " + - // this.lastPageY); - - // 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.logger.debug("diff: " + dx + ", " + dy); - - // reset the initial location - this.setInitPosition(dx, dy); - - 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. - * - * @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; i < tickArray.length; ++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 - * @return {string} string representation of the dd obj - */ - toString: function(val, tickArray) { - return ("YAHOO.util.DragDrop {" + this.id + "}"); - } - -}; - -/* Copyright (c) 2006 Yahoo! Inc. All rights reserved. */ - -// Only load the library once. Rewriting the manager class would orphan -// existing drag and drop instances. -if (!YAHOO.util.DragDropMgr) { - - /** - * @class Handles 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. This class should not be instantiated; all methods - * are are static. - * - * @constructor - */ - YAHOO.util.DragDropMgr = new function() { - - /** - * utility package shorthand - * @private - */ - var UTIL = YAHOO.util; - - /** - * Two dimensional Array of registered DragDrop objects. The first - * dimension is the DragDrop item group, the second the DragDrop - * object. - * - * @private - */ - this.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. - * - * @private - */ - this.handleIds = {}; - - /** - * the DragDrop object that is currently being dragged - * - * @type DragDrop - * @private - **/ - this.dragCurrent = null; - - /** - * the DragDrop object(s) that are being hovered over - * - * @type Array - * @private - */ - this.dragOvers = {}; - - /** - * @private - */ - this.logger = null; - - /** - * the X distance between the cursor and the object being dragged - * - * @type int - * @private - */ - this.deltaX = 0; - - /** - * the Y distance between the cursor and the object being dragged - * - * @type int - * @private - */ - this.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) - * - * @type boolean - */ - this.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. - * - * @type boolean - */ - this.stopPropagation = true; - - /** - * @private - */ - this.initalized = false; - - /** - * All drag and drop can be disabled. - * - * @private - */ - this.locked = false; - - /** - * Called the first time an element is registered. - * - * @private - */ - this.init = function() { - this.logger = new ygLogger("DragDropMgr"); - }; - - /** - * In point mode, drag and drop interaction is defined by the - * location of the cursor during the drag/drop - * @type int - */ - this.POINT = 0; - - /** - * In intersect mode, drag and drop interactio nis defined by the - * overlap of two or more drag and drop objects. - * @type int - */ - this.INTERSECT = 1; - - /** - * The current drag and drop mode. Default it point mode - * @type int - */ - this.mode = this.POINT; - - /** - * Runs method on all drag and drop objects - * @private - */ - this._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 - * @private - */ - this._onLoad = function() { - - this._execOnAll("setInitPosition", []); - - this.logger = new ygLogger("DragDropMgr"); - this.logger.debug("DDM onload"); - - var EU = UTIL.Event; - - EU.addListener(document, "mouseup", this.handleMouseUp, this, true); - EU.addListener(document, "mousemove", this.handleMouseMove, this, true); - EU.addListener(window, "unload", this._onUnload, this, true); - EU.addListener(window, "resize", this._onResize, this, true); - // EU.addListener(window, "mouseout", this._test); - - this.initalized = true; - - }; - - /** - * Reset constraints on all drag and drop objs - * @private - */ - this._onResize = function(e) { - this.logger.debug("window resize"); - this._execOnAll("resetConstraints", []); - }; - - /** - * Lock all drag and drop functionality - */ - this.lock = function() { this.locked = true; }; - - /** - * Unlock all drag and drop functionality - */ - this.unlock = function() { this.locked = false; }; - - /** - * Is drag and drop locked? - * - * @return {boolean} True if drag and drop is locked, false otherwise. - */ - this.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. - * - * @private - */ - this.locationCache = {}; - - /** - * Set useCache to false if you want to force object the lookup of each - * drag and drop linked element constantly during a drag. - * @type boolean - */ - this.useCache = true; - - /** - * The number of pixels that the mouse needs to move after the - * mousedown before the drag is initiated. Default=3; - * @type int - */ - this.clickPixelThresh = 3; - - /** - * The number of milliseconds after the mousedown event to initiate the - * drag if we don't get a mouseup event. Default=1000 - * @type int - */ - this.clickTimeThresh = 1000; - - /** - * Flag that indicates that either the drag pixel threshold or the - * mousdown time threshold has been met - * @type boolean - * @private - */ - this.dragThreshMet = false; - - /** - * Timeout used for the click time threshold - * @type Object - * @private - */ - this.clickTimeout = null; - - /** - * The X position of the mousedown event stored for later use when a - * drag threshold is met. - * @type int - * @private - */ - this.startX = 0; - - /** - * The Y position of the mousedown event stored for later use when a - * drag threshold is met. - * @type int - * @private - */ - this.startY = 0; - - /** - * Each DragDrop instance must be registered with the DragDropMgr. - * This is executed in ygDragDrop.init() - * - * @param {DragDrop} oDD the DragDrop object to register - * @param {String} sGroup the name of the group this element belongs to - */ - this.regDragDrop = function(oDD, sGroup) { - if (!this.initialized) { this.init(); } - - if (!this.ids[sGroup]) { - this.ids[sGroup] = {}; - } - this.ids[sGroup][oDD.id] = oDD; - }; - - /** - * Unregisters a drag and drop item. This is executed in - * ygDragDrop.unreg, use that method instead of calling this directly. - * @private - */ - this._remove = function(oDD) { - for (var g in oDD.groups) { - if (g && this.ids[g][oDD.id]) { - delete this.ids[g][oDD.id]; - } - } - delete this.handleIds[oDD.id]; - }; - - /** - * Each DragDrop handle element must be registered. This is done - * automatically when executing ygDragDrop.setHandleElId() - * - * @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 - */ - this.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. - * - * @param {String} id the element id to check - * @return {boolean} true if this element is a DragDrop item, - * false otherwise - */ - this.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. - * - * @param {ygDragDrop} p_oDD the obj to get related data for - * @param {boolean} bTargetsOnly if true, only return targetable objs - * @return {ygDragDrop[]} the related instances - */ - this.getRelated = function(p_oDD, bTargetsOnly) { - var oDDs = []; - for (var i in p_oDD.groups) { - for (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 - * - * @param {ygDragDrop} the drag obj - * @param {ygDragDrop) the target - * @return {boolean} true if the target is a legal target for the - * dd obj - */ - this.isLegalTarget = function (oDD, oTargetDD) { - var targets = this.getRelated(oDD); - for (var i =0;i<targets.length;++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 ygDragDrop, and the exact subclass of ygDragDrop. typeof - * returns "object", oDD.constructor.toString() always returns - * "ygDragDrop" and not the name of the subclass. So for now it just - * evaluates a well-known variable in ygDragDrop. - * - * @param {Object} the object to evaluate - * @return {boolean} true if typeof oDD = ygDragDrop - */ - this.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. - * - * @param {String} id the element id to check - * @return {boolean} true if this element is a DragDrop handle, false - * otherwise - */ - this.isHandle = function(sDDId, sHandleId) { - return ( this.handleIds[sDDId] && - this.handleIds[sDDId][sHandleId] ); - }; - - /** - * Returns the DragDrop instance for a given id - * - * @param {String} id the id of the DragDrop object - * @return {DragDrop} the drag drop object, null if it is not found - */ - this.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 - * - * @param {Event} e the event - * @param oDD the DragDrop object being dragged - * @private - */ - this.handleMouseDown = function(e, oDD) { - this.logger.debug("mousedown - adding event handlers"); - this.dragCurrent = oDD; - - var el = oDD.getEl(); - - // track start position - this.startX = UTIL.Event.getPageX(e); - this.startY = UTIL.Event.getPageY(e); - - this.deltaX = this.startX - el.offsetLeft; - this.deltaY = this.startY - el.offsetTop; - - this.dragThreshMet = false; - - this.clickTimeout = setTimeout( - "var DDM=YAHOO.util.DDM;DDM.startDrag(DDM.startX, DDM.startY)", - this.clickTimeThresh ); - }; - - /** - * Fired when either the drag pixel threshol or the mousedown hold - * time threshold has been met. - * - * @param x {int} the X position of the original mousedown - * @param y {int} the Y position of the original mousedown - */ - this.startDrag = function(x, y) { - this.logger.debug("firing drag start events"); - clearTimeout(this.clickTimeout); - if (this.dragCurrent) { - this.dragCurrent.b4StartDrag(x, y); - this.dragCurrent.startDrag(x, y); - } - this.dragThreshMet = true; - }; - - /** - * Internal function to handle the mouseup event. Will be invoked - * from the context of the document. - * - * @param {Event} e the event - * @private - */ - this.handleMouseUp = function(e) { - - if (! this.dragCurrent) { - return; - } - - clearTimeout(this.clickTimeout); - - if (this.dragThreshMet) { - this.logger.debug("mouseup detected - completing drag"); - this.fireEvents(e, true); - } else { - this.logger.debug("drag threshold not met"); - } - - this.stopDrag(e); - - this.stopEvent(e); - }; - - /** - * Utility to stop event propagation and event default, if these - * features are turned on. - * - * @param {Event} e the event as returned by this.getEvent() - */ - this.stopEvent = function(e) { - if (this.stopPropagation) { - UTIL.Event.stopPropagation(e); - } - - if (this.preventDefault) { - UTIL.Event.preventDefault(e); - } - }; - - /** - * Internal function to clean up event handlers after the drag - * operation is complete - * - * @param {Event} e the event - * @private - */ - this.stopDrag = function(e) { - // this.logger.debug("mouseup - removing event handlers"); - - // Fire the drag end event for the item that was dragged - if (this.dragCurrent) { - if (this.dragThreshMet) { - this.logger.debug("firing endDrag events"); - this.dragCurrent.b4EndDrag(e); - this.dragCurrent.endDrag(e); - } - - this.logger.debug("firing onMouseUp event"); - this.dragCurrent.onMouseUp(e); - } - - 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. - * - * @param {Event} e the event - * @private - */ - this.handleMouseMove = function(e) { - if (! this.dragCurrent) { - // this.logger.debug("no current drag obj"); - return; - } - - // var button = e.which || e.button; - - this.logger.debug("which: " + e.which + ", button: "+ e.button); - - - // check for IE mouseup outside of page boundary - if (UTIL.Event.isIE && !e.button) { - this.stopEvent(e); - return this.handleMouseUp(e); - // this.logger.debug("button failure"); - } - - if (!this.dragThreshMet) { - var diffX = Math.abs(this.startX - UTIL.Event.getPageX(e)); - var diffY = Math.abs(this.startY - UTIL.Event.getPageY(e)); - // this.logger.debug("diffX: " + diffX + "diffY: " + diffY); - if (diffX > this.clickPixelThresh || - diffY > this.clickPixelThresh) { - this.logger.debug("pixel threshold met"); - this.startDrag(this.startX, this.startY); - } - } - - if (this.dragThreshMet) { - this.dragCurrent.b4Drag(e); - this.dragCurrent.onDrag(e); - this.fireEvents(e, false); - } - - this.stopEvent(e); - }; - - /** - * Iterates over all of the DragDrop elements to find ones we are - * hovering over or dropping on - * - * @param {Event} e the event - * @param {boolean} isDrop is this a drop op or a mouseover op? - * @private - */ - this.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 (!dc || dc.isLocked()) { - return; - } - - var x = UTIL.Event.getPageX(e); - var y = UTIL.Event.getPageY(e); - var pt = new YAHOO.util.Point(x,y); - - // cache the previous dragOver array - var oldOvers = []; - - var outEvts = []; - var overEvts = []; - var dropEvts = []; - var enterEvts = []; - - // Check to see if the object 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)) { - outEvts.push( ddo ); - } - - oldOvers[i] = true; - delete this.dragOvers[i]; - } - - for (var sGroup in dc.groups) { - // this.logger.debug("Processing group " + sGroup); - - 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)) { - // look for drop interactions - if (isDrop) { - dropEvts.push( oDD ); - // look for drag enter and drag over interactions - } else { - - // initial drag over: dragEnter fires - if (!oldOvers[oDD.id]) { - enterEvts.push( oDD ); - // subsequent drag overs: dragOver fires - } else { - overEvts.push( oDD ); - } - - this.dragOvers[oDD.id] = oDD; - } - } - } - } - } - - if (this.mode) { - if (outEvts.length > 0) { - dc.b4DragOut(e, outEvts); - dc.onDragOut(e, outEvts); - } - - if (enterEvts.length > 0) { - dc.onDragEnter(e, enterEvts); - } - - if (overEvts.length > 0) { - dc.b4DragOver(e, overEvts); - dc.onDragOver(e, overEvts); - } - - if (dropEvts.length > 0) { - dc.b4DragDrop(e, dropEvts); - dc.onDragDrop(e, dropEvts); - } - - } else { - // fire dragout events - for (i=0; i < outEvts.length; ++i) { - this.logger.debug(dc.id+" onDragOut: " + outEvts[i].id); - dc.b4DragOut(e, outEvts[i].id); - dc.onDragOut(e, outEvts[i].id); - } - - // fire enter events - for (i=0; i < enterEvts.length; ++i) { - this.logger.debug(dc.id + " dragEnter " + enterEvts[i].id); - // dc.b4DragEnter(e, oDD.id); - dc.onDragEnter(e, enterEvts[i].id); - } - - // fire over events - for (i=0; i < overEvts.length; ++i) { - this.logger.debug(dc.id + " dragOver " + overEvts[i].id); - dc.b4DragOver(e, overEvts[i].id); - dc.onDragOver(e, overEvts[i].id); - } - - // fire drop events - for (i=0; i < dropEvts.length; ++i) { - this.logger.debug(dc.id + " dragDrop " + dropEvts[i].id); - dc.b4DragDrop(e, dropEvts[i].id); - dc.onDragDrop(e, dropEvts[i].id); - } - - } - - }; - - /** - * 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. - * - * @param {ygDragDrop[]} dds The array of drag and drop objects - * targeted - * @return {ygDragDrop} The best single match - */ - this.getBestMatch = function(dds) { - var winner = null; - // Return null if the input is not what we expect - //if (!dds || !dds.length || dds.length == 0) { - // winner = null; - // If there is only one item, it wins - //} else if (dds.length == 1) { - - if (dds.length == 1) { - winner = dds[0]; - } else { - // Loop through the targeted items - for (var i=0; i<dds.length; ++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 (dd.cursorIsOver) { - winner = dd; - break; - // Otherwise the object with the most overlap wins - } else { - if (!winner || - 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 groups - * - * @param {Array} aGroups an associative array of groups to refresh - */ - this.refreshCache = function(aGroups) { - this.logger.debug("refreshing element location cache"); - for (sGroup in aGroups) { - if ("string" != typeof sGroup) { - continue; - } - for (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.logger.debug("something is wrong with the element"); - // this will unregister the drag and drop object if - // the element is not in a usable state - oDD.unreg(); - } - } - } - } - }; - - /** - * 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 - * @param {HTMLElement} el the element to check - * @return {boolean} true if the element looks usable - */ - this.verifyEl = function(el) { - try { - if (el) { - var parent = el.offsetParent; - if (parent) { - return true; - } - } - } catch(e) { - this.logger.debug("detected problem with an element"); - } - - return false; - }; - - /** - * Returns the an array containing the drag and drop element's position - * and size, including the ygDragDrop.padding configured for it - * - * @param {ygDragDrop} oDD the drag and drop object to get the - * location for - * @return array containing the top left and bottom right points of the - * element - */ - this.getLocation = function(oDD) { - if (! this.isTypeOfDD(oDD)) { - this.logger.debug(oDD + " is not a DD obj"); - return null; - } - - var el = oDD.getEl(); - - if (!this.verifyEl(el)) { - this.logger.debug(oDD + " element is not usable"); - return null; - } - - // this.logger.debug(oDD.id + " padding: " + oDD.padding); - - // var aPos = ygPos.getPos(el); - var aPos = YAHOO.util.Dom.getXY(el); - - x1 = aPos[0]; - x2 = x1 + el.offsetWidth; - - y1 = aPos[1]; - y2 = y1 + el.offsetHeight; - - var t = y1 - oDD.padding[0]; - var r = x2 + oDD.padding[1]; - var b = y2 + oDD.padding[2]; - var 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 - * - * @param {YAHOO.util.Point} pt The point to evaluate - * @param {ygDragDrop} oDDTarget the DragDrop object we are inspecting - * @return {boolean} true if the mouse is over the target - * @private - */ - this.isOverTarget = function(pt, oDDTarget, intersect) { - // use cache if available - var loc = this.locationCache[oDDTarget.id]; - if (!loc || !this.useCache) { - this.logger.debug("cache not populated"); - loc = this.getLocation(oDDTarget); - this.locationCache[oDDTarget.id] = loc; - - this.logger.debug("cache: " + loc); - } - - // this.logger.debug("isOverTarget: " + x + "," + y + ", " + loc); - - // var cursorIsOver = (x >= loc[3] && x <= loc[1] && y >= loc[0] && y <= loc[2]); - //oDDTarget.cursorIsOver = loc.contains( new YAHOO.util.Point(x, y) ); - oDDTarget.cursorIsOver = loc.contains( pt ); - oDDTarget.overlap = null; - - // if (this.INTERSECT == this.mode) { - if (intersect) { - - var curRegion = - YAHOO.util.Region.getRegion(this.dragCurrent.getDragEl()); - var overlap = curRegion.intersect(loc); - - if (overlap) { - oDDTarget.overlap = overlap; - return true; - } else { - return false; - } - - } else { - return oDDTarget.cursorIsOver; - } - }; - - /** - * @private - */ - this._onUnload = function(e, me) { - this.unregAll(); - }; - - /** - * Cleans up the drag and drop events and objects. - * - * @private - */ - this.unregAll = function() { - this.logger.debug("unregister all"); - - if (this.dragCurrent) { - this.stopDrag(); - this.dragCurrent = null; - } - - this._execOnAll("unreg", []); - - for (i in this.elementCache) { - delete this.elementCache[i]; - } - - this.elementCache = {}; - this.ids = {}; - }; - - /** - * A cache of DOM elements - * - * @private - */ - this.elementCache = {}; - - /** - * Get the wrapper for the DOM element specified - * - * @param {String} id the id of the elment to get - * @return {YAHOO.util.DDM.ElementWrapper} the wrapped element - * @private - */ - this.getElWrapper = function(id) { - var oWrapper = this.elementCache[id]; - if (!oWrapper || !oWrapper.el) { - // this.logger.debug("adding element cache: " + id); - oWrapper = this.elementCache[id] = - new this.ElementWrapper(document.getElementById(id)); - } - return oWrapper; - }; - - /** - * Returns the actual DOM element - * - * @param {String} id the id of the elment to get - * @return {Object} The element - */ - this.getElement = function(id) { - // return this.getElWrapper(id).el; - return document.getElementById(id); - }; - - /** - * Returns the style property for the DOM element (i.e., - * document.getElById(id).style) - * - * @param {String} id the id of the elment to get - * @return {Object} The style property of the element - */ - this.getCss = function(id) { - // return this.getElWrapper(id).css; - var css = null; - var el = document.getElementById(id); - if (el) { - css = el.style; - } - - return css; - }; - - /** - * Inner class for cached elements - */ - this.ElementWrapper = function(el) { - /** - * @private - */ - this.el = el || null; - /** - * @private - */ - this.id = this.el && el.id; - /** - * @private - */ - this.css = this.el && el.style; - }; - - /** - * Returns the X position of an html element - * @param el the element for which to get the position - * @return {int} the X coordinate - */ - this.getPosX = function(el) { - return YAHOO.util.Dom.getX(el); - }; - - /** - * Returns the Y position of an html element - * @param el the element for which to get the position - * @return {int} the Y coordinate - */ - this.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 - * - * @param n1 the first node to swap - * @param n2 the other node to swap - */ - this.swapNode = function(n1, n2) { - if (n1.swapNode) { - n1.swapNode(n2); - } else { - // the node reference order for the swap is a little tricky. - var p = n2.parentNode; - var s = n2.nextSibling; - n1.parentNode.replaceChild(n2,n1); - p.insertBefore(n1,s); - } - }; - - /** - * @private - */ - this.getScroll = function () { - var t, l; - if (document.documentElement && document.documentElement.scrollTop) { - t = document.documentElement.scrollTop; - l = document.documentElement.scrollLeft; - } else if (document.body) { - t = document.body.scrollTop; - l = document.body.scrollLeft; - } - return { top: t, left: l }; - }; - - /** - * Returns the specified element style property - * @param {HTMLElement} el the element - * @param {string} styleProp the style property - * @return {string} The value of the style property - */ - this.getStyle = function(el, styleProp) { - if (el.style.styleProp) { - return el.style.styleProp; - } else if (el.currentStyle) { - return el.currentStyle[styleProp]; - } else if (document.defaultView) { - return document.defaultView.getComputedStyle(el, null). - getPropertyValue(styleProp); - } - }; - - /** - * Gets the scrollTop - * - * @return {int} the document's scrollTop - */ - this.getScrollTop = function () { return this.getScroll().top; }; - - /** - * Gets the scrollLeft - * - * @return {int} the document's scrollTop - */ - this.getScrollLeft = function () { return this.getScroll().left; }; - - this.moveToEl = function (moveEl, targetEl) { - var aCoord = YAHOO.util.Dom.getXY(targetEl); - this.logger.debug("moveToEl: " + aCoord); - YAHOO.util.Dom.setXY(moveEl, aCoord); - }; - - /** - * Gets the client height - * - * @return {int} client height in px - */ - this.getClientHeight = function() { - return (window.innerHeight) ? window.innerHeight : - (document.documentElement && document.documentElement.clientHeight) ? - document.documentElement.clientHeight : document.body.offsetHeight; - }; - - /** - * Gets the client width - * - * @return {int} client width in px - */ - this.getClientWidth = function() { - return (window.innerWidth) ? window.innerWidth : - (document.documentElement && document.documentElement.clientWidth) ? - document.documentElement.clientWidth : document.body.offsetWidth; - }; - - /** - * numeric array sort function - */ - this.numericSort = function(a, b) { return (a - b); }; - - /** - * @private - */ - this._timeoutCount = 0; - - /** - * @private - * Trying to make the load order less important. Without this we get - * an error if this file is loaded before the Event Utility. - */ - this._addListeners = function() { - if ( UTIL.Event && - document && - document.body ) { - - this._onLoad(); - } else { - if (this._timeoutCount > 500) { - this.logger.debug("DragDrop requires the Event Utility"); - } else { - setTimeout("YAHOO.util.DDM._addListeners()", 10); - this._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. - * - * @param node the html element to inspect - */ - this.handleWasClicked = function(node, id) { - if (this.isHandle(id, node.id)) { - this.logger.debug("clicked node is a handle"); - return true; - } else { - // check to see if this is a text node child of the one we want - var p = node.parentNode; - // this.logger.debug("p: " + p); - - while (p) { - if (this.isHandle(id, p.id)) { - return true; - } else { - this.logger.debug(p.id + " is not a handle"); - p = p.parentNode; - } - } - } - - return false; - }; - - }; - - // shorter alias, save a few bytes - YAHOO.util.DDM = YAHOO.util.DragDropMgr; - YAHOO.util.DDM._addListeners(); - -} - -/* Copyright (c) 2006 Yahoo! Inc. All rights reserved. */ - -/** - * @class a DragDrop implementation where the linked element follows the - * mouse cursor. - * - * @extends DragDrop - * @constructor - * @param {String} id the id of the linked element - * @param {String} sGroup the group of related DragDrop items - */ -YAHOO.util.DD = function(id, sGroup) { - if (id) { - this.init(id, sGroup); - this.logger.setModuleName("DD"); - } -}; - -YAHOO.util.DD.prototype = new YAHOO.util.DragDrop(); - -/** - * Should we auto-scroll? Defaults to true - * - * @type boolean - */ -YAHOO.util.DD.prototype.scroll = true; - -/** - * Sets the pointer offset to the distance between the linked element's top - * left corner and the location the element was clicked - * - * @param {int} iPageX the X coordinate of the click - * @param {int} iPageY the Y coordinate of the click - */ -YAHOO.util.DD.prototype.autoOffset = function(iPageX, iPageY) { - var el = this.getEl(); - var aCoord = YAHOO.util.Dom.getXY(el); - var x = iPageX - aCoord[0]; - var y = iPageY - aCoord[1]; - this.setDelta(x, y); - this.logger.debug("autoOffset el pos: " + aCoord + ", delta: " + 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 ygDDSliderBG) - * - * @param {int} iDeltaX the distance from the left - * @param {int} iDeltaY the distance from the top - */ -YAHOO.util.DD.prototype.setDelta = function(iDeltaX, iDeltaY) { - this.deltaX = iDeltaX; - this.deltaY = iDeltaY; - this.logger.debug("deltaX:" + this.deltaX + ", deltaY:" + this.deltaY); -}; - -/** - * 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. - * - * @param {int} iPageX the X coordinate of the mousedown or drag event - * @param {int} iPageY the Y coordinate of the mousedown or drag event - */ - -YAHOO.util.DD.prototype.setDragElPos = function(iPageX, iPageY) { - this.alignElWithMouse(this.getDragEl(), 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. - * - * @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 - */ -YAHOO.util.DD.prototype.alignElWithMouse = function(el, iPageX, iPageY) { - var oCoord = this.getTargetCoord(iPageX, iPageY); - var aCoord = [oCoord.x, oCoord.y]; - // this.logger.debug("****alignElWithMouse : " + el.id + ", " + aCoord + ", " + el.style.display); - YAHOO.util.Dom.setXY(el, aCoord); - - this.cachePosition(oCoord.x, oCoord.y); - - this.autoScroll(oCoord.x, oCoord.y, el.offsetHeight, el.offsetWidth); -}; - -/** - * 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. - */ -YAHOO.util.DD.prototype.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. - * - * @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 - */ -YAHOO.util.DD.prototype.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); - - // this.logger.debug( " x: " + x + " y: " + y + " h: " + h + - // " clientH: " + clientH + " clientW: " + clientW + - // " st: " + st + " sl: " + sl + " bot: " + bot + - // " right: " + right + " toBot: " + toBot + " toRight: " + toRight); - - // 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); - } - } -}; - -/** - * 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. - * - * @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 - */ -YAHOO.util.DD.prototype.getTargetCoord = function(iPageX, iPageY) { - - // this.logger.debug("getTargetCoord: " + 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); - - // this.logger.debug("getTargetCoord " + - // " iPageX: " + iPageX + - // " iPageY: " + iPageY + - // " x: " + x + ", y: " + y); - - return {x:x, y:y}; -}; - -// overrides YAHOO.util.DragDrop -YAHOO.util.DD.prototype.b4MouseDown = function(e) { - // this.resetConstraints(); - this.autoOffset(YAHOO.util.Event.getPageX(e), - YAHOO.util.Event.getPageY(e)); -}; - -// overrides YAHOO.util.DragDrop -YAHOO.util.DD.prototype.b4Drag = function(e) { - this.setDragElPos(YAHOO.util.Event.getPageX(e), - YAHOO.util.Event.getPageY(e)); -}; - - -/////////////////////////////////////////////////////////////////////////////// -// Debugging ygDragDrop events that can be overridden -/////////////////////////////////////////////////////////////////////////////// -/* -YAHOO.util.DD.prototype.startDrag = function(x, y) { - this.logger.debug(this.id.toString() + " startDrag"); -}; - -YAHOO.util.DD.prototype.onDrag = function(e) { - this.logger.debug(this.id.toString() + " onDrag"); -}; - -YAHOO.util.DD.prototype.onDragEnter = function(e, id) { - this.logger.debug(this.id.toString() + " onDragEnter: " + id); -}; - -YAHOO.util.DD.prototype.onDragOver = function(e, id) { - this.logger.debug(this.id.toString() + " onDragOver: " + id); -}; - -YAHOO.util.DD.prototype.onDragOut = function(e, id) { - this.logger.debug(this.id.toString() + " onDragOut: " + id); -}; - -YAHOO.util.DD.prototype.onDragDrop = function(e, id) { - this.logger.debug(this.id.toString() + " onDragDrop: " + id); -}; - -YAHOO.util.DD.prototype.endDrag = function(e) { - this.logger.debug(this.id.toString() + " endDrag"); -}; -*/ - -/* Copyright (c) 2006 Yahoo! Inc. All rights reserved. */ - -/** - * @class 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. - * - * @extends YAHOO.util.DD - * @constructor - * @param {String} id the id of the linked html element - * @param {String} sGroup the group of related DragDrop objects - */ -YAHOO.util.DDProxy = function(id, sGroup) { - if (id) { - this.init(id, sGroup); - this.initFrame(); - this.logger.setModuleName("DDProxy"); - } -}; - -YAHOO.util.DDProxy.prototype = new YAHOO.util.DD(); - -/** - * A reference to the one div element we create for all instances of this class - * - * @type Object - */ -YAHOO.util.DDProxy.frameDiv = null; - -/** - * the drag frame div id - * - * @type String - */ -YAHOO.util.DDProxy.dragElId = "ygddfdiv"; - -/** - * The border width of the frame. This is used when we resize the frame to - * the size of the linked element. We substract the border width to make - * the div the correct size. - * - * @TODO find a better way to handle this - * - * @type int - */ -YAHOO.util.DDProxy.prototype.borderWidth = 2; - -/** - * 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 (ex: ygDDMy2) - * - * @type boolean - */ -YAHOO.util.DDProxy.prototype.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. Ex: - * ygDDMy2 - * - * @type boolean - */ -YAHOO.util.DDProxy.prototype.centerFrame = false; - -/** - * Create the drag frame if needed - */ -YAHOO.util.DDProxy.createFrame = function() { - var THIS = YAHOO.util.DDProxy; - - if (!document || !document.body) { - setTimeout(THIS.createFrame, 50); - return; - } - - if (!THIS.frameDiv) { - THIS.frameDiv = document.createElement("div"); - THIS.frameDiv.id = THIS.dragElId; - var s = THIS.frameDiv.style; - s.position = "absolute"; - s.visibility = "hidden"; - s.cursor = "move"; - s.border = "2px solid #aaa"; - s.zIndex = 999; - - document.body.appendChild(THIS.frameDiv); - } -}; - -/** - * Initialization for the drag frame element. Must be called in the - * constructor of all subclasses - */ -YAHOO.util.DDProxy.prototype.initFrame = function() { - YAHOO.util.DDProxy.createFrame(); - this.setDragElId(YAHOO.util.DDProxy.dragElId); - this.useAbsMath = true; -}; - -/** - * Resizes the drag frame to the dimensions of the clicked object, positions - * it over the object, and finally displays it - * - * @param {int} iPageX X click position - * @param {int} iPageY Y click position - * @private - */ -YAHOO.util.DDProxy.prototype.showFrame = function(iPageX, iPageY) { - var el = this.getEl(); - - var s = this.getDragEl().style; - - if (this.resizeFrame) { - s.width = (parseInt(el.offsetWidth) - (2*this.borderWidth)) + "px"; - s.height = (parseInt(el.offsetHeight) - (2*this.borderWidth)) + "px"; - } - - if (this.centerFrame) { - this.setDelta(Math.round(parseInt(s.width)/2), - Math.round(parseInt(s.width)/2)); - } - - this.setDragElPos(iPageX, iPageY); - - s.visibility = ""; -}; - -// overrides YAHOO.util.DragDrop -YAHOO.util.DDProxy.prototype.b4MouseDown = function(e) { - var x = YAHOO.util.Event.getPageX(e); - var y = YAHOO.util.Event.getPageY(e); - this.autoOffset(x, y); - this.setDragElPos(x, y); -}; - -// overrides YAHOO.util.DragDrop -YAHOO.util.DDProxy.prototype.b4StartDrag = function(x, y) { - // show the drag frame - this.logger.debug("start drag show frame, x: " + x + ", y: " + y); - this.showFrame(x, y); -}; - -// overrides YAHOO.util.DragDrop -YAHOO.util.DDProxy.prototype.b4EndDrag = function(e) { - this.logger.debug(this.id + " b4EndDrag"); - - // hide the drag frame - var s = this.getDragEl().style; - s.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. -YAHOO.util.DDProxy.prototype.endDrag = function(e) { - this.logger.debug(this.id + " endDrag"); - var lel = this.getEl(); - var del = this.getDragEl(); - - // Show the drag frame briefly so we can get its position - del.style.visibility = ""; - - // Hide the linked element before the move to get around a Safari - // rendering bug. - lel.style.visibility = "hidden"; - YAHOO.util.DDM.moveToEl(lel, del); - del.style.visibility = "hidden"; - lel.style.visibility = ""; -}; - -/* Copyright (c) 2006 Yahoo! Inc. All rights reserved. */ - -/** - * @class 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. - * - * @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 - */ - -YAHOO.util.DDTarget = function(id, sGroup) { - if (id) { - this.initTarget(id, sGroup); - this.logger.setModuleName("DDTarget"); - } -}; - -YAHOO.util.DDTarget.prototype = new YAHOO.util.DragDrop(); - |