/*
 * These classes are derivatives of the similarly named classes in the YUI Library.
 * The original license:
 * Copyright (c) 2006, Yahoo! Inc. All rights reserved.
 * Code licensed under the BSD License:
 * http://developer.yahoo.net/yui/license.txt
 */

(function() {

var Event=Ext.EventManager;
var Dom=Ext.lib.Dom;

/** * @class Ext.dd.DragDrop * 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 and onDragOut. * Up to three html elements can be associated with a DragDrop instance: * * 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: *
 *  dd = new Ext.dd.DragDrop("div1", "group1");
 * 
* 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... *
 *  dd.onDragDrop = function(e, id) {
 *    alert("dd was dropped on " + id);
 *  }
 * 
* @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 */ Ext.dd.DragDrop = function(id, sGroup, config) { if(id) { this.init(id, sGroup, config); } }; Ext.dd.DragDrop.prototype = {
/** * Set to false to enable a DragDrop object to fire drag events while dragging * over its own Element. Defaults to true - DragDrop objects do not by default * fire drag events to themselves. * @property ignoreSelf * @type Boolean */
/** * 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: * Ext.dd.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 object who's property names identify HTML tags to be considered invalid as drag handles. * A non-null property value identifies the tag as invalid. Defaults to the * following value which prevents drag operations from being initiated by <a> elements:

{
    A: "A"
}
* @property invalidHandleTypes * @type Object */ invalidHandleTypes: null,
/** * An object who's property names identify the IDs of elements to be considered invalid as drag handles. * A non-null property value identifies the ID as invalid. For example, to prevent * dragging from being initiated on element ID "foo", use:

{
    foo: true
}
* @property invalidHandleIds * @type Object */ invalidHandleIds: null,
/** * An Array of CSS class names for elements to be considered in valid as drag handles. * @property invalidHandleClasses * @type Array */ 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 object An object in the format {'group1':true, 'group2':true} */ 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; },
/** * When set to true, other DD objects in cooperating DDGroups do not receive * notification events when this DD object is dragged over them. Defaults to false. * @property moveOnly * @type boolean */ moveOnly: false,
/** * 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[] An array containing the 4 padding values: [top, right, bottom, left] */ padding: null, /** * 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,
/** * 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, /** * 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 () { },
/** * Provides default constraint padding to "constrainTo" elements (defaults to {left: 0, right:0, top:0, bottom:0}). * @type Object */ defaultPadding : {left:0, right:0, top:0, bottom:0},
/** * Initializes the drag drop object's constraints to restrict movement to a certain element. * * Usage:

 var dd = new Ext.dd.DDProxy("dragDiv1", "proxytest",
                { dragElId: "existingProxyDiv" });
 dd.startDrag = function(){
     this.constrainTo("parent-id");
 };
 
* Or you can initalize it using the {@link Ext.Element} object:

 Ext.get("dragDiv1").initDDProxy("proxytest", {dragElId: "existingProxyDiv"}, {
     startDrag : function(){
         this.constrainTo("parent-id");
     }
 });
 
* @param {Mixed} constrainTo The element to constrain to. * @param {Object/Number} pad (optional) Pad provides a way to specify "padding" of the constraints, * and can be either a number for symmetrical padding (4 would be equal to {left:4, right:4, top:4, bottom:4}) or * an object containing the sides to pad. For example: {right:10, bottom:10} * @param {Boolean} inContent (optional) Constrain the draggable in the content box of the element (inside padding and borders) */ constrainTo : function(constrainTo, pad, inContent){ if(typeof pad == "number"){ pad = {left: pad, right:pad, top:pad, bottom:pad}; } pad = pad || this.defaultPadding; var b = Ext.get(this.getEl()).getBox(); var ce = Ext.get(constrainTo); var s = ce.getScroll(); var c, cd = ce.dom; if(cd == document.body){ c = { x: s.left, y: s.top, width: Ext.lib.Dom.getViewWidth(), height: Ext.lib.Dom.getViewHeight()}; }else{ var xy = ce.getXY(); c = {x : xy[0]+s.left, y: xy[1]+s.top, width: cd.clientWidth, height: cd.clientHeight}; } var topSpace = b.y - c.y; var leftSpace = b.x - c.x; this.resetConstraints(); this.setXConstraint(leftSpace - (pad.left||0), // left c.width - leftSpace - b.width - (pad.right||0), //right this.xTickSize ); this.setYConstraint(topSpace - (pad.top||0), //top c.height - topSpace - b.height - (pad.bottom||0), //bottom this.yTickSize ); },
/** * Returns a reference to the linked element * @method getEl * @return {HTMLElement} the html element */ getEl: function() { if (!this._domRef) { this._domRef = Ext.getDom(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 Ext.dd.DDProxy * @method getDragEl * @return {HTMLElement} the html element */ getDragEl: function() { return Ext.getDom(this.dragElId); },
/** * Sets up the DragDrop object. Must be called in the constructor of any * Ext.dd.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.id, "mousedown", this.handleMouseDown, this); // Event.on(this.id, "selectstart", Event.preventDefault); },
/** * 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 || {}; // create a local reference to the drag and drop manager this.DDM = Ext.dd.DDM; // initialize the groups array this.groups = {}; // assume that we have an element reference instead of an id if the // parameter is not a string if (typeof id !== "string") { id = Ext.id(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; // the linked element is the element that gets dragged by default this.setDragElId(id); // by default, clicked anchors will not start drag operations. this.invalidHandleTypes = { A: "A" }; this.invalidHandleIds = {}; this.invalidHandleClasses = []; this.applyConfig(); this.handleOnAvailable(); },
/** * 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() { // 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); }, /** * 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 setInitPosition * @param {int} diffX the X offset, default 0 * @param {int} diffY the Y offset, default 0 */ setInitPosition: function(diffX, diffY) { var el = this.getEl(); if (!this.DDM.verifyEl(el)) { 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 = Ext.id(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 = Ext.id(id); } Event.on(id, "mousedown", this.handleMouseDown, this); this.setHandleElId(id); this.hasOuterHandles = true; },
/** * Remove all drag and drop hooks for this element * @method unreg */ unreg: function() { Event.un(this.id, "mousedown", this.handleMouseDown); this._domRef = null; this.DDM._remove(this); }, destroy : function(){ this.unreg(); },
/** * 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 {Ext.dd.DragDrop} oDD the clicked dd object (this dd obj) * @private */ handleMouseDown: function(e, oDD){ if (this.primaryButtonOnly && e.button != 0) { return; } if (this.isLocked()) { return; } this.DDM.refreshCache(this.groups); var pt = new Ext.lib.Point(Ext.lib.Event.getPageX(e), Ext.lib.Event.getPageY(e)); if (!this.hasOuterHandles && !this.DDM.isOverTarget(pt, this) ) { } else { if (this.clickValidator(e)) { // set the initial element position this.setStartPosition(); this.b4MouseDown(e); this.onMouseDown(e); this.DDM.handleMouseDown(e, this); this.DDM.stopEvent(e); } else { } } }, clickValidator: function(e) { var target = e.getTarget(); return ( this.isValidHandleChild(target) && (this.id == this.handleElId || this.DDM.handleWasClicked(target, this.id)) ); },
/** * 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 = Ext.id(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 = Ext.id(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/** * 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= 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 = iLeft; this.rightConstraint = iRight; this.minX = this.initPageX - iLeft; this.maxX = this.initPageX + iRight; 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 = iUp; this.bottomConstraint = iDown; this.minY = this.initPageY - iUp; this.maxY = this.initPageY + iDown; if (iTickSize) { this.setYTicks(this.initPageY, iTickSize); } this.constrainY = true; },
/** * resetConstraints must be called if you manually reposition a dd element. * @method resetConstraints * @param {boolean} maintainOffset */ 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= 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); } }; })();
/** * 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. */ // Only load the library once. Rewriting the manager class would orphan // existing drag and drop instances. if (!Ext.dd.DragDropMgr) {
/** * @class Ext.dd.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. * @singleton */ Ext.dd.DragDropMgr = function() { var Event = Ext.EventManager; return { /** * 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 * intialized * @property initialized * @private * @static */ initialized: false, /** * All drag and drop can be disabled. * @property locked * @private * @static */ locked: false, /** * 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 */ POINT: 0,
/** * In intersect mode, drag and drop interaction is defined by the * overlap of two or more drag and drop objects. * @property INTERSECT * @type int * @static */ INTERSECT: 1,
/** * 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: 350, /** * 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,
/** * 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 && this.ids[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 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/** * 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) { if(Ext.QuickTips){ Ext.QuickTips.disable(); } if(this.dragCurrent){ // the original browser mouseup wasn't handled (e.g. outside FF browser window) // so clean up first to avoid breaking the next drag this.handleMouseUp(e); } this.currentTarget = e.getTarget(); this.dragCurrent = oDD; var el = oDD.getEl(); // track start position this.startX = e.getPageX(); this.startY = e.getPageY(); this.deltaX = this.startX - el.offsetLeft; this.deltaY = this.startY - el.offsetTop; this.dragThreshMet = false; this.clickTimeout = setTimeout( function() { var DDM = Ext.dd.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. * @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) { 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. * @method handleMouseUp * @param {Event} e the event * @private * @static */ handleMouseUp: function(e) { if(Ext.QuickTips){ Ext.QuickTips.enable(); } if (! this.dragCurrent) { return; } clearTimeout(this.clickTimeout); if (this.dragThreshMet) { 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) { e.stopPropagation(); } if (this.preventDefault) { e.preventDefault(); } }, /** * Internal function to clean up event handlers after the drag * operation is complete * @method stopDrag * @param {Event} e the event * @private * @static */ stopDrag: function(e) { // Fire the drag end event for the item that was dragged if (this.dragCurrent) { if (this.dragThreshMet) { this.dragCurrent.b4EndDrag(e); this.dragCurrent.endDrag(e); } 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. * @method handleMouseMove * @param {Event} e the event * @private * @static */ handleMouseMove: function(e) { if (! this.dragCurrent) { return true; } // var button = e.which || e.button; // check for IE mouseup outside of page boundary if (Ext.isIE && (e.button !== 0 && e.button !== 1 && e.button !== 2)) { this.stopEvent(e); return this.handleMouseUp(e); } if (!this.dragThreshMet) { var diffX = Math.abs(this.startX - e.getPageX()); var diffY = Math.abs(this.startY - e.getPageY()); if (diffX > this.clickPixelThresh || diffY > this.clickPixelThresh) { this.startDrag(this.startX, this.startY); } } if (this.dragThreshMet) { this.dragCurrent.b4Drag(e); this.dragCurrent.onDrag(e); if(!this.dragCurrent.moveOnly){ this.fireEvents(e, false); } } this.stopEvent(e); return true; }, /** * 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 (!dc || dc.isLocked()) { return; } var pt = e.getPoint(); // cache the previous dragOver array var oldOvers = []; var outEvts = []; var overEvts = []; var dropEvts = []; var 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)) { 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) || (dc.ignoreSelf === false))) { 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) { dc.b4DragOut(e, outEvts); dc.onDragOut(e, outEvts); } if (enterEvts.length) { dc.onDragEnter(e, enterEvts); } if (overEvts.length) { dc.b4DragOver(e, overEvts); dc.onDragOver(e, overEvts); } if (dropEvts.length) { dc.b4DragDrop(e, dropEvts); dc.onDragDrop(e, dropEvts); } } else { // fire dragout events var len = 0; for (i=0, len=outEvts.length; i/** * 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; // 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) { var len = dds.length; if (len == 1) { winner = dds[0]; } else { // Loop through the targeted items for (var i=0; i/** * 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: * * Ext.dd.DragDropMgr.refreshCache(ddinstance.groups); * * Alternatively: * * Ext.dd.DragDropMgr.refreshCache({group1:true, group2:true}); * * @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) { for (var sGroup in groups) { if ("string" != typeof sGroup) { continue; } for (var i in this.ids[sGroup]) { var oDD = this.ids[sGroup][i]; if (this.isTypeOfDD(oDD)) { // if (this.isTypeOfDD(oDD) && oDD.isTarget) { var loc = this.getLocation(oDD); if (loc) { this.locationCache[oDD.id] = loc; } else { delete this.locationCache[oDD.id]; // 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 * @method verifyEl * @param {HTMLElement} el the element to check * @return {boolean} true if the element looks usable * @static */ verifyEl: function(el) { if (el) { var parent; if(Ext.isIE){ try{ parent = el.offsetParent; }catch(e){} }else{ parent = el.offsetParent; } if (parent) { return true; } } 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 {Ext.lib.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= Ext.lib.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 Ext.lib.Region( t, r, b, l ); }, /** * Checks the cursor location to see if it over the target * @method isOverTarget * @param {Ext.lib.Point} pt The point to evaluate * @param {DragDrop} oTarget the DragDrop object we are inspecting * @return {boolean} true if the mouse is over the target * @private * @static */ isOverTarget: function(pt, oTarget, intersect) { // 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 also done. Otherwise we need to evaluate the // location of the target as related to the actual location of the // dragged element. var dc = this.dragCurrent; if (!dc || !dc.getTargetCoord || (!intersect && !dc.constrainX && !dc.constrainY)) { 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. var pos = dc.getTargetCoord(pt.x, pt.y); var el = dc.getDragEl(); var curRegion = new Ext.lib.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) { Ext.dd.DragDropMgr.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 */ elementCache: {}, /** * Get the wrapper for the DOM element specified * @method getElWrapper * @param {String} id the id of the element to get * @return {Ext.dd.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(Ext.getDom(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 Ext.lib.Ext.getDom instead * @static */ getElement: function(id) { return Ext.getDom(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 Ext.lib.Dom instead * @static */ getCss: function(id) { var el = Ext.getDom(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 Ext.lib.Dom.getX instead * @static */ getPosX: function(el) { return Ext.lib.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 Ext.lib.Dom.getY instead * @static */ getPosY: function(el) { return Ext.lib.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 Ext.lib.Dom.getStyle * @static */ getStyle: function(el, styleProp) { return Ext.fly(el).getStyle(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 = Ext.lib.Dom.getXY(targetEl); Ext.lib.Dom.setXY(moveEl, aCoord); },
/** * 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 = Ext.dd.DDM; if ( Ext.lib.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 Ext.dd.DDM = Ext.dd.DragDropMgr; Ext.dd.DDM._addListeners(); }
/** * @class Ext.dd.DD * A DragDrop implementation where the linked element follows the * mouse cursor during a drag. * @extends Ext.dd.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 */ Ext.dd.DD = function(id, sGroup, config) { if (id) { this.init(id, sGroup, config); } }; Ext.extend(Ext.dd.DD, Ext.dd.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) * @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); var fly = el.dom ? el : Ext.fly(el, '_dd'); if (!this.deltaSetXY) { var aCoord = [oCoord.x, oCoord.y]; fly.setXY(aCoord); var newLeft = fly.getLeft(true); var newTop = fly.getTop(true); this.deltaSetXY = [ newLeft - oCoord.x, newTop - oCoord.y ]; } else { fly.setLeftTop(oCoord.x + this.deltaSetXY[0], oCoord.y + this.deltaSetXY[1]); } this.cachePosition(oCoord.x, oCoord.y); this.autoScroll(oCoord.x, oCoord.y, el.offsetHeight, el.offsetWidth); return oCoord; },
/** * 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 = Ext.lib.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 = Ext.lib.Dom.getViewHeight(); // The client width var clientW = Ext.lib.Dom.getViewWidth(); // 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); } } }, /** * 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}; },
/** * Sets up config options specific to this class. Overrides * Ext.dd.DragDrop, but all versions of this method through the * inheritance chain are called */ applyConfig: function() { Ext.dd.DD.superclass.applyConfig.call(this); this.scroll = (this.config.scroll !== false); },
/** * Event that fires prior to the onMouseDown event. Overrides * Ext.dd.DragDrop. */ b4MouseDown: function(e) { // this.resetConstraints(); this.autoOffset(e.getPageX(), e.getPageY()); },
/** * Event that fires prior to the onDrag event. Overrides * Ext.dd.DragDrop. */ b4Drag: function(e) { this.setDragElPos(e.getPageX(), e.getPageY()); }, 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) { } */ });
/** * @class Ext.dd.DDProxy * 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. * * @extends Ext.dd.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 */ Ext.dd.DDProxy = function(id, sGroup, config) { if (id) { this.init(id, sGroup, config); this.initFrame(); } };
/** * The default drag frame div id * @property Ext.dd.DDProxy.dragElId * @type String * @static */ Ext.dd.DDProxy.dragElId = "ygddfdiv"; Ext.extend(Ext.dd.DDProxy, Ext.dd.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 Ext.dd.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; var body = document.body; if (!body || !body.firstChild) { setTimeout( function() { self.createFrame(); }, 50 ); return; } var div = this.getDragEl(); 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; // 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() { Ext.dd.DDProxy.superclass.applyConfig.call(this); this.resizeFrame = (this.config.resizeFrame !== false); this.centerFrame = (this.config.centerFrame); this.setDragElId(this.config.dragElId || Ext.dd.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); Ext.fly(dragEl).show(); }, /** * 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 el = this.getEl(); Ext.fly(this.getDragEl()).setSize(el.offsetWidth, el.offsetHeight); } }, // overrides Ext.dd.DragDrop b4MouseDown: function(e) { var x = e.getPageX(); var y = e.getPageY(); this.autoOffset(x, y); this.setDragElPos(x, y); }, // overrides Ext.dd.DragDrop b4StartDrag: function(x, y) { // show the drag frame this.showFrame(x, y); }, // overrides Ext.dd.DragDrop b4EndDrag: function(e) { Ext.fly(this.getDragEl()).hide(); }, // overrides Ext.dd.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 Ext.dd.DD. endDrag: function(e) { var lel = this.getEl(); var del = this.getDragEl(); // Show the drag frame briefly so we can get its position del.style.visibility = ""; this.beforeMove(); // Hide the linked element before the move to get around a Safari // rendering bug. lel.style.visibility = "hidden"; Ext.dd.DDM.moveToEl(lel, del); del.style.visibility = "hidden"; lel.style.visibility = ""; this.afterDrag(); }, beforeMove : function(){ }, afterDrag : function(){ }, toString: function() { return ("DDProxy " + this.id); } });
/** * @class Ext.dd.DDTarget * 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 Ext.dd.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 */ Ext.dd.DDTarget = function(id, sGroup, config) { if (id) { this.initTarget(id, sGroup, config); } }; // Ext.dd.DDTarget.prototype = new Ext.dd.DragDrop(); Ext.extend(Ext.dd.DDTarget, Ext.dd.DragDrop, { toString: function() { return ("DDTarget " + this.id); } });