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// script.aculo.us dragdrop.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008
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// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
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// (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
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// script.aculo.us is freely distributable under the terms of an MIT-style license.
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// For details, see the script.aculo.us web site: http://script.aculo.us/
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if(Object.isUndefined(Effect))
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throw("dragdrop.js requires including script.aculo.us' effects.js library");
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remove: function(element) {
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this.drops = this.drops.reject(function(d) { return d.element==$(element) });
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add: function(element) {
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var options = Object.extend({
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}, arguments[1] || { });
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if(options.containment) {
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options._containers = [];
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var containment = options.containment;
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if(Object.isArray(containment)) {
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containment.each( function(c) { options._containers.push($(c)) });
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options._containers.push($(containment));
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if(options.accept) options.accept = [options.accept].flatten();
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Element.makePositioned(element); // fix IE
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options.element = element;
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this.drops.push(options);
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findDeepestChild: function(drops) {
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for (i = 1; i < drops.length; ++i)
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if (Element.isParent(drops[i].element, deepest.element))
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isContained: function(element, drop) {
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containmentNode = element.treeNode;
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containmentNode = element.parentNode;
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return drop._containers.detect(function(c) { return containmentNode == c });
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isAffected: function(point, element, drop) {
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(drop.element!=element) &&
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((!drop._containers) ||
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this.isContained(element, drop)) &&
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(Element.classNames(element).detect(
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function(v) { return drop.accept.include(v) } ) )) &&
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Position.within(drop.element, point[0], point[1]) );
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deactivate: function(drop) {
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Element.removeClassName(drop.element, drop.hoverclass);
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this.last_active = null;
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activate: function(drop) {
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Element.addClassName(drop.element, drop.hoverclass);
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this.last_active = drop;
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show: function(point, element) {
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if(!this.drops.length) return;
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var drop, affected = [];
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this.drops.each( function(drop) {
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if(Droppables.isAffected(point, element, drop))
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drop = Droppables.findDeepestChild(affected);
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if(this.last_active && this.last_active != drop) this.deactivate(this.last_active);
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Position.within(drop.element, point[0], point[1]);
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drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
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if (drop != this.last_active) Droppables.activate(drop);
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fire: function(event, element) {
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if(!this.last_active) return;
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if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
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if (this.last_active.onDrop) {
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this.last_active.onDrop(element, this.last_active.element, event);
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this.deactivate(this.last_active);
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register: function(draggable) {
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if(this.drags.length == 0) {
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this.eventMouseUp = this.endDrag.bindAsEventListener(this);
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this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
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this.eventKeypress = this.keyPress.bindAsEventListener(this);
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Event.observe(document, "mouseup", this.eventMouseUp);
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Event.observe(document, "mousemove", this.eventMouseMove);
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Event.observe(document, "keypress", this.eventKeypress);
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this.drags.push(draggable);
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unregister: function(draggable) {
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this.drags = this.drags.reject(function(d) { return d==draggable });
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if(this.drags.length == 0) {
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Event.stopObserving(document, "mouseup", this.eventMouseUp);
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Event.stopObserving(document, "mousemove", this.eventMouseMove);
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Event.stopObserving(document, "keypress", this.eventKeypress);
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activate: function(draggable) {
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if(draggable.options.delay) {
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this._timeout = setTimeout(function() {
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Draggables._timeout = null;
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Draggables.activeDraggable = draggable;
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}.bind(this), draggable.options.delay);
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window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
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this.activeDraggable = draggable;
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deactivate: function() {
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this.activeDraggable = null;
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updateDrag: function(event) {
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if(!this.activeDraggable) return;
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var pointer = [Event.pointerX(event), Event.pointerY(event)];
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// Mozilla-based browsers fire successive mousemove events with
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// the same coordinates, prevent needless redrawing (moz bug?)
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if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
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this._lastPointer = pointer;
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this.activeDraggable.updateDrag(event, pointer);
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endDrag: function(event) {
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clearTimeout(this._timeout);
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this._timeout = null;
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if(!this.activeDraggable) return;
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this._lastPointer = null;
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this.activeDraggable.endDrag(event);
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this.activeDraggable = null;
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keyPress: function(event) {
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if(this.activeDraggable)
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this.activeDraggable.keyPress(event);
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addObserver: function(observer) {
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this.observers.push(observer);
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this._cacheObserverCallbacks();
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removeObserver: function(element) { // element instead of observer fixes mem leaks
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this.observers = this.observers.reject( function(o) { return o.element==element });
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this._cacheObserverCallbacks();
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notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag'
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if(this[eventName+'Count'] > 0)
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this.observers.each( function(o) {
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if(o[eventName]) o[eventName](eventName, draggable, event);
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if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
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_cacheObserverCallbacks: function() {
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['onStart','onEnd','onDrag'].each( function(eventName) {
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Draggables[eventName+'Count'] = Draggables.observers.select(
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function(o) { return o[eventName]; }
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/*--------------------------------------------------------------------------*/
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var Draggable = Class.create({
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initialize: function(element) {
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reverteffect: function(element, top_offset, left_offset) {
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var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
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new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
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queue: {scope:'_draggable', position:'end'}
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endeffect: function(element) {
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var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
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new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity,
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queue: {scope:'_draggable', position:'end'},
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afterFinish: function(){
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Draggable._dragging[element] = false
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scrollSensitivity: 20,
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snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] }
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if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))
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Object.extend(defaults, {
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starteffect: function(element) {
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element._opacity = Element.getOpacity(element);
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Draggable._dragging[element] = true;
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new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7});
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var options = Object.extend(defaults, arguments[1] || { });
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this.element = $(element);
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if(options.handle && Object.isString(options.handle))
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this.handle = this.element.down('.'+options.handle, 0);
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if(!this.handle) this.handle = $(options.handle);
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if(!this.handle) this.handle = this.element;
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if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
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options.scroll = $(options.scroll);
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this._isScrollChild = Element.childOf(this.element, options.scroll);
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Element.makePositioned(this.element); // fix IE
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this.options = options;
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this.dragging = false;
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this.eventMouseDown = this.initDrag.bindAsEventListener(this);
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Event.observe(this.handle, "mousedown", this.eventMouseDown);
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Draggables.register(this);
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destroy: function() {
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Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
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Draggables.unregister(this);
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currentDelta: function() {
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parseInt(Element.getStyle(this.element,'left') || '0'),
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parseInt(Element.getStyle(this.element,'top') || '0')]);
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initDrag: function(event) {
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if(!Object.isUndefined(Draggable._dragging[this.element]) &&
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Draggable._dragging[this.element]) return;
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if(Event.isLeftClick(event)) {
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// abort on form elements, fixes a Firefox issue
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var src = Event.element(event);
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if((tag_name = src.tagName.toUpperCase()) && (
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tag_name=='SELECT' ||
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tag_name=='OPTION' ||
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tag_name=='BUTTON' ||
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tag_name=='TEXTAREA')) return;
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var pointer = [Event.pointerX(event), Event.pointerY(event)];
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var pos = Position.cumulativeOffset(this.element);
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this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
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Draggables.activate(this);
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startDrag: function(event) {
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this.dragging = true;
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this.delta = this.currentDelta();
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if(this.options.zindex) {
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this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
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this.element.style.zIndex = this.options.zindex;
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if(this.options.ghosting) {
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this._clone = this.element.cloneNode(true);
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this.element._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
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if (!this.element._originallyAbsolute)
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Position.absolutize(this.element);
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this.element.parentNode.insertBefore(this._clone, this.element);
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if(this.options.scroll) {
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if (this.options.scroll == window) {
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var where = this._getWindowScroll(this.options.scroll);
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this.originalScrollLeft = where.left;
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this.originalScrollTop = where.top;
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this.originalScrollLeft = this.options.scroll.scrollLeft;
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this.originalScrollTop = this.options.scroll.scrollTop;
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Draggables.notify('onStart', this, event);
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if(this.options.starteffect) this.options.starteffect(this.element);
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updateDrag: function(event, pointer) {
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if(!this.dragging) this.startDrag(event);
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if(!this.options.quiet){
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Droppables.show(pointer, this.element);
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Draggables.notify('onDrag', this, event);
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if(this.options.change) this.options.change(this);
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if(this.options.scroll) {
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this.stopScrolling();
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if (this.options.scroll == window) {
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with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
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p = Position.page(this.options.scroll);
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p[0] += this.options.scroll.scrollLeft + Position.deltaX;
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p[1] += this.options.scroll.scrollTop + Position.deltaY;
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p.push(p[0]+this.options.scroll.offsetWidth);
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p.push(p[1]+this.options.scroll.offsetHeight);
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if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
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if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
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if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
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if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
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this.startScrolling(speed);
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// fix AppleWebKit rendering
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if(Prototype.Browser.WebKit) window.scrollBy(0,0);
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finishDrag: function(event, success) {
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this.dragging = false;
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if(this.options.quiet){
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var pointer = [Event.pointerX(event), Event.pointerY(event)];
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Droppables.show(pointer, this.element);
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if(this.options.ghosting) {
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if (!this.element._originallyAbsolute)
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Position.relativize(this.element);
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delete this.element._originallyAbsolute;
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Element.remove(this._clone);
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dropped = Droppables.fire(event, this.element);
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if (!dropped) dropped = false;
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if(dropped && this.options.onDropped) this.options.onDropped(this.element);
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Draggables.notify('onEnd', this, event);
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var revert = this.options.revert;
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if(revert && Object.isFunction(revert)) revert = revert(this.element);
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var d = this.currentDelta();
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if(revert && this.options.reverteffect) {
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if (dropped == 0 || revert != 'failure')
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this.options.reverteffect(this.element,
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d[1]-this.delta[1], d[0]-this.delta[0]);
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if(this.options.zindex)
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this.element.style.zIndex = this.originalZ;
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if(this.options.endeffect)
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this.options.endeffect(this.element);
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Draggables.deactivate(this);
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keyPress: function(event) {
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if(event.keyCode!=Event.KEY_ESC) return;
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this.finishDrag(event, false);
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endDrag: function(event) {
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if(!this.dragging) return;
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this.stopScrolling();
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this.finishDrag(event, true);
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draw: function(point) {
459
var pos = Position.cumulativeOffset(this.element);
460
if(this.options.ghosting) {
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var r = Position.realOffset(this.element);
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pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
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var d = this.currentDelta();
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pos[0] -= d[0]; pos[1] -= d[1];
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if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
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pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
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pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
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var p = [0,1].map(function(i){
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return (point[i]-pos[i]-this.offset[i])
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if(this.options.snap) {
478
if(Object.isFunction(this.options.snap)) {
479
p = this.options.snap(p[0],p[1],this);
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if(Object.isArray(this.options.snap)) {
482
p = p.map( function(v, i) {
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return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this))
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p = p.map( function(v) {
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return (v/this.options.snap).round()*this.options.snap }.bind(this))
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var style = this.element.style;
491
if((!this.options.constraint) || (this.options.constraint=='horizontal'))
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style.left = p[0] + "px";
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if((!this.options.constraint) || (this.options.constraint=='vertical'))
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style.top = p[1] + "px";
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if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
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stopScrolling: function() {
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if(this.scrollInterval) {
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clearInterval(this.scrollInterval);
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this.scrollInterval = null;
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Draggables._lastScrollPointer = null;
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startScrolling: function(speed) {
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if(!(speed[0] || speed[1])) return;
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this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
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this.lastScrolled = new Date();
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this.scrollInterval = setInterval(this.scroll.bind(this), 10);
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var current = new Date();
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var delta = current - this.lastScrolled;
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this.lastScrolled = current;
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if(this.options.scroll == window) {
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with (this._getWindowScroll(this.options.scroll)) {
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if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
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var d = delta / 1000;
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this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
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this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
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this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000;
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Droppables.show(Draggables._lastPointer, this.element);
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Draggables.notify('onDrag', this);
533
if (this._isScrollChild) {
534
Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
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Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
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Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
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if (Draggables._lastScrollPointer[0] < 0)
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Draggables._lastScrollPointer[0] = 0;
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if (Draggables._lastScrollPointer[1] < 0)
540
Draggables._lastScrollPointer[1] = 0;
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this.draw(Draggables._lastScrollPointer);
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if(this.options.change) this.options.change(this);
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_getWindowScroll: function(w) {
550
if (w.document.documentElement && documentElement.scrollTop) {
551
T = documentElement.scrollTop;
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L = documentElement.scrollLeft;
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} else if (w.document.body) {
560
} else if (w.document.documentElement && documentElement.clientWidth) {
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W = documentElement.clientWidth;
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H = documentElement.clientHeight;
564
W = body.offsetWidth;
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H = body.offsetHeight
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return { top: T, left: L, width: W, height: H };
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Draggable._dragging = { };
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/*--------------------------------------------------------------------------*/
576
var SortableObserver = Class.create({
577
initialize: function(element, observer) {
578
this.element = $(element);
579
this.observer = observer;
580
this.lastValue = Sortable.serialize(this.element);
583
onStart: function() {
584
this.lastValue = Sortable.serialize(this.element);
589
if(this.lastValue != Sortable.serialize(this.element))
590
this.observer(this.element)
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SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
599
_findRootElement: function(element) {
600
while (element.tagName.toUpperCase() != "BODY") {
601
if(element.id && Sortable.sortables[element.id]) return element;
602
element = element.parentNode;
606
options: function(element) {
607
element = Sortable._findRootElement($(element));
609
return Sortable.sortables[element.id];
612
destroy: function(element){
613
var s = Sortable.options(element);
616
Draggables.removeObserver(s.element);
617
s.droppables.each(function(d){ Droppables.remove(d) });
618
s.draggables.invoke('destroy');
620
delete Sortable.sortables[s.element.id];
624
create: function(element) {
625
element = $(element);
626
var options = Object.extend({
628
tag: 'li', // assumes li children, override with tag: 'tagname'
632
overlap: 'vertical', // one of 'vertical', 'horizontal'
633
constraint: 'vertical', // one of 'vertical', 'horizontal', false
634
containment: element, // also takes array of elements (or id's); or false
635
handle: false, // or a CSS class
642
scrollSensitivity: 20,
644
format: this.SERIALIZE_RULE,
646
// these take arrays of elements or ids and can be
647
// used for better initialization performance
651
onChange: Prototype.emptyFunction,
652
onUpdate: Prototype.emptyFunction
653
}, arguments[1] || { });
655
// clear any old sortable with same element
656
this.destroy(element);
658
// build options for the draggables
659
var options_for_draggable = {
661
quiet: options.quiet,
662
scroll: options.scroll,
663
scrollSpeed: options.scrollSpeed,
664
scrollSensitivity: options.scrollSensitivity,
665
delay: options.delay,
666
ghosting: options.ghosting,
667
constraint: options.constraint,
668
handle: options.handle };
670
if(options.starteffect)
671
options_for_draggable.starteffect = options.starteffect;
673
if(options.reverteffect)
674
options_for_draggable.reverteffect = options.reverteffect;
676
if(options.ghosting) options_for_draggable.reverteffect = function(element) {
677
element.style.top = 0;
678
element.style.left = 0;
681
if(options.endeffect)
682
options_for_draggable.endeffect = options.endeffect;
685
options_for_draggable.zindex = options.zindex;
687
// build options for the droppables
688
var options_for_droppable = {
689
overlap: options.overlap,
690
containment: options.containment,
692
hoverclass: options.hoverclass,
693
onHover: Sortable.onHover
696
var options_for_tree = {
697
onHover: Sortable.onEmptyHover,
698
overlap: options.overlap,
699
containment: options.containment,
700
hoverclass: options.hoverclass
703
// fix for gecko engine
704
Element.cleanWhitespace(element);
706
options.draggables = [];
707
options.droppables = [];
709
// drop on empty handling
710
if(options.dropOnEmpty || options.tree) {
711
Droppables.add(element, options_for_tree);
712
options.droppables.push(element);
715
(options.elements || this.findElements(element, options) || []).each( function(e,i) {
716
var handle = options.handles ? $(options.handles[i]) :
717
(options.handle ? $(e).select('.' + options.handle)[0] : e);
718
options.draggables.push(
719
new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
720
Droppables.add(e, options_for_droppable);
721
if(options.tree) e.treeNode = element;
722
options.droppables.push(e);
726
(Sortable.findTreeElements(element, options) || []).each( function(e) {
727
Droppables.add(e, options_for_tree);
728
e.treeNode = element;
729
options.droppables.push(e);
734
this.sortables[element.id] = options;
737
Draggables.addObserver(new SortableObserver(element, options.onUpdate));
741
// return all suitable-for-sortable elements in a guaranteed order
742
findElements: function(element, options) {
743
return Element.findChildren(
744
element, options.only, options.tree ? true : false, options.tag);
747
findTreeElements: function(element, options) {
748
return Element.findChildren(
749
element, options.only, options.tree ? true : false, options.treeTag);
752
onHover: function(element, dropon, overlap) {
753
if(Element.isParent(dropon, element)) return;
755
if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
757
} else if(overlap>0.5) {
758
Sortable.mark(dropon, 'before');
759
if(dropon.previousSibling != element) {
760
var oldParentNode = element.parentNode;
761
element.style.visibility = "hidden"; // fix gecko rendering
762
dropon.parentNode.insertBefore(element, dropon);
763
if(dropon.parentNode!=oldParentNode)
764
Sortable.options(oldParentNode).onChange(element);
765
Sortable.options(dropon.parentNode).onChange(element);
768
Sortable.mark(dropon, 'after');
769
var nextElement = dropon.nextSibling || null;
770
if(nextElement != element) {
771
var oldParentNode = element.parentNode;
772
element.style.visibility = "hidden"; // fix gecko rendering
773
dropon.parentNode.insertBefore(element, nextElement);
774
if(dropon.parentNode!=oldParentNode)
775
Sortable.options(oldParentNode).onChange(element);
776
Sortable.options(dropon.parentNode).onChange(element);
781
onEmptyHover: function(element, dropon, overlap) {
782
var oldParentNode = element.parentNode;
783
var droponOptions = Sortable.options(dropon);
785
if(!Element.isParent(dropon, element)) {
788
var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});
792
var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);
794
for (index = 0; index < children.length; index += 1) {
795
if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
796
offset -= Element.offsetSize (children[index], droponOptions.overlap);
797
} else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
798
child = index + 1 < children.length ? children[index + 1] : null;
801
child = children[index];
807
dropon.insertBefore(element, child);
809
Sortable.options(oldParentNode).onChange(element);
810
droponOptions.onChange(element);
815
if(Sortable._marker) Sortable._marker.hide();
818
mark: function(dropon, position) {
819
// mark on ghosting only
820
var sortable = Sortable.options(dropon.parentNode);
821
if(sortable && !sortable.ghosting) return;
823
if(!Sortable._marker) {
825
($('dropmarker') || Element.extend(document.createElement('DIV'))).
826
hide().addClassName('dropmarker').setStyle({position:'absolute'});
827
document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
829
var offsets = Position.cumulativeOffset(dropon);
830
Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
832
if(position=='after')
833
if(sortable.overlap == 'horizontal')
834
Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
836
Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
838
Sortable._marker.show();
841
_tree: function(element, options, parent) {
842
var children = Sortable.findElements(element, options) || [];
844
for (var i = 0; i < children.length; ++i) {
845
var match = children[i].id.match(options.format);
847
if (!match) continue;
850
id: encodeURIComponent(match ? match[1] : null),
854
position: parent.children.length,
855
container: $(children[i]).down(options.treeTag)
858
/* Get the element containing the children and recurse over it */
860
this._tree(child.container, options, child)
862
parent.children.push (child);
868
tree: function(element) {
869
element = $(element);
870
var sortableOptions = this.options(element);
871
var options = Object.extend({
872
tag: sortableOptions.tag,
873
treeTag: sortableOptions.treeTag,
874
only: sortableOptions.only,
876
format: sortableOptions.format
877
}, arguments[1] || { });
887
return Sortable._tree(element, options, root);
890
/* Construct a [i] index for a particular node */
891
_constructIndex: function(node) {
894
if (node.id) index = '[' + node.position + ']' + index;
895
} while ((node = node.parent) != null);
899
sequence: function(element) {
900
element = $(element);
901
var options = Object.extend(this.options(element), arguments[1] || { });
903
return $(this.findElements(element, options) || []).map( function(item) {
904
return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
908
setSequence: function(element, new_sequence) {
909
element = $(element);
910
var options = Object.extend(this.options(element), arguments[2] || { });
913
this.findElements(element, options).each( function(n) {
914
if (n.id.match(options.format))
915
nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
916
n.parentNode.removeChild(n);
919
new_sequence.each(function(ident) {
920
var n = nodeMap[ident];
922
n[1].appendChild(n[0]);
923
delete nodeMap[ident];
928
serialize: function(element) {
929
element = $(element);
930
var options = Object.extend(Sortable.options(element), arguments[1] || { });
931
var name = encodeURIComponent(
932
(arguments[1] && arguments[1].name) ? arguments[1].name : element.id);
935
return Sortable.tree(element, arguments[1]).children.map( function (item) {
936
return [name + Sortable._constructIndex(item) + "[id]=" +
937
encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
938
}).flatten().join('&');
940
return Sortable.sequence(element, arguments[1]).map( function(item) {
941
return name + "[]=" + encodeURIComponent(item);
947
// Returns true if child is contained within element
948
Element.isParent = function(child, element) {
949
if (!child.parentNode || child == element) return false;
950
if (child.parentNode == element) return true;
951
return Element.isParent(child.parentNode, element);
954
Element.findChildren = function(element, only, recursive, tagName) {
955
if(!element.hasChildNodes()) return null;
956
tagName = tagName.toUpperCase();
957
if(only) only = [only].flatten();
959
$A(element.childNodes).each( function(e) {
960
if(e.tagName && e.tagName.toUpperCase()==tagName &&
961
(!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
964
var grandchildren = Element.findChildren(e, only, recursive, tagName);
965
if(grandchildren) elements.push(grandchildren);
969
return (elements.length>0 ? elements.flatten() : []);
972
Element.offsetSize = function (element, type) {
973
return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];