Chris@0: // Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) Chris@0: // (c) 2005-2008 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz) Chris@0: // Chris@0: // script.aculo.us is freely distributable under the terms of an MIT-style license. Chris@0: // For details, see the script.aculo.us web site: http://script.aculo.us/ Chris@0: Chris@0: if(Object.isUndefined(Effect)) Chris@0: throw("dragdrop.js requires including script.aculo.us' effects.js library"); Chris@0: Chris@0: var Droppables = { Chris@0: drops: [], Chris@0: Chris@0: remove: function(element) { Chris@0: this.drops = this.drops.reject(function(d) { return d.element==$(element) }); Chris@0: }, Chris@0: Chris@0: add: function(element) { Chris@0: element = $(element); Chris@0: var options = Object.extend({ Chris@0: greedy: true, Chris@0: hoverclass: null, Chris@0: tree: false Chris@0: }, arguments[1] || { }); Chris@0: Chris@0: // cache containers Chris@0: if(options.containment) { Chris@0: options._containers = []; Chris@0: var containment = options.containment; Chris@0: if(Object.isArray(containment)) { Chris@0: containment.each( function(c) { options._containers.push($(c)) }); Chris@0: } else { Chris@0: options._containers.push($(containment)); Chris@0: } Chris@0: } Chris@0: Chris@0: if(options.accept) options.accept = [options.accept].flatten(); Chris@0: Chris@0: Element.makePositioned(element); // fix IE Chris@0: options.element = element; Chris@0: Chris@0: this.drops.push(options); Chris@0: }, Chris@0: Chris@0: findDeepestChild: function(drops) { Chris@0: deepest = drops[0]; Chris@0: Chris@0: for (i = 1; i < drops.length; ++i) Chris@0: if (Element.isParent(drops[i].element, deepest.element)) Chris@0: deepest = drops[i]; Chris@0: Chris@0: return deepest; Chris@0: }, Chris@0: Chris@0: isContained: function(element, drop) { Chris@0: var containmentNode; Chris@0: if(drop.tree) { Chris@0: containmentNode = element.treeNode; Chris@0: } else { Chris@0: containmentNode = element.parentNode; Chris@0: } Chris@0: return drop._containers.detect(function(c) { return containmentNode == c }); Chris@0: }, Chris@0: Chris@0: isAffected: function(point, element, drop) { Chris@0: return ( Chris@0: (drop.element!=element) && Chris@0: ((!drop._containers) || Chris@0: this.isContained(element, drop)) && Chris@0: ((!drop.accept) || Chris@0: (Element.classNames(element).detect( Chris@0: function(v) { return drop.accept.include(v) } ) )) && Chris@0: Position.within(drop.element, point[0], point[1]) ); Chris@0: }, Chris@0: Chris@0: deactivate: function(drop) { Chris@0: if(drop.hoverclass) Chris@0: Element.removeClassName(drop.element, drop.hoverclass); Chris@0: this.last_active = null; Chris@0: }, Chris@0: Chris@0: activate: function(drop) { Chris@0: if(drop.hoverclass) Chris@0: Element.addClassName(drop.element, drop.hoverclass); Chris@0: this.last_active = drop; Chris@0: }, Chris@0: Chris@0: show: function(point, element) { Chris@0: if(!this.drops.length) return; Chris@0: var drop, affected = []; Chris@0: Chris@0: this.drops.each( function(drop) { Chris@0: if(Droppables.isAffected(point, element, drop)) Chris@0: affected.push(drop); Chris@0: }); Chris@0: Chris@0: if(affected.length>0) Chris@0: drop = Droppables.findDeepestChild(affected); Chris@0: Chris@0: if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); Chris@0: if (drop) { Chris@0: Position.within(drop.element, point[0], point[1]); Chris@0: if(drop.onHover) Chris@0: drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); Chris@0: Chris@0: if (drop != this.last_active) Droppables.activate(drop); Chris@0: } Chris@0: }, Chris@0: Chris@0: fire: function(event, element) { Chris@0: if(!this.last_active) return; Chris@0: Position.prepare(); Chris@0: Chris@0: if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) Chris@0: if (this.last_active.onDrop) { Chris@0: this.last_active.onDrop(element, this.last_active.element, event); Chris@0: return true; Chris@0: } Chris@0: }, Chris@0: Chris@0: reset: function() { Chris@0: if(this.last_active) Chris@0: this.deactivate(this.last_active); Chris@0: } Chris@0: }; Chris@0: Chris@0: var Draggables = { Chris@0: drags: [], Chris@0: observers: [], Chris@0: Chris@0: register: function(draggable) { Chris@0: if(this.drags.length == 0) { Chris@0: this.eventMouseUp = this.endDrag.bindAsEventListener(this); Chris@0: this.eventMouseMove = this.updateDrag.bindAsEventListener(this); Chris@0: this.eventKeypress = this.keyPress.bindAsEventListener(this); Chris@0: Chris@0: Event.observe(document, "mouseup", this.eventMouseUp); Chris@0: Event.observe(document, "mousemove", this.eventMouseMove); Chris@0: Event.observe(document, "keypress", this.eventKeypress); Chris@0: } Chris@0: this.drags.push(draggable); Chris@0: }, Chris@0: Chris@0: unregister: function(draggable) { Chris@0: this.drags = this.drags.reject(function(d) { return d==draggable }); Chris@0: if(this.drags.length == 0) { Chris@0: Event.stopObserving(document, "mouseup", this.eventMouseUp); Chris@0: Event.stopObserving(document, "mousemove", this.eventMouseMove); Chris@0: Event.stopObserving(document, "keypress", this.eventKeypress); Chris@0: } Chris@0: }, Chris@0: Chris@0: activate: function(draggable) { Chris@0: if(draggable.options.delay) { Chris@0: this._timeout = setTimeout(function() { Chris@0: Draggables._timeout = null; Chris@0: window.focus(); Chris@0: Draggables.activeDraggable = draggable; Chris@0: }.bind(this), draggable.options.delay); Chris@0: } else { Chris@0: window.focus(); // allows keypress events if window isn't currently focused, fails for Safari Chris@0: this.activeDraggable = draggable; Chris@0: } Chris@0: }, Chris@0: Chris@0: deactivate: function() { Chris@0: this.activeDraggable = null; Chris@0: }, Chris@0: Chris@0: updateDrag: function(event) { Chris@0: if(!this.activeDraggable) return; Chris@0: var pointer = [Event.pointerX(event), Event.pointerY(event)]; Chris@0: // Mozilla-based browsers fire successive mousemove events with Chris@0: // the same coordinates, prevent needless redrawing (moz bug?) Chris@0: if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; Chris@0: this._lastPointer = pointer; Chris@0: Chris@0: this.activeDraggable.updateDrag(event, pointer); Chris@0: }, Chris@0: Chris@0: endDrag: function(event) { Chris@0: if(this._timeout) { Chris@0: clearTimeout(this._timeout); Chris@0: this._timeout = null; Chris@0: } Chris@0: if(!this.activeDraggable) return; Chris@0: this._lastPointer = null; Chris@0: this.activeDraggable.endDrag(event); Chris@0: this.activeDraggable = null; Chris@0: }, Chris@0: Chris@0: keyPress: function(event) { Chris@0: if(this.activeDraggable) Chris@0: this.activeDraggable.keyPress(event); Chris@0: }, Chris@0: Chris@0: addObserver: function(observer) { Chris@0: this.observers.push(observer); Chris@0: this._cacheObserverCallbacks(); Chris@0: }, Chris@0: Chris@0: removeObserver: function(element) { // element instead of observer fixes mem leaks Chris@0: this.observers = this.observers.reject( function(o) { return o.element==element }); Chris@0: this._cacheObserverCallbacks(); Chris@0: }, Chris@0: Chris@0: notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' Chris@0: if(this[eventName+'Count'] > 0) Chris@0: this.observers.each( function(o) { Chris@0: if(o[eventName]) o[eventName](eventName, draggable, event); Chris@0: }); Chris@0: if(draggable.options[eventName]) draggable.options[eventName](draggable, event); Chris@0: }, Chris@0: Chris@0: _cacheObserverCallbacks: function() { Chris@0: ['onStart','onEnd','onDrag'].each( function(eventName) { Chris@0: Draggables[eventName+'Count'] = Draggables.observers.select( Chris@0: function(o) { return o[eventName]; } Chris@0: ).length; Chris@0: }); Chris@0: } Chris@0: }; Chris@0: Chris@0: /*--------------------------------------------------------------------------*/ Chris@0: Chris@0: var Draggable = Class.create({ Chris@0: initialize: function(element) { Chris@0: var defaults = { Chris@0: handle: false, Chris@0: reverteffect: function(element, top_offset, left_offset) { Chris@0: var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; Chris@0: new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, Chris@0: queue: {scope:'_draggable', position:'end'} Chris@0: }); Chris@0: }, Chris@0: endeffect: function(element) { Chris@0: var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; Chris@0: new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, Chris@0: queue: {scope:'_draggable', position:'end'}, Chris@0: afterFinish: function(){ Chris@0: Draggable._dragging[element] = false Chris@0: } Chris@0: }); Chris@0: }, Chris@0: zindex: 1000, Chris@0: revert: false, Chris@0: quiet: false, Chris@0: scroll: false, Chris@0: scrollSensitivity: 20, Chris@0: scrollSpeed: 15, Chris@0: snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } Chris@0: delay: 0 Chris@0: }; Chris@0: Chris@0: if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) Chris@0: Object.extend(defaults, { Chris@0: starteffect: function(element) { Chris@0: element._opacity = Element.getOpacity(element); Chris@0: Draggable._dragging[element] = true; Chris@0: new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); Chris@0: } Chris@0: }); Chris@0: Chris@0: var options = Object.extend(defaults, arguments[1] || { }); Chris@0: Chris@0: this.element = $(element); Chris@0: Chris@0: if(options.handle && Object.isString(options.handle)) Chris@0: this.handle = this.element.down('.'+options.handle, 0); Chris@0: Chris@0: if(!this.handle) this.handle = $(options.handle); Chris@0: if(!this.handle) this.handle = this.element; Chris@0: Chris@0: if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { Chris@0: options.scroll = $(options.scroll); Chris@0: this._isScrollChild = Element.childOf(this.element, options.scroll); Chris@0: } Chris@0: Chris@0: Element.makePositioned(this.element); // fix IE Chris@0: Chris@0: this.options = options; Chris@0: this.dragging = false; Chris@0: Chris@0: this.eventMouseDown = this.initDrag.bindAsEventListener(this); Chris@0: Event.observe(this.handle, "mousedown", this.eventMouseDown); Chris@0: Chris@0: Draggables.register(this); Chris@0: }, Chris@0: Chris@0: destroy: function() { Chris@0: Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); Chris@0: Draggables.unregister(this); Chris@0: }, Chris@0: Chris@0: currentDelta: function() { Chris@0: return([ Chris@0: parseInt(Element.getStyle(this.element,'left') || '0'), Chris@0: parseInt(Element.getStyle(this.element,'top') || '0')]); Chris@0: }, Chris@0: Chris@0: initDrag: function(event) { Chris@0: if(!Object.isUndefined(Draggable._dragging[this.element]) && Chris@0: Draggable._dragging[this.element]) return; Chris@0: if(Event.isLeftClick(event)) { Chris@0: // abort on form elements, fixes a Firefox issue Chris@0: var src = Event.element(event); Chris@0: if((tag_name = src.tagName.toUpperCase()) && ( Chris@0: tag_name=='INPUT' || Chris@0: tag_name=='SELECT' || Chris@0: tag_name=='OPTION' || Chris@0: tag_name=='BUTTON' || Chris@0: tag_name=='TEXTAREA')) return; Chris@0: Chris@0: var pointer = [Event.pointerX(event), Event.pointerY(event)]; Chris@0: var pos = Position.cumulativeOffset(this.element); Chris@0: this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); Chris@0: Chris@0: Draggables.activate(this); Chris@0: Event.stop(event); Chris@0: } Chris@0: }, Chris@0: Chris@0: startDrag: function(event) { Chris@0: this.dragging = true; Chris@0: if(!this.delta) Chris@0: this.delta = this.currentDelta(); Chris@0: Chris@0: if(this.options.zindex) { Chris@0: this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); Chris@0: this.element.style.zIndex = this.options.zindex; Chris@0: } Chris@0: Chris@0: if(this.options.ghosting) { Chris@0: this._clone = this.element.cloneNode(true); Chris@0: this._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); Chris@0: if (!this._originallyAbsolute) Chris@0: Position.absolutize(this.element); Chris@0: this.element.parentNode.insertBefore(this._clone, this.element); Chris@0: } Chris@0: Chris@0: if(this.options.scroll) { Chris@0: if (this.options.scroll == window) { Chris@0: var where = this._getWindowScroll(this.options.scroll); Chris@0: this.originalScrollLeft = where.left; Chris@0: this.originalScrollTop = where.top; Chris@0: } else { Chris@0: this.originalScrollLeft = this.options.scroll.scrollLeft; Chris@0: this.originalScrollTop = this.options.scroll.scrollTop; Chris@0: } Chris@0: } Chris@0: Chris@0: Draggables.notify('onStart', this, event); Chris@0: Chris@0: if(this.options.starteffect) this.options.starteffect(this.element); Chris@0: }, Chris@0: Chris@0: updateDrag: function(event, pointer) { Chris@0: if(!this.dragging) this.startDrag(event); Chris@0: Chris@0: if(!this.options.quiet){ Chris@0: Position.prepare(); Chris@0: Droppables.show(pointer, this.element); Chris@0: } Chris@0: Chris@0: Draggables.notify('onDrag', this, event); Chris@0: Chris@0: this.draw(pointer); Chris@0: if(this.options.change) this.options.change(this); Chris@0: Chris@0: if(this.options.scroll) { Chris@0: this.stopScrolling(); Chris@0: Chris@0: var p; Chris@0: if (this.options.scroll == window) { Chris@0: with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } Chris@0: } else { Chris@0: p = Position.page(this.options.scroll); Chris@0: p[0] += this.options.scroll.scrollLeft + Position.deltaX; Chris@0: p[1] += this.options.scroll.scrollTop + Position.deltaY; Chris@0: p.push(p[0]+this.options.scroll.offsetWidth); Chris@0: p.push(p[1]+this.options.scroll.offsetHeight); Chris@0: } Chris@0: var speed = [0,0]; Chris@0: if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); Chris@0: if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); Chris@0: if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); Chris@0: if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); Chris@0: this.startScrolling(speed); Chris@0: } Chris@0: Chris@0: // fix AppleWebKit rendering Chris@0: if(Prototype.Browser.WebKit) window.scrollBy(0,0); Chris@0: Chris@0: Event.stop(event); Chris@0: }, Chris@0: Chris@0: finishDrag: function(event, success) { Chris@0: this.dragging = false; Chris@0: Chris@0: if(this.options.quiet){ Chris@0: Position.prepare(); Chris@0: var pointer = [Event.pointerX(event), Event.pointerY(event)]; Chris@0: Droppables.show(pointer, this.element); Chris@0: } Chris@0: Chris@0: if(this.options.ghosting) { Chris@0: if (!this._originallyAbsolute) Chris@0: Position.relativize(this.element); Chris@0: delete this._originallyAbsolute; Chris@0: Element.remove(this._clone); Chris@0: this._clone = null; Chris@0: } Chris@0: Chris@0: var dropped = false; Chris@0: if(success) { Chris@0: dropped = Droppables.fire(event, this.element); Chris@0: if (!dropped) dropped = false; Chris@0: } Chris@0: if(dropped && this.options.onDropped) this.options.onDropped(this.element); Chris@0: Draggables.notify('onEnd', this, event); Chris@0: Chris@0: var revert = this.options.revert; Chris@0: if(revert && Object.isFunction(revert)) revert = revert(this.element); Chris@0: Chris@0: var d = this.currentDelta(); Chris@0: if(revert && this.options.reverteffect) { Chris@0: if (dropped == 0 || revert != 'failure') Chris@0: this.options.reverteffect(this.element, Chris@0: d[1]-this.delta[1], d[0]-this.delta[0]); Chris@0: } else { Chris@0: this.delta = d; Chris@0: } Chris@0: Chris@0: if(this.options.zindex) Chris@0: this.element.style.zIndex = this.originalZ; Chris@0: Chris@0: if(this.options.endeffect) Chris@0: this.options.endeffect(this.element); Chris@0: Chris@0: Draggables.deactivate(this); Chris@0: Droppables.reset(); Chris@0: }, Chris@0: Chris@0: keyPress: function(event) { Chris@0: if(event.keyCode!=Event.KEY_ESC) return; Chris@0: this.finishDrag(event, false); Chris@0: Event.stop(event); Chris@0: }, Chris@0: Chris@0: endDrag: function(event) { Chris@0: if(!this.dragging) return; Chris@0: this.stopScrolling(); Chris@0: this.finishDrag(event, true); Chris@0: Event.stop(event); Chris@0: }, Chris@0: Chris@0: draw: function(point) { Chris@0: var pos = Position.cumulativeOffset(this.element); Chris@0: if(this.options.ghosting) { Chris@0: var r = Position.realOffset(this.element); Chris@0: pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; Chris@0: } Chris@0: Chris@0: var d = this.currentDelta(); Chris@0: pos[0] -= d[0]; pos[1] -= d[1]; Chris@0: Chris@0: if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { Chris@0: pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; Chris@0: pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; Chris@0: } Chris@0: Chris@0: var p = [0,1].map(function(i){ Chris@0: return (point[i]-pos[i]-this.offset[i]) Chris@0: }.bind(this)); Chris@0: Chris@0: if(this.options.snap) { Chris@0: if(Object.isFunction(this.options.snap)) { Chris@0: p = this.options.snap(p[0],p[1],this); Chris@0: } else { Chris@0: if(Object.isArray(this.options.snap)) { Chris@0: p = p.map( function(v, i) { Chris@0: return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)); Chris@0: } else { Chris@0: p = p.map( function(v) { Chris@0: return (v/this.options.snap).round()*this.options.snap }.bind(this)); Chris@0: } Chris@0: }} Chris@0: Chris@0: var style = this.element.style; Chris@0: if((!this.options.constraint) || (this.options.constraint=='horizontal')) Chris@0: style.left = p[0] + "px"; Chris@0: if((!this.options.constraint) || (this.options.constraint=='vertical')) Chris@0: style.top = p[1] + "px"; Chris@0: Chris@0: if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering Chris@0: }, Chris@0: Chris@0: stopScrolling: function() { Chris@0: if(this.scrollInterval) { Chris@0: clearInterval(this.scrollInterval); Chris@0: this.scrollInterval = null; Chris@0: Draggables._lastScrollPointer = null; Chris@0: } Chris@0: }, Chris@0: Chris@0: startScrolling: function(speed) { Chris@0: if(!(speed[0] || speed[1])) return; Chris@0: this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed]; Chris@0: this.lastScrolled = new Date(); Chris@0: this.scrollInterval = setInterval(this.scroll.bind(this), 10); Chris@0: }, Chris@0: Chris@0: scroll: function() { Chris@0: var current = new Date(); Chris@0: var delta = current - this.lastScrolled; Chris@0: this.lastScrolled = current; Chris@0: if(this.options.scroll == window) { Chris@0: with (this._getWindowScroll(this.options.scroll)) { Chris@0: if (this.scrollSpeed[0] || this.scrollSpeed[1]) { Chris@0: var d = delta / 1000; Chris@0: this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] ); Chris@0: } Chris@0: } Chris@0: } else { Chris@0: this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000; Chris@0: this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000; Chris@0: } Chris@0: Chris@0: Position.prepare(); Chris@0: Droppables.show(Draggables._lastPointer, this.element); Chris@0: Draggables.notify('onDrag', this); Chris@0: if (this._isScrollChild) { Chris@0: Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer); Chris@0: Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000; Chris@0: Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000; Chris@0: if (Draggables._lastScrollPointer[0] < 0) Chris@0: Draggables._lastScrollPointer[0] = 0; Chris@0: if (Draggables._lastScrollPointer[1] < 0) Chris@0: Draggables._lastScrollPointer[1] = 0; Chris@0: this.draw(Draggables._lastScrollPointer); Chris@0: } Chris@0: Chris@0: if(this.options.change) this.options.change(this); Chris@0: }, Chris@0: Chris@0: _getWindowScroll: function(w) { Chris@0: var T, L, W, H; Chris@0: with (w.document) { Chris@0: if (w.document.documentElement && documentElement.scrollTop) { Chris@0: T = documentElement.scrollTop; Chris@0: L = documentElement.scrollLeft; Chris@0: } else if (w.document.body) { Chris@0: T = body.scrollTop; Chris@0: L = body.scrollLeft; Chris@0: } Chris@0: if (w.innerWidth) { Chris@0: W = w.innerWidth; Chris@0: H = w.innerHeight; Chris@0: } else if (w.document.documentElement && documentElement.clientWidth) { Chris@0: W = documentElement.clientWidth; Chris@0: H = documentElement.clientHeight; Chris@0: } else { Chris@0: W = body.offsetWidth; Chris@0: H = body.offsetHeight; Chris@0: } Chris@0: } Chris@0: return { top: T, left: L, width: W, height: H }; Chris@0: } Chris@0: }); Chris@0: Chris@0: Draggable._dragging = { }; Chris@0: Chris@0: /*--------------------------------------------------------------------------*/ Chris@0: Chris@0: var SortableObserver = Class.create({ Chris@0: initialize: function(element, observer) { Chris@0: this.element = $(element); Chris@0: this.observer = observer; Chris@0: this.lastValue = Sortable.serialize(this.element); Chris@0: }, Chris@0: Chris@0: onStart: function() { Chris@0: this.lastValue = Sortable.serialize(this.element); Chris@0: }, Chris@0: Chris@0: onEnd: function() { Chris@0: Sortable.unmark(); Chris@0: if(this.lastValue != Sortable.serialize(this.element)) Chris@0: this.observer(this.element) Chris@0: } Chris@0: }); Chris@0: Chris@0: var Sortable = { Chris@0: SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, Chris@0: Chris@0: sortables: { }, Chris@0: Chris@0: _findRootElement: function(element) { Chris@0: while (element.tagName.toUpperCase() != "BODY") { Chris@0: if(element.id && Sortable.sortables[element.id]) return element; Chris@0: element = element.parentNode; Chris@0: } Chris@0: }, Chris@0: Chris@0: options: function(element) { Chris@0: element = Sortable._findRootElement($(element)); Chris@0: if(!element) return; Chris@0: return Sortable.sortables[element.id]; Chris@0: }, Chris@0: Chris@0: destroy: function(element){ Chris@0: element = $(element); Chris@0: var s = Sortable.sortables[element.id]; Chris@0: Chris@0: if(s) { Chris@0: Draggables.removeObserver(s.element); Chris@0: s.droppables.each(function(d){ Droppables.remove(d) }); Chris@0: s.draggables.invoke('destroy'); Chris@0: Chris@0: delete Sortable.sortables[s.element.id]; Chris@0: } Chris@0: }, Chris@0: Chris@0: create: function(element) { Chris@0: element = $(element); Chris@0: var options = Object.extend({ Chris@0: element: element, Chris@0: tag: 'li', // assumes li children, override with tag: 'tagname' Chris@0: dropOnEmpty: false, Chris@0: tree: false, Chris@0: treeTag: 'ul', Chris@0: overlap: 'vertical', // one of 'vertical', 'horizontal' Chris@0: constraint: 'vertical', // one of 'vertical', 'horizontal', false Chris@0: containment: element, // also takes array of elements (or id's); or false Chris@0: handle: false, // or a CSS class Chris@0: only: false, Chris@0: delay: 0, Chris@0: hoverclass: null, Chris@0: ghosting: false, Chris@0: quiet: false, Chris@0: scroll: false, Chris@0: scrollSensitivity: 20, Chris@0: scrollSpeed: 15, Chris@0: format: this.SERIALIZE_RULE, Chris@0: Chris@0: // these take arrays of elements or ids and can be Chris@0: // used for better initialization performance Chris@0: elements: false, Chris@0: handles: false, Chris@0: Chris@0: onChange: Prototype.emptyFunction, Chris@0: onUpdate: Prototype.emptyFunction Chris@0: }, arguments[1] || { }); Chris@0: Chris@0: // clear any old sortable with same element Chris@0: this.destroy(element); Chris@0: Chris@0: // build options for the draggables Chris@0: var options_for_draggable = { Chris@0: revert: true, Chris@0: quiet: options.quiet, Chris@0: scroll: options.scroll, Chris@0: scrollSpeed: options.scrollSpeed, Chris@0: scrollSensitivity: options.scrollSensitivity, Chris@0: delay: options.delay, Chris@0: ghosting: options.ghosting, Chris@0: constraint: options.constraint, Chris@0: handle: options.handle }; Chris@0: Chris@0: if(options.starteffect) Chris@0: options_for_draggable.starteffect = options.starteffect; Chris@0: Chris@0: if(options.reverteffect) Chris@0: options_for_draggable.reverteffect = options.reverteffect; Chris@0: else Chris@0: if(options.ghosting) options_for_draggable.reverteffect = function(element) { Chris@0: element.style.top = 0; Chris@0: element.style.left = 0; Chris@0: }; Chris@0: Chris@0: if(options.endeffect) Chris@0: options_for_draggable.endeffect = options.endeffect; Chris@0: Chris@0: if(options.zindex) Chris@0: options_for_draggable.zindex = options.zindex; Chris@0: Chris@0: // build options for the droppables Chris@0: var options_for_droppable = { Chris@0: overlap: options.overlap, Chris@0: containment: options.containment, Chris@0: tree: options.tree, Chris@0: hoverclass: options.hoverclass, Chris@0: onHover: Sortable.onHover Chris@0: }; Chris@0: Chris@0: var options_for_tree = { Chris@0: onHover: Sortable.onEmptyHover, Chris@0: overlap: options.overlap, Chris@0: containment: options.containment, Chris@0: hoverclass: options.hoverclass Chris@0: }; Chris@0: Chris@0: // fix for gecko engine Chris@0: Element.cleanWhitespace(element); Chris@0: Chris@0: options.draggables = []; Chris@0: options.droppables = []; Chris@0: Chris@0: // drop on empty handling Chris@0: if(options.dropOnEmpty || options.tree) { Chris@0: Droppables.add(element, options_for_tree); Chris@0: options.droppables.push(element); Chris@0: } Chris@0: Chris@0: (options.elements || this.findElements(element, options) || []).each( function(e,i) { Chris@0: var handle = options.handles ? $(options.handles[i]) : Chris@0: (options.handle ? $(e).select('.' + options.handle)[0] : e); Chris@0: options.draggables.push( Chris@0: new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); Chris@0: Droppables.add(e, options_for_droppable); Chris@0: if(options.tree) e.treeNode = element; Chris@0: options.droppables.push(e); Chris@0: }); Chris@0: Chris@0: if(options.tree) { Chris@0: (Sortable.findTreeElements(element, options) || []).each( function(e) { Chris@0: Droppables.add(e, options_for_tree); Chris@0: e.treeNode = element; Chris@0: options.droppables.push(e); Chris@0: }); Chris@0: } Chris@0: Chris@0: // keep reference Chris@0: this.sortables[element.id] = options; Chris@0: Chris@0: // for onupdate Chris@0: Draggables.addObserver(new SortableObserver(element, options.onUpdate)); Chris@0: Chris@0: }, Chris@0: Chris@0: // return all suitable-for-sortable elements in a guaranteed order Chris@0: findElements: function(element, options) { Chris@0: return Element.findChildren( Chris@0: element, options.only, options.tree ? true : false, options.tag); Chris@0: }, Chris@0: Chris@0: findTreeElements: function(element, options) { Chris@0: return Element.findChildren( Chris@0: element, options.only, options.tree ? true : false, options.treeTag); Chris@0: }, Chris@0: Chris@0: onHover: function(element, dropon, overlap) { Chris@0: if(Element.isParent(dropon, element)) return; Chris@0: Chris@0: if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { Chris@0: return; Chris@0: } else if(overlap>0.5) { Chris@0: Sortable.mark(dropon, 'before'); Chris@0: if(dropon.previousSibling != element) { Chris@0: var oldParentNode = element.parentNode; Chris@0: element.style.visibility = "hidden"; // fix gecko rendering Chris@0: dropon.parentNode.insertBefore(element, dropon); Chris@0: if(dropon.parentNode!=oldParentNode) Chris@0: Sortable.options(oldParentNode).onChange(element); Chris@0: Sortable.options(dropon.parentNode).onChange(element); Chris@0: } Chris@0: } else { Chris@0: Sortable.mark(dropon, 'after'); Chris@0: var nextElement = dropon.nextSibling || null; Chris@0: if(nextElement != element) { Chris@0: var oldParentNode = element.parentNode; Chris@0: element.style.visibility = "hidden"; // fix gecko rendering Chris@0: dropon.parentNode.insertBefore(element, nextElement); Chris@0: if(dropon.parentNode!=oldParentNode) Chris@0: Sortable.options(oldParentNode).onChange(element); Chris@0: Sortable.options(dropon.parentNode).onChange(element); Chris@0: } Chris@0: } Chris@0: }, Chris@0: Chris@0: onEmptyHover: function(element, dropon, overlap) { Chris@0: var oldParentNode = element.parentNode; Chris@0: var droponOptions = Sortable.options(dropon); Chris@0: Chris@0: if(!Element.isParent(dropon, element)) { Chris@0: var index; Chris@0: Chris@0: var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); Chris@0: var child = null; Chris@0: Chris@0: if(children) { Chris@0: var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); Chris@0: Chris@0: for (index = 0; index < children.length; index += 1) { Chris@0: if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { Chris@0: offset -= Element.offsetSize (children[index], droponOptions.overlap); Chris@0: } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { Chris@0: child = index + 1 < children.length ? children[index + 1] : null; Chris@0: break; Chris@0: } else { Chris@0: child = children[index]; Chris@0: break; Chris@0: } Chris@0: } Chris@0: } Chris@0: Chris@0: dropon.insertBefore(element, child); Chris@0: Chris@0: Sortable.options(oldParentNode).onChange(element); Chris@0: droponOptions.onChange(element); Chris@0: } Chris@0: }, Chris@0: Chris@0: unmark: function() { Chris@0: if(Sortable._marker) Sortable._marker.hide(); Chris@0: }, Chris@0: Chris@0: mark: function(dropon, position) { Chris@0: // mark on ghosting only Chris@0: var sortable = Sortable.options(dropon.parentNode); Chris@0: if(sortable && !sortable.ghosting) return; Chris@0: Chris@0: if(!Sortable._marker) { Chris@0: Sortable._marker = Chris@0: ($('dropmarker') || Element.extend(document.createElement('DIV'))). Chris@0: hide().addClassName('dropmarker').setStyle({position:'absolute'}); Chris@0: document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); Chris@0: } Chris@0: var offsets = Position.cumulativeOffset(dropon); Chris@0: Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); Chris@0: Chris@0: if(position=='after') Chris@0: if(sortable.overlap == 'horizontal') Chris@0: Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); Chris@0: else Chris@0: Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); Chris@0: Chris@0: Sortable._marker.show(); Chris@0: }, Chris@0: Chris@0: _tree: function(element, options, parent) { Chris@0: var children = Sortable.findElements(element, options) || []; Chris@0: Chris@0: for (var i = 0; i < children.length; ++i) { Chris@0: var match = children[i].id.match(options.format); Chris@0: Chris@0: if (!match) continue; Chris@0: Chris@0: var child = { Chris@0: id: encodeURIComponent(match ? match[1] : null), Chris@0: element: element, Chris@0: parent: parent, Chris@0: children: [], Chris@0: position: parent.children.length, Chris@0: container: $(children[i]).down(options.treeTag) Chris@0: }; Chris@0: Chris@0: /* Get the element containing the children and recurse over it */ Chris@0: if (child.container) Chris@0: this._tree(child.container, options, child); Chris@0: Chris@0: parent.children.push (child); Chris@0: } Chris@0: Chris@0: return parent; Chris@0: }, Chris@0: Chris@0: tree: function(element) { Chris@0: element = $(element); Chris@0: var sortableOptions = this.options(element); Chris@0: var options = Object.extend({ Chris@0: tag: sortableOptions.tag, Chris@0: treeTag: sortableOptions.treeTag, Chris@0: only: sortableOptions.only, Chris@0: name: element.id, Chris@0: format: sortableOptions.format Chris@0: }, arguments[1] || { }); Chris@0: Chris@0: var root = { Chris@0: id: null, Chris@0: parent: null, Chris@0: children: [], Chris@0: container: element, Chris@0: position: 0 Chris@0: }; Chris@0: Chris@0: return Sortable._tree(element, options, root); Chris@0: }, Chris@0: Chris@0: /* Construct a [i] index for a particular node */ Chris@0: _constructIndex: function(node) { Chris@0: var index = ''; Chris@0: do { Chris@0: if (node.id) index = '[' + node.position + ']' + index; Chris@0: } while ((node = node.parent) != null); Chris@0: return index; Chris@0: }, Chris@0: Chris@0: sequence: function(element) { Chris@0: element = $(element); Chris@0: var options = Object.extend(this.options(element), arguments[1] || { }); Chris@0: Chris@0: return $(this.findElements(element, options) || []).map( function(item) { Chris@0: return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; Chris@0: }); Chris@0: }, Chris@0: Chris@0: setSequence: function(element, new_sequence) { Chris@0: element = $(element); Chris@0: var options = Object.extend(this.options(element), arguments[2] || { }); Chris@0: Chris@0: var nodeMap = { }; Chris@0: this.findElements(element, options).each( function(n) { Chris@0: if (n.id.match(options.format)) Chris@0: nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode]; Chris@0: n.parentNode.removeChild(n); Chris@0: }); Chris@0: Chris@0: new_sequence.each(function(ident) { Chris@0: var n = nodeMap[ident]; Chris@0: if (n) { Chris@0: n[1].appendChild(n[0]); Chris@0: delete nodeMap[ident]; Chris@0: } Chris@0: }); Chris@0: }, Chris@0: Chris@0: serialize: function(element) { Chris@0: element = $(element); Chris@0: var options = Object.extend(Sortable.options(element), arguments[1] || { }); Chris@0: var name = encodeURIComponent( Chris@0: (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); Chris@0: Chris@0: if (options.tree) { Chris@0: return Sortable.tree(element, arguments[1]).children.map( function (item) { Chris@0: return [name + Sortable._constructIndex(item) + "[id]=" + Chris@0: encodeURIComponent(item.id)].concat(item.children.map(arguments.callee)); Chris@0: }).flatten().join('&'); Chris@0: } else { Chris@0: return Sortable.sequence(element, arguments[1]).map( function(item) { Chris@0: return name + "[]=" + encodeURIComponent(item); Chris@0: }).join('&'); Chris@0: } Chris@0: } Chris@0: }; Chris@0: Chris@0: // Returns true if child is contained within element Chris@0: Element.isParent = function(child, element) { Chris@0: if (!child.parentNode || child == element) return false; Chris@0: if (child.parentNode == element) return true; Chris@0: return Element.isParent(child.parentNode, element); Chris@0: }; Chris@0: Chris@0: Element.findChildren = function(element, only, recursive, tagName) { Chris@0: if(!element.hasChildNodes()) return null; Chris@0: tagName = tagName.toUpperCase(); Chris@0: if(only) only = [only].flatten(); Chris@0: var elements = []; Chris@0: $A(element.childNodes).each( function(e) { Chris@0: if(e.tagName && e.tagName.toUpperCase()==tagName && Chris@0: (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) Chris@0: elements.push(e); Chris@0: if(recursive) { Chris@0: var grandchildren = Element.findChildren(e, only, recursive, tagName); Chris@0: if(grandchildren) elements.push(grandchildren); Chris@0: } Chris@0: }); Chris@0: Chris@0: return (elements.length>0 ? elements.flatten() : []); Chris@0: }; Chris@0: Chris@0: Element.offsetSize = function (element, type) { Chris@0: return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; Chris@0: };