| // script.aculo.us dragdrop.js v1.8.0, Tue Nov 06 15:01:40 +0300 2007 |
| |
| // Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) |
| // (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz) |
| // |
| // script.aculo.us is freely distributable under the terms of an MIT-style license. |
| // For details, see the script.aculo.us web site: http://script.aculo.us/ |
| |
| if(Object.isUndefined(Effect)) |
| throw("dragdrop.js requires including script.aculo.us' effects.js library"); |
| |
| var Droppables = { |
| drops: [], |
| |
| remove: function(element) { |
| this.drops = this.drops.reject(function(d) { return d.element==$(element) }); |
| }, |
| |
| add: function(element) { |
| element = $(element); |
| var options = Object.extend({ |
| greedy: true, |
| hoverclass: null, |
| tree: false |
| }, arguments[1] || { }); |
| |
| // cache containers |
| if(options.containment) { |
| options._containers = []; |
| var containment = options.containment; |
| if(Object.isArray(containment)) { |
| containment.each( function(c) { options._containers.push($(c)) }); |
| } else { |
| options._containers.push($(containment)); |
| } |
| } |
| |
| if(options.accept) options.accept = [options.accept].flatten(); |
| |
| Element.makePositioned(element); // fix IE |
| options.element = element; |
| |
| this.drops.push(options); |
| }, |
| |
| findDeepestChild: function(drops) { |
| deepest = drops[0]; |
| |
| for (i = 1; i < drops.length; ++i) |
| if (Element.isParent(drops[i].element, deepest.element)) |
| deepest = drops[i]; |
| |
| return deepest; |
| }, |
| |
| isContained: function(element, drop) { |
| var containmentNode; |
| if(drop.tree) { |
| containmentNode = element.treeNode; |
| } else { |
| containmentNode = element.parentNode; |
| } |
| return drop._containers.detect(function(c) { return containmentNode == c }); |
| }, |
| |
| isAffected: function(point, element, drop) { |
| return ( |
| (drop.element!=element) && |
| ((!drop._containers) || |
| this.isContained(element, drop)) && |
| ((!drop.accept) || |
| (Element.classNames(element).detect( |
| function(v) { return drop.accept.include(v) } ) )) && |
| Position.within(drop.element, point[0], point[1]) ); |
| }, |
| |
| deactivate: function(drop) { |
| if(drop.hoverclass) |
| Element.removeClassName(drop.element, drop.hoverclass); |
| this.last_active = null; |
| }, |
| |
| activate: function(drop) { |
| if(drop.hoverclass) |
| Element.addClassName(drop.element, drop.hoverclass); |
| this.last_active = drop; |
| }, |
| |
| show: function(point, element) { |
| if(!this.drops.length) return; |
| var drop, affected = []; |
| |
| this.drops.each( function(drop) { |
| if(Droppables.isAffected(point, element, drop)) |
| affected.push(drop); |
| }); |
| |
| if(affected.length>0) |
| drop = Droppables.findDeepestChild(affected); |
| |
| if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); |
| if (drop) { |
| Position.within(drop.element, point[0], point[1]); |
| if(drop.onHover) |
| drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); |
| |
| if (drop != this.last_active) Droppables.activate(drop); |
| } |
| }, |
| |
| fire: function(event, element) { |
| if(!this.last_active) return; |
| Position.prepare(); |
| |
| if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) |
| if (this.last_active.onDrop) { |
| this.last_active.onDrop(element, this.last_active.element, event); |
| return true; |
| } |
| }, |
| |
| reset: function() { |
| if(this.last_active) |
| this.deactivate(this.last_active); |
| } |
| } |
| |
| var Draggables = { |
| drags: [], |
| observers: [], |
| |
| register: function(draggable) { |
| if(this.drags.length == 0) { |
| this.eventMouseUp = this.endDrag.bindAsEventListener(this); |
| this.eventMouseMove = this.updateDrag.bindAsEventListener(this); |
| this.eventKeypress = this.keyPress.bindAsEventListener(this); |
| |
| Event.observe(document, "mouseup", this.eventMouseUp); |
| Event.observe(document, "mousemove", this.eventMouseMove); |
| Event.observe(document, "keypress", this.eventKeypress); |
| } |
| this.drags.push(draggable); |
| }, |
| |
| unregister: function(draggable) { |
| this.drags = this.drags.reject(function(d) { return d==draggable }); |
| if(this.drags.length == 0) { |
| Event.stopObserving(document, "mouseup", this.eventMouseUp); |
| Event.stopObserving(document, "mousemove", this.eventMouseMove); |
| Event.stopObserving(document, "keypress", this.eventKeypress); |
| } |
| }, |
| |
| activate: function(draggable) { |
| if(draggable.options.delay) { |
| this._timeout = setTimeout(function() { |
| Draggables._timeout = null; |
| window.focus(); |
| Draggables.activeDraggable = draggable; |
| }.bind(this), draggable.options.delay); |
| } else { |
| window.focus(); // allows keypress events if window isn't currently focused, fails for Safari |
| this.activeDraggable = draggable; |
| } |
| }, |
| |
| deactivate: function() { |
| this.activeDraggable = null; |
| }, |
| |
| updateDrag: function(event) { |
| if(!this.activeDraggable) return; |
| var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
| // Mozilla-based browsers fire successive mousemove events with |
| // the same coordinates, prevent needless redrawing (moz bug?) |
| if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; |
| this._lastPointer = pointer; |
| |
| this.activeDraggable.updateDrag(event, pointer); |
| }, |
| |
| endDrag: function(event) { |
| if(this._timeout) { |
| clearTimeout(this._timeout); |
| this._timeout = null; |
| } |
| if(!this.activeDraggable) return; |
| this._lastPointer = null; |
| this.activeDraggable.endDrag(event); |
| this.activeDraggable = null; |
| }, |
| |
| keyPress: function(event) { |
| if(this.activeDraggable) |
| this.activeDraggable.keyPress(event); |
| }, |
| |
| addObserver: function(observer) { |
| this.observers.push(observer); |
| this._cacheObserverCallbacks(); |
| }, |
| |
| removeObserver: function(element) { // element instead of observer fixes mem leaks |
| this.observers = this.observers.reject( function(o) { return o.element==element }); |
| this._cacheObserverCallbacks(); |
| }, |
| |
| notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
| if(this[eventName+'Count'] > 0) |
| this.observers.each( function(o) { |
| if(o[eventName]) o[eventName](eventName, draggable, event); |
| }); |
| if(draggable.options[eventName]) draggable.options[eventName](draggable, event); |
| }, |
| |
| _cacheObserverCallbacks: function() { |
| ['onStart','onEnd','onDrag'].each( function(eventName) { |
| Draggables[eventName+'Count'] = Draggables.observers.select( |
| function(o) { return o[eventName]; } |
| ).length; |
| }); |
| } |
| } |
| |
| /*--------------------------------------------------------------------------*/ |
| |
| var Draggable = Class.create({ |
| initialize: function(element) { |
| var defaults = { |
| handle: false, |
| reverteffect: function(element, top_offset, left_offset) { |
| var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; |
| new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, |
| queue: {scope:'_draggable', position:'end'} |
| }); |
| }, |
| endeffect: function(element) { |
| var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; |
| new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, |
| queue: {scope:'_draggable', position:'end'}, |
| afterFinish: function(){ |
| Draggable._dragging[element] = false |
| } |
| }); |
| }, |
| zindex: 1000, |
| revert: false, |
| quiet: false, |
| scroll: false, |
| scrollSensitivity: 20, |
| scrollSpeed: 15, |
| snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } |
| delay: 0 |
| }; |
| |
| if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) |
| Object.extend(defaults, { |
| starteffect: function(element) { |
| element._opacity = Element.getOpacity(element); |
| Draggable._dragging[element] = true; |
| new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); |
| } |
| }); |
| |
| var options = Object.extend(defaults, arguments[1] || { }); |
| |
| this.element = $(element); |
| |
| if(options.handle && Object.isString(options.handle)) |
| this.handle = this.element.down('.'+options.handle, 0); |
| |
| if(!this.handle) this.handle = $(options.handle); |
| if(!this.handle) this.handle = this.element; |
| |
| if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { |
| options.scroll = $(options.scroll); |
| this._isScrollChild = Element.childOf(this.element, options.scroll); |
| } |
| |
| Element.makePositioned(this.element); // fix IE |
| |
| this.options = options; |
| this.dragging = false; |
| |
| this.eventMouseDown = this.initDrag.bindAsEventListener(this); |
| Event.observe(this.handle, "mousedown", this.eventMouseDown); |
| |
| Draggables.register(this); |
| }, |
| |
| destroy: function() { |
| Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); |
| Draggables.unregister(this); |
| }, |
| |
| currentDelta: function() { |
| return([ |
| parseInt(Element.getStyle(this.element,'left') || '0'), |
| parseInt(Element.getStyle(this.element,'top') || '0')]); |
| }, |
| |
| initDrag: function(event) { |
| if(!Object.isUndefined(Draggable._dragging[this.element]) && |
| Draggable._dragging[this.element]) return; |
| if(Event.isLeftClick(event)) { |
| // abort on form elements, fixes a Firefox issue |
| var src = Event.element(event); |
| if((tag_name = src.tagName.toUpperCase()) && ( |
| tag_name=='INPUT' || |
| tag_name=='SELECT' || |
| tag_name=='OPTION' || |
| tag_name=='BUTTON' || |
| tag_name=='TEXTAREA')) return; |
| |
| var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
| var pos = Position.cumulativeOffset(this.element); |
| this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); |
| |
| Draggables.activate(this); |
| Event.stop(event); |
| } |
| }, |
| |
| startDrag: function(event) { |
| this.dragging = true; |
| if(!this.delta) |
| this.delta = this.currentDelta(); |
| |
| if(this.options.zindex) { |
| this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); |
| this.element.style.zIndex = this.options.zindex; |
| } |
| |
| if(this.options.ghosting) { |
| this._clone = this.element.cloneNode(true); |
| this.element._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); |
| if (!this.element._originallyAbsolute) |
| Position.absolutize(this.element); |
| this.element.parentNode.insertBefore(this._clone, this.element); |
| } |
| |
| if(this.options.scroll) { |
| if (this.options.scroll == window) { |
| var where = this._getWindowScroll(this.options.scroll); |
| this.originalScrollLeft = where.left; |
| this.originalScrollTop = where.top; |
| } else { |
| this.originalScrollLeft = this.options.scroll.scrollLeft; |
| this.originalScrollTop = this.options.scroll.scrollTop; |
| } |
| } |
| |
| Draggables.notify('onStart', this, event); |
| |
| if(this.options.starteffect) this.options.starteffect(this.element); |
| }, |
| |
| updateDrag: function(event, pointer) { |
| if(!this.dragging) this.startDrag(event); |
| |
| if(!this.options.quiet){ |
| Position.prepare(); |
| Droppables.show(pointer, this.element); |
| } |
| |
| Draggables.notify('onDrag', this, event); |
| |
| this.draw(pointer); |
| if(this.options.change) this.options.change(this); |
| |
| if(this.options.scroll) { |
| this.stopScrolling(); |
| |
| var p; |
| if (this.options.scroll == window) { |
| with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } |
| } else { |
| p = Position.page(this.options.scroll); |
| p[0] += this.options.scroll.scrollLeft + Position.deltaX; |
| p[1] += this.options.scroll.scrollTop + Position.deltaY; |
| p.push(p[0]+this.options.scroll.offsetWidth); |
| p.push(p[1]+this.options.scroll.offsetHeight); |
| } |
| var speed = [0,0]; |
| if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); |
| if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); |
| if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); |
| if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); |
| this.startScrolling(speed); |
| } |
| |
| // fix AppleWebKit rendering |
| if(Prototype.Browser.WebKit) window.scrollBy(0,0); |
| |
| Event.stop(event); |
| }, |
| |
| finishDrag: function(event, success) { |
| this.dragging = false; |
| |
| if(this.options.quiet){ |
| Position.prepare(); |
| var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
| Droppables.show(pointer, this.element); |
| } |
| |
| if(this.options.ghosting) { |
| if (!this.element._originallyAbsolute) |
| Position.relativize(this.element); |
| delete this.element._originallyAbsolute; |
| Element.remove(this._clone); |
| this._clone = null; |
| } |
| |
| var dropped = false; |
| if(success) { |
| dropped = Droppables.fire(event, this.element); |
| if (!dropped) dropped = false; |
| } |
| if(dropped && this.options.onDropped) this.options.onDropped(this.element); |
| Draggables.notify('onEnd', this, event); |
| |
| var revert = this.options.revert; |
| if(revert && Object.isFunction(revert)) revert = revert(this.element); |
| |
| var d = this.currentDelta(); |
| if(revert && this.options.reverteffect) { |
| if (dropped == 0 || revert != 'failure') |
| this.options.reverteffect(this.element, |
| d[1]-this.delta[1], d[0]-this.delta[0]); |
| } else { |
| this.delta = d; |
| } |
| |
| if(this.options.zindex) |
| this.element.style.zIndex = this.originalZ; |
| |
| if(this.options.endeffect) |
| this.options.endeffect(this.element); |
| |
| Draggables.deactivate(this); |
| Droppables.reset(); |
| }, |
| |
| keyPress: function(event) { |
| if(event.keyCode!=Event.KEY_ESC) return; |
| this.finishDrag(event, false); |
| Event.stop(event); |
| }, |
| |
| endDrag: function(event) { |
| if(!this.dragging) return; |
| this.stopScrolling(); |
| this.finishDrag(event, true); |
| Event.stop(event); |
| }, |
| |
| draw: function(point) { |
| var pos = Position.cumulativeOffset(this.element); |
| if(this.options.ghosting) { |
| var r = Position.realOffset(this.element); |
| pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; |
| } |
| |
| var d = this.currentDelta(); |
| pos[0] -= d[0]; pos[1] -= d[1]; |
| |
| if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
| pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; |
| pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; |
| } |
| |
| var p = [0,1].map(function(i){ |
| return (point[i]-pos[i]-this.offset[i]) |
| }.bind(this)); |
| |
| if(this.options.snap) { |
| if(Object.isFunction(this.options.snap)) { |
| p = this.options.snap(p[0],p[1],this); |
| } else { |
| if(Object.isArray(this.options.snap)) { |
| p = p.map( function(v, i) { |
| return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)) |
| } else { |
| p = p.map( function(v) { |
| return (v/this.options.snap).round()*this.options.snap }.bind(this)) |
| } |
| }} |
| |
| var style = this.element.style; |
| if((!this.options.constraint) || (this.options.constraint=='horizontal')) |
| style.left = p[0] + "px"; |
| if((!this.options.constraint) || (this.options.constraint=='vertical')) |
| style.top = p[1] + "px"; |
| |
| if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering |
| }, |
| |
| stopScrolling: function() { |
| if(this.scrollInterval) { |
| clearInterval(this.scrollInterval); |
| this.scrollInterval = null; |
| Draggables._lastScrollPointer = null; |
| } |
| }, |
| |
| startScrolling: function(speed) { |
| if(!(speed[0] || speed[1])) return; |
| this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed]; |
| this.lastScrolled = new Date(); |
| this.scrollInterval = setInterval(this.scroll.bind(this), 10); |
| }, |
| |
| scroll: function() { |
| var current = new Date(); |
| var delta = current - this.lastScrolled; |
| this.lastScrolled = current; |
| if(this.options.scroll == window) { |
| with (this._getWindowScroll(this.options.scroll)) { |
| if (this.scrollSpeed[0] || this.scrollSpeed[1]) { |
| var d = delta / 1000; |
| this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] ); |
| } |
| } |
| } else { |
| this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000; |
| this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000; |
| } |
| |
| Position.prepare(); |
| Droppables.show(Draggables._lastPointer, this.element); |
| Draggables.notify('onDrag', this); |
| if (this._isScrollChild) { |
| Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer); |
| Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000; |
| Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000; |
| if (Draggables._lastScrollPointer[0] < 0) |
| Draggables._lastScrollPointer[0] = 0; |
| if (Draggables._lastScrollPointer[1] < 0) |
| Draggables._lastScrollPointer[1] = 0; |
| this.draw(Draggables._lastScrollPointer); |
| } |
| |
| if(this.options.change) this.options.change(this); |
| }, |
| |
| _getWindowScroll: function(w) { |
| var T, L, W, H; |
| with (w.document) { |
| if (w.document.documentElement && documentElement.scrollTop) { |
| T = documentElement.scrollTop; |
| L = documentElement.scrollLeft; |
| } else if (w.document.body) { |
| T = body.scrollTop; |
| L = body.scrollLeft; |
| } |
| if (w.innerWidth) { |
| W = w.innerWidth; |
| H = w.innerHeight; |
| } else if (w.document.documentElement && documentElement.clientWidth) { |
| W = documentElement.clientWidth; |
| H = documentElement.clientHeight; |
| } else { |
| W = body.offsetWidth; |
| H = body.offsetHeight |
| } |
| } |
| return { top: T, left: L, width: W, height: H }; |
| } |
| }); |
| |
| Draggable._dragging = { }; |
| |
| /*--------------------------------------------------------------------------*/ |
| |
| var SortableObserver = Class.create({ |
| initialize: function(element, observer) { |
| this.element = $(element); |
| this.observer = observer; |
| this.lastValue = Sortable.serialize(this.element); |
| }, |
| |
| onStart: function() { |
| this.lastValue = Sortable.serialize(this.element); |
| }, |
| |
| onEnd: function() { |
| Sortable.unmark(); |
| if(this.lastValue != Sortable.serialize(this.element)) |
| this.observer(this.element) |
| } |
| }); |
| |
| var Sortable = { |
| SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, |
| |
| sortables: { }, |
| |
| _findRootElement: function(element) { |
| while (element.tagName.toUpperCase() != "BODY") { |
| if(element.id && Sortable.sortables[element.id]) return element; |
| element = element.parentNode; |
| } |
| }, |
| |
| options: function(element) { |
| element = Sortable._findRootElement($(element)); |
| if(!element) return; |
| return Sortable.sortables[element.id]; |
| }, |
| |
| destroy: function(element){ |
| var s = Sortable.options(element); |
| |
| if(s) { |
| Draggables.removeObserver(s.element); |
| s.droppables.each(function(d){ Droppables.remove(d) }); |
| s.draggables.invoke('destroy'); |
| |
| delete Sortable.sortables[s.element.id]; |
| } |
| }, |
| |
| create: function(element) { |
| element = $(element); |
| var options = Object.extend({ |
| element: element, |
| tag: 'li', // assumes li children, override with tag: 'tagname' |
| dropOnEmpty: false, |
| tree: false, |
| treeTag: 'ul', |
| overlap: 'vertical', // one of 'vertical', 'horizontal' |
| constraint: 'vertical', // one of 'vertical', 'horizontal', false |
| containment: element, // also takes array of elements (or id's); or false |
| handle: false, // or a CSS class |
| only: false, |
| delay: 0, |
| hoverclass: null, |
| ghosting: false, |
| quiet: false, |
| scroll: false, |
| scrollSensitivity: 20, |
| scrollSpeed: 15, |
| format: this.SERIALIZE_RULE, |
| |
| // these take arrays of elements or ids and can be |
| // used for better initialization performance |
| elements: false, |
| handles: false, |
| |
| onChange: Prototype.emptyFunction, |
| onUpdate: Prototype.emptyFunction |
| }, arguments[1] || { }); |
| |
| // clear any old sortable with same element |
| this.destroy(element); |
| |
| // build options for the draggables |
| var options_for_draggable = { |
| revert: true, |
| quiet: options.quiet, |
| scroll: options.scroll, |
| scrollSpeed: options.scrollSpeed, |
| scrollSensitivity: options.scrollSensitivity, |
| delay: options.delay, |
| ghosting: options.ghosting, |
| constraint: options.constraint, |
| handle: options.handle }; |
| |
| if(options.starteffect) |
| options_for_draggable.starteffect = options.starteffect; |
| |
| if(options.reverteffect) |
| options_for_draggable.reverteffect = options.reverteffect; |
| else |
| if(options.ghosting) options_for_draggable.reverteffect = function(element) { |
| element.style.top = 0; |
| element.style.left = 0; |
| }; |
| |
| if(options.endeffect) |
| options_for_draggable.endeffect = options.endeffect; |
| |
| if(options.zindex) |
| options_for_draggable.zindex = options.zindex; |
| |
| // build options for the droppables |
| var options_for_droppable = { |
| overlap: options.overlap, |
| containment: options.containment, |
| tree: options.tree, |
| hoverclass: options.hoverclass, |
| onHover: Sortable.onHover |
| } |
| |
| var options_for_tree = { |
| onHover: Sortable.onEmptyHover, |
| overlap: options.overlap, |
| containment: options.containment, |
| hoverclass: options.hoverclass |
| } |
| |
| // fix for gecko engine |
| Element.cleanWhitespace(element); |
| |
| options.draggables = []; |
| options.droppables = []; |
| |
| // drop on empty handling |
| if(options.dropOnEmpty || options.tree) { |
| Droppables.add(element, options_for_tree); |
| options.droppables.push(element); |
| } |
| |
| (options.elements || this.findElements(element, options) || []).each( function(e,i) { |
| var handle = options.handles ? $(options.handles[i]) : |
| (options.handle ? $(e).select('.' + options.handle)[0] : e); |
| options.draggables.push( |
| new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); |
| Droppables.add(e, options_for_droppable); |
| if(options.tree) e.treeNode = element; |
| options.droppables.push(e); |
| }); |
| |
| if(options.tree) { |
| (Sortable.findTreeElements(element, options) || []).each( function(e) { |
| Droppables.add(e, options_for_tree); |
| e.treeNode = element; |
| options.droppables.push(e); |
| }); |
| } |
| |
| // keep reference |
| this.sortables[element.id] = options; |
| |
| // for onupdate |
| Draggables.addObserver(new SortableObserver(element, options.onUpdate)); |
| |
| }, |
| |
| // return all suitable-for-sortable elements in a guaranteed order |
| findElements: function(element, options) { |
| return Element.findChildren( |
| element, options.only, options.tree ? true : false, options.tag); |
| }, |
| |
| findTreeElements: function(element, options) { |
| return Element.findChildren( |
| element, options.only, options.tree ? true : false, options.treeTag); |
| }, |
| |
| onHover: function(element, dropon, overlap) { |
| if(Element.isParent(dropon, element)) return; |
| |
| if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { |
| return; |
| } else if(overlap>0.5) { |
| Sortable.mark(dropon, 'before'); |
| if(dropon.previousSibling != element) { |
| var oldParentNode = element.parentNode; |
| element.style.visibility = "hidden"; // fix gecko rendering |
| dropon.parentNode.insertBefore(element, dropon); |
| if(dropon.parentNode!=oldParentNode) |
| Sortable.options(oldParentNode).onChange(element); |
| Sortable.options(dropon.parentNode).onChange(element); |
| } |
| } else { |
| Sortable.mark(dropon, 'after'); |
| var nextElement = dropon.nextSibling || null; |
| if(nextElement != element) { |
| var oldParentNode = element.parentNode; |
| element.style.visibility = "hidden"; // fix gecko rendering |
| dropon.parentNode.insertBefore(element, nextElement); |
| if(dropon.parentNode!=oldParentNode) |
| Sortable.options(oldParentNode).onChange(element); |
| Sortable.options(dropon.parentNode).onChange(element); |
| } |
| } |
| }, |
| |
| onEmptyHover: function(element, dropon, overlap) { |
| var oldParentNode = element.parentNode; |
| var droponOptions = Sortable.options(dropon); |
| |
| if(!Element.isParent(dropon, element)) { |
| var index; |
| |
| var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
| var child = null; |
| |
| if(children) { |
| var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); |
| |
| for (index = 0; index < children.length; index += 1) { |
| if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { |
| offset -= Element.offsetSize (children[index], droponOptions.overlap); |
| } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { |
| child = index + 1 < children.length ? children[index + 1] : null; |
| break; |
| } else { |
| child = children[index]; |
| break; |
| } |
| } |
| } |
| |
| dropon.insertBefore(element, child); |
| |
| Sortable.options(oldParentNode).onChange(element); |
| droponOptions.onChange(element); |
| } |
| }, |
| |
| unmark: function() { |
| if(Sortable._marker) Sortable._marker.hide(); |
| }, |
| |
| mark: function(dropon, position) { |
| // mark on ghosting only |
| var sortable = Sortable.options(dropon.parentNode); |
| if(sortable && !sortable.ghosting) return; |
| |
| if(!Sortable._marker) { |
| Sortable._marker = |
| ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
| hide().addClassName('dropmarker').setStyle({position:'absolute'}); |
| document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); |
| } |
| var offsets = Position.cumulativeOffset(dropon); |
| Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
| |
| if(position=='after') |
| if(sortable.overlap == 'horizontal') |
| Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
| else |
| Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); |
| |
| Sortable._marker.show(); |
| }, |
| |
| _tree: function(element, options, parent) { |
| var children = Sortable.findElements(element, options) || []; |
| |
| for (var i = 0; i < children.length; ++i) { |
| var match = children[i].id.match(options.format); |
| |
| if (!match) continue; |
| |
| var child = { |
| id: encodeURIComponent(match ? match[1] : null), |
| element: element, |
| parent: parent, |
| children: [], |
| position: parent.children.length, |
| container: $(children[i]).down(options.treeTag) |
| } |
| |
| /* Get the element containing the children and recurse over it */ |
| if (child.container) |
| this._tree(child.container, options, child) |
| |
| parent.children.push (child); |
| } |
| |
| return parent; |
| }, |
| |
| tree: function(element) { |
| element = $(element); |
| var sortableOptions = this.options(element); |
| var options = Object.extend({ |
| tag: sortableOptions.tag, |
| treeTag: sortableOptions.treeTag, |
| only: sortableOptions.only, |
| name: element.id, |
| format: sortableOptions.format |
| }, arguments[1] || { }); |
| |
| var root = { |
| id: null, |
| parent: null, |
| children: [], |
| container: element, |
| position: 0 |
| } |
| |
| return Sortable._tree(element, options, root); |
| }, |
| |
| /* Construct a [i] index for a particular node */ |
| _constructIndex: function(node) { |
| var index = ''; |
| do { |
| if (node.id) index = '[' + node.position + ']' + index; |
| } while ((node = node.parent) != null); |
| return index; |
| }, |
| |
| sequence: function(element) { |
| element = $(element); |
| var options = Object.extend(this.options(element), arguments[1] || { }); |
| |
| return $(this.findElements(element, options) || []).map( function(item) { |
| return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; |
| }); |
| }, |
| |
| setSequence: function(element, new_sequence) { |
| element = $(element); |
| var options = Object.extend(this.options(element), arguments[2] || { }); |
| |
| var nodeMap = { }; |
| this.findElements(element, options).each( function(n) { |
| if (n.id.match(options.format)) |
| nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode]; |
| n.parentNode.removeChild(n); |
| }); |
| |
| new_sequence.each(function(ident) { |
| var n = nodeMap[ident]; |
| if (n) { |
| n[1].appendChild(n[0]); |
| delete nodeMap[ident]; |
| } |
| }); |
| }, |
| |
| serialize: function(element) { |
| element = $(element); |
| var options = Object.extend(Sortable.options(element), arguments[1] || { }); |
| var name = encodeURIComponent( |
| (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); |
| |
| if (options.tree) { |
| return Sortable.tree(element, arguments[1]).children.map( function (item) { |
| return [name + Sortable._constructIndex(item) + "[id]=" + |
| encodeURIComponent(item.id)].concat(item.children.map(arguments.callee)); |
| }).flatten().join('&'); |
| } else { |
| return Sortable.sequence(element, arguments[1]).map( function(item) { |
| return name + "[]=" + encodeURIComponent(item); |
| }).join('&'); |
| } |
| } |
| } |
| |
| // Returns true if child is contained within element |
| Element.isParent = function(child, element) { |
| if (!child.parentNode || child == element) return false; |
| if (child.parentNode == element) return true; |
| return Element.isParent(child.parentNode, element); |
| } |
| |
| Element.findChildren = function(element, only, recursive, tagName) { |
| if(!element.hasChildNodes()) return null; |
| tagName = tagName.toUpperCase(); |
| if(only) only = [only].flatten(); |
| var elements = []; |
| $A(element.childNodes).each( function(e) { |
| if(e.tagName && e.tagName.toUpperCase()==tagName && |
| (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) |
| elements.push(e); |
| if(recursive) { |
| var grandchildren = Element.findChildren(e, only, recursive, tagName); |
| if(grandchildren) elements.push(grandchildren); |
| } |
| }); |
| |
| return (elements.length>0 ? elements.flatten() : []); |
| } |
| |
| Element.offsetSize = function (element, type) { |
| return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; |
| } |
