dragdrop.js
972 lines
| 30.4 KiB
| application/javascript
|
JavascriptLexer
Jean-Philippe Lang
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r1580 | // Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) | |
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Jean-Philippe Lang
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r2430 | // (c) 2005-2008 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz) | |
| // | |||
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Jean-Philippe Lang
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r238 | // 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/ | |||
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r2 | ||
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r1580 | if(Object.isUndefined(Effect)) | |
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r238 | throw("dragdrop.js requires including script.aculo.us' effects.js library"); | |
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r2 | ||
| var Droppables = { | |||
| drops: [], | |||
| remove: function(element) { | |||
| this.drops = this.drops.reject(function(d) { return d.element==$(element) }); | |||
| }, | |||
| add: function(element) { | |||
| element = $(element); | |||
| var options = Object.extend({ | |||
| greedy: true, | |||
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r238 | hoverclass: null, | |
| tree: false | |||
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r1580 | }, arguments[1] || { }); | |
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r2 | ||
| // cache containers | |||
| if(options.containment) { | |||
| options._containers = []; | |||
| var containment = options.containment; | |||
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r1580 | if(Object.isArray(containment)) { | |
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r2 | containment.each( function(c) { options._containers.push($(c)) }); | |
| } else { | |||
| options._containers.push($(containment)); | |||
| } | |||
| } | |||
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r2430 | ||
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r2 | if(options.accept) options.accept = [options.accept].flatten(); | |
| Element.makePositioned(element); // fix IE | |||
| options.element = element; | |||
| this.drops.push(options); | |||
| }, | |||
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r2430 | ||
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r238 | findDeepestChild: function(drops) { | |
| deepest = drops[0]; | |||
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r2430 | ||
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r238 | for (i = 1; i < drops.length; ++i) | |
| if (Element.isParent(drops[i].element, deepest.element)) | |||
| deepest = drops[i]; | |||
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r238 | return deepest; | |
| }, | |||
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r2 | ||
| isContained: function(element, drop) { | |||
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r238 | var containmentNode; | |
| if(drop.tree) { | |||
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r2430 | containmentNode = element.treeNode; | |
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r238 | } else { | |
| containmentNode = element.parentNode; | |||
| } | |||
| return drop._containers.detect(function(c) { return containmentNode == c }); | |||
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r2 | }, | |
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r2430 | ||
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r2 | isAffected: function(point, element, drop) { | |
| return ( | |||
| (drop.element!=element) && | |||
| ((!drop._containers) || | |||
| this.isContained(element, drop)) && | |||
| ((!drop.accept) || | |||
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r2430 | (Element.classNames(element).detect( | |
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r2 | 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; | |||
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r1580 | var drop, affected = []; | |
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r2430 | ||
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r2 | this.drops.each( function(drop) { | |
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r238 | if(Droppables.isAffected(point, element, drop)) | |
| affected.push(drop); | |||
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r2 | }); | |
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r2430 | ||
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r1580 | if(affected.length>0) | |
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r238 | drop = Droppables.findDeepestChild(affected); | |
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r1580 | ||
| if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); | |||
| if (drop) { | |||
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r238 | Position.within(drop.element, point[0], point[1]); | |
| if(drop.onHover) | |||
| drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); | |||
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r2430 | ||
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r1580 | if (drop != this.last_active) Droppables.activate(drop); | |
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r238 | } | |
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r2 | }, | |
| fire: function(event, element) { | |||
| if(!this.last_active) return; | |||
| Position.prepare(); | |||
| if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) | |||
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r1580 | if (this.last_active.onDrop) { | |
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r2430 | this.last_active.onDrop(element, this.last_active.element, event); | |
| return true; | |||
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r1580 | } | |
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r2 | }, | |
| reset: function() { | |||
| if(this.last_active) | |||
| this.deactivate(this.last_active); | |||
| } | |||
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r2430 | }; | |
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r2 | ||
| var Draggables = { | |||
| drags: [], | |||
| observers: [], | |||
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r2430 | ||
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r2 | 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); | |||
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r2430 | ||
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r2 | Event.observe(document, "mouseup", this.eventMouseUp); | |
| Event.observe(document, "mousemove", this.eventMouseMove); | |||
| Event.observe(document, "keypress", this.eventKeypress); | |||
| } | |||
| this.drags.push(draggable); | |||
| }, | |||
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r2 | 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); | |||
| } | |||
| }, | |||
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r2430 | ||
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r2 | activate: function(draggable) { | |
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r2430 | if(draggable.options.delay) { | |
| this._timeout = setTimeout(function() { | |||
| Draggables._timeout = null; | |||
| window.focus(); | |||
| Draggables.activeDraggable = draggable; | |||
| }.bind(this), draggable.options.delay); | |||
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r238 | } else { | |
| window.focus(); // allows keypress events if window isn't currently focused, fails for Safari | |||
| this.activeDraggable = draggable; | |||
| } | |||
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r2 | }, | |
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r2430 | ||
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r238 | deactivate: function() { | |
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r2 | this.activeDraggable = null; | |
| }, | |||
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r2430 | ||
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r2 | 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; | |||
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r2 | this.activeDraggable.updateDrag(event, pointer); | |
| }, | |||
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r2 | endDrag: function(event) { | |
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r2430 | if(this._timeout) { | |
| clearTimeout(this._timeout); | |||
| this._timeout = null; | |||
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r238 | } | |
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r2 | if(!this.activeDraggable) return; | |
| this._lastPointer = null; | |||
| this.activeDraggable.endDrag(event); | |||
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r238 | this.activeDraggable = null; | |
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r2 | }, | |
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r2430 | ||
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r2 | keyPress: function(event) { | |
| if(this.activeDraggable) | |||
| this.activeDraggable.keyPress(event); | |||
| }, | |||
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r2430 | ||
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r2 | addObserver: function(observer) { | |
| this.observers.push(observer); | |||
| this._cacheObserverCallbacks(); | |||
| }, | |||
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r2 | removeObserver: function(element) { // element instead of observer fixes mem leaks | |
| this.observers = this.observers.reject( function(o) { return o.element==element }); | |||
| this._cacheObserverCallbacks(); | |||
| }, | |||
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r2430 | ||
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r2 | 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); | |||
| }); | |||
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r238 | if(draggable.options[eventName]) draggable.options[eventName](draggable, event); | |
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r2 | }, | |
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r2430 | ||
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r2 | _cacheObserverCallbacks: function() { | |
| ['onStart','onEnd','onDrag'].each( function(eventName) { | |||
| Draggables[eventName+'Count'] = Draggables.observers.select( | |||
| function(o) { return o[eventName]; } | |||
| ).length; | |||
| }); | |||
| } | |||
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r2430 | }; | |
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r2 | ||
| /*--------------------------------------------------------------------------*/ | |||
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r1580 | var Draggable = Class.create({ | |
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r2 | initialize: function(element) { | |
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r238 | var defaults = { | |
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r2 | 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; | |||
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r238 | new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, | |
| queue: {scope:'_draggable', position:'end'} | |||
| }); | |||
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r2 | }, | |
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r238 | endeffect: function(element) { | |
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r1580 | var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; | |
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r2430 | new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, | |
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r238 | queue: {scope:'_draggable', position:'end'}, | |
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r2430 | afterFinish: function(){ | |
| Draggable._dragging[element] = false | |||
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r238 | } | |
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r2430 | }); | |
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r2 | }, | |
| zindex: 1000, | |||
| revert: false, | |||
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r1580 | quiet: false, | |
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r238 | scroll: false, | |
| scrollSensitivity: 20, | |||
| scrollSpeed: 15, | |||
| snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } | |||
| delay: 0 | |||
| }; | |||
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r2430 | ||
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r1580 | if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) | |
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r238 | Object.extend(defaults, { | |
| starteffect: function(element) { | |||
| element._opacity = Element.getOpacity(element); | |||
| Draggable._dragging[element] = true; | |||
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r2430 | new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); | |
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r238 | } | |
| }); | |||
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r2430 | ||
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r1580 | var options = Object.extend(defaults, arguments[1] || { }); | |
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r2 | ||
| this.element = $(element); | |||
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r2430 | ||
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r1580 | if(options.handle && Object.isString(options.handle)) | |
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r238 | this.handle = this.element.down('.'+options.handle, 0); | |
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r2430 | ||
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r2 | if(!this.handle) this.handle = $(options.handle); | |
| if(!this.handle) this.handle = this.element; | |||
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r2430 | ||
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r238 | if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { | |
| options.scroll = $(options.scroll); | |||
| this._isScrollChild = Element.childOf(this.element, options.scroll); | |||
| } | |||
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r2 | ||
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r2430 | Element.makePositioned(this.element); // fix IE | |
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r2 | ||
| this.options = options; | |||
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r2430 | this.dragging = false; | |
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r2 | ||
| this.eventMouseDown = this.initDrag.bindAsEventListener(this); | |||
| Event.observe(this.handle, "mousedown", this.eventMouseDown); | |||
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r2 | Draggables.register(this); | |
| }, | |||
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r2 | destroy: function() { | |
| Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); | |||
| Draggables.unregister(this); | |||
| }, | |||
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r2430 | ||
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r2 | currentDelta: function() { | |
| return([ | |||
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r238 | parseInt(Element.getStyle(this.element,'left') || '0'), | |
| parseInt(Element.getStyle(this.element,'top') || '0')]); | |||
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r2 | }, | |
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r2430 | ||
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r2 | initDrag: function(event) { | |
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r1580 | if(!Object.isUndefined(Draggable._dragging[this.element]) && | |
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r238 | Draggable._dragging[this.element]) return; | |
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r2430 | if(Event.isLeftClick(event)) { | |
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r2 | // abort on form elements, fixes a Firefox issue | |
| var src = Event.element(event); | |||
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r1580 | if((tag_name = src.tagName.toUpperCase()) && ( | |
| tag_name=='INPUT' || | |||
| tag_name=='SELECT' || | |||
| tag_name=='OPTION' || | |||
| tag_name=='BUTTON' || | |||
| tag_name=='TEXTAREA')) return; | |||
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r2430 | ||
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r2 | 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]) }); | |||
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r2 | Draggables.activate(this); | |
| Event.stop(event); | |||
| } | |||
| }, | |||
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r2430 | ||
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r2 | startDrag: function(event) { | |
| this.dragging = true; | |||
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r1580 | if(!this.delta) | |
| this.delta = this.currentDelta(); | |||
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r2430 | ||
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r2 | if(this.options.zindex) { | |
| this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); | |||
| this.element.style.zIndex = this.options.zindex; | |||
| } | |||
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r2 | if(this.options.ghosting) { | |
| this._clone = this.element.cloneNode(true); | |||
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r2430 | this._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); | |
| if (!this._originallyAbsolute) | |||
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r1580 | Position.absolutize(this.element); | |
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r2 | this.element.parentNode.insertBefore(this._clone, this.element); | |
| } | |||
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r2430 | ||
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r238 | 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; | |||
| } | |||
| } | |||
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r2 | Draggables.notify('onStart', this, event); | |
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r2 | if(this.options.starteffect) this.options.starteffect(this.element); | |
| }, | |||
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r2 | updateDrag: function(event, pointer) { | |
| if(!this.dragging) this.startDrag(event); | |||
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r2430 | ||
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r1580 | if(!this.options.quiet){ | |
| Position.prepare(); | |||
| Droppables.show(pointer, this.element); | |||
| } | |||
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r2 | Draggables.notify('onDrag', this, event); | |
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r2 | this.draw(pointer); | |
| if(this.options.change) this.options.change(this); | |||
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r2430 | ||
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r238 | if(this.options.scroll) { | |
| this.stopScrolling(); | |||
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r2430 | ||
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r238 | 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); | |||
| } | |||
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r2430 | ||
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r2 | // fix AppleWebKit rendering | |
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r1580 | if(Prototype.Browser.WebKit) window.scrollBy(0,0); | |
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r2430 | ||
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r2 | Event.stop(event); | |
| }, | |||
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r2430 | ||
|
Jean-Philippe Lang
|
r2 | finishDrag: function(event, success) { | |
| this.dragging = false; | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r1580 | if(this.options.quiet){ | |
| Position.prepare(); | |||
| var pointer = [Event.pointerX(event), Event.pointerY(event)]; | |||
| Droppables.show(pointer, this.element); | |||
| } | |||
|
Jean-Philippe Lang
|
r2 | ||
| if(this.options.ghosting) { | |||
|
Jean-Philippe Lang
|
r2430 | if (!this._originallyAbsolute) | |
|
Jean-Philippe Lang
|
r1580 | Position.relativize(this.element); | |
|
Jean-Philippe Lang
|
r2430 | delete this._originallyAbsolute; | |
|
Jean-Philippe Lang
|
r2 | Element.remove(this._clone); | |
| this._clone = null; | |||
| } | |||
|
Jean-Philippe Lang
|
r2430 | var dropped = false; | |
| if(success) { | |||
| dropped = Droppables.fire(event, this.element); | |||
| if (!dropped) dropped = false; | |||
|
Jean-Philippe Lang
|
r1580 | } | |
| if(dropped && this.options.onDropped) this.options.onDropped(this.element); | |||
|
Jean-Philippe Lang
|
r2 | Draggables.notify('onEnd', this, event); | |
| var revert = this.options.revert; | |||
|
Jean-Philippe Lang
|
r1580 | if(revert && Object.isFunction(revert)) revert = revert(this.element); | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | var d = this.currentDelta(); | |
| if(revert && this.options.reverteffect) { | |||
|
Jean-Philippe Lang
|
r1580 | if (dropped == 0 || revert != 'failure') | |
| this.options.reverteffect(this.element, | |||
| d[1]-this.delta[1], d[0]-this.delta[0]); | |||
|
Jean-Philippe Lang
|
r2 | } else { | |
| this.delta = d; | |||
| } | |||
| if(this.options.zindex) | |||
| this.element.style.zIndex = this.originalZ; | |||
|
Jean-Philippe Lang
|
r2430 | if(this.options.endeffect) | |
|
Jean-Philippe Lang
|
r2 | this.options.endeffect(this.element); | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | Draggables.deactivate(this); | |
| Droppables.reset(); | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | keyPress: function(event) { | |
|
Jean-Philippe Lang
|
r238 | if(event.keyCode!=Event.KEY_ESC) return; | |
|
Jean-Philippe Lang
|
r2 | this.finishDrag(event, false); | |
| Event.stop(event); | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | endDrag: function(event) { | |
| if(!this.dragging) return; | |||
|
Jean-Philippe Lang
|
r238 | this.stopScrolling(); | |
|
Jean-Philippe Lang
|
r2 | this.finishDrag(event, true); | |
| Event.stop(event); | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | draw: function(point) { | |
| var pos = Position.cumulativeOffset(this.element); | |||
|
Jean-Philippe Lang
|
r238 | if(this.options.ghosting) { | |
| var r = Position.realOffset(this.element); | |||
| pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; | |||
| } | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | var d = this.currentDelta(); | |
| pos[0] -= d[0]; pos[1] -= d[1]; | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | 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; | |||
| } | |||
|
Jean-Philippe Lang
|
r2430 | ||
| var p = [0,1].map(function(i){ | |||
| return (point[i]-pos[i]-this.offset[i]) | |||
|
Jean-Philippe Lang
|
r238 | }.bind(this)); | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | if(this.options.snap) { | |
|
Jean-Philippe Lang
|
r1580 | if(Object.isFunction(this.options.snap)) { | |
|
Jean-Philippe Lang
|
r238 | p = this.options.snap(p[0],p[1],this); | |
|
Jean-Philippe Lang
|
r2 | } else { | |
|
Jean-Philippe Lang
|
r1580 | if(Object.isArray(this.options.snap)) { | |
|
Jean-Philippe Lang
|
r2 | p = p.map( function(v, i) { | |
|
Jean-Philippe Lang
|
r2430 | return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)); | |
|
Jean-Philippe Lang
|
r2 | } else { | |
| p = p.map( function(v) { | |||
|
Jean-Philippe Lang
|
r2430 | return (v/this.options.snap).round()*this.options.snap }.bind(this)); | |
|
Jean-Philippe Lang
|
r2 | } | |
| }} | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | 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"; | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering | |
|
Jean-Philippe Lang
|
r238 | }, | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | stopScrolling: function() { | |
| if(this.scrollInterval) { | |||
| clearInterval(this.scrollInterval); | |||
| this.scrollInterval = null; | |||
| Draggables._lastScrollPointer = null; | |||
| } | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | 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); | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | 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; | |||
| } | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | 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); | |||
| } | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | if(this.options.change) this.options.change(this); | |
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | _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; | |||
|
Jean-Philippe Lang
|
r2430 | H = body.offsetHeight; | |
|
Jean-Philippe Lang
|
r238 | } | |
| } | |||
| return { top: T, left: L, width: W, height: H }; | |||
|
Jean-Philippe Lang
|
r2 | } | |
|
Jean-Philippe Lang
|
r1580 | }); | |
| Draggable._dragging = { }; | |||
|
Jean-Philippe Lang
|
r2 | ||
| /*--------------------------------------------------------------------------*/ | |||
|
Jean-Philippe Lang
|
r1580 | var SortableObserver = Class.create({ | |
|
Jean-Philippe Lang
|
r2 | initialize: function(element, observer) { | |
| this.element = $(element); | |||
| this.observer = observer; | |||
| this.lastValue = Sortable.serialize(this.element); | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | onStart: function() { | |
| this.lastValue = Sortable.serialize(this.element); | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | onEnd: function() { | |
| Sortable.unmark(); | |||
| if(this.lastValue != Sortable.serialize(this.element)) | |||
| this.observer(this.element) | |||
| } | |||
|
Jean-Philippe Lang
|
r1580 | }); | |
|
Jean-Philippe Lang
|
r2 | ||
| var Sortable = { | |||
|
Jean-Philippe Lang
|
r238 | SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r1580 | sortables: { }, | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | _findRootElement: function(element) { | |
|
Jean-Philippe Lang
|
r2430 | while (element.tagName.toUpperCase() != "BODY") { | |
|
Jean-Philippe Lang
|
r238 | 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]; | |||
|
Jean-Philippe Lang
|
r2 | }, | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | destroy: function(element){ | |
|
Jean-Philippe Lang
|
r2430 | element = $(element); | |
| var s = Sortable.sortables[element.id]; | |||
|
Jean-Philippe Lang
|
r238 | if(s) { | |
|
Jean-Philippe Lang
|
r2 | Draggables.removeObserver(s.element); | |
| s.droppables.each(function(d){ Droppables.remove(d) }); | |||
| s.draggables.invoke('destroy'); | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | delete Sortable.sortables[s.element.id]; | |
| } | |||
|
Jean-Philippe Lang
|
r2 | }, | |
|
Jean-Philippe Lang
|
r238 | ||
|
Jean-Philippe Lang
|
r2 | create: function(element) { | |
| element = $(element); | |||
|
Jean-Philippe Lang
|
r2430 | var options = Object.extend({ | |
|
Jean-Philippe Lang
|
r2 | element: element, | |
| tag: 'li', // assumes li children, override with tag: 'tagname' | |||
| dropOnEmpty: false, | |||
|
Jean-Philippe Lang
|
r238 | tree: false, | |
| treeTag: 'ul', | |||
|
Jean-Philippe Lang
|
r2 | 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, | |||
|
Jean-Philippe Lang
|
r238 | delay: 0, | |
|
Jean-Philippe Lang
|
r2 | hoverclass: null, | |
| ghosting: false, | |||
|
Jean-Philippe Lang
|
r2430 | quiet: false, | |
|
Jean-Philippe Lang
|
r238 | scroll: false, | |
| scrollSensitivity: 20, | |||
| scrollSpeed: 15, | |||
| format: this.SERIALIZE_RULE, | |||
|
Jean-Philippe Lang
|
r2430 | ||
| // these take arrays of elements or ids and can be | |||
|
Jean-Philippe Lang
|
r1580 | // used for better initialization performance | |
| elements: false, | |||
| handles: false, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | onChange: Prototype.emptyFunction, | |
| onUpdate: Prototype.emptyFunction | |||
|
Jean-Philippe Lang
|
r1580 | }, arguments[1] || { }); | |
|
Jean-Philippe Lang
|
r2 | ||
| // clear any old sortable with same element | |||
| this.destroy(element); | |||
| // build options for the draggables | |||
| var options_for_draggable = { | |||
| revert: true, | |||
|
Jean-Philippe Lang
|
r1580 | quiet: options.quiet, | |
|
Jean-Philippe Lang
|
r238 | scroll: options.scroll, | |
| scrollSpeed: options.scrollSpeed, | |||
| scrollSensitivity: options.scrollSensitivity, | |||
| delay: options.delay, | |||
|
Jean-Philippe Lang
|
r2 | 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; | |||
|
Jean-Philippe Lang
|
r2430 | // build options for the droppables | |
|
Jean-Philippe Lang
|
r2 | var options_for_droppable = { | |
| overlap: options.overlap, | |||
| containment: options.containment, | |||
|
Jean-Philippe Lang
|
r238 | tree: options.tree, | |
|
Jean-Philippe Lang
|
r2 | hoverclass: options.hoverclass, | |
|
Jean-Philippe Lang
|
r238 | onHover: Sortable.onHover | |
|
Jean-Philippe Lang
|
r2430 | }; | |
|
Jean-Philippe Lang
|
r238 | var options_for_tree = { | |
| onHover: Sortable.onEmptyHover, | |||
| overlap: options.overlap, | |||
| containment: options.containment, | |||
| hoverclass: options.hoverclass | |||
|
Jean-Philippe Lang
|
r2430 | }; | |
|
Jean-Philippe Lang
|
r2 | ||
| // fix for gecko engine | |||
|
Jean-Philippe Lang
|
r2430 | Element.cleanWhitespace(element); | |
|
Jean-Philippe Lang
|
r2 | ||
| options.draggables = []; | |||
| options.droppables = []; | |||
| // drop on empty handling | |||
|
Jean-Philippe Lang
|
r238 | if(options.dropOnEmpty || options.tree) { | |
| Droppables.add(element, options_for_tree); | |||
|
Jean-Philippe Lang
|
r2 | options.droppables.push(element); | |
| } | |||
|
Jean-Philippe Lang
|
r1580 | (options.elements || this.findElements(element, options) || []).each( function(e,i) { | |
| var handle = options.handles ? $(options.handles[i]) : | |||
|
Jean-Philippe Lang
|
r2430 | (options.handle ? $(e).select('.' + options.handle)[0] : e); | |
|
Jean-Philippe Lang
|
r2 | options.draggables.push( | |
| new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); | |||
| Droppables.add(e, options_for_droppable); | |||
|
Jean-Philippe Lang
|
r238 | if(options.tree) e.treeNode = element; | |
|
Jean-Philippe Lang
|
r2430 | options.droppables.push(e); | |
|
Jean-Philippe Lang
|
r2 | }); | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | if(options.tree) { | |
| (Sortable.findTreeElements(element, options) || []).each( function(e) { | |||
| Droppables.add(e, options_for_tree); | |||
| e.treeNode = element; | |||
| options.droppables.push(e); | |||
| }); | |||
| } | |||
|
Jean-Philippe Lang
|
r2 | ||
| // keep reference | |||
|
Jean-Philippe Lang
|
r238 | this.sortables[element.id] = options; | |
|
Jean-Philippe Lang
|
r2 | ||
| // for onupdate | |||
| Draggables.addObserver(new SortableObserver(element, options.onUpdate)); | |||
| }, | |||
| // return all suitable-for-sortable elements in a guaranteed order | |||
| findElements: function(element, options) { | |||
|
Jean-Philippe Lang
|
r238 | return Element.findChildren( | |
| element, options.only, options.tree ? true : false, options.tag); | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | findTreeElements: function(element, options) { | |
| return Element.findChildren( | |||
| element, options.only, options.tree ? true : false, options.treeTag); | |||
|
Jean-Philippe Lang
|
r2 | }, | |
| onHover: function(element, dropon, overlap) { | |||
|
Jean-Philippe Lang
|
r238 | if(Element.isParent(dropon, element)) return; | |
| if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { | |||
| return; | |||
| } else if(overlap>0.5) { | |||
|
Jean-Philippe Lang
|
r2 | Sortable.mark(dropon, 'before'); | |
| if(dropon.previousSibling != element) { | |||
| var oldParentNode = element.parentNode; | |||
| element.style.visibility = "hidden"; // fix gecko rendering | |||
| dropon.parentNode.insertBefore(element, dropon); | |||
|
Jean-Philippe Lang
|
r2430 | if(dropon.parentNode!=oldParentNode) | |
|
Jean-Philippe Lang
|
r2 | 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); | |||
|
Jean-Philippe Lang
|
r2430 | if(dropon.parentNode!=oldParentNode) | |
|
Jean-Philippe Lang
|
r2 | Sortable.options(oldParentNode).onChange(element); | |
| Sortable.options(dropon.parentNode).onChange(element); | |||
| } | |||
| } | |||
| }, | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | onEmptyHover: function(element, dropon, overlap) { | |
| var oldParentNode = element.parentNode; | |||
| var droponOptions = Sortable.options(dropon); | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | if(!Element.isParent(dropon, element)) { | |
| var index; | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); | |
| var child = null; | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | if(children) { | |
| var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | 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; | |||
| } | |||
| } | |||
| } | |||
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r238 | dropon.insertBefore(element, child); | |
|
Jean-Philippe Lang
|
r2430 | ||
|
Jean-Philippe Lang
|
r2 | Sortable.options(oldParentNode).onChange(element); | |
|
Jean-Philippe Lang
|
r238 | droponOptions.onChange(element); | |
|
Jean-Philippe Lang
|
r2 | } | |
| }, | |||
| unmark: function() { | |||
|
Jean-Philippe Lang
|
r238 | if(Sortable._marker) Sortable._marker.hide(); | |
|
Jean-Philippe Lang
|
r2 | }, | |
| mark: function(dropon, position) { | |||
| // mark on ghosting only | |||
| var sortable = Sortable.options(dropon.parentNode); | |||
|
Jean-Philippe Lang
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r2430 | if(sortable && !sortable.ghosting) return; | |
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r2 | ||
| if(!Sortable._marker) { | |||
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r2430 | Sortable._marker = | |
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r238 | ($('dropmarker') || Element.extend(document.createElement('DIV'))). | |
| hide().addClassName('dropmarker').setStyle({position:'absolute'}); | |||
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r2 | document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); | |
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r2430 | } | |
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r2 | var offsets = Position.cumulativeOffset(dropon); | |
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r238 | Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); | |
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r2430 | ||
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r2 | if(position=='after') | |
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r2430 | if(sortable.overlap == 'horizontal') | |
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r238 | Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); | |
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r2 | else | |
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r238 | Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); | |
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r2430 | ||
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r238 | Sortable._marker.show(); | |
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r2 | }, | |
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r2430 | ||
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r238 | _tree: function(element, options, parent) { | |
| var children = Sortable.findElements(element, options) || []; | |||
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r2430 | ||
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r238 | for (var i = 0; i < children.length; ++i) { | |
| var match = children[i].id.match(options.format); | |||
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r2 | ||
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r238 | if (!match) continue; | |
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r2430 | ||
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r238 | var child = { | |
| id: encodeURIComponent(match ? match[1] : null), | |||
| element: element, | |||
| parent: parent, | |||
| children: [], | |||
| position: parent.children.length, | |||
| container: $(children[i]).down(options.treeTag) | |||
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r2430 | }; | |
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r238 | /* Get the element containing the children and recurse over it */ | |
| if (child.container) | |||
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r2430 | this._tree(child.container, options, child); | |
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r238 | parent.children.push (child); | |
| } | |||
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r2430 | return parent; | |
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r238 | }, | |
| tree: function(element) { | |||
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r2 | element = $(element); | |
| var sortableOptions = this.options(element); | |||
| var options = Object.extend({ | |||
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r238 | tag: sortableOptions.tag, | |
| treeTag: sortableOptions.treeTag, | |||
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r2 | only: sortableOptions.only, | |
| name: element.id, | |||
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r238 | format: sortableOptions.format | |
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r1580 | }, arguments[1] || { }); | |
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r2430 | ||
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r238 | var root = { | |
| id: null, | |||
| parent: null, | |||
| children: [], | |||
| container: element, | |||
| position: 0 | |||
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r2430 | }; | |
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r238 | 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); | |||
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r1580 | var options = Object.extend(this.options(element), arguments[1] || { }); | |
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r2430 | ||
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r2 | return $(this.findElements(element, options) || []).map( function(item) { | |
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r238 | return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; | |
| }); | |||
| }, | |||
| setSequence: function(element, new_sequence) { | |||
| element = $(element); | |||
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r1580 | var options = Object.extend(this.options(element), arguments[2] || { }); | |
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r2430 | ||
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r1580 | var nodeMap = { }; | |
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r238 | 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); | |||
| }); | |||
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r2430 | ||
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r238 | new_sequence.each(function(ident) { | |
| var n = nodeMap[ident]; | |||
| if (n) { | |||
| n[1].appendChild(n[0]); | |||
| delete nodeMap[ident]; | |||
| } | |||
| }); | |||
| }, | |||
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r2430 | ||
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r238 | serialize: function(element) { | |
| element = $(element); | |||
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r1580 | var options = Object.extend(Sortable.options(element), arguments[1] || { }); | |
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r238 | var name = encodeURIComponent( | |
| (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); | |||
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r2430 | ||
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r238 | if (options.tree) { | |
| return Sortable.tree(element, arguments[1]).children.map( function (item) { | |||
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r2430 | return [name + Sortable._constructIndex(item) + "[id]=" + | |
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r238 | 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('&'); | |||
| } | |||
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r2 | } | |
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r2430 | }; | |
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r238 | ||
| // 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); | |||
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r2430 | }; | |
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r238 | ||
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r2430 | Element.findChildren = function(element, only, recursive, tagName) { | |
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r238 | 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() : []); | |||
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r2430 | }; | |
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r238 | ||
| Element.offsetSize = function (element, type) { | |||
| return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; | |||
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r2430 | }; |