X-Git-Url: https://projects.mako.cc/source/selectricity/blobdiff_plain/469888b30ec666c4f5e11f0be42cab539b2a7ab4..a12d4f62752f546f57421244e370e79965706ffb:/public/javascripts/dragdrop.js diff --git a/public/javascripts/dragdrop.js b/public/javascripts/dragdrop.js index 63a6824..a01b7be 100644 --- a/public/javascripts/dragdrop.js +++ b/public/javascripts/dragdrop.js @@ -1,6 +1,5 @@ // Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) -// -// Element.Class part Copyright (c) 2005 by Rick Olson +// (c) 2005 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz) // // See scriptaculous.js for full license. @@ -10,14 +9,15 @@ var Droppables = { drops: [], remove: function(element) { - this.drops = this.drops.reject(function(d) { return d.element==element }); + this.drops = this.drops.reject(function(d) { return d.element==$(element) }); }, add: function(element) { element = $(element); var options = Object.extend({ greedy: true, - hoverclass: null + hoverclass: null, + tree: false }, arguments[1] || {}); // cache containers @@ -31,67 +31,83 @@ var Droppables = { options._containers.push($(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 parentNode = element.parentNode; - return drop._containers.detect(function(c) { return parentNode == c }); + var containmentNode; + if(drop.tree) { + containmentNode = element.treeNode; + } else { + containmentNode = element.parentNode; + } + return drop._containers.detect(function(c) { return containmentNode == c }); }, - - isAffected: function(pX, pY, element, drop) { + + isAffected: function(point, element, drop) { return ( (drop.element!=element) && ((!drop._containers) || this.isContained(element, drop)) && ((!drop.accept) || - (Element.Class.has_any(element, drop.accept))) && - Position.within(drop.element, pX, pY) ); + (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.Class.remove(drop.element, drop.hoverclass); + Element.removeClassName(drop.element, drop.hoverclass); this.last_active = null; }, activate: function(drop) { - if(this.last_active) this.deactivate(this.last_active); if(drop.hoverclass) - Element.Class.add(drop.element, drop.hoverclass); + Element.addClassName(drop.element, drop.hoverclass); this.last_active = drop; }, - show: function(event, element) { + show: function(point, element) { if(!this.drops.length) return; - var pX = Event.pointerX(event); - var pY = Event.pointerY(event); - Position.prepare(); - - var i = this.drops.length-1; do { - var drop = this.drops[i]; - if(this.isAffected(pX, pY, element, drop)) { - if(drop.onHover) - drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); - if(drop.greedy) { - this.activate(drop); - return; - } - } - } while (i--); + var affected = []; if(this.last_active) this.deactivate(this.last_active); + this.drops.each( function(drop) { + if(Droppables.isAffected(point, element, drop)) + affected.push(drop); + }); + + if(affected.length>0) { + drop = Droppables.findDeepestChild(affected); + Position.within(drop.element, point[0], point[1]); + if(drop.onHover) + drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); + + 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.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); }, @@ -103,15 +119,85 @@ var Droppables = { } 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) { + 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.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.observers.push(observer); + this._cacheObserverCallbacks(); }, - removeObserver: function(element) { // element instead of obsever fixes mem leaks + + 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); + }); }, - notify: function(eventName, draggable) { // 'onStart', 'onEnd' - this.observers.invoke(eventName, draggable); + + _cacheObserverCallbacks: function() { + ['onStart','onEnd','onDrag'].each( function(eventName) { + Draggables[eventName+'Count'] = Draggables.observers.select( + function(o) { return o[eventName]; } + ).length; + }); } } @@ -127,89 +213,144 @@ Draggable.prototype = { }, 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.MoveBy(element, -top_offset, -left_offset, {duration:dur}); + element._revert = new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur}); }, endeffect: function(element) { - new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0}); + new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0}); }, zindex: 1000, - revert: false + revert: false, + scroll: false, + scrollSensitivity: 20, + scrollSpeed: 15, + snap: false // false, or xy or [x,y] or function(x,y){ return [x,y] } }, arguments[1] || {}); - this.element = $(element); - if(options.handle && (typeof options.handle == 'string')) - this.handle = Element.Class.childrenWith(this.element, options.handle)[0]; - + this.element = $(element); + + if(options.handle && (typeof options.handle == 'string')) { + var h = Element.childrenWithClassName(this.element, options.handle, true); + if(h.length>0) this.handle = h[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); Element.makePositioned(this.element); // fix IE - this.offsetX = 0; - this.offsetY = 0; - this.originalLeft = this.currentLeft(); - this.originalTop = this.currentTop(); - this.originalX = this.element.offsetLeft; - this.originalY = this.element.offsetTop; - - this.options = options; - - this.active = false; - this.dragging = false; + this.delta = this.currentDelta(); + this.options = options; + this.dragging = false; - this.eventMouseDown = this.startDrag.bindAsEventListener(this); - this.eventMouseUp = this.endDrag.bindAsEventListener(this); - this.eventMouseMove = this.update.bindAsEventListener(this); - this.eventKeypress = this.keyPress.bindAsEventListener(this); + this.eventMouseDown = this.initDrag.bindAsEventListener(this); + Event.observe(this.handle, "mousedown", this.eventMouseDown); - this.registerEvents(); + Draggables.register(this); }, + destroy: function() { Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); - this.unregisterEvents(); - }, - registerEvents: function() { - Event.observe(document, "mouseup", this.eventMouseUp); - Event.observe(document, "mousemove", this.eventMouseMove); - Event.observe(document, "keypress", this.eventKeypress); - Event.observe(this.handle, "mousedown", this.eventMouseDown); + Draggables.unregister(this); }, - unregisterEvents: function() { - //if(!this.active) return; - //Event.stopObserving(document, "mouseup", this.eventMouseUp); - //Event.stopObserving(document, "mousemove", this.eventMouseMove); - //Event.stopObserving(document, "keypress", this.eventKeypress); + + currentDelta: function() { + return([ + parseInt(Element.getStyle(this.element,'left') || '0'), + parseInt(Element.getStyle(this.element,'top') || '0')]); }, - currentLeft: function() { - return parseInt(this.element.style.left || '0'); - }, - currentTop: function() { - return parseInt(this.element.style.top || '0') - }, - startDrag: function(event) { - if(Event.isLeftClick(event)) { - + + initDrag: function(event) { + if(Event.isLeftClick(event)) { // abort on form elements, fixes a Firefox issue var src = Event.element(event); if(src.tagName && ( src.tagName=='INPUT' || src.tagName=='SELECT' || + src.tagName=='OPTION' || src.tagName=='BUTTON' || src.tagName=='TEXTAREA')) return; + + if(this.element._revert) { + this.element._revert.cancel(); + this.element._revert = null; + } - // this.registerEvents(); - this.active = true; var pointer = [Event.pointerX(event), Event.pointerY(event)]; - var offsets = Position.cumulativeOffset(this.element); - this.offsetX = (pointer[0] - offsets[0]); - this.offsetY = (pointer[1] - offsets[1]); + 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.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); + 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); + 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; + p[1] += this.options.scroll.scrollTop; + 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(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0); + + Event.stop(event); + }, + finishDrag: function(event, success) { - // this.unregisterEvents(); - - this.active = false; this.dragging = false; if(this.options.ghosting) { @@ -219,18 +360,17 @@ Draggable.prototype = { } if(success) Droppables.fire(event, this.element); - Draggables.notify('onEnd', this); + Draggables.notify('onEnd', this, event); var revert = this.options.revert; if(revert && typeof revert == 'function') revert = revert(this.element); - + + var d = this.currentDelta(); if(revert && this.options.reverteffect) { this.options.reverteffect(this.element, - this.currentTop()-this.originalTop, - this.currentLeft()-this.originalLeft); + d[1]-this.delta[1], d[0]-this.delta[0]); } else { - this.originalLeft = this.currentLeft(); - this.originalTop = this.currentTop(); + this.delta = d; } if(this.options.zindex) @@ -239,70 +379,125 @@ Draggable.prototype = { if(this.options.endeffect) this.options.endeffect(this.element); - + Draggables.deactivate(this); Droppables.reset(); }, + keyPress: function(event) { - if(this.active) { - if(event.keyCode==Event.KEY_ESC) { - this.finishDrag(event, false); - Event.stop(event); - } - } + if(event.keyCode!=Event.KEY_ESC) return; + this.finishDrag(event, false); + Event.stop(event); }, + endDrag: function(event) { - if(this.active && this.dragging) { - this.finishDrag(event, true); - Event.stop(event); - } - this.active = false; - this.dragging = false; + if(!this.dragging) return; + this.stopScrolling(); + this.finishDrag(event, true); + Event.stop(event); }, - draw: function(event) { - var pointer = [Event.pointerX(event), Event.pointerY(event)]; - var offsets = Position.cumulativeOffset(this.element); - offsets[0] -= this.currentLeft(); - offsets[1] -= this.currentTop(); + + draw: function(point) { + var pos = Position.cumulativeOffset(this.element); + var d = this.currentDelta(); + pos[0] -= d[0]; pos[1] -= d[1]; + + if(this.options.scroll && (this.options.scroll != window)) { + 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(typeof this.options.snap == 'function') { + p = this.options.snap(p[0],p[1]); + } else { + if(this.options.snap instanceof Array) { + p = p.map( function(v, i) { + return Math.round(v/this.options.snap[i])*this.options.snap[i] }.bind(this)) + } else { + p = p.map( function(v) { + return Math.round(v/this.options.snap)*this.options.snap }.bind(this)) + } + }} + var style = this.element.style; if((!this.options.constraint) || (this.options.constraint=='horizontal')) - style.left = (pointer[0] - offsets[0] - this.offsetX) + "px"; + style.left = p[0] + "px"; if((!this.options.constraint) || (this.options.constraint=='vertical')) - style.top = (pointer[1] - offsets[1] - this.offsetY) + "px"; + style.top = p[1] + "px"; if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering }, - update: function(event) { - if(this.active) { - if(!this.dragging) { - var style = this.element.style; - this.dragging = true; - - if(Element.getStyle(this.element,'position')=='') - style.position = "relative"; - - if(this.options.zindex) { - this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); - style.zIndex = this.options.zindex; - } - - if(this.options.ghosting) { - this._clone = this.element.cloneNode(true); - Position.absolutize(this.element); - this.element.parentNode.insertBefore(this._clone, this.element); + + stopScrolling: function() { + if(this.scrollInterval) { + clearInterval(this.scrollInterval); + this.scrollInterval = null; + Draggables._lastScrollPointer = null; + } + }, + + startScrolling: function(speed) { + 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] ); } - - Draggables.notify('onStart', this); - if(this.options.starteffect) this.options.starteffect(this.element); } - - Droppables.show(event, this.element); - this.draw(event); - if(this.options.change) this.options.change(this); - - // fix AppleWebKit rendering - if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0); - - Event.stop(event); - } + } 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); + 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 }; } } @@ -315,9 +510,11 @@ SortableObserver.prototype = { 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)) @@ -326,27 +523,41 @@ SortableObserver.prototype = { } var Sortable = { - sortables: new Array(), - options: function(element){ - element = $(element); - return this.sortables.detect(function(s) { return s.element == element }); + sortables: {}, + + _findRootElement: function(element) { + while (element.tagName != "BODY") { + if(element.id && Sortable.sortables[element.id]) return element; + element = element.parentNode; + } }, + + options: function(element) { + element = Sortable._findRootElement($(element)); + if(!element) return; + return Sortable.sortables[element.id]; + }, + destroy: function(element){ - element = $(element); - this.sortables.findAll(function(s) { return s.element == element }).each(function(s){ + var s = Sortable.options(element); + + if(s) { Draggables.removeObserver(s.element); s.droppables.each(function(d){ Droppables.remove(d) }); s.draggables.invoke('destroy'); - }); - this.sortables = this.sortables.reject(function(s) { return s.element == element }); + + delete Sortable.sortables[s.element.id]; + } }, + create: function(element) { element = $(element); var options = Object.extend({ element: element, tag: 'li', // assumes li children, override with tag: 'tagname' dropOnEmpty: false, - tree: false, // fixme: unimplemented + tree: false, + treeTag: 'ul', overlap: 'vertical', // one of 'vertical', 'horizontal' constraint: 'vertical', // one of 'vertical', 'horizontal', false containment: element, // also takes array of elements (or id's); or false @@ -354,7 +565,10 @@ var Sortable = { only: false, hoverclass: null, ghosting: false, - format: null, + scroll: false, + scrollSensitivity: 20, + scrollSpeed: 15, + format: /^[^_]*_(.*)$/, onChange: Prototype.emptyFunction, onUpdate: Prototype.emptyFunction }, arguments[1] || {}); @@ -365,6 +579,9 @@ var Sortable = { // build options for the draggables var options_for_draggable = { revert: true, + scroll: options.scroll, + scrollSpeed: options.scrollSpeed, + scrollSensitivity: options.scrollSensitivity, ghosting: options.ghosting, constraint: options.constraint, handle: options.handle }; @@ -390,9 +607,17 @@ var Sortable = { var options_for_droppable = { overlap: options.overlap, containment: options.containment, + tree: options.tree, hoverclass: options.hoverclass, - onHover: Sortable.onHover, - greedy: !options.dropOnEmpty + onHover: Sortable.onHover + //greedy: !options.dropOnEmpty + } + + var options_for_tree = { + onHover: Sortable.onEmptyHover, + overlap: options.overlap, + containment: options.containment, + hoverclass: options.hoverclass } // fix for gecko engine @@ -401,27 +626,33 @@ var Sortable = { options.draggables = []; options.droppables = []; - // make it so - // drop on empty handling - if(options.dropOnEmpty) { - Droppables.add(element, - {containment: options.containment, onHover: Sortable.onEmptyHover, greedy: false}); + if(options.dropOnEmpty || options.tree) { + Droppables.add(element, options_for_tree); options.droppables.push(element); } (this.findElements(element, options) || []).each( function(e) { // handles are per-draggable var handle = options.handle ? - Element.Class.childrenWith(e, options.handle)[0] : e; + Element.childrenWithClassName(e, 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.push(options); + this.sortables[element.id] = options; // for onupdate Draggables.addObserver(new SortableObserver(element, options.onUpdate)); @@ -430,23 +661,21 @@ var Sortable = { // return all suitable-for-sortable elements in a guaranteed order findElements: function(element, options) { - if(!element.hasChildNodes()) return null; - var elements = []; - $A(element.childNodes).each( function(e) { - if(e.tagName && e.tagName==options.tag.toUpperCase() && - (!options.only || (Element.Class.has(e, options.only)))) - elements.push(e); - if(options.tree) { - var grandchildren = this.findElements(e, options); - if(grandchildren) elements.push(grandchildren); - } - }); - - return (elements.length>0 ? elements.flatten() : null); + 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(overlap>0.5) { + 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; @@ -469,13 +698,37 @@ var Sortable = { } } }, - - onEmptyHover: function(element, dropon) { - if(element.parentNode!=dropon) { - var oldParentNode = element.parentNode; - dropon.appendChild(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}); + 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); - Sortable.options(dropon).onChange(element); + droponOptions.onChange(element); } }, @@ -491,29 +744,170 @@ var Sortable = { if(!Sortable._marker) { Sortable._marker = $('dropmarker') || document.createElement('DIV'); Element.hide(Sortable._marker); - Element.Class.add(Sortable._marker, 'dropmarker'); + Element.addClassName(Sortable._marker, 'dropmarker'); Sortable._marker.style.position = 'absolute'; document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); } var offsets = Position.cumulativeOffset(dropon); - Sortable._marker.style.top = offsets[1] + 'px'; - if(position=='after') Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px'; Sortable._marker.style.left = offsets[0] + 'px'; + Sortable._marker.style.top = offsets[1] + 'px'; + + if(position=='after') + if(sortable.overlap == 'horizontal') + Sortable._marker.style.left = (offsets[0]+dropon.clientWidth) + 'px'; + else + Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px'; + Element.show(Sortable._marker); }, + + _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: new Array, + position: parent.children.length, + container: Sortable._findChildrenElement(children[i], options.treeTag.toUpperCase()) + } + + /* 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; + }, - serialize: function(element) { + /* Finds the first element of the given tag type within a parent element. + Used for finding the first LI[ST] within a L[IST]I[TEM].*/ + _findChildrenElement: function (element, containerTag) { + if (element && element.hasChildNodes) + for (var i = 0; i < element.childNodes.length; ++i) + if (element.childNodes[i].tagName == containerTag) + return element.childNodes[i]; + + return null; + }, + + tree: function(element) { element = $(element); var sortableOptions = this.options(element); var options = Object.extend({ - tag: sortableOptions.tag, + tag: sortableOptions.tag, + treeTag: sortableOptions.treeTag, only: sortableOptions.only, name: element.id, - format: sortableOptions.format || /^[^_]*_(.*)$/ + format: sortableOptions.format }, arguments[1] || {}); - return $(this.findElements(element, options) || []).collect( function(item) { - return (encodeURIComponent(options.name) + "[]=" + - encodeURIComponent(item.id.match(options.format) ? item.id.match(options.format)[1] : '')); - }).join("&"); + + var root = { + id: null, + parent: null, + children: new Array, + 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) + "=" + + 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) { + if (type == 'vertical' || type == 'height') + return element.offsetHeight; + else + return element.offsetWidth; } \ No newline at end of file