diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers/javascripts/dragdrop.js')
| -rw-r--r-- | actionpack/lib/action_view/helpers/javascripts/dragdrop.js | 972 |
1 files changed, 0 insertions, 972 deletions
diff --git a/actionpack/lib/action_view/helpers/javascripts/dragdrop.js b/actionpack/lib/action_view/helpers/javascripts/dragdrop.js deleted file mode 100644 index bf5cfea66c..0000000000 --- a/actionpack/lib/action_view/helpers/javascripts/dragdrop.js +++ /dev/null @@ -1,972 +0,0 @@ -// Copyright (c) 2005-2008 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')]; -} |