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author | David Heinemeier Hansson <david@loudthinking.com> | 2005-06-26 12:03:43 +0000 |
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committer | David Heinemeier Hansson <david@loudthinking.com> | 2005-06-26 12:03:43 +0000 |
commit | 7da736f929e88f4730f160d28afc90667c26b966 (patch) | |
tree | 48e46a9dfe62728de3443bc43cdd14db30ef68ce /actionpack/lib/action_view/helpers/javascripts/dragdrop.js | |
parent | 66d99c913e1ad549b1880bbceb6f7561040d47b4 (diff) | |
download | rails-7da736f929e88f4730f160d28afc90667c26b966.tar.gz rails-7da736f929e88f4730f160d28afc90667c26b966.tar.bz2 rails-7da736f929e88f4730f160d28afc90667c26b966.zip |
Added script.aculo.us Javascripts (controls.js, dragdrop.js, effects.js) (NEEDS MORE DESCRIPTION) #1509 [Thomas Fuchs]
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1522 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
Diffstat (limited to 'actionpack/lib/action_view/helpers/javascripts/dragdrop.js')
-rw-r--r-- | actionpack/lib/action_view/helpers/javascripts/dragdrop.js | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/helpers/javascripts/dragdrop.js b/actionpack/lib/action_view/helpers/javascripts/dragdrop.js new file mode 100644 index 0000000000..f9ed0b7898 --- /dev/null +++ b/actionpack/lib/action_view/helpers/javascripts/dragdrop.js @@ -0,0 +1,385 @@ +// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) +// +// Element.Class part Copyright (c) 2005 by Rick Olson +// +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to +// permit persons to whom the Software is furnished to do so, subject to +// the following conditions: +// +// The above copyright notice and this permission notice shall be +// included in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +/*--------------------------------------------------------------------------*/ + +var Droppables = { + drops: false, + include_scroll_offsets: false, + + add: function(element) { + var element = $(element); + var options = { + greedy: true, + hoverclass: null + }.extend(arguments[1] || {}); + + // cache containers + if(options.containment) { + options._containers = new Array(); + var containment = options.containment; + if((typeof containment == 'object') && + (containment.constructor == Array)) { + for(var i=0; i<containment.length; i++) + options._containers.push($(containment[i])); + } else { + options._containers.push($(containment)); + } + options._containers_length = + options._containers.length-1; + } + + if(element.style.position=='') //fix IE + element.style.position = 'relative'; + + // activate the droppable + element.droppable = options; + + if(!this.drops) this.drops = []; + this.drops.push(element); + }, + + is_contained: function(element, drop) { + var containers = drop.droppable._containers; + var parentNode = element.parentNode; + var i = drop.droppable._containers_length; + do { if(parentNode==containers[i]) return true; } while (i--); + return false; + }, + + is_affected: function(pX, pY, element, drop) { + return ( + (drop!=element) && + ((!drop.droppable._containers) || + this.is_contained(element, drop)) && + ((!drop.droppable.accept) || + (Element.Class.has_any(element, drop.droppable.accept))) && + Position.within(drop, pX, pY) ); + }, + + deactivate: function(drop) { + Element.Class.remove(drop, drop.droppable.hoverclass); + this.last_active = null; + }, + + activate: function(drop) { + if(this.last_active) this.deactivate(this.last_active); + if(drop.droppable.hoverclass) { + Element.Class.add(drop, drop.droppable.hoverclass); + this.last_active = drop; + } + }, + + show: function(event, element) { + if(!this.drops) return; + var pX = Event.pointerX(event); + var pY = Event.pointerY(event); + if(this.include_scroll_offsets) Position.prepare(); + + var i = this.drops.length-1; do { + var drop = this.drops[i]; + if(this.is_affected(pX, pY, element, drop)) { + if(drop.droppable.onHover) + drop.droppable.onHover( + element, drop, Position.overlap(drop.droppable.overlap, drop)); + if(drop.droppable.greedy) { + this.activate(drop); + return; + } + } + } while (i--); + }, + + fire: function(event, element) { + if(!this.drops) return; + var pX = Event.pointerX(event); + var pY = Event.pointerY(event); + if(this.include_scroll_offsets) Position.prepare(); + + var i = this.drops.length-1; do { + var drop = this.drops[i]; + if(this.is_affected(pX, pY, element, drop)) + if(drop.droppable.onDrop) + drop.droppable.onDrop(element); + } while (i--); + }, + + reset: function() { + if(this.last_active) + this.deactivate(this.last_active); + } +} + +Draggables = { + observers: new Array(), + addObserver: function(observer) { + this.observers.push(observer); + }, + notify: function(eventName) { // 'onStart', 'onEnd' + for(var i = 0; i < this.observers.length; i++) + this.observers[i][eventName](); + } +} + +/*--------------------------------------------------------------------------*/ + +Draggable = Class.create(); +Draggable.prototype = { + initialize: function(element) { + var options = { + handle: false, + starteffect: function(element) { + new Effect2.Opacity(element, {duration:0.2, from:1.0, to:0.7}); + }, + reverteffect: function(element, top_offset, left_offset) { + new Effect2.MoveBy(element, -top_offset, -left_offset, {duration:0.4}); + }, + endeffect: function(element) { + new Effect2.Opacity(element, {duration:0.2, from:0.7, to:1.0}); + }, + zindex: 1000 + }.extend(arguments[1] || {}); + + this.element = $(element); + this.element.drag = this; + this.handle = options.handle ? $(options.handle) : this.element; + + 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.originalZ = parseInt(this.element.style.zIndex || "0"); + + this.options = options; + + this.active = false; + this.dragging = false; + + Event.observe(this.handle, "mousedown", this.startDrag.bindAsEventListener(this)); + Event.observe(document, "mouseup", this.endDrag.bindAsEventListener(this)); + Event.observe(document, "mousemove", this.update.bindAsEventListener(this)); + }, + 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)) { + this.active = true; + + var style = this.element.style; + this.originalY = this.element.offsetTop - this.currentTop(); - this.originalTop; + this.originalX = this.element.offsetLeft - this.currentLeft(); - this.originalLeft; + this.offsetY = event.clientY - this.originalY - this.originalTop; + this.offsetX = event.clientX - this.originalX - this.originalLeft; + + Event.stop(event); + } + }, + endDrag: function(event) { + if(this.active && this.dragging) { + this.active = false; + this.dragging = false; + + Droppables.fire(event, this.element); + Draggables.notify('onEnd'); + + if(this.options.revert && this.options.reverteffect) { + this.options.reverteffect(this.element, + this.currentTop()-this.originalTop, + this.currentLeft()-this.originalLeft); + } else { + this.originalLeft = this.currentLeft(); + this.originalTop = this.currentTop(); + } + this.element.style.zIndex = this.originalZ; + + if(this.options.endeffect) + this.options.endeffect(this.element); + + Droppables.reset(); + Event.stop(event); + } + this.active = false; + this.dragging = false; + }, + draw: function(event) { + var style = this.element.style; + this.originalX = this.element.offsetLeft - this.currentLeft() - this.originalLeft; + this.originalY = this.element.offsetTop - this.currentTop() - this.originalTop; + if((!this.options.constraint) || (this.options.constraint=='horizontal')) + style.left = ((event.clientX - this.originalX) - this.offsetX) + "px"; + if((!this.options.constraint) || (this.options.constraint=='vertical')) + style.top = ((event.clientY - this.originalY) - this.offsetY) + "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(style.position=="") style.position = "relative"; + style.zIndex = this.options.zindex; + Draggables.notify('onStart'); + 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); + } + } +} + +/*--------------------------------------------------------------------------*/ + +SortableObserver = Class.create(); +SortableObserver.prototype = { + 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() { + if(this.lastValue != Sortable.serialize(this.element)) + this.observer(this.element) + } +} + +Sortable = { + create: function(element) { + var element = $(element); + var options = { + tag: 'li', // assumes li children, override with tag: 'tagname' + 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, + hoverclass: null, + onChange: function() {}, + onUpdate: function() {} + }.extend(arguments[1] || {}); + element.sortable = options; + + // build options for the draggables + var options_for_draggable = { + revert: true, + constraint: options.constraint, + handle: handle }; + if(options.starteffect) + options_for_draggable.starteffect = options.starteffect; + if(options.reverteffect) + options_for_draggable.reverteffect = options.reverteffect; + 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, + hoverclass: options.hoverclass, + onHover: function(element, dropon, overlap) { + if(overlap>0.5) { + if(dropon.previousSibling != element) { + var oldParentNode = element.parentNode; + element.style.visibility = "hidden"; // fix gecko rendering + dropon.parentNode.insertBefore(element, dropon); + if(dropon.parentNode!=oldParentNode && oldParentNode.sortable) + oldParentNode.sortable.onChange(element); + if(dropon.parentNode.sortable) + dropon.parentNode.sortable.onChange(element); + } + } else { + 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 && oldParentNode.sortable) + oldParentNode.sortable.onChange(element); + if(dropon.parentNode.sortable) + dropon.parentNode.sortable.onChange(element); + } + } + } + } + + // fix for gecko engine + Element.cleanWhitespace(element); + + // for onupdate + Draggables.addObserver(new SortableObserver(element, options.onUpdate)); + + // make it so + var elements = element.childNodes; + for (var i = 0; i < elements.length; i++) + if(elements[i].tagName && elements[i].tagName==options.tag.toUpperCase() && + (!options.only || (Element.Class.has(elements[i], options.only)))) { + + // handles are per-draggable + var handle = options.handle ? + Element.Class.childrenWith(elements[i], options.handle)[0] : elements[i]; + + new Draggable(elements[i], options_for_draggable.extend({ handle: handle })); + Droppables.add(elements[i], options_for_droppable); + } + + }, + serialize: function(element) { + var element = $(element); + var options = { + tag: element.sortable.tag, + only: element.sortable.only, + name: element.id + }.extend(arguments[1] || {}); + + var items = $(element).childNodes; + var queryComponents = new Array(); + + for(var i=0; i<items.length; i++) + if(items[i].tagName && items[i].tagName==options.tag.toUpperCase() && + (!options.only || (Element.Class.has(items[i], options.only)))) + queryComponents.push( + encodeURIComponent(options.name) + "[]=" + + encodeURIComponent(items[i].id.split("_")[1])); + + return queryComponents.join("&"); + } +} + +/*--------------------------------------------------------------------------*/
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