537 lines
No EOL
18 KiB
JavaScript
537 lines
No EOL
18 KiB
JavaScript
// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
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//
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// Element.Class part Copyright (c) 2005 by Rick Olson
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Element.Class = {
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// Element.toggleClass(element, className) toggles the class being on/off
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// Element.toggleClass(element, className1, className2) toggles between both classes,
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// defaulting to className1 if neither exist
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toggle: function(element, className) {
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if(Element.Class.has(element, className)) {
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Element.Class.remove(element, className);
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if(arguments.length == 3) Element.Class.add(element, arguments[2]);
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} else {
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Element.Class.add(element, className);
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if(arguments.length == 3) Element.Class.remove(element, arguments[2]);
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}
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},
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// gets space-delimited classnames of an element as an array
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get: function(element) {
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element = $(element);
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return element.className.split(' ');
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},
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// functions adapted from original functions by Gavin Kistner
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remove: function(element) {
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element = $(element);
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var regEx;
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for(var i = 1; i < arguments.length; i++) {
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regEx = new RegExp("^" + arguments[i] + "\\b\\s*|\\s*\\b" + arguments[i] + "\\b", 'g');
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element.className = element.className.replace(regEx, '')
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}
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},
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add: function(element) {
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element = $(element);
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for(var i = 1; i < arguments.length; i++) {
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Element.Class.remove(element, arguments[i]);
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element.className += (element.className.length > 0 ? ' ' : '') + arguments[i];
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}
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},
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// returns true if all given classes exist in said element
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has: function(element) {
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element = $(element);
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if(!element || !element.className) return false;
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var regEx;
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for(var i = 1; i < arguments.length; i++) {
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regEx = new RegExp("\\b" + arguments[i] + "\\b");
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if(!regEx.test(element.className)) return false;
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}
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return true;
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},
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// expects arrays of strings and/or strings as optional paramters
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// Element.Class.has_any(element, ['classA','classB','classC'], 'classD')
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has_any: function(element) {
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element = $(element);
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if(!element || !element.className) return false;
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var regEx;
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for(var i = 1; i < arguments.length; i++) {
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if((typeof arguments[i] == 'object') &&
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(arguments[i].constructor == Array)) {
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for(var j = 0; j < arguments[i].length; j++) {
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regEx = new RegExp("\\b" + arguments[i][j] + "\\b");
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if(regEx.test(element.className)) return true;
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}
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} else {
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regEx = new RegExp("\\b" + arguments[i] + "\\b");
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if(regEx.test(element.className)) return true;
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}
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}
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return false;
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},
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childrenWith: function(element, className) {
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var children = $(element).getElementsByTagName('*');
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var elements = new Array();
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for (var i = 0; i < children.length; i++) {
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if (Element.Class.has(children[i], className)) {
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elements.push(children[i]);
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break;
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}
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}
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return elements;
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}
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}
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/*--------------------------------------------------------------------------*/
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var Droppables = {
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drops: false,
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remove: function(element) {
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for(var i = 0; i < this.drops.length; i++)
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if(this.drops[i].element == element)
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this.drops.splice(i,1);
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},
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add: function(element) {
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var element = $(element);
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var options = Object.extend({
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greedy: true,
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hoverclass: null
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}, arguments[1] || {});
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// cache containers
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if(options.containment) {
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options._containers = new Array();
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var containment = options.containment;
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if((typeof containment == 'object') &&
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(containment.constructor == Array)) {
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for(var i=0; i<containment.length; i++)
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options._containers.push($(containment[i]));
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} else {
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options._containers.push($(containment));
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}
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options._containers_length =
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options._containers.length-1;
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}
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Element.makePositioned(element); // fix IE
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options.element = element;
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// activate the droppable
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if(!this.drops) this.drops = [];
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this.drops.push(options);
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},
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is_contained: function(element, drop) {
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var containers = drop._containers;
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var parentNode = element.parentNode;
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var i = drop._containers_length;
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do { if(parentNode==containers[i]) return true; } while (i--);
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return false;
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},
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is_affected: function(pX, pY, element, drop) {
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return (
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(drop.element!=element) &&
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((!drop._containers) ||
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this.is_contained(element, drop)) &&
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((!drop.accept) ||
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(Element.Class.has_any(element, drop.accept))) &&
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Position.within(drop.element, pX, pY) );
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},
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deactivate: function(drop) {
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Element.Class.remove(drop.element, drop.hoverclass);
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this.last_active = null;
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},
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activate: function(drop) {
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if(this.last_active) this.deactivate(this.last_active);
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if(drop.hoverclass) {
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Element.Class.add(drop.element, drop.hoverclass);
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this.last_active = drop;
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}
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},
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show: function(event, element) {
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if(!this.drops) return;
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var pX = Event.pointerX(event);
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var pY = Event.pointerY(event);
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Position.prepare();
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var i = this.drops.length-1; do {
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var drop = this.drops[i];
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if(this.is_affected(pX, pY, element, drop)) {
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if(drop.onHover)
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drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
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if(drop.greedy) {
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this.activate(drop);
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return;
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}
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}
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} while (i--);
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},
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fire: function(event, element) {
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if(!this.last_active) return;
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Position.prepare();
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if (this.is_affected(Event.pointerX(event), Event.pointerY(event), element, this.last_active))
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if (this.last_active.onDrop)
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this.last_active.onDrop(element, this.last_active);
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},
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reset: function() {
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if(this.last_active)
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this.deactivate(this.last_active);
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}
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}
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Draggables = {
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observers: new Array(),
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addObserver: function(observer) {
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this.observers.push(observer);
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},
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removeObserver: function(element) { // element instead of obsever fixes mem leaks
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for(var i = 0; i < this.observers.length; i++)
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if(this.observers[i].element && (this.observers[i].element == element))
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this.observers.splice(i,1);
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},
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notify: function(eventName, draggable) { // 'onStart', 'onEnd'
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for(var i = 0; i < this.observers.length; i++)
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this.observers[i][eventName](draggable);
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}
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}
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/*--------------------------------------------------------------------------*/
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Draggable = Class.create();
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Draggable.prototype = {
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initialize: function(element) {
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var options = Object.extend({
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handle: false,
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starteffect: function(element) {
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new Effect.Opacity(element, {duration:0.2, from:1.0, to:0.7});
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},
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reverteffect: function(element, top_offset, left_offset) {
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new Effect.MoveBy(element, -top_offset, -left_offset, {duration:0.4});
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},
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endeffect: function(element) {
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new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0});
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},
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zindex: 1000,
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revert: false
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}, arguments[1] || {});
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this.element = $(element);
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this.handle = options.handle ? $(options.handle) : this.element;
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Element.makePositioned(this.element); // fix IE
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this.offsetX = 0;
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this.offsetY = 0;
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this.originalLeft = this.currentLeft();
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this.originalTop = this.currentTop();
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this.originalX = this.element.offsetLeft;
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this.originalY = this.element.offsetTop;
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this.originalZ = parseInt(this.element.style.zIndex || "0");
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this.options = options;
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this.active = false;
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this.dragging = false;
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this.eventMouseDown = this.startDrag.bindAsEventListener(this);
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this.eventMouseUp = this.endDrag.bindAsEventListener(this);
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this.eventMouseMove = this.update.bindAsEventListener(this);
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this.eventKeypress = this.keyPress.bindAsEventListener(this);
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Event.observe(this.handle, "mousedown", this.eventMouseDown);
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Event.observe(document, "mouseup", this.eventMouseUp);
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Event.observe(document, "mousemove", this.eventMouseMove);
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Event.observe(document, "keypress", this.eventKeypress);
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},
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destroy: function() {
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Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
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Event.stopObserving(document, "mouseup", this.eventMouseUp);
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Event.stopObserving(document, "mousemove", this.eventMouseMove);
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Event.stopObserving(document, "keypress", this.eventKeypress);
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},
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currentLeft: function() {
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return parseInt(this.element.style.left || '0');
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},
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currentTop: function() {
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return parseInt(this.element.style.top || '0')
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},
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startDrag: function(event) {
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if(Event.isLeftClick(event)) {
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this.active = true;
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var style = this.element.style;
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this.originalY = this.element.offsetTop - this.currentTop() - this.originalTop;
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this.originalX = this.element.offsetLeft - this.currentLeft() - this.originalLeft;
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this.offsetY = event.clientY - this.originalY - this.originalTop;
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this.offsetX = event.clientX - this.originalX - this.originalLeft;
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Event.stop(event);
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}
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},
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finishDrag: function(event, success) {
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this.active = false;
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this.dragging = false;
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if(success) Droppables.fire(event, this.element);
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Draggables.notify('onEnd', this);
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var revert = this.options.revert;
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if(revert && typeof revert == 'function') revert = revert(this.element);
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if(revert && this.options.reverteffect) {
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this.options.reverteffect(this.element,
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this.currentTop()-this.originalTop,
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this.currentLeft()-this.originalLeft);
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} else {
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this.originalLeft = this.currentLeft();
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this.originalTop = this.currentTop();
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}
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this.element.style.zIndex = this.originalZ;
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if(this.options.endeffect)
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this.options.endeffect(this.element);
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Droppables.reset();
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},
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keyPress: function(event) {
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if(this.active) {
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if(event.keyCode==Event.KEY_ESC) {
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this.finishDrag(event, false);
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Event.stop(event);
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}
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}
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},
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endDrag: function(event) {
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if(this.active && this.dragging) {
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this.finishDrag(event, true);
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Event.stop(event);
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}
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this.active = false;
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this.dragging = false;
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},
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draw: function(event) {
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var style = this.element.style;
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this.originalX = this.element.offsetLeft - this.currentLeft() - this.originalLeft;
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this.originalY = this.element.offsetTop - this.currentTop() - this.originalTop;
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if((!this.options.constraint) || (this.options.constraint=='horizontal'))
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style.left = ((event.clientX - this.originalX) - this.offsetX) + "px";
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if((!this.options.constraint) || (this.options.constraint=='vertical'))
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style.top = ((event.clientY - this.originalY) - this.offsetY) + "px";
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if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
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},
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update: function(event) {
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if(this.active) {
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if(!this.dragging) {
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var style = this.element.style;
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this.dragging = true;
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if(style.position=="") style.position = "relative";
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style.zIndex = this.options.zindex;
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Draggables.notify('onStart', this);
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if(this.options.starteffect) this.options.starteffect(this.element);
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}
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Droppables.show(event, this.element);
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this.draw(event);
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if(this.options.change) this.options.change(this);
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// fix AppleWebKit rendering
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if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
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Event.stop(event);
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}
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}
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}
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/*--------------------------------------------------------------------------*/
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SortableObserver = Class.create();
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SortableObserver.prototype = {
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initialize: function(element, observer) {
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this.element = $(element);
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this.observer = observer;
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this.lastValue = Sortable.serialize(this.element);
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},
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onStart: function() {
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this.lastValue = Sortable.serialize(this.element);
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},
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onEnd: function() {
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if(this.lastValue != Sortable.serialize(this.element))
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this.observer(this.element)
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}
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}
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Sortable = {
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sortables: new Array(),
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options: function(element){
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var element = $(element);
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for(var i=0;i<this.sortables.length;i++)
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if(this.sortables[i].element == element)
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return this.sortables[i];
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return null;
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},
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destroy: function(element){
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var element = $(element);
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for(var i=0;i<this.sortables.length;i++) {
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if(this.sortables[i].element == element) {
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var s = this.sortables[i];
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Draggables.removeObserver(s.element);
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for(var j=0;j<s.droppables.length;j++)
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Droppables.remove(s.droppables[j]);
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for(var j=0;j<s.draggables.length;j++)
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s.draggables[j].destroy();
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this.sortables.splice(i,1);
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}
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}
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},
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create: function(element) {
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var element = $(element);
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var options = Object.extend({
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element: element,
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tag: 'li', // assumes li children, override with tag: 'tagname'
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overlap: 'vertical', // one of 'vertical', 'horizontal'
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constraint: 'vertical', // one of 'vertical', 'horizontal', false
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containment: element, // also takes array of elements (or id's); or false
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handle: false, // or a CSS class
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only: false,
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hoverclass: null,
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onChange: function() {},
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onUpdate: function() {}
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}, arguments[1] || {});
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// clear any old sortable with same element
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this.destroy(element);
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// build options for the draggables
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var options_for_draggable = {
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revert: true,
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constraint: options.constraint,
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handle: handle };
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if(options.starteffect)
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options_for_draggable.starteffect = options.starteffect;
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if(options.reverteffect)
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options_for_draggable.reverteffect = options.reverteffect;
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if(options.endeffect)
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options_for_draggable.endeffect = options.endeffect;
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if(options.zindex)
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options_for_draggable.zindex = options.zindex;
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// build options for the droppables
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var options_for_droppable = {
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overlap: options.overlap,
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containment: options.containment,
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hoverclass: options.hoverclass,
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onHover: function(element, dropon, overlap) {
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if(overlap>0.5) {
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if(dropon.previousSibling != element) {
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var oldParentNode = element.parentNode;
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element.style.visibility = "hidden"; // fix gecko rendering
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dropon.parentNode.insertBefore(element, dropon);
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if(dropon.parentNode!=oldParentNode && oldParentNode.sortable)
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oldParentNode.sortable.onChange(element);
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if(dropon.parentNode.sortable)
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dropon.parentNode.sortable.onChange(element);
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}
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} else {
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var nextElement = dropon.nextSibling || null;
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if(nextElement != element) {
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var oldParentNode = element.parentNode;
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element.style.visibility = "hidden"; // fix gecko rendering
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dropon.parentNode.insertBefore(element, nextElement);
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if(dropon.parentNode!=oldParentNode && oldParentNode.sortable)
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oldParentNode.sortable.onChange(element);
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if(dropon.parentNode.sortable)
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dropon.parentNode.sortable.onChange(element);
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}
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}
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}
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}
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// fix for gecko engine
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Element.cleanWhitespace(element);
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options.draggables = [];
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options.droppables = [];
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// make it so
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var elements = element.childNodes;
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for (var i = 0; i < elements.length; i++)
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if(elements[i].tagName && elements[i].tagName==options.tag.toUpperCase() &&
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(!options.only || (Element.Class.has(elements[i], options.only)))) {
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// handles are per-draggable
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var handle = options.handle ?
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Element.Class.childrenWith(elements[i], options.handle)[0] : elements[i];
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options.draggables.push(new Draggable(elements[i], Object.extend(options_for_draggable, { handle: handle })));
|
|
|
|
Droppables.add(elements[i], options_for_droppable);
|
|
options.droppables.push(elements[i]);
|
|
|
|
}
|
|
|
|
// keep reference
|
|
this.sortables.push(options);
|
|
|
|
// for onupdate
|
|
Draggables.addObserver(new SortableObserver(element, options.onUpdate));
|
|
|
|
},
|
|
serialize: function(element) {
|
|
var element = $(element);
|
|
var sortableOptions = this.options(element);
|
|
var options = Object.extend({
|
|
tag: sortableOptions.tag,
|
|
only: sortableOptions.only,
|
|
name: element.id
|
|
}, 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("&");
|
|
}
|
|
}
|