1038 lines
27 KiB
JavaScript
1038 lines
27 KiB
JavaScript
/* Prototype JavaScript framework, version 1.3.1
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* (c) 2005 Sam Stephenson <sam@conio.net>
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*
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* THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
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* against the source tree, available from the Prototype darcs repository.
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*
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* Prototype is freely distributable under the terms of an MIT-style license.
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*
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* For details, see the Prototype web site: http://prototype.conio.net/
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*
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/*--------------------------------------------------------------------------*/
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var Prototype = {
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Version: '1.3.1',
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emptyFunction: function() {}
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}
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var Class = {
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create: function() {
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return function() {
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this.initialize.apply(this, arguments);
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}
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}
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}
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var Abstract = new Object();
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Object.extend = function(destination, source) {
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for (property in source) {
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destination[property] = source[property];
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}
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return destination;
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}
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Object.prototype.extend = function(object) {
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return Object.extend.apply(this, [this, object]);
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}
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Function.prototype.bind = function(object) {
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var __method = this;
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return function() {
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__method.apply(object, arguments);
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}
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}
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Function.prototype.bindAsEventListener = function(object) {
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var __method = this;
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return function(event) {
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__method.call(object, event || window.event);
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}
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}
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Number.prototype.toColorPart = function() {
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var digits = this.toString(16);
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if (this < 16) return '0' + digits;
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return digits;
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}
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var Try = {
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these: function() {
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var returnValue;
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for (var i = 0; i < arguments.length; i++) {
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var lambda = arguments[i];
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try {
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returnValue = lambda();
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break;
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} catch (e) {}
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}
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return returnValue;
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}
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}
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/*--------------------------------------------------------------------------*/
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var PeriodicalExecuter = Class.create();
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PeriodicalExecuter.prototype = {
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initialize: function(callback, frequency) {
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this.callback = callback;
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this.frequency = frequency;
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this.currentlyExecuting = false;
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this.registerCallback();
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},
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registerCallback: function() {
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setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
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},
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onTimerEvent: function() {
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if (!this.currentlyExecuting) {
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try {
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this.currentlyExecuting = true;
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this.callback();
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} finally {
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this.currentlyExecuting = false;
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}
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}
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}
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}
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/*--------------------------------------------------------------------------*/
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function $() {
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var elements = new Array();
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for (var i = 0; i < arguments.length; i++) {
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var element = arguments[i];
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if (typeof element == 'string')
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element = document.getElementById(element);
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if (arguments.length == 1)
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return element;
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elements.push(element);
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}
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return elements;
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}
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if (!Array.prototype.push) {
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Array.prototype.push = function() {
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var startLength = this.length;
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for (var i = 0; i < arguments.length; i++)
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this[startLength + i] = arguments[i];
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return this.length;
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}
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}
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if (!Function.prototype.apply) {
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// Based on code from http://www.youngpup.net/
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Function.prototype.apply = function(object, parameters) {
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var parameterStrings = new Array();
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if (!object) object = window;
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if (!parameters) parameters = new Array();
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for (var i = 0; i < parameters.length; i++)
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parameterStrings[i] = 'parameters[' + i + ']';
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object.__apply__ = this;
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var result = eval('object.__apply__(' +
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parameterStrings[i].join(', ') + ')');
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object.__apply__ = null;
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return result;
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}
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}
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String.prototype.extend({
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stripTags: function() {
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return this.replace(/<\/?[^>]+>/gi, '');
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},
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escapeHTML: function() {
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var div = document.createElement('div');
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var text = document.createTextNode(this);
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div.appendChild(text);
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return div.innerHTML;
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},
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unescapeHTML: function() {
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var div = document.createElement('div');
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div.innerHTML = this.stripTags();
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return div.childNodes[0].nodeValue;
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}
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});
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var Ajax = {
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getTransport: function() {
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return Try.these(
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function() {return new ActiveXObject('Msxml2.XMLHTTP')},
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function() {return new ActiveXObject('Microsoft.XMLHTTP')},
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function() {return new XMLHttpRequest()}
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) || false;
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}
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}
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Ajax.Base = function() {};
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Ajax.Base.prototype = {
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setOptions: function(options) {
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this.options = {
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method: 'post',
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asynchronous: true,
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parameters: ''
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}.extend(options || {});
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},
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responseIsSuccess: function() {
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return this.transport.status == undefined
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|| this.transport.status == 0
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|| (this.transport.status >= 200 && this.transport.status < 300);
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},
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responseIsFailure: function() {
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return !this.responseIsSuccess();
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}
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}
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Ajax.Request = Class.create();
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Ajax.Request.Events =
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['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
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Ajax.Request.prototype = (new Ajax.Base()).extend({
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initialize: function(url, options) {
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this.transport = Ajax.getTransport();
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this.setOptions(options);
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this.request(url);
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},
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request: function(url) {
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var parameters = this.options.parameters || '';
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if (parameters.length > 0) parameters += '&_=';
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try {
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if (this.options.method == 'get')
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url += '?' + parameters;
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this.transport.open(this.options.method, url,
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this.options.asynchronous);
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if (this.options.asynchronous) {
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this.transport.onreadystatechange = this.onStateChange.bind(this);
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setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
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}
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this.setRequestHeaders();
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var body = this.options.postBody ? this.options.postBody : parameters;
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this.transport.send(this.options.method == 'post' ? body : null);
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} catch (e) {
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}
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},
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setRequestHeaders: function() {
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var requestHeaders =
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['X-Requested-With', 'XMLHttpRequest',
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'X-Prototype-Version', Prototype.Version];
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if (this.options.method == 'post') {
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requestHeaders.push('Content-type',
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'application/x-www-form-urlencoded');
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/* Force "Connection: close" for Mozilla browsers to work around
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* a bug where XMLHttpReqeuest sends an incorrect Content-length
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* header. See Mozilla Bugzilla #246651.
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*/
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if (this.transport.overrideMimeType)
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requestHeaders.push('Connection', 'close');
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}
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if (this.options.requestHeaders)
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requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
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for (var i = 0; i < requestHeaders.length; i += 2)
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this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
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},
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onStateChange: function() {
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var readyState = this.transport.readyState;
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if (readyState != 1)
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this.respondToReadyState(this.transport.readyState);
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},
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respondToReadyState: function(readyState) {
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var event = Ajax.Request.Events[readyState];
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if (event == 'Complete')
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(this.options['on' + this.transport.status]
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|| this.options['on' + this.responseIsSuccess() ? 'Success' : 'Failure']
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|| Prototype.emptyFunction)(this.transport);
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(this.options['on' + event] || Prototype.emptyFunction)(this.transport);
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/* Avoid memory leak in MSIE: clean up the oncomplete event handler */
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if (event == 'Complete')
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this.transport.onreadystatechange = Prototype.emptyFunction;
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}
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});
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Ajax.Updater = Class.create();
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Ajax.Updater.ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:<\/script>)';
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Ajax.Updater.prototype.extend(Ajax.Request.prototype).extend({
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initialize: function(container, url, options) {
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this.containers = {
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success: container.success ? $(container.success) : $(container),
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failure: container.failure ? $(container.failure) :
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(container.success ? null : $(container))
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}
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this.transport = Ajax.getTransport();
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this.setOptions(options);
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var onComplete = this.options.onComplete || Prototype.emptyFunction;
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this.options.onComplete = (function() {
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this.updateContent();
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onComplete(this.transport);
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}).bind(this);
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this.request(url);
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},
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updateContent: function() {
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var receiver = this.responseIsSuccess() ?
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this.containers.success : this.containers.failure;
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var match = new RegExp(Ajax.Updater.ScriptFragment, 'img');
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var response = this.transport.responseText.replace(match, '');
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var scripts = this.transport.responseText.match(match);
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if (receiver) {
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if (this.options.insertion) {
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new this.options.insertion(receiver, response);
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} else {
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receiver.innerHTML = response;
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}
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}
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if (this.responseIsSuccess()) {
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if (this.onComplete)
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setTimeout((function() {this.onComplete(
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this.transport)}).bind(this), 10);
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}
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if (this.options.evalScripts && scripts) {
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match = new RegExp(Ajax.Updater.ScriptFragment, 'im');
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setTimeout((function() {
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for (var i = 0; i < scripts.length; i++)
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eval(scripts[i].match(match)[1]);
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}).bind(this), 10);
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}
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}
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});
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Ajax.PeriodicalUpdater = Class.create();
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Ajax.PeriodicalUpdater.prototype = (new Ajax.Base()).extend({
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initialize: function(container, url, options) {
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this.setOptions(options);
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this.onComplete = this.options.onComplete;
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this.frequency = (this.options.frequency || 2);
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this.decay = 1;
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this.updater = {};
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this.container = container;
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this.url = url;
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this.start();
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},
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start: function() {
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this.options.onComplete = this.updateComplete.bind(this);
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this.onTimerEvent();
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},
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stop: function() {
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this.updater.onComplete = undefined;
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clearTimeout(this.timer);
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(this.onComplete || Ajax.emptyFunction).apply(this, arguments);
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},
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updateComplete: function(request) {
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if (this.options.decay) {
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this.decay = (request.responseText == this.lastText ?
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this.decay * this.options.decay : 1);
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this.lastText = request.responseText;
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}
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this.timer = setTimeout(this.onTimerEvent.bind(this),
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this.decay * this.frequency * 1000);
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},
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onTimerEvent: function() {
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this.updater = new Ajax.Updater(this.container, this.url, this.options);
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}
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});
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document.getElementsByClassName = function(className) {
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var children = document.getElementsByTagName('*') || document.all;
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var elements = new Array();
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for (var i = 0; i < children.length; i++) {
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var child = children[i];
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var classNames = child.className.split(' ');
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for (var j = 0; j < classNames.length; j++) {
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if (classNames[j] == className) {
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elements.push(child);
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break;
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}
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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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if (!window.Element) {
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var Element = new Object();
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}
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Object.extend(Element, {
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toggle: function() {
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for (var i = 0; i < arguments.length; i++) {
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var element = $(arguments[i]);
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element.style.display =
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(element.style.display == 'none' ? '' : 'none');
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}
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},
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hide: function() {
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for (var i = 0; i < arguments.length; i++) {
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var element = $(arguments[i]);
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element.style.display = 'none';
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}
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},
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show: function() {
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for (var i = 0; i < arguments.length; i++) {
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var element = $(arguments[i]);
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element.style.display = '';
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}
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},
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remove: function(element) {
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element = $(element);
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element.parentNode.removeChild(element);
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},
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getHeight: function(element) {
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element = $(element);
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return element.offsetHeight;
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},
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hasClassName: function(element, className) {
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element = $(element);
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if (!element)
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return;
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var a = element.className.split(' ');
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for (var i = 0; i < a.length; i++) {
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if (a[i] == className)
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return true;
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}
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return false;
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},
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addClassName: function(element, className) {
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element = $(element);
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Element.removeClassName(element, className);
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element.className += ' ' + className;
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},
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removeClassName: function(element, className) {
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element = $(element);
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if (!element)
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return;
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var newClassName = '';
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var a = element.className.split(' ');
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for (var i = 0; i < a.length; i++) {
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if (a[i] != className) {
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if (i > 0)
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newClassName += ' ';
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newClassName += a[i];
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}
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}
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element.className = newClassName;
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},
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// removes whitespace-only text node children
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cleanWhitespace: function(element) {
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var element = $(element);
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for (var i = 0; i < element.childNodes.length; i++) {
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var node = element.childNodes[i];
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if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
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Element.remove(node);
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}
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}
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});
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var Toggle = new Object();
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Toggle.display = Element.toggle;
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/*--------------------------------------------------------------------------*/
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Abstract.Insertion = function(adjacency) {
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this.adjacency = adjacency;
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}
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Abstract.Insertion.prototype = {
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initialize: function(element, content) {
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this.element = $(element);
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this.content = content;
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if (this.adjacency && this.element.insertAdjacentHTML) {
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this.element.insertAdjacentHTML(this.adjacency, this.content);
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} else {
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this.range = this.element.ownerDocument.createRange();
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if (this.initializeRange) this.initializeRange();
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this.fragment = this.range.createContextualFragment(this.content);
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this.insertContent();
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}
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}
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}
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var Insertion = new Object();
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Insertion.Before = Class.create();
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Insertion.Before.prototype = (new Abstract.Insertion('beforeBegin')).extend({
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initializeRange: function() {
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this.range.setStartBefore(this.element);
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},
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insertContent: function() {
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this.element.parentNode.insertBefore(this.fragment, this.element);
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}
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});
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Insertion.Top = Class.create();
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Insertion.Top.prototype = (new Abstract.Insertion('afterBegin')).extend({
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initializeRange: function() {
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this.range.selectNodeContents(this.element);
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this.range.collapse(true);
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},
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insertContent: function() {
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this.element.insertBefore(this.fragment, this.element.firstChild);
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}
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});
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Insertion.Bottom = Class.create();
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Insertion.Bottom.prototype = (new Abstract.Insertion('beforeEnd')).extend({
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initializeRange: function() {
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this.range.selectNodeContents(this.element);
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this.range.collapse(this.element);
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},
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insertContent: function() {
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this.element.appendChild(this.fragment);
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}
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});
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Insertion.After = Class.create();
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Insertion.After.prototype = (new Abstract.Insertion('afterEnd')).extend({
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initializeRange: function() {
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this.range.setStartAfter(this.element);
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},
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insertContent: function() {
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this.element.parentNode.insertBefore(this.fragment,
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this.element.nextSibling);
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}
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});
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var Field = {
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clear: function() {
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for (var i = 0; i < arguments.length; i++)
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$(arguments[i]).value = '';
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},
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focus: function(element) {
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$(element).focus();
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},
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present: function() {
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for (var i = 0; i < arguments.length; i++)
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if ($(arguments[i]).value == '') return false;
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return true;
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},
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select: function(element) {
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$(element).select();
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},
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activate: function(element) {
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$(element).focus();
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$(element).select();
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}
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}
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/*--------------------------------------------------------------------------*/
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|
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var Form = {
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serialize: function(form) {
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var elements = Form.getElements($(form));
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var queryComponents = new Array();
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|
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for (var i = 0; i < elements.length; i++) {
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var queryComponent = Form.Element.serialize(elements[i]);
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|
if (queryComponent)
|
|
queryComponents.push(queryComponent);
|
|
}
|
|
|
|
return queryComponents.join('&');
|
|
},
|
|
|
|
getElements: function(form) {
|
|
var form = $(form);
|
|
var elements = new Array();
|
|
|
|
for (tagName in Form.Element.Serializers) {
|
|
var tagElements = form.getElementsByTagName(tagName);
|
|
for (var j = 0; j < tagElements.length; j++)
|
|
elements.push(tagElements[j]);
|
|
}
|
|
return elements;
|
|
},
|
|
|
|
getInputs: function(form, typeName, name) {
|
|
var form = $(form);
|
|
var inputs = form.getElementsByTagName('input');
|
|
|
|
if (!typeName && !name)
|
|
return inputs;
|
|
|
|
var matchingInputs = new Array();
|
|
for (var i = 0; i < inputs.length; i++) {
|
|
var input = inputs[i];
|
|
if ((typeName && input.type != typeName) ||
|
|
(name && input.name != name))
|
|
continue;
|
|
matchingInputs.push(input);
|
|
}
|
|
|
|
return matchingInputs;
|
|
},
|
|
|
|
disable: function(form) {
|
|
var elements = Form.getElements(form);
|
|
for (var i = 0; i < elements.length; i++) {
|
|
var element = elements[i];
|
|
element.blur();
|
|
element.disabled = 'true';
|
|
}
|
|
},
|
|
|
|
enable: function(form) {
|
|
var elements = Form.getElements(form);
|
|
for (var i = 0; i < elements.length; i++) {
|
|
var element = elements[i];
|
|
element.disabled = '';
|
|
}
|
|
},
|
|
|
|
focusFirstElement: function(form) {
|
|
var form = $(form);
|
|
var elements = Form.getElements(form);
|
|
for (var i = 0; i < elements.length; i++) {
|
|
var element = elements[i];
|
|
if (element.type != 'hidden' && !element.disabled) {
|
|
Field.activate(element);
|
|
break;
|
|
}
|
|
}
|
|
},
|
|
|
|
reset: function(form) {
|
|
$(form).reset();
|
|
}
|
|
}
|
|
|
|
Form.Element = {
|
|
serialize: function(element) {
|
|
var element = $(element);
|
|
var method = element.tagName.toLowerCase();
|
|
var parameter = Form.Element.Serializers[method](element);
|
|
|
|
if (parameter)
|
|
return encodeURIComponent(parameter[0]) + '=' +
|
|
encodeURIComponent(parameter[1]);
|
|
},
|
|
|
|
getValue: function(element) {
|
|
var element = $(element);
|
|
var method = element.tagName.toLowerCase();
|
|
var parameter = Form.Element.Serializers[method](element);
|
|
|
|
if (parameter)
|
|
return parameter[1];
|
|
}
|
|
}
|
|
|
|
Form.Element.Serializers = {
|
|
input: function(element) {
|
|
switch (element.type.toLowerCase()) {
|
|
case 'submit':
|
|
case 'hidden':
|
|
case 'password':
|
|
case 'text':
|
|
return Form.Element.Serializers.textarea(element);
|
|
case 'checkbox':
|
|
case 'radio':
|
|
return Form.Element.Serializers.inputSelector(element);
|
|
}
|
|
return false;
|
|
},
|
|
|
|
inputSelector: function(element) {
|
|
if (element.checked)
|
|
return [element.name, element.value];
|
|
},
|
|
|
|
textarea: function(element) {
|
|
return [element.name, element.value];
|
|
},
|
|
|
|
select: function(element) {
|
|
var value = '';
|
|
if (element.type == 'select-one') {
|
|
var index = element.selectedIndex;
|
|
if (index >= 0)
|
|
value = element.options[index].value || element.options[index].text;
|
|
} else {
|
|
value = new Array();
|
|
for (var i = 0; i < element.length; i++) {
|
|
var opt = element.options[i];
|
|
if (opt.selected)
|
|
value.push(opt.value || opt.text);
|
|
}
|
|
}
|
|
return [element.name, value];
|
|
}
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
var $F = Form.Element.getValue;
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
Abstract.TimedObserver = function() {}
|
|
Abstract.TimedObserver.prototype = {
|
|
initialize: function(element, frequency, callback) {
|
|
this.frequency = frequency;
|
|
this.element = $(element);
|
|
this.callback = callback;
|
|
|
|
this.lastValue = this.getValue();
|
|
this.registerCallback();
|
|
},
|
|
|
|
registerCallback: function() {
|
|
setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
|
|
},
|
|
|
|
onTimerEvent: function() {
|
|
var value = this.getValue();
|
|
if (this.lastValue != value) {
|
|
this.callback(this.element, value);
|
|
this.lastValue = value;
|
|
}
|
|
}
|
|
}
|
|
|
|
Form.Element.Observer = Class.create();
|
|
Form.Element.Observer.prototype = (new Abstract.TimedObserver()).extend({
|
|
getValue: function() {
|
|
return Form.Element.getValue(this.element);
|
|
}
|
|
});
|
|
|
|
Form.Observer = Class.create();
|
|
Form.Observer.prototype = (new Abstract.TimedObserver()).extend({
|
|
getValue: function() {
|
|
return Form.serialize(this.element);
|
|
}
|
|
});
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
Abstract.EventObserver = function() {}
|
|
Abstract.EventObserver.prototype = {
|
|
initialize: function(element, callback) {
|
|
this.element = $(element);
|
|
this.callback = callback;
|
|
|
|
this.lastValue = this.getValue();
|
|
if (this.element.tagName.toLowerCase() == 'form')
|
|
this.registerFormCallbacks();
|
|
else
|
|
this.registerCallback(this.element);
|
|
},
|
|
|
|
onElementEvent: function() {
|
|
var value = this.getValue();
|
|
if (this.lastValue != value) {
|
|
this.callback(this.element, value);
|
|
this.lastValue = value;
|
|
}
|
|
},
|
|
|
|
registerFormCallbacks: function() {
|
|
var elements = Form.getElements(this.element);
|
|
for (var i = 0; i < elements.length; i++)
|
|
this.registerCallback(elements[i]);
|
|
},
|
|
|
|
registerCallback: function(element) {
|
|
if (element.type) {
|
|
switch (element.type.toLowerCase()) {
|
|
case 'checkbox':
|
|
case 'radio':
|
|
element.target = this;
|
|
element.prev_onclick = element.onclick || Prototype.emptyFunction;
|
|
element.onclick = function() {
|
|
this.prev_onclick();
|
|
this.target.onElementEvent();
|
|
}
|
|
break;
|
|
case 'password':
|
|
case 'text':
|
|
case 'textarea':
|
|
case 'select-one':
|
|
case 'select-multiple':
|
|
element.target = this;
|
|
element.prev_onchange = element.onchange || Prototype.emptyFunction;
|
|
element.onchange = function() {
|
|
this.prev_onchange();
|
|
this.target.onElementEvent();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Form.Element.EventObserver = Class.create();
|
|
Form.Element.EventObserver.prototype = (new Abstract.EventObserver()).extend({
|
|
getValue: function() {
|
|
return Form.Element.getValue(this.element);
|
|
}
|
|
});
|
|
|
|
Form.EventObserver = Class.create();
|
|
Form.EventObserver.prototype = (new Abstract.EventObserver()).extend({
|
|
getValue: function() {
|
|
return Form.serialize(this.element);
|
|
}
|
|
});
|
|
|
|
|
|
if (!window.Event) {
|
|
var Event = new Object();
|
|
}
|
|
|
|
Object.extend(Event, {
|
|
KEY_BACKSPACE: 8,
|
|
KEY_TAB: 9,
|
|
KEY_RETURN: 13,
|
|
KEY_ESC: 27,
|
|
KEY_LEFT: 37,
|
|
KEY_UP: 38,
|
|
KEY_RIGHT: 39,
|
|
KEY_DOWN: 40,
|
|
KEY_DELETE: 46,
|
|
|
|
element: function(event) {
|
|
return event.target || event.srcElement;
|
|
},
|
|
|
|
isLeftClick: function(event) {
|
|
return (((event.which) && (event.which == 1)) ||
|
|
((event.button) && (event.button == 1)));
|
|
},
|
|
|
|
pointerX: function(event) {
|
|
return event.pageX || (event.clientX +
|
|
(document.documentElement.scrollLeft || document.body.scrollLeft));
|
|
},
|
|
|
|
pointerY: function(event) {
|
|
return event.pageY || (event.clientY +
|
|
(document.documentElement.scrollTop || document.body.scrollTop));
|
|
},
|
|
|
|
stop: function(event) {
|
|
if (event.preventDefault) {
|
|
event.preventDefault();
|
|
event.stopPropagation();
|
|
} else {
|
|
event.returnValue = false;
|
|
}
|
|
},
|
|
|
|
// find the first node with the given tagName, starting from the
|
|
// node the event was triggered on; traverses the DOM upwards
|
|
findElement: function(event, tagName) {
|
|
var element = Event.element(event);
|
|
while (element.parentNode && (!element.tagName ||
|
|
(element.tagName.toUpperCase() != tagName.toUpperCase())))
|
|
element = element.parentNode;
|
|
return element;
|
|
},
|
|
|
|
observers: false,
|
|
|
|
_observeAndCache: function(element, name, observer, useCapture) {
|
|
if (!this.observers) this.observers = [];
|
|
if (element.addEventListener) {
|
|
this.observers.push([element, name, observer, useCapture]);
|
|
element.addEventListener(name, observer, useCapture);
|
|
} else if (element.attachEvent) {
|
|
this.observers.push([element, name, observer, useCapture]);
|
|
element.attachEvent('on' + name, observer);
|
|
}
|
|
},
|
|
|
|
unloadCache: function() {
|
|
if (!Event.observers) return;
|
|
for (var i = 0; i < Event.observers.length; i++) {
|
|
Event.stopObserving.apply(this, Event.observers[i]);
|
|
Event.observers[i][0] = null;
|
|
}
|
|
Event.observers = false;
|
|
},
|
|
|
|
observe: function(element, name, observer, useCapture) {
|
|
var element = $(element);
|
|
useCapture = useCapture || false;
|
|
|
|
if (name == 'keypress' &&
|
|
((navigator.appVersion.indexOf('AppleWebKit') > 0)
|
|
|| element.attachEvent))
|
|
name = 'keydown';
|
|
|
|
this._observeAndCache(element, name, observer, useCapture);
|
|
},
|
|
|
|
stopObserving: function(element, name, observer, useCapture) {
|
|
var element = $(element);
|
|
useCapture = useCapture || false;
|
|
|
|
if (name == 'keypress' &&
|
|
((navigator.appVersion.indexOf('AppleWebKit') > 0)
|
|
|| element.detachEvent))
|
|
name = 'keydown';
|
|
|
|
if (element.removeEventListener) {
|
|
element.removeEventListener(name, observer, useCapture);
|
|
} else if (element.detachEvent) {
|
|
element.detachEvent('on' + name, observer);
|
|
}
|
|
}
|
|
});
|
|
|
|
/* prevent memory leaks in IE */
|
|
Event.observe(window, 'unload', Event.unloadCache, false);
|
|
|
|
var Position = {
|
|
|
|
// set to true if needed, warning: firefox performance problems
|
|
// NOT neeeded for page scrolling, only if draggable contained in
|
|
// scrollable elements
|
|
includeScrollOffsets: false,
|
|
|
|
// must be called before calling withinIncludingScrolloffset, every time the
|
|
// page is scrolled
|
|
prepare: function() {
|
|
this.deltaX = window.pageXOffset
|
|
|| document.documentElement.scrollLeft
|
|
|| document.body.scrollLeft
|
|
|| 0;
|
|
this.deltaY = window.pageYOffset
|
|
|| document.documentElement.scrollTop
|
|
|| document.body.scrollTop
|
|
|| 0;
|
|
},
|
|
|
|
realOffset: function(element) {
|
|
var valueT = 0, valueL = 0;
|
|
do {
|
|
valueT += element.scrollTop || 0;
|
|
valueL += element.scrollLeft || 0;
|
|
element = element.parentNode;
|
|
} while (element);
|
|
return [valueL, valueT];
|
|
},
|
|
|
|
cumulativeOffset: function(element) {
|
|
var valueT = 0, valueL = 0;
|
|
do {
|
|
valueT += element.offsetTop || 0;
|
|
valueL += element.offsetLeft || 0;
|
|
element = element.offsetParent;
|
|
} while (element);
|
|
return [valueL, valueT];
|
|
},
|
|
|
|
// caches x/y coordinate pair to use with overlap
|
|
within: function(element, x, y) {
|
|
if (this.includeScrollOffsets)
|
|
return this.withinIncludingScrolloffsets(element, x, y);
|
|
this.xcomp = x;
|
|
this.ycomp = y;
|
|
this.offset = this.cumulativeOffset(element);
|
|
|
|
return (y >= this.offset[1] &&
|
|
y < this.offset[1] + element.offsetHeight &&
|
|
x >= this.offset[0] &&
|
|
x < this.offset[0] + element.offsetWidth);
|
|
},
|
|
|
|
withinIncludingScrolloffsets: function(element, x, y) {
|
|
var offsetcache = this.realOffset(element);
|
|
|
|
this.xcomp = x + offsetcache[0] - this.deltaX;
|
|
this.ycomp = y + offsetcache[1] - this.deltaY;
|
|
this.offset = this.cumulativeOffset(element);
|
|
|
|
return (this.ycomp >= this.offset[1] &&
|
|
this.ycomp < this.offset[1] + element.offsetHeight &&
|
|
this.xcomp >= this.offset[0] &&
|
|
this.xcomp < this.offset[0] + element.offsetWidth);
|
|
},
|
|
|
|
// within must be called directly before
|
|
overlap: function(mode, element) {
|
|
if (!mode) return 0;
|
|
if (mode == 'vertical')
|
|
return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
|
|
element.offsetHeight;
|
|
if (mode == 'horizontal')
|
|
return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
|
|
element.offsetWidth;
|
|
},
|
|
|
|
clone: function(source, target) {
|
|
source = $(source);
|
|
target = $(target);
|
|
target.style.position = 'absolute';
|
|
var offsets = this.cumulativeOffset(source);
|
|
target.style.top = offsets[1] + 'px';
|
|
target.style.left = offsets[0] + 'px';
|
|
target.style.width = source.offsetWidth + 'px';
|
|
target.style.height = source.offsetHeight + 'px';
|
|
}
|
|
}
|