2006 lines
No EOL
54 KiB
JavaScript
2006 lines
No EOL
54 KiB
JavaScript
/* Prototype JavaScript framework, version 1.5.0_rc0
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* (c) 2005 Sam Stephenson <sam@conio.net>
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*
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* Prototype is freely distributable under the terms of an MIT-style license.
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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: '1.5.0_rc0',
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ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
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emptyFunction: function() {},
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K: function(x) {return x}
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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 (var 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.inspect = function(object) {
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try {
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if (object == undefined) return 'undefined';
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if (object == null) return 'null';
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return object.inspect ? object.inspect() : object.toString();
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} catch (e) {
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if (e instanceof RangeError) return '...';
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throw e;
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}
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}
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Function.prototype.bind = function() {
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var __method = this, args = $A(arguments), object = args.shift();
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return function() {
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return __method.apply(object, args.concat($A(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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return __method.call(object, event || window.event);
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}
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}
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Object.extend(Number.prototype, {
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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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succ: function() {
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return this + 1;
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},
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times: function(iterator) {
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$R(0, this, true).each(iterator);
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return this;
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}
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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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Object.extend(String.prototype, {
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gsub: function(pattern, replacement) {
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var result = '', source = this, match;
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replacement = arguments.callee.prepareReplacement(replacement);
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while (source.length > 0) {
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if (match = source.match(pattern)) {
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result += source.slice(0, match.index);
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result += (replacement(match) || '').toString();
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source = source.slice(match.index + match[0].length);
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} else {
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result += source, source = '';
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}
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}
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return result;
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},
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sub: function(pattern, replacement, count) {
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replacement = this.gsub.prepareReplacement(replacement);
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count = count === undefined ? 1 : count;
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return this.gsub(pattern, function(match) {
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if (--count < 0) return match[0];
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return replacement(match);
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});
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},
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scan: function(pattern, iterator) {
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this.gsub(pattern, iterator);
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return this;
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},
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truncate: function(length, truncation) {
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length = length || 30;
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truncation = truncation === undefined ? '...' : truncation;
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return this.length > length ?
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this.slice(0, length - truncation.length) + truncation : this;
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},
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strip: function() {
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return this.replace(/^\s+/, '').replace(/\s+$/, '');
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},
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stripTags: function() {
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return this.replace(/<\/?[^>]+>/gi, '');
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},
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stripScripts: function() {
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return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
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},
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extractScripts: function() {
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var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
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var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
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return (this.match(matchAll) || []).map(function(scriptTag) {
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return (scriptTag.match(matchOne) || ['', ''])[1];
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});
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},
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evalScripts: function() {
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return this.extractScripts().map(function(script) { return eval(script) });
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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] ? div.childNodes[0].nodeValue : '';
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},
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toQueryParams: function() {
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var pairs = this.match(/^\??(.*)$/)[1].split('&');
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return pairs.inject({}, function(params, pairString) {
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var pair = pairString.split('=');
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params[pair[0]] = pair[1];
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return params;
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});
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},
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toArray: function() {
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return this.split('');
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},
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camelize: function() {
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var oStringList = this.split('-');
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if (oStringList.length == 1) return oStringList[0];
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var camelizedString = this.indexOf('-') == 0
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? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
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: oStringList[0];
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for (var i = 1, len = oStringList.length; i < len; i++) {
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var s = oStringList[i];
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camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
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}
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return camelizedString;
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},
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inspect: function() {
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return "'" + this.replace(/\\/g, '\\\\').replace(/'/g, '\\\'') + "'";
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}
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});
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String.prototype.gsub.prepareReplacement = function(replacement) {
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if (typeof replacement == 'function') return replacement;
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var template = new Template(replacement);
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return function(match) { return template.evaluate(match) };
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}
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String.prototype.parseQuery = String.prototype.toQueryParams;
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var Template = Class.create();
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Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
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Template.prototype = {
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initialize: function(template, pattern) {
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this.template = template.toString();
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this.pattern = pattern || Template.Pattern;
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},
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evaluate: function(object) {
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return this.template.gsub(this.pattern, function(match) {
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var before = match[1];
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if (before == '\\') return match[2];
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return before + (object[match[3]] || '').toString();
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});
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}
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}
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var $break = new Object();
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var $continue = new Object();
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var Enumerable = {
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each: function(iterator) {
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var index = 0;
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try {
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this._each(function(value) {
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try {
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iterator(value, index++);
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} catch (e) {
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if (e != $continue) throw e;
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}
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});
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} catch (e) {
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if (e != $break) throw e;
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}
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},
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all: function(iterator) {
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var result = true;
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this.each(function(value, index) {
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result = result && !!(iterator || Prototype.K)(value, index);
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if (!result) throw $break;
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});
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return result;
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},
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any: function(iterator) {
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var result = true;
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this.each(function(value, index) {
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if (result = !!(iterator || Prototype.K)(value, index))
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throw $break;
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});
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return result;
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},
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collect: function(iterator) {
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var results = [];
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this.each(function(value, index) {
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results.push(iterator(value, index));
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});
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return results;
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},
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detect: function (iterator) {
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var result;
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this.each(function(value, index) {
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if (iterator(value, index)) {
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result = value;
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throw $break;
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}
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});
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return result;
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},
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findAll: function(iterator) {
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var results = [];
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this.each(function(value, index) {
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if (iterator(value, index))
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results.push(value);
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});
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return results;
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},
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grep: function(pattern, iterator) {
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var results = [];
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this.each(function(value, index) {
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var stringValue = value.toString();
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if (stringValue.match(pattern))
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results.push((iterator || Prototype.K)(value, index));
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})
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return results;
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},
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include: function(object) {
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var found = false;
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this.each(function(value) {
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if (value == object) {
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found = true;
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throw $break;
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}
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});
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return found;
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},
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inject: function(memo, iterator) {
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this.each(function(value, index) {
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memo = iterator(memo, value, index);
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});
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return memo;
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},
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invoke: function(method) {
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var args = $A(arguments).slice(1);
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return this.collect(function(value) {
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return value[method].apply(value, args);
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});
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},
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max: function(iterator) {
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var result;
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this.each(function(value, index) {
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value = (iterator || Prototype.K)(value, index);
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if (result == undefined || value >= result)
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result = value;
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});
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return result;
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},
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min: function(iterator) {
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var result;
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this.each(function(value, index) {
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value = (iterator || Prototype.K)(value, index);
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if (result == undefined || value < result)
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result = value;
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});
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return result;
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},
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partition: function(iterator) {
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var trues = [], falses = [];
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this.each(function(value, index) {
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((iterator || Prototype.K)(value, index) ?
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trues : falses).push(value);
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});
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return [trues, falses];
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},
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pluck: function(property) {
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var results = [];
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this.each(function(value, index) {
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results.push(value[property]);
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});
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return results;
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},
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reject: function(iterator) {
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var results = [];
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this.each(function(value, index) {
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if (!iterator(value, index))
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results.push(value);
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});
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return results;
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},
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sortBy: function(iterator) {
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return this.collect(function(value, index) {
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return {value: value, criteria: iterator(value, index)};
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}).sort(function(left, right) {
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var a = left.criteria, b = right.criteria;
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return a < b ? -1 : a > b ? 1 : 0;
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}).pluck('value');
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},
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toArray: function() {
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return this.collect(Prototype.K);
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},
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zip: function() {
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var iterator = Prototype.K, args = $A(arguments);
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if (typeof args.last() == 'function')
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iterator = args.pop();
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var collections = [this].concat(args).map($A);
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return this.map(function(value, index) {
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return iterator(collections.pluck(index));
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});
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},
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inspect: function() {
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return '#<Enumerable:' + this.toArray().inspect() + '>';
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}
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}
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Object.extend(Enumerable, {
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map: Enumerable.collect,
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find: Enumerable.detect,
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select: Enumerable.findAll,
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member: Enumerable.include,
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entries: Enumerable.toArray
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});
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var $A = Array.from = function(iterable) {
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if (!iterable) return [];
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if (iterable.toArray) {
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return iterable.toArray();
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} else {
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var results = [];
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for (var i = 0; i < iterable.length; i++)
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results.push(iterable[i]);
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return results;
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}
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}
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Object.extend(Array.prototype, Enumerable);
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if (!Array.prototype._reverse)
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Array.prototype._reverse = Array.prototype.reverse;
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Object.extend(Array.prototype, {
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_each: function(iterator) {
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for (var i = 0; i < this.length; i++)
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iterator(this[i]);
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},
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clear: function() {
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this.length = 0;
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return this;
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},
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first: function() {
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return this[0];
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},
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last: function() {
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return this[this.length - 1];
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},
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compact: function() {
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return this.select(function(value) {
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return value != undefined || value != null;
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});
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},
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flatten: function() {
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return this.inject([], function(array, value) {
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return array.concat(value && value.constructor == Array ?
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value.flatten() : [value]);
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});
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},
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without: function() {
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var values = $A(arguments);
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return this.select(function(value) {
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return !values.include(value);
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});
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},
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indexOf: function(object) {
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for (var i = 0; i < this.length; i++)
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if (this[i] == object) return i;
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return -1;
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},
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reverse: function(inline) {
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return (inline !== false ? this : this.toArray())._reverse();
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},
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inspect: function() {
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return '[' + this.map(Object.inspect).join(', ') + ']';
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}
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});
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var Hash = {
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_each: function(iterator) {
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for (var key in this) {
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var value = this[key];
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if (typeof value == 'function') continue;
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var pair = [key, value];
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pair.key = key;
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pair.value = value;
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iterator(pair);
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}
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},
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keys: function() {
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return this.pluck('key');
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},
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values: function() {
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return this.pluck('value');
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},
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merge: function(hash) {
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return $H(hash).inject($H(this), function(mergedHash, pair) {
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mergedHash[pair.key] = pair.value;
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return mergedHash;
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});
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},
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toQueryString: function() {
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return this.map(function(pair) {
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return pair.map(encodeURIComponent).join('=');
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}).join('&');
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},
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inspect: function() {
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return '#<Hash:{' + this.map(function(pair) {
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return pair.map(Object.inspect).join(': ');
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}).join(', ') + '}>';
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}
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}
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function $H(object) {
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var hash = Object.extend({}, object || {});
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Object.extend(hash, Enumerable);
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Object.extend(hash, Hash);
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return hash;
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}
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ObjectRange = Class.create();
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Object.extend(ObjectRange.prototype, Enumerable);
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Object.extend(ObjectRange.prototype, {
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initialize: function(start, end, exclusive) {
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this.start = start;
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this.end = end;
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this.exclusive = exclusive;
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},
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_each: function(iterator) {
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var value = this.start;
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do {
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iterator(value);
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value = value.succ();
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} while (this.include(value));
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},
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include: function(value) {
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if (value < this.start)
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return false;
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if (this.exclusive)
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return value < this.end;
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return value <= this.end;
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}
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});
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var $R = function(start, end, exclusive) {
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return new ObjectRange(start, end, exclusive);
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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 XMLHttpRequest()},
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function() {return new ActiveXObject('Msxml2.XMLHTTP')},
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function() {return new ActiveXObject('Microsoft.XMLHTTP')}
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) || false;
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},
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activeRequestCount: 0
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}
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Ajax.Responders = {
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responders: [],
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_each: function(iterator) {
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this.responders._each(iterator);
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},
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register: function(responderToAdd) {
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if (!this.include(responderToAdd))
|
|
this.responders.push(responderToAdd);
|
|
},
|
|
|
|
unregister: function(responderToRemove) {
|
|
this.responders = this.responders.without(responderToRemove);
|
|
},
|
|
|
|
dispatch: function(callback, request, transport, json) {
|
|
this.each(function(responder) {
|
|
if (responder[callback] && typeof responder[callback] == 'function') {
|
|
try {
|
|
responder[callback].apply(responder, [request, transport, json]);
|
|
} catch (e) {}
|
|
}
|
|
});
|
|
}
|
|
};
|
|
|
|
Object.extend(Ajax.Responders, Enumerable);
|
|
|
|
Ajax.Responders.register({
|
|
onCreate: function() {
|
|
Ajax.activeRequestCount++;
|
|
},
|
|
|
|
onComplete: function() {
|
|
Ajax.activeRequestCount--;
|
|
}
|
|
});
|
|
|
|
Ajax.Base = function() {};
|
|
Ajax.Base.prototype = {
|
|
setOptions: function(options) {
|
|
this.options = {
|
|
method: 'post',
|
|
asynchronous: true,
|
|
contentType: 'application/x-www-form-urlencoded',
|
|
parameters: ''
|
|
}
|
|
Object.extend(this.options, options || {});
|
|
},
|
|
|
|
responseIsSuccess: function() {
|
|
return this.transport.status == undefined
|
|
|| this.transport.status == 0
|
|
|| (this.transport.status >= 200 && this.transport.status < 300);
|
|
},
|
|
|
|
responseIsFailure: function() {
|
|
return !this.responseIsSuccess();
|
|
}
|
|
}
|
|
|
|
Ajax.Request = Class.create();
|
|
Ajax.Request.Events =
|
|
['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
|
|
|
|
Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
|
|
initialize: function(url, options) {
|
|
this.transport = Ajax.getTransport();
|
|
this.setOptions(options);
|
|
this.request(url);
|
|
},
|
|
|
|
request: function(url) {
|
|
var parameters = this.options.parameters || '';
|
|
if (parameters.length > 0) parameters += '&_=';
|
|
|
|
try {
|
|
this.url = url;
|
|
if (this.options.method == 'get' && parameters.length > 0)
|
|
this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;
|
|
|
|
Ajax.Responders.dispatch('onCreate', this, this.transport);
|
|
|
|
this.transport.open(this.options.method, this.url,
|
|
this.options.asynchronous);
|
|
|
|
if (this.options.asynchronous) {
|
|
this.transport.onreadystatechange = this.onStateChange.bind(this);
|
|
setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
|
|
}
|
|
|
|
this.setRequestHeaders();
|
|
|
|
var body = this.options.postBody ? this.options.postBody : parameters;
|
|
this.transport.send(this.options.method == 'post' ? body : null);
|
|
|
|
} catch (e) {
|
|
this.dispatchException(e);
|
|
}
|
|
},
|
|
|
|
setRequestHeaders: function() {
|
|
var requestHeaders =
|
|
['X-Requested-With', 'XMLHttpRequest',
|
|
'X-Prototype-Version', Prototype.Version,
|
|
'Accept', 'text/javascript, text/html, application/xml, text/xml, */*'];
|
|
|
|
if (this.options.method == 'post') {
|
|
requestHeaders.push('Content-type', this.options.contentType);
|
|
|
|
/* Force "Connection: close" for Mozilla browsers to work around
|
|
* a bug where XMLHttpReqeuest sends an incorrect Content-length
|
|
* header. See Mozilla Bugzilla #246651.
|
|
*/
|
|
if (this.transport.overrideMimeType)
|
|
requestHeaders.push('Connection', 'close');
|
|
}
|
|
|
|
if (this.options.requestHeaders)
|
|
requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
|
|
|
|
for (var i = 0; i < requestHeaders.length; i += 2)
|
|
this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
|
|
},
|
|
|
|
onStateChange: function() {
|
|
var readyState = this.transport.readyState;
|
|
if (readyState != 1)
|
|
this.respondToReadyState(this.transport.readyState);
|
|
},
|
|
|
|
header: function(name) {
|
|
try {
|
|
return this.transport.getResponseHeader(name);
|
|
} catch (e) {}
|
|
},
|
|
|
|
evalJSON: function() {
|
|
try {
|
|
return eval('(' + this.header('X-JSON') + ')');
|
|
} catch (e) {}
|
|
},
|
|
|
|
evalResponse: function() {
|
|
try {
|
|
return eval(this.transport.responseText);
|
|
} catch (e) {
|
|
this.dispatchException(e);
|
|
}
|
|
},
|
|
|
|
respondToReadyState: function(readyState) {
|
|
var event = Ajax.Request.Events[readyState];
|
|
var transport = this.transport, json = this.evalJSON();
|
|
|
|
if (event == 'Complete') {
|
|
try {
|
|
(this.options['on' + this.transport.status]
|
|
|| this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
|
|
|| Prototype.emptyFunction)(transport, json);
|
|
} catch (e) {
|
|
this.dispatchException(e);
|
|
}
|
|
|
|
if ((this.header('Content-type') || '').match(/^text\/javascript/i))
|
|
this.evalResponse();
|
|
}
|
|
|
|
try {
|
|
(this.options['on' + event] || Prototype.emptyFunction)(transport, json);
|
|
Ajax.Responders.dispatch('on' + event, this, transport, json);
|
|
} catch (e) {
|
|
this.dispatchException(e);
|
|
}
|
|
|
|
/* Avoid memory leak in MSIE: clean up the oncomplete event handler */
|
|
if (event == 'Complete')
|
|
this.transport.onreadystatechange = Prototype.emptyFunction;
|
|
},
|
|
|
|
dispatchException: function(exception) {
|
|
(this.options.onException || Prototype.emptyFunction)(this, exception);
|
|
Ajax.Responders.dispatch('onException', this, exception);
|
|
}
|
|
});
|
|
|
|
Ajax.Updater = Class.create();
|
|
|
|
Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
|
|
initialize: function(container, url, options) {
|
|
this.containers = {
|
|
success: container.success ? $(container.success) : $(container),
|
|
failure: container.failure ? $(container.failure) :
|
|
(container.success ? null : $(container))
|
|
}
|
|
|
|
this.transport = Ajax.getTransport();
|
|
this.setOptions(options);
|
|
|
|
var onComplete = this.options.onComplete || Prototype.emptyFunction;
|
|
this.options.onComplete = (function(transport, object) {
|
|
this.updateContent();
|
|
onComplete(transport, object);
|
|
}).bind(this);
|
|
|
|
this.request(url);
|
|
},
|
|
|
|
updateContent: function() {
|
|
var receiver = this.responseIsSuccess() ?
|
|
this.containers.success : this.containers.failure;
|
|
var response = this.transport.responseText;
|
|
|
|
if (!this.options.evalScripts)
|
|
response = response.stripScripts();
|
|
|
|
if (receiver) {
|
|
if (this.options.insertion) {
|
|
new this.options.insertion(receiver, response);
|
|
} else {
|
|
Element.update(receiver, response);
|
|
}
|
|
}
|
|
|
|
if (this.responseIsSuccess()) {
|
|
if (this.onComplete)
|
|
setTimeout(this.onComplete.bind(this), 10);
|
|
}
|
|
}
|
|
});
|
|
|
|
Ajax.PeriodicalUpdater = Class.create();
|
|
Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
|
|
initialize: function(container, url, options) {
|
|
this.setOptions(options);
|
|
this.onComplete = this.options.onComplete;
|
|
|
|
this.frequency = (this.options.frequency || 2);
|
|
this.decay = (this.options.decay || 1);
|
|
|
|
this.updater = {};
|
|
this.container = container;
|
|
this.url = url;
|
|
|
|
this.start();
|
|
},
|
|
|
|
start: function() {
|
|
this.options.onComplete = this.updateComplete.bind(this);
|
|
this.onTimerEvent();
|
|
},
|
|
|
|
stop: function() {
|
|
this.updater.onComplete = undefined;
|
|
clearTimeout(this.timer);
|
|
(this.onComplete || Prototype.emptyFunction).apply(this, arguments);
|
|
},
|
|
|
|
updateComplete: function(request) {
|
|
if (this.options.decay) {
|
|
this.decay = (request.responseText == this.lastText ?
|
|
this.decay * this.options.decay : 1);
|
|
|
|
this.lastText = request.responseText;
|
|
}
|
|
this.timer = setTimeout(this.onTimerEvent.bind(this),
|
|
this.decay * this.frequency * 1000);
|
|
},
|
|
|
|
onTimerEvent: function() {
|
|
this.updater = new Ajax.Updater(this.container, this.url, this.options);
|
|
}
|
|
});
|
|
function $() {
|
|
var results = [], element;
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
element = arguments[i];
|
|
if (typeof element == 'string')
|
|
element = document.getElementById(element);
|
|
results.push(Element.extend(element));
|
|
}
|
|
return results.length < 2 ? results[0] : results;
|
|
}
|
|
|
|
document.getElementsByClassName = function(className, parentElement) {
|
|
var children = ($(parentElement) || document.body).getElementsByTagName('*');
|
|
return $A(children).inject([], function(elements, child) {
|
|
if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
|
|
elements.push(Element.extend(child));
|
|
return elements;
|
|
});
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
if (!window.Element)
|
|
var Element = new Object();
|
|
|
|
Element.extend = function(element) {
|
|
if (!element) return;
|
|
if (_nativeExtensions) return element;
|
|
|
|
if (!element._extended && element.tagName && element != window) {
|
|
var methods = Element.Methods, cache = Element.extend.cache;
|
|
for (property in methods) {
|
|
var value = methods[property];
|
|
if (typeof value == 'function')
|
|
element[property] = cache.findOrStore(value);
|
|
}
|
|
}
|
|
|
|
element._extended = true;
|
|
return element;
|
|
}
|
|
|
|
Element.extend.cache = {
|
|
findOrStore: function(value) {
|
|
return this[value] = this[value] || function() {
|
|
return value.apply(null, [this].concat($A(arguments)));
|
|
}
|
|
}
|
|
}
|
|
|
|
Element.Methods = {
|
|
visible: function(element) {
|
|
return $(element).style.display != 'none';
|
|
},
|
|
|
|
toggle: function() {
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
var element = $(arguments[i]);
|
|
Element[Element.visible(element) ? 'hide' : 'show'](element);
|
|
}
|
|
},
|
|
|
|
hide: function() {
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
var element = $(arguments[i]);
|
|
element.style.display = 'none';
|
|
}
|
|
},
|
|
|
|
show: function() {
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
var element = $(arguments[i]);
|
|
element.style.display = '';
|
|
}
|
|
},
|
|
|
|
remove: function(element) {
|
|
element = $(element);
|
|
element.parentNode.removeChild(element);
|
|
},
|
|
|
|
update: function(element, html) {
|
|
$(element).innerHTML = html.stripScripts();
|
|
setTimeout(function() {html.evalScripts()}, 10);
|
|
},
|
|
|
|
replace: function(element, html) {
|
|
element = $(element);
|
|
if (element.outerHTML) {
|
|
element.outerHTML = html.stripScripts();
|
|
} else {
|
|
var range = element.ownerDocument.createRange();
|
|
range.selectNodeContents(element);
|
|
element.parentNode.replaceChild(
|
|
range.createContextualFragment(html.stripScripts()), element);
|
|
}
|
|
setTimeout(function() {html.evalScripts()}, 10);
|
|
},
|
|
|
|
getHeight: function(element) {
|
|
element = $(element);
|
|
return element.offsetHeight;
|
|
},
|
|
|
|
classNames: function(element) {
|
|
return new Element.ClassNames(element);
|
|
},
|
|
|
|
hasClassName: function(element, className) {
|
|
if (!(element = $(element))) return;
|
|
return Element.classNames(element).include(className);
|
|
},
|
|
|
|
addClassName: function(element, className) {
|
|
if (!(element = $(element))) return;
|
|
return Element.classNames(element).add(className);
|
|
},
|
|
|
|
removeClassName: function(element, className) {
|
|
if (!(element = $(element))) return;
|
|
return Element.classNames(element).remove(className);
|
|
},
|
|
|
|
// removes whitespace-only text node children
|
|
cleanWhitespace: function(element) {
|
|
element = $(element);
|
|
for (var i = 0; i < element.childNodes.length; i++) {
|
|
var node = element.childNodes[i];
|
|
if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
|
|
Element.remove(node);
|
|
}
|
|
},
|
|
|
|
empty: function(element) {
|
|
return $(element).innerHTML.match(/^\s*$/);
|
|
},
|
|
|
|
childOf: function(element, ancestor) {
|
|
element = $(element), ancestor = $(ancestor);
|
|
while (element = element.parentNode)
|
|
if (element == ancestor) return true;
|
|
return false;
|
|
},
|
|
|
|
scrollTo: function(element) {
|
|
element = $(element);
|
|
var x = element.x ? element.x : element.offsetLeft,
|
|
y = element.y ? element.y : element.offsetTop;
|
|
window.scrollTo(x, y);
|
|
},
|
|
|
|
getStyle: function(element, style) {
|
|
element = $(element);
|
|
var value = element.style[style.camelize()];
|
|
if (!value) {
|
|
if (document.defaultView && document.defaultView.getComputedStyle) {
|
|
var css = document.defaultView.getComputedStyle(element, null);
|
|
value = css ? css.getPropertyValue(style) : null;
|
|
} else if (element.currentStyle) {
|
|
value = element.currentStyle[style.camelize()];
|
|
}
|
|
}
|
|
|
|
if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
|
|
if (Element.getStyle(element, 'position') == 'static') value = 'auto';
|
|
|
|
return value == 'auto' ? null : value;
|
|
},
|
|
|
|
setStyle: function(element, style) {
|
|
element = $(element);
|
|
for (var name in style)
|
|
element.style[name.camelize()] = style[name];
|
|
},
|
|
|
|
getDimensions: function(element) {
|
|
element = $(element);
|
|
if (Element.getStyle(element, 'display') != 'none')
|
|
return {width: element.offsetWidth, height: element.offsetHeight};
|
|
|
|
// All *Width and *Height properties give 0 on elements with display none,
|
|
// so enable the element temporarily
|
|
var els = element.style;
|
|
var originalVisibility = els.visibility;
|
|
var originalPosition = els.position;
|
|
els.visibility = 'hidden';
|
|
els.position = 'absolute';
|
|
els.display = '';
|
|
var originalWidth = element.clientWidth;
|
|
var originalHeight = element.clientHeight;
|
|
els.display = 'none';
|
|
els.position = originalPosition;
|
|
els.visibility = originalVisibility;
|
|
return {width: originalWidth, height: originalHeight};
|
|
},
|
|
|
|
makePositioned: function(element) {
|
|
element = $(element);
|
|
var pos = Element.getStyle(element, 'position');
|
|
if (pos == 'static' || !pos) {
|
|
element._madePositioned = true;
|
|
element.style.position = 'relative';
|
|
// Opera returns the offset relative to the positioning context, when an
|
|
// element is position relative but top and left have not been defined
|
|
if (window.opera) {
|
|
element.style.top = 0;
|
|
element.style.left = 0;
|
|
}
|
|
}
|
|
},
|
|
|
|
undoPositioned: function(element) {
|
|
element = $(element);
|
|
if (element._madePositioned) {
|
|
element._madePositioned = undefined;
|
|
element.style.position =
|
|
element.style.top =
|
|
element.style.left =
|
|
element.style.bottom =
|
|
element.style.right = '';
|
|
}
|
|
},
|
|
|
|
makeClipping: function(element) {
|
|
element = $(element);
|
|
if (element._overflow) return;
|
|
element._overflow = element.style.overflow;
|
|
if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
|
|
element.style.overflow = 'hidden';
|
|
},
|
|
|
|
undoClipping: function(element) {
|
|
element = $(element);
|
|
if (element._overflow) return;
|
|
element.style.overflow = element._overflow;
|
|
element._overflow = undefined;
|
|
}
|
|
}
|
|
|
|
Object.extend(Element, Element.Methods);
|
|
|
|
var _nativeExtensions = false;
|
|
|
|
if(!HTMLElement && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
|
|
var HTMLElement = {}
|
|
HTMLElement.prototype = document.createElement('div').__proto__;
|
|
}
|
|
|
|
Element.addMethods = function(methods) {
|
|
Object.extend(Element.Methods, methods || {});
|
|
|
|
if(typeof HTMLElement != 'undefined') {
|
|
var methods = Element.Methods, cache = Element.extend.cache;
|
|
for (property in methods) {
|
|
var value = methods[property];
|
|
if (typeof value == 'function')
|
|
HTMLElement.prototype[property] = cache.findOrStore(value);
|
|
}
|
|
_nativeExtensions = true;
|
|
}
|
|
}
|
|
|
|
Element.addMethods();
|
|
|
|
var Toggle = new Object();
|
|
Toggle.display = Element.toggle;
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
Abstract.Insertion = function(adjacency) {
|
|
this.adjacency = adjacency;
|
|
}
|
|
|
|
Abstract.Insertion.prototype = {
|
|
initialize: function(element, content) {
|
|
this.element = $(element);
|
|
this.content = content.stripScripts();
|
|
|
|
if (this.adjacency && this.element.insertAdjacentHTML) {
|
|
try {
|
|
this.element.insertAdjacentHTML(this.adjacency, this.content);
|
|
} catch (e) {
|
|
var tagName = this.element.tagName.toLowerCase();
|
|
if (tagName == 'tbody' || tagName == 'tr') {
|
|
this.insertContent(this.contentFromAnonymousTable());
|
|
} else {
|
|
throw e;
|
|
}
|
|
}
|
|
} else {
|
|
this.range = this.element.ownerDocument.createRange();
|
|
if (this.initializeRange) this.initializeRange();
|
|
this.insertContent([this.range.createContextualFragment(this.content)]);
|
|
}
|
|
|
|
setTimeout(function() {content.evalScripts()}, 10);
|
|
},
|
|
|
|
contentFromAnonymousTable: function() {
|
|
var div = document.createElement('div');
|
|
div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
|
|
return $A(div.childNodes[0].childNodes[0].childNodes);
|
|
}
|
|
}
|
|
|
|
var Insertion = new Object();
|
|
|
|
Insertion.Before = Class.create();
|
|
Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
|
|
initializeRange: function() {
|
|
this.range.setStartBefore(this.element);
|
|
},
|
|
|
|
insertContent: function(fragments) {
|
|
fragments.each((function(fragment) {
|
|
this.element.parentNode.insertBefore(fragment, this.element);
|
|
}).bind(this));
|
|
}
|
|
});
|
|
|
|
Insertion.Top = Class.create();
|
|
Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
|
|
initializeRange: function() {
|
|
this.range.selectNodeContents(this.element);
|
|
this.range.collapse(true);
|
|
},
|
|
|
|
insertContent: function(fragments) {
|
|
fragments.reverse(false).each((function(fragment) {
|
|
this.element.insertBefore(fragment, this.element.firstChild);
|
|
}).bind(this));
|
|
}
|
|
});
|
|
|
|
Insertion.Bottom = Class.create();
|
|
Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
|
|
initializeRange: function() {
|
|
this.range.selectNodeContents(this.element);
|
|
this.range.collapse(this.element);
|
|
},
|
|
|
|
insertContent: function(fragments) {
|
|
fragments.each((function(fragment) {
|
|
this.element.appendChild(fragment);
|
|
}).bind(this));
|
|
}
|
|
});
|
|
|
|
Insertion.After = Class.create();
|
|
Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
|
|
initializeRange: function() {
|
|
this.range.setStartAfter(this.element);
|
|
},
|
|
|
|
insertContent: function(fragments) {
|
|
fragments.each((function(fragment) {
|
|
this.element.parentNode.insertBefore(fragment,
|
|
this.element.nextSibling);
|
|
}).bind(this));
|
|
}
|
|
});
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
Element.ClassNames = Class.create();
|
|
Element.ClassNames.prototype = {
|
|
initialize: function(element) {
|
|
this.element = $(element);
|
|
},
|
|
|
|
_each: function(iterator) {
|
|
this.element.className.split(/\s+/).select(function(name) {
|
|
return name.length > 0;
|
|
})._each(iterator);
|
|
},
|
|
|
|
set: function(className) {
|
|
this.element.className = className;
|
|
},
|
|
|
|
add: function(classNameToAdd) {
|
|
if (this.include(classNameToAdd)) return;
|
|
this.set(this.toArray().concat(classNameToAdd).join(' '));
|
|
},
|
|
|
|
remove: function(classNameToRemove) {
|
|
if (!this.include(classNameToRemove)) return;
|
|
this.set(this.select(function(className) {
|
|
return className != classNameToRemove;
|
|
}).join(' '));
|
|
},
|
|
|
|
toString: function() {
|
|
return this.toArray().join(' ');
|
|
}
|
|
}
|
|
|
|
Object.extend(Element.ClassNames.prototype, Enumerable);
|
|
var Selector = Class.create();
|
|
Selector.prototype = {
|
|
initialize: function(expression) {
|
|
this.params = {classNames: []};
|
|
this.expression = expression.toString().strip();
|
|
this.parseExpression();
|
|
this.compileMatcher();
|
|
},
|
|
|
|
parseExpression: function() {
|
|
function abort(message) { throw 'Parse error in selector: ' + message; }
|
|
|
|
if (this.expression == '') abort('empty expression');
|
|
|
|
var params = this.params, expr = this.expression, match, modifier, clause, rest;
|
|
while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
|
|
params.attributes = params.attributes || [];
|
|
params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
|
|
expr = match[1];
|
|
}
|
|
|
|
if (expr == '*') return this.params.wildcard = true;
|
|
|
|
while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
|
|
modifier = match[1], clause = match[2], rest = match[3];
|
|
switch (modifier) {
|
|
case '#': params.id = clause; break;
|
|
case '.': params.classNames.push(clause); break;
|
|
case '':
|
|
case undefined: params.tagName = clause.toUpperCase(); break;
|
|
default: abort(expr.inspect());
|
|
}
|
|
expr = rest;
|
|
}
|
|
|
|
if (expr.length > 0) abort(expr.inspect());
|
|
},
|
|
|
|
buildMatchExpression: function() {
|
|
var params = this.params, conditions = [], clause;
|
|
|
|
if (params.wildcard)
|
|
conditions.push('true');
|
|
if (clause = params.id)
|
|
conditions.push('element.id == ' + clause.inspect());
|
|
if (clause = params.tagName)
|
|
conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
|
|
if ((clause = params.classNames).length > 0)
|
|
for (var i = 0; i < clause.length; i++)
|
|
conditions.push('Element.hasClassName(element, ' + clause[i].inspect() + ')');
|
|
if (clause = params.attributes) {
|
|
clause.each(function(attribute) {
|
|
var value = 'element.getAttribute(' + attribute.name.inspect() + ')';
|
|
var splitValueBy = function(delimiter) {
|
|
return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
|
|
}
|
|
|
|
switch (attribute.operator) {
|
|
case '=': conditions.push(value + ' == ' + attribute.value.inspect()); break;
|
|
case '~=': conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
|
|
case '|=': conditions.push(
|
|
splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
|
|
); break;
|
|
case '!=': conditions.push(value + ' != ' + attribute.value.inspect()); break;
|
|
case '':
|
|
case undefined: conditions.push(value + ' != null'); break;
|
|
default: throw 'Unknown operator ' + attribute.operator + ' in selector';
|
|
}
|
|
});
|
|
}
|
|
|
|
return conditions.join(' && ');
|
|
},
|
|
|
|
compileMatcher: function() {
|
|
this.match = new Function('element', 'if (!element.tagName) return false; \
|
|
return ' + this.buildMatchExpression());
|
|
},
|
|
|
|
findElements: function(scope) {
|
|
var element;
|
|
|
|
if (element = $(this.params.id))
|
|
if (this.match(element))
|
|
if (!scope || Element.childOf(element, scope))
|
|
return [element];
|
|
|
|
scope = (scope || document).getElementsByTagName(this.params.tagName || '*');
|
|
|
|
var results = [];
|
|
for (var i = 0; i < scope.length; i++)
|
|
if (this.match(element = scope[i]))
|
|
results.push(Element.extend(element));
|
|
|
|
return results;
|
|
},
|
|
|
|
toString: function() {
|
|
return this.expression;
|
|
}
|
|
}
|
|
|
|
function $$() {
|
|
return $A(arguments).map(function(expression) {
|
|
return expression.strip().split(/\s+/).inject([null], function(results, expr) {
|
|
var selector = new Selector(expr);
|
|
return results.map(selector.findElements.bind(selector)).flatten();
|
|
});
|
|
}).flatten();
|
|
}
|
|
var Field = {
|
|
clear: function() {
|
|
for (var i = 0; i < arguments.length; i++)
|
|
$(arguments[i]).value = '';
|
|
},
|
|
|
|
focus: function(element) {
|
|
$(element).focus();
|
|
},
|
|
|
|
present: function() {
|
|
for (var i = 0; i < arguments.length; i++)
|
|
if ($(arguments[i]).value == '') return false;
|
|
return true;
|
|
},
|
|
|
|
select: function(element) {
|
|
$(element).select();
|
|
},
|
|
|
|
activate: function(element) {
|
|
element = $(element);
|
|
element.focus();
|
|
if (element.select)
|
|
element.select();
|
|
}
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
var Form = {
|
|
serialize: function(form) {
|
|
var elements = Form.getElements($(form));
|
|
var queryComponents = new Array();
|
|
|
|
for (var i = 0; i < elements.length; i++) {
|
|
var queryComponent = Form.Element.serialize(elements[i]);
|
|
if (queryComponent)
|
|
queryComponents.push(queryComponent);
|
|
}
|
|
|
|
return queryComponents.join('&');
|
|
},
|
|
|
|
getElements: function(form) {
|
|
form = $(form);
|
|
var elements = new Array();
|
|
|
|
for (var 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) {
|
|
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 = '';
|
|
}
|
|
},
|
|
|
|
findFirstElement: function(form) {
|
|
return Form.getElements(form).find(function(element) {
|
|
return element.type != 'hidden' && !element.disabled &&
|
|
['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
|
|
});
|
|
},
|
|
|
|
focusFirstElement: function(form) {
|
|
Field.activate(Form.findFirstElement(form));
|
|
},
|
|
|
|
reset: function(form) {
|
|
$(form).reset();
|
|
}
|
|
}
|
|
|
|
Form.Element = {
|
|
serialize: function(element) {
|
|
element = $(element);
|
|
var method = element.tagName.toLowerCase();
|
|
var parameter = Form.Element.Serializers[method](element);
|
|
|
|
if (parameter) {
|
|
var key = encodeURIComponent(parameter[0]);
|
|
if (key.length == 0) return;
|
|
|
|
if (parameter[1].constructor != Array)
|
|
parameter[1] = [parameter[1]];
|
|
|
|
return parameter[1].map(function(value) {
|
|
return key + '=' + encodeURIComponent(value);
|
|
}).join('&');
|
|
}
|
|
},
|
|
|
|
getValue: function(element) {
|
|
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) {
|
|
return Form.Element.Serializers[element.type == 'select-one' ?
|
|
'selectOne' : 'selectMany'](element);
|
|
},
|
|
|
|
selectOne: function(element) {
|
|
var value = '', opt, index = element.selectedIndex;
|
|
if (index >= 0) {
|
|
opt = element.options[index];
|
|
value = opt.value || opt.text;
|
|
}
|
|
return [element.name, value];
|
|
},
|
|
|
|
selectMany: function(element) {
|
|
var value = [];
|
|
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 = Object.extend(new Abstract.TimedObserver(), {
|
|
getValue: function() {
|
|
return Form.Element.getValue(this.element);
|
|
}
|
|
});
|
|
|
|
Form.Observer = Class.create();
|
|
Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
|
|
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':
|
|
Event.observe(element, 'click', this.onElementEvent.bind(this));
|
|
break;
|
|
case 'password':
|
|
case 'text':
|
|
case 'textarea':
|
|
case 'select-one':
|
|
case 'select-multiple':
|
|
Event.observe(element, 'change', this.onElementEvent.bind(this));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Form.Element.EventObserver = Class.create();
|
|
Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
|
|
getValue: function() {
|
|
return Form.Element.getValue(this.element);
|
|
}
|
|
});
|
|
|
|
Form.EventObserver = Class.create();
|
|
Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
|
|
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;
|
|
event.cancelBubble = true;
|
|
}
|
|
},
|
|
|
|
// 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.match(/Konqueror|Safari|KHTML/)
|
|
|| 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.match(/Konqueror|Safari|KHTML/)
|
|
|| 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 */
|
|
if (navigator.appVersion.match(/\bMSIE\b/))
|
|
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];
|
|
},
|
|
|
|
positionedOffset: function(element) {
|
|
var valueT = 0, valueL = 0;
|
|
do {
|
|
valueT += element.offsetTop || 0;
|
|
valueL += element.offsetLeft || 0;
|
|
element = element.offsetParent;
|
|
if (element) {
|
|
p = Element.getStyle(element, 'position');
|
|
if (p == 'relative' || p == 'absolute') break;
|
|
}
|
|
} while (element);
|
|
return [valueL, valueT];
|
|
},
|
|
|
|
offsetParent: function(element) {
|
|
if (element.offsetParent) return element.offsetParent;
|
|
if (element == document.body) return element;
|
|
|
|
while ((element = element.parentNode) && element != document.body)
|
|
if (Element.getStyle(element, 'position') != 'static')
|
|
return element;
|
|
|
|
return document.body;
|
|
},
|
|
|
|
// 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';
|
|
},
|
|
|
|
page: function(forElement) {
|
|
var valueT = 0, valueL = 0;
|
|
|
|
var element = forElement;
|
|
do {
|
|
valueT += element.offsetTop || 0;
|
|
valueL += element.offsetLeft || 0;
|
|
|
|
// Safari fix
|
|
if (element.offsetParent==document.body)
|
|
if (Element.getStyle(element,'position')=='absolute') break;
|
|
|
|
} while (element = element.offsetParent);
|
|
|
|
element = forElement;
|
|
do {
|
|
valueT -= element.scrollTop || 0;
|
|
valueL -= element.scrollLeft || 0;
|
|
} while (element = element.parentNode);
|
|
|
|
return [valueL, valueT];
|
|
},
|
|
|
|
clone: function(source, target) {
|
|
var options = Object.extend({
|
|
setLeft: true,
|
|
setTop: true,
|
|
setWidth: true,
|
|
setHeight: true,
|
|
offsetTop: 0,
|
|
offsetLeft: 0
|
|
}, arguments[2] || {})
|
|
|
|
// find page position of source
|
|
source = $(source);
|
|
var p = Position.page(source);
|
|
|
|
// find coordinate system to use
|
|
target = $(target);
|
|
var delta = [0, 0];
|
|
var parent = null;
|
|
// delta [0,0] will do fine with position: fixed elements,
|
|
// position:absolute needs offsetParent deltas
|
|
if (Element.getStyle(target,'position') == 'absolute') {
|
|
parent = Position.offsetParent(target);
|
|
delta = Position.page(parent);
|
|
}
|
|
|
|
// correct by body offsets (fixes Safari)
|
|
if (parent == document.body) {
|
|
delta[0] -= document.body.offsetLeft;
|
|
delta[1] -= document.body.offsetTop;
|
|
}
|
|
|
|
// set position
|
|
if(options.setLeft) target.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
|
|
if(options.setTop) target.style.top = (p[1] - delta[1] + options.offsetTop) + 'px';
|
|
if(options.setWidth) target.style.width = source.offsetWidth + 'px';
|
|
if(options.setHeight) target.style.height = source.offsetHeight + 'px';
|
|
},
|
|
|
|
absolutize: function(element) {
|
|
element = $(element);
|
|
if (element.style.position == 'absolute') return;
|
|
Position.prepare();
|
|
|
|
var offsets = Position.positionedOffset(element);
|
|
var top = offsets[1];
|
|
var left = offsets[0];
|
|
var width = element.clientWidth;
|
|
var height = element.clientHeight;
|
|
|
|
element._originalLeft = left - parseFloat(element.style.left || 0);
|
|
element._originalTop = top - parseFloat(element.style.top || 0);
|
|
element._originalWidth = element.style.width;
|
|
element._originalHeight = element.style.height;
|
|
|
|
element.style.position = 'absolute';
|
|
element.style.top = top + 'px';;
|
|
element.style.left = left + 'px';;
|
|
element.style.width = width + 'px';;
|
|
element.style.height = height + 'px';;
|
|
},
|
|
|
|
relativize: function(element) {
|
|
element = $(element);
|
|
if (element.style.position == 'relative') return;
|
|
Position.prepare();
|
|
|
|
element.style.position = 'relative';
|
|
var top = parseFloat(element.style.top || 0) - (element._originalTop || 0);
|
|
var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
|
|
|
|
element.style.top = top + 'px';
|
|
element.style.left = left + 'px';
|
|
element.style.height = element._originalHeight;
|
|
element.style.width = element._originalWidth;
|
|
}
|
|
}
|
|
|
|
// Safari returns margins on body which is incorrect if the child is absolutely
|
|
// positioned. For performance reasons, redefine Position.cumulativeOffset for
|
|
// KHTML/WebKit only.
|
|
if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
|
|
Position.cumulativeOffset = function(element) {
|
|
var valueT = 0, valueL = 0;
|
|
do {
|
|
valueT += element.offsetTop || 0;
|
|
valueL += element.offsetLeft || 0;
|
|
if (element.offsetParent == document.body)
|
|
if (Element.getStyle(element, 'position') == 'absolute') break;
|
|
|
|
element = element.offsetParent;
|
|
} while (element);
|
|
|
|
return [valueL, valueT];
|
|
}
|
|
} |