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File: prototype.js

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File: prototype.js
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Content type: text/plain
Description: Ajax Library
Class: AJAX Grid
Edit and save table data without page refreshing
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Date: 16 years ago
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/* Prototype JavaScript framework, version 1.3.1 * (c) 2005 Sam Stephenson <sam@conio.net> * * THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff * against the source tree, available from the Prototype darcs repository. * * Prototype is freely distributable under the terms of an MIT-style license. * * For details, see the Prototype web site: http://prototype.conio.net/ * /*--------------------------------------------------------------------------*/ var Prototype = { Version: '1.3.1', emptyFunction: function() {} } var Class = { create: function() { return function() { this.initialize.apply(this, arguments); } } } var Abstract = new Object(); Object.extend = function(destination, source) { for (property in source) { destination[property] = source[property]; } return destination; } Object.prototype.extend = function(object) { return Object.extend.apply(this, [this, object]); } Function.prototype.bind = function(object) { var __method = this; return function() { __method.apply(object, arguments); } } Function.prototype.bindAsEventListener = function(object) { var __method = this; return function(event) { __method.call(object, event || window.event); } } Number.prototype.toColorPart = function() { var digits = this.toString(16); if (this < 16) return '0' + digits; return digits; } var Try = { these: function() { var returnValue; for (var i = 0; i < arguments.length; i++) { var lambda = arguments[i]; try { returnValue = lambda(); break; } catch (e) {} } return returnValue; } } /*--------------------------------------------------------------------------*/ var PeriodicalExecuter = Class.create(); PeriodicalExecuter.prototype = { initialize: function(callback, frequency) { this.callback = callback; this.frequency = frequency; this.currentlyExecuting = false; this.registerCallback(); }, registerCallback: function() { setInterval(this.onTimerEvent.bind(this), this.frequency * 1000); }, onTimerEvent: function() { if (!this.currentlyExecuting) { try { this.currentlyExecuting = true; this.callback(); } finally { this.currentlyExecuting = false; } } } } /*--------------------------------------------------------------------------*/ function $() { var elements = new Array(); for (var i = 0; i < arguments.length; i++) { var element = arguments[i]; if (typeof element == 'string') element = document.getElementById(element); if (arguments.length == 1) return element; elements.push(element); } return elements; } if (!Array.prototype.push) { Array.prototype.push = function() { var startLength = this.length; for (var i = 0; i < arguments.length; i++) this[startLength + i] = arguments[i]; return this.length; } } if (!Function.prototype.apply) { // Based on code from http://www.youngpup.net/ Function.prototype.apply = function(object, parameters) { var parameterStrings = new Array(); if (!object) object = window; if (!parameters) parameters = new Array(); for (var i = 0; i < parameters.length; i++) parameterStrings[i] = 'parameters[' + i + ']'; object.__apply__ = this; var result = eval('object.__apply__(' + parameterStrings.join(', ') + ')'); object.__apply__ = null; return result; } } String.prototype.extend({ stripTags: function() { return this.replace(/<\/?[^>]+>/gi, ''); }, escapeHTML: function() { var div = document.createElement('div'); var text = document.createTextNode(this); div.appendChild(text); return div.innerHTML; }, unescapeHTML: function() { var div = document.createElement('div'); div.innerHTML = this.stripTags(); return div.childNodes[0].nodeValue; } }); var Ajax = { getTransport: function() { return Try.these( function() {return new ActiveXObject('Msxml2.XMLHTTP')}, function() {return new ActiveXObject('Microsoft.XMLHTTP')}, function() {return new XMLHttpRequest()} ) || false; } } Ajax.Base = function() {}; Ajax.Base.prototype = { setOptions: function(options) { this.options = { method: 'post', asynchronous: true, parameters: '' }.extend(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 = (new Ajax.Base()).extend({ 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 { if (this.options.method == 'get') url += '?' + parameters; this.transport.open(this.options.method, 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) { } }, setRequestHeaders: function() { var requestHeaders = ['X-Requested-With', 'XMLHttpRequest', 'X-Prototype-Version', Prototype.Version]; if (this.options.method == 'post') { requestHeaders.push('Content-type', 'application/x-www-form-urlencoded'); /* 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); }, respondToReadyState: function(readyState) { var event = Ajax.Request.Events[readyState]; if (event == 'Complete') (this.options['on' + this.transport.status] || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')] || Prototype.emptyFunction)(this.transport); (this.options['on' + event] || Prototype.emptyFunction)(this.transport); /* Avoid memory leak in MSIE: clean up the oncomplete event handler */ if (event == 'Complete') this.transport.onreadystatechange = Prototype.emptyFunction; } }); Ajax.Updater = Class.create(); Ajax.Updater.ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:<\/script>)'; Ajax.Updater.prototype.extend(Ajax.Request.prototype).extend({ 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() { this.updateContent(); onComplete(this.transport); }).bind(this); this.request(url); }, updateContent: function() { var receiver = this.responseIsSuccess() ? this.containers.success : this.containers.failure; var match = new RegExp(Ajax.Updater.ScriptFragment, 'img'); var response = this.transport.responseText.replace(match, ''); var scripts = this.transport.responseText.match(match); if (receiver) { if (this.options.insertion) { new this.options.insertion(receiver, response); } else { receiver.innerHTML = response; } } if (this.responseIsSuccess()) { if (this.onComplete) setTimeout((function() {this.onComplete( this.transport)}).bind(this), 10); } if (this.options.evalScripts && scripts) { match = new RegExp(Ajax.Updater.ScriptFragment, 'im'); setTimeout((function() { for (var i = 0; i < scripts.length; i++) eval(scripts[i].match(match)[1]); }).bind(this), 10); } } }); Ajax.PeriodicalUpdater = Class.create(); Ajax.PeriodicalUpdater.prototype = (new Ajax.Base()).extend({ initialize: function(container, url, options) { this.setOptions(options); this.onComplete = this.options.onComplete; this.frequency = (this.options.frequency || 2); this.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 || Ajax.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); } }); document.getElementsByClassName = function(className) { var children = document.getElementsByTagName('*') || document.all; var elements = new Array(); for (var i = 0; i < children.length; i++) { var child = children[i]; var classNames = child.className.split(' '); for (var j = 0; j < classNames.length; j++) { if (classNames[j] == className) { elements.push(child); break; } } } return elements; } /*--------------------------------------------------------------------------*/ if (!window.Element) { var Element = new Object(); } Object.extend(Element, { toggle: function() { for (var i = 0; i < arguments.length; i++) { var element = $(arguments[i]); element.style.display = (element.style.display == 'none' ? '' : 'none'); } }, 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); }, getHeight: function(element) { element = $(element); return element.offsetHeight; }, hasClassName: function(element, className) { element = $(element); if (!element) return; var a = element.className.split(' '); for (var i = 0; i < a.length; i++) { if (a[i] == className) return true; } return false; }, addClassName: function(element, className) { element = $(element); Element.removeClassName(element, className); element.className += ' ' + className; }, removeClassName: function(element, className) { element = $(element); if (!element) return; var newClassName = ''; var a = element.className.split(' '); for (var i = 0; i < a.length; i++) { if (a[i] != className) { if (i > 0) newClassName += ' '; newClassName += a[i]; } } element.className = newClassName; }, // removes whitespace-only text node children cleanWhitespace: function(element) { var 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); } } }); 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; if (this.adjacency && this.element.insertAdjacentHTML) { this.element.insertAdjacentHTML(this.adjacency, this.content); } else { this.range = this.element.ownerDocument.createRange(); if (this.initializeRange) this.initializeRange(); this.fragment = this.range.createContextualFragment(this.content); this.insertContent(); } } } var Insertion = new Object(); Insertion.Before = Class.create(); Insertion.Before.prototype = (new Abstract.Insertion('beforeBegin')).extend({ initializeRange: function() { this.range.setStartBefore(this.element); }, insertContent: function() { this.element.parentNode.insertBefore(this.fragment, this.element); } }); Insertion.Top = Class.create(); Insertion.Top.prototype = (new Abstract.Insertion('afterBegin')).extend({ initializeRange: function() { this.range.selectNodeContents(this.element); this.range.collapse(true); }, insertContent: function() { this.element.insertBefore(this.fragment, this.element.firstChild); } }); Insertion.Bottom = Class.create(); Insertion.Bottom.prototype = (new Abstract.Insertion('beforeEnd')).extend({ initializeRange: function() { this.range.selectNodeContents(this.element); this.range.collapse(this.element); }, insertContent: function() { this.element.appendChild(this.fragment); } }); Insertion.After = Class.create(); Insertion.After.prototype = (new Abstract.Insertion('afterEnd')).extend({ initializeRange: function() { this.range.setStartAfter(this.element); }, insertContent: function() { this.element.parentNode.insertBefore(this.fragment, this.element.nextSibling); } }); 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).focus(); $(element).select(); } } /*--------------------------------------------------------------------------*/ var Form = { serialize: function(form) { var elements = Form.getElements($(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) { 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) { 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'; } }