// $Id: drupal.js,v 1.22.2.2 2006/08/19 19:55:20 killes Exp $ /** * Only enable Javascript functionality if all required features are supported. */ function isJsEnabled() { if (typeof document.jsEnabled == 'undefined') { // Note: ! casts to boolean implicitly. document.jsEnabled = !( !document.getElementsByTagName || !document.createElement || !document.createTextNode || !document.documentElement || !document.getElementById); } return document.jsEnabled; } // Global Killswitch on the element if (isJsEnabled()) { document.documentElement.className = 'js'; } /** * Make IE's XMLHTTP object accessible through XMLHttpRequest() */ if (typeof XMLHttpRequest == 'undefined') { XMLHttpRequest = function () { var msxmls = ['MSXML3', 'MSXML2', 'Microsoft'] for (var i=0; i < msxmls.length; i++) { try { return new ActiveXObject(msxmls[i]+'.XMLHTTP') } catch (e) { } } throw new Error("No XML component installed!"); } } /** * Creates an HTTP GET request and sends the response to the callback function. * * Note that dynamic arguments in the URI should be escaped with encodeURIComponent(). */ function HTTPGet(uri, callbackFunction, callbackParameter) { var xmlHttp = new XMLHttpRequest(); var bAsync = true; if (!callbackFunction) { bAsync = false; } xmlHttp.open('GET', uri, bAsync); xmlHttp.send(null); if (bAsync) { xmlHttp.onreadystatechange = function() { if (xmlHttp.readyState == 4) { callbackFunction(xmlHttp.responseText, xmlHttp, callbackParameter); } } return xmlHttp; } else { return xmlHttp.responseText; } } /** * Creates an HTTP POST request and sends the response to the callback function * * Note: passing null or undefined for 'object' makes the request fail in Opera 8. * Pass an empty string instead. */ function HTTPPost(uri, callbackFunction, callbackParameter, object) { var xmlHttp = new XMLHttpRequest(); var bAsync = true; if (!callbackFunction) { bAsync = false; } xmlHttp.open('POST', uri, bAsync); var toSend = ''; if (typeof object == 'object') { xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); for (var i in object) { toSend += (toSend ? '&' : '') + i + '=' + encodeURIComponent(object[i]); } } else { toSend = object; } xmlHttp.send(toSend); if (bAsync) { xmlHttp.onreadystatechange = function() { if (xmlHttp.readyState == 4) { callbackFunction(xmlHttp.responseText, xmlHttp, callbackParameter); } } return xmlHttp; } else { return xmlHttp.responseText; } } /** * Redirects a button's form submission to a hidden iframe and displays the result * in a given wrapper. The iframe should contain a call to * window.parent.iframeHandler() after submission. */ function redirectFormButton(uri, button, handler) { // (Re)create an iframe to target. createIframe(); // Trap the button button.onmouseover = button.onfocus = function() { button.onclick = function() { // Prepare variables for use in anonymous function. var button = this; var action = button.form.action; var target = button.form.target; // Redirect form submission this.form.action = uri; this.form.target = 'redirect-target'; handler.onsubmit(); // Set iframe handler for later window.iframeHandler = function () { var iframe = $('redirect-target'); // Restore form submission button.form.action = action; button.form.target = target; // Get response from iframe body try { response = (iframe.contentWindow || iframe.contentDocument || iframe).document.body.innerHTML; // Firefox 1.0.x hack: Remove (corrupted) control characters response = response.replace(/[\f\n\r\t]/g, ' '); if (window.opera) { // Opera-hack: it returns innerHTML sanitized. response = response.replace(/"/g, '"'); } } catch (e) { response = null; } $('redirect-target').onload = null; $('redirect-target').src = 'about:blank'; response = parseJson(response); // Check response code if (response.status == 0) { handler.onerror(response.data); return; } handler.oncomplete(response.data); } return true; } } button.onmouseout = button.onblur = function() { button.onclick = null; } } /** * Adds a function to the window onload event */ function addLoadEvent(func) { var oldOnload = window.onload; if (typeof window.onload != 'function') { window.onload = func; } else { window.onload = function() { oldOnload(); func(); } } } /** * Adds a function to a given form's submit event */ function addSubmitEvent(form, func) { var oldSubmit = form.onsubmit; if (typeof oldSubmit != 'function') { form.onsubmit = func; } else { form.onsubmit = function() { return oldSubmit() && func(); } } } /** * Retrieves the absolute position of an element on the screen */ function absolutePosition(el) { var sLeft = 0, sTop = 0; var isDiv = /^div$/i.test(el.tagName); if (isDiv && el.scrollLeft) { sLeft = el.scrollLeft; } if (isDiv && el.scrollTop) { sTop = el.scrollTop; } var r = { x: el.offsetLeft - sLeft, y: el.offsetTop - sTop }; if (el.offsetParent) { var tmp = absolutePosition(el.offsetParent); r.x += tmp.x; r.y += tmp.y; } return r; }; function dimensions(el) { return { width: el.offsetWidth, height: el.offsetHeight }; } /** * Returns true if an element has a specified class name */ function hasClass(node, className) { if (node.className == className) { return true; } var reg = new RegExp('(^| )'+ className +'($| )') if (reg.test(node.className)) { return true; } return false; } /** * Adds a class name to an element */ function addClass(node, className) { if (hasClass(node, className)) { return false; } node.className += ' '+ className; return true; } /** * Removes a class name from an element */ function removeClass(node, className) { if (!hasClass(node, className)) { return false; } // Replaces words surrounded with whitespace or at a string border with a space. Prevents multiple class names from being glued together. node.className = eregReplace('(^|\\s+)'+ className +'($|\\s+)', ' ', node.className); return true; } /** * Toggles a class name on or off for an element */ function toggleClass(node, className) { if (!removeClass(node, className) && !addClass(node, className)) { return false; } return true; } /** * Emulate PHP's ereg_replace function in javascript */ function eregReplace(search, replace, subject) { return subject.replace(new RegExp(search,'g'), replace); } /** * Removes an element from the page */ function removeNode(node) { if (typeof node == 'string') { node = $(node); } if (node && node.parentNode) { return node.parentNode.removeChild(node); } else { return false; } } /** * Prevents an event from propagating. */ function stopEvent(event) { if (event.preventDefault) { event.preventDefault(); event.stopPropagation(); } else { event.returnValue = false; event.cancelBubble = true; } } /** * Parse a JSON response. * * The result is either the JSON object, or an object with 'status' 0 and 'data' an error message. */ function parseJson(data) { if (data.substring(0,1) != '{') { return { status: 0, data: data.length ? data : 'Unspecified error' }; } return eval('(' + data + ');'); } /** * Create an invisible iframe for form submissions. */ function createIframe() { // Delete any previous iframe deleteIframe(); // Note: some browsers require the literal name/id attributes on the tag, // some want them set through JS. We do both. window.iframeHandler = function () {}; var div = document.createElement('div'); div.id = 'redirect-holder'; div.innerHTML = ''; var iframe = div.firstChild; with (iframe) { name = 'redirect-target'; setAttribute('name', 'redirect-target'); id = 'redirect-target'; } with (iframe.style) { position = 'absolute'; height = '1px'; width = '1px'; visibility = 'hidden'; } document.body.appendChild(div); } /** * Delete the invisible iframe for form submissions. */ function deleteIframe() { var holder = $('redirect-holder'); if (holder != null) { removeNode(holder); } } /** * Wrapper around document.getElementById(). */ function $(id) { return document.getElementById(id); } function ImageRotator(name, imageCount, div, interval, useLinks) { this.name = name; this.imageCount = imageCount; this.div = div; this.interval = interval; this.useLinks = useLinks; this.createInnerHTML = function() { var innerHTML = ''; innerHTML += ''; innerHTML += ''; innerHTML += '
'; for (var i = 0; i < this.imageCount; i++) { innerHTML += ''; } innerHTML += '
'; if (this.useLinks) innerHTML += ''; innerHTML += ''; if (this.useLinks) innerHTML += ''; innerHTML += '
'; innerHTML += '
'; innerHTML += 'A carregar imagens...'; innerHTML += '

Por favor aguarde...

'; innerHTML += '
'; innerHTML += ''; innerHTML += '
'; return innerHTML; } this.div.innerHTML = this.createInnerHTML(); this.preloader = document.getElementById(this.div.id + 'Preloader'); this.img = document.getElementById(this.div.id + 'Img'); this.imgBG = document.getElementById(this.div.id + 'ImgBG'); if (this.useLinks) this.imgLink = document.getElementById(this.div.id + 'ImgLink'); this.images = []; this.thumbs = []; this.links = []; this.cursor = -1; this.previous = -1; this.borderIdx = 0; this.opacity = 100; this.borders = ['#FFFFFF', '#FFE6E6', '#FFCCCC', '#FFB3B3', '#FF9999', '#FF8080', '#FF6666', '#FF4D4D', '#FF3333', '#FF1A1A', '#FF0000']; this.preloadingFinished = false; for (var i = 0; i < this.imageCount; i++) { this.thumbs[i] = document.getElementById(this.div.id + 'Thumb' + i); if (this.useLinks) this.links[i] = document.getElementById(this.div.id + 'ThumbLink' + i); } this.addImage = function (img, thumb, title, link) { this.images.push( {src: img, title: title, link: link} ); this.thumbs[this.images.length - 1].src = thumb; this.thumbs[this.images.length - 1].title = title; this.thumbs[this.images.length - 1].alt = title; if (this.useLinks) this.links[this.images.length - 1].href = link; } this.rollCursor = function() { this.previous = this.cursor; this.cursor++; if (this.cursor >= this.images.length) this.cursor = 0; } this.rollCursorTo = function(i) { this.previous = this.cursor; this.cursor = i; } this.updateImage = function() { this.img.src = this.images[this.cursor].src; this.img.title = this.images[this.cursor].title; this.img.alt = this.images[this.cursor].title; if (this.useLinks) this.imgLink.href = this.images[this.cursor].link; } this.updateBackground = function() { this.imgBG.style.background = 'url(' + this.images[this.cursor].src + ')'; this.imgBG.style.backgroundRepeat = 'no-repeat'; } this.updateThumbBorder = function(i, color) { this.thumbs[i].style.borderColor = color; } this.init = function() { for (var i = 0; i < this.images.length; i++) { this.images[i].obj = new Image(); this.images[i].obj.src = this.images[i].src; } this.checkPreloadingId = window.setInterval(this.name + '.checkPreloading()', 50); } this.checkPreloading = function() { for (var i = 0; i < this.images.length; i++) { if (!this.images[i].obj.complete) return; } window.clearInterval(this.checkPreloadingId); this.preloader.style.display = 'none'; this.imgBG.style.display = 'block'; this.rollCursor(); this.updateImage(); this.updateBackground(); this.updateThumbBorder(this.cursor, this.borders[this.borders.length - 1]); this.start(); this.preloadingFinished = true; } this.start = function() { this.startId = window.setInterval(this.name + '.rotate()', this.interval); } this.stop = function() { window.clearInterval(this.startId); } this.rotate = function() { this.rollCursor(); this.updateBackground(); this.fadeOutId = window.setInterval(this.name + '.fadeOut()', 20); } this.rotateTo = function(i) { if (!this.preloadingFinished || i == this.cursor) return; this.reset(); this.rollCursorTo(i); this.updateBackground(); this.fadeOutId = window.setInterval(this.name + '.fadeOut()', 20); } this.fadeOut = function() { if (this.opacity > 0) { this.fade(-10); this.borderIdx++; this.updateThumbBorder(this.cursor, this.borders[this.borderIdx]); this.updateThumbBorder(this.previous, this.borders[this.borders.length - this.borderIdx - 1]); } else { window.clearInterval(this.fadeOutId); this.updateImage(); this.fade(100); this.borderIdx = 0; } } this.fade = function(val) { this.opacity += val; this.img.style.filter = 'alpha(opacity=' + this.opacity + ')'; this.img.style.MozOpacity = this.opacity / 100; this.img.style.opacity = this.opacity / 100; } this.reset = function() { this.stop(); window.clearInterval(this.fadeOutId); this.updateImage(); this.opacity = 100; this.img.style.filter = 'alpha(opacity=' + this.opacity + ')'; this.img.style.MozOpacity = this.opacity / 100; this.img.style.opacity = this.opacity / 100; this.borderIdx = 0; this.updateThumbBorder(this.cursor, this.borders[this.borders.length - 1]); if (this.previous != -1) this.updateThumbBorder(this.previous, this.borders[0]); this.start(); } }