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-/*!
- * Ext JS Library 3.3.0
- * Copyright(c) 2006-2010 Ext JS, Inc.
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
-/**
- * @class Ext.DomHelper
- *
The DomHelper class provides a layer of abstraction from DOM and transparently supports creating
- * elements via DOM or using HTML fragments. It also has the ability to create HTML fragment templates
- * from your DOM building code.
- *
- * DomHelper element specification object
- * A specification object is used when creating elements. Attributes of this object
- * are assumed to be element attributes, except for 4 special attributes:
- *
- * - tag :
The tag name of the element
- * - children : or cn
An array of the
- * same kind of element definition objects to be created and appended. These can be nested
- * as deep as you want.
- * - cls :
The class attribute of the element.
- * This will end up being either the "class" attribute on a HTML fragment or className
- * for a DOM node, depending on whether DomHelper is using fragments or DOM.
- * - html :
The innerHTML for the element
- *
- *
- * Insertion methods
- * Commonly used insertion methods:
- *
- * - {@link #append} :
- * - {@link #insertBefore} :
- * - {@link #insertAfter} :
- * - {@link #overwrite} :
- * - {@link #createTemplate} :
- * - {@link #insertHtml} :
- *
- *
- * Example
- * This is an example, where an unordered list with 3 children items is appended to an existing
- * element with id 'my-div':
-
-var dh = Ext.DomHelper; // create shorthand alias
-// specification object
-var spec = {
- id: 'my-ul',
- tag: 'ul',
- cls: 'my-list',
- // append children after creating
- children: [ // may also specify 'cn' instead of 'children'
- {tag: 'li', id: 'item0', html: 'List Item 0'},
- {tag: 'li', id: 'item1', html: 'List Item 1'},
- {tag: 'li', id: 'item2', html: 'List Item 2'}
- ]
-};
-var list = dh.append(
- 'my-div', // the context element 'my-div' can either be the id or the actual node
- spec // the specification object
-);
-
- * Element creation specification parameters in this class may also be passed as an Array of
- * specification objects. This can be used to insert multiple sibling nodes into an existing
- * container very efficiently. For example, to add more list items to the example above:
-dh.append('my-ul', [
- {tag: 'li', id: 'item3', html: 'List Item 3'},
- {tag: 'li', id: 'item4', html: 'List Item 4'}
-]);
- *
- *
- * Templating
- * The real power is in the built-in templating. Instead of creating or appending any elements,
- * {@link #createTemplate} returns a Template object which can be used over and over to
- * insert new elements. Revisiting the example above, we could utilize templating this time:
- *
-// create the node
-var list = dh.append('my-div', {tag: 'ul', cls: 'my-list'});
-// get template
-var tpl = dh.createTemplate({tag: 'li', id: 'item{0}', html: 'List Item {0}'});
-
-for(var i = 0; i < 5, i++){
- tpl.append(list, [i]); // use template to append to the actual node
-}
- *
- * An example using a template:
-var html = '{2}';
-
-var tpl = new Ext.DomHelper.createTemplate(html);
-tpl.append('blog-roll', ['link1', 'http://www.jackslocum.com/', "Jack's Site"]);
-tpl.append('blog-roll', ['link2', 'http://www.dustindiaz.com/', "Dustin's Site"]);
- *
- *
- * The same example using named parameters:
-var html = '{text}';
-
-var tpl = new Ext.DomHelper.createTemplate(html);
-tpl.append('blog-roll', {
- id: 'link1',
- url: 'http://www.jackslocum.com/',
- text: "Jack's Site"
-});
-tpl.append('blog-roll', {
- id: 'link2',
- url: 'http://www.dustindiaz.com/',
- text: "Dustin's Site"
-});
- *
- *
- * Compiling Templates
- * Templates are applied using regular expressions. The performance is great, but if
- * you are adding a bunch of DOM elements using the same template, you can increase
- * performance even further by {@link Ext.Template#compile "compiling"} the template.
- * The way "{@link Ext.Template#compile compile()}" works is the template is parsed and
- * broken up at the different variable points and a dynamic function is created and eval'ed.
- * The generated function performs string concatenation of these parts and the passed
- * variables instead of using regular expressions.
- *
-var html = '{text}';
-
-var tpl = new Ext.DomHelper.createTemplate(html);
-tpl.compile();
-
-//... use template like normal
- *
- *
- * Performance Boost
- * DomHelper will transparently create HTML fragments when it can. Using HTML fragments instead
- * of DOM can significantly boost performance.
- * Element creation specification parameters may also be strings. If {@link #useDom} is false,
- * then the string is used as innerHTML. If {@link #useDom} is true, a string specification
- * results in the creation of a text node. Usage:
- *
-Ext.DomHelper.useDom = true; // force it to use DOM; reduces performance
- *
- * @singleton
- */
-Ext.DomHelper = function(){
- var tempTableEl = null,
- emptyTags = /^(?:br|frame|hr|img|input|link|meta|range|spacer|wbr|area|param|col)$/i,
- tableRe = /^table|tbody|tr|td$/i,
- confRe = /tag|children|cn|html$/i,
- tableElRe = /td|tr|tbody/i,
- cssRe = /([a-z0-9-]+)\s*:\s*([^;\s]+(?:\s*[^;\s]+)*);?/gi,
- endRe = /end/i,
- pub,
- // kill repeat to save bytes
- afterbegin = 'afterbegin',
- afterend = 'afterend',
- beforebegin = 'beforebegin',
- beforeend = 'beforeend',
- ts = '',
- tbs = ts+'',
- tbe = ''+te,
- trs = tbs + '',
- tre = '
'+tbe;
-
- // private
- function doInsert(el, o, returnElement, pos, sibling, append){
- var newNode = pub.insertHtml(pos, Ext.getDom(el), createHtml(o));
- return returnElement ? Ext.get(newNode, true) : newNode;
- }
-
- // build as innerHTML where available
- function createHtml(o){
- var b = '',
- attr,
- val,
- key,
- cn;
-
- if(typeof o == "string"){
- b = o;
- } else if (Ext.isArray(o)) {
- for (var i=0; i < o.length; i++) {
- if(o[i]) {
- b += createHtml(o[i]);
- }
- };
- } else {
- b += '<' + (o.tag = o.tag || 'div');
- for (attr in o) {
- val = o[attr];
- if(!confRe.test(attr)){
- if (typeof val == "object") {
- b += ' ' + attr + '="';
- for (key in val) {
- b += key + ':' + val[key] + ';';
- };
- b += '"';
- }else{
- b += ' ' + ({cls : 'class', htmlFor : 'for'}[attr] || attr) + '="' + val + '"';
- }
- }
- };
- // Now either just close the tag or try to add children and close the tag.
- if (emptyTags.test(o.tag)) {
- b += '/>';
- } else {
- b += '>';
- if ((cn = o.children || o.cn)) {
- b += createHtml(cn);
- } else if(o.html){
- b += o.html;
- }
- b += '' + o.tag + '>';
- }
- }
- return b;
- }
-
- function ieTable(depth, s, h, e){
- tempTableEl.innerHTML = [s, h, e].join('');
- var i = -1,
- el = tempTableEl,
- ns;
- while(++i < depth){
- el = el.firstChild;
- }
-// If the result is multiple siblings, then encapsulate them into one fragment.
- if(ns = el.nextSibling){
- var df = document.createDocumentFragment();
- while(el){
- ns = el.nextSibling;
- df.appendChild(el);
- el = ns;
- }
- el = df;
- }
- return el;
- }
-
- /**
- * @ignore
- * Nasty code for IE's broken table implementation
- */
- function insertIntoTable(tag, where, el, html) {
- var node,
- before;
-
- tempTableEl = tempTableEl || document.createElement('div');
-
- if(tag == 'td' && (where == afterbegin || where == beforeend) ||
- !tableElRe.test(tag) && (where == beforebegin || where == afterend)) {
- return;
- }
- before = where == beforebegin ? el :
- where == afterend ? el.nextSibling :
- where == afterbegin ? el.firstChild : null;
-
- if (where == beforebegin || where == afterend) {
- el = el.parentNode;
- }
-
- if (tag == 'td' || (tag == 'tr' && (where == beforeend || where == afterbegin))) {
- node = ieTable(4, trs, html, tre);
- } else if ((tag == 'tbody' && (where == beforeend || where == afterbegin)) ||
- (tag == 'tr' && (where == beforebegin || where == afterend))) {
- node = ieTable(3, tbs, html, tbe);
- } else {
- node = ieTable(2, ts, html, te);
- }
- el.insertBefore(node, before);
- return node;
- }
-
-
- pub = {
- /**
- * Returns the markup for the passed Element(s) config.
- * @param {Object} o The DOM object spec (and children)
- * @return {String}
- */
- markup : function(o){
- return createHtml(o);
- },
-
- /**
- * Applies a style specification to an element.
- * @param {String/HTMLElement} el The element to apply styles to
- * @param {String/Object/Function} styles A style specification string e.g. 'width:100px', or object in the form {width:'100px'}, or
- * a function which returns such a specification.
- */
- applyStyles : function(el, styles){
- if (styles) {
- var matches;
-
- el = Ext.fly(el);
- if (typeof styles == "function") {
- styles = styles.call();
- }
- if (typeof styles == "string") {
- /**
- * Since we're using the g flag on the regex, we need to set the lastIndex.
- * This automatically happens on some implementations, but not others, see:
- * http://stackoverflow.com/questions/2645273/javascript-regular-expression-literal-persists-between-function-calls
- * http://blog.stevenlevithan.com/archives/fixing-javascript-regexp
- */
- cssRe.lastIndex = 0;
- while ((matches = cssRe.exec(styles))) {
- el.setStyle(matches[1], matches[2]);
- }
- } else if (typeof styles == "object") {
- el.setStyle(styles);
- }
- }
- },
-
- /**
- * Inserts an HTML fragment into the DOM.
- * @param {String} where Where to insert the html in relation to el - beforeBegin, afterBegin, beforeEnd, afterEnd.
- * @param {HTMLElement} el The context element
- * @param {String} html The HTML fragment
- * @return {HTMLElement} The new node
- */
- insertHtml : function(where, el, html){
- var hash = {},
- hashVal,
- setStart,
- range,
- frag,
- rangeEl,
- rs;
-
- where = where.toLowerCase();
- // add these here because they are used in both branches of the condition.
- hash[beforebegin] = ['BeforeBegin', 'previousSibling'];
- hash[afterend] = ['AfterEnd', 'nextSibling'];
-
- if (el.insertAdjacentHTML) {
- if(tableRe.test(el.tagName) && (rs = insertIntoTable(el.tagName.toLowerCase(), where, el, html))){
- return rs;
- }
- // add these two to the hash.
- hash[afterbegin] = ['AfterBegin', 'firstChild'];
- hash[beforeend] = ['BeforeEnd', 'lastChild'];
- if ((hashVal = hash[where])) {
- el.insertAdjacentHTML(hashVal[0], html);
- return el[hashVal[1]];
- }
- } else {
- range = el.ownerDocument.createRange();
- setStart = 'setStart' + (endRe.test(where) ? 'After' : 'Before');
- if (hash[where]) {
- range[setStart](el);
- frag = range.createContextualFragment(html);
- el.parentNode.insertBefore(frag, where == beforebegin ? el : el.nextSibling);
- return el[(where == beforebegin ? 'previous' : 'next') + 'Sibling'];
- } else {
- rangeEl = (where == afterbegin ? 'first' : 'last') + 'Child';
- if (el.firstChild) {
- range[setStart](el[rangeEl]);
- frag = range.createContextualFragment(html);
- if(where == afterbegin){
- el.insertBefore(frag, el.firstChild);
- }else{
- el.appendChild(frag);
- }
- } else {
- el.innerHTML = html;
- }
- return el[rangeEl];
- }
- }
- throw 'Illegal insertion point -> "' + where + '"';
- },
-
- /**
- * Creates new DOM element(s) and inserts them before el.
- * @param {Mixed} el The context element
- * @param {Object/String} o The DOM object spec (and children) or raw HTML blob
- * @param {Boolean} returnElement (optional) true to return a Ext.Element
- * @return {HTMLElement/Ext.Element} The new node
- */
- insertBefore : function(el, o, returnElement){
- return doInsert(el, o, returnElement, beforebegin);
- },
-
- /**
- * Creates new DOM element(s) and inserts them after el.
- * @param {Mixed} el The context element
- * @param {Object} o The DOM object spec (and children)
- * @param {Boolean} returnElement (optional) true to return a Ext.Element
- * @return {HTMLElement/Ext.Element} The new node
- */
- insertAfter : function(el, o, returnElement){
- return doInsert(el, o, returnElement, afterend, 'nextSibling');
- },
-
- /**
- * Creates new DOM element(s) and inserts them as the first child of el.
- * @param {Mixed} el The context element
- * @param {Object/String} o The DOM object spec (and children) or raw HTML blob
- * @param {Boolean} returnElement (optional) true to return a Ext.Element
- * @return {HTMLElement/Ext.Element} The new node
- */
- insertFirst : function(el, o, returnElement){
- return doInsert(el, o, returnElement, afterbegin, 'firstChild');
- },
-
- /**
- * Creates new DOM element(s) and appends them to el.
- * @param {Mixed} el The context element
- * @param {Object/String} o The DOM object spec (and children) or raw HTML blob
- * @param {Boolean} returnElement (optional) true to return a Ext.Element
- * @return {HTMLElement/Ext.Element} The new node
- */
- append : function(el, o, returnElement){
- return doInsert(el, o, returnElement, beforeend, '', true);
- },
-
- /**
- * Creates new DOM element(s) and overwrites the contents of el with them.
- * @param {Mixed} el The context element
- * @param {Object/String} o The DOM object spec (and children) or raw HTML blob
- * @param {Boolean} returnElement (optional) true to return a Ext.Element
- * @return {HTMLElement/Ext.Element} The new node
- */
- overwrite : function(el, o, returnElement){
- el = Ext.getDom(el);
- el.innerHTML = createHtml(o);
- return returnElement ? Ext.get(el.firstChild) : el.firstChild;
- },
-
- createHtml : createHtml
- };
- return pub;
-}();