/*
* Ext JS Library 2.2.1
* Copyright(c) 2006-2009, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
/**
* @class Ext.DomHelper
* Utility class for working with DOM and/or Templates. It transparently supports using HTML fragments or DOM.
* This is an example, where an unordered list with 5 children items is appended to an existing element with id 'my-div':
var dh = Ext.DomHelper;
var list = dh.append('my-div', {
id: 'my-ul', tag: 'ul', cls: 'my-list', 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'},
{tag: 'li', id: 'item3', html: 'List Item 3'},
{tag: 'li', id: 'item4', html: 'List Item 4'}
]
});
* 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: 'item5', html: 'List Item 5'},
{tag: 'li', id: 'item6', html: 'List Item 6'} ]);
* 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.
* For more information and examples, see the original blog post.
* @singleton
*/
Ext.DomHelper = function(){
var tempTableEl = null;
var emptyTags = /^(?:br|frame|hr|img|input|link|meta|range|spacer|wbr|area|param|col)$/i;
var tableRe = /^table|tbody|tr|td$/i;
// build as innerHTML where available
var createHtml = function(o){
if(typeof o == 'string'){
return o;
}
var b = "";
if (Ext.isArray(o)) {
for (var i = 0, l = o.length; i < l; i++) {
b += createHtml(o[i]);
}
return b;
}
if(!o.tag){
o.tag = "div";
}
b += "<" + o.tag;
for(var attr in o){
if(attr == "tag" || attr == "children" || attr == "cn" || attr == "html" || typeof o[attr] == "function") continue;
if(attr == "style"){
var s = o["style"];
if(typeof s == "function"){
s = s.call();
}
if(typeof s == "string"){
b += ' style="' + s + '"';
}else if(typeof s == "object"){
b += ' style="';
for(var key in s){
if(typeof s[key] != "function"){
b += key + ":" + s[key] + ";";
}
}
b += '"';
}
}else{
if(attr == "cls"){
b += ' class="' + o["cls"] + '"';
}else if(attr == "htmlFor"){
b += ' for="' + o["htmlFor"] + '"';
}else{
b += " " + attr + '="' + o[attr] + '"';
}
}
}
if(emptyTags.test(o.tag)){
b += "/>";
}else{
b += ">";
var cn = o.children || o.cn;
if(cn){
b += createHtml(cn);
} else if(o.html){
b += o.html;
}
b += "" + o.tag + ">";
}
return b;
};
// build as dom
/** @ignore */
var createDom = function(o, parentNode){
var el;
if (Ext.isArray(o)) { // Allow Arrays of siblings to be inserted
el = document.createDocumentFragment(); // in one shot using a DocumentFragment
for(var i = 0, l = o.length; i < l; i++) {
createDom(o[i], el);
}
} else if (typeof o == "string") { // Allow a string as a child spec.
el = document.createTextNode(o);
} else {
el = document.createElement(o.tag||'div');
var useSet = !!el.setAttribute; // In IE some elements don't have setAttribute
for(var attr in o){
if(attr == "tag" || attr == "children" || attr == "cn" || attr == "html" || attr == "style" || typeof o[attr] == "function") continue;
if(attr=="cls"){
el.className = o["cls"];
}else{
if(useSet) el.setAttribute(attr, o[attr]);
else el[attr] = o[attr];
}
}
Ext.DomHelper.applyStyles(el, o.style);
var cn = o.children || o.cn;
if(cn){
createDom(cn, el);
} else if(o.html){
el.innerHTML = o.html;
}
}
if(parentNode){
parentNode.appendChild(el);
}
return el;
};
var ieTable = function(depth, s, h, e){
tempTableEl.innerHTML = [s, h, e].join('');
var i = -1, el = tempTableEl;
while(++i < depth){
el = el.firstChild;
}
return el;
};
// kill repeat to save bytes
var ts = '',
tbs = ts+'',
tbe = ''+te,
trs = tbs + '',
tre = '
'+tbe;
/**
* @ignore
* Nasty code for IE's broken table implementation
*/
var insertIntoTable = function(tag, where, el, html){
if(!tempTableEl){
tempTableEl = document.createElement('div');
}
var node;
var before = null;
if(tag == 'td'){
if(where == 'afterbegin' || where == 'beforeend'){ // INTO a TD
return;
}
if(where == 'beforebegin'){
before = el;
el = el.parentNode;
} else{
before = el.nextSibling;
el = el.parentNode;
}
node = ieTable(4, trs, html, tre);
}
else if(tag == 'tr'){
if(where == 'beforebegin'){
before = el;
el = el.parentNode;
node = ieTable(3, tbs, html, tbe);
} else if(where == 'afterend'){
before = el.nextSibling;
el = el.parentNode;
node = ieTable(3, tbs, html, tbe);
} else{ // INTO a TR
if(where == 'afterbegin'){
before = el.firstChild;
}
node = ieTable(4, trs, html, tre);
}
} else if(tag == 'tbody'){
if(where == 'beforebegin'){
before = el;
el = el.parentNode;
node = ieTable(2, ts, html, te);
} else if(where == 'afterend'){
before = el.nextSibling;
el = el.parentNode;
node = ieTable(2, ts, html, te);
} else{
if(where == 'afterbegin'){
before = el.firstChild;
}
node = ieTable(3, tbs, html, tbe);
}
} else{ // TABLE
if(where == 'beforebegin' || where == 'afterend'){ // OUTSIDE the table
return;
}
if(where == 'afterbegin'){
before = el.firstChild;
}
node = ieTable(2, ts, html, te);
}
el.insertBefore(node, before);
return node;
};
return {
/** True to force the use of DOM instead of html fragments @type Boolean */
useDom : false,
/**
* 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 eg "width:100px", or object in the form {width:"100px"}, or
* a function which returns such a specification.
*/
applyStyles : function(el, styles){
if(styles){
el = Ext.fly(el);
if(typeof styles == "string"){
var re = /\s?([a-z\-]*)\:\s?([^;]*);?/gi;
var matches;
while ((matches = re.exec(styles)) != null){
el.setStyle(matches[1], matches[2]);
}
}else if (typeof styles == "object"){
for (var style in styles){
el.setStyle(style, styles[style]);
}
}else if (typeof styles == "function"){
Ext.DomHelper.applyStyles(el, styles.call());
}
}
},
/**
* 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 fragmenet
* @return {HTMLElement} The new node
*/
insertHtml : function(where, el, html){
where = where.toLowerCase();
if(el.insertAdjacentHTML){
if(tableRe.test(el.tagName)){
var rs;
if(rs = insertIntoTable(el.tagName.toLowerCase(), where, el, html)){
return rs;
}
}
switch(where){
case "beforebegin":
el.insertAdjacentHTML('BeforeBegin', html);
return el.previousSibling;
case "afterbegin":
el.insertAdjacentHTML('AfterBegin', html);
return el.firstChild;
case "beforeend":
el.insertAdjacentHTML('BeforeEnd', html);
return el.lastChild;
case "afterend":
el.insertAdjacentHTML('AfterEnd', html);
return el.nextSibling;
}
throw 'Illegal insertion point -> "' + where + '"';
}
var range = el.ownerDocument.createRange();
var frag;
switch(where){
case "beforebegin":
range.setStartBefore(el);
frag = range.createContextualFragment(html);
el.parentNode.insertBefore(frag, el);
return el.previousSibling;
case "afterbegin":
if(el.firstChild){
range.setStartBefore(el.firstChild);
frag = range.createContextualFragment(html);
el.insertBefore(frag, el.firstChild);
return el.firstChild;
}else{
el.innerHTML = html;
return el.firstChild;
}
case "beforeend":
if(el.lastChild){
range.setStartAfter(el.lastChild);
frag = range.createContextualFragment(html);
el.appendChild(frag);
return el.lastChild;
}else{
el.innerHTML = html;
return el.lastChild;
}
case "afterend":
range.setStartAfter(el);
frag = range.createContextualFragment(html);
el.parentNode.insertBefore(frag, el.nextSibling);
return el.nextSibling;
}
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 this.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 this.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 this.doInsert(el, o, returnElement, "afterBegin", "firstChild");
},
// private
doInsert : function(el, o, returnElement, pos, sibling){
el = Ext.getDom(el);
var newNode;
if(this.useDom){
newNode = createDom(o, null);
(sibling === "firstChild" ? el : el.parentNode).insertBefore(newNode, sibling ? el[sibling] : el);
}else{
var html = createHtml(o);
newNode = this.insertHtml(pos, el, html);
}
return returnElement ? Ext.get(newNode, true) : newNode;
},
/**
* 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){
el = Ext.getDom(el);
var newNode;
if(this.useDom){
newNode = createDom(o, null);
el.appendChild(newNode);
}else{
var html = createHtml(o);
newNode = this.insertHtml("beforeEnd", el, html);
}
return returnElement ? Ext.get(newNode, true) : newNode;
},
/**
* 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, true) : el.firstChild;
},
/**
* Creates a new Ext.Template from the DOM object spec.
* @param {Object} o The DOM object spec (and children)
* @return {Ext.Template} The new template
*/
createTemplate : function(o){
var html = createHtml(o);
return new Ext.Template(html);
}
};
}();