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/**
* ElementUtils.js
*
* Copyright, Moxiecode Systems AB
* Released under LGPL License.
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/**
* Utility class for various element specific functions.
*
* @private
*/
define("tinymce/dom/ElementUtils", [
"tinymce/dom/BookmarkManager",
"tinymce/util/Tools"
], function(BookmarkManager, Tools) {
var each = Tools.each;
function ElementUtils(dom) {
/**
* Compares two nodes and checks if it's attributes and styles matches.
* This doesn't compare classes as items since their order is significant.
*
* @method compare
* @param {Node} node1 First node to compare with.
* @param {Node} node2 Second node to compare with.
* @return {boolean} True/false if the nodes are the same or not.
*/
this.compare = function(node1, node2) {
// Not the same name
if (node1.nodeName != node2.nodeName) {
return false;
}
/**
* Returns all the nodes attributes excluding internal ones, styles and classes.
*
* @private
* @param {Node} node Node to get attributes from.
* @return {Object} Name/value object with attributes and attribute values.
*/
function getAttribs(node) {
var attribs = {};
each(dom.getAttribs(node), function(attr) {
var name = attr.nodeName.toLowerCase();
// Don't compare internal attributes or style
if (name.indexOf('_') !== 0 && name !== 'style' && name !== 'data-mce-style') {
attribs[name] = dom.getAttrib(node, name);
}
});
return attribs;
}
/**
* Compares two objects checks if it's key + value exists in the other one.
*
* @private
* @param {Object} obj1 First object to compare.
* @param {Object} obj2 Second object to compare.
* @return {boolean} True/false if the objects matches or not.
*/
function compareObjects(obj1, obj2) {
var value, name;
for (name in obj1) {
// Obj1 has item obj2 doesn't have
if (obj1.hasOwnProperty(name)) {
value = obj2[name];
// Obj2 doesn't have obj1 item
if (typeof value == "undefined") {
return false;
}
// Obj2 item has a different value
if (obj1[name] != value) {
return false;
}
// Delete similar value
delete obj2[name];
}
}
// Check if obj 2 has something obj 1 doesn't have
for (name in obj2) {
// Obj2 has item obj1 doesn't have
if (obj2.hasOwnProperty(name)) {
return false;
}
}
return true;
}
// Attribs are not the same
if (!compareObjects(getAttribs(node1), getAttribs(node2))) {
return false;
}
// Styles are not the same
if (!compareObjects(dom.parseStyle(dom.getAttrib(node1, 'style')), dom.parseStyle(dom.getAttrib(node2, 'style')))) {
return false;
}
return !BookmarkManager.isBookmarkNode(node1) && !BookmarkManager.isBookmarkNode(node2);
};
}
return ElementUtils;
});