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/*
html
Extracts a HTML string from DOM nodes. Was created to get around the issue of not being able to exclude the content
of nodes with the 'data-include' attribute. DO NOT replace with functions such as innerHTML as it will break a
number of microformat include patterns.
Copyright (C) 2010 - 2015 Glenn Jones. All Rights Reserved.
MIT License: https://raw.github.com/glennjones/microformat-node/master/license.txt
Dependencies utilities.js, domutils.js
*/
var Modules = (function (modules) {
modules.html = {
// elements which are self-closing
selfClosingElt: ['area', 'base', 'br', 'col', 'hr', 'img', 'input', 'link', 'meta', 'param', 'command', 'keygen', 'source'],
/**
* parse the html string from DOM Node
*
* @param {DOM Node} node
* @return {String}
*/
parse: function( node ){
var out = '',
j = 0;
// we do not want the outer container
if(node.childNodes && node.childNodes.length > 0){
for (j = 0; j < node.childNodes.length; j++) {
var text = this.walkTreeForHtml( node.childNodes[j] );
if(text !== undefined){
out += text;
}
}
}
return out;
},
/**
* walks the DOM tree parsing the html string from the nodes
*
* @param {DOM Document} doc
* @param {DOM Node} node
* @return {String}
*/
walkTreeForHtml: function( node ) {
var out = '',
j = 0;
// if node is a text node get its text
if(node.nodeType && node.nodeType === 3){
out += modules.domUtils.getElementText( node );
}
// exclude text which has been added with include pattern -
if(node.nodeType && node.nodeType === 1 && modules.domUtils.hasAttribute(node, 'data-include') === false){
// begin tag
out += '<' + node.tagName.toLowerCase();
// add attributes
var attrs = modules.domUtils.getOrderedAttributes(node);
for (j = 0; j < attrs.length; j++) {
out += ' ' + attrs[j].name + '=' + '"' + attrs[j].value + '"';
}
if(this.selfClosingElt.indexOf(node.tagName.toLowerCase()) === -1){
out += '>';
}
// get the text of the child nodes
if(node.childNodes && node.childNodes.length > 0){
for (j = 0; j < node.childNodes.length; j++) {
var text = this.walkTreeForHtml( node.childNodes[j] );
if(text !== undefined){
out += text;
}
}
}
// end tag
if(this.selfClosingElt.indexOf(node.tagName.toLowerCase()) > -1){
out += ' />';
}else{
out += '</' + node.tagName.toLowerCase() + '>';
}
}
return (out === '')? undefined : out;
}
};
return modules;
} (Modules || {}));
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