lix-website/themes/lix/assets/bootstrap/node_modules/dom-serialize/index.js
2024-04-26 22:49:34 -06:00

231 lines
5.5 KiB
JavaScript

/**
* Module dependencies.
*/
var extend = require('extend');
var encode = require('ent/encode');
var CustomEvent = require('custom-event');
var voidElements = require('void-elements');
/**
* Module exports.
*/
exports = module.exports = serialize;
exports.serializeElement = serializeElement;
exports.serializeAttribute = serializeAttribute;
exports.serializeText = serializeText;
exports.serializeComment = serializeComment;
exports.serializeDocument = serializeDocument;
exports.serializeDoctype = serializeDoctype;
exports.serializeDocumentFragment = serializeDocumentFragment;
exports.serializeNodeList = serializeNodeList;
/**
* Serializes any DOM node. Returns a string.
*
* @param {Node} node - DOM Node to serialize
* @param {String} [context] - optional arbitrary "context" string to use (useful for event listeners)
* @param {Function} [fn] - optional callback function to use in the "serialize" event for this call
* @param {EventTarget} [eventTarget] - optional EventTarget instance to emit the "serialize" event on (defaults to `node`)
* return {String}
* @public
*/
function serialize (node, context, fn, eventTarget) {
if (!node) return '';
if ('function' === typeof context) {
fn = context;
context = null;
}
if (!context) context = null;
var rtn;
var nodeType = node.nodeType;
if (!nodeType && 'number' === typeof node.length) {
// assume it's a NodeList or Array of Nodes
rtn = exports.serializeNodeList(node, context, fn);
} else {
if ('function' === typeof fn) {
// one-time "serialize" event listener
node.addEventListener('serialize', fn, false);
}
// emit a custom "serialize" event on `node`, in case there
// are event listeners for custom serialization of this node
var e = new CustomEvent('serialize', {
bubbles: true,
cancelable: true,
detail: {
serialize: null,
context: context
}
});
e.serializeTarget = node;
var target = eventTarget || node;
var cancelled = !target.dispatchEvent(e);
// `e.detail.serialize` can be set to a:
// String - returned directly
// Node - goes through serializer logic instead of `node`
// Anything else - get Stringified first, and then returned directly
var s = e.detail.serialize;
if (s != null) {
if ('string' === typeof s) {
rtn = s;
} else if ('number' === typeof s.nodeType) {
// make it go through the serialization logic
rtn = serialize(s, context, null, target);
} else {
rtn = String(s);
}
} else if (!cancelled) {
// default serialization logic
switch (nodeType) {
case 1 /* element */:
rtn = exports.serializeElement(node, context, eventTarget);
break;
case 2 /* attribute */:
rtn = exports.serializeAttribute(node);
break;
case 3 /* text */:
rtn = exports.serializeText(node);
break;
case 8 /* comment */:
rtn = exports.serializeComment(node);
break;
case 9 /* document */:
rtn = exports.serializeDocument(node, context, eventTarget);
break;
case 10 /* doctype */:
rtn = exports.serializeDoctype(node);
break;
case 11 /* document fragment */:
rtn = exports.serializeDocumentFragment(node, context, eventTarget);
break;
}
}
if ('function' === typeof fn) {
node.removeEventListener('serialize', fn, false);
}
}
return rtn || '';
}
/**
* Serialize an Attribute node.
*/
function serializeAttribute (node, opts) {
return node.name + '="' + encode(node.value, extend({
named: true
}, opts)) + '"';
}
/**
* Serialize a DOM element.
*/
function serializeElement (node, context, eventTarget) {
var c, i, l;
var name = node.nodeName.toLowerCase();
// opening tag
var r = '<' + name;
// attributes
for (i = 0, c = node.attributes, l = c.length; i < l; i++) {
r += ' ' + exports.serializeAttribute(c[i]);
}
r += '>';
// child nodes
r += exports.serializeNodeList(node.childNodes, context, null, eventTarget);
// closing tag, only for non-void elements
if (!voidElements[name]) {
r += '</' + name + '>';
}
return r;
}
/**
* Serialize a text node.
*/
function serializeText (node, opts) {
return encode(node.nodeValue, extend({
named: true,
special: { '<': true, '>': true, '&': true }
}, opts));
}
/**
* Serialize a comment node.
*/
function serializeComment (node) {
return '<!--' + node.nodeValue + '-->';
}
/**
* Serialize a Document node.
*/
function serializeDocument (node, context, eventTarget) {
return exports.serializeNodeList(node.childNodes, context, null, eventTarget);
}
/**
* Serialize a DOCTYPE node.
* See: http://stackoverflow.com/a/10162353
*/
function serializeDoctype (node) {
var r = '<!DOCTYPE ' + node.name;
if (node.publicId) {
r += ' PUBLIC "' + node.publicId + '"';
}
if (!node.publicId && node.systemId) {
r += ' SYSTEM';
}
if (node.systemId) {
r += ' "' + node.systemId + '"';
}
r += '>';
return r;
}
/**
* Serialize a DocumentFragment instance.
*/
function serializeDocumentFragment (node, context, eventTarget) {
return exports.serializeNodeList(node.childNodes, context, null, eventTarget);
}
/**
* Serialize a NodeList/Array of nodes.
*/
function serializeNodeList (list, context, fn, eventTarget) {
var r = '';
for (var i = 0, l = list.length; i < l; i++) {
r += serialize(list[i], context, fn, eventTarget);
}
return r;
}