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File: public/js/tinymce/src/core/src/main/js/html/Node.js

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/** * Node.js * * Released under LGPL License. * Copyright (c) 1999-2017 Ephox Corp. All rights reserved * * License: http://www.tinymce.com/license * Contributing: http://www.tinymce.com/contributing */ /** * This class is a minimalistic implementation of a DOM like node used by the DomParser class. * * @example * var node = new tinymce.html.Node('strong', 1); * someRoot.append(node); * * @class tinymce.html.Node * @version 3.4 */ define( 'tinymce.core.html.Node', [ ], function () { var whiteSpaceRegExp = /^[ \t\r\n]*$/; var typeLookup = { '#text': 3, '#comment': 8, '#cdata': 4, '#pi': 7, '#doctype': 10, '#document-fragment': 11 }; // Walks the tree left/right var walk = function (node, rootNode, prev) { var sibling, parent, startName = prev ? 'lastChild' : 'firstChild', siblingName = prev ? 'prev' : 'next'; // Walk into nodes if it has a start if (node[startName]) { return node[startName]; } // Return the sibling if it has one if (node !== rootNode) { sibling = node[siblingName]; if (sibling) { return sibling; } // Walk up the parents to look for siblings for (parent = node.parent; parent && parent !== rootNode; parent = parent.parent) { sibling = parent[siblingName]; if (sibling) { return sibling; } } } }; /** * Constructs a new Node instance. * * @constructor * @method Node * @param {String} name Name of the node type. * @param {Number} type Numeric type representing the node. */ var Node = function (name, type) { this.name = name; this.type = type; if (type === 1) { this.attributes = []; this.attributes.map = {}; } }; Node.prototype = { /** * Replaces the current node with the specified one. * * @example * someNode.replace(someNewNode); * * @method replace * @param {tinymce.html.Node} node Node to replace the current node with. * @return {tinymce.html.Node} The old node that got replaced. */ replace: function (node) { var self = this; if (node.parent) { node.remove(); } self.insert(node, self); self.remove(); return self; }, /** * Gets/sets or removes an attribute by name. * * @example * someNode.attr("name", "value"); // Sets an attribute * console.log(someNode.attr("name")); // Gets an attribute * someNode.attr("name", null); // Removes an attribute * * @method attr * @param {String} name Attribute name to set or get. * @param {String} value Optional value to set. * @return {String/tinymce.html.Node} String or undefined on a get operation or the current node on a set operation. */ attr: function (name, value) { var self = this, attrs, i, undef; if (typeof name !== "string") { for (i in name) { self.attr(i, name[i]); } return self; } if ((attrs = self.attributes)) { if (value !== undef) { // Remove attribute if (value === null) { if (name in attrs.map) { delete attrs.map[name]; i = attrs.length; while (i--) { if (attrs[i].name === name) { attrs = attrs.splice(i, 1); return self; } } } return self; } // Set attribute if (name in attrs.map) { // Set attribute i = attrs.length; while (i--) { if (attrs[i].name === name) { attrs[i].value = value; break; } } } else { attrs.push({ name: name, value: value }); } attrs.map[name] = value; return self; } return attrs.map[name]; } }, /** * Does a shallow clones the node into a new node. It will also exclude id attributes since * there should only be one id per document. * * @example * var clonedNode = node.clone(); * * @method clone * @return {tinymce.html.Node} New copy of the original node. */ clone: function () { var self = this, clone = new Node(self.name, self.type), i, l, selfAttrs, selfAttr, cloneAttrs; // Clone element attributes if ((selfAttrs = self.attributes)) { cloneAttrs = []; cloneAttrs.map = {}; for (i = 0, l = selfAttrs.length; i < l; i++) { selfAttr = selfAttrs[i]; // Clone everything except id if (selfAttr.name !== 'id') { cloneAttrs[cloneAttrs.length] = { name: selfAttr.name, value: selfAttr.value }; cloneAttrs.map[selfAttr.name] = selfAttr.value; } } clone.attributes = cloneAttrs; } clone.value = self.value; clone.shortEnded = self.shortEnded; return clone; }, /** * Wraps the node in in another node. * * @example * node.wrap(wrapperNode); * * @method wrap */ wrap: function (wrapper) { var self = this; self.parent.insert(wrapper, self); wrapper.append(self); return self; }, /** * Unwraps the node in other words it removes the node but keeps the children. * * @example * node.unwrap(); * * @method unwrap */ unwrap: function () { var self = this, node, next; for (node = self.firstChild; node;) { next = node.next; self.insert(node, self, true); node = next; } self.remove(); }, /** * Removes the node from it's parent. * * @example * node.remove(); * * @method remove * @return {tinymce.html.Node} Current node that got removed. */ remove: function () { var self = this, parent = self.parent, next = self.next, prev = self.prev; if (parent) { if (parent.firstChild === self) { parent.firstChild = next; if (next) { next.prev = null; } } else { prev.next = next; } if (parent.lastChild === self) { parent.lastChild = prev; if (prev) { prev.next = null; } } else { next.prev = prev; } self.parent = self.next = self.prev = null; } return self; }, /** * Appends a new node as a child of the current node. * * @example * node.append(someNode); * * @method append * @param {tinymce.html.Node} node Node to append as a child of the current one. * @return {tinymce.html.Node} The node that got appended. */ append: function (node) { var self = this, last; if (node.parent) { node.remove(); } last = self.lastChild; if (last) { last.next = node; node.prev = last; self.lastChild = node; } else { self.lastChild = self.firstChild = node; } node.parent = self; return node; }, /** * Inserts a node at a specific position as a child of the current node. * * @example * parentNode.insert(newChildNode, oldChildNode); * * @method insert * @param {tinymce.html.Node} node Node to insert as a child of the current node. * @param {tinymce.html.Node} refNode Reference node to set node before/after. * @param {Boolean} before Optional state to insert the node before the reference node. * @return {tinymce.html.Node} The node that got inserted. */ insert: function (node, refNode, before) { var parent; if (node.parent) { node.remove(); } parent = refNode.parent || this; if (before) { if (refNode === parent.firstChild) { parent.firstChild = node; } else { refNode.prev.next = node; } node.prev = refNode.prev; node.next = refNode; refNode.prev = node; } else { if (refNode === parent.lastChild) { parent.lastChild = node; } else { refNode.next.prev = node; } node.next = refNode.next; node.prev = refNode; refNode.next = node; } node.parent = parent; return node; }, /** * Get all children by name. * * @method getAll * @param {String} name Name of the child nodes to collect. * @return {Array} Array with child nodes matchin the specified name. */ getAll: function (name) { var self = this, node, collection = []; for (node = self.firstChild; node; node = walk(node, self)) { if (node.name === name) { collection.push(node); } } return collection; }, /** * Removes all children of the current node. * * @method empty * @return {tinymce.html.Node} The current node that got cleared. */ empty: function () { var self = this, nodes, i, node; // Remove all children if (self.firstChild) { nodes = []; // Collect the children for (node = self.firstChild; node; node = walk(node, self)) { nodes.push(node); } // Remove the children i = nodes.length; while (i--) { node = nodes[i]; node.parent = node.firstChild = node.lastChild = node.next = node.prev = null; } } self.firstChild = self.lastChild = null; return self; }, /** * Returns true/false if the node is to be considered empty or not. * * @example * node.isEmpty({img: true}); * @method isEmpty * @param {Object} elements Name/value object with elements that are automatically treated as non empty elements. * @param {Object} whitespace Name/value object with elements that are automatically treated whitespace preservables. * @param {function} predicate Optional predicate that gets called after the other rules determine that the node is empty. Should return true if the node is a content node. * @return {Boolean} true/false if the node is empty or not. */ isEmpty: function (elements, whitespace, predicate) { var self = this, node = self.firstChild, i, name; whitespace = whitespace || {}; if (node) { do { if (node.type === 1) { // Ignore bogus elements if (node.attributes.map['data-mce-bogus']) { continue; } // Keep empty elements like <img /> if (elements[node.name]) { return false; } // Keep bookmark nodes and name attribute like <a name="1"></a> i = node.attributes.length; while (i--) { name = node.attributes[i].name; if (name === "name" || name.indexOf('data-mce-bookmark') === 0) { return false; } } } // Keep comments if (node.type === 8) { return false; } // Keep non whitespace text nodes if (node.type === 3 && !whiteSpaceRegExp.test(node.value)) { return false; } // Keep whitespace preserve elements if (node.type === 3 && node.parent && whitespace[node.parent.name] && whiteSpaceRegExp.test(node.value)) { return false; } // Predicate tells that the node is contents if (predicate && predicate(node)) { return false; } } while ((node = walk(node, self))); } return true; }, /** * Walks to the next or previous node and returns that node or null if it wasn't found. * * @method walk * @param {Boolean} prev Optional previous node state defaults to false. * @return {tinymce.html.Node} Node that is next to or previous of the current node. */ walk: function (prev) { return walk(this, null, prev); } }; /** * Creates a node of a specific type. * * @static * @method create * @param {String} name Name of the node type to create for example "b" or "#text". * @param {Object} attrs Name/value collection of attributes that will be applied to elements. */ Node.create = function (name, attrs) { var node, attrName; // Create node node = new Node(name, typeLookup[name] || 1); // Add attributes if needed if (attrs) { for (attrName in attrs) { node.attr(attrName, attrs[attrName]); } } return node; }; return Node; } );