820 lines
24 KiB
JavaScript
820 lines
24 KiB
JavaScript
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/**
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* JSON Tree library (a part of jsonTreeViewer)
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* http://github.com/summerstyle/jsonTreeViewer
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*
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* Copyright 2017 Vera Lobacheva (http://iamvera.com)
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* Released under the MIT license (LICENSE.txt)
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*/
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var jsonTree = (function() {
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/* ---------- Utilities ---------- */
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var utils = {
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/*
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* Returns js-"class" of value
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*
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* @param val {any type} - value
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* @returns {string} - for example, "[object Function]"
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*/
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getClass : function(val) {
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return Object.prototype.toString.call(val);
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},
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/**
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* Checks for a type of value (for valid JSON data types).
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* In other cases - throws an exception
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*
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* @param val {any type} - the value for new node
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* @returns {string} ("object" | "array" | "null" | "boolean" | "number" | "string")
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*/
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getType : function(val) {
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if (val === null) {
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return 'null';
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}
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switch (typeof val) {
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case 'number':
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return 'number';
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case 'string':
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return 'string';
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case 'boolean':
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return 'boolean';
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}
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switch(utils.getClass(val)) {
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case '[object Array]':
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return 'array';
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case '[object Object]':
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return 'object';
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}
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throw new Error('Bad type: ' + utils.getClass(val));
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},
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/**
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* Applies for each item of list some function
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* and checks for last element of the list
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*
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* @param obj {Object | Array} - a list or a dict with child nodes
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* @param func {Function} - the function for each item
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*/
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forEachNode : function(obj, func) {
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var type = utils.getType(obj),
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isLast;
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switch (type) {
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case 'array':
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isLast = obj.length - 1;
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obj.forEach(function(item, i) {
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func(i, item, i === isLast);
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});
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break;
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case 'object':
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var keys = Object.keys(obj).sort();
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isLast = keys.length - 1;
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keys.forEach(function(item, i) {
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func(item, obj[item], i === isLast);
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});
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break;
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}
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},
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/**
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* Implements the kind of an inheritance by
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* using parent prototype and
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* creating intermediate constructor
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*
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* @param Child {Function} - a child constructor
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* @param Parent {Function} - a parent constructor
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*/
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inherits : (function() {
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var F = function() {};
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return function(Child, Parent) {
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F.prototype = Parent.prototype;
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Child.prototype = new F();
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Child.prototype.constructor = Child;
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};
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})(),
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/*
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* Checks for a valid type of root node*
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*
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* @param {any type} jsonObj - a value for root node
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* @returns {boolean} - true for an object or an array, false otherwise
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*/
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isValidRoot : function(jsonObj) {
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switch (utils.getType(jsonObj)) {
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case 'object':
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case 'array':
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return true;
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default:
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return false;
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}
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},
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/**
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* Extends some object
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*/
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extend : function(targetObj, sourceObj) {
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for (var prop in sourceObj) {
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if (sourceObj.hasOwnProperty(prop)) {
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targetObj[prop] = sourceObj[prop];
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}
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}
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}
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};
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/* ---------- Node constructors ---------- */
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/**
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* The factory for creating nodes of defined type.
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*
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* ~~~ Node ~~~ is a structure element of an onject or an array
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* with own label (a key of an object or an index of an array)
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* and value of any json data type. The root object or array
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* is a node without label.
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* {...
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* [+] "label": value,
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* ...}
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*
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* Markup:
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* <li class="jsontree_node [jsontree_node_expanded]">
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* <span class="jsontree_label-wrapper">
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* <span class="jsontree_label">
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* <span class="jsontree_expand-button" />
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* "label"
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* </span>
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* :
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* </span>
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* <(div|span) class="jsontree_value jsontree_value_(object|array|boolean|null|number|string)">
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* ...
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* </(div|span)>
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* </li>
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*
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* @param label {string} - key name
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* @param val {Object | Array | string | number | boolean | null} - a value of node
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* @param isLast {boolean} - true if node is last in list of siblings
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*
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* @return {Node}
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*/
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function Node(label, val, isLast) {
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var nodeType = utils.getType(val);
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if (nodeType in Node.CONSTRUCTORS) {
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return new Node.CONSTRUCTORS[nodeType](label, val, isLast);
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} else {
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throw new Error('Bad type: ' + utils.getClass(val));
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}
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}
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Node.CONSTRUCTORS = {
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'boolean' : NodeBoolean,
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'number' : NodeNumber,
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'string' : NodeString,
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'null' : NodeNull,
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'object' : NodeObject,
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'array' : NodeArray
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};
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/*
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* The constructor for simple types (string, number, boolean, null)
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* {...
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* [+] "label": value,
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* ...}
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* value = string || number || boolean || null
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*
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* Markup:
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* <li class="jsontree_node">
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* <span class="jsontree_label-wrapper">
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* <span class="jsontree_label">"age"</span>
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* :
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* </span>
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* <span class="jsontree_value jsontree_value_(number|boolean|string|null)">25</span>
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* ,
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* </li>
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*
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* @abstract
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* @param label {string} - key name
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* @param val {string | number | boolean | null} - a value of simple types
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* @param isLast {boolean} - true if node is last in list of parent childNodes
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*/
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function _NodeSimple(label, val, isLast) {
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if (this.constructor === _NodeSimple) {
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throw new Error('This is abstract class');
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}
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var self = this,
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el = document.createElement('li'),
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labelEl,
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template = function(label, val) {
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var str = '\
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<span class="jsontree_label-wrapper">\
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<span class="jsontree_label">"' +
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label +
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'"</span> : \
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</span>\
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<span class="jsontree_value-wrapper">\
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<span class="jsontree_value jsontree_value_' + self.type + '">' +
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val +
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'</span>' +
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(!isLast ? ',' : '') +
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'</span>';
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return str;
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};
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self.label = label;
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self.isComplex = false;
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el.classList.add('jsontree_node');
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el.innerHTML = template(label, val);
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self.el = el;
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labelEl = el.querySelector('.jsontree_label');
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labelEl.addEventListener('click', function(e) {
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if (e.altKey) {
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self.toggleMarked();
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return;
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}
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if (e.shiftKey) {
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document.getSelection().removeAllRanges();
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alert(self.getJSONPath());
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return;
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}
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}, false);
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}
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_NodeSimple.prototype = {
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constructor : _NodeSimple,
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/**
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* Mark node
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*/
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mark : function() {
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this.el.classList.add('jsontree_node_marked');
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},
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/**
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* Unmark node
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*/
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unmark : function() {
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this.el.classList.remove('jsontree_node_marked');
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},
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/**
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* Mark or unmark node
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*/
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toggleMarked : function() {
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this.el.classList.toggle('jsontree_node_marked');
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},
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/**
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* Expands parent node of this node
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*
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* @param isRecursive {boolean} - if true, expands all parent nodes
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* (from node to root)
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*/
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expandParent : function(isRecursive) {
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if (!this.parent) {
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return;
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}
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this.parent.expand();
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this.parent.expandParent(isRecursive);
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},
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/**
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* Returns JSON-path of this
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*
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* @param isInDotNotation {boolean} - kind of notation for returned json-path
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* (by default, in bracket notation)
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* @returns {string}
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*/
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getJSONPath : function(isInDotNotation) {
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if (this.isRoot) {
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return "$";
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}
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var currentPath;
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if (this.parent.type === 'array') {
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currentPath = "[" + this.label + "]";
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} else {
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currentPath = isInDotNotation ? "." + this.label : "['" + this.label + "']";
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}
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return this.parent.getJSONPath(isInDotNotation) + currentPath;
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}
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};
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/*
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* The constructor for boolean values
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* {...
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* [+] "label": boolean,
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* ...}
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* boolean = true || false
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*
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* @constructor
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* @param label {string} - key name
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* @param val {boolean} - value of boolean type, true or false
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* @param isLast {boolean} - true if node is last in list of parent childNodes
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*/
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function NodeBoolean(label, val, isLast) {
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this.type = "boolean";
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_NodeSimple.call(this, label, val, isLast);
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}
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utils.inherits(NodeBoolean,_NodeSimple);
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/*
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* The constructor for number values
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* {...
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* [+] "label": number,
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* ...}
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* number = 123
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*
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* @constructor
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* @param label {string} - key name
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* @param val {number} - value of number type, for example 123
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* @param isLast {boolean} - true if node is last in list of parent childNodes
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*/
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function NodeNumber(label, val, isLast) {
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this.type = "number";
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_NodeSimple.call(this, label, val, isLast);
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}
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utils.inherits(NodeNumber,_NodeSimple);
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/*
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* The constructor for string values
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* {...
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* [+] "label": string,
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* ...}
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* string = "abc"
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*
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* @constructor
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* @param label {string} - key name
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* @param val {string} - value of string type, for example "abc"
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* @param isLast {boolean} - true if node is last in list of parent childNodes
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*/
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function NodeString(label, val, isLast) {
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this.type = "string";
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_NodeSimple.call(this, label, '"' + val + '"', isLast);
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}
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utils.inherits(NodeString,_NodeSimple);
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/*
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* The constructor for null values
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* {...
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* [+] "label": null,
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* ...}
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*
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* @constructor
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* @param label {string} - key name
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* @param val {null} - value (only null)
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* @param isLast {boolean} - true if node is last in list of parent childNodes
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*/
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function NodeNull(label, val, isLast) {
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this.type = "null";
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_NodeSimple.call(this, label, val, isLast);
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}
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utils.inherits(NodeNull,_NodeSimple);
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/*
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* The constructor for complex types (object, array)
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* {...
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* [+] "label": value,
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* ...}
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* value = object || array
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*
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* Markup:
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* <li class="jsontree_node jsontree_node_(object|array) [expanded]">
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* <span class="jsontree_label-wrapper">
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* <span class="jsontree_label">
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* <span class="jsontree_expand-button" />
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* "label"
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* </span>
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* :
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* </span>
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* <div class="jsontree_value">
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* <b>{</b>
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* <ul class="jsontree_child-nodes" />
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* <b>}</b>
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* ,
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* </div>
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* </li>
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*
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* @abstract
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* @param label {string} - key name
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* @param val {Object | Array} - a value of complex types, object or array
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* @param isLast {boolean} - true if node is last in list of parent childNodes
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*/
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function _NodeComplex(label, val, isLast) {
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if (this.constructor === _NodeComplex) {
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throw new Error('This is abstract class');
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}
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var self = this,
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el = document.createElement('li'),
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template = function(label, sym) {
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var comma = (!isLast) ? ',' : '',
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str = '\
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<div class="jsontree_value-wrapper">\
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<div class="jsontree_value jsontree_value_' + self.type + '">\
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<b>' + sym[0] + '</b>\
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<span class="jsontree_show-more">…</span>\
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<ul class="jsontree_child-nodes"></ul>\
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<b>' + sym[1] + '</b>' +
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'</div>' + comma +
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'</div>';
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if (label !== null) {
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str = '\
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<span class="jsontree_label-wrapper">\
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<span class="jsontree_label">' +
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'<span class="jsontree_expand-button"></span>' +
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'"' + label +
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'"</span> : \
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</span>' + str;
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}
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return str;
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},
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childNodesUl,
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labelEl,
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moreContentEl,
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childNodes = [];
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self.label = label;
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self.isComplex = true;
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el.classList.add('jsontree_node');
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el.classList.add('jsontree_node_complex');
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el.innerHTML = template(label, self.sym);
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childNodesUl = el.querySelector('.jsontree_child-nodes');
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if (label !== null) {
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labelEl = el.querySelector('.jsontree_label');
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moreContentEl = el.querySelector('.jsontree_show-more');
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||
|
labelEl.addEventListener('click', function(e) {
|
||
|
if (e.altKey) {
|
||
|
self.toggleMarked();
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (e.shiftKey) {
|
||
|
document.getSelection().removeAllRanges();
|
||
|
alert(self.getJSONPath());
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
self.toggle(e.ctrlKey || e.metaKey);
|
||
|
}, false);
|
||
|
|
||
|
moreContentEl.addEventListener('click', function(e) {
|
||
|
self.toggle(e.ctrlKey || e.metaKey);
|
||
|
}, false);
|
||
|
|
||
|
self.isRoot = false;
|
||
|
} else {
|
||
|
self.isRoot = true;
|
||
|
self.parent = null;
|
||
|
|
||
|
el.classList.add('jsontree_node_expanded');
|
||
|
}
|
||
|
|
||
|
self.el = el;
|
||
|
self.childNodes = childNodes;
|
||
|
self.childNodesUl = childNodesUl;
|
||
|
|
||
|
utils.forEachNode(val, function(label, node, isLast) {
|
||
|
self.addChild(new Node(label, node, isLast));
|
||
|
});
|
||
|
|
||
|
self.isEmpty = !Boolean(childNodes.length);
|
||
|
if (self.isEmpty) {
|
||
|
el.classList.add('jsontree_node_empty');
|
||
|
}
|
||
|
}
|
||
|
|
||
|
utils.inherits(_NodeComplex, _NodeSimple);
|
||
|
|
||
|
utils.extend(_NodeComplex.prototype, {
|
||
|
constructor : _NodeComplex,
|
||
|
|
||
|
/*
|
||
|
* Add child node to list of child nodes
|
||
|
*
|
||
|
* @param child {Node} - child node
|
||
|
*/
|
||
|
addChild : function(child) {
|
||
|
this.childNodes.push(child);
|
||
|
this.childNodesUl.appendChild(child.el);
|
||
|
child.parent = this;
|
||
|
},
|
||
|
|
||
|
/*
|
||
|
* Expands this list of node child nodes
|
||
|
*
|
||
|
* @param isRecursive {boolean} - if true, expands all child nodes
|
||
|
*/
|
||
|
expand : function(isRecursive){
|
||
|
if (this.isEmpty) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (!this.isRoot) {
|
||
|
this.el.classList.add('jsontree_node_expanded');
|
||
|
}
|
||
|
|
||
|
if (isRecursive) {
|
||
|
this.childNodes.forEach(function(item, i) {
|
||
|
if (item.isComplex) {
|
||
|
item.expand(isRecursive);
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
},
|
||
|
|
||
|
/*
|
||
|
* Collapses this list of node child nodes
|
||
|
*
|
||
|
* @param isRecursive {boolean} - if true, collapses all child nodes
|
||
|
*/
|
||
|
collapse : function(isRecursive) {
|
||
|
if (this.isEmpty) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (!this.isRoot) {
|
||
|
this.el.classList.remove('jsontree_node_expanded');
|
||
|
}
|
||
|
|
||
|
if (isRecursive) {
|
||
|
this.childNodes.forEach(function(item, i) {
|
||
|
if (item.isComplex) {
|
||
|
item.collapse(isRecursive);
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
},
|
||
|
|
||
|
/*
|
||
|
* Expands collapsed or collapses expanded node
|
||
|
*
|
||
|
* @param {boolean} isRecursive - Expand all child nodes if this node is expanded
|
||
|
* and collapse it otherwise
|
||
|
*/
|
||
|
toggle : function(isRecursive) {
|
||
|
if (this.isEmpty) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
this.el.classList.toggle('jsontree_node_expanded');
|
||
|
|
||
|
if (isRecursive) {
|
||
|
var isExpanded = this.el.classList.contains('jsontree_node_expanded');
|
||
|
|
||
|
this.childNodes.forEach(function(item, i) {
|
||
|
if (item.isComplex) {
|
||
|
item[isExpanded ? 'expand' : 'collapse'](isRecursive);
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
},
|
||
|
|
||
|
/**
|
||
|
* Find child nodes that match some conditions and handle it
|
||
|
*
|
||
|
* @param {Function} matcher
|
||
|
* @param {Function} handler
|
||
|
* @param {boolean} isRecursive
|
||
|
*/
|
||
|
findChildren : function(matcher, handler, isRecursive) {
|
||
|
if (this.isEmpty) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
this.childNodes.forEach(function(item, i) {
|
||
|
if (matcher(item)) {
|
||
|
handler(item);
|
||
|
}
|
||
|
|
||
|
if (item.isComplex && isRecursive) {
|
||
|
item.findChildren(matcher, handler, isRecursive);
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
});
|
||
|
|
||
|
|
||
|
/*
|
||
|
* The constructor for object values
|
||
|
* {...
|
||
|
* [+] "label": object,
|
||
|
* ...}
|
||
|
* object = {"abc": "def"}
|
||
|
*
|
||
|
* @constructor
|
||
|
* @param label {string} - key name
|
||
|
* @param val {Object} - value of object type, {"abc": "def"}
|
||
|
* @param isLast {boolean} - true if node is last in list of siblings
|
||
|
*/
|
||
|
function NodeObject(label, val, isLast) {
|
||
|
this.sym = ['{', '}'];
|
||
|
this.type = "object";
|
||
|
|
||
|
_NodeComplex.call(this, label, val, isLast);
|
||
|
}
|
||
|
utils.inherits(NodeObject,_NodeComplex);
|
||
|
|
||
|
|
||
|
/*
|
||
|
* The constructor for array values
|
||
|
* {...
|
||
|
* [+] "label": array,
|
||
|
* ...}
|
||
|
* array = [1,2,3]
|
||
|
*
|
||
|
* @constructor
|
||
|
* @param label {string} - key name
|
||
|
* @param val {Array} - value of array type, [1,2,3]
|
||
|
* @param isLast {boolean} - true if node is last in list of siblings
|
||
|
*/
|
||
|
function NodeArray(label, val, isLast) {
|
||
|
this.sym = ['[', ']'];
|
||
|
this.type = "array";
|
||
|
|
||
|
_NodeComplex.call(this, label, val, isLast);
|
||
|
}
|
||
|
utils.inherits(NodeArray, _NodeComplex);
|
||
|
|
||
|
|
||
|
/* ---------- The tree constructor ---------- */
|
||
|
|
||
|
/*
|
||
|
* The constructor for json tree.
|
||
|
* It contains only one Node (Array or Object), without property name.
|
||
|
* CSS-styles of .tree define main tree styles like font-family,
|
||
|
* font-size and own margins.
|
||
|
*
|
||
|
* Markup:
|
||
|
* <ul class="jsontree_tree clearfix">
|
||
|
* {Node}
|
||
|
* </ul>
|
||
|
*
|
||
|
* @constructor
|
||
|
* @param jsonObj {Object | Array} - data for tree
|
||
|
* @param domEl {DOMElement} - DOM-element, wrapper for tree
|
||
|
*/
|
||
|
function Tree(jsonObj, domEl) {
|
||
|
this.wrapper = document.createElement('ul');
|
||
|
this.wrapper.className = 'jsontree_tree clearfix';
|
||
|
|
||
|
this.rootNode = null;
|
||
|
|
||
|
this.sourceJSONObj = jsonObj;
|
||
|
|
||
|
this.loadData(jsonObj);
|
||
|
this.appendTo(domEl);
|
||
|
}
|
||
|
|
||
|
Tree.prototype = {
|
||
|
constructor : Tree,
|
||
|
|
||
|
/**
|
||
|
* Fill new data in current json tree
|
||
|
*
|
||
|
* @param {Object | Array} jsonObj - json-data
|
||
|
*/
|
||
|
loadData : function(jsonObj) {
|
||
|
if (!utils.isValidRoot(jsonObj)) {
|
||
|
alert('The root should be an object or an array');
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
this.sourceJSONObj = jsonObj;
|
||
|
|
||
|
this.rootNode = new Node(null, jsonObj, 'last');
|
||
|
this.wrapper.innerHTML = '';
|
||
|
this.wrapper.appendChild(this.rootNode.el);
|
||
|
},
|
||
|
|
||
|
/**
|
||
|
* Appends tree to DOM-element (or move it to new place)
|
||
|
*
|
||
|
* @param {DOMElement} domEl
|
||
|
*/
|
||
|
appendTo : function(domEl) {
|
||
|
domEl.appendChild(this.wrapper);
|
||
|
},
|
||
|
|
||
|
/**
|
||
|
* Expands all tree nodes (objects or arrays) recursively
|
||
|
*
|
||
|
* @param {Function} filterFunc - 'true' if this node should be expanded
|
||
|
*/
|
||
|
expand : function(filterFunc) {
|
||
|
if (this.rootNode.isComplex) {
|
||
|
if (typeof filterFunc == 'function') {
|
||
|
this.rootNode.childNodes.forEach(function(item, i) {
|
||
|
if (item.isComplex && filterFunc(item)) {
|
||
|
item.expand();
|
||
|
}
|
||
|
});
|
||
|
} else {
|
||
|
this.rootNode.expand('recursive');
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
|
||
|
/**
|
||
|
* Collapses all tree nodes (objects or arrays) recursively
|
||
|
*/
|
||
|
collapse : function() {
|
||
|
if (typeof this.rootNode.collapse === 'function') {
|
||
|
this.rootNode.collapse('recursive');
|
||
|
}
|
||
|
},
|
||
|
|
||
|
/**
|
||
|
* Returns the source json-string (pretty-printed)
|
||
|
*
|
||
|
* @param {boolean} isPrettyPrinted - 'true' for pretty-printed string
|
||
|
* @returns {string} - for exemple, '{"a":2,"b":3}'
|
||
|
*/
|
||
|
toSourceJSON : function(isPrettyPrinted) {
|
||
|
if (!isPrettyPrinted) {
|
||
|
return JSON.stringify(this.sourceJSONObj);
|
||
|
}
|
||
|
|
||
|
var DELIMETER = "[%^$#$%^%]",
|
||
|
jsonStr = JSON.stringify(this.sourceJSONObj, null, DELIMETER);
|
||
|
|
||
|
jsonStr = jsonStr.split("\n").join("<br />");
|
||
|
jsonStr = jsonStr.split(DELIMETER).join(" ");
|
||
|
|
||
|
return jsonStr;
|
||
|
},
|
||
|
|
||
|
/**
|
||
|
* Find all nodes that match some conditions and handle it
|
||
|
*/
|
||
|
findAndHandle : function(matcher, handler) {
|
||
|
this.rootNode.findChildren(matcher, handler, 'isRecursive');
|
||
|
},
|
||
|
|
||
|
/**
|
||
|
* Unmark all nodes
|
||
|
*/
|
||
|
unmarkAll : function() {
|
||
|
this.rootNode.findChildren(function(node) {
|
||
|
return true;
|
||
|
}, function(node) {
|
||
|
node.unmark();
|
||
|
}, 'isRecursive');
|
||
|
}
|
||
|
};
|
||
|
|
||
|
|
||
|
/* ---------- Public methods ---------- */
|
||
|
return {
|
||
|
/**
|
||
|
* Creates new tree by data and appends it to the DOM-element
|
||
|
*
|
||
|
* @param jsonObj {Object | Array} - json-data
|
||
|
* @param domEl {DOMElement} - the wrapper element
|
||
|
* @returns {Tree}
|
||
|
*/
|
||
|
create : function(jsonObj, domEl) {
|
||
|
return new Tree(jsonObj, domEl);
|
||
|
}
|
||
|
};
|
||
|
})();
|