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+/**
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+ * jQuery json-viewer
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+ * @author: Alexandre Bodelot <alexandre.bodelot@gmail.com>
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+ */
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+(function($){
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+
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+ /**
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+ * Check if arg is either an array with at least 1 element, or a dict with at least 1 key
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+ * @return boolean
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+ */
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+ function isCollapsable(arg) {
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+ return arg instanceof Object && Object.keys(arg).length > 0;
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+ }
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+
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+ /**
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+ * Check if a string represents a valid url
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+ * @return boolean
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+ */
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+ function isUrl(string) {
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+ var regexp = /^(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/;
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+ return regexp.test(string);
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+ }
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+
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+ /**
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+ * Transform a json object into html representation
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+ * @return string
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+ */
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+ function json2html(json, options) {
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+ var html = '';
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+ if (typeof json === 'string') {
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+ /* Escape tags */
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+ json = json.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>');
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+ if (isUrl(json))
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+ html += '<a href="' + json + '" class="json-string">' + json + '</a>';
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+ else
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+ html += '<span class="json-string">"' + json + '"</span>';
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+ }
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+ else if (typeof json === 'number') {
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+ html += '<span class="json-literal">' + json + '</span>';
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+ }
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+ else if (typeof json === 'boolean') {
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+ html += '<span class="json-literal">' + json + '</span>';
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+ }
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+ else if (json === null) {
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+ html += '<span class="json-literal">null</span>';
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+ }
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+ else if (json instanceof Array) {
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+ if (json.length > 0) {
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+ html += '[<ol class="json-array">';
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+ for (var i = 0; i < json.length; ++i) {
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+ html += '<li>';
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+ /* Add toggle button if item is collapsable */
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+ if (isCollapsable(json[i])) {
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+ html += '<a href class="json-toggle"></a>';
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+ }
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+ html += json2html(json[i], options);
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+ /* Add comma if item is not last */
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+ if (i < json.length - 1) {
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+ html += ',';
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+ }
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+ html += '</li>';
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+ }
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+ html += '</ol>]';
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+ }
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+ else {
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+ html += '[]';
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+ }
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+ }
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+ else if (typeof json === 'object') {
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+ var key_count = Object.keys(json).length;
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+ if (key_count > 0) {
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+ html += '{<ul class="json-dict">';
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+ for (var key in json) {
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+ if (json.hasOwnProperty(key)) {
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+ html += '<li>';
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+ var keyRepr = options.withQuotes ?
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+ '<span class="json-string">"' + key + '"</span>' : key;
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+ /* Add toggle button if item is collapsable */
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+ if (isCollapsable(json[key])) {
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+ html += '<a href class="json-toggle">' + keyRepr + '</a>';
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+ }
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+ else {
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+ html += keyRepr;
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+ }
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+ html += ': ' + json2html(json[key], options);
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+ /* Add comma if item is not last */
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+ if (--key_count > 0)
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+ html += ',';
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+ html += '</li>';
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+ }
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+ }
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+ html += '</ul>}';
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+ }
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+ else {
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+ html += '{}';
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+ }
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+ }
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+ return html;
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+ }
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+
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+ /**
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+ * jQuery plugin method
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+ * @param json: a javascript object
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+ * @param options: an optional options hash
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+ */
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+ $.fn.jsonViewer = function(json, options) {
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+ options = options || {};
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+
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+ /* jQuery chaining */
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+ return this.each(function() {
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+
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+ /* Transform to HTML */
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+ var html = json2html(json, options);
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+ if (isCollapsable(json))
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+ html = '<a href class="json-toggle"></a>' + html;
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+
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+ /* Insert HTML in target DOM element */
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+ $(this).html(html);
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+
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+ /* Bind click on toggle buttons */
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+ $(this).off('click');
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+ $(this).on('click', 'a.json-toggle', function() {
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+ var target = $(this).toggleClass('collapsed').siblings('ul.json-dict, ol.json-array');
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+ target.toggle();
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+ if (target.is(':visible')) {
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+ target.siblings('.json-placeholder').remove();
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+ }
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+ else {
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+ var count = target.children('li').length;
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+ var placeholder = count + (count > 1 ? ' items' : ' item');
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+ target.after('<a href class="json-placeholder">' + placeholder + '</a>');
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+ }
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+ return false;
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+ });
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+
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+ /* Simulate click on toggle button when placeholder is clicked */
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+ $(this).on('click', 'a.json-placeholder', function() {
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+ $(this).siblings('a.json-toggle').click();
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+ return false;
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+ });
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+
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+ if (options.collapsed == true) {
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+ /* Trigger click to collapse all nodes */
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+ $(this).find('a.json-toggle').click();
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+ }
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+ });
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+ };
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+})(jQuery);
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Lucas de Souza