/**
* jQuery json-viewer
* @author: Alexandre Bodelot <alexandre.bodelot@gmail.com>
* @link: https://github.com/abodelot/jquery.json-viewer
*/
(function($) {
/**
* Check if arg is either an array with at least 1 element, or a dict with at least 1 key
* @return boolean
*/
function isCollapsable(arg) {
return arg instanceof Object && Object.keys(arg).length > 0;
}
/**
* Check if a string represents a valid url
* @return boolean
*/
function isUrl(string) {
var urlRegexp = /^(https?:\/\/|ftps?:\/\/)?([a-z0-9%-]+\.){1,}([a-z0-9-]+)?(:(\d{1,5}))?(\/([a-z0-9\-._~:/?#[\]@!$&'()*+,;=%]+)?)?$/i;
return urlRegexp.test(string);
}
/**
* Transform a json object into html representation
* @return string
*/
function json2html(json, options) {
var html = '';
if (typeof json === 'string') {
// Escape tags and quotes
json = json
.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/'/g, ''')
.replace(/"/g, '"');
if (options.withLinks && isUrl(json)) {
html += '<a href="' + json + '" class="json-string" target="_blank">' + json + '</a>';
} else {
// Escape double quotes in the rendered non-URL string.
json = json.replace(/"/g, '\\"');
html += '<span class="json-string">"' + json + '"</span>';
}
} else if (typeof json === 'number') {
html += '<span class="json-literal">' + json + '</span>';
} else if (typeof json === 'boolean') {
html += '<span class="json-literal">' + json + '</span>';
} else if (json === null) {
html += '<span class="json-literal">null</span>';
} else if (json instanceof Array) {
if (json.length > 0) {
html += '[<ol class="json-array">';
for (var i = 0; i < json.length; ++i) {
html += '<li>';
// Add toggle button if item is collapsable
if (isCollapsable(json[i])) {
html += '<a href class="json-toggle"></a>';
}
html += json2html(json[i], options);
// Add comma if item is not last
if (i < json.length - 1) {
html += ',';
}
html += '</li>';
}
html += '</ol>]';
} else {
html += '[]';
}
} else if (typeof json === 'object') {
var keyCount = Object.keys(json).length;
if (keyCount > 0) {
html += '{<ul class="json-dict">';
for (var key in json) {
if (Object.prototype.hasOwnProperty.call(json, key)) {
html += '<li>';
var keyRepr = options.withQuotes ?
'<span class="json-string">"' + key + '"</span>' : key;
// Add toggle button if item is collapsable
if (isCollapsable(json[key])) {
html += '<a href class="json-toggle">' + keyRepr + '</a>';
} else {
html += keyRepr;
}
html += ': ' + json2html(json[key], options);
// Add comma if item is not last
if (--keyCount > 0) {
html += ',';
}
html += '</li>';
}
}
html += '</ul>}';
} else {
html += '{}';
}
}
return html;
}
/**
* jQuery plugin method
* @param json: a javascript object
* @param options: an optional options hash
*/
$.fn.jsonViewer = function(json, options) {
// Merge user options with default options
options = Object.assign({}, {
collapsed: false,
rootCollapsable: true,
withQuotes: false,
withLinks: true
}, options);
// jQuery chaining
return this.each(function() {
// Transform to HTML
var html = json2html(json, options);
if (options.rootCollapsable && isCollapsable(json)) {
html = '<a href class="json-toggle"></a>' + html;
}
// Insert HTML in target DOM element
$(this).html(html);
$(this).addClass('json-document');
// Bind click on toggle buttons
$(this).off('click');
$(this).on('click', 'a.json-toggle', function() {
var target = $(this).toggleClass('collapsed').siblings('ul.json-dict, ol.json-array');
target.toggle();
if (target.is(':visible')) {
target.siblings('.json-placeholder').remove();
} else {
var count = target.children('li').length;
var placeholder = count + (count > 1 ? ' items' : ' item');
target.after('<a href class="json-placeholder">' + placeholder + '</a>');
}
return false;
});
// Simulate click on toggle button when placeholder is clicked
$(this).on('click', 'a.json-placeholder', function() {
$(this).siblings('a.json-toggle').click();
return false;
});
if (options.collapsed == true) {
// Trigger click to collapse all nodes
$(this).find('a.json-toggle').click();
}
});
};
})(jQuery);