Add callback and marks options

dist/jquery.jsonview.js

@@ -1,7 +1,7 @@
 
 /*!
-jQuery JSONView.
-Licensed under the MIT License.
+ jQuery JSONView.
+ Licensed under the MIT License.
  */
 (function(jQuery) {
   var $, Collapser, JSONFormatter, JSONView;
@@ -133,21 +133,35 @@ Licensed under the MIT License.
   })();
   (typeof module !== "undefined" && module !== null) && (module.exports = JSONFormatter);
   Collapser = (function() {
-    function Collapser() {}
+    function Collapser() {
+    }
+
+    Collapser.marks = {
+      '+': '+',
+      '-': '-'
+    };
 
     Collapser.bindEvent = function(item, options) {
+      $.extend(this.marks, options.marks);
+      if (options['on_expand']) {
+        this.on_expand = options['on_expand'];
+      }
+      if (options['on_collapse']) {
+        this.on_collapse = options['on_collapse'];
+      }
+
       var collapser;
       collapser = document.createElement('div');
       collapser.className = 'collapser';
-      collapser.innerHTML = options.collapsed ? '+' : '-';
+      collapser.innerHTML = options.collapsed ? this.marks['+'] : this.marks['-'];
       collapser.addEventListener('click', (function(_this) {
         return function(event) {
           return _this.toggle(event.target, options);
         };
       })(this));
       item.insertBefore(collapser, item.firstChild);
       if (options.collapsed) {
-        return this.collapse(collapser);
+        return this.collapse(collapser, true);
       }
     };
 
@@ -157,24 +171,30 @@ Licensed under the MIT License.
       if (target.style.display === '') {
         return;
       }
+      if ('function' === typeof this.on_expand) {
+        this.on_expand(collapser);
+      }
       ellipsis = target.parentNode.getElementsByClassName('ellipsis')[0];
       target.parentNode.removeChild(ellipsis);
       target.style.display = '';
-      return collapser.innerHTML = '-';
+      return collapser.innerHTML = this.marks['-'];
     };
 
-    Collapser.collapse = function(collapser) {
+    Collapser.collapse = function(collapser, no_callback) {
       var ellipsis, target;
       target = this.collapseTarget(collapser);
       if (target.style.display === 'none') {
         return;
       }
+      if (!no_callback && 'function' === typeof this.on_collapse) {
+        this.on_collapse(collapser);
+      }
       target.style.display = 'none';
       ellipsis = document.createElement('span');
       ellipsis.className = 'ellipsis';
       ellipsis.innerHTML = ' … ';
       target.parentNode.insertBefore(ellipsis, target);
-      return collapser.innerHTML = '+';
+      return collapser.innerHTML = this.marks['+'];
     };
 
     Collapser.toggle = function(collapser, options) {
@@ -212,12 +232,12 @@ Licensed under the MIT License.
   $ = jQuery;
   JSONView = {
     collapse: function(el) {
-      if (el.innerHTML === '-') {
+      if (el.innerHTML === Collapser.marks['-']) {
         return Collapser.collapse(el);
       }
     },
     expand: function(el) {
-      if (el.innerHTML === '+') {
+      if (el.innerHTML === Collapser.marks['+']) {
         return Collapser.expand(el);
       }
     },
@@ -250,7 +270,9 @@ Licensed under the MIT License.
       defaultOptions = {
         collapsed: false,
         nl2br: false,
-        recursive_collapser: false
+        recursive_collapser: false,
+        on_collapse: null,
+        on_expand: null
       };
       options = $.extend(defaultOptions, options);
       formatter = new JSONFormatter({