documentHistory wip: toolbar

[fnpeditor.git] / modules / documentHistory / documentHistory.js

diff --git a/modules/documentHistory/documentHistory.js b/modules/documentHistory/documentHistory.js
index d5f20d4..2c3a3b6 100644 (file)
--- a/modules/documentHistory/documentHistory.js
+++ b/modules/documentHistory/documentHistory.js
@@ -32,30 +32,52 @@ return function(sandbox) {
         });\r
     }\r
     \r
+    var toggleButton = function(btn, toggle) {\r
+        dom.find('button.'+btn).toggleClass('disabled', !toggle);\r
+    }\r
+    \r
     var historyItems = {\r
         _itemsById: {},\r
         _selected: [],\r
         select: function(item) {\r
             if(this._selected.length < 2) {\r
                 this._selected.push(item.version);\r
-                if(this._selected.length === 2)\r
-                    toggleItemViews(false);\r
+                this._updateUI();\r
                 return true;\r
             }\r
             return false;\r
         },\r
         unselect: function(item) {\r
             this._selected = _.without(this._selected, item.version);\r
-            if(this._selected.length < 2)\r
-                toggleItemViews(true);\r
+            this._updateUI();\r
         },\r
         add: function(item) {\r
             this._itemsById[item.version] = item;\r
         },\r
         selected: function(item) {\r
             return _.contains(this._selected, item.version);\r
+        },\r
+        _updateUI: function() {\r
+            var len = this._selected.length;\r
+            if(len === 0) {\r
+                toggleButton('compare', false);\r
+                toggleButton('show2', false);\r
+                toggleButton('restore', false);\r
+            }\r
+            if(len === 1) {\r
+                toggleButton('compare', false);\r
+                toggleButton('show2', true);\r
+                toggleButton('restore', true);\r
+            }\r
+            if(len === 2) {\r
+                toggleItemViews(false);\r
+                toggleButton('compare', true);\r
+                toggleButton('show2', false);\r
+                toggleButton('restore', false);\r
+            }\r
         }\r
     };\r
+    historyItems._updateUI();\r
     \r
     var itemView = function(item) {\r
         this.item = item;\r