添加GBK导入的选项

social/social.js

@@ -124,16 +124,24 @@ $(function() {
                 acceptFiles.push(p.fileExtension);
             }
         });
-        menus = menus.concat([{
-            label: '导入本地文件',
-            click: function() {
+        
+        function importUseEncoding(encoding) {
+            return function() {
                 $('<input type="file" />')
                     .attr('accept', acceptFiles.join(','))
                     .on('change', function(e) {
                         e = e.originalEvent;
-                        minder.importFile(e.target.files[0]);
+                        minder.importFile(e.target.files[0], encoding);
                     }).click();
+            };
         }
+
+        menus = menus.concat([{
+            label: '导入...',
+            click: importUseEncoding('utf8')
+        }, {
+            label: '以 GBK 编码导入...',
+            click: importUseEncoding('gbk')
         }, {
             divider: true
         }]);

src/module/dropfile.js

@@ -34,7 +34,7 @@ KityMinder.registerModule('DropFile', function() {
         }
     }
 
-    function importMinderFile(minder, file) {
+    function importMinderFile(minder, file, encoding) {
         if (!file) return;
 
         var ext = /(.)\w+$/.exec(file.name);
@@ -48,11 +48,11 @@ KityMinder.registerModule('DropFile', function() {
         } else if ((/mmap/g).test(ext)) { // mindmanager zip
             importSync(minder, file, 'mindmanager');
         } else if ((/mm/g).test(ext)) { //freemind xml
-            importAsync(minder, file, 'freemind');
+            importAsync(minder, file, 'freemind', encoding);
         } else if (/km/.test(ext)) { // txt json
-            importAsync(minder, file, 'json');
+            importAsync(minder, file, 'json', encoding);
         } else if (/txt/.test(ext)) {
-            importAsync(minder, file, 'plain');
+            importAsync(minder, file, 'plain', encoding);
         } else {
             alert('不支持导入此类文件!');
         }
@@ -78,12 +78,12 @@ KityMinder.registerModule('DropFile', function() {
     }
 
     // 异步加载文件
-    function importAsync(minder, file, protocal) {
+    function importAsync(minder, file, protocal, encoding) {
         var reader = new FileReader();
-        reader.onload = function(e) {
+        reader.onload = function (e) {
             importSync(minder, e.target.result, protocal);
         };
-        reader.readAsText(file);
+        reader.readAsText(file, encoding || 'utf8');
     }
 
     function createDraft(minder) {
@@ -92,8 +92,8 @@ KityMinder.registerModule('DropFile', function() {
     }
 
     kity.extendClass(Minder, {
-        importFile: function(file) {
-            importMinderFile(this, file);
+        importFile: function(file, encoding) {
+            importMinderFile(this, file, encoding);
             return this;
         }
     });