草稿箱大小限制；文件编辑状态调整

social/draftmanager.js

 function DraftManager( minder ) {
     var current = null,
         localStorage = window.localStorage,
-        drafts;
+        drafts,
+        MAX_SIZE = 15;
 
     init();
 
@@ -32,7 +33,7 @@ function DraftManager( minder ) {
     }
 
     function store() {
-        localStorage.setItem( 'drafts', JSON.stringify( drafts ) );
+        localStorage.setItem( 'drafts', JSON.stringify( drafts.slice( 0, MAX_SIZE ) ) );
     }
 
     function create( path ) {
@@ -84,6 +85,7 @@ function DraftManager( minder ) {
             current.update = new Date();
             store();
         }
+        return current;
     }
 
     function sync() {
@@ -92,7 +94,7 @@ function DraftManager( minder ) {
     }
 
     function list() {
-        return drafts.slice();
+        return drafts.slice( 0, 15 );
     }
 
     function remove( remove_index ) {

social/social.js

@@ -328,7 +328,9 @@ $( function () {
             draft = draftManager.openByPath( path );
             setRemotePath( path, !draft || draft.sync );
             if ( draft ) {
+                watchingChanges = false;
                 draftManager.load();
+                watchingChanges = true;
             } else {
                 loadRemote();
             }
@@ -338,12 +340,9 @@ $( function () {
     // 新建文件
     function newFile() {
         setRemotePath( null, true );
-        watchingChanges = false;
-        minder.importData( '新建脑图', 'plain' );
         draftManager.create();
-        watchingChanges = true;
+        minder.importData( '新建脑图', 'plain' );
         minder.execCommand( 'camera', minder.getRoot() );
-        $user_btn.text( '<新建脑图>' );
     }
 
     function generateRemotePath() {
@@ -471,14 +470,10 @@ $( function () {
     function watchChanges() {
         minder.on( 'contentchange', function () {
             if ( !watchingChanges ) return;
-            var currentData = minder.exportData( 'json' );
-            if ( watchChanges.lastData != currentData ) {
-                if ( currentAccount ) {
-                    $save_btn.disabled( false ).text( '保存' );
-                    watchChanges.lastData = currentData;
-                    setRemotePath( remotePath, false );
-                }
-                draftManager.save();
+            var current = draftManager.save();
+            if ( currentAccount ) {
+                $save_btn.disabled( current.sync ).text( '保存' );
+                setRemotePath( remotePath, current.sync );
             }
         } );
     }

src/module/view.js

@@ -89,6 +89,7 @@ KityMinder.registerModule( 'View', function () {
             } else {
                 minder.rollbackStatus();
             }
+            this.setContentChanged( false );
 
         },
         queryState: function ( minder ) {