save to

src/adapter/saveto.js

-KM.registerUI('saveto', function( name ) {
+KM.registerUI( 'saveto', function ( name ) {
 
     var me = this,
-        label = me.getLang('tooltips.' + name),
+        label = me.getLang( 'tooltips.' + name ),
         options = {
             label: label,
             title: label,
@@ -14,32 +14,38 @@ KM.registerUI('saveto', function( name ) {
         $combox = null,
         comboboxWidget = null;
 
+    var downloadLink = document.createElement( 'a' );
 
-    utils.each(KityMinder.getAllRegisteredProtocals(),function(k){
-
-        options.value.push(k);
-        options.items.push(k);
-        options.autowidthitem.push($.wordCountAdaptive( k ) );
-    });
+    utils.each( KityMinder.getAllRegisteredProtocals(), function ( k ) {
+        var p = KityMinder.findProtocal( k );
+        var text = p.fileDescription + '（' + p.fileExtension + '）';
+        options.value.push( k );
+        options.items.push( text );
+        options.autowidthitem.push( $.wordCountAdaptive( text ), true );
+    } );
 
 
     //实例化
-    $combox =  $.kmuibuttoncombobox(options).css('zIndex',me.getOptions('zIndex') + 1);
-    comboboxWidget =  $combox.kmui();
-
-    comboboxWidget.on('comboboxselect', function( evt, res ){
-        alert(me.exportData(res.value));
-    }).on("beforeshow", function(){
-        if( $combox.parent().length === 0 ) {
-            $combox.appendTo(  me.$container.find('.kmui-dialog-container') );
+    $combox = $.kmuibuttoncombobox( options ).css( 'zIndex', me.getOptions( 'zIndex' ) + 1 );
+    comboboxWidget = $combox.kmui();
+
+    comboboxWidget.on( 'comboboxselect', function ( evt, res ) {
+        var data = me.exportData( res.value );
+        var p = KityMinder.findProtocal( res.value );
+        var a = downloadLink;
+        a.setAttribute( 'download', 'MyMind' + p.fileExtension );
+        a.setAttribute( 'href', 'data:text/plain; utf-8,' + encodeURI( data ) );
+        a.dispatchEvent( new MouseEvent( 'click' ) );
+    } ).on( "beforeshow", function () {
+        if ( $combox.parent().length === 0 ) {
+            $combox.appendTo( me.$container.find( '.kmui-dialog-container' ) );
         }
-    }).on('aftercomboboxselect',function(){
-            this.setLabelWithDefaultValue()
-        });
-
+    } ).on( 'aftercomboboxselect', function () {
+        this.setLabelWithDefaultValue();
+    } );
 
 
-    return comboboxWidget.button().addClass('kmui-combobox');
 
-});
+    return comboboxWidget.button().addClass( 'kmui-combobox' );
 
+} );
\ No newline at end of file

src/protocal/json.js

@@ -6,6 +6,8 @@ KityMinder.registerProtocal( 'json', function () {
 		return value;
 	}
 	return {
+		fileDescription: 'KityMinder',
+		fileExtension: '.km',
 		encode: function ( json ) {
 			return JSON.stringify( json, filter );
 		},

src/protocal/plain.js

@@ -85,6 +85,8 @@ KityMinder.registerProtocal( "plain", function () {
 		return !!lastResult;
 	}
 	return {
+		fileDescription: '大纲文本',
+		fileExtension: '.txt',
 		encode: function ( json ) {
 			return encode( json, 0 );
 		},