by zhanyi

src/adapter/contextmenu.js

+KM.registerUI( 'contextmenu', function () {
+    var me = this;
+    var $menu = $.kmuidropmenu({
+        click:function(e,v){
+            me.execCommand(v);
+            this.hide();
+        }
+    });
+    me.$container.append($menu);
+    me.on('contextmenu',function(e){
+        var items = me.getContextmenu();
+        var data = [];
+        utils.each(items,function(i,item){
+            if(me.queryCommandState(item.cmdName)!=-1){
+                data.push({
+                    label:item.label,
+                    value:item.cmdName
+                })
+            }
+        });
+        if(data.length){
+            var offset = e.getPosition();
+
+            $menu.kmui().setData({
+                data:data
+            }).position({
+                    left: offset.x,
+                    top: offset.y
+                }).show();
+            e.preventDefault()
+        }
+
+    });
+    me.on('click',function(){
+        $menu.kmui().hide();
+    });
+
+    me.on('beforemousedown',function(e){
+        var isRightMB;
+
+
+        if ("which" in e.originEvent)  // Gecko (Firefox), WebKit (Safari/Chrome) & Opera
+            isRightMB = e.originEvent.which == 3;
+        else if ("button" in e.originEvent)  // IE, Opera
+            isRightMB = e.originEvent.button == 2;
+
+        if(isRightMB){
+
+            e.stopPropagationImmediately();
+
+        }
+    })
+} );
+