增加上下文菜单是否阻止默认绘制上下文菜单逻辑

src/components/context-menu/context-menu.tsx

@@ -92,6 +92,14 @@ export default class ContextMenu extends Vue {
      */
     @Prop()
     public menus?: any[]
+    /**
+     * 是否阻止默认绘制上下文菜单
+     *
+     * @type {any}
+     * @memberof ContextMenu
+     */
+    @Prop({default:false})
+    public isBlocked?:any;
 
     /**
      * 显示右键菜单
@@ -195,7 +203,10 @@ export default class ContextMenu extends Vue {
         if (contextRef) {
             contextRef.oncontextmenu = (event: MouseEvent) => {
                 event.preventDefault();
+                if(!this.isBlocked){
                     this.showContextMenu(event.clientX, event.clientY);
+                }
+                this.$emit("showContext",event);
             };
         }
     }