MD Bookmarks: Add 'Open' command, to open in either the BMM or in new tabs

chrome/browser/resources/md_bookmarks/item.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 Polymer({
   is: 'bookmarks-item',
 
   behaviors: [
     bookmarks.StoreClient,
   ],
@@ skipping 19 matching lines @@
     },
 
     /** @private */
     mouseFocus_: {
       type: Boolean,
       reflectToAttribute: true,
     },
 
     /** @private */
     isFolder_: Boolean,
+
+    /** @private */
+    openItemUrl_: String,
   },
 
   observers: [
     'updateFavicon_(item_.url)',
   ],
 
   listeners: {
     'mousedown': 'onMousedown_',
     'blur': 'onItemBlur_',
     'click': 'onClick_',
@@ skipping 33 matching lines @@
       y: e.clientY,
     });
   },
 
   /**
    * @param {Event} e
    * @private
    */
   onMenuButtonClick_: function(e) {
     e.stopPropagation();
+    e.preventDefault();
     this.dispatch(bookmarks.actions.selectItem(
         this.itemId, false, false, this.getState()));
     this.fire('open-item-menu', {
       targetElement: e.target,
     });
   },
 
   /**
    * @param {Event} e
    * @private
    */
   onMenuButtonDblClick_: function(e) {
     e.stopPropagation();
   },
 
   /** @private */
   onItemIdChanged_: function() {
     // TODO(tsergeant): Add a histogram to measure whether this assertion fails
     // for real users.
     assert(this.getState().nodes[this.itemId]);
     this.updateFromStore();
   },
 
   /** @private */
   onItemChanged_: function() {
     this.isFolder_ = !this.item_.url;
+    if (this.item_.url)
+      this.openItemUrl_ = this.item_.url;
+    else
+      this.openItemUrl_ = 'chrome://bookmarks/?id=' + this.itemId;
   },
 
   /**
    * @private
    */
   onMousedown_: function() {
     this.mouseFocus_ = true;
   },
 
   /**
    * @private
    */
   onItemBlur_: function() {
     this.mouseFocus_ = false;
   },
 
   /**
-   * @param {Event} e
+   * @param {MouseEvent} e
    * @private
    */
   onClick_: function(e) {
     this.dispatch(bookmarks.actions.selectItem(
         this.itemId, e.ctrlKey, e.shiftKey, this.getState()));
     e.stopPropagation();
+    e.preventDefault();
   },
 
   /**
-   * @param {Event} e
+   * @param {MouseEvent} e
    * @private
    */
   onDblClick_: function(e) {
-    if (!this.item_.url) {
-      this.dispatch(
-          bookmarks.actions.selectFolder(this.item_.id, this.getState().nodes));
-    } else {
-      chrome.tabs.create({url: this.item_.url});
-    }
+    var commandManager = bookmarks.CommandManager.getInstance();
+    var itemSet = this.getState().selection.items;
+    if (commandManager.canExecute(Command.OPEN, itemSet))
+      commandManager.handle(Command.OPEN, itemSet);
   },
 
   /**
    * @param {string} url
    * @private
    */
   updateFavicon_: function(url) {
     this.$.icon.style.backgroundImage = cr.icon.getFavicon(url);
   },
 });