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

chrome/browser/resources/md_bookmarks/item.js

Index: chrome/browser/resources/md_bookmarks/item.js
diff --git a/chrome/browser/resources/md_bookmarks/item.js b/chrome/browser/resources/md_bookmarks/item.js
index c0be4847f2849e7449f9dea0103cdba3555ad008..1a0b8bcc2a47e644ff8188d8e26a957126e185c8 100644
--- a/chrome/browser/resources/md_bookmarks/item.js
+++ b/chrome/browser/resources/md_bookmarks/item.js
@@ -37,7 +37,10 @@ Polymer({
 
   listeners: {
     'click': 'onClick_',
+    'auxclick': 'onMiddleClick_',
     'dblclick': 'onDblClick_',
+    'mousedown': 'cancelMiddleMouseBehavior_',
+    'mouseup': 'cancelMiddleMouseBehavior_',
     'contextmenu': 'onContextMenu_',
   },
 
@@ -58,16 +61,23 @@ Polymer({
     return this;
   },
 
+  /**
+   * Change selection so that only this item is selected.
+   * @private
+   */
+  selectItem_: function() {
+    this.dispatch(bookmarks.actions.selectItem(
+        this.itemId, false, false, this.getState()));
+  },
+
   /**
    * @param {Event} e
    * @private
    */
   onContextMenu_: function(e) {
     e.preventDefault();
-    if (!this.isSelectedItem_) {
-      this.dispatch(bookmarks.actions.selectItem(
-          this.itemId, false, false, this.getState()));
-    }
+    if (!this.isSelectedItem_)
+      this.selectItem_();
     this.fire('open-item-menu', {
       x: e.clientX,
       y: e.clientY,
@@ -80,8 +90,7 @@ Polymer({
    */
   onMenuButtonClick_: function(e) {
     e.stopPropagation();
-    this.dispatch(bookmarks.actions.selectItem(
-        this.itemId, false, false, this.getState()));
+    this.selectItem_();
     this.fire('open-item-menu', {
       targetElement: e.target,
     });
@@ -109,28 +118,63 @@ Polymer({
   },
 
   /**
-   * @param {Event} e
+   * @param {MouseEvent} e
    * @private
    */
   onClick_: function(e) {
-    this.dispatch(bookmarks.actions.selectItem(
-        this.itemId, e.ctrlKey, e.shiftKey, this.getState()));
+    if (e.detail == 1) {
+      this.dispatch(bookmarks.actions.selectItem(
+          this.itemId, e.ctrlKey, e.shiftKey, this.getState()));
+    }
     e.stopPropagation();
   },
 
   /**
-   * @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));
+  onMiddleClick_: function(e) {
+    if (e.button != 1)
+      return;
+
+    this.selectItem_();
+    if (this.isFolder_)
+      return;
+
+    var commandManager = bookmarks.CommandManager.getInstance();
+    var itemSet = this.getState().selection.items;
+    if (e.shiftKey) {
+      if (commandManager.canExecute(Command.OPEN, itemSet))
+        commandManager.handle(Command.OPEN, itemSet)
     } else {
-      chrome.tabs.create({url: this.item_.url});
+      if (commandManager.canExecute(Command.OPEN_NEW_TAB, itemSet))
+        commandManager.handle(Command.OPEN_NEW_TAB, itemSet)
+    }
+  },
+
+  /**
+   * Prevent default middle-mouse behavior. On Windows, this prevents autoscroll
+   * (during mousedown), and on Linux this prevents paste (during mouseup).
+   * @param {MouseEvent} e
+   * @private
+   */
+  cancelMiddleMouseBehavior_: function(e) {
+    if (e.button == 1) {
+      e.preventDefault();
     }
   },
 
+  /**
+   * @param {MouseEvent} e
+   * @private
+   */
+  onDblClick_: function(e) {
+    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