Alternate NTP: Limit width of tab titles in recent tabs menu

chrome/browser/ui/cocoa/menu_controller.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_MENU_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_MENU_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_nsobject.h"
+#include "base/string16.h"
 
 namespace ui {
 class MenuModel;
 }
 
 // A controller for the cross-platform menu model. The menu that's created
 // has the tag and represented object set for each menu item. The object is a
 // NSValue holding a pointer to the model for that level of the menu (to
 // allow for hierarchical menus). The tag is the index into that model for
 // that particular item. It is important that the model outlives this object
 // as it only maintains weak references.
 @interface MenuController : NSObject<NSMenuDelegate> {
  @protected
   ui::MenuModel* model_;  // weak
   scoped_nsobject<NSMenu> menu_;
   BOOL useWithPopUpButtonCell_;  // If YES, 0th item is blank
   BOOL isMenuOpen_;
 }
 
 @property(nonatomic, assign) ui::MenuModel* model;
 // Note that changing this will have no effect if you use
 // |-initWithModel:useWithPopUpButtonCell:| or after the first call to |-menu|.
 @property(nonatomic) BOOL useWithPopUpButtonCell;
 
++ (string16)elideMenuTitle:(const string16&)title
+                   toWidth:(int)width;
+
 // NIB-based initializer. This does not create a menu. Clients can set the
 // properties of the object and the menu will be created upon the first call to
 // |-menu|. Note that the menu will be immutable after creation.
 - (id)init;
 
 // Builds a NSMenu from the pre-built model (must not be nil). Changes made
 // to the contents of the model after calling this will not be noticed. If
 // the menu will be displayed by a NSPopUpButtonCell, it needs to be of a
 // slightly different form (0th item is empty). Note this attribute of the menu
 // cannot be changed after it has been created.
@@ skipping 19 matching lines @@
 - (BOOL)validateUserInterfaceItem:(id<NSValidatedUserInterfaceItem>)item;
 @end
 
 // Protected methods that subclassers can override.
 @interface MenuController (Protected)
 - (void)addItemToMenu:(NSMenu*)menu
               atIndex:(NSInteger)index
             fromModel:(ui::MenuModel*)model
            modelIndex:(int)modelIndex;
 - (NSMenu*)menuFromModel:(ui::MenuModel*)model;
+// Returns the maximum width for the menu item. Returns -1 to indicate
+// that there's no maximum width.
+- (int)maxWidthForMenuModel:(ui::MenuModel*)model
+                 modelIndex:(int)modelIndex;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_MENU_CONTROLLER_H_