chrome/browser/ui/views/toolbar/extension_toolbar_menu_view.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_VIEWS_TOOLBAR_EXTENSION_TOOLBAR_MENU_VIEW_H_
   6 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_EXTENSION_TOOLBAR_MENU_VIEW_H_
   7
   8 #include "base/memory/weak_ptr.h"
   9 #include "base/scoped_observer.h"
  10 #include "chrome/browser/ui/views/toolbar/browser_actions_container_observer.h"
  11 #include "ui/views/view.h"
  12
  13 class Browser;
  14 class BrowserActionsContainer;
  15 class WrenchMenu;
  16
  17 // ExtensionToolbarMenuView is the view containing the extension actions that
  18 // overflowed from the BrowserActionsContainer, and is contained in and owned by
  19 // the wrench menu.
  20 // In the event that the WrenchMenu was opened for an Extension Action drag-and-
  21 // drop, this will also close the menu upon completion.
  22 class ExtensionToolbarMenuView : public views::View,
  23                                  public BrowserActionsContainerObserver {
  24  public:
  25   ExtensionToolbarMenuView(Browser* browser, WrenchMenu* wrench_menu);
  26   ~ExtensionToolbarMenuView() override;
  27
  28   // Returns whether the wrench menu should show this view. This is true when
  29   // either |container_| has icons to display or the menu was opened for a drag-
  30   // and-drop operation.
  31   bool ShouldShow();
  32
  33   // views::View:
  34   gfx::Size GetPreferredSize() const override;
  35   int GetHeightForWidth(int width) const override;
  36   void Layout() override;
  37
  38  private:
  39   // BrowserActionsContainerObserver:
  40   void OnBrowserActionDragDone() override;
  41
  42   // Closes the |wrench_menu_|.
  43   void CloseWrenchMenu();
  44
  45   // Returns the padding before the BrowserActionsContainer in the menu.
  46   int start_padding() const;
  47
  48   // The associated browser.
  49   Browser* browser_;
  50
  51   // The WrenchMenu, which may need to be closed after a drag-and-drop.
  52   WrenchMenu* wrench_menu_;
  53
  54   // The overflow BrowserActionsContainer which is nested in this view.
  55   BrowserActionsContainer* container_;
  56
  57   ScopedObserver<BrowserActionsContainer, BrowserActionsContainerObserver>
  58       browser_actions_container_observer_;
  59
  60   base::WeakPtrFactory<ExtensionToolbarMenuView> weak_factory_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(ExtensionToolbarMenuView);
  63 };
  64
  65 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_EXTENSION_TOOLBAR_MENU_VIEW_H_