chrome/browser/ui/views/bookmarks/bookmark_bar_instructions_view.h

   1 // Copyright (c) 2012 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_BOOKMARKS_BOOKMARK_BAR_INSTRUCTIONS_VIEW_H_
   6 #define CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_BAR_INSTRUCTIONS_VIEW_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "ui/views/context_menu_controller.h"
  11 #include "ui/views/controls/link_listener.h"
  12 #include "ui/views/view.h"
  13
  14 class BookmarkBarInstructionsDelegate;
  15
  16 namespace views {
  17 class Label;
  18 class Link;
  19 }
  20
  21 // BookmarkBarInstructionsView is a child of the bookmark bar that is visible
  22 // when the user has no bookmarks on the bookmark bar.
  23 // BookmarkBarInstructionsView shows a description of the bookmarks bar along
  24 // with a link to import bookmarks. Clicking the link results in notifying the
  25 // delegate.
  26 class BookmarkBarInstructionsView : public views::View,
  27                                     public views::LinkListener,
  28                                     public views::ContextMenuController {
  29  public:
  30   explicit BookmarkBarInstructionsView(
  31       BookmarkBarInstructionsDelegate* delegate);
  32
  33  private:
  34   // views::View:
  35   gfx::Size GetPreferredSize() const override;
  36   void Layout() override;
  37   const char* GetClassName() const override;
  38   void OnThemeChanged() override;
  39   void ViewHierarchyChanged(
  40       const ViewHierarchyChangedDetails& details) override;
  41   void GetAccessibleState(ui::AXViewState* state) override;
  42
  43   // views::LinkListener:
  44   void LinkClicked(views::Link* source, int event_flags) override;
  45
  46   // views::ContextMenuController:
  47   void ShowContextMenuForView(views::View* source,
  48                               const gfx::Point& point,
  49                               ui::MenuSourceType source_type) override;
  50
  51   void UpdateColors();
  52
  53   BookmarkBarInstructionsDelegate* delegate_;
  54
  55   views::Label* instructions_;
  56   views::Link* import_link_;
  57
  58   // The baseline of the child views. This is -1 if none of the views support a
  59   // baseline.
  60   int baseline_;
  61
  62   // Have the colors of the child views been updated? This is initially false
  63   // and set to true once we have a valid ThemeProvider.
  64   bool updated_colors_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(BookmarkBarInstructionsView);
  67 };
  68
  69 #endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_BAR_INSTRUCTIONS_VIEW_H_