chrome/browser/ui/views/frame/opaque_browser_frame_view_layout_delegate.h

   1 // Copyright 2013 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_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_DELEGATE_H_
   6 #define CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_DELEGATE_H_
   7
   8 namespace gfx {
   9 class Size;
  10 }
  11
  12 // Delegate interface to control layout decisions without having to depend on
  13 // Browser{,Frame,View}.
  14 class OpaqueBrowserFrameViewLayoutDelegate {
  15  public:
  16   // Controls the visual placement of the window icon/title in non-tabstrip
  17   // mode.
  18   virtual bool ShouldShowWindowIcon() const = 0;
  19   virtual bool ShouldShowWindowTitle() const = 0;
  20   virtual base::string16 GetWindowTitle() const = 0;
  21
  22   // Returns the size of the window icon. This can be platform dependent
  23   // because of differences in fonts, so its part of the interface.
  24   virtual int GetIconSize() const = 0;
  25
  26   // Returns true if we should leave any offset at the frame caption. Typically
  27   // when the frame is maximized/full screen we want to leave no offset at the
  28   // top.
  29   virtual bool ShouldLeaveOffsetNearTopBorder() const = 0;
  30
  31   // Returns the browser's minimum view size. Used because we need to calculate
  32   // the minimum size for the entire non-client area.
  33   virtual gfx::Size GetBrowserViewMinimumSize() const = 0;
  34
  35   // Whether we should show the (minimize,maximize,close) buttons. This can
  36   // depend on the current state of the window (e.g., whether it is maximized).
  37   virtual bool ShouldShowCaptionButtons() const = 0;
  38
  39   // Controls the visualization of the avatar
  40   virtual bool ShouldShowAvatar() const = 0;
  41
  42   // Returns true if in guest mode or a non off the record session.
  43   virtual bool IsRegularOrGuestSession() const = 0;
  44
  45   // We don't have a ThemeProvider in the layout manager, so plumb in the icon
  46   // source here.
  47   virtual gfx::ImageSkia GetOTRAvatarIcon() const = 0;
  48
  49   // Controls window state.
  50   virtual bool IsMaximized() const = 0;
  51   virtual bool IsMinimized() const = 0;
  52   virtual bool IsFullscreen() const = 0;
  53
  54   virtual bool IsTabStripVisible() const = 0;
  55   virtual int GetTabStripHeight() const = 0;
  56
  57   // Various platforms need to be able to add more space to the
  58   // tabstrip. Windows 8 metro mode uses this to account for the window
  59   // switcher button.
  60   virtual int GetAdditionalReservedSpaceInTabStrip() const = 0;
  61
  62   // Returns the tabstrips preferred size so the frame layout can work around
  63   // it.
  64   virtual gfx::Size GetTabstripPreferredSize() const = 0;
  65
  66  protected:
  67   virtual ~OpaqueBrowserFrameViewLayoutDelegate() {}
  68 };
  69
  70 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_DELEGATE_H_