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

// Copyright 2013 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_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_DELEGATE_H_
#define CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_DELEGATE_H_

namespace gfx {
class Size;
}

// Delegate interface to control layout decisions without having to depend on
// Browser{,Frame,View}.
class OpaqueBrowserFrameViewLayoutDelegate {
 public:
  // Controls the visual placement of the window icon/title in non-tabstrip
  // mode.
  virtual bool ShouldShowWindowIcon() const = 0;
  virtual bool ShouldShowWindowTitle() const = 0;
  virtual string16 GetWindowTitle() const = 0;

  // Returns the size of the window icon. This can be platform dependent
  // because of differences in fonts, so its part of the interface.
  virtual int GetIconSize() const = 0;

  // Returns true if we should leave any offset at the frame caption. Typically
  // when the frame is maximized/full screen we want to leave no offset at the
  // top.
  virtual bool ShouldLeaveOffsetNearTopBorder() const = 0;

  // Returns the browser's minimum view size. Used because we need to calculate
  // the minimum size for the entire non-client area.
  virtual gfx::Size GetBrowserViewMinimumSize() const = 0;

  // Controls the visualization of the avatar
  virtual bool ShouldShowAvatar() const = 0;

  // Returns true if in guest mode or a non off the record session.
  virtual bool IsRegularOrGuestSession() const = 0;

  // We don't have a ThemeProvider in the layout manager, so plumb in the icon
  // source here.
  virtual gfx::ImageSkia GetOTRAvatarIcon() const = 0;

  // Controls window state.
  virtual bool IsMaximized() const = 0;
  virtual bool IsMinimized() const = 0;
  virtual bool IsFullscreen() const = 0;

  virtual bool IsTabStripVisible() const = 0;
  virtual int GetTabStripHeight() const = 0;

  // Various platforms need to be able to add more space to the
  // tabstrip. Windows 8 metro mode uses this to account for the window
  // switcher button.
  virtual int GetAdditionalReservedSpaceInTabStrip() const = 0;

  // Returns the tabstrips preferred size so the frame layout can work around
  // it.
  virtual gfx::Size GetTabstripPreferredSize() const = 0;

 protected:
  virtual ~OpaqueBrowserFrameViewLayoutDelegate() {}
};

#endif  // CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_DELEGATE_H_