123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657 |
- // 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 UI_AURA_LAYOUT_MANAGER_H_
- #define UI_AURA_LAYOUT_MANAGER_H_
- #include "ui/aura/aura_export.h"
- namespace gfx {
- class Rect;
- }
- namespace aura {
- class Window;
- // An interface implemented by an object that places child windows.
- class AURA_EXPORT LayoutManager {
- public:
- LayoutManager();
- virtual ~LayoutManager();
- // Invoked when the window is resized.
- virtual void OnWindowResized() = 0;
- // Invoked when the window |child| has been added.
- virtual void OnWindowAddedToLayout(Window* child) = 0;
- // Invoked prior to removing |window|.
- virtual void OnWillRemoveWindowFromLayout(Window* child) = 0;
- // Invoked after removing |window|.
- virtual void OnWindowRemovedFromLayout(Window* child) = 0;
- // Invoked when the |SetVisible()| is invoked on the window |child|.
- // |visible| is the value supplied to |SetVisible()|. If |visible| is true,
- // window->IsVisible() may still return false. See description in
- // Window::IsVisible() for details.
- virtual void OnChildWindowVisibilityChanged(Window* child, bool visible) = 0;
- // Invoked when |Window::SetBounds| is called on |child|.
- // Implementation must call |SetChildBoundsDirect| to change the
- // |child|'s bounds. LayoutManager may modify |requested_bounds|
- // before applying, or ignore the request.
- virtual void SetChildBounds(Window* child,
- const gfx::Rect& requested_bounds) = 0;
- protected:
- // Sets the child's bounds forcibly. LayoutManager is responsible
- // for checking the state and make sure the bounds are correctly
- // adjusted.
- void SetChildBoundsDirect(aura::Window* child, const gfx::Rect& bounds);
- };
- } // namespace aura
- #endif // UI_AURA_LAYOUT_MANAGER_H_
|