15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef UI_AURA_LAYOUT_MANAGER_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define UI_AURA_LAYOUT_MANAGER_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/aura/aura_export.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace gfx { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Rect; 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace aura { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Window; 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// An interface implemented by an object that places child windows. 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class AURA_EXPORT LayoutManager { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LayoutManager(); 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~LayoutManager(); 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Invoked when the window is resized. 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnWindowResized() = 0; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Invoked when the window |child| has been added. 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnWindowAddedToLayout(Window* child) = 0; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Invoked prior to removing |window|. 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnWillRemoveWindowFromLayout(Window* child) = 0; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Invoked after removing |window|. 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnWindowRemovedFromLayout(Window* child) = 0; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Invoked when the |SetVisible()| is invoked on the window |child|. 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |visible| is the value supplied to |SetVisible()|. If |visible| is true, 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // window->IsVisible() may still return false. See description in 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Window::IsVisible() for details. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnChildWindowVisibilityChanged(Window* child, bool visible) = 0; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Invoked when |Window::SetBounds| is called on |child|. 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Implementation must call |SetChildBoundsDirect| to change the 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |child|'s bounds. LayoutManager may modify |requested_bounds| 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // before applying, or ignore the request. 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void SetChildBounds(Window* child, 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::Rect& requested_bounds) = 0; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Sets the child's bounds forcibly. LayoutManager is responsible 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // for checking the state and make sure the bounds are correctly 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // adjusted. 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void SetChildBoundsDirect(aura::Window* child, const gfx::Rect& bounds); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace aura 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // UI_AURA_LAYOUT_MANAGER_H_ 59