blob: 0262377515f82512632c53f44d098c2daceaad4e [file] [log] [blame]
// Copyright 2017 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.
#include <list>
#include <memory>
#include "base/macros.h"
#include "extensions/browser/app_window/app_window_registry.h"
#include "ui/aura/client/window_parenting_client.h"
#include "ui/aura/window_tree_host_observer.h"
#include "ui/gfx/native_widget_types.h"
namespace aura {
class WindowTreeHost;
namespace client {
class ScreenPositionClient;
} // namespace client
} // namespace aura
namespace content {
class BrowserContext;
} // namespace content
namespace gfx {
class Rect;
class Size;
} // namespace gfx
namespace extensions {
class AppWindow;
// Owns and manages a WindowTreeHost for a display. New AppWindows will fill
// the entire root window. Any additional AppWindows are simply drawn over the
// existing AppWindow(s) and cannot be resized except by resizing the
// WindowTreeHost.
// TODO(michaelpg): Allow app windows to move between displays when bounds are
// updated via the API.
class RootWindowController : public aura::client::WindowParentingClient,
public aura::WindowTreeHostObserver,
public AppWindowRegistry::Observer {
class DesktopDelegate {
virtual ~DesktopDelegate() = default;
// Called when the root window requests to be closed. This should eventually
// destroy |root_window_controller|.
virtual void CloseRootWindowController(
RootWindowController* root_window_controller) = 0;
// RootWindowController initializes and displays a WindowTreeHost within
// |bounds| (in physical pixels).
// |desktop_delegate| must outlive the RootWindowController.
RootWindowController(DesktopDelegate* desktop_delegate,
const gfx::Rect& bounds,
content::BrowserContext* browser_context);
~RootWindowController() override;
// Attaches a NativeAppWindow's window to our root window.
void AddAppWindow(AppWindow* app_window, gfx::NativeWindow window);
// Unparents the AppWindow's window from our root window so it can be added to
// a different RootWindowController.
void RemoveAppWindow(AppWindow* app_window);
// Closes the root window's AppWindows, resulting in their destruction.
void CloseAppWindows();
// Updates the size of the root window.
// TODO(michaelpg): Handle display events to adapt or close the window.
void UpdateSize(const gfx::Size& size);
aura::WindowTreeHost* host() { return host_.get(); }
// aura::client::WindowParentingClient:
aura::Window* GetDefaultParent(aura::Window* window,
const gfx::Rect& bounds) override;
// aura::WindowTreeHostObserver:
void OnHostCloseRequested(aura::WindowTreeHost* host) override;
// AppWindowRegistry::Observer:
void OnAppWindowRemoved(AppWindow* app_window) override;
void DestroyWindowTreeHost();
DesktopDelegate* const desktop_delegate_;
// The BrowserContext used to create AppWindows.
content::BrowserContext* const browser_context_;
std::unique_ptr<aura::client::ScreenPositionClient> screen_position_client_;
// The host we create.
std::unique_ptr<aura::WindowTreeHost> host_;
// List of AppWindows we've created. Used to close any remaining app windows
// when |host_| is closed or |this| is destroyed.
// Note: Pointers are unowned. NativeAppWindow::Close() will delete them.
std::list<AppWindow*> app_windows_;
} // namespace extensions