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// Copyright (c) 2011 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_SHELL_SHELL_H_
#define UI_AURA_SHELL_SHELL_H_
#pragma once
#include <utility>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/task.h"
#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
#include "ui/aura_shell/aura_shell_export.h"
namespace aura {
class EventFilter;
class Window;
}
namespace gfx {
class Rect;
}
namespace aura_shell {
class Launcher;
class ShellDelegate;
namespace internal {
class DragDropController;
class ShelfLayoutController;
class WorkspaceController;
}
// Shell is a singleton object that presents the Shell API and implements the
// Desktop's delegate interface.
class AURA_SHELL_EXPORT Shell {
public:
// Upon creation, the Shell sets itself as the Desktop's delegate, which takes
// ownership of the Shell.
// A shell must be explicitly created so that it can call |Init()| with the
// delegate set. |delegate| can be NULL (if not required for initialization).
static Shell* CreateInstance(ShellDelegate* delegate);
// Should never be called before |CreateInstance()|.
static Shell* GetInstance();
static void DeleteInstanceForTesting();
aura::Window* GetContainer(int container_id);
const aura::Window* GetContainer(int container_id) const;
// Adds or removes |filter| from the DesktopEventFilter.
void AddDesktopEventFilter(aura::EventFilter* filter);
void RemoveDesktopEventFilter(aura::EventFilter* filter);
// Toggles between overview mode and normal mode.
void ToggleOverview();
ShellDelegate* delegate() { return delegate_.get(); }
Launcher* launcher() { return launcher_.get(); }
private:
typedef std::pair<aura::Window*, gfx::Rect> WindowAndBoundsPair;
explicit Shell(ShellDelegate* delegate);
virtual ~Shell();
void Init();
// Enables WorkspaceManager.
void EnableWorkspaceManager();
static Shell* instance_;
std::vector<WindowAndBoundsPair> to_restore_;
base::WeakPtrFactory<Shell> method_factory_;
scoped_ptr<ShellDelegate> delegate_;
scoped_ptr<Launcher> launcher_;
scoped_ptr<internal::DragDropController> drag_drop_controller_;
scoped_ptr<internal::WorkspaceController> workspace_controller_;
scoped_ptr<internal::ShelfLayoutController> shelf_layout_controller_;
DISALLOW_COPY_AND_ASSIGN(Shell);
};
} // namespace aura_shell
#endif // UI_AURA_SHELL_SHELL_H_
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