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// Copyright 2015 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 COMPONENTS_MUS_VIEW_TREE_HOST_IMPL_H_
#define COMPONENTS_MUS_VIEW_TREE_HOST_IMPL_H_
#include "base/memory/scoped_ptr.h"
#include "components/mus/display_manager.h"
#include "components/mus/event_dispatcher.h"
#include "components/mus/focus_controller_delegate.h"
#include "components/mus/public/cpp/types.h"
#include "components/mus/public/interfaces/view_tree_host.mojom.h"
#include "components/mus/server_view.h"
namespace cc {
class SurfaceManager;
}
namespace surfaces {
class SurfacesScheduler;
}
namespace view_manager {
class ConnectionManager;
class FocusController;
class ViewTreeHostDelegate;
class ViewTreeImpl;
// ViewTreeHostImpl is an implementation of the ViewTreeHost interface.
// It serves as a top level root view for a window. Its lifetime is managed by
// ConnectionManager. If the connection to the client breaks or if the user
// closes the associated window, then this object and related state will be
// deleted.
class ViewTreeHostImpl : public DisplayManagerDelegate,
public mojo::ViewTreeHost,
public FocusControllerDelegate {
public:
// TODO(fsamuel): All these parameters are just plumbing for creating
// DisplayManagers. We should probably just store these common parameters
// in the DisplayManagerFactory and pass them along on DisplayManager::Create.
ViewTreeHostImpl(
mojo::ViewTreeHostClientPtr client,
ConnectionManager* connection_manager,
bool is_headless,
mojo::ApplicationImpl* app_impl,
const scoped_refptr<gles2::GpuState>& gpu_state,
const scoped_refptr<surfaces::SurfacesState>& surfaces_state);
~ViewTreeHostImpl() override;
// Initializes state that depends on the existence of a ViewTreeHostImpl.
void Init(ViewTreeHostDelegate* delegate);
ViewTreeImpl* GetViewTree();
mojo::ViewTreeHostClient* client() const { return client_.get(); }
// Returns whether |view| is a descendant of this root but not itself a
// root view.
bool IsViewAttachedToRoot(const ServerView* view) const;
// Schedules a paint for the specified region in the coordinates of |view| if
// the |view| is in this viewport. Returns whether |view| is in the viewport.
bool SchedulePaintIfInViewport(const ServerView* view,
const gfx::Rect& bounds);
// Returns the metrics for this viewport.
const mojo::ViewportMetrics& GetViewportMetrics() const;
ConnectionManager* connection_manager() { return connection_manager_; }
// Returns the root ServerView of this viewport.
ServerView* root_view() { return root_.get(); }
const ServerView* root_view() const { return root_.get(); }
void SetFocusedView(ServerView* view);
ServerView* GetFocusedView();
void DestroyFocusController();
void UpdateTextInputState(ServerView* view, const ui::TextInputState& state);
void SetImeVisibility(ServerView* view, bool visible);
void OnAccelerator(uint32_t accelerator_id, mojo::EventPtr event);
void DispatchInputEventToView(const ServerView* target, mojo::EventPtr event);
// ViewTreeHost:
void SetSize(mojo::SizePtr size) override;
void SetTitle(const mojo::String& title) override;
void AddAccelerator(uint32_t id,
mojo::KeyboardCode keyboard_code,
mojo::EventFlags flags) override;
void RemoveAccelerator(uint32_t id) override;
private:
void OnClientClosed();
// DisplayManagerDelegate:
ServerView* GetRootView() override;
void OnEvent(mojo::EventPtr event) override;
void OnDisplayClosed() override;
void OnViewportMetricsChanged(
const mojo::ViewportMetrics& old_metrics,
const mojo::ViewportMetrics& new_metrics) override;
// FocusControllerDelegate:
void OnFocusChanged(ServerView* old_focused_view,
ServerView* new_focused_view) override;
ViewTreeHostDelegate* delegate_;
ConnectionManager* const connection_manager_;
mojo::ViewTreeHostClientPtr client_;
EventDispatcher event_dispatcher_;
scoped_ptr<ServerView> root_;
scoped_ptr<DisplayManager> display_manager_;
scoped_ptr<FocusController> focus_controller_;
DISALLOW_COPY_AND_ASSIGN(ViewTreeHostImpl);
};
} // namespace view_manager
#endif // COMPONENTS_MUS_VIEW_TREE_HOST_IMPL_H_
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