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mojo/services/window_manager/window_manager_app.h

+// Copyright 2014 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 SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_APP_H_
+#define SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_APP_H_
+
+#include <set>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "mojo/public/cpp/application/application_delegate.h"
+#include "mojo/public/cpp/application/interface_factory_impl.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/string.h"
+#include "mojo/services/window_manager/capture_controller_observer.h"
+#include "mojo/services/window_manager/focus_controller_observer.h"
+#include "mojo/services/window_manager/native_viewport_event_dispatcher_impl.h"
+#include "mojo/services/window_manager/view_target.h"
+#include "mojo/services/window_manager/window_manager_impl.h"
+#include "third_party/mojo_services/src/view_manager/public/cpp/types.h"
+#include "third_party/mojo_services/src/view_manager/public/cpp/view_manager_client_factory.h"
+#include "third_party/mojo_services/src/view_manager/public/cpp/view_manager_delegate.h"
+#include "third_party/mojo_services/src/view_manager/public/cpp/view_observer.h"
+#include "third_party/mojo_services/src/window_manager/public/interfaces/window_manager_internal.mojom.h"
+#include "ui/base/accelerators/accelerator_manager.h"
+#include "ui/events/event_handler.h"
+
+namespace gfx {
+class Size;
+}
+
+namespace window_manager {
+
+class CaptureController;
+class FocusController;
+class FocusRules;
+class ViewEventDispatcher;
+class WindowManagerDelegate;
+class WindowManagerImpl;
+
+// Implements core window manager functionality that could conceivably be shared
+// across multiple window managers implementing superficially different user
+// experiences. Establishes communication with the view manager.
+// A window manager wishing to use this core should create and own an instance
+// of this object. They may implement the associated ViewManager/WindowManager
+// delegate interfaces exposed by the view manager, this object provides the
+// canonical implementation of said interfaces but will call out to the wrapped
+// instances.
+class WindowManagerApp
+    : public mojo::ApplicationDelegate,
+      public mojo::ViewManagerDelegate,
+      public mojo::ViewObserver,
+      public ui::EventHandler,
+      public FocusControllerObserver,
+      public CaptureControllerObserver,
+      public mojo::InterfaceFactory<mojo::WindowManager>,
+      public mojo::InterfaceFactory<mojo::WindowManagerInternal>,
+      public mojo::InterfaceFactory<mojo::NativeViewportEventDispatcher>,
+      public mojo::WindowManagerInternal {
+ public:
+  WindowManagerApp(ViewManagerDelegate* view_manager_delegate,
+                   WindowManagerDelegate* window_manager_delegate);
+  ~WindowManagerApp() override;
+
+  ViewEventDispatcher* event_dispatcher() {
+    return view_event_dispatcher_.get();
+  }
+
+  // Register/deregister new connections to the window manager service.
+  void AddConnection(WindowManagerImpl* connection);
+  void RemoveConnection(WindowManagerImpl* connection);
+
+  // These are canonical implementations of the window manager API methods.
+  bool SetCapture(mojo::Id view);
+  bool FocusWindow(mojo::Id view);
+  bool ActivateWindow(mojo::Id view);
+
+  void DispatchInputEventToView(mojo::View* view, mojo::EventPtr event);
+  void SetViewportSize(const gfx::Size& size);
+
+  bool IsReady() const;
+
+  FocusController* focus_controller() { return focus_controller_.get(); }
+  CaptureController* capture_controller() { return capture_controller_.get(); }
+
+  void InitFocus(scoped_ptr<FocusRules> rules);
+
+  ui::AcceleratorManager* accelerator_manager() {
+    return &accelerator_manager_;
+  }
+
+  // WindowManagerImpl::Embed() forwards to this. If connected to ViewManager
+  // then forwards to delegate, otherwise waits for connection to establish then
+  // forwards.
+  void Embed(const mojo::String& url,
+             mojo::InterfaceRequest<mojo::ServiceProvider> services,
+             mojo::ServiceProviderPtr exposed_services);
+
+  // Overridden from ApplicationDelegate:
+  void Initialize(mojo::ApplicationImpl* impl) override;
+  bool ConfigureIncomingConnection(
+      mojo::ApplicationConnection* connection) override;
+
+ private:
+  // TODO(sky): rename this. Connections is ambiguous.
+  typedef std::set<WindowManagerImpl*> Connections;
+  typedef std::set<mojo::Id> RegisteredViewIdSet;
+
+  struct PendingEmbed;
+  class WindowManagerInternalImpl;
+
+  mojo::ViewManager* view_manager() {
+    return root_ ? root_->view_manager() : nullptr;
+  }
+
+  bool SetCaptureImpl(mojo::View* view);
+  bool FocusWindowImpl(mojo::View* view);
+  bool ActivateWindowImpl(mojo::View* view);
+
+  ui::Accelerator ConvertEventToAccelerator(const ui::KeyEvent* event);
+
+  // Creates an ViewTarget for every view in the hierarchy beneath |view|,
+  // and adds to the registry so that it can be retrieved later via
+  // GetViewTargetForViewId().
+  // TODO(beng): perhaps View should have a property bag.
+  void RegisterSubtree(mojo::View* view);
+
+  // Recursively invokes Unregister() for |view| and all its descendants.
+  void UnregisterSubtree(mojo::View* view);
+
+  // Deletes the ViewTarget associated with the hierarchy beneath |id|,
+  // and removes from the registry.
+  void Unregister(mojo::View* view);
+
+  // Overridden from ViewManagerDelegate:
+  void OnEmbed(mojo::View* root,
+               mojo::InterfaceRequest<mojo::ServiceProvider> services,
+               mojo::ServiceProviderPtr exposed_services) override;
+  void OnViewManagerDisconnected(mojo::ViewManager* view_manager) override;
+  bool OnPerformAction(mojo::View* view, const std::string& action) override;
+
+  // Overridden from ViewObserver:
+  void OnTreeChanged(const ViewObserver::TreeChangeParams& params) override;
+  void OnViewDestroying(mojo::View* view) override;
+
+  // Overridden from ui::EventHandler:
+  void OnEvent(ui::Event* event) override;
+
+  // Overridden from mojo::FocusControllerObserver:
+  void OnFocused(mojo::View* gained_focus) override;
+  void OnActivated(mojo::View* gained_active) override;
+
+  // Overridden from mojo::CaptureControllerObserver:
+  void OnCaptureChanged(mojo::View* gained_capture) override;
+
+  // Creates the connection to the ViewManager.
+  void LaunchViewManager(mojo::ApplicationImpl* app);
+
+  // InterfaceFactory<WindowManagerInternal>:
+  void Create(
+      mojo::ApplicationConnection* connection,
+      mojo::InterfaceRequest<mojo::WindowManagerInternal> request) override;
+
+  // InterfaceFactory<WindowManager>:
+  void Create(mojo::ApplicationConnection* connection,
+              mojo::InterfaceRequest<mojo::WindowManager> request) override;
+
+  // InterfaceFactory<NativeViewportEventDispatcher>:
+  void Create(mojo::ApplicationConnection* connection,
+              mojo::InterfaceRequest<mojo::NativeViewportEventDispatcher>
+                  request) override;
+
+  // WindowManagerInternal:
+  void CreateWindowManagerForViewManagerClient(
+      uint16_t connection_id,
+      mojo::ScopedMessagePipeHandle window_manager_pipe) override;
+  void SetViewManagerClient(
+      mojo::ScopedMessagePipeHandle view_manager_client_request) override;
+
+  mojo::Shell* shell_;
+
+  ViewManagerDelegate* wrapped_view_manager_delegate_;
+  WindowManagerDelegate* window_manager_delegate_;
+
+  mojo::ViewManagerServicePtr view_manager_service_;
+  scoped_ptr<mojo::ViewManagerClientFactory> view_manager_client_factory_;
+  mojo::View* root_;
+
+  scoped_ptr<FocusController> focus_controller_;
+  scoped_ptr<CaptureController> capture_controller_;
+
+  ui::AcceleratorManager accelerator_manager_;
+
+  Connections connections_;
+  RegisteredViewIdSet registered_view_id_set_;
+
+  mojo::WindowManagerInternalClientPtr window_manager_client_;
+
+  ScopedVector<PendingEmbed> pending_embeds_;
+
+  scoped_ptr<mojo::ViewManagerClient> view_manager_client_;
+
+  scoped_ptr<ViewEventDispatcher> view_event_dispatcher_;
+
+  scoped_ptr<mojo::Binding<WindowManagerInternal>> wm_internal_binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowManagerApp);
+};
+
+}  // namespace window_manager
+
+#endif  // SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_APP_H_