src/mojo/services/window_manager/window_manager_app.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MOJO_SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_APP_H_
   6 #define MOJO_SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_APP_H_
   7
   8 #include <set>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "mojo/aura/window_tree_host_mojo.h"
  12 #include "mojo/aura/window_tree_host_mojo_delegate.h"
  13 #include "mojo/public/cpp/application/application_delegate.h"
  14 #include "mojo/public/cpp/application/interface_factory_impl.h"
  15 #include "mojo/public/cpp/bindings/string.h"
  16 #include "mojo/services/public/cpp/view_manager/types.h"
  17 #include "mojo/services/public/cpp/view_manager/view_manager_client_factory.h"
  18 #include "mojo/services/public/cpp/view_manager/view_manager_delegate.h"
  19 #include "mojo/services/public/cpp/view_manager/view_observer.h"
  20 #include "mojo/services/public/cpp/view_manager/window_manager_delegate.h"
  21 #include "mojo/services/window_manager/window_manager_service_impl.h"
  22 #include "ui/aura/client/focus_change_observer.h"
  23 #include "ui/events/event_handler.h"
  24 #include "ui/wm/public/activation_change_observer.h"
  25
  26 namespace aura {
  27 namespace client {
  28 class ActivationClient;
  29 class FocusClient;
  30 }
  31 class Window;
  32 }
  33
  34 namespace wm {
  35 class ScopedCaptureClient;
  36 }
  37
  38 namespace mojo {
  39
  40 class AuraInit;
  41 class DummyDelegate;
  42 class WindowManagerServiceImpl;
  43 class WindowTreeHostMojo;
  44
  45 // Implements core window manager functionality that could conceivably be shared
  46 // across multiple window managers implementing superficially different user
  47 // experiences. Establishes communication with the view manager.
  48 // A window manager wishing to use this core should create and own an instance
  49 // of this object. They may implement the associated ViewManager/WindowManager
  50 // delegate interfaces exposed by the view manager, this object provides the
  51 // canonical implementation of said interfaces but will call out to the wrapped
  52 // instances.
  53 // This object maintains an aura::WindowTreeHost containing a hierarchy of
  54 // aura::Windows. Window manager functionality (e.g. focus, activation,
  55 // modality, etc.) are implemented using aura core window manager components.
  56 class WindowManagerApp
  57     : public ApplicationDelegate,
  58       public ViewManagerDelegate,
  59       public WindowManagerDelegate,
  60       public ViewObserver,
  61       public WindowTreeHostMojoDelegate,
  62       public ui::EventHandler,
  63       public aura::client::FocusChangeObserver,
  64       public aura::client::ActivationChangeObserver {
  65  public:
  66   WindowManagerApp(ViewManagerDelegate* view_manager_delegate,
  67                    WindowManagerDelegate* window_manager_delegate);
  68   virtual ~WindowManagerApp();
  69
  70   static View* GetViewForWindow(aura::Window* window);
  71
  72   // Register/deregister new connections to the window manager service.
  73   void AddConnection(WindowManagerServiceImpl* connection);
  74   void RemoveConnection(WindowManagerServiceImpl* connection);
  75
  76   // These are canonical implementations of the window manager API methods.
  77   void SetCapture(Id view);
  78   void FocusWindow(Id view);
  79   void ActivateWindow(Id view);
  80
  81   bool IsReady() const;
  82
  83   // A client of this object will use this accessor to gain access to the
  84   // aura::Window hierarchy and attach event handlers.
  85   aura::WindowTreeHost* host() { return window_tree_host_.get(); }
  86
  87   // Overridden from ApplicationDelegate:
  88   virtual void Initialize(ApplicationImpl* impl) MOJO_OVERRIDE;
  89   virtual bool ConfigureIncomingConnection(ApplicationConnection* connection)
  90       MOJO_OVERRIDE;
  91
  92  private:
  93   typedef std::set<WindowManagerServiceImpl*> Connections;
  94   typedef std::map<Id, aura::Window*> ViewIdToWindowMap;
  95
  96   // Overridden from ViewManagerDelegate:
  97   virtual void OnEmbed(
  98       ViewManager* view_manager,
  99       View* root,
 100       ServiceProviderImpl* exported_services,
 101       scoped_ptr<ServiceProvider> imported_services) MOJO_OVERRIDE;
 102   virtual void OnViewManagerDisconnected(
 103       ViewManager* view_manager) MOJO_OVERRIDE;
 104
 105   // Overridden from WindowManagerDelegate:
 106   virtual void Embed(
 107       const String& url,
 108       InterfaceRequest<ServiceProvider> service_provider) OVERRIDE;
 109   virtual void DispatchEvent(EventPtr event) OVERRIDE;
 110
 111   // Overridden from ViewObserver:
 112   virtual void OnTreeChanged(
 113       const ViewObserver::TreeChangeParams& params) MOJO_OVERRIDE;
 114   virtual void OnViewDestroyed(View* view) MOJO_OVERRIDE;
 115   virtual void OnViewBoundsChanged(View* view,
 116                                    const gfx::Rect& old_bounds,
 117                                    const gfx::Rect& new_bounds) MOJO_OVERRIDE;
 118
 119   // Overridden from WindowTreeHostMojoDelegate:
 120   virtual void CompositorContentsChanged(const SkBitmap& bitmap) MOJO_OVERRIDE;
 121
 122   // Overridden from ui::EventHandler:
 123   virtual void OnEvent(ui::Event* event) MOJO_OVERRIDE;
 124
 125   // Overridden from aura::client::FocusChangeObserver:
 126   virtual void OnWindowFocused(aura::Window* gained_focus,
 127                                aura::Window* lost_focus) MOJO_OVERRIDE;
 128
 129   // Overridden from aura::client::ActivationChangeObserver:
 130   virtual void OnWindowActivated(aura::Window* gained_active,
 131                                  aura::Window* lost_active) MOJO_OVERRIDE;
 132
 133   aura::Window* GetWindowForViewId(Id view) const;
 134
 135   // Creates an aura::Window for every view in the hierarchy beneath |view|,
 136   // and adds to the registry so that it can be retrieved later via
 137   // GetWindowForViewId().
 138   // TODO(beng): perhaps View should have a property bag.
 139   void RegisterSubtree(View* view, aura::Window* parent);
 140   // Deletes the aura::Windows associated with the hierarchy beneath |id|,
 141   // and removes from the registry.
 142   void UnregisterSubtree(View* view);
 143
 144   InterfaceFactoryImplWithContext<WindowManagerServiceImpl, WindowManagerApp>
 145       window_manager_service_factory_;
 146
 147   ViewManagerDelegate* wrapped_view_manager_delegate_;
 148   WindowManagerDelegate* wrapped_window_manager_delegate_;
 149
 150   ViewManager* view_manager_;
 151   ViewManagerClientFactory view_manager_client_factory_;
 152   View* root_;
 153
 154   scoped_ptr<AuraInit> aura_init_;
 155   scoped_ptr<WindowTreeHostMojo> window_tree_host_;
 156
 157   scoped_ptr<wm::ScopedCaptureClient> capture_client_;
 158   scoped_ptr<aura::client::FocusClient> focus_client_;
 159   aura::client::ActivationClient* activation_client_;
 160
 161   Connections connections_;
 162   ViewIdToWindowMap view_id_to_window_map_;
 163
 164   scoped_ptr<DummyDelegate> dummy_delegate_;
 165
 166   DISALLOW_COPY_AND_ASSIGN(WindowManagerApp);
 167 };
 168
 169 }  // namespace mojo
 170
 171 #endif  // MOJO_SERVICES_WINDOW_MANAGER_WINDOW_MANAGER_APP_H_