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      1 // Copyright (c) 2012 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 UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_
      6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_
      7 
      8 #include "base/memory/weak_ptr.h"
      9 #include "ui/aura/client/focus_change_observer.h"
     10 #include "ui/aura/window_delegate.h"
     11 #include "ui/aura/window_tree_host_observer.h"
     12 #include "ui/base/cursor/cursor.h"
     13 #include "ui/views/ime/input_method_delegate.h"
     14 #include "ui/views/widget/native_widget_private.h"
     15 #include "ui/wm/core/compound_event_filter.h"
     16 #include "ui/wm/public/activation_change_observer.h"
     17 #include "ui/wm/public/activation_delegate.h"
     18 #include "ui/wm/public/drag_drop_delegate.h"
     19 
     20 namespace aura {
     21 class WindowEventDispatcher;
     22 class WindowTreeHost;
     23 namespace client {
     24 class DragDropClient;
     25 class FocusClient;
     26 class ScreenPositionClient;
     27 class WindowTreeClient;
     28 }
     29 }
     30 
     31 namespace wm {
     32 class CompoundEventFilter;
     33 class CursorManager;
     34 class FocusController;
     35 class InputMethodEventFilter;
     36 class ShadowController;
     37 class VisibilityController;
     38 class WindowModalityController;
     39 }
     40 
     41 namespace views {
     42 namespace corewm {
     43 class TooltipController;
     44 }
     45 class DesktopCaptureClient;
     46 class DesktopDispatcherClient;
     47 class DesktopEventClient;
     48 class DesktopNativeCursorManager;
     49 class DesktopWindowTreeHost;
     50 class DropHelper;
     51 class FocusManagerEventHandler;
     52 class TooltipManagerAura;
     53 class WindowReorderer;
     54 
     55 class VIEWS_EXPORT DesktopNativeWidgetAura
     56     : public internal::NativeWidgetPrivate,
     57       public aura::WindowDelegate,
     58       public aura::client::ActivationDelegate,
     59       public aura::client::ActivationChangeObserver,
     60       public aura::client::FocusChangeObserver,
     61       public views::internal::InputMethodDelegate,
     62       public aura::client::DragDropDelegate,
     63       public aura::WindowTreeHostObserver {
     64  public:
     65   explicit DesktopNativeWidgetAura(internal::NativeWidgetDelegate* delegate);
     66   virtual ~DesktopNativeWidgetAura();
     67 
     68   // Maps from window to DesktopNativeWidgetAura. |window| must be a root
     69   // window.
     70   static DesktopNativeWidgetAura* ForWindow(aura::Window* window);
     71 
     72   // Called by our DesktopWindowTreeHost after it has deleted native resources;
     73   // this is the signal that we should start our shutdown.
     74   virtual void OnHostClosed();
     75 
     76   // TODO(beng): remove this method and replace with an implementation of
     77   //             WindowDestroying() that takes the window being destroyed.
     78   // Called from ~DesktopWindowTreeHost. This takes the WindowEventDispatcher
     79   // as by the time we get here |dispatcher_| is NULL.
     80   virtual void OnDesktopWindowTreeHostDestroyed(aura::WindowTreeHost* host);
     81 
     82   wm::InputMethodEventFilter* input_method_event_filter() {
     83     return input_method_event_filter_.get();
     84   }
     85   wm::CompoundEventFilter* root_window_event_filter() {
     86     return root_window_event_filter_.get();
     87   }
     88   aura::WindowTreeHost* host() {
     89     return host_.get();
     90   }
     91 
     92   // Ensures that the correct window is activated/deactivated based on whether
     93   // we are being activated/deactivated.
     94   void HandleActivationChanged(bool active);
     95 
     96  protected:
     97   // Overridden from internal::NativeWidgetPrivate:
     98   virtual void InitNativeWidget(const Widget::InitParams& params) OVERRIDE;
     99   virtual NonClientFrameView* CreateNonClientFrameView() OVERRIDE;
    100   virtual bool ShouldUseNativeFrame() const OVERRIDE;
    101   virtual bool ShouldWindowContentsBeTransparent() const OVERRIDE;
    102   virtual void FrameTypeChanged() OVERRIDE;
    103   virtual Widget* GetWidget() OVERRIDE;
    104   virtual const Widget* GetWidget() const OVERRIDE;
    105   virtual gfx::NativeView GetNativeView() const OVERRIDE;
    106   virtual gfx::NativeWindow GetNativeWindow() const OVERRIDE;
    107   virtual Widget* GetTopLevelWidget() OVERRIDE;
    108   virtual const ui::Compositor* GetCompositor() const OVERRIDE;
    109   virtual ui::Compositor* GetCompositor() OVERRIDE;
    110   virtual ui::Layer* GetLayer() OVERRIDE;
    111   virtual void ReorderNativeViews() OVERRIDE;
    112   virtual void ViewRemoved(View* view) OVERRIDE;
    113   virtual void SetNativeWindowProperty(const char* name, void* value) OVERRIDE;
    114   virtual void* GetNativeWindowProperty(const char* name) const OVERRIDE;
    115   virtual TooltipManager* GetTooltipManager() const OVERRIDE;
    116   virtual void SetCapture() OVERRIDE;
    117   virtual void ReleaseCapture() OVERRIDE;
    118   virtual bool HasCapture() const OVERRIDE;
    119   virtual InputMethod* CreateInputMethod() OVERRIDE;
    120   virtual internal::InputMethodDelegate* GetInputMethodDelegate() OVERRIDE;
    121   virtual ui::InputMethod* GetHostInputMethod() OVERRIDE;
    122   virtual void CenterWindow(const gfx::Size& size) OVERRIDE;
    123   virtual void GetWindowPlacement(
    124       gfx::Rect* bounds,
    125       ui::WindowShowState* maximized) const OVERRIDE;
    126   virtual bool SetWindowTitle(const base::string16& title) OVERRIDE;
    127   virtual void SetWindowIcons(const gfx::ImageSkia& window_icon,
    128                               const gfx::ImageSkia& app_icon) OVERRIDE;
    129   virtual void InitModalType(ui::ModalType modal_type) OVERRIDE;
    130   virtual gfx::Rect GetWindowBoundsInScreen() const OVERRIDE;
    131   virtual gfx::Rect GetClientAreaBoundsInScreen() const OVERRIDE;
    132   virtual gfx::Rect GetRestoredBounds() const OVERRIDE;
    133   virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
    134   virtual void SetSize(const gfx::Size& size) OVERRIDE;
    135   virtual void StackAbove(gfx::NativeView native_view) OVERRIDE;
    136   virtual void StackAtTop() OVERRIDE;
    137   virtual void StackBelow(gfx::NativeView native_view) OVERRIDE;
    138   virtual void SetShape(gfx::NativeRegion shape) OVERRIDE;
    139   virtual void Close() OVERRIDE;
    140   virtual void CloseNow() OVERRIDE;
    141   virtual void Show() OVERRIDE;
    142   virtual void Hide() OVERRIDE;
    143   virtual void ShowMaximizedWithBounds(
    144       const gfx::Rect& restored_bounds) OVERRIDE;
    145   virtual void ShowWithWindowState(ui::WindowShowState state) OVERRIDE;
    146   virtual bool IsVisible() const OVERRIDE;
    147   virtual void Activate() OVERRIDE;
    148   virtual void Deactivate() OVERRIDE;
    149   virtual bool IsActive() const OVERRIDE;
    150   virtual void SetAlwaysOnTop(bool always_on_top) OVERRIDE;
    151   virtual bool IsAlwaysOnTop() const OVERRIDE;
    152   virtual void SetVisibleOnAllWorkspaces(bool always_visible) OVERRIDE;
    153   virtual void Maximize() OVERRIDE;
    154   virtual void Minimize() OVERRIDE;
    155   virtual bool IsMaximized() const OVERRIDE;
    156   virtual bool IsMinimized() const OVERRIDE;
    157   virtual void Restore() OVERRIDE;
    158   virtual void SetFullscreen(bool fullscreen) OVERRIDE;
    159   virtual bool IsFullscreen() const OVERRIDE;
    160   virtual void SetOpacity(unsigned char opacity) OVERRIDE;
    161   virtual void SetUseDragFrame(bool use_drag_frame) OVERRIDE;
    162   virtual void FlashFrame(bool flash_frame) OVERRIDE;
    163   virtual void RunShellDrag(View* view,
    164                             const ui::OSExchangeData& data,
    165                             const gfx::Point& location,
    166                             int operation,
    167                             ui::DragDropTypes::DragEventSource source) OVERRIDE;
    168   virtual void SchedulePaintInRect(const gfx::Rect& rect) OVERRIDE;
    169   virtual void SetCursor(gfx::NativeCursor cursor) OVERRIDE;
    170   virtual bool IsMouseEventsEnabled() const OVERRIDE;
    171   virtual void ClearNativeFocus() OVERRIDE;
    172   virtual gfx::Rect GetWorkAreaBoundsInScreen() const OVERRIDE;
    173   virtual Widget::MoveLoopResult RunMoveLoop(
    174       const gfx::Vector2d& drag_offset,
    175       Widget::MoveLoopSource source,
    176       Widget::MoveLoopEscapeBehavior escape_behavior) OVERRIDE;
    177   virtual void EndMoveLoop() OVERRIDE;
    178   virtual void SetVisibilityChangedAnimationsEnabled(bool value) OVERRIDE;
    179   virtual ui::NativeTheme* GetNativeTheme() const OVERRIDE;
    180   virtual void OnRootViewLayout() OVERRIDE;
    181   virtual bool IsTranslucentWindowOpacitySupported() const OVERRIDE;
    182   virtual void OnSizeConstraintsChanged() OVERRIDE;
    183   virtual void RepostNativeEvent(gfx::NativeEvent native_event) OVERRIDE;
    184 
    185   // Overridden from aura::WindowDelegate:
    186   virtual gfx::Size GetMinimumSize() const OVERRIDE;
    187   virtual gfx::Size GetMaximumSize() const OVERRIDE;
    188   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
    189                                const gfx::Rect& new_bounds) OVERRIDE {}
    190   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE;
    191   virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE;
    192   virtual bool ShouldDescendIntoChildForEventHandling(
    193       aura::Window* child,
    194       const gfx::Point& location) OVERRIDE;
    195   virtual bool CanFocus() OVERRIDE;
    196   virtual void OnCaptureLost() OVERRIDE;
    197   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
    198   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
    199   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
    200   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
    201   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE;
    202   virtual bool HasHitTestMask() const OVERRIDE;
    203   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE;
    204 
    205   // Overridden from ui::EventHandler:
    206   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
    207   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
    208   virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE;
    209   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
    210 
    211   // Overridden from aura::client::ActivationDelegate:
    212   virtual bool ShouldActivate() const OVERRIDE;
    213 
    214   // Overridden from aura::client::ActivationChangeObserver:
    215   virtual void OnWindowActivated(aura::Window* gained_active,
    216                                  aura::Window* lost_active) OVERRIDE;
    217 
    218   // Overridden from aura::client::FocusChangeObserver:
    219   virtual void OnWindowFocused(aura::Window* gained_focus,
    220                                aura::Window* lost_focus) OVERRIDE;
    221 
    222   // Overridden from views::internal::InputMethodDelegate:
    223   virtual void DispatchKeyEventPostIME(const ui::KeyEvent& key) OVERRIDE;
    224 
    225   // Overridden from aura::client::DragDropDelegate:
    226   virtual void OnDragEntered(const ui::DropTargetEvent& event) OVERRIDE;
    227   virtual int OnDragUpdated(const ui::DropTargetEvent& event) OVERRIDE;
    228   virtual void OnDragExited() OVERRIDE;
    229   virtual int OnPerformDrop(const ui::DropTargetEvent& event) OVERRIDE;
    230 
    231   // Overridden from aura::WindowTreeHostObserver:
    232   virtual void OnHostCloseRequested(const aura::WindowTreeHost* host) OVERRIDE;
    233   virtual void OnHostResized(const aura::WindowTreeHost* host) OVERRIDE;
    234   virtual void OnHostMoved(const aura::WindowTreeHost* host,
    235                            const gfx::Point& new_origin) OVERRIDE;
    236 
    237  private:
    238   friend class FocusManagerEventHandler;
    239   friend class RootWindowDestructionObserver;
    240 
    241   // Installs the input method filter.
    242   void InstallInputMethodEventFilter();
    243 
    244   // To save a clear on platforms where the window is never transparent, the
    245   // window is only set as transparent when the glass frame is in use.
    246   void UpdateWindowTransparency();
    247 
    248   void RootWindowDestroyed();
    249 
    250   scoped_ptr<aura::WindowTreeHost> host_;
    251   DesktopWindowTreeHost* desktop_window_tree_host_;
    252 
    253   // See class documentation for Widget in widget.h for a note about ownership.
    254   Widget::InitParams::Ownership ownership_;
    255 
    256   scoped_ptr<DesktopCaptureClient> capture_client_;
    257 
    258   // Child of the root, contains |content_window_|.
    259   aura::Window* content_window_container_;
    260 
    261   // Child of |content_window_container_|. This is the return value from
    262   // GetNativeView().
    263   // WARNING: this may be NULL, in particular during shutdown it becomes NULL.
    264   aura::Window* content_window_;
    265 
    266   internal::NativeWidgetDelegate* native_widget_delegate_;
    267 
    268   scoped_ptr<wm::FocusController> focus_client_;
    269   scoped_ptr<DesktopDispatcherClient> dispatcher_client_;
    270   scoped_ptr<aura::client::ScreenPositionClient> position_client_;
    271   scoped_ptr<aura::client::DragDropClient> drag_drop_client_;
    272   scoped_ptr<aura::client::WindowTreeClient> window_tree_client_;
    273   scoped_ptr<DesktopEventClient> event_client_;
    274   scoped_ptr<FocusManagerEventHandler> focus_manager_event_handler_;
    275 
    276   // Toplevel event filter which dispatches to other event filters.
    277   scoped_ptr<wm::CompoundEventFilter> root_window_event_filter_;
    278 
    279   scoped_ptr<wm::InputMethodEventFilter> input_method_event_filter_;
    280 
    281   scoped_ptr<DropHelper> drop_helper_;
    282   int last_drop_operation_;
    283 
    284   scoped_ptr<corewm::TooltipController> tooltip_controller_;
    285   scoped_ptr<TooltipManagerAura> tooltip_manager_;
    286 
    287   scoped_ptr<wm::VisibilityController> visibility_controller_;
    288 
    289   scoped_ptr<wm::WindowModalityController>
    290       window_modality_controller_;
    291 
    292   bool restore_focus_on_activate_;
    293 
    294   gfx::NativeCursor cursor_;
    295   // We must manually reference count the number of users of |cursor_manager_|
    296   // because the cursors created by |cursor_manager_| are shared among the
    297   // DNWAs. We can't just stuff this in a LazyInstance because we need to
    298   // destroy this as the last DNWA happens; we can't put it off until
    299   // (potentially) after we tear down the X11 connection because that's a
    300   // crash.
    301   static int cursor_reference_count_;
    302   static wm::CursorManager* cursor_manager_;
    303   static views::DesktopNativeCursorManager* native_cursor_manager_;
    304 
    305   scoped_ptr<wm::ShadowController> shadow_controller_;
    306 
    307   // Reorders child windows of |window_| associated with a view based on the
    308   // order of the associated views in the widget's view hierarchy.
    309   scoped_ptr<WindowReorderer> window_reorderer_;
    310 
    311   // See class documentation for Widget in widget.h for a note about type.
    312   Widget::InitParams::Type widget_type_;
    313 
    314   // The following factory is used for calls to close the NativeWidgetAura
    315   // instance.
    316   base::WeakPtrFactory<DesktopNativeWidgetAura> close_widget_factory_;
    317 
    318   DISALLOW_COPY_AND_ASSIGN(DesktopNativeWidgetAura);
    319 };
    320 
    321 }  // namespace views
    322 
    323 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_NATIVE_WIDGET_AURA_H_
    324