Move root_window.* to window_event_dispatcher.*

ui/aura/root_window.h

Index: ui/aura/root_window.h
diff --git a/ui/aura/root_window.h b/ui/aura/root_window.h
deleted file mode 100644
index bbdabd3f753c2b7720050eea5c3de827289f2ea9..0000000000000000000000000000000000000000
--- a/ui/aura/root_window.h
+++ /dev/null
@@ -1,329 +0,0 @@
-// Copyright (c) 2012 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_ROOT_WINDOW_H_
-#define UI_AURA_ROOT_WINDOW_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/gtest_prod_util.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/message_loop/message_loop.h"
-#include "ui/aura/aura_export.h"
-#include "ui/aura/client/capture_delegate.h"
-#include "ui/aura/window_tree_host.h"
-#include "ui/aura/window_tree_host_delegate.h"
-#include "ui/base/cursor/cursor.h"
-#include "ui/compositor/compositor.h"
-#include "ui/compositor/layer_animation_observer.h"
-#include "ui/events/event_constants.h"
-#include "ui/events/event_processor.h"
-#include "ui/events/event_targeter.h"
-#include "ui/events/gestures/gesture_recognizer.h"
-#include "ui/events/gestures/gesture_types.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/point.h"
-
-namespace gfx {
-class Size;
-class Transform;
-}
-
-namespace ui {
-class GestureEvent;
-class GestureRecognizer;
-class KeyEvent;
-class LayerAnimationSequence;
-class MouseEvent;
-class ScrollEvent;
-class TouchEvent;
-class ViewProp;
-}
-
-namespace aura {
-class WindowTreeHost;
-class RootWindowObserver;
-class TestScreen;
-class WindowTargeter;
-
-// RootWindow is responsible for hosting a set of windows.
-class AURA_EXPORT WindowEventDispatcher : public ui::EventProcessor,
-                                          public ui::GestureEventHelper,
-                                          public ui::LayerAnimationObserver,
-                                          public client::CaptureDelegate,
-                                          public WindowTreeHostDelegate {
- public:
-  struct AURA_EXPORT CreateParams {
-    // CreateParams with initial_bounds and default host in pixel.
-    explicit CreateParams(const gfx::Rect& initial_bounds);
-    ~CreateParams() {}
-
-    gfx::Rect initial_bounds;
-
-    // A host to use in place of the default one that RootWindow will create.
-    // NULL by default.
-    WindowTreeHost* host;
-  };
-
-  explicit WindowEventDispatcher(const CreateParams& params);
-  virtual ~WindowEventDispatcher();
-
-  // Returns the WindowTreeHost for the specified accelerated widget, or NULL
-  // if there is none associated.
-  static WindowEventDispatcher* GetForAcceleratedWidget(
-      gfx::AcceleratedWidget widget);
-
-  Window* window() {
-    return const_cast<Window*>(
-        const_cast<const WindowEventDispatcher*>(this)->window());
-  }
-  const Window* window() const { return window_.get(); }
-  WindowTreeHost* host() {
-    return const_cast<WindowTreeHost*>(
-        const_cast<const WindowEventDispatcher*>(this)->host());
-  }
-  const WindowTreeHost* host() const { return host_.get(); }
-  Window* mouse_pressed_handler() { return mouse_pressed_handler_; }
-  Window* mouse_moved_handler() { return mouse_moved_handler_; }
-
-  // Stop listening events in preparation for shutdown.
-  void PrepareForShutdown();
-
-  // Repost event for re-processing. Used when exiting context menus.
-  // We only support the ET_MOUSE_PRESSED and ET_GESTURE_TAP_DOWN event
-  // types (although the latter is currently a no-op).
-  void RepostEvent(const ui::LocatedEvent& event);
-
-  WindowTreeHostDelegate* AsWindowTreeHostDelegate();
-
-  // Invoked when the mouse events get enabled or disabled.
-  void OnMouseEventsEnableStateChanged(bool enabled);
-
-  // Returns a target window for the given gesture event.
-  Window* GetGestureTarget(ui::GestureEvent* event);
-
-  // Handles a gesture event. Returns true if handled. Unlike the other
-  // event-dispatching function (e.g. for touch/mouse/keyboard events), gesture
-  // events are dispatched from GestureRecognizer instead of WindowTreeHost.
-  void DispatchGestureEvent(ui::GestureEvent* event);
-
-  // Invoked when |window| is being destroyed.
-  void OnWindowDestroying(Window* window);
-
-  // Invoked when |window|'s bounds have changed. |contained_mouse| indicates if
-  // the bounds before change contained the |last_moust_location()|.
-  void OnWindowBoundsChanged(Window* window, bool contained_mouse);
-
-  // Dispatches OnMouseExited to the |window| which is hiding if nessessary.
-  void DispatchMouseExitToHidingWindow(Window* window);
-
-  // Dispatches a ui::ET_MOUSE_EXITED event at |point|.
-  void DispatchMouseExitAtPoint(const gfx::Point& point);
-
-  // Invoked when |window|'s visibility has changed.
-  void OnWindowVisibilityChanged(Window* window, bool is_visible);
-
-  // Invoked when |window|'s tranfrom has changed. |contained_mouse|
-  // indicates if the bounds before change contained the
-  // |last_moust_location()|.
-  void OnWindowTransformed(Window* window, bool contained_mouse);
-
-  // Invoked when the keyboard mapping (in X11 terms: the mapping between
-  // keycodes and keysyms) has changed.
-  void OnKeyboardMappingChanged();
-
-  // The system windowing system has sent a request that we close our window.
-  void OnWindowTreeHostCloseRequested();
-
-  // Add/remove observer. There is no need to remove the observer if
-  // the root window is being deleted. In particular, you SHOULD NOT remove
-  // in |WindowObserver::OnWindowDestroying| of the observer observing
-  // the root window because it is too late to remove it.
-  void AddRootWindowObserver(RootWindowObserver* observer);
-  void RemoveRootWindowObserver(RootWindowObserver* observer);
-
-  // Gesture Recognition -------------------------------------------------------
-
-  // When a touch event is dispatched to a Window, it may want to process the
-  // touch event asynchronously. In such cases, the window should consume the
-  // event during the event dispatch. Once the event is properly processed, the
-  // window should let the WindowEventDispatcher know about the result of the
-  // event processing, so that gesture events can be properly created and
-  // dispatched.
-  void ProcessedTouchEvent(ui::TouchEvent* event,
-                           Window* window,
-                           ui::EventResult result);
-
-  // These methods are used to defer the processing of mouse/touch events
-  // related to resize. A client (typically a RenderWidgetHostViewAura) can call
-  // HoldPointerMoves when an resize is initiated and then ReleasePointerMoves
-  // once the resize is completed.
-  //
-  // More than one hold can be invoked and each hold must be cancelled by a
-  // release before we resume normal operation.
-  void HoldPointerMoves();
-  void ReleasePointerMoves();
-
-  // Gets the last location seen in a mouse event in this root window's
-  // coordinates. This may return a point outside the root window's bounds.
-  gfx::Point GetLastMouseLocationInRoot() const;
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(WindowEventDispatcherTest,
-                           KeepTranslatedEventInRoot);
-
-  friend class Window;
-  friend class TestScreen;
-
-  // The parameter for OnWindowHidden() to specify why window is hidden.
-  enum WindowHiddenReason {
-    WINDOW_DESTROYED,  // Window is destroyed.
-    WINDOW_HIDDEN,     // Window is hidden.
-    WINDOW_MOVING,     // Window is temporarily marked as hidden due to move
-                       // across root windows.
-  };
-
-  // Updates the event with the appropriate transform for the device scale
-  // factor. The WindowTreeHostDelegate dispatches events in the physical pixel
-  // coordinate. But the event processing from WindowEventDispatcher onwards
-  // happen in device-independent pixel coordinate. So it is necessary to update
-  // the event received from the host.
-  void TransformEventForDeviceScaleFactor(ui::LocatedEvent* event);
-
-  // Dispatches the specified event type (intended for enter/exit) to the
-  // |mouse_moved_handler_|.
-  ui::EventDispatchDetails DispatchMouseEnterOrExit(
-      const ui::MouseEvent& event,
-      ui::EventType type) WARN_UNUSED_RESULT;
-  ui::EventDispatchDetails ProcessGestures(
-      ui::GestureRecognizer::Gestures* gestures) WARN_UNUSED_RESULT;
-
-  // Called when a Window is attached or detached from the
-  // WindowEventDispatcher.
-  void OnWindowAddedToRootWindow(Window* window);
-  void OnWindowRemovedFromRootWindow(Window* window, Window* new_root);
-
-  // Called when a window becomes invisible, either by being removed
-  // from root window hierarchy, via SetVisible(false) or being destroyed.
-  // |reason| specifies what triggered the hiding. Note that becoming invisible
-  // will cause a window to lose capture and some windows may destroy themselves
-  // on capture (like DragDropTracker).
-  void OnWindowHidden(Window* invisible, WindowHiddenReason reason);
-
-  // Cleans up the state of gestures for all windows in |window| (including
-  // |window| itself). This includes cancelling active touch points.
-  void CleanupGestureState(Window* window);
-
-  // Overridden from aura::client::CaptureDelegate:
-  virtual void UpdateCapture(Window* old_capture, Window* new_capture) OVERRIDE;
-  virtual void OnOtherRootGotCapture() OVERRIDE;
-  virtual void SetNativeCapture() OVERRIDE;
-  virtual void ReleaseNativeCapture() OVERRIDE;
-
-  // Overridden from ui::EventProcessor:
-  virtual ui::EventTarget* GetRootTarget() OVERRIDE;
-  virtual void PrepareEventForDispatch(ui::Event* event) OVERRIDE;
-
-  // Overridden from ui::EventDispatcherDelegate.
-  virtual bool CanDispatchToTarget(ui::EventTarget* target) OVERRIDE;
-  virtual ui::EventDispatchDetails PreDispatchEvent(ui::EventTarget* target,
-                                                    ui::Event* event) OVERRIDE;
-  virtual ui::EventDispatchDetails PostDispatchEvent(
-      ui::EventTarget* target, const ui::Event& event) OVERRIDE;
-
-  // Overridden from ui::GestureEventHelper.
-  virtual bool CanDispatchToConsumer(ui::GestureConsumer* consumer) OVERRIDE;
-  virtual void DispatchPostponedGestureEvent(ui::GestureEvent* event) OVERRIDE;
-  virtual void DispatchCancelTouchEvent(ui::TouchEvent* event) OVERRIDE;
-
-  // Overridden from ui::LayerAnimationObserver:
-  virtual void OnLayerAnimationEnded(
-      ui::LayerAnimationSequence* animation) OVERRIDE;
-  virtual void OnLayerAnimationScheduled(
-      ui::LayerAnimationSequence* animation) OVERRIDE;
-  virtual void OnLayerAnimationAborted(
-      ui::LayerAnimationSequence* animation) OVERRIDE;
-
-  // Overridden from aura::WindowTreeHostDelegate:
-  virtual void OnHostCancelMode() OVERRIDE;
-  virtual void OnHostActivated() OVERRIDE;
-  virtual void OnHostLostWindowCapture() OVERRIDE;
-  virtual void OnHostLostMouseGrab() OVERRIDE;
-  virtual void OnHostMoved(const gfx::Point& origin) OVERRIDE;
-  virtual void OnHostResized(const gfx::Size& size) OVERRIDE;
-  virtual void OnCursorMovedToRootLocation(
-      const gfx::Point& root_location) OVERRIDE;
-  virtual WindowEventDispatcher* AsDispatcher() OVERRIDE;
-  virtual const WindowEventDispatcher* AsDispatcher() const OVERRIDE;
-  virtual ui::EventProcessor* GetEventProcessor() OVERRIDE;
-
-  // We hold and aggregate mouse drags and touch moves as a way of throttling
-  // resizes when HoldMouseMoves() is called. The following methods are used to
-  // dispatch held and newly incoming mouse and touch events, typically when an
-  // event other than one of these needs dispatching or a matching
-  // ReleaseMouseMoves()/ReleaseTouchMoves() is called.  NOTE: because these
-  // methods dispatch events from WindowTreeHost the coordinates are in terms of
-  // the root.
-
-  ui::EventDispatchDetails DispatchHeldEvents() WARN_UNUSED_RESULT;
-  // Creates and dispatches synthesized mouse move event using the
-  // current mouse location.
-  ui::EventDispatchDetails SynthesizeMouseMoveEvent() WARN_UNUSED_RESULT;
-
-  void SynthesizeMouseMoveEventAsync();
-
-  // Posts a task to send synthesized mouse move event if there
-  // is no a pending task.
-  void PostMouseMoveEventAfterWindowChange();
-
-  void PreDispatchLocatedEvent(Window* target, ui::LocatedEvent* event);
-  void PreDispatchMouseEvent(Window* target, ui::MouseEvent* event);
-  void PreDispatchTouchEvent(Window* target, ui::TouchEvent* event);
-
-  // TODO(beng): evaluate the ideal ownership model.
-  scoped_ptr<Window> window_;
-
-  scoped_ptr<WindowTreeHost> host_;
-
-  // Touch ids that are currently down.
-  uint32 touch_ids_down_;
-
-  ObserverList<RootWindowObserver> observers_;
-
-  Window* mouse_pressed_handler_;
-  Window* mouse_moved_handler_;
-  Window* event_dispatch_target_;
-  Window* old_dispatch_target_;
-
-  bool synthesize_mouse_move_;
-
-  // How many move holds are outstanding. We try to defer dispatching
-  // touch/mouse moves while the count is > 0.
-  int move_hold_count_;
-  // The location of |held_move_event_| is in |window_|'s coordinate.
-  scoped_ptr<ui::LocatedEvent> held_move_event_;
-
-  // Allowing for reposting of events. Used when exiting context menus.
-  scoped_ptr<ui::LocatedEvent> held_repostable_event_;
-
-  // Set when dispatching a held event.
-  bool dispatching_held_event_;
-
-  scoped_ptr<ui::ViewProp> prop_;
-
-  // Used to schedule reposting an event.
-  base::WeakPtrFactory<WindowEventDispatcher> repost_event_factory_;
-
-  // Used to schedule DispatchHeldEvents() when |move_hold_count_| goes to 0.
-  base::WeakPtrFactory<WindowEventDispatcher> held_event_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowEventDispatcher);
-};
-
-}  // namespace aura
-
-#endif  // UI_AURA_ROOT_WINDOW_H_