Add UIControlsAsh that works with multiple root windows

ash/ui_controls_ash.cc

+// 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.
+
+#include "ash/shell.h"
+#include "ash/shell_factory.h"
+#include "ash/wm/window_properties.h"
+#include "ui/aura/root_window.h"
+#include "ui/aura/ui_controls_aura.h"
+#include "ui/gfx/screen.h"
+#include "ui/ui_controls/ui_controls_aura.h"
+
+namespace ash {
+namespace internal {
+namespace {
+
+// Returns the UIControls object for RootWindow.
+// kUIControlsKey is owned property and UIControls object
+// will be deleted when the root window is deleted.
+ui_controls::UIControlsAura* GetUIControlsForRootWindow(
+    aura::RootWindow* root_window) {
+  ui_controls::UIControlsAura* native_ui_control =
+      root_window->GetProperty(kUIControlsKey);
+  if (!native_ui_control) {
+    native_ui_control = aura::CreateUIControlsAura(root_window);
+    // Pass the ownership to the |root_window|.
+    root_window->SetProperty(kUIControlsKey, native_ui_control);
+  }
+  return native_ui_control;
+}
+
+// Returns the UIControls object for the RootWindow at the |point| in
+// absolute screen coordinates.  NULL if there is no RootWindow under the
+// |point|.
+ui_controls::UIControlsAura* GetUIControlsAt(const gfx::Point& point) {
+  aura::RootWindow* root = Shell::GetRootWindowAt(point);
+  return root ? GetUIControlsForRootWindow(root) : NULL;
+}
+
+}  // namespace
+
+class UIControlsAsh : public ui_controls::UIControlsAura {
+ public:
+  UIControlsAsh() {
+  }
+  virtual ~UIControlsAsh() {
+  }
+
+  // ui_controls::UIControslAura overrides:
+  virtual bool SendKeyPress(gfx::NativeWindow window,
+                            ui::KeyboardCode key,
+                            bool control,
+                            bool shift,
+                            bool alt,
+                            bool command) OVERRIDE {
+    return SendKeyPressNotifyWhenDone(
+        window, key, control, shift, alt, command, base::Closure());
+  }
+
+  virtual bool SendKeyPressNotifyWhenDone(
+      gfx::NativeWindow window,
+      ui::KeyboardCode key,
+      bool control,
+      bool shift,
+      bool alt,
+      bool command,
+      const base::Closure& closure) OVERRIDE {
+    aura::RootWindow* root =
+        window ? window->GetRootWindow() : Shell::GetActiveRootWindow();
+    ui_controls::UIControlsAura* ui_controls = GetUIControlsForRootWindow(root);
+    return ui_controls && ui_controls->SendKeyPressNotifyWhenDone(
+        window, key, control, shift, alt, command, closure);
+  }
+
+  virtual bool SendMouseMove(long x, long y) OVERRIDE {
+    ui_controls::UIControlsAura* ui_controls =
+        GetUIControlsAt(gfx::Point(x, y));
+    return ui_controls && ui_controls->SendMouseMove(x, y);
+  }
+
+  virtual bool SendMouseMoveNotifyWhenDone(
+      long x,
+      long y,
+      const base::Closure& closure) OVERRIDE {
+    ui_controls::UIControlsAura* ui_controls =
+        GetUIControlsAt(gfx::Point(x, y));
+    return ui_controls &&
+        ui_controls->SendMouseMoveNotifyWhenDone(x, y, closure);
+  }
+
+  virtual bool SendMouseEvents(ui_controls::MouseButton type,
+                               int state) OVERRIDE {
+    ui_controls::UIControlsAura* ui_controls =
+        GetUIControlsAt(gfx::Screen::GetCursorScreenPoint());
+    return ui_controls && ui_controls->SendMouseEvents(type, state);
+  }
+
+  virtual bool SendMouseEventsNotifyWhenDone(
+      ui_controls::MouseButton type,
+      int state,
+      const base::Closure& closure) OVERRIDE {
+    ui_controls::UIControlsAura* ui_controls =
+        GetUIControlsAt(gfx::Screen::GetCursorScreenPoint());
+    return ui_controls && ui_controls->SendMouseEventsNotifyWhenDone(
+        type, state, closure);
+  }
+
+  virtual bool SendMouseClick(ui_controls::MouseButton type) OVERRIDE {
+    ui_controls::UIControlsAura* ui_controls =
+        GetUIControlsAt(gfx::Screen::GetCursorScreenPoint());
+    return ui_controls && ui_controls->SendMouseClick(type);
+  }
+
+  virtual void RunClosureAfterAllPendingUIEvents(
+      const base::Closure& closure) OVERRIDE {
+    ui_controls::UIControlsAura* ui_controls = GetUIControlsForRootWindow(
+        Shell::GetActiveRootWindow());
+    if (ui_controls)
+      ui_controls->RunClosureAfterAllPendingUIEvents(closure);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(UIControlsAsh);
+};
+
+ui_controls::UIControlsAura* CreateUIControls() {
+  return new UIControlsAsh();
+}
+
+}  // namespace internal
+}  // namespace ash