Add ShellAcceleratorController that managers global keyboard accelerators.

ui/aura/desktop.cc

Index: ui/aura/desktop.cc
diff --git a/ui/aura/desktop.cc b/ui/aura/desktop.cc
index 010acf4f3a55d6dca455c4d78cc62f3affcde5b7..60368b60fd0747385c2fede9f512aa294ae2c767 100644
--- a/ui/aura/desktop.cc
+++ b/ui/aura/desktop.cc
@@ -23,6 +23,7 @@
 #include "ui/aura/screen_aura.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
+#include "ui/base/accelerator_manager.h"
 #include "ui/base/hit_test.h"
 #include "ui/gfx/compositor/compositor.h"
 #include "ui/gfx/compositor/layer.h"
@@ -44,6 +45,17 @@ static const int kDefaultHostWindowY = 200;
 static const int kDefaultHostWindowWidth = 1280;
 static const int kDefaultHostWindowHeight = 1024;
 
+// Acceleraters handled by Desktop.
+struct AcceleratorData {
+  ui::KeyboardCode keycode;
+  bool shift;
+  bool ctrl;
+  bool alt;
+} kAcceleratorData[] = {
+  { ui::VKEY_F11, false, false, false },
+  { ui::VKEY_HOME, false, true, false },
+};
+
 // Returns true if |target| has a non-client (frame) component at |location|,
 // in window coordinates.
 bool IsNonClientLocation(Window* target, const gfx::Point& location) {
@@ -96,46 +108,39 @@ void GetEventFiltersToNotify(Window* target, EventFilters* filters) {
 }
 
 #if !defined(NDEBUG)
-bool MaybeFullScreen(DesktopHost* host, KeyEvent* event) {
-  if (event->key_code() == ui::VKEY_F11) {
-    host->ToggleFullScreen();
-    return true;
+bool FullScreen(DesktopHost* host) {
+  host->ToggleFullScreen();
+  return true;
+}
+
+bool Rotate(Desktop* desktop) {
+  static int i = 0;
+  int delta = 0;
+  switch (i) {
+    case 0: delta = 90; break;
+    case 1: delta = 90; break;
+    case 2: delta = 90; break;
+    case 3: delta = 90; break;
+    case 4: delta = -90; break;
+    case 5: delta = -90; break;
+    case 6: delta = -90; break;
+    case 7: delta = -90; break;
+    case 8: delta = -90; break;
+    case 9: delta = 180; break;
+    case 10: delta = 180; break;
+    case 11: delta = 90; break;
+    case 12: delta = 180; break;
+    case 13: delta = 180; break;
   }
-  return false;
-}
-
-bool MaybeRotate(Desktop* desktop, KeyEvent* event) {
-  if ((event->flags() & ui::EF_CONTROL_DOWN) &&
-      event->key_code() == ui::VKEY_HOME) {
-    static int i = 0;
-    int delta = 0;
-    switch (i) {
-      case 0: delta = 90; break;
-      case 1: delta = 90; break;
-      case 2: delta = 90; break;
-      case 3: delta = 90; break;
-      case 4: delta = -90; break;
-      case 5: delta = -90; break;
-      case 6: delta = -90; break;
-      case 7: delta = -90; break;
-      case 8: delta = -90; break;
-      case 9: delta = 180; break;
-      case 10: delta = 180; break;
-      case 11: delta = 90; break;
-      case 12: delta = 180; break;
-      case 13: delta = 180; break;
-    }
-    i = (i + 1) % 14;
-    desktop->layer()->GetAnimator()->set_preemption_strategy(
-        ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
-    scoped_ptr<ui::LayerAnimationSequence> screen_rotation(
-        new ui::LayerAnimationSequence(new ui::ScreenRotation(delta)));
-    screen_rotation->AddObserver(desktop);
-    desktop->layer()->GetAnimator()->ScheduleAnimation(
-        screen_rotation.release());
-    return true;
-  }
-  return false;
+  i = (i + 1) % 14;
+  desktop->layer()->GetAnimator()->set_preemption_strategy(
+      ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
+  scoped_ptr<ui::LayerAnimationSequence> screen_rotation(
+      new ui::LayerAnimationSequence(new ui::ScreenRotation(delta)));
+  screen_rotation->AddObserver(desktop);
+  desktop->layer()->GetAnimator()->ScheduleAnimation(
+      screen_rotation.release());
+  return true;
 }
 #endif
 
@@ -274,14 +279,6 @@ bool Desktop::DispatchMouseEvent(MouseEvent* event) {
 }
 
 bool Desktop::DispatchKeyEvent(KeyEvent* event) {
-#if !defined(NDEBUG)
-  // TODO(beng): replace this hack with global keyboard event handlers.
-  if (event->type() == ui::ET_KEY_PRESSED) {
-    if (MaybeFullScreen(host_.get(), event) || MaybeRotate(this, event))
-      return true;
-  }
-#endif
-
   if (focused_window_) {
     KeyEvent translated_event(*event);
     return ProcessKeyEvent(focused_window_, &translated_event);
@@ -411,6 +408,29 @@ bool Desktop::IsMouseButtonDown() const {
   return mouse_button_flags_ != 0;
 }
 
+bool Desktop::AcceleratorPressed(const ui::Accelerator& accelerator) {
+#if !defined(NDEBUG)
+  if (accelerator.key_code() == ui::VKEY_F11) {
+    return FullScreen(host_.get());
+  } else if (accelerator.key_code() == ui::VKEY_HOME &&
+             accelerator.IsCtrlDown()) {
+    return Rotate(this);
+  }
+#endif
+  return false;
+}
+
+void Desktop::RegisterAccelerators(
+    ui::AcceleratorManager* accelerator_manager) {
+  for (size_t i = 0; i < arraysize(kAcceleratorData); ++i) {
+    accelerator_manager->Register(ui::Accelerator(kAcceleratorData[i].keycode,
+                                                  kAcceleratorData[i].shift,
+                                                  kAcceleratorData[i].ctrl,
+                                                  kAcceleratorData[i].alt),
+                                  aura::Desktop::GetInstance());
+  }
+}
+
 void Desktop::SetCapture(Window* window) {
   if (capture_window_ == window)
     return;