Move processing out of AcceleratorDelegate

ash/common/accelerators/accelerator_router.cc

 // Copyright 2014 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/accelerators/accelerator_delegate.h"
+#include "ash/common/accelerators/accelerator_router.h"
 
 #include "ash/common/accelerators/accelerator_controller.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm_shell.h"
-#include "ash/shell.h"
-#include "ash/wm/window_state_aura.h"
+#include "ash/common/wm_window.h"
+#include "base/stl_util.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/events/event.h"
-#include "ui/wm/core/window_util.h"
 
 namespace ash {
 
 namespace {
 
 // Returns true if |key_code| is a key usually handled directly by the shell.
 bool IsSystemKey(ui::KeyboardCode key_code) {
 #if defined(OS_CHROMEOS)
   switch (key_code) {
     case ui::VKEY_MEDIA_LAUNCH_APP2:  // Fullscreen button.
     case ui::VKEY_MEDIA_LAUNCH_APP1:  // Overview button.
     case ui::VKEY_BRIGHTNESS_DOWN:
     case ui::VKEY_BRIGHTNESS_UP:
     case ui::VKEY_KBD_BRIGHTNESS_DOWN:
     case ui::VKEY_KBD_BRIGHTNESS_UP:
     case ui::VKEY_VOLUME_MUTE:
     case ui::VKEY_VOLUME_DOWN:
     case ui::VKEY_VOLUME_UP:
     case ui::VKEY_POWER:
       return true;
     default:
       return false;
   }
 #endif  // defined(OS_CHROMEOS)
   return false;
 }
 
 }  // namespace
 
-AcceleratorDelegate::AcceleratorDelegate() {}
-AcceleratorDelegate::~AcceleratorDelegate() {}
+AcceleratorRouter::AcceleratorRouter() {}
 
-bool AcceleratorDelegate::ProcessAccelerator(
-    const ui::KeyEvent& key_event,
-    const ui::Accelerator& accelerator) {
+AcceleratorRouter::~AcceleratorRouter() {}
+
+bool AcceleratorRouter::ProcessAccelerator(WmWindow* target,
+                                           const ui::KeyEvent& key_event,
+                                           const ui::Accelerator& accelerator) {
+  // Callers should never supply null.
+  DCHECK(target);
   // Special hardware keys like brightness and volume are handled in
   // special way. However, some windows can override this behavior
   // (e.g. Chrome v1 apps by default and Chrome v2 apps with
   // permission) by setting a window property.
-  if (IsSystemKey(key_event.key_code()) && !CanConsumeSystemKeys(key_event)) {
+  if (IsSystemKey(key_event.key_code()) &&
+      !CanConsumeSystemKeys(target, key_event)) {
     // System keys are always consumed regardless of whether they trigger an
     // accelerator to prevent windows from seeing unexpected key up events.
     WmShell::Get()->accelerator_controller()->Process(accelerator);
     return true;
   }
-  if (!ShouldProcessAcceleratorNow(key_event, accelerator))
+  if (!ShouldProcessAcceleratorNow(target, key_event, accelerator))
     return false;
   return WmShell::Get()->accelerator_controller()->Process(accelerator);
 }
 
-// Uses the top level window so if the target is a web contents window the
-// containing parent window will be checked for the property.
-bool AcceleratorDelegate::CanConsumeSystemKeys(const ui::KeyEvent& event) {
-  aura::Window* target = static_cast<aura::Window*>(event.target());
-  DCHECK(target);
-  aura::Window* top_level = ::wm::GetToplevelWindow(target);
-  return top_level && wm::GetWindowState(top_level)->can_consume_system_keys();
+bool AcceleratorRouter::CanConsumeSystemKeys(WmWindow* target,
+                                             const ui::KeyEvent& event) {
+  // Uses the top level window so if the target is a web contents window the
+  // containing parent window will be checked for the property.
+  WmWindow* top_level = target->GetToplevelWindowForFocus();
+  return top_level && top_level->GetWindowState()->can_consume_system_keys();
 }
 
-// Returns true if the |accelerator| should be processed now, inside Ash's env
-// event filter.
-bool AcceleratorDelegate::ShouldProcessAcceleratorNow(
+bool AcceleratorRouter::ShouldProcessAcceleratorNow(
+    WmWindow* target,
     const ui::KeyEvent& event,
     const ui::Accelerator& accelerator) {
+  // Callers should never supply null.
+  DCHECK(target);
   // On ChromeOS, If the accelerator is Search+<key(s)> then it must never be
   // intercepted by apps or windows.
   if (accelerator.IsCmdDown())
     return true;
 
-  aura::Window* target = static_cast<aura::Window*>(event.target());
-  DCHECK(target);
-
-  aura::Window::Windows root_windows = Shell::GetAllRootWindows();
-  if (std::find(root_windows.begin(), root_windows.end(), target) !=
-      root_windows.end())
+  if (ContainsValue(WmShell::Get()->GetAllRootWindows(), target))
     return true;
 
-  aura::Window* top_level = ::wm::GetToplevelWindow(target);
   AcceleratorController* accelerator_controller =
       WmShell::Get()->accelerator_controller();
 
   // Reserved accelerators (such as Power button) always have a prority.
   if (accelerator_controller->IsReserved(accelerator))
     return true;
 
   // A full screen window has a right to handle all key events including the
   // reserved ones.
-  if (top_level && wm::GetWindowState(top_level)->IsFullscreen()) {
+  WmWindow* top_level = target->GetToplevelWindowForFocus();
+  if (top_level && top_level->GetWindowState()->IsFullscreen()) {
     // On ChromeOS, fullscreen windows are either browser or apps, which
     // send key events to a web content first, then will process keys
     // if the web content didn't consume them.
     return false;
   }
 
   // Handle preferred accelerators (such as ALT-TAB) before sending
   // to the target.
   if (accelerator_controller->IsPreferred(accelerator))
     return true;
 
   return WmShell::Get()->GetAppListTargetVisibility();
 }
 
 }  // namespace ash