Implement "pinned" mode in ash.

ash/accelerators/accelerator_controller.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/accelerators/accelerator_controller.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <utility>
@@ skipping 903 matching lines @@
   for (size_t i = 0; i < kReservedActionsLength; ++i)
     reserved_actions_.insert(kReservedActions[i]);
   for (size_t i = 0; i < kNonrepeatableActionsLength; ++i)
     nonrepeatable_actions_.insert(kNonrepeatableActions[i]);
   for (size_t i = 0; i < kActionsAllowedInAppModeLength; ++i)
     actions_allowed_in_app_mode_.insert(kActionsAllowedInAppMode[i]);
   for (size_t i = 0; i < kActionsNeedingWindowLength; ++i)
     actions_needing_window_.insert(kActionsNeedingWindow[i]);
   for (size_t i = 0; i < kActionsKeepingMenuOpenLength; ++i)
     actions_keeping_menu_open_.insert(kActionsKeepingMenuOpen[i]);
+  for (size_t i = 0; i < kActionsAllowedInPinnedModeLength; ++i)
+    actions_allowed_in_pinned_mode_.insert(kActionsAllowedInPinnedMode[i]);
 
   RegisterAccelerators(kAcceleratorData, kAcceleratorDataLength);
 
   RegisterDeprecatedAccelerators();
 
   if (debug::DebugAcceleratorsEnabled()) {
     RegisterAccelerators(kDebugAcceleratorData, kDebugAcceleratorDataLength);
     // All debug accelerators are reserved.
     for (size_t i = 0; i < kDebugAcceleratorDataLength; ++i)
       reserved_actions_.insert(kDebugAcceleratorData[i].action);
@@ skipping 458 matching lines @@
 }
 
 bool AcceleratorController::ShouldActionConsumeKeyEvent(
     AcceleratorAction action) {
   // Adding new exceptions is *STRONGLY* discouraged.
   return true;
 }
 
 AcceleratorController::AcceleratorProcessingRestriction
 AcceleratorController::GetAcceleratorProcessingRestriction(int action) {
+  if (WmShell::Get()->IsPinned() &&
+      actions_allowed_in_pinned_mode_.find(action) ==
+          actions_allowed_in_pinned_mode_.end() &&
+      actions_allowed_in_app_mode_.find(action) ==
+          actions_allowed_in_app_mode_.end()) {
+    return RESTRICTION_PREVENT_PROCESSING_AND_PROPAGATION;
+  }
   ash::Shell* shell = ash::Shell::GetInstance();
   if (!shell->session_state_delegate()->IsActiveUserSessionStarted() &&
       actions_allowed_at_login_screen_.find(action) ==
           actions_allowed_at_login_screen_.end()) {
     return RESTRICTION_PREVENT_PROCESSING;
   }
   if (shell->session_state_delegate()->IsScreenLocked() &&
       actions_allowed_at_lock_screen_.find(action) ==
           actions_allowed_at_lock_screen_.end()) {
     return RESTRICTION_PREVENT_PROCESSING;
@@ skipping 22 matching lines @@
 }
 
 void AcceleratorController::SetKeyboardBrightnessControlDelegate(
     std::unique_ptr<KeyboardBrightnessControlDelegate>
         keyboard_brightness_control_delegate) {
   keyboard_brightness_control_delegate_ =
       std::move(keyboard_brightness_control_delegate);
 }
 
 }  // namespace ash