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- // Copyright 2020 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 "shell_tab_handler.h"
- #include "ash/capture_mode/capture_mode_util.h"
- #include "ash/focus_cycler.h"
- #include "ash/shelf/shelf.h"
- #include "ash/shelf/shelf_navigation_widget.h"
- #include "ash/shell.h"
- #include "ash/system/status_area_widget.h"
- #include "ash/wm/tablet_mode/tablet_mode_controller.h"
- #include "ash/wm/window_util.h"
- #include "ui/events/event.h"
- #include "ui/wm/public/activation_client.h"
- namespace ash {
- void ShellTabHandler::OnKeyEvent(ui::KeyEvent* key_event) {
- // Only focus the shelf if the device is in clamshell mode, and the user
- // pressed tab.
- if (key_event->key_code() != ui::KeyboardCode::VKEY_TAB ||
- key_event->type() != ui::EventType::ET_KEY_PRESSED ||
- key_event->IsAltDown() || key_event->IsControlDown() ||
- key_event->IsCommandDown() ||
- shell_->tablet_mode_controller()->InTabletMode()) {
- return;
- }
- // Capture session will process their own tab events.
- if (capture_mode_util::IsCaptureModeActive())
- return;
- aura::Window* root_window_for_new_windows =
- Shell::GetRootWindowForNewWindows();
- if (!root_window_for_new_windows || window_util::GetActiveWindow())
- return;
- // If there is no active window, focus the HomeButton or StatusWidget,
- // depending on whether this is Tab or Shift + Tab. This will allow the
- // users focus to traverse the shelf.
- auto* shelf = Shelf::ForWindow(root_window_for_new_windows);
- views::Widget* status_area_widget = shelf->status_area_widget();
- views::Widget* navigation_widget = shelf->navigation_widget();
- shell_->focus_cycler()->FocusWidget(
- key_event->IsShiftDown() ? status_area_widget : navigation_widget);
- key_event->SetHandled();
- key_event->StopPropagation();
- }
- } // namespace ash
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