| // Copyright 2013 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 "chrome/browser/chromeos/keyboard_driven_event_rewriter.h" |
| |
| #include <X11/Xlib.h> |
| |
| #include "chrome/browser/chromeos/login/user_manager.h" |
| #include "chrome/browser/chromeos/system/input_device_settings.h" |
| #include "ui/events/event.h" |
| |
| namespace chromeos { |
| |
| namespace { |
| |
| const int kModifierMask = ui::EF_SHIFT_DOWN; |
| |
| // Returns true if and only if it is on login screen (i.e. user is not logged |
| // in) and the keyboard driven flag in the OEM manifest is on. |
| bool ShouldStripModifiersForArrowKeysAndEnter() { |
| if (UserManager::IsInitialized() && |
| !UserManager::Get()->IsUserLoggedIn()) { |
| return system::keyboard_settings::ForceKeyboardDrivenUINavigation(); |
| } |
| |
| return false; |
| } |
| |
| } // namespace |
| |
| KeyboardDrivenEventRewriter::KeyboardDrivenEventRewriter() {} |
| |
| KeyboardDrivenEventRewriter::~KeyboardDrivenEventRewriter() {} |
| |
| bool KeyboardDrivenEventRewriter::RewriteIfKeyboardDrivenOnLoginScreen( |
| ui::KeyEvent* event) { |
| if (!ShouldStripModifiersForArrowKeysAndEnter()) |
| return false; |
| |
| return RewriteEvent(event); |
| } |
| |
| bool KeyboardDrivenEventRewriter::RewriteForTesting(ui::KeyEvent* event) { |
| return RewriteEvent(event); |
| } |
| |
| bool KeyboardDrivenEventRewriter::RewriteEvent(ui::KeyEvent* event) { |
| if ((event->flags() & kModifierMask) != kModifierMask) |
| return false; |
| |
| if (event->key_code() != ui::VKEY_LEFT && |
| event->key_code() != ui::VKEY_RIGHT && |
| event->key_code() != ui::VKEY_UP && |
| event->key_code() != ui::VKEY_DOWN && |
| event->key_code() != ui::VKEY_RETURN && |
| event->key_code() != ui::VKEY_F6) { |
| return false; |
| } |
| |
| XEvent* xev = event->native_event(); |
| XKeyEvent* xkey = &(xev->xkey); |
| xkey->state &= ~(ControlMask | Mod1Mask | ShiftMask); |
| event->set_flags(event->flags() & ~kModifierMask); |
| event->NormalizeFlags(); |
| return true; |
| } |
| |
| } // namespace chromeos |