1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "chrome/browser/chromeos/keyboard_driven_event_rewriter.h"
9 #include "chrome/browser/chromeos/login/user_manager.h"
10 #include "chrome/browser/chromeos/system/input_device_settings.h"
11 #include "ui/events/event.h"
17 const int kModifierMask = ui::EF_SHIFT_DOWN;
19 // Returns true if and only if it is on login screen (i.e. user is not logged
20 // in) and the keyboard driven flag in the OEM manifest is on.
21 bool ShouldStripModifiersForArrowKeysAndEnter() {
22 if (UserManager::IsInitialized() &&
23 !UserManager::Get()->IsUserLoggedIn()) {
24 return system::keyboard_settings::ForceKeyboardDrivenUINavigation();
32 KeyboardDrivenEventRewriter::KeyboardDrivenEventRewriter() {}
34 KeyboardDrivenEventRewriter::~KeyboardDrivenEventRewriter() {}
36 bool KeyboardDrivenEventRewriter::RewriteIfKeyboardDrivenOnLoginScreen(
37 ui::KeyEvent* event) {
38 if (!ShouldStripModifiersForArrowKeysAndEnter())
41 return RewriteEvent(event);
44 bool KeyboardDrivenEventRewriter::RewriteForTesting(ui::KeyEvent* event) {
45 return RewriteEvent(event);
48 bool KeyboardDrivenEventRewriter::RewriteEvent(ui::KeyEvent* event) {
49 if ((event->flags() & kModifierMask) != kModifierMask)
52 if (event->key_code() != ui::VKEY_LEFT &&
53 event->key_code() != ui::VKEY_RIGHT &&
54 event->key_code() != ui::VKEY_UP &&
55 event->key_code() != ui::VKEY_DOWN &&
56 event->key_code() != ui::VKEY_RETURN &&
57 event->key_code() != ui::VKEY_F6) {
61 XEvent* xev = event->native_event();
62 XKeyEvent* xkey = &(xev->xkey);
63 xkey->state &= ~(ControlMask | Mod1Mask | ShiftMask);
64 event->set_flags(event->flags() & ~kModifierMask);
65 event->NormalizeFlags();
69 } // namespace chromeos