1// Copyright (c) 2012 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.
4
5#include "ash/keyboard_overlay/keyboard_overlay_view.h"
6
7#include "ash/keyboard_overlay/keyboard_overlay_delegate.h"
8#include "ash/shell.h"
9#include "base/strings/utf_string_conversions.h"
10#include "content/public/browser/browser_context.h"
11#include "grit/ash_strings.h"
12#include "ui/base/l10n/l10n_util.h"
13#include "ui/events/event.h"
14#include "ui/gfx/screen.h"
15#include "ui/views/widget/widget.h"
16#include "ui/web_dialogs/web_dialog_delegate.h"
17
18using ui::WebDialogDelegate;
19
20namespace {
21
22// Keys to invoke Cancel (Escape, Ctrl+Alt+/, or Shift+Ctrl+Alt+/, Help, F14).
23const ash::KeyboardOverlayView::KeyEventData kCancelKeys[] = {
24  { ui::VKEY_ESCAPE, ui::EF_NONE},
25  { ui::VKEY_OEM_2, ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN },
26  { ui::VKEY_OEM_2, ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN },
27  { ui::VKEY_HELP, ui::EF_NONE },
28  { ui::VKEY_F14, ui::EF_NONE },
29};
30
31}
32
33namespace ash {
34
35KeyboardOverlayView::KeyboardOverlayView(
36    content::BrowserContext* context,
37    WebDialogDelegate* delegate,
38    WebContentsHandler* handler)
39    : views::WebDialogView(context, delegate, handler) {
40}
41
42KeyboardOverlayView::~KeyboardOverlayView() {
43}
44
45void KeyboardOverlayView::Cancel() {
46  Shell::GetInstance()->overlay_filter()->Deactivate(this);
47  views::Widget* widget = GetWidget();
48  if (widget)
49    widget->Close();
50}
51
52bool KeyboardOverlayView::IsCancelingKeyEvent(ui::KeyEvent* event) {
53  if (event->type() != ui::ET_KEY_PRESSED)
54    return false;
55  // Ignore the caps lock state.
56  const int flags = (event->flags() & ~ui::EF_CAPS_LOCK_DOWN);
57  for (size_t i = 0; i < arraysize(kCancelKeys); ++i) {
58    if ((kCancelKeys[i].key_code == event->key_code()) &&
59        (kCancelKeys[i].flags == flags))
60      return true;
61  }
62  return false;
63}
64
65aura::Window* KeyboardOverlayView::GetWindow() {
66  return GetWidget()->GetNativeWindow();
67}
68
69// static
70void KeyboardOverlayView::ShowDialog(
71    content::BrowserContext* context,
72    WebContentsHandler* handler,
73    const GURL& url) {
74  if (Shell::GetInstance()->overlay_filter()->IsActive())
75    return;
76
77  KeyboardOverlayDelegate* delegate = new KeyboardOverlayDelegate(
78      l10n_util::GetStringUTF16(IDS_ASH_KEYBOARD_OVERLAY_TITLE), url);
79  KeyboardOverlayView* view =
80      new KeyboardOverlayView(context, delegate, handler);
81  delegate->Show(view);
82
83  Shell::GetInstance()->overlay_filter()->Activate(view);
84}
85
86void KeyboardOverlayView::WindowClosing() {
87  Cancel();
88}
89
90// static
91void KeyboardOverlayView::GetCancelingKeysForTesting(
92    std::vector<KeyboardOverlayView::KeyEventData>* canceling_keys) {
93  CHECK(canceling_keys);
94  canceling_keys->clear();
95  for (size_t i = 0; i < arraysize(kCancelKeys); ++i)
96    canceling_keys->push_back(kCancelKeys[i]);
97}
98
99}  // namespace ash
100