ash/keyboard_overlay/keyboard_overlay_view.cc

   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
  18 using ui::WebDialogDelegate;
  19
  20 namespace {
  21
  22 // Keys to invoke Cancel (Escape, Ctrl+Alt+/, or Shift+Ctrl+Alt+/, Help, F14).
  23 const 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
  33 namespace ash {
  34
  35 KeyboardOverlayView::KeyboardOverlayView(
  36     content::BrowserContext* context,
  37     WebDialogDelegate* delegate,
  38     WebContentsHandler* handler)
  39     : views::WebDialogView(context, delegate, handler) {
  40 }
  41
  42 KeyboardOverlayView::~KeyboardOverlayView() {
  43 }
  44
  45 void KeyboardOverlayView::Cancel() {
  46   Shell::GetInstance()->overlay_filter()->Deactivate();
  47   views::Widget* widget = GetWidget();
  48   if (widget)
  49     widget->Close();
  50 }
  51
  52 bool 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
  65 aura::Window* KeyboardOverlayView::GetWindow() {
  66   return GetWidget()->GetNativeWindow();
  67 }
  68
  69 void KeyboardOverlayView::ShowDialog(
  70     content::BrowserContext* context,
  71     WebContentsHandler* handler,
  72     const GURL& url) {
  73   KeyboardOverlayDelegate* delegate = new KeyboardOverlayDelegate(
  74       l10n_util::GetStringUTF16(IDS_ASH_KEYBOARD_OVERLAY_TITLE), url);
  75   KeyboardOverlayView* view =
  76       new KeyboardOverlayView(context, delegate, handler);
  77   delegate->Show(view);
  78
  79   Shell::GetInstance()->overlay_filter()->Activate(view);
  80 }
  81
  82 void KeyboardOverlayView::WindowClosing() {
  83   Cancel();
  84 }
  85
  86 // static
  87 void KeyboardOverlayView::GetCancelingKeysForTesting(
  88     std::vector<KeyboardOverlayView::KeyEventData>* canceling_keys) {
  89   CHECK(canceling_keys);
  90   canceling_keys->clear();
  91   for (size_t i = 0; i < arraysize(kCancelKeys); ++i)
  92     canceling_keys->push_back(kCancelKeys[i]);
  93 }
  94
  95 }  // namespace ash