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