Revert "Revert 148383 - Move the keyboard overlay view to ash."

ash/keyboard_overlay/keyboard_overlay_view.cc

+// Copyright (c) 2012 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 "ash/keyboard_overlay/keyboard_overlay_view.h"
+
+#include "ash/keyboard_overlay/keyboard_overlay_delegate.h"
+#include "base/utf_string_conversions.h"
+#include "content/public/browser/browser_context.h"
+#include "grit/ash_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/gfx/screen.h"
+#include "ui/views/widget/widget.h"
+#include "ui/web_dialogs/web_dialog_delegate.h"
+
+using ui::WebDialogDelegate;
+
+namespace {
+// Store the pointer to the view currently shown.
+KeyboardOverlayView* g_instance = NULL;
+}
+
+KeyboardOverlayView::KeyboardOverlayView(
+    content::BrowserContext* context,
+    WebDialogDelegate* delegate,
+    WebContentsHandler* handler)
+    : views::WebDialogView(context, delegate, handler) {
+}
+
+KeyboardOverlayView::~KeyboardOverlayView() {
+}
+
+void KeyboardOverlayView::ShowDialog(
+    content::BrowserContext* context,
+    WebContentsHandler* handler,
+    const GURL& url) {
+  // Ignore the call if another view is already shown.
+  if (g_instance)
+    return;
+
+  KeyboardOverlayDelegate* delegate = new KeyboardOverlayDelegate(
+      l10n_util::GetStringUTF16(IDS_ASH_KEYBOARD_OVERLAY_TITLE), url);
+  KeyboardOverlayView* view =
+      new KeyboardOverlayView(context, delegate, handler);
+  delegate->Show(view);
+
+  g_instance = view;
+}
+
+void KeyboardOverlayView::WindowClosing() {
+  g_instance = NULL;
+}