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

The original CL broke win_aura, which is fixed in this CL.

This reverts commit b36e66174d685a4195d7cc934d978086e033a8c4.

TBR=ben@chromium.org
BUG=124222
TEST=None

Review URL: https://chromiumcodereview.appspot.com/10824023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148428 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 143 insertions, 0 deletions

diff --git a/ash/keyboard_overlay/keyboard_overlay_delegate.cc b/ash/keyboard_overlay/keyboard_overlay_delegate.cc
new file mode 100644
index 0000000..e819a98
--- /dev/null
+++ b/ash/keyboard_overlay/keyboard_overlay_delegate.cc
@@ -0,0 +1,143 @@
+// 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_delegate.h"
+
+#include <algorithm>
+
+#include "base/bind.h"
+#include "base/memory/weak_ptr.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "content/public/browser/web_ui.h"
+#include "content/public/browser/web_ui_message_handler.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/gfx/screen.h"
+#include "ui/views/controls/webview/web_dialog_view.h"
+#include "ui/views/widget/widget.h"
+
+using content::WebContents;
+using content::WebUIMessageHandler;
+
+namespace {
+
+const int kBaseWidth = 1252;
+const int kBaseHeight = 516;
+const int kHorizontalMargin = 28;
+
+// A message handler for detecting the timing when the web contents is painted.
+class PaintMessageHandler
+    : public WebUIMessageHandler,
+      public base::SupportsWeakPtr<PaintMessageHandler> {
+ public:
+  explicit PaintMessageHandler(views::Widget* widget) : widget_(widget) {}
+  virtual ~PaintMessageHandler() {}
+
+  // WebUIMessageHandler implementation.
+  virtual void RegisterMessages() OVERRIDE;
+
+ private:
+  void DidPaint(const ListValue* args);
+
+  views::Widget* widget_;
+
+  DISALLOW_COPY_AND_ASSIGN(PaintMessageHandler);
+};
+
+void PaintMessageHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(
+      "didPaint",
+      base::Bind(&PaintMessageHandler::DidPaint, base::Unretained(this)));
+}
+
+void PaintMessageHandler::DidPaint(const ListValue* args) {
+  // Show the widget after the web content has been painted.
+  widget_->Show();
+}
+
+}  // namespace
+
+KeyboardOverlayDelegate::KeyboardOverlayDelegate(const string16& title,
+                                                 const GURL& url)
+    : title_(title),
+      url_(url),
+      view_(NULL) {
+}
+
+KeyboardOverlayDelegate::~KeyboardOverlayDelegate() {
+}
+
+void KeyboardOverlayDelegate::Show(views::WebDialogView* view) {
+  view_ = view;
+
+  views::Widget* widget = new views::Widget;
+  views::Widget::InitParams params(
+      views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
+  params.delegate = view;
+  widget->Init(params);
+
+  // Show the widget at the bottom of the work area.
+  gfx::Size size;
+  GetDialogSize(&size);
+  const gfx::Rect& rect = gfx::Screen::GetDisplayNearestWindow(
+      widget->GetNativeView()).work_area();
+  gfx::Rect bounds((rect.width() - size.width()) / 2,
+                   rect.height() - size.height(),
+                   size.width(),
+                   size.height());
+  widget->SetBounds(bounds);
+
+  // The widget will be shown when the web contents gets ready to display.
+}
+
+ui::ModalType KeyboardOverlayDelegate::GetDialogModalType() const {
+  return ui::MODAL_TYPE_SYSTEM;
+}
+
+string16 KeyboardOverlayDelegate::GetDialogTitle() const {
+  return title_;
+}
+
+GURL KeyboardOverlayDelegate::GetDialogContentURL() const {
+  return url_;
+}
+
+void KeyboardOverlayDelegate::GetWebUIMessageHandlers(
+    std::vector<WebUIMessageHandler*>* handlers) const {
+  handlers->push_back(new PaintMessageHandler(view_->GetWidget()));
+}
+
+void KeyboardOverlayDelegate::GetDialogSize(
+    gfx::Size* size) const {
+  using std::min;
+  DCHECK(view_);
+  gfx::Rect rect = gfx::Screen::GetDisplayNearestWindow(
+      view_->GetWidget()->GetNativeView()).bounds();
+  const int width = min(kBaseWidth, rect.width() - kHorizontalMargin);
+  const int height = width * kBaseHeight / kBaseWidth;
+  size->SetSize(width, height);
+}
+
+std::string KeyboardOverlayDelegate::GetDialogArgs() const {
+  return "[]";
+}
+
+void KeyboardOverlayDelegate::OnDialogClosed(
+    const std::string& json_retval) {
+  delete this;
+  return;
+}
+
+void KeyboardOverlayDelegate::OnCloseContents(WebContents* source,
+                                              bool* out_close_dialog) {
+}
+
+bool KeyboardOverlayDelegate::ShouldShowDialogTitle() const {
+  return false;
+}
+
+bool KeyboardOverlayDelegate::HandleContextMenu(
+    const content::ContextMenuParams& params) {
+  return true;
+}