diff options
Diffstat (limited to 'chromium/ash/keyboard_overlay/keyboard_overlay_delegate.cc')
-rw-r--r-- | chromium/ash/keyboard_overlay/keyboard_overlay_delegate.cc | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/chromium/ash/keyboard_overlay/keyboard_overlay_delegate.cc b/chromium/ash/keyboard_overlay/keyboard_overlay_delegate.cc new file mode 100644 index 00000000000..5f0da86d50d --- /dev/null +++ b/chromium/ash/keyboard_overlay/keyboard_overlay_delegate.cc @@ -0,0 +1,149 @@ +// 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 "ash/shell.h" +#include "base/bind.h" +#include "base/memory/weak_ptr.h" +#include "base/strings/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/aura/root_window.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 + +namespace ash { + +KeyboardOverlayDelegate::KeyboardOverlayDelegate(const base::string16& title, + const GURL& url) + : title_(title), + url_(url), + widget_(NULL) { +} + +KeyboardOverlayDelegate::~KeyboardOverlayDelegate() { +} + +views::Widget* KeyboardOverlayDelegate::Show(views::WebDialogView* view) { + widget_ = new views::Widget; + views::Widget::InitParams params( + views::Widget::InitParams::TYPE_WINDOW_FRAMELESS); + params.context = Shell::GetPrimaryRootWindow(); + 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 = Shell::GetScreen()->GetDisplayNearestWindow( + widget_->GetNativeView()).work_area(); + gfx::Rect bounds(rect.x() + (rect.width() - size.width()) / 2, + rect.bottom() - size.height(), + size.width(), + size.height()); + widget_->SetBounds(bounds); + + // The widget will be shown when the web contents gets ready to display. + return widget_; +} + +ui::ModalType KeyboardOverlayDelegate::GetDialogModalType() const { + return ui::MODAL_TYPE_SYSTEM; +} + +base::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(widget_)); +} + +void KeyboardOverlayDelegate::GetDialogSize( + gfx::Size* size) const { + using std::min; + DCHECK(widget_); + gfx::Rect rect = ash::Shell::GetScreen()->GetDisplayNearestWindow( + widget_->GetNativeView()).work_area(); + 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; +} + +} // namespace ash |