blob: e819a98147358dd29b87850649f86efb4386b19d [file] [log] [blame]
// 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;
}