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// 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 "chrome/browser/ui/simple_message_box.h"
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop.h"
#include "base/run_loop.h"
#include "chrome/browser/browser_process.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/views/controls/message_box_view.h"
#include "ui/views/widget/widget.h"
#include "ui/views/window/dialog_delegate.h"
#if defined(USE_AURA)
#include "ui/aura/client/dispatcher_client.h"
#include "ui/aura/env.h"
#include "ui/aura/root_window.h"
#endif
namespace chrome {
namespace {
// Multiple SimpleMessageBoxViews can show up at the same time. Each of these
// start a nested message-loop. However, these SimpleMessageBoxViews can be
// deleted in any order. This creates problems if a box in an inner-loop gets
// destroyed before a box in an outer-loop. So to avoid this, ref-counting is
// used so that the SimpleMessageBoxViews gets deleted at the right time.
class SimpleMessageBoxViews : public views::DialogDelegate,
public MessageLoop::Dispatcher,
public base::RefCounted<SimpleMessageBoxViews> {
public:
SimpleMessageBoxViews(const string16& title,
const string16& message,
MessageBoxType type);
MessageBoxResult result() const { return result_; }
// Overridden from views::DialogDelegate:
virtual int GetDialogButtons() const OVERRIDE;
virtual string16 GetDialogButtonLabel(ui::DialogButton button) const OVERRIDE;
virtual bool Cancel() OVERRIDE;
virtual bool Accept() OVERRIDE;
// Overridden from views::WidgetDelegate:
virtual string16 GetWindowTitle() const OVERRIDE;
virtual void DeleteDelegate() OVERRIDE;
virtual ui::ModalType GetModalType() const OVERRIDE;
virtual views::View* GetContentsView() OVERRIDE;
virtual views::Widget* GetWidget() OVERRIDE;
virtual const views::Widget* GetWidget() const OVERRIDE;
// Overridden from MessageLoop::Dispatcher:
virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
private:
friend class base::RefCounted<SimpleMessageBoxViews>;
virtual ~SimpleMessageBoxViews();
const string16 window_title_;
const MessageBoxType type_;
MessageBoxResult result_;
views::MessageBoxView* message_box_view_;
// Set to false as soon as the user clicks a dialog button; this tells the
// dispatcher we're done.
bool should_show_dialog_;
DISALLOW_COPY_AND_ASSIGN(SimpleMessageBoxViews);
};
////////////////////////////////////////////////////////////////////////////////
// SimpleMessageBoxViews, public:
SimpleMessageBoxViews::SimpleMessageBoxViews(const string16& title,
const string16& message,
MessageBoxType type)
: window_title_(title),
type_(type),
result_(MESSAGE_BOX_RESULT_NO),
message_box_view_(new views::MessageBoxView(
views::MessageBoxView::InitParams(message))),
should_show_dialog_(true) {
AddRef();
}
int SimpleMessageBoxViews::GetDialogButtons() const {
if (type_ == MESSAGE_BOX_TYPE_QUESTION)
return ui::DIALOG_BUTTON_OK | ui::DIALOG_BUTTON_CANCEL;
return ui::DIALOG_BUTTON_OK;
}
string16 SimpleMessageBoxViews::GetDialogButtonLabel(
ui::DialogButton button) const {
if (type_ == MESSAGE_BOX_TYPE_QUESTION) {
return l10n_util::GetStringUTF16((button == ui::DIALOG_BUTTON_OK) ?
IDS_CONFIRM_MESSAGEBOX_YES_BUTTON_LABEL :
IDS_CONFIRM_MESSAGEBOX_NO_BUTTON_LABEL);
}
return l10n_util::GetStringUTF16(IDS_OK);
}
bool SimpleMessageBoxViews::Cancel() {
should_show_dialog_= false;
result_ = MESSAGE_BOX_RESULT_NO;
return true;
}
bool SimpleMessageBoxViews::Accept() {
should_show_dialog_ = false;
result_ = MESSAGE_BOX_RESULT_YES;
return true;
}
string16 SimpleMessageBoxViews::GetWindowTitle() const {
return window_title_;
}
void SimpleMessageBoxViews::DeleteDelegate() {
Release();
}
ui::ModalType SimpleMessageBoxViews::GetModalType() const {
return ui::MODAL_TYPE_WINDOW;
}
views::View* SimpleMessageBoxViews::GetContentsView() {
return message_box_view_;
}
views::Widget* SimpleMessageBoxViews::GetWidget() {
return message_box_view_->GetWidget();
}
const views::Widget* SimpleMessageBoxViews::GetWidget() const {
return message_box_view_->GetWidget();
}
bool SimpleMessageBoxViews::Dispatch(const base::NativeEvent& event) {
#if defined(OS_WIN)
TranslateMessage(&event);
DispatchMessage(&event);
#elif defined(USE_AURA)
aura::Env::GetInstance()->GetDispatcher()->Dispatch(event);
#endif
return should_show_dialog_;
}
////////////////////////////////////////////////////////////////////////////////
// SimpleMessageBoxViews, private:
SimpleMessageBoxViews::~SimpleMessageBoxViews() {
}
} // namespace
MessageBoxResult ShowMessageBox(gfx::NativeWindow parent,
const string16& title,
const string16& message,
MessageBoxType type) {
scoped_refptr<SimpleMessageBoxViews> dialog(
new SimpleMessageBoxViews(title, message, type));
views::Widget::CreateWindowWithParent(dialog, parent)->Show();
#if defined(USE_AURA)
// Use the widget's window itself so that the message loop
// exists when the dialog is closed by some other means than
// |Cancel| or |Accept|.
aura::Window* anchor = parent ?
parent : dialog->GetWidget()->GetNativeWindow();
aura::client::GetDispatcherClient(anchor->GetRootWindow())->
RunWithDispatcher(dialog, anchor, true);
#else
{
MessageLoop::ScopedNestableTaskAllower allow(MessageLoopForUI::current());
base::RunLoop run_loop(dialog);
run_loop.Run();
}
#endif
return dialog->result();
}
} // namespace chrome
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