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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/message_loop.h"
#include "base/message_loop/message_pump_dispatcher.h"
#include "base/run_loop.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/ui/views/constrained_window_views.h"
#include "grit/generated_resources.h"
#include "ui/aura/client/dispatcher_client.h"
#include "ui/aura/env.h"
#include "ui/aura/window_event_dispatcher.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(OS_WIN)
#include "ui/base/win/message_box_win.h"
#include "ui/views/win/hwnd_util.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 base::RefCounted<SimpleMessageBoxViews> {
public:
SimpleMessageBoxViews(const base::string16& title,
const base::string16& message,
MessageBoxType type,
const base::string16& yes_text,
const base::string16& no_text);
MessageBoxResult result() const { return result_; }
// Overridden from views::DialogDelegate:
virtual int GetDialogButtons() const OVERRIDE;
virtual base::string16 GetDialogButtonLabel(
ui::DialogButton button) const OVERRIDE;
virtual bool Cancel() OVERRIDE;
virtual bool Accept() OVERRIDE;
// Overridden from views::WidgetDelegate:
virtual base::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;
private:
friend class base::RefCounted<SimpleMessageBoxViews>;
virtual ~SimpleMessageBoxViews();
// This terminates the nested message-loop.
void Done();
const base::string16 window_title_;
const MessageBoxType type_;
base::string16 yes_text_;
base::string16 no_text_;
MessageBoxResult result_;
views::MessageBoxView* message_box_view_;
DISALLOW_COPY_AND_ASSIGN(SimpleMessageBoxViews);
};
////////////////////////////////////////////////////////////////////////////////
// SimpleMessageBoxViews, public:
SimpleMessageBoxViews::SimpleMessageBoxViews(const base::string16& title,
const base::string16& message,
MessageBoxType type,
const base::string16& yes_text,
const base::string16& no_text)
: window_title_(title),
type_(type),
yes_text_(yes_text),
no_text_(no_text),
result_(MESSAGE_BOX_RESULT_NO),
message_box_view_(new views::MessageBoxView(
views::MessageBoxView::InitParams(message))) {
AddRef();
if (yes_text_.empty()) {
if (type_ == MESSAGE_BOX_TYPE_QUESTION)
yes_text_ =
l10n_util::GetStringUTF16(IDS_CONFIRM_MESSAGEBOX_YES_BUTTON_LABEL);
else if (type_ == MESSAGE_BOX_TYPE_OK_CANCEL)
yes_text_ = l10n_util::GetStringUTF16(IDS_OK);
else
yes_text_ = l10n_util::GetStringUTF16(IDS_OK);
}
if (no_text_.empty()) {
if (type_ == MESSAGE_BOX_TYPE_QUESTION)
no_text_ =
l10n_util::GetStringUTF16(IDS_CONFIRM_MESSAGEBOX_NO_BUTTON_LABEL);
else if (type_ == MESSAGE_BOX_TYPE_OK_CANCEL)
no_text_ = l10n_util::GetStringUTF16(IDS_CANCEL);
}
}
int SimpleMessageBoxViews::GetDialogButtons() const {
if (type_ == MESSAGE_BOX_TYPE_QUESTION ||
type_ == MESSAGE_BOX_TYPE_OK_CANCEL) {
return ui::DIALOG_BUTTON_OK | ui::DIALOG_BUTTON_CANCEL;
}
return ui::DIALOG_BUTTON_OK;
}
base::string16 SimpleMessageBoxViews::GetDialogButtonLabel(
ui::DialogButton button) const {
if (button == ui::DIALOG_BUTTON_CANCEL)
return no_text_;
return yes_text_;
}
bool SimpleMessageBoxViews::Cancel() {
result_ = MESSAGE_BOX_RESULT_NO;
Done();
return true;
}
bool SimpleMessageBoxViews::Accept() {
result_ = MESSAGE_BOX_RESULT_YES;
Done();
return true;
}
base::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();
}
////////////////////////////////////////////////////////////////////////////////
// SimpleMessageBoxViews, private:
SimpleMessageBoxViews::~SimpleMessageBoxViews() {
}
void SimpleMessageBoxViews::Done() {
aura::Window* window = GetWidget()->GetNativeView();
aura::client::DispatcherClient* client =
aura::client::GetDispatcherClient(window->GetRootWindow());
client->QuitNestedMessageLoop();
}
#if defined(OS_WIN)
UINT GetMessageBoxFlagsFromType(MessageBoxType type) {
UINT flags = MB_SETFOREGROUND;
switch (type) {
case MESSAGE_BOX_TYPE_INFORMATION:
return flags | MB_OK | MB_ICONINFORMATION;
case MESSAGE_BOX_TYPE_WARNING:
return flags | MB_OK | MB_ICONWARNING;
case MESSAGE_BOX_TYPE_QUESTION:
return flags | MB_YESNO | MB_ICONQUESTION;
case MESSAGE_BOX_TYPE_OK_CANCEL:
return flags | MB_OKCANCEL | MB_ICONWARNING;
}
NOTREACHED();
return flags | MB_OK | MB_ICONWARNING;
}
#endif
MessageBoxResult ShowMessageBoxImpl(gfx::NativeWindow parent,
const base::string16& title,
const base::string16& message,
MessageBoxType type,
const base::string16& yes_text,
const base::string16& no_text) {
#if defined(OS_WIN)
// GPU-based dialogs can't be used early on; fallback to a Windows MessageBox.
if (!ui::ContextFactory::GetInstance()) {
int result = ui::MessageBox(views::HWNDForNativeWindow(parent), message,
title, GetMessageBoxFlagsFromType(type));
return (result == IDYES || result == IDOK) ?
MESSAGE_BOX_RESULT_YES : MESSAGE_BOX_RESULT_NO;
}
#endif
scoped_refptr<SimpleMessageBoxViews> dialog(
new SimpleMessageBoxViews(title, message, type, yes_text, no_text));
CreateBrowserModalDialogViews(dialog.get(), parent)->Show();
// 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 = dialog->GetWidget()->GetNativeWindow();
aura::client::DispatcherClient* client =
aura::client::GetDispatcherClient(anchor->GetRootWindow());
client->RunWithDispatcher(NULL, anchor);
return dialog->result();
}
} // namespace
MessageBoxResult ShowMessageBox(gfx::NativeWindow parent,
const base::string16& title,
const base::string16& message,
MessageBoxType type) {
return ShowMessageBoxImpl(
parent, title, message, type, base::string16(), base::string16());
}
MessageBoxResult ShowMessageBoxWithButtonText(gfx::NativeWindow parent,
const base::string16& title,
const base::string16& message,
const base::string16& yes_text,
const base::string16& no_text) {
return ShowMessageBoxImpl(
parent, title, message, MESSAGE_BOX_TYPE_QUESTION, yes_text, no_text);
}
} // namespace chrome
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