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// Copyright (c) 2010 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/js_modal_dialog.h"
#include "base/string_util.h"
#include "chrome/browser/browser_shutdown.h"
#include "chrome/browser/extensions/extension_host.h"
#include "chrome/browser/native_app_modal_dialog.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/notification_type.h"
#include "ipc/ipc_message.h"
namespace {
// The maximum sizes of various texts passed to us from javascript.
const int kMessageTextMaxSize = 3000;
const int kDefaultPromptTextSize = 2000;
} // namespace
JavaScriptAppModalDialog::JavaScriptAppModalDialog(
JavaScriptAppModalDialogDelegate* delegate,
const std::wstring& title,
int dialog_flags,
const std::wstring& message_text,
const std::wstring& default_prompt_text,
bool display_suppress_checkbox,
bool is_before_unload_dialog,
IPC::Message* reply_msg)
: AppModalDialog(delegate->AsTabContents(), title),
delegate_(delegate),
extension_host_(delegate->AsExtensionHost()),
dialog_flags_(dialog_flags),
display_suppress_checkbox_(display_suppress_checkbox),
is_before_unload_dialog_(is_before_unload_dialog),
reply_msg_(reply_msg) {
// We trim the various parts of the message dialog because otherwise we can
// overflow the message dialog (and crash/hang the GTK+ version).
ElideString(message_text, kMessageTextMaxSize, &message_text_);
ElideString(default_prompt_text, kDefaultPromptTextSize,
&default_prompt_text_);
DCHECK((tab_contents_ != NULL) != (extension_host_ != NULL));
InitNotifications();
}
JavaScriptAppModalDialog::~JavaScriptAppModalDialog() {
}
NativeAppModalDialog* JavaScriptAppModalDialog::CreateNativeDialog() {
gfx::NativeWindow parent_window = tab_contents_ ?
tab_contents_->GetMessageBoxRootWindow() :
extension_host_->GetMessageBoxRootWindow();
return NativeAppModalDialog::CreateNativeJavaScriptPrompt(this,
parent_window);
}
void JavaScriptAppModalDialog::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
if (skip_this_dialog_)
return;
if (NotificationType::EXTENSION_HOST_DESTROYED == type &&
Details<ExtensionHost>(extension_host_) != details)
return;
// If we reach here, we know the notification is relevant to us, either
// because we're only observing applicable sources or because we passed the
// check above. Both of those indicate that we should ignore this dialog.
// Also clear the delegate, since it's now invalid.
skip_this_dialog_ = true;
delegate_ = NULL;
if (native_dialog_)
CloseModalDialog();
}
void JavaScriptAppModalDialog::InitNotifications() {
// Make sure we get relevant navigation notifications so we know when our
// parent contents will disappear or navigate to a different page.
if (tab_contents_) {
registrar_.Add(this, NotificationType::NAV_ENTRY_COMMITTED,
Source<NavigationController>(&tab_contents_->controller()));
registrar_.Add(this, NotificationType::TAB_CONTENTS_DESTROYED,
Source<TabContents>(tab_contents_));
} else if (extension_host_) {
// EXTENSION_HOST_DESTROYED uses the Profile as its source, but we care
// about the ExtensionHost (which is passed in the details).
registrar_.Add(this, NotificationType::EXTENSION_HOST_DESTROYED,
NotificationService::AllSources());
} else {
NOTREACHED();
}
}
void JavaScriptAppModalDialog::OnCancel() {
// If we are shutting down and this is an onbeforeunload dialog, cancel the
// shutdown.
if (is_before_unload_dialog_)
browser_shutdown::SetTryingToQuit(false);
// We need to do this before WM_DESTROY (WindowClosing()) as any parent frame
// will receive its activation messages before this dialog receives
// WM_DESTROY. The parent frame would then try to activate any modal dialogs
// that were still open in the ModalDialogQueue, which would send activation
// back to this one. The framework should be improved to handle this, so this
// is a temporary workaround.
CompleteDialog();
if (!skip_this_dialog_) {
delegate_->OnMessageBoxClosed(reply_msg_, false, std::wstring());
}
Cleanup();
}
void JavaScriptAppModalDialog::OnAccept(const std::wstring& prompt_text,
bool suppress_js_messages) {
CompleteDialog();
if (!skip_this_dialog_) {
delegate_->OnMessageBoxClosed(reply_msg_, true, prompt_text);
if (suppress_js_messages)
delegate_->SetSuppressMessageBoxes(true);
}
Cleanup();
}
void JavaScriptAppModalDialog::OnClose() {
Cleanup();
}
void JavaScriptAppModalDialog::Cleanup() {
if (skip_this_dialog_) {
// We can't use the |delegate_|, because we might be in the process of
// destroying it.
if (tab_contents_)
tab_contents_->OnMessageBoxClosed(reply_msg_, false, L"");
// The extension_host_ will always be a dirty pointer on OS X because the alert
// window will cause the extension popup to close since it is resigning its key
// state, destroying the host. http://crbug.com/29355
#if !defined(OS_MACOSX)
else if (extension_host_)
extension_host_->OnMessageBoxClosed(reply_msg_, false, L"");
else
NOTREACHED();
#endif
}
}
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