// Copyright (c) 2009 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/app_modal_dialog.h"

#include "chrome/browser/app_modal_dialog_queue.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"

AppModalDialog::AppModalDialog(JavaScriptMessageBoxClient* client,
                               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)
    : dialog_(NULL),
      client_(client),
      skip_this_dialog_(false),
      title_(title),
      dialog_flags_(dialog_flags),
      message_text_(message_text),
      default_prompt_text_(default_prompt_text),
      display_suppress_checkbox_(display_suppress_checkbox),
      is_before_unload_dialog_(is_before_unload_dialog),
      reply_msg_(reply_msg) {
  InitNotifications();
}

void AppModalDialog::Observe(NotificationType type,
                             const NotificationSource& source,
                             const NotificationDetails& details) {
  if (skip_this_dialog_)
    return;

  // We only observe our NavigationController for NAV_ENTRY_COMMITTED and our
  // TabContents for TAB_CONTENTS_DESTROYED, both of which indicate that we
  // should ignore this dialog. Also clear the client for good measure, since
  // it's now invalid.
  skip_this_dialog_ = true;
  client_ = NULL;
  CloseModalDialog();
}

void AppModalDialog::SendCloseNotification() {
  NotificationService::current()->Notify(
      NotificationType::APP_MODAL_DIALOG_CLOSED,
      Source<AppModalDialog>(this),
      NotificationService::NoDetails());
}

void AppModalDialog::InitNotifications() {
  // Make sure we get relevant navigation notifications so we know when our
  // parent contents will disappear or navigate to a different page.
  TabContents* tab_contents = client_->AsTabContents();
  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));
  }
}

void AppModalDialog::ShowModalDialog() {
  // If the TabContents that created this dialog navigated away before this
  // dialog became visible, simply show the next dialog if any.
  if (skip_this_dialog_) {
    Singleton<AppModalDialogQueue>()->ShowNextDialog();
    delete this;
    return;
  }
  TabContents* tab_contents = client_->AsTabContents();
  if (tab_contents)
    tab_contents->Activate();

  CreateAndShowDialog();

  NotificationService::current()->Notify(
      NotificationType::APP_MODAL_DIALOG_SHOWN,
      Source<AppModalDialog>(this),
      NotificationService::NoDetails());
}

void AppModalDialog::OnCancel() {
  // 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.
  Singleton<AppModalDialogQueue>()->ShowNextDialog();

  if (!skip_this_dialog_) {
    client_->OnMessageBoxClosed(reply_msg_, false, std::wstring());
  }

  SendCloseNotification();
}

void AppModalDialog::OnAccept(const std::wstring& prompt_text,
                              bool suppress_js_messages) {
  Singleton<AppModalDialogQueue>()->ShowNextDialog();

  if (!skip_this_dialog_) {
    client_->OnMessageBoxClosed(reply_msg_, true, prompt_text);
    if (suppress_js_messages)
      client_->SetSuppressMessageBoxes(true);
  }

  SendCloseNotification();
}

void AppModalDialog::OnClose() {
  SendCloseNotification();
}