// 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/translate/options_menu_model.h"

#include "app/l10n_util.h"
#include "base/histogram.h"
#include "chrome/app/chrome_dll_resource.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/translate/translate_infobar_delegate.h"
#include "grit/generated_resources.h"
#include "grit/locale_settings.h"

OptionsMenuModel::OptionsMenuModel(
    TranslateInfoBarDelegate* translate_delegate)
    : ALLOW_THIS_IN_INITIALIZER_LIST(menus::SimpleMenuModel(this)),
      translate_infobar_delegate_(translate_delegate) {
  string16 original_language = translate_delegate->GetLanguageDisplayableNameAt(
      translate_delegate->original_language_index());
  string16 target_language = translate_delegate->GetLanguageDisplayableNameAt(
      translate_delegate->target_language_index());

  // Populate the menu.
  AddCheckItem(IDC_TRANSLATE_OPTIONS_ALWAYS,
      l10n_util::GetStringFUTF16(IDS_TRANSLATE_INFOBAR_OPTIONS_ALWAYS,
          original_language, target_language));
  AddCheckItem(IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_LANG,
      l10n_util::GetStringFUTF16(
          IDS_TRANSLATE_INFOBAR_OPTIONS_NEVER_TRANSLATE_LANG,
          original_language));
  AddCheckItem(IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_SITE,
      l10n_util::GetStringUTF16(
          IDS_TRANSLATE_INFOBAR_OPTIONS_NEVER_TRANSLATE_SITE));
  AddSeparator();
  AddItem(IDC_TRANSLATE_REPORT_BAD_LANGUAGE_DETECTION,
          l10n_util::GetStringFUTF16(IDS_TRANSLATE_INFOBAR_OPTIONS_REPORT_ERROR,
                                     original_language));
  AddItemWithStringId(IDC_TRANSLATE_OPTIONS_ABOUT,
      IDS_TRANSLATE_INFOBAR_OPTIONS_ABOUT);
}

OptionsMenuModel::~OptionsMenuModel() {
}

bool OptionsMenuModel::IsCommandIdChecked(int command_id) const {
  switch (command_id) {
    case IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_LANG:
      return translate_infobar_delegate_->IsLanguageBlacklisted();

    case IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_SITE:
      return translate_infobar_delegate_->IsSiteBlacklisted();

    case IDC_TRANSLATE_OPTIONS_ALWAYS:
      return translate_infobar_delegate_->ShouldAlwaysTranslate();

    default:
      NOTREACHED() << "Invalid command_id from menu";
      break;
  }
  return false;
}

bool OptionsMenuModel::IsCommandIdEnabled(int command_id) const {
  switch (command_id) {
    case IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_LANG :
    case IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_SITE :
      return !translate_infobar_delegate_->ShouldAlwaysTranslate();

    case IDC_TRANSLATE_OPTIONS_ALWAYS :
      return (!translate_infobar_delegate_->IsLanguageBlacklisted() &&
          !translate_infobar_delegate_->IsSiteBlacklisted());

    default:
      break;
  }
  return true;
}

bool OptionsMenuModel::GetAcceleratorForCommandId(
    int command_id, menus::Accelerator* accelerator) {
  return false;
}

void OptionsMenuModel::ExecuteCommand(int command_id) {
  switch (command_id) {
    case IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_LANG:
      UMA_HISTOGRAM_COUNTS("Translate.NeverTranslateLang", 1);
      translate_infobar_delegate_->ToggleLanguageBlacklist();
      break;

    case IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_SITE:
      UMA_HISTOGRAM_COUNTS("Translate.NeverTranslateSite", 1);
      translate_infobar_delegate_->ToggleSiteBlacklist();
      break;

    case IDC_TRANSLATE_OPTIONS_ALWAYS:
      UMA_HISTOGRAM_COUNTS("Translate.AlwaysTranslateLang", 1);
      translate_infobar_delegate_->ToggleAlwaysTranslate();
      break;

    case IDC_TRANSLATE_REPORT_BAD_LANGUAGE_DETECTION:
      translate_infobar_delegate_->ReportLanguageDetectionError();
      break;

    case IDC_TRANSLATE_OPTIONS_ABOUT: {
      TabContents* tab_contents = translate_infobar_delegate_->tab_contents();
      if (tab_contents) {
        string16 url = l10n_util::GetStringUTF16(
            IDS_ABOUT_GOOGLE_TRANSLATE_URL);
        tab_contents->OpenURL(GURL(url), GURL(), NEW_FOREGROUND_TAB,
            PageTransition::LINK);
      }
      break;
    }

    default:
      NOTREACHED() << "Invalid command id from menu.";
      break;
  }
}