// Copyright 2016 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.

module translate.mojom;

import "mojo/public/mojom/base/time.mojom";
import "mojo/public/mojom/base/string16.mojom";
import "url/mojom/url.mojom";

enum TranslateError {
  NONE,
  NETWORK,
  INITIALIZATION_ERROR,
  UNKNOWN_LANGUAGE,
  UNSUPPORTED_LANGUAGE,
  IDENTICAL_LANGUAGES,
  TRANSLATION_ERROR,
  TRANSLATION_TIMEOUT,
  UNEXPECTED_SCRIPT_ERROR,
  BAD_ORIGIN,
  SCRIPT_LOAD_ERROR,
  TRANSLATE_ERROR_MAX,
};

struct LanguageDetectionDetails {
  mojo_base.mojom.Time time;
  url.mojom.Url url;
  string content_language;
  string cld_language;
  bool is_cld_reliable;
  bool has_notranslate;
  string html_root_language;
  string adopted_language;
  mojo_base.mojom.String16 contents;
};

interface Page {
  // Requests that the page be translated from |source_lang| to
  // |target_lang|.
  //
  // If a Translate request is already in progress with a matching
  // |target_lang|, this request will respond with |cancelled| set
  // to |true|.
  //
  // If a Translate request is already in progress with a different
  // |target_lang|, that request will respond with |cancelled| set
  // to |true| and this request will proceed normally.
  //
  // If |cancelled| is |true| all other response values should be
  // ignored.
  Translate(string translate_script, string source_lang, string target_lang)
      => (bool cancelled, string original_lang, string translated_lang,
          TranslateError error);

  // Requests that the page be reverted to its original language with
  // no translation applied.
  RevertTranslation();
};

interface ContentTranslateDriver {
  // Notification that a new page is ready to translate,
  // and the language for it has been determined.
  RegisterPage(Page page, LanguageDetectionDetails details,
               bool page_needs_translation);
};