C++ CTextureDatabase类代码示例

CStdString CThumbLoader::GetCachedThumb(const CFileItem &item)
{
  CTextureDatabase db;
  if (db.Open())
    return db.GetTextureForPath(item.GetPath());
  return "";
}

bool CTextureCleanupJob::DoWork()
{
  CTextureDatabase db;
  if (db.Open())
  {
    std::string path;
    std::string fn;
    std::string prevPath = "";
    std::vector<std::string> pathContent;

    XFILE::CSpecialProtocolDirectory thumbDir;
    CFileItemList files;
    int fileIdx = 0;
    int totFileDel = 0;
    int totDbDel = 0;

    auto deleteFile = [&]()
    {
      std::string todel = files.Get(fileIdx)->GetPath();
      CLog::Log(LOGDEBUG, "CTextureCleanupJob: deleting %s", todel.c_str());
      XFILE::CFile::Delete(todel);
      totFileDel++;
      fileIdx++;
    };

    std::vector<std::pair<int, std::string>> urls = db.GetCachedTextureUrls();
    for (const auto &url : urls)
    {
      std::string cachedurl = url.second;
      URIUtils::Split(cachedurl, path, fn);
      std::string cmpurl = "special://thumbnails/" + cachedurl;
      if (path != prevPath)
      {
        while (fileIdx < files.Size())
          deleteFile();
        files.Clear();
        thumbDir.GetDirectory(CURL("special://thumbnails/" + path), files);
        files.Sort(SortByPath, SortOrderAscending);
        prevPath = path;
        fileIdx = 0;
      }
      while (fileIdx < files.Size() && files.Get(fileIdx)->GetPath() < cmpurl)
        deleteFile();
      if (fileIdx < files.Size() && files.Get(fileIdx)->GetPath() == cmpurl)
        fileIdx++;
      else
      {
        // No file for current entry; delete it
        CLog::Log(LOGDEBUG, "CTextureCleanupJob: deleting from Db: %d / %s", url.first, cachedurl.c_str());
        db.ClearCachedTexture(url.first, cachedurl);
        totDbDel++;
      }
    }
    while (fileIdx < files.Size())
      deleteFile();
    CLog::Log(LOGDEBUG, "CTextureCleanupJob: %d thumbnails deleted / %d db entries removed", totFileDel, totDbDel);
  }
  return true;
}

bool CPictureThumbLoader::LoadItem(CFileItem* pItem)
{
  if (pItem->m_bIsShareOrDrive) return true;
  if (pItem->IsParentFolder()) return true;

  if (pItem->HasThumbnail() && m_regenerateThumbs)
  {
    CTextureCache::Get().ClearCachedImage(pItem->GetThumbnailImage());
    CTextureDatabase db;
    if (db.Open())
      db.ClearTextureForPath(pItem->GetPath(), "thumb");
    pItem->SetThumbnailImage("");
  }

  CStdString thumb;
  if (pItem->IsPicture() && !pItem->IsZIP() && !pItem->IsRAR() && !pItem->IsCBZ() && !pItem->IsCBR() && !pItem->IsPlayList())
  { // load the thumb from the image file
    thumb = pItem->HasThumbnail() ? pItem->GetThumbnailImage() : CTextureCache::GetWrappedThumbURL(pItem->GetPath());
  }
  else if (pItem->IsVideo() && !pItem->IsZIP() && !pItem->IsRAR() && !pItem->IsCBZ() && !pItem->IsCBR() && !pItem->IsPlayList())
  { // video
    thumb = pItem->GetCachedVideoThumb();
    if (!CFile::Exists(thumb))
    {
      CStdString strPath, strFileName;
      URIUtils::Split(thumb, strPath, strFileName);

      CStdString autoThumb = strPath + "auto-" + strFileName;

      // this is abit of a hack to avoid loading zero sized images
      // which we know will fail. They will just display empty image
      // we should really have some way for the texture loader to
      // do fallbacks to default images for a failed image instead
      if (CFile::Exists(autoThumb))
      {
        thumb = autoThumb;
      }
      else if (g_guiSettings.GetBool("myvideos.extractthumb") && g_guiSettings.GetBool("myvideos.extractflags"))
      {
        CFileItem item(*pItem);
        CThumbExtractor* extract = new CThumbExtractor(item, pItem->GetPath(), true, autoThumb);
        AddJob(extract);
        thumb.clear();
      }
    }
  }
  else if (!pItem->HasThumbnail())
  { // folder, zip, cbz, rar, cbr, playlist may have a previously cached image
    thumb = GetCachedImage(*pItem, "thumb");
  }
  if (!thumb.IsEmpty())
  {
    CTextureCache::Get().BackgroundCacheImage(thumb);
    pItem->SetThumbnailImage(thumb);
  }
  pItem->FillInDefaultIcon();
  return true;
}

bool CTextureUseCountJob::DoWork()
{
  CTextureDatabase db;
  if (db.Open())
  {
    db.BeginTransaction();
    for (std::vector<CTextureDetails>::const_iterator i = m_textures.begin(); i != m_textures.end(); ++i)
      db.IncrementUseCount(*i);
    db.CommitTransaction();
  }
  return true;
}

bool CPictureThumbLoader::LoadItem(CFileItem* pItem)
{
  if (pItem->m_bIsShareOrDrive) return true;
  if (pItem->IsParentFolder()) return true;

  if (pItem->HasThumbnail() && m_regenerateThumbs)
  {
    CTextureCache::Get().ClearCachedImage(pItem->GetThumbnailImage());
    CTextureDatabase db;
    if (db.Open())
      db.ClearTextureForPath(pItem->GetPath(), "thumb");
    pItem->SetThumbnailImage("");
  }

  CStdString thumb;
  if (pItem->IsPicture() && !pItem->IsZIP() && !pItem->IsRAR() && !pItem->IsCBZ() && !pItem->IsCBR() && !pItem->IsPlayList())
  { // load the thumb from the image file
    thumb = pItem->HasThumbnail() ? pItem->GetThumbnailImage() : CTextureCache::GetWrappedThumbURL(pItem->GetPath());
  }
  else if (pItem->IsVideo() && !pItem->IsZIP() && !pItem->IsRAR() && !pItem->IsCBZ() && !pItem->IsCBR() && !pItem->IsPlayList())
  { // video
    if (!CVideoThumbLoader::FillThumb(*pItem))
    {
      CStdString thumbURL = CVideoThumbLoader::GetEmbeddedThumbURL(*pItem);
      CStdString cachedThumb = CTextureCache::Get().GetCachedImage(thumbURL);
      if (!cachedThumb.IsEmpty())
      {
        thumb = thumbURL;
      }
      else if (g_guiSettings.GetBool("myvideos.extractthumb") && g_guiSettings.GetBool("myvideos.extractflags"))
      {
        CFileItem item(*pItem);
        CThumbExtractor* extract = new CThumbExtractor(item, pItem->GetPath(), true, thumbURL);
        AddJob(extract);
        thumb.clear();
      }
    }
  }
  else if (!pItem->HasThumbnail())
  { // folder, zip, cbz, rar, cbr, playlist may have a previously cached image
    thumb = GetCachedImage(*pItem, "thumb");
  }
  if (!thumb.IsEmpty())
  {
    CTextureCache::Get().BackgroundCacheImage(thumb);
    pItem->SetThumbnailImage(thumb);
  }
  pItem->FillInDefaultIcon();
  return true;
}

bool CRepositoryUpdateJob::DoWork()
{
  CLog::Log(LOGDEBUG, "CRepositoryUpdateJob[%s] checking for updates.", m_repo->ID().c_str());
  CAddonDatabase database;
  database.Open();

  std::string oldChecksum;
  if (database.GetRepoChecksum(m_repo->ID(), oldChecksum) == -1)
    oldChecksum = "";

  std::string newChecksum;
  VECADDONS addons;
  auto status = m_repo->FetchIfChanged(oldChecksum, newChecksum, addons);

  database.SetLastChecked(m_repo->ID(), m_repo->Version(),
      CDateTime::GetCurrentDateTime().GetAsDBDateTime());

  MarkFinished();

  if (status == CRepository::STATUS_ERROR)
    return false;

  if (status == CRepository::STATUS_NOT_MODIFIED)
  {
    CLog::Log(LOGDEBUG, "CRepositoryUpdateJob[%s] checksum not changed.", m_repo->ID().c_str());
    return true;
  }

  //Invalidate art.
  {
    CTextureDatabase textureDB;
    textureDB.Open();
    textureDB.BeginMultipleExecute();

    for (const auto& addon : addons)
    {
      AddonPtr oldAddon;
      if (database.GetAddon(addon->ID(), oldAddon) && addon->Version() > oldAddon->Version())
      {
        if (!oldAddon->Icon().empty() || !oldAddon->Art().empty() || !oldAddon->Screenshots().empty())
          CLog::Log(LOGDEBUG, "CRepository: invalidating cached art for '%s'", addon->ID().c_str());

        if (!oldAddon->Icon().empty())
          textureDB.InvalidateCachedTexture(oldAddon->Icon());

        for (const auto& path : oldAddon->Screenshots())
          textureDB.InvalidateCachedTexture(path);

        for (const auto& art : oldAddon->Art())
          textureDB.InvalidateCachedTexture(art.second);
      }
    }
    textureDB.CommitMultipleExecute();
  }

  database.UpdateRepositoryContent(m_repo->ID(), m_repo->Version(), newChecksum, addons);
  return true;
}

void CPictureThumbLoader::ProcessFoldersAndArchives(CFileItem *pItem)
{
  if (pItem->HasThumbnail())
    return;

  CTextureDatabase db;
  db.Open();
  if (pItem->IsCBR() || pItem->IsCBZ())
  {
    CStdString strTBN(URIUtils::ReplaceExtension(pItem->GetPath(),".tbn"));
    if (CFile::Exists(strTBN))
    {
      db.SetTextureForPath(pItem->GetPath(), "thumb", strTBN);
      CTextureCache::Get().BackgroundCacheImage(strTBN);
      pItem->SetThumbnailImage(strTBN);
      return;
    }
  }
  if ((pItem->m_bIsFolder || pItem->IsCBR() || pItem->IsCBZ()) && !pItem->m_bIsShareOrDrive && !pItem->IsParentFolder())
  {
    // first check for a folder.jpg
    CStdString thumb = "folder.jpg";
    CStdString strPath = pItem->GetPath();
    if (pItem->IsCBR())
    {
      URIUtils::CreateArchivePath(strPath,"rar",pItem->GetPath(),"");
      thumb = "cover.jpg";
    }
    if (pItem->IsCBZ())
    {
      URIUtils::CreateArchivePath(strPath,"zip",pItem->GetPath(),"");
      thumb = "cover.jpg";
    }
    if (pItem->IsMultiPath())
      strPath = CMultiPathDirectory::GetFirstPath(pItem->GetPath());
    thumb = URIUtils::AddFileToFolder(strPath, thumb);
    if (CFile::Exists(thumb))
    {
      db.SetTextureForPath(pItem->GetPath(), "thumb", thumb);
      CTextureCache::Get().BackgroundCacheImage(thumb);
      pItem->SetThumbnailImage(thumb);
      return;
    }
    if (!pItem->IsPlugin())
    {
      // we load the directory, grab 4 random thumb files (if available) and then generate
      // the thumb.

      CFileItemList items;

      CDirectory::GetDirectory(strPath, items, g_settings.m_pictureExtensions, DIR_FLAG_NO_FILE_DIRS);
      
      // create the folder thumb by choosing 4 random thumbs within the folder and putting
      // them into one thumb.
      // count the number of images
      for (int i=0; i < items.Size();)
      {
        if (!items[i]->IsPicture() || items[i]->IsZIP() || items[i]->IsRAR() || items[i]->IsPlayList())
        {
          items.Remove(i);
        }
        else
          i++;
      }

      if (items.IsEmpty())
      {
        if (pItem->IsCBZ() || pItem->IsCBR())
        {
          CDirectory::GetDirectory(strPath, items, g_settings.m_pictureExtensions, DIR_FLAG_NO_FILE_DIRS);
          for (int i=0;i<items.Size();++i)
          {
            CFileItemPtr item = items[i];
            if (item->m_bIsFolder)
            {
              ProcessFoldersAndArchives(item.get());
              pItem->SetThumbnailImage(items[i]->GetThumbnailImage());
              pItem->SetIconImage(items[i]->GetIconImage());
              return;
            }
          }
        }
        return; // no images in this folder
      }

      // randomize them
      items.Randomize();

      if (items.Size() < 4 || pItem->IsCBR() || pItem->IsCBZ())
      { // less than 4 items, so just grab the first thumb
        items.Sort(SORT_METHOD_LABEL, SORT_ORDER_ASC);
        CStdString thumb = CTextureCache::GetWrappedThumbURL(items[0]->GetPath());
        db.SetTextureForPath(pItem->GetPath(), "thumb", thumb);
        CTextureCache::Get().BackgroundCacheImage(thumb);
        pItem->SetThumbnailImage(thumb);
      }
      else
      {
        // ok, now we've got the files to get the thumbs from, lets create it...
        // we basically load the 4 images and combine them
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        CFileItemPtr local(new CFileItem("thumb://Local", false));
        local->SetArt("thumb", folderThumb);
        local->SetLabel(g_localizeStrings.Get(20017));
        items.Add(local);
      }
      // and add a "no thumb" entry as well
      CFileItemPtr nothumb(new CFileItem("thumb://None", false));
      nothumb->SetIconImage(item->GetIconImage());
      nothumb->SetLabel(g_localizeStrings.Get(20018));
      items.Add(nothumb);

      std::string strThumb;
      VECSOURCES shares;
      g_mediaManager.GetLocalDrives(shares);
      if (!CGUIDialogFileBrowser::ShowAndGetImage(items, shares, g_localizeStrings.Get(1030), strThumb))
        return false;

      if (strThumb == "thumb://Current")
        return true;

      if (strThumb == "thumb://Local")
        strThumb = folderThumb;

      if (strThumb == "thumb://None")
        strThumb = "";

      if (!share->m_ignore)
      {
        CMediaSourceSettings::GetInstance().UpdateSource(type,share->strName,"thumbnail",strThumb);
        CMediaSourceSettings::GetInstance().Save();
      }
      else if (!strThumb.empty())
      { // this is some sort of an auto-share, so store in the texture database
        CTextureDatabase db;
        if (db.Open())
          db.SetTextureForPath(item->GetPath(), "thumb", strThumb);
      }

      CGUIMessage msg(GUI_MSG_NOTIFY_ALL,0,0,GUI_MSG_UPDATE_SOURCES);
      g_windowManager.SendThreadMessage(msg);
      return true;
    }

  case CONTEXT_BUTTON_ADD_LOCK:
    {
      // prompt user for mastercode when changing lock settings) only for default user
      if (!g_passwordManager.IsMasterLockUnlocked(true))
        return false;

      std::string strNewPassword = "";
      if (!CGUIDialogLockSettings::ShowAndGetLock(share->m_iLockMode,strNewPassword))
        return false;
      // password entry and re-entry succeeded, write out the lock data
      share->m_iHasLock = 2;
      CMediaSourceSettings::GetInstance().UpdateSource(type, share->strName, "lockcode", strNewPassword);
      strNewPassword = StringUtils::Format("%i", share->m_iLockMode);
      CMediaSourceSettings::GetInstance().UpdateSource(type, share->strName, "lockmode", strNewPassword);
      CMediaSourceSettings::GetInstance().UpdateSource(type, share->strName, "badpwdcount", "0");
      CMediaSourceSettings::GetInstance().Save();

      CGUIMessage msg(GUI_MSG_NOTIFY_ALL,0,0,GUI_MSG_UPDATE_SOURCES);
      g_windowManager.SendThreadMessage(msg);
      return true;
    }
  case CONTEXT_BUTTON_RESET_LOCK:
    {

void CPictureThumbLoader::ProcessFoldersAndArchives(CFileItem *pItem)
{
  if (pItem->HasArt("thumb"))
    return;

  CTextureDatabase db;
  db.Open();
  if ((pItem->m_bIsFolder) && !pItem->m_bIsShareOrDrive
      && !pItem->IsParentFolder() && !pItem->IsPath("add"))
  {
    // first check for a folder.jpg
    std::string thumb = "folder.jpg";
    CURL pathToUrl = pItem->GetURL();
    if (pItem->IsMultiPath())
      pathToUrl = CURL(CMultiPathDirectory::GetFirstPath(pItem->GetPath()));
    thumb = URIUtils::AddFileToFolder(pathToUrl.Get(), thumb);
    if (CFile::Exists(thumb))
    {
      db.SetTextureForPath(pItem->GetPath(), "thumb", thumb);
      CTextureCache::GetInstance().BackgroundCacheImage(thumb);
      pItem->SetArt("thumb", thumb);
      return;
    }
    // we load the directory, grab 4 random thumb files (if available) and then generate
    // the thumb.

    CFileItemList items;

    CDirectory::GetDirectory(pathToUrl, items, g_advancedSettings.m_pictureExtensions, DIR_FLAG_NO_FILE_DIRS);
    
    // create the folder thumb by choosing 4 random thumbs within the folder and putting
    // them into one thumb.
    // count the number of images
    for (int i=0; i < items.Size();)
    {
      if (!items[i]->IsPicture() || items[i]->IsPlayList())
      {
        items.Remove(i);
      }
      else
        i++;
    }

    if (items.IsEmpty())
      return; // no images in this folder

    // randomize them
    items.Randomize();

    if (items.Size() < 4)
    { // less than 4 items, so just grab the first thumb
      items.Sort(SortByLabel, SortOrderAscending);
      std::string thumb = CTextureUtils::GetWrappedThumbURL(items[0]->GetPath());
      db.SetTextureForPath(pItem->GetPath(), "thumb", thumb);
      CTextureCache::GetInstance().BackgroundCacheImage(thumb);
      pItem->SetArt("thumb", thumb);
    }
    else
    {
      // ok, now we've got the files to get the thumbs from, lets create it...
      // we basically load the 4 images and combine them
      vector<string> files;
      for (int thumb = 0; thumb < 4; thumb++)
        files.push_back(items[thumb]->GetPath());
      std::string thumb = CTextureUtils::GetWrappedImageURL(pItem->GetPath(), "picturefolder");
      std::string relativeCacheFile = CTextureCache::GetCacheFile(thumb) + ".png";
      if (CPicture::CreateTiledThumb(files, CTextureCache::GetCachedPath(relativeCacheFile)))
      {
        CTextureDetails details;
        details.file = relativeCacheFile;
        details.width = g_advancedSettings.GetThumbSize();
        details.height = g_advancedSettings.GetThumbSize();
        CTextureCache::GetInstance().AddCachedTexture(thumb, details);
        db.SetTextureForPath(pItem->GetPath(), "thumb", thumb);
        pItem->SetArt("thumb", CTextureCache::GetCachedPath(relativeCacheFile));
      }
    }

    // refill in the icon to get it to update
    pItem->FillInDefaultIcon();
  }
}

JSONRPC_STATUS CTextureOperations::GetTextures(const std::string &method, ITransportLayer *transport, IClient *client, const CVariant &parameterObject, CVariant &result)
{
  CFileItemList listItems;

  CTextureDatabase db;
  if (!db.Open())
    return InternalError;

  CDatabase::Filter dbFilter;
  const CVariant &filter = parameterObject["filter"];
  if (filter.isObject())
  {
    CVariant xspObj(CVariant::VariantTypeObject);

    if (filter.isMember("field"))
    {
      xspObj["and"] = CVariant(CVariant::VariantTypeArray);
      xspObj["and"].push_back(filter);
    }
    else
      xspObj = filter;

    // decipher the rules
    CDatabaseQueryRuleCombination rule;
    if (!rule.Load(xspObj, &db))
      return InvalidParams;

    dbFilter.AppendWhere(rule.GetWhereClause(db, ""));
  }

  // fetch textures from the database
  CVariant items = CVariant(CVariant::VariantTypeArray);
  if (!db.GetTextures(items, dbFilter))
    return InternalError;

  // return only what was asked for, plus textureid
  CVariant prop = parameterObject["properties"];
  prop.push_back("textureid");
  if (!items.empty() && prop.isArray())
  {
    std::set<std::string> fields;
    CVariant &item = items[0];
    for (CVariant::const_iterator_map field = item.begin_map(); field != item.end_map(); ++field)
    {
      if (std::find(prop.begin_array(), prop.end_array(), field->first) == prop.end_array())
        fields.insert(field->first);
    }
    // erase these fields
    for (CVariant::iterator_array item = items.begin_array(); item != items.end_array(); ++item)
    {
      for (std::set<std::string>::const_iterator i = fields.begin(); i != fields.end(); ++i)
        item->erase(*i);
    }
    if (fields.find("url") == fields.end())
    {
      // wrap cached url to something retrieval from Files.GetFiles()
      for (CVariant::iterator_array item = items.begin_array(); item != items.end_array(); ++item)
      {
        CVariant &cachedUrl = (*item)["url"];
        cachedUrl = CTextureUtils::GetWrappedImageURL(cachedUrl.asString());
      }
    }
  }

  result["textures"] = items;
  return OK;
}

bool CRepositoryUpdateJob::DoWork()
{
  CLog::Log(LOGDEBUG, "CRepositoryUpdateJob[%s] checking for updates.", m_repo->ID().c_str());
  CAddonDatabase database;
  database.Open();

  std::string oldChecksum;
  if (database.GetRepoChecksum(m_repo->ID(), oldChecksum) == -1)
    oldChecksum = "";

  std::string newChecksum;
  VECADDONS addons;
  auto status = m_repo->FetchIfChanged(oldChecksum, newChecksum, addons);

  database.SetLastChecked(m_repo->ID(), m_repo->Version(),
      CDateTime::GetCurrentDateTime().GetAsDBDateTime());

  MarkFinished();

  if (status == CRepository::STATUS_ERROR)
    return false;

  if (status == CRepository::STATUS_NOT_MODIFIED)
  {
    CLog::Log(LOGDEBUG, "CRepositoryUpdateJob[%s] checksum not changed.", m_repo->ID().c_str());
    return true;
  }

  //Invalidate art.
  {
    CTextureDatabase textureDB;
    textureDB.Open();
    textureDB.BeginMultipleExecute();

    for (const auto& addon : addons)
    {
      AddonPtr oldAddon;
      if (database.GetAddon(addon->ID(), oldAddon) && addon->Version() > oldAddon->Version())
      {
        if (!oldAddon->Icon().empty() || !oldAddon->FanArt().empty() || !oldAddon->Screenshots().empty())
          CLog::Log(LOGDEBUG, "CRepository: invalidating cached art for '%s'", addon->ID().c_str());
        if (!oldAddon->Icon().empty())
          textureDB.InvalidateCachedTexture(oldAddon->Icon());
        if (!oldAddon->FanArt().empty())
          textureDB.InvalidateCachedTexture(oldAddon->Icon());
        for (const auto& path : oldAddon->Screenshots())
          textureDB.InvalidateCachedTexture(path);
      }
    }
    textureDB.CommitMultipleExecute();
  }

  database.UpdateRepositoryContent(m_repo->ID(), m_repo->Version(), newChecksum, addons);

  //Notify about broken status changes
  for (const auto& addon : addons)
  {
    AddonPtr localAddon;
    if (!CAddonMgr::GetInstance().GetAddon(addon->ID(), localAddon))
      continue;

    if (localAddon && localAddon->Version() > addon->Version())
      //We have a newer version locally
      continue;

    AddonPtr oldAddon;
    database.GetAddon(addon->ID(), oldAddon);

    if (database.GetAddonVersion(addon->ID()).first > addon->Version())
      //Newer version in db (ie. in a different repo)
      continue;

    std::string broken = addon->Broken();
    bool isBroken = !addon->Broken().empty();
    bool isBrokenInDb = oldAddon && !oldAddon->Broken().empty();
    if (isBroken && !isBrokenInDb)
    {
      //newly broken
      if (HELPERS::ShowYesNoDialogLines(CVariant{addon->Name()}, CVariant{24096}, CVariant{24097}, CVariant{""})
        == DialogResponse::YES)
      {
        CAddonMgr::GetInstance().DisableAddon(addon->ID());
      }

      CLog::Log(LOGDEBUG, "CRepositoryUpdateJob[%s] addon '%s' marked broken. reason: \"%s\"",
           m_repo->ID().c_str(), addon->ID().c_str(), broken.c_str());

      CEventLog::GetInstance().Add(EventPtr(new CAddonManagementEvent(addon, 24096)));
    }
    else if (!isBroken && isBrokenInDb)
    {
      //Unbroken
      CLog::Log(LOGDEBUG, "CRepositoryUpdateJob[%s] addon '%s' unbroken",
          m_repo->ID().c_str(), addon->ID().c_str());
    }
  }
  return true;
}

//.........这里部分代码省略.........
          }

          CLog::Log(LOGDEBUG, "CVideoLibraryRefreshingJob: user selected item '%s' with URL '%s'", scraperUrl.strTitle.c_str(), scraperUrl.m_url.at(0).m_url.c_str());
        }
      }
      else if (result < 0 || !VIDEO::CVideoInfoScanner::DownloadFailed(GetProgressDialog()))
      {
        failure = true;
        break;
      }
    }

    // if the URL is still empty, check whether or not we're allowed
    // to prompt and ask the user to input a new search title
    if (!hasDetails && scraperUrl.m_url.empty())
    {
      if (IsModal())
      {
        // ask the user to input a title to use
        if (!CGUIKeyboardFactory::ShowAndGetInput(itemTitle, g_localizeStrings.Get(scraper->Content() == CONTENT_TVSHOWS ? 20357 : 16009), false))
          return false;

        // go through the whole process again
        needsRefresh = true;
        continue;
      }

      // nothing else we can do
      failure = true;
      break;
    }

    // before we start downloading all the necessary information cleanup any existing artwork and hashes
    CTextureDatabase textureDb;
    if (textureDb.Open())
    {
      for (const auto& artwork : m_item->GetArt())
        textureDb.InvalidateCachedTexture(artwork.second);

      textureDb.Close();
    }
    m_item->ClearArt();

    // put together the list of items to refresh
    std::string path = m_item->GetPath();
    CFileItemList items;
    if (m_item->HasVideoInfoTag() && m_item->GetVideoInfoTag()->m_iDbId > 0)
    {
      // for a tvshow we need to handle all paths of it
      std::vector<std::string> tvshowPaths;
      if (CMediaTypes::IsMediaType(m_item->GetVideoInfoTag()->m_type, MediaTypeTvShow) && m_refreshAll &&
          db.GetPathsLinkedToTvShow(m_item->GetVideoInfoTag()->m_iDbId, tvshowPaths))
      {
        for (const auto& tvshowPath : tvshowPaths)
        {
          CFileItemPtr tvshowItem(new CFileItem(*m_item->GetVideoInfoTag()));
          tvshowItem->SetPath(tvshowPath);
          items.Add(tvshowItem);
        }
      }
      // otherwise just add a copy of the item
      else
        items.Add(CFileItemPtr(new CFileItem(*m_item->GetVideoInfoTag())));

      // update the path to the real path (instead of a videodb:// one)
      path = m_item->GetVideoInfoTag()->m_strPath;

//.........这里部分代码省略.........
      CStdString strThumb;
      VECSOURCES shares;
      g_mediaManager.GetLocalDrives(shares);
      if (!CGUIDialogFileBrowser::ShowAndGetImage(items, shares, g_localizeStrings.Get(1030), strThumb))
        return false;

      if (strThumb == "thumb://Current")
        return true;

      if (strThumb == "thumb://Local")
        strThumb = folderThumb;

      if (strThumb == "thumb://None")
        strThumb = "";

      if (!share->m_ignore)
      {
        g_settings.UpdateSource(type,share->strName,"thumbnail",strThumb);
        g_settings.SaveSources();
      }
      else if (!strThumb.IsEmpty())
      { // this is some sort of an auto-share, so we have to cache it based on the criteria we use to retrieve them
        CStdString cachedThumb;
        if (type == "music")
        {
          cachedThumb = item->m_strPath;
          URIUtils::RemoveSlashAtEnd(cachedThumb);
          cachedThumb = CUtil::GetCachedMusicThumb(cachedThumb);
        }
        else if (type == "video")
          cachedThumb = item->GetCachedVideoThumb();
        else  // assume "programs"
        { // store the thumb for this share
          CTextureDatabase db;
          if (db.Open())
          {
            cachedThumb = CTextureCache::GetUniqueImage(item->m_strPath, URIUtils::GetExtension(strThumb));
            db.SetTextureForPath(item->m_strPath, cachedThumb);
          }
        }
        XFILE::CFile::Cache(strThumb, cachedThumb);
      }

      CGUIMessage msg(GUI_MSG_NOTIFY_ALL,0,0,GUI_MSG_UPDATE_SOURCES);
      g_windowManager.SendThreadMessage(msg);
      return true;
    }

  case CONTEXT_BUTTON_ADD_LOCK:
    {
      // prompt user for mastercode when changing lock settings) only for default user
      if (!g_passwordManager.IsMasterLockUnlocked(true))
        return false;

      CStdString strNewPassword = "";
      if (!CGUIDialogLockSettings::ShowAndGetLock(share->m_iLockMode,strNewPassword))
        return false;
      // password entry and re-entry succeeded, write out the lock data
      share->m_iHasLock = 2;
      g_settings.UpdateSource(type, share->strName, "lockcode", strNewPassword);
      strNewPassword.Format("%i",share->m_iLockMode);
      g_settings.UpdateSource(type, share->strName, "lockmode", strNewPassword);
      g_settings.UpdateSource(type, share->strName, "badpwdcount", "0");
      g_settings.SaveSources();

      CGUIMessage msg(GUI_MSG_NOTIFY_ALL,0,0,GUI_MSG_UPDATE_SOURCES);