public async void LaunchSearch(string albumName)
{
if (State != CoverSearchState.Wait)
throw new InvalidOperationException("New search can't be launch while another is processing or canceled.");
_searchResult = new CoverSearchResult();
if (string.IsNullOrEmpty(albumName))
return;
_cancellationTokenSource = new CancellationTokenSource();
CancellationToken ct = _cancellationTokenSource.Token;
IEnumerable<CoversGallery> galleries = _galleryManager.GetAllComponentsInChildren<CoversGallery>().ToList();
var status = new CoverSearchStatus
{
Progress = 0,
SearchResult = new CoverSearchResult(),
GalleryName = galleries.ElementAt(0).Name,
Cached = true
};
State = CoverSearchState.Search;
Logger.Info("Search launched : {0}", albumName);
if (SearchLaunch != null)
SearchLaunch.Invoke(this, EventArgs.Empty);
int localCount = 0;
int onlineCount = 0;
int cacheCount = 0;
foreach (ICoversGallery coversGallery in galleries)
{
if (!coversGallery.Enabled)
continue;
if (coversGallery is LocalGallery)
localCount++;
else
{
onlineCount++;
if (coversGallery is OnlineGallery && (coversGallery as OnlineGallery).UseCache)
cacheCount++;
}
}
Logger.Info("Galleries enabled: {0} local, {1} online, {2} cache", localCount, onlineCount, cacheCount);
int galleryCount = localCount + onlineCount + cacheCount;
try
{
ct.ThrowIfCancellationRequested();
ReportProgress(status);
double countProgress = 0;
int i = 0;
foreach (ICoversGallery gallery in galleries)
{
if (gallery.Enabled && gallery is OnlineGallery && (gallery as OnlineGallery).UseCache)
{
status.Progress = countProgress / galleryCount;
status.GalleryName = galleries.ElementAt(i).Name + " (cache)";
status.SearchResult = new CoverSearchResult();
ReportProgress(status);
Logger.Info("Next gallery : {0}", status.GalleryName);
CoverEntry entry = (gallery as OnlineGallery).SearchCached(albumName);
status.SearchResult = new CoverSearchResult();
if (entry != null)
{
status.SearchResult.Add(entry);
_searchResult.Add(entry);
Logger.Info("Cached entry found");
}
else
Logger.Info("No cached entry");
i++;
countProgress++;
status.Progress = countProgress / galleryCount;
ReportProgress(status);
}
ct.ThrowIfCancellationRequested();
}
i = 0;
status.Cached = false;
foreach (ICoversGallery gallery in galleries)
{
if (gallery.Enabled)
{
status.Progress = countProgress / galleryCount;
status.GalleryName = galleries.ElementAt(i).Name;
status.SearchResult = new CoverSearchResult();
ReportProgress(status);
Logger.Info("Next gallery : {0}", status.GalleryName);
status.SearchResult = gallery is OnlineGallery
? await (gallery as OnlineGallery).SearchOnlineAsync(albumName, _cancellationTokenSource.Token)
: await gallery.SearchAsync(albumName, _cancellationTokenSource.Token);
foreach (CoverEntry entry in status.SearchResult)
_searchResult.Add(entry);
Logger.Info("{0} entries found", status.SearchResult.Count);
i++;
countProgress++;
status.Progress = countProgress / galleryCount;
ReportProgress(status);
}
ct.ThrowIfCancellationRequested();
}
Logger.Info("Search succeeded");
if (SearchSuccess != null)
SearchSuccess.Invoke(this, EventArgs.Empty);
}
catch (OperationCanceledException)
{
}
catch (Exception e)
{
var args = new SearchErrorEventArgs
{
ErrorMessage = e.Message
};
Logger.Error(e.Message);
if (SearchError != null)
SearchError.Invoke(this, args);
}
finally
{
State = CoverSearchState.Wait;
Logger.Info("Search ended");
if (SearchEnd != null)
SearchEnd.Invoke(this, EventArgs.Empty);
}
}
public void SearchProgress(CoverSearchStatus searchStatus)
{
_searchProgressBar.Value = (int)(searchStatus.Progress * 100);
_statusLabel.Text = string.Format("Search in {0}...", searchStatus.GalleryName);
bool firstCached = false;
ListViewGroup group = null;
if (!searchStatus.Cached)
group = _listView.Groups.Add(searchStatus.GalleryName, searchStatus.GalleryName);
foreach (CoverEntry entry in searchStatus.SearchResult)
{
if (searchStatus.Cached && _listView.Groups["Cached"].Items.Count == 0)
firstCached = true;
ListViewItem item = searchStatus.Cached
? new ListViewItem(entry.GalleryName, _listView.Groups["Cached"])
: new ListViewItem(entry.Name, group);
_imageList.Images.Add(entry.Cover);
item.ImageIndex = _imageList.Images.Count - 1;
_listView.Items.Add(item);
}
if (firstCached)
_listView.Items[2].Selected = true;
_listView.AutoResizeColumn(0, ColumnHeaderAutoResizeStyle.ColumnContent);
}
private void ReportProgress(CoverSearchStatus coverSearchStatus)
{
var args = new SearchProgressEventArgs
{
Status = coverSearchStatus
};
if (SearchProgress != null)
SearchProgress.Invoke(this, args);
}
