/// <summary>
/// Initializes a new instance of the <see cref="WorkspaceViewModel" /> class.
/// </summary>
/// <param name="workspace">The workspace for the view model.</param>
public WorkspaceViewModel(Workspace workspace)
{
Workspace = workspace;
Name = Workspace.Name;
PlaylistUrl = workspace.Settings.PlaylistUrl;
DownloadingAllSongsText = Resources.MainWindow_CurrentWorkspace_SyncButtonLabel;
SearchTextboxWatermark = Resources.MainWindow_CurrentWorkspace_SearchWatermarkDefault;
Tracks = new ObservableImmutableList <PlaylistItemViewModel>();
Tracks.CollectionChanged += TracksOnCollectionChanged;
DisplayedTracks = new ObservableImmutableList <PlaylistItemViewModel>();
PageSelectorViewModel = new PageSelectorViewModel(this);
DownloadManager = new DownloadManager(Settings.Default.ParallelDownloads);
WorkspaceSettingsViewModel = new WorkspaceSettingsViewModel(this);
DisplayedTracksSource = new List <PlaylistItemViewModel>();
Workspace.Settings.PropertyChanged += SettingsOnPropertyChanged;
FilterModes = new Dictionary <FilterMode, string>();
Settings.Default.PropertyChanged += ApplicationSettingsOnPropertyChanged;
_watcher = new FileSystemWatcher
{
Path = Workspace.Path,
NotifyFilter = NotifyFilters.FileName,
Filter = "*.*"
};
_watcher.Created += WatcherOnCreated;
_watcher.Deleted += WatcherOnDeleted;
_watcher.Renamed += WatcherOnRenamed;
_watcher.Error += WatcherOnError;
SetupFilter();
}
/// <summary>
/// Updates the tracklist.
/// Compares old and new songs. Removes all songs which are not in the fetched playlist and adds all songs which are
/// new in the playlist.
/// </summary>
private void UpdateTracks()
{
DisplayedTracksSource.Clear();
// Get playlist items from the viewmodel collection
var tracks = Tracks.Select(t => t.Item).ToList();
// Determinite items that should be added and removed
var playlistItems = tracks.ToArray();
var addItems = Workspace.Settings.Items.Except(playlistItems).ToList();
var removeItems = playlistItems.Except(Workspace.Settings.Items).ToList();
// if (Tracks.Count == 0)
addItems.Reverse();
// Remove the specified items
Tracks.RemoveAll(item => removeItems.Contains(item.Item));
// Add the new items
foreach (var item in addItems)
{
Tracks.Insert(0, new PlaylistItemViewModel(item, this));
}
var i = 1;
DownloadedTracks = 0;
foreach (var track in Tracks)
{
if (track.DownloadState == DownloadState.Downloaded)
{
DownloadedTracks++;
}
track.Index = i++;
}
Workspace.SaveWorkspaceConfig();
DisplayedTracksSource.AddRange(Tracks);
OnPageNumberChanged();
PageSelectorViewModel.UpdatePageview();
}
private void SearchTextChanged()
{
if (_searchTextChangeInProgress)
{
return;
}
_searchTextChangeInProgress = true;
var refreshPageView = false;
if (string.IsNullOrWhiteSpace(SearchText))
{
SearchTextboxWatermark = Resources.MainWindow_CurrentWorkspace_SearchWatermarkDefault;
if (DisplayedTracksSource.Count != Tracks.Count)
{
DisplayedTracksSource.Clear();
DisplayedTracksSource.AddRange(Tracks);
refreshPageView = true;
}
}
else
{
var results = Tracks.Where(x => x.Item.Title.ToLower().Contains(SearchText.ToLower())).ToList();
DisplayedTracksSource.Clear();
DisplayedTracksSource.AddRange(results);
SearchTextboxWatermark = string.Format(Resources.MainWindow_CurrentWorkspace_SearchWatermarkResults,
results.Count);
refreshPageView = true;
}
ApplyFilter();
if (refreshPageView)
{
OnPageNumberChanged();
}
PageSelectorViewModel.UpdatePageview();
_searchTextChangeInProgress = false;
}
