public TimelineViewModel(AudioCanvasViewModel audioCanvasViewModel,
DescriptionCanvasViewModel descriptionCanvasViewModel,
MediaViewModel mediaViewModel,
NumberLineViewModel numberLineViewModel,
ProjectManager projectManager)
{
_audioCanvasViewModel = audioCanvasViewModel;
_descriptionCanvasViewModel = descriptionCanvasViewModel;
_mediaViewModel = mediaViewModel;
_numberLineViewModel = numberLineViewModel;
_projectManager = projectManager;
InitCommands();
}
public MainWindow()
{
var splashscreen = new SplashScreen("../Resources/Images/LiveDescribe-Splashscreen.png");
splashscreen.Show(true);
CustomResources.LoadResources();
if (!Defines.Debug)
System.Threading.Thread.Sleep(2000);
Settings.Default.Upgrade();
Settings.Default.InitializeDefaultValuesIfNull();
InitializeComponent();
//check which exporting options are available, depending on build
if (Defines.Zagga)
{
ExportWithVideo.Visibility = Visibility.Visible;
ExportAudioOnly.Visibility = Visibility.Collapsed;
}
else
{
ExportWithVideo.Visibility = Visibility.Collapsed;
ExportAudioOnly.Visibility = Visibility.Visible;
}
_videoMedia = MediaControl.VideoMedia;
var mainWindowViewModel = new MainViewModel(_videoMedia);
DataContext = mainWindowViewModel;
_mainViewModel = mainWindowViewModel;
_mediaViewModel = mainWindowViewModel.MediaViewModel;
_projectManager = mainWindowViewModel.ProjectManager;
_intervalInfoListViewModel = mainWindowViewModel.IntervalInfoListViewModel;
SetRecentDocumentsList();
#region Event Listeners for VideoMedia
//if the videomedia's path changes (a video is added)
//then play and stop the video to load the video so the VideoOpenedRequest event gets fired
//this is done because the MediaElement does not load the video until it is played
//therefore you can't know the duration of the video or if it hasn't been loaded properly unless it fails
//I know this is a little hackish, but it's a consequence of how the MediaElement works
_videoMedia.PathChangedEvent += (sender, e) =>
{
_videoMedia.Play();
_videoMedia.Pause();
};
#endregion
#region Event Listeners For MainViewModel (Pause, Play, Mute)
//These events are put inside the main control because they will also effect the list
//of audio descriptions an instance of DescriptionCollectionViewModel is inside the main control
//and the main control will take care of synchronizing the video, and the descriptions
//listens for PlayRequested Event
mainWindowViewModel.PlayRequested += (sender, e) => CommandManager.InvalidateRequerySuggested();
//listens for PauseRequested Event
mainWindowViewModel.PauseRequested += (sender, e) => CommandManager.InvalidateRequerySuggested();
//listens for when the media has gone all the way to the end
mainWindowViewModel.MediaEnded += (sender, e) =>
{
TimelineControl.ResetMarkerPosition();
//this is to recheck all the graphics states
CommandManager.InvalidateRequerySuggested();
};
mainWindowViewModel.GraphicsTick += Play_Tick;
mainWindowViewModel.PlayingDescription += (sender, args) =>
{
try
{
if (args.Value.IsExtendedDescription)
DispatcherHelper.UIDispatcher.Invoke(() =>
SpaceAndDescriptionsTabControl.ExtendedDescriptionsListView.ScrollToCenterOfView(args.Value));
else
DispatcherHelper.UIDispatcher.Invoke(() =>
SpaceAndDescriptionsTabControl.DescriptionsListView.ScrollToCenterOfView(args.Value));
}
catch (Exception exception)
{
Log.Warn("Task Cancelled exception", exception);
}
};
#endregion
#region Event Listeners For MediaViewModel
mainWindowViewModel.MediaViewModel.VideoOpenedRequested += (sender, e) =>
{
//Video gets played and paused so you can seek initially when the video gets loaded
_videoMedia.Play();
_videoMedia.Pause();
};
#endregion
#region DescriptionCanvas Events
//If one canvas is clicked, we want to unselect the other canvas' selection
TimelineControl.DescriptionCanvas.MouseLeftButtonDown += (sender, args) =>
{
if (TimelineControl.AudioCanvas.MouseAction == IntervalMouseAction.ItemSelected)
TimelineControl.AudioCanvas.ClearMouseSelection();
};
TimelineControl.DescriptionCanvas.MouseLeftButtonUp += (sender, args) =>
{
if (TimelineControl.DescriptionCanvas.MouseAction == IntervalMouseAction.None)
_intervalInfoListViewModel.ClearSelection();
};
#endregion
#region AudioCanvas Events
TimelineControl.AudioCanvas.MouseLeftButtonDown += (sender, args) =>
{
if (TimelineControl.DescriptionCanvas.MouseAction == IntervalMouseAction.ItemSelected)
TimelineControl.DescriptionCanvas.ClearMouseSelection();
};
TimelineControl.AudioCanvas.MouseLeftButtonUp += (sender, args) =>
{
if (TimelineControl.AudioCanvas.MouseAction == IntervalMouseAction.None)
_intervalInfoListViewModel.ClearSelection();
};
#endregion
#region Event Handlers for ProjectManager
//When a description is added, attach an event to the StartInVideo and EndInVideo properties
//so when those properties change it redraws them
_projectManager.AllDescriptions.CollectionChanged += (sender, e) =>
{
if (e.Action != NotifyCollectionChangedAction.Add)
return;
foreach (Description d in e.NewItems)
AddDescriptionEventHandlers(d);
};
_projectManager.Spaces.CollectionChanged += (sender, e) =>
{
if (e.Action == NotifyCollectionChangedAction.Add)
{
foreach (Space space in e.NewItems)
AddSpaceEventHandlers(space);
}
};
#endregion
#region Event Handlers for Settings
Settings.Default.RecentProjects.CollectionChanged += (sender, args) => SetRecentDocumentsList();
#endregion
}
public MainViewModel(ILiveDescribePlayer mediaVideo)
{
DispatcherHelper.Initialize();
_undoRedoManager = new UndoRedoManager();
_loadingViewModel = new LoadingViewModel(100, null, 0, false);
_projectManager = new ProjectManager(_loadingViewModel, _undoRedoManager);
_descriptionRecordingViewModel = new DescriptionRecordingViewModel(mediaVideo,
_projectManager);
_mediaViewModel = new MediaViewModel(mediaVideo, _projectManager);
_preferences = new PreferencesViewModel();
_intervalInfoListViewModel = new IntervalInfoListViewModel(_projectManager, _descriptionRecordingViewModel);
_markingSpacesViewModel = new MarkingSpacesViewModel(_intervalInfoListViewModel, mediaVideo, _undoRedoManager);
_audioCanvasViewModel = new AudioCanvasViewModel(mediaVideo, _projectManager, _undoRedoManager);
_descriptionCanvasViewModel = new DescriptionCanvasViewModel(mediaVideo, _projectManager, _undoRedoManager);
_numberLineViewModel = new NumberLineViewModel(mediaVideo);
_timelineViewModel = new TimelineViewModel(_audioCanvasViewModel, _descriptionCanvasViewModel, _mediaViewModel,
_numberLineViewModel, _projectManager);
_mediaVideo = mediaVideo;
DescriptionPlayer = new DescriptionPlayer();
DescriptionPlayer.DescriptionFinishedPlaying += (sender, e) =>
{
try
{
DispatcherHelper.UIDispatcher.Invoke(() =>
_mediaViewModel.ResumeFromDescription(e.Value));
}
catch (TaskCanceledException exception)
{
Log.Warn("Task Canceled Exception", exception);
}
};
#region Commands
//Commands
CloseProject = new RelayCommand(
canExecute: () => _projectManager.HasProjectLoaded,
execute: () =>
{
if (_projectManager.IsProjectModified)
{
var result = MessageBoxFactory.ShowWarningQuestion(
string.Format(UiStrings.MessageBox_Format_SaveProjectWarning, _project.ProjectName));
if (result == MessageBoxResult.Yes)
SaveProject.Execute();
else if (result == MessageBoxResult.Cancel)
return;
}
_projectManager.CloseProject();
});
NewProject = new RelayCommand(() =>
{
var viewModel = DialogShower.SpawnNewProjectView();
if (viewModel.DialogResult != true)
return;
if (viewModel.CopyVideo)
CopyVideoAndSetProject(viewModel.VideoPath, viewModel.Project);
else
SetProject(viewModel.Project);
});
OpenProject = new RelayCommand(() =>
{
var projectChooser = new OpenFileDialog
{
Filter = string.Format(UiStrings.OpenFileDialog_Format_OpenProject, Project.Names.ProjectExtension)
};
bool? dialogSuccess = projectChooser.ShowDialog();
if (dialogSuccess != true)
return;
OpenProjectPath.Execute(projectChooser.FileName);
});
OpenProjectPath = new RelayCommand<string>(path =>
{
//Attempt to read project. If object fields are missing, an error window pops up.
try
{
Project p = FileReader.ReadProjectFile(path);
SetProject(p);
}
catch (JsonSerializationException)
{
MessageBoxFactory.ShowError(UiStrings.MessageBox_OpenProjectFileMissingError);
}
catch (DirectoryNotFoundException e)
{
Log.Warn("Directory not found while trying to open project", e);
MessageBoxFactory.ShowError(UiStrings.MessageBox_DirectoryNotFoundError);
}
catch (FileNotFoundException e)
{
Log.Warn("FileNotFound while trying to open project", e);
MessageBoxFactory.ShowError(string.Format(UiStrings.MessageBox_Format_FileNotFoundError,
e.FileName));
}
});
ClearRecentProjects = new RelayCommand(() =>
{
Settings.Default.RecentProjects.Clear();
Settings.Default.Save();
});
ShowImportAudioDescription = new RelayCommand(
canExecute: () => _projectManager.HasProjectLoaded,
execute: () =>
{
var viewModel = DialogShower.SpawnImportAudioDescriptionView(_projectManager, _mediaVideo.DurationMilliseconds);
}
);
SaveProject = new RelayCommand(
canExecute: () => _projectManager.IsProjectModified,
execute: () => _projectManager.SaveProject()
);
ExportWithDescriptions = new RelayCommand(
canExecute: () => _projectManager.HasProjectLoaded,
execute: () =>
{
var viewModel = DialogShower.SpawnExportWindowView(_project, _mediaVideo.Path,
_mediaVideo.DurationSeconds, _projectManager.AllDescriptions.ToList(),
_loadingViewModel);
if (viewModel.DialogResult != true)
return;
});
ClearCache = new RelayCommand(
canExecute: () => _projectManager.HasProjectLoaded,
execute: () =>
{
var p = _project;
CloseProject.Execute();
Directory.Delete(p.Folders.Cache, true);
SetProject(p);
});
ShowPreferences = new RelayCommand(() =>
{
_preferences.RetrieveApplicationSettings();
var preferencesWindow = new PreferencesWindow(_preferences);
preferencesWindow.ShowDialog();
});
FindSpaces = new RelayCommand(
canExecute: () => _projectManager.HasProjectLoaded,
execute: () =>
{
var spaces = AudioAnalyzer.FindSpaces(_mediaViewModel.Waveform);
_projectManager.Spaces.AddRange(spaces);
}
);
ExportDescriptionsTextToSrt = new RelayCommand(
canExecute: () => _projectManager.HasProjectLoaded,
execute: () =>
{
var saveFileDialog = new SaveFileDialog
{
FileName = Path.GetFileNameWithoutExtension(_mediaViewModel.Path),
Filter = UiStrings.SaveFileDialog_ExportToSrt
};
saveFileDialog.ShowDialog();
FileWriter.WriteDescriptionsTextToSrtFile(saveFileDialog.FileName,
_projectManager.AllDescriptions);
}
);
ExportSpacesTextToSrt = new RelayCommand(
canExecute: () => _projectManager.HasProjectLoaded,
execute: () =>
{
var saveFileDialog = new SaveFileDialog
{
FileName = Path.GetFileNameWithoutExtension(_mediaViewModel.Path),
Filter = UiStrings.SaveFileDialog_ExportToSrt
};
saveFileDialog.ShowDialog();
FileWriter.WriteSpacesTextToSrtFile(saveFileDialog.FileName, _projectManager.Spaces);
}
);
ShowDescriptionFolder = new RelayCommand(
canExecute: () => _projectManager.HasProjectLoaded,
execute: () =>
{
var pfi = new ProcessStartInfo("Explorer.exe", _project.Folders.Descriptions.AbsolutePath);
Process.Start(pfi);
}
);
ShowAboutInfo = new RelayCommand(DialogShower.SpawnAboutInfoView);
#endregion
//If apply requested happens in the preferences use the new saved microphone in the settings
_descriptiontimer = new Timer(10);
_descriptiontimer.Elapsed += Play_Tick;
_descriptiontimer.AutoReset = true;
#region MediaViewModel Events
_mediaViewModel.PlayRequested += (sender, e) =>
{
_mediaVideo.Play();
_descriptiontimer.Start();
//this Handler should be attached to the view to update the graphics
OnPlayRequested(sender, e);
};
_mediaViewModel.PauseRequested += (sender, e) =>
{
_mediaVideo.Pause();
_descriptiontimer.Stop();
if (_lastRegularDescriptionPlayed != null && _lastRegularDescriptionPlayed.IsPlaying)
DescriptionPlayer.Stop();
//this Handler should be attached to the view to update the graphics
OnPauseRequested(sender, e);
};
_mediaViewModel.OnPausedForExtendedDescription += (sender, e) =>
{
_mediaVideo.Pause();
_descriptiontimer.Stop();
CommandManager.InvalidateRequerySuggested();
};
_mediaViewModel.MuteRequested += OnMuteRequested;
_mediaViewModel.MediaEndedEvent += (sender, e) =>
{
_descriptiontimer.Stop();
_mediaVideo.Stop();
OnMediaEnded(sender, e);
};
#endregion
#region Property Changed Events
_mediaViewModel.PropertyChanged += PropertyChangedHandler;
//Update window title based on project name
PropertyChanged += (sender, args) =>
{
if (args.PropertyName == "IsProjectModified")
SetWindowTitle();
};
#endregion
#region ProjectManager Events
_projectManager.ProjectLoaded += (sender, args) =>
{
_project = args.Value;
_mediaViewModel.LoadVideo(_project.Files.Video);
SetWindowTitle();
};
_projectManager.ProjectModifiedStateChanged += (sender, args) => SetWindowTitle();
_projectManager.ProjectClosed += (sender, args) =>
{
TryToCleanUpUnusedDescriptionAudioFiles();
_project = null;
SetWindowTitle();
};
#endregion
SetWindowTitle();
}
