/// <summary>
/// Creates new empty LibraryViewModel using given ManagerViewModel, Notifier, and imageGrid element
/// </summary>
/// <param name="manager">ManagerViewModel to be linked to this library</param>
/// <param name="notifier">Notifier used to send toast notifs (from main VM)</param>
/// <param name="imageGrid">ListView element used to display image grid on front-end</param>
public LibraryViewModel(ManagerViewModel manager, Notifier notifier, ListView imageGrid)
{
// Create new empty library list
LibraryList = new ObservableCollection <WBImage>();
// This library will be empty (it's new)
IsEmpty = true;
// Link the manager and set the notifier and ImageGrid
Manager = manager;
_notifier = notifier;
ImageGrid = imageGrid;
// Create SortTypes and SortDirections
SortTypes = new List <string>()
{
"Brightness",
"Date Added",
"Enabled"
};
SortDirections = new List <string>()
{
"Descending",
"Ascending"
};
// Create commands
CreateCommands();
}
/// <summary>
/// Creates new MainViewModel; attempts to pull Library and Manager from file and creates default
/// ones if either fails
/// </summary>
/// <param name="mainWindow">Main display window</param>
/// <param name="startingMinimized">True when starting minimized (ie from Windows startup), false
/// otherwise; will only show window after startup if this is set true</param>
/// <param name="imageGrid">Front-end ListView element used for displaying images on main window</param>
public MainViewModel(MainWindow mainWindow, bool startingMinimized, ListView imageGrid)
{
// Create notifier for sending toast notifs
CreateNotifier();
// Only show window if not starting minimized
if (!startingMinimized)
{
mainWindow.Show();
}
// Try to pull library from last lib file
LibraryViewModel libraryFromFile = GetLibraryFromLastLibFile(startingMinimized);
// If successful, use the library from file
if (libraryFromFile != null)
{
Library = libraryFromFile;
Library.ImageGrid = imageGrid;
}
// Otherwise create new empty library
else
{
Library = new LibraryViewModel(Manager, _notifier, imageGrid);
}
// Try to pull new manager from settings file
ManagerViewModel managerFromFile = GetManagerFromSettingsFile(startingMinimized);
// If successful, use the manager from file
if (managerFromFile != null)
{
Manager = managerFromFile;
}
// If unsuccessful (e.g. no settings file exists), just create new manager with default settings
else
{
Manager = new ManagerViewModel(Library);
}
// Link library and manager after creation
Library.Manager = Manager;
Manager.Library = Library;
// Check and update before displaying
Manager.CheckAndUpdate();
// Store window and image grid element
_window = mainWindow;
_imageGrid = imageGrid;
CreateCommands();
}
/// <summary>
/// Attempts to pull manager settings from AppData file and returns ManagerViewModel with those
/// settings if successful
/// </summary>
/// <param name="startingMinimized">True if starting app minimized, false otherwise; if true, will
/// display success/failure toast notifs on loading settings file</param>
/// <returns>ManagerViewModel with settings from AppData file if successful; null if unsuccessful</returns>
public ManagerViewModel GetManagerFromSettingsFile(bool startingMinimized)
{
// Pull AppData directory (will differ depending on user + drive)
string wallBriteAppDataDirectory = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "\\WallBrite";
// Check if there is settings file in the AppData directory; if not then skip loading settings file
if (File.Exists(wallBriteAppDataDirectory + "\\Settings.json"))
{
// If file exists, try to open it
try
{
ManagerViewModel newManager;
// Open the file and create newManager using setings from it
using (FileStream fileStream = File.OpenRead(wallBriteAppDataDirectory + "\\Settings.json"))
newManager = new ManagerViewModel(Library, GetManagerSettingsFromStream(fileStream));
// Show success toast notif if not starting minimized
if (!startingMinimized)
{
_notifier.ShowInformation("Successfully loaded last used WallBrite settings");
}
return(newManager);
}
// If file fails to open, send failure toast notif and return null
catch (IOException)
{
// Show failure toast notif not starting minimized
if (!startingMinimized)
{
_notifier.ShowError("Failed to load last used WallBrite settings: file corrupted or in use by another program");
}
return(null);
}
}
// If file doesn't exist, return null
return(null);
}
/// <summary>
/// Creates new LibraryViewModel using given libraryList, ManagerViewModel, Notifier, and imageGrid element
/// </summary>
/// <param name="libraryList">Array of WBImages to be represented by this library</param>
/// <param name="manager">ManagerViewModel to be linked to this library</param>
/// <param name="notifier">otifier used to send toast notifs (from main VM)</param>
/// /// <param name="imageGrid">ListView element used to display image grid on front-end</param>
public LibraryViewModel(WBImage[] libraryList, ManagerViewModel manager, Notifier notifier, ListView imageGrid)
{
// Create library list from given array
LibraryList = new ObservableCollection <WBImage>(libraryList);
// Set empty fla true if this library is empty; otherwise false
if (LibraryList.Count < 1)
{
IsEmpty = true;
}
else
{
IsEmpty = false;
}
// Link the manager and set the notifier and ImageGrid
Manager = manager;
_notifier = notifier;
ImageGrid = imageGrid;
// Create SortTypes and SortDirections
SortTypes = new List <string>()
{
"Brightness",
"Date Added",
"Enabled"
};
SortDirections = new List <string>()
{
"Descending",
"Ascending"
};
// Set default sort type and direction
SortType = "Date Added";
SortDirection = "Ascending";
// Create commands
CreateCommands();
}