/// <summary>
/// Displays a file-editing tab.
/// </summary>
/// <typeparam name="T">The tab type to display.</typeparam>
/// <param name="type">The type of file the tab edits (e.g. Textures, Sounds, ...).</param>
/// <param name="extension">The file extension of the file type with a dot, but without a asterisk (e.g. .xml, .png, ...).</param>
/// <param name="getInstance">A callback for creating an instance of the tab.</param>
protected void OpenFileTab <T>(string type, string extension, Func <string, bool, T> getInstance) where T : Tab
{
#region Sanity checks
if (string.IsNullOrEmpty(type))
{
throw new ArgumentNullException(nameof(type));
}
if (string.IsNullOrEmpty(extension))
{
throw new ArgumentNullException(nameof(extension));
}
if (getInstance == null)
{
throw new ArgumentNullException(nameof(getInstance));
}
#endregion
// Get the file path
string path;
bool overwrite;
if (!FileSelectorDialog.TryGetPath(type, extension, out path, out overwrite))
{
return;
}
// ReSharper disable PossibleMultipleEnumeration
var previousInstances = Tabs.Keys.OfType <T>().Where(x => x.FilePath == path);
if (previousInstances.Any())
{
ShowTab(previousInstances.First());
}
else
{
AddTab(getInstance(path, overwrite));
}
// ReSharper restore PossibleMultipleEnumeration
}
/// <summary>
/// Gets the file path for a game-content file
/// </summary>
/// <param name="type">The type of file you want (e.g. Textures, Sounds, ...)</param>
/// <param name="extension">The file extension of the file type with a dot, but without a asterisk (e.g. .xml, .png, ...)</param>
/// <param name="path">The absolute path to the requested content file</param>
/// <param name="overwrite">Returns whether the user wants an existing file to be overwritten</param>
/// <param name="allowNew">Allow the user to create a new file instead of opening an existing one?</param>
/// <returns><c>true</c> if a file was selected, <c>false</c> if none was selected</returns>
/// <exception cref="InvalidOperationException">The user didn't select a file.</exception>
private static bool TryGetPath(string type, string extension, out string path, out bool overwrite, bool allowNew)
{
var selector = new FileSelectorDialog {
_type = type, _extension = extension, buttonNew = { Enabled = allowNew }
};
// Display a nice text for the filetype
string filetype = Path.GetFileName(type);
if (filetype == "Meshes")
{
filetype = "Mesh"; // Handle unusual plural form of Mesh
}
else if (filetype.EndsWith("s", StringComparison.Ordinal))
{
filetype = filetype.Remove(filetype.Length - 1, 1); // Remove plural "s"
}
selector.selectLabel.Text = string.Format(Resources.Select, filetype);
// Create containing directory
string directory;
try
{
directory = ContentManager.CreateDirPath(type);
}
#region Error handling
catch (IOException ex)
{
Msg.Inform(selector, Resources.InvalidDirectoryPath + "\n" + ex.Message, MsgSeverity.Warn);
path = null;
overwrite = false;
return(false);
}
catch (UnauthorizedAccessException ex)
{
Msg.Inform(selector, Resources.InvalidDirectoryPath + "\n" + ex.Message, MsgSeverity.Warn);
path = null;
overwrite = false;
return(false);
}
#endregion
// Setup file dialogs
selector.openFileDialog.InitialDirectory = selector.saveFileDialog.InitialDirectory = directory;
selector.openFileDialog.Filter = selector.saveFileDialog.Filter = string.Format("{0} (*{1})|*{1}", type, extension);
// Display form
selector.UpdateFileList();
selector.ShowDialog();
if (string.IsNullOrEmpty(selector._path))
{ // User canceled
path = null;
overwrite = false;
return(false);
}
// User has selected
path = selector._path;
overwrite = selector._overwrite;
return(true);
}