public static Task<IFile> RequestAsync(
this InteractionRequest<SaveFileInteraction> interactionRequest,
string title,
string acceptButtonText,
string cancelButtonText,
IEnumerable<FileType> fileTypeChoices )
{
Arg.NotNull( interactionRequest, nameof( interactionRequest ) );
Arg.NotNull( fileTypeChoices, nameof( fileTypeChoices ) );
if ( string.IsNullOrEmpty( title ) )
title = SR.SaveFileTitle;
if ( string.IsNullOrEmpty( acceptButtonText ) )
acceptButtonText = SR.Save;
if ( string.IsNullOrEmpty( cancelButtonText ) )
cancelButtonText = SR.Cancel;
var source = new TaskCompletionSource<IFile>();
SaveFileInteraction interaction = null;
interaction = new SaveFileInteraction()
{
Title = title,
DefaultCommandIndex = 0,
CancelCommandIndex = 1,
Commands =
{
new NamedCommand<object>( "Save", acceptButtonText, p => source.TrySetResult( interaction.SavedFile ) ),
new NamedCommand<object>( "Cancel", cancelButtonText, p => source.TrySetResult( null ) )
}
};
var defaultExt = ( from choice in fileTypeChoices
from ext in choice.Extensions
where !string.IsNullOrEmpty( ext )
select ext ).FirstOrDefault();
// set the default file extension to the first entry with a non-null, non-empty value
if ( !string.IsNullOrEmpty( defaultExt ) )
interaction.DefaultFileExtension = defaultExt;
interaction.FileTypeChoices.AddRange( fileTypeChoices );
interactionRequest.Request( interaction );
return source.Task;
}
public void FileNameShouldWriteExpectedValue()
{
// arrange
var expected = "test";
var interaction = new SaveFileInteraction();
// act
Assert.PropertyChanged( interaction, "FileName", () => interaction.FileName = expected );
var actual = interaction.FileName;
// assert
Assert.Equal( expected, actual );
}
public void DefaultFileExtensionShouldWriteExpectedValue()
{
// arrange
var expected = "*.txt";
var interaction = new SaveFileInteraction();
// act
Assert.PropertyChanged( interaction, "DefaultFileExtension", () => interaction.DefaultFileExtension = expected );
var actual = interaction.DefaultFileExtension;
// assert
Assert.Equal( expected, actual );
}
public void FileNameShouldNotAllowNull()
{
// arrange
string value = null;
var interaction = new SaveFileInteraction();
// act
var ex = Assert.Throws<ArgumentNullException>( () => interaction.FileName = value );
// assert
Assert.Equal( "value", ex.ParamName );
}
public void ConstructorShouldSetSuggestedFileName()
{
// arrange
var expected = "test";
// act
var interaction = new SaveFileInteraction( "", "", expected );
var actual = interaction.FileName;
// assert
Assert.Equal( expected, actual );
}
