public static void Show()
{
var videoEditor = new VideoEditor();
var history = new History();
var setTextCommand = new SetTextCommand("Video Title", videoEditor, history);
setTextCommand.Execute();
Console.WriteLine($"Text: {videoEditor}");
var setContrast = new SetContrastCommand(1, videoEditor, history);
setContrast.Execute();
Console.WriteLine($"Contrast: {videoEditor}");
var undoCommand = new UndoCommand(history);
undoCommand.Execute();
Console.WriteLine($"Undo: {videoEditor}");
undoCommand.Execute();
Console.WriteLine($"Undo: {videoEditor}");
undoCommand.Execute();
Console.WriteLine($"Undo: {videoEditor}");
}
protected AbstractUndoableCommand(VideoEditor videoEditor, History history)
{
_videoEditor = videoEditor;
_history = history;
}
public SetContrastCommand(float contrast, VideoEditor videoEditor, History history)
: base(videoEditor, history)
{
_prevContrast = videoEditor.Contrast;
_contrast = contrast;
}
public SetTextCommand(string text, VideoEditor videoEditor, History history)
: base(videoEditor, history)
{
_text = text;
}
