Memento Pattern – Recording State

Here’s a little preview for the video I’m going to make tomorrow about the Memento Pattern.

To play with the .swf follows these steps:

1. Click the .swf to give it keyboard focus
2. Press the SPACE BAR to start your recording
3. Move the MOUSE around to change the red circle’s position
4. Press the SPACE BAR again to stop the recording
5. Press the LEFT and RIGHT keys to rewind and fast forward through actions you took

Neat trick, huh?

source

Tags: design patterns