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KeycodeListener

A simple listener for a sequence of key presses.

A simple listener for keyboard events. It takes a array of key codes as input, and fires an callback when the sequence is typed in the correct order.

Sample code

import com.google.gwt.event.dom.client.KeyCodes;

        // listens to the Konami code (? ? ? ? ? ? ? ? B A)
        final KeycodeListener kl = new KeycodeListener();
       
        kl.setKeycode(new int[] { KeyCodes.KEY_UP, KeyCodes.KEY_UP,
                KeyCodes.KEY_DOWN, KeyCodes.KEY_DOWN, KeyCodes.KEY_LEFT,
                KeyCodes.KEY_RIGHT, KeyCodes.KEY_LEFT, KeyCodes.KEY_RIGHT, 66,
                65 });

        kl.setCallback(new KeycodeListener.CodeCallback() {

            @Override
            public void codeFired() {
                kl.getWindow().showNotification("Great success!");
            }
        });

Links

• Source code
• Demo
• Discussion Forum

Compatibility