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66 lines
1.2 KiB
66 lines
1.2 KiB
package mightypork.rogue.input;
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import mightypork.rogue.bus.events.KeyboardEvent;
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/**
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* Key binding, trigger activated by a keystroke event
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*
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* @author MightyPork
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*/
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public class KeyBinding implements KeyboardEvent.Listener {
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private final KeyStroke keystroke;
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private Runnable handler;
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private boolean wasActive = false;
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/**
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* @param stroke trigger keystroke
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* @param handler action
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*/
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public KeyBinding(KeyStroke stroke, Runnable handler) {
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this.keystroke = stroke;
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this.handler = handler;
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wasActive = keystroke.isActive();
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}
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/**
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* Check for equality of keystroke
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*
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* @param stroke other keystroke
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* @return true if keystrokes are equal (cannot co-exist)
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*/
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public boolean matches(KeyStroke stroke)
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{
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return this.keystroke.equals(stroke);
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}
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/**
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* @param handler event handler
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*/
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public void setHandler(Runnable handler)
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{
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this.handler = handler;
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}
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@Override
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public void receive(KeyboardEvent event)
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{
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// ignore unrelated events
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if (!keystroke.getKeys().contains(event.getKey())) return;
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// run handler when event was met
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if (keystroke.isActive() && !wasActive) {
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handler.run();
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}
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wasActive = keystroke.isActive();
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}
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}
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