source: josm/trunk/src/org/openstreetmap/josm/actions/audio/AudioBackAction.java@ 572

// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.actions.audio;

import static org.openstreetmap.josm.tools.I18n.tr;

import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.actions.JosmAction;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;
import org.openstreetmap.josm.gui.layer.markerlayer.MarkerLayer;
import org.openstreetmap.josm.tools.AudioPlayer;

public class AudioBackAction extends JosmAction {

        private double amount; // note, normally negative, i.e. jump backwards in time
        
        public AudioBackAction() {
                super(tr("Back"), "audio-back", tr("Jump back."), KeyEvent.VK_F6, 0, true);
                try {
                        amount = - Double.parseDouble(Main.pref.get("audio.forwardbackamount","10.0"));
                } catch (NumberFormatException e) {
                        amount = 10.0;
                }
                this.putValue("help", "Action/Back");
        }

        public void actionPerformed(ActionEvent e) {
                try {
                        if (AudioPlayer.playing() || AudioPlayer.paused())
                                AudioPlayer.play(AudioPlayer.url(), AudioPlayer.position() + amount);
                        else
                                MarkerLayer.playAudio();
                } catch (Exception ex) {
                        AudioPlayer.audioMalfunction(ex);
                }
        }
}