author | Jaroslav Tulach <jtulach@netbeans.org> |
Thu, 27 Oct 2011 20:12:14 +0200 | |
changeset 384 | 8232b021005d |
parent 193 | 2b944e0980c9 |
child 392 | a3b259705f9f |
permissions | -rw-r--r-- |
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package org.apidesign.samples; |
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// BEGIN: xmms.java.api.ext |
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// BEGIN: xmms.java.api |
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public final class XMMS { |
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public void play() { doPlay(); } |
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public void pause() { doPause(); } |
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public void addToPlaylist(String file) { doAddToPlaylist(file); } |
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// FINISH: xmms.java.api |
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/** @since 2.0 we can also control volume */ |
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public void setVolume(int volume) { doTuneVolume(volume); } |
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// FINISH: xmms.java.api.ext |
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// BEGIN: xmms.java.spi.ext |
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// BEGIN: xmms.java.spi |
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interface Playback { |
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public void playback(byte[] data); |
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// FINISH: xmms.java.spi |
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/** @since 2.0 we can also control volume */ |
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interface Volume extends Playback { |
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public void setVolume(int volume); |
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} |
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} |
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// END: xmms.java.spi.ext |
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public void registerPlayback(Playback callback) { |
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this.callback = callback; |
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} |
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private Playback callback; |
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private void doAddToPlaylist(String file) { |
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} |
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private void doPause() { |
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} |
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private void doPlay() { |
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callback.playback("Play!".getBytes()); |
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} |
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// BEGIN: xmms.java.spi.instanceof |
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private void doTuneVolume(int volume) { |
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if (callback instanceof Playback.Volume) { |
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Playback.Volume pv = (Playback.Volume) callback; |
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pv.setVolume(volume); |
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} |
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} |
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// END: xmms.java.spi.instanceof |
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// |
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// Usage |
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// |
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public static void main(String[] args) { |
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XMMS xmms = new XMMS(); |
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// BEGIN: xmms.java.use |
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class MyCallbackPrints implements XMMS.Playback { |
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public void playback(byte[] data) { |
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System.out.println(new String(data)); |
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} |
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} |
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xmms.registerPlayback(new MyCallbackPrints()); |
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// END: xmms.java.use |
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} |
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} |