Add 'shortcuts' support

AndroidManifest.xml

@@ -38,8 +38,8 @@ THE SOFTWARE.
 		android:label="@string/app_name">
 
 		<meta-data
-		android:name="com.mirrorlink.android.rockscout.allow-offline-access"
-		android:value="true" />
+			android:name="com.mirrorlink.android.rockscout.allow-offline-access"
+			android:value="true" />
 
 		<activity
 			android:name="FullPlaybackActivity"
@@ -54,6 +54,11 @@ THE SOFTWARE.
 				<category android:name="android.intent.category.APP_MUSIC" />
 				<category android:name="android.intent.category.DEFAULT" />
 			</intent-filter>
+
+			<meta-data
+				android:name="android.app.shortcuts"
+				android:resource="@xml/shortcuts"/>
+
 		</activity>
 		<activity
 			android:name="PlaylistActivity"
@@ -158,6 +163,10 @@ THE SOFTWARE.
 			android:name="PermissionRequestActivity"
 			android:theme="@android:style/Theme.Translucent.NoTitleBar" />
 
+		<activity
+			android:name="ShortcutPseudoActivity"
+			android:theme="@android:style/Theme.Translucent.NoTitleBar" />
+
 		<activity android:name="AudioPickerActivity" android:theme="@style/PopupDialog"
 			android:excludeFromRecents="true" android:exported="true" >
 			<intent-filter>

src/ch/blinkenlights/android/vanilla/PlaybackService.java

@@ -161,6 +161,10 @@ public final class PlaybackService extends Service
 	 * when this is called.
 	 */
 	public static final String ACTION_PREVIOUS_SONG_AUTOPLAY = "ch.blinkenlights.android.vanilla.action.PREVIOUS_SONG_AUTOPLAY";
+	/**
+	 * Flushes the queue, switches to random mode and starts playing.
+	 */
+	public static final String ACTION_RANDOM_MIX_AUTOPLAY = "ch.blinkenlights.android.vanilla.action.RANDOM_MIX_AUTOPLAY";
 	/**
 	 * Change the shuffle mode.
 	 */
@@ -559,6 +563,14 @@ public final class PlaybackService extends Service
 				cycleFinishAction();
 			} else if (ACTION_CYCLE_SHUFFLE.equals(action)) {
 				cycleShuffle();
+			} else if (ACTION_RANDOM_MIX_AUTOPLAY.equals(action)) {
+				pause();
+				emptyQueue();
+				setFinishAction(SongTimeline.FINISH_RANDOM);
+				// We can't use play() here as setFinishAction() is handled in the background.
+				// We therefore send a GO message to the same queue, so it will get handled as
+				// soon as the queue is ready.
+				mHandler.sendEmptyMessage(MSG_CALL_GO);
 			} else if (ACTION_CLOSE_NOTIFICATION.equals(action)) {
 				mForceNotificationVisible = false;
 				pause();

src/ch/blinkenlights/android/vanilla/ShortcutPseudoActivity.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2017 Adrian Ulrich <adrian@blinkenlights.ch>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. 
+ */
+
+package ch.blinkenlights.android.vanilla;
+
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+
+
+public class ShortcutPseudoActivity extends Activity {
+
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+		final String action = getIntent().getAction();
+		switch (action) {
+			case PlaybackService.ACTION_TOGGLE_PLAYBACK:
+			case PlaybackService.ACTION_RANDOM_MIX_AUTOPLAY:
+				Intent intent = new Intent(this, PlaybackService.class);
+				intent.setAction(action);
+				startService(intent);
+				break;
+			default:
+				throw new IllegalArgumentException("No such action: " + action);
+		}
+
+		finish();
+	}
+}