Merge remote-tracking branch 'github/pr/1492/previous_app_management'

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleActiveAppTracker.java

@@ -0,0 +1,40 @@
+package nodomain.freeyourgadget.gadgetbridge.service.devices.pebble;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import java.util.UUID;
+
+public class PebbleActiveAppTracker {
+    private @Nullable UUID mPreviousRunningApp = null;
+    private @Nullable UUID mCurrentRunningApp = null;
+
+    @Nullable
+    public UUID getPreviousRunningApp() {
+        return mPreviousRunningApp;
+    }
+
+    @Nullable
+    public UUID getCurrentRunningApp() {
+        return mCurrentRunningApp;
+    }
+
+    public void markAppClosed(@NonNull UUID app) {
+        if (mCurrentRunningApp == app) {
+            if (mPreviousRunningApp != null) {
+                markAppOpened(mPreviousRunningApp);
+            } else {
+                mCurrentRunningApp = null;
+            }
+        }
+    }
+
+    public void markAppOpened(@NonNull UUID openedApp) {
+        if (openedApp.equals(mCurrentRunningApp)) {
+            return;
+        }
+
+        mPreviousRunningApp = mCurrentRunningApp;
+        mCurrentRunningApp = openedApp;
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleIoThread.java

@@ -27,6 +27,7 @@ import android.os.ParcelUuid;
 import android.webkit.ValueCallback;
 import android.webkit.WebView;
 
+import androidx.annotation.NonNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -75,6 +76,7 @@ class PebbleIoThread extends GBDeviceIoThread {
     private final PebbleProtocol mPebbleProtocol;
     private final PebbleSupport mPebbleSupport;
     private PebbleKitSupport mPebbleKitSupport;
+    private final PebbleActiveAppTracker mPebbleActiveAppTracker;
     private final boolean mEnablePebblekit;
 
     private boolean mIsTCP = false;
@@ -149,6 +151,8 @@ class PebbleIoThread extends GBDeviceIoThread {
         mEnablePebblekit = prefs.getBoolean("pebble_enable_pebblekit", false);
         mPebbleProtocol.setAlwaysACKPebbleKit(prefs.getBoolean("pebble_always_ack_pebblekit", false));
         mPebbleProtocol.setEnablePebbleKit(mEnablePebblekit);
+
+        mPebbleActiveAppTracker = new PebbleActiveAppTracker();
     }
 
     private int readWithException(InputStream inputStream, byte[] buffer, int byteOffset, int byteCount) throws IOException {
@@ -563,6 +567,11 @@ class PebbleIoThread extends GBDeviceIoThread {
                             WebViewSingleton.getInstance().runJavascriptInterface(gbDevice, appMgmt.uuid);
                         }
                     }
+
+                    mPebbleActiveAppTracker.markAppOpened(appMgmt.uuid);
+                    break;
+                case STOP:
+                    mPebbleActiveAppTracker.markAppClosed(appMgmt.uuid);
                     break;
                 default:
                     break;
@@ -681,6 +690,17 @@ class PebbleIoThread extends GBDeviceIoThread {
         }
     }
 
+    void reopenLastApp(@NonNull UUID assumedCurrentApp) {
+        UUID currentApp = mPebbleActiveAppTracker.getCurrentRunningApp();
+        UUID previousApp = mPebbleActiveAppTracker.getPreviousRunningApp();
+
+        if (previousApp == null || !assumedCurrentApp.equals(currentApp)) {
+            write(mPebbleProtocol.encodeAppStart(assumedCurrentApp, false));
+        } else {
+            write(mPebbleProtocol.encodeAppStart(previousApp, true));
+        }
+    }
+
     private void finishInstall(boolean hadError) {
         if (!mIsInstalling) {
             return;

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleKitSupport.java

@@ -44,6 +44,8 @@ class PebbleKitSupport {
     private static final String PEBBLEKIT_ACTION_APP_START = "com.getpebble.action.app.START";
     private static final String PEBBLEKIT_ACTION_APP_STOP = "com.getpebble.action.app.STOP";
 
+    private static final String PEBBLEKIT_EXTRA_REOPEN_LAST_APP = "com.getpebble.action.app.REOPEN_LAST_APP";
+
     private static final String PEBBLEKIT_ACTION_DL_RECEIVE_DATA_NEW = "com.getpebble.action.dl.RECEIVE_DATA_NEW";
     //private static final String PEBBLEKIT_ACTION_DL_RECEIVE_DATA = "com.getpebble.action.dl.RECEIVE_DATA";
     private static final String PEBBLEKIT_ACTION_DL_ACK_DATA = "com.getpebble.action.dl.ACK_DATA";
@@ -73,8 +75,13 @@ class PebbleKitSupport {
                 case PEBBLEKIT_ACTION_APP_STOP:
                     uuid = (UUID) intent.getSerializableExtra("uuid");
                     if (uuid != null) {
+                        if (action.equals(PEBBLEKIT_ACTION_APP_STOP) &&
+                                intent.getBooleanExtra(PEBBLEKIT_EXTRA_REOPEN_LAST_APP, false)) {
+                            mPebbleIoThread.reopenLastApp(uuid);
+                        } else {
                             mPebbleIoThread.write(mPebbleProtocol.encodeAppStart(uuid, action.equals(PEBBLEKIT_ACTION_APP_START)));
                         }
+                    }
                     break;
                 case PEBBLEKIT_ACTION_APP_SEND:
                     int transaction_id = intent.getIntExtra("transaction_id", -1);

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java

@@ -2156,7 +2156,12 @@ public class PebbleProtocol extends GBDeviceProtocol {
                 break;
             case APPRUNSTATE_STOP:
                 LOG.info(ENDPOINT_NAME + ": stopped " + uuid);
-                break;
+
+                GBDeviceEventAppManagement gbDeviceEventAppManagement = new GBDeviceEventAppManagement();
+                gbDeviceEventAppManagement.uuid = uuid;
+                gbDeviceEventAppManagement.type = GBDeviceEventAppManagement.EventType.STOP;
+                gbDeviceEventAppManagement.event = GBDeviceEventAppManagement.Event.SUCCESS;
+                return new GBDeviceEvent[]{gbDeviceEventAppManagement};
             default:
                 LOG.info(ENDPOINT_NAME + ": (cmd:" + command + ")" + uuid);
                 break;