Slice background worker with Wi-Fi Slice

Test: manual

Change-Id: Ic4fdc5713f511ff80f03728c99c68fda3d0cab02

src/com/android/settings/slices/SettingsSliceProvider.java

@@ -28,6 +28,7 @@ import android.os.StrictMode;
 import android.provider.Settings;
 import android.provider.SettingsSlicesContract;
 import android.text.TextUtils;
+import android.util.ArrayMap;
 import android.util.ArraySet;
 import android.util.KeyValueListParser;
 import android.util.Log;
@@ -131,6 +132,8 @@ public class SettingsSliceProvider extends SliceProvider {
 
     final Set<Uri> mRegisteredUris = new ArraySet<>();
 
+    final Map<Uri, SliceBackgroundWorker> mWorkerMap = new ArrayMap<>();
+
     public SettingsSliceProvider() {
         super(READ_SEARCH_INDEXABLES);
     }
@@ -165,6 +168,7 @@ public class SettingsSliceProvider extends SliceProvider {
             if (filter != null) {
                 registerIntentToUri(filter, sliceUri);
             }
+            startBackgroundWorker(sliceable);
             return;
         }
 
@@ -191,6 +195,7 @@ public class SettingsSliceProvider extends SliceProvider {
             SliceBroadcastRelay.unregisterReceivers(getContext(), sliceUri);
             mRegisteredUris.remove(sliceUri);
         }
+        stopBackgroundWorker(sliceUri);
         mSliceDataCache.remove(sliceUri);
     }
 
@@ -348,6 +353,31 @@ public class SettingsSliceProvider extends SliceProvider {
         }
     }
 
+    private void startBackgroundWorker(CustomSliceable sliceable) {
+        final SliceBackgroundWorker worker = sliceable.getBackgroundWorker();
+        if (worker == null) {
+            return;
+        }
+
+        final Uri uri = sliceable.getUri();
+        Log.d(TAG, "Starting background worker for: " + uri);
+        if (mWorkerMap.containsKey(uri)) {
+            return;
+        }
+
+        mWorkerMap.put(uri, worker);
+        worker.onSlicePinned();
+    }
+
+    private void stopBackgroundWorker(Uri uri) {
+        final SliceBackgroundWorker worker = mWorkerMap.get(uri);
+        if (worker != null) {
+            Log.d(TAG, "Stopping background worker for: " + uri);
+            worker.onSliceUnpinned();
+            mWorkerMap.remove(uri);
+        }
+    }
+
     private List<Uri> buildUrisFromKeys(List<String> keys, String authority) {
         final List<Uri> descendants = new ArrayList<>();