Refactor ui callbacks for DownloadIndexesThread

OsmAnd/src/net/osmand/plus/activities/MapActivity.java

@@ -93,10 +93,8 @@ import net.osmand.plus.helpers.ImportHelper;
 import net.osmand.plus.helpers.ImportHelper.ImportGpxBottomSheetDialogFragment;
 import net.osmand.plus.helpers.WakeLockHelper;
 import net.osmand.plus.inapp.InAppPurchaseHelper;
-import net.osmand.plus.inapp.InAppPurchaseHelper.InAppPurchaseTaskType;
 import net.osmand.plus.mapcontextmenu.AdditionalActionsBottomSheetDialogFragment;
 import net.osmand.plus.mapcontextmenu.MapContextMenu;
-import net.osmand.plus.mapcontextmenu.MapContextMenuFragment;
 import net.osmand.plus.mapcontextmenu.builders.cards.dialogs.ContextMenuCardDialogFragment;
 import net.osmand.plus.mapcontextmenu.other.DestinationReachedMenu;
 import net.osmand.plus.mapcontextmenu.other.MapRouteInfoMenu;
@@ -1613,13 +1611,10 @@ public class MapActivity extends OsmandActionBarActivity implements DownloadEven
 	// DownloadEvents
 	@Override
 	public void newDownloadIndexes() {
-		FirstUsageWizardFragment wizardFragment = getFirstUsageWizardFragment();
+		for (Fragment fragment : getSupportFragmentManager().getFragments()) {
-		if (wizardFragment != null) {
+			if (fragment instanceof DownloadEvents) {
-			wizardFragment.newDownloadIndexes();
+				((DownloadEvents) fragment).newDownloadIndexes();
 			}
-		WeakReference<MapContextMenuFragment> fragmentRef = getContextMenu().findMenuFragment();
-		if (fragmentRef != null) {
-			fragmentRef.get().newDownloadIndexes();
 		}
 		if (dashboardOnMap.isVisible()) {
 			dashboardOnMap.onNewDownloadIndexes();
@@ -1629,13 +1624,10 @@ public class MapActivity extends OsmandActionBarActivity implements DownloadEven
 
 	@Override
 	public void downloadInProgress() {
-		FirstUsageWizardFragment wizardFragment = getFirstUsageWizardFragment();
+		for (Fragment fragment : getSupportFragmentManager().getFragments()) {
-		if (wizardFragment != null) {
+			if (fragment instanceof DownloadEvents) {
-			wizardFragment.downloadInProgress();
+				((DownloadEvents) fragment).downloadInProgress();
 			}
-		WeakReference<MapContextMenuFragment> fragmentRef = getContextMenu().findMenuFragment();
-		if (fragmentRef != null) {
-			fragmentRef.get().downloadInProgress();
 		}
 		if (dashboardOnMap.isVisible()) {
 			dashboardOnMap.onDownloadInProgress();
@@ -1644,13 +1636,10 @@ public class MapActivity extends OsmandActionBarActivity implements DownloadEven
 
 	@Override
 	public void downloadHasFinished() {
-		FirstUsageWizardFragment wizardFragment = getFirstUsageWizardFragment();
+		for (Fragment fragment : getSupportFragmentManager().getFragments()) {
-		if (wizardFragment != null) {
+			if (fragment instanceof DownloadEvents) {
-			wizardFragment.downloadHasFinished();
+				((DownloadEvents) fragment).downloadHasFinished();
 			}
-		WeakReference<MapContextMenuFragment> fragmentRef = getContextMenu().findMenuFragment();
-		if (fragmentRef != null) {
-			fragmentRef.get().downloadHasFinished();
 		}
 		if (dashboardOnMap.isVisible()) {
 			dashboardOnMap.onDownloadHasFinished();

OsmAnd/src/net/osmand/plus/download/DownloadIndexesThread.java

@@ -52,7 +52,7 @@ public class DownloadIndexesThread {
 	private static final int NOTIFICATION_ID = 45;
 	private OsmandApplication app;
 
-	private Set<DownloadEvents> uiCallbacks = new HashSet<>();
+	private DownloadEvents uiActivity = null;
 	private DatabaseHelper dbHelper;
 	private DownloadFileHelper downloadFileHelper;
 	private List<BasicProgressAsyncTask<?, ?, ?, ?>> currentRunningTask = Collections.synchronizedList(new ArrayList<BasicProgressAsyncTask<?, ?, ?, ?>>());
@@ -87,20 +87,20 @@ public class DownloadIndexesThread {
 
 	/// UI notifications methods
 	public void setUiActivity(DownloadEvents uiActivity) {
-		uiCallbacks.add(uiActivity);
+		this.uiActivity = uiActivity;
 	}
 
 	public void resetUiActivity(DownloadEvents uiActivity) {
-		uiCallbacks.remove(uiActivity);
+		if (this.uiActivity == uiActivity) {
+			this.uiActivity = null;
+		}
 	}
 
 	@UiThread
 	protected void downloadInProgress() {
-		for (DownloadEvents uiActivity : uiCallbacks) {
 		if (uiActivity != null) {
 			uiActivity.downloadInProgress();
 		}
-		}
 		updateNotification();
 	}
 	
@@ -151,11 +151,9 @@ public class DownloadIndexesThread {
 
 	@UiThread
 	protected void downloadHasFinished() {
-		for (DownloadEvents uiActivity : uiCallbacks) {
 		if (uiActivity != null) {
 			uiActivity.downloadHasFinished();
 		}
-		}
 		updateNotification();
 	}
 
@@ -188,12 +186,10 @@ public class DownloadIndexesThread {
 	
 	@UiThread
 	protected void newDownloadIndexes() {
-		for (DownloadEvents uiActivity : uiCallbacks) {
 		if (uiActivity != null) {
 			uiActivity.newDownloadIndexes();
 		}
 	}
-	}
 
 
 	// PUBLIC API
@@ -258,11 +254,9 @@ public class DownloadIndexesThread {
 				return;
 			}	
 		}
-		for (DownloadEvents uiActivity : uiCallbacks) {
+		if (uiActivity instanceof Activity) {
-			if(uiActivity instanceof Activity) {
 			app.logEvent((Activity) uiActivity, "download_files");
 		}
-		}
 		for(IndexItem item : items) {
 			if (!item.equals(currentDownloadingItem) && !indexItemDownloading.contains(item)) {
 				indexItemDownloading.add(item);
@@ -460,14 +454,12 @@ public class DownloadIndexesThread {
 			currentRunningTask.add(this);
 			super.onPreExecute();
 			downloadFileHelper.setInterruptDownloading(false);
-			for (DownloadEvents uiActivity : uiCallbacks) {
 			if (uiActivity instanceof Activity) {
 				View mainView = ((Activity) uiActivity).findViewById(R.id.MainLayout);
 				if (mainView != null) {
 					mainView.setKeepScreenOn(true);
 				}
 			}
-			}
 			startTask(ctx.getString(R.string.shared_string_downloading) + ctx.getString(R.string.shared_string_ellipsis), -1);
 		}
 
@@ -476,14 +468,12 @@ public class DownloadIndexesThread {
 			if (result != null && result.length() > 0) {
 				Toast.makeText(ctx, result, Toast.LENGTH_LONG).show();
 			}
-			for (DownloadEvents uiActivity : uiCallbacks) {
 			if (uiActivity instanceof Activity) {
 				View mainView = ((Activity) uiActivity).findViewById(R.id.MainLayout);
 				if (mainView != null) {
 					mainView.setKeepScreenOn(false);
 				}
 			}
-			}
 			currentRunningTask.remove(this);
 			indexes.updateFilesToUpdate();
 			downloadHasFinished();

OsmAnd/src/net/osmand/plus/wikivoyage/explore/ExploreTabFragment.java

@@ -67,18 +67,6 @@ public class ExploreTabFragment extends BaseOsmAndFragment implements DownloadIn
 		return mainView;
 	}
 
-	@Override
-	public void onResume() {
-		super.onResume();
-		getMyApplication().getDownloadThread().setUiActivity(this);
-	}
-
-	@Override
-	public void onPause() {
-		super.onPause();
-		getMyApplication().getDownloadThread().resetUiActivity(this);
-	}
-
 	@Override
 	public void newDownloadIndexes() {
 		if (downloadIndexesRequested) {

OsmAnd/src/net/osmand/plus/wikivoyage/explore/WikivoyageExploreDialogFragment.java

@@ -24,13 +24,14 @@ import net.osmand.PicassoUtils;
 import net.osmand.plus.LockableViewPager;
 import net.osmand.plus.R;
 import net.osmand.plus.base.BaseOsmAndFragment;
+import net.osmand.plus.download.DownloadIndexesThread;
 import net.osmand.plus.wikivoyage.WikivoyageBaseDialogFragment;
 import net.osmand.plus.wikivoyage.search.WikivoyageSearchDialogFragment;
 
 import java.util.Arrays;
 import java.util.List;
 
-public class WikivoyageExploreDialogFragment extends WikivoyageBaseDialogFragment {
+public class WikivoyageExploreDialogFragment extends WikivoyageBaseDialogFragment implements DownloadIndexesThread.DownloadEvents {
 
 	public static final String TAG = "WikivoyageExploreDialogFragment";
 
@@ -146,6 +147,21 @@ public class WikivoyageExploreDialogFragment extends WikivoyageBaseDialogFragmen
 		}
 	}
 
+	@Override
+	public void newDownloadIndexes() {
+		exploreTabFragment.newDownloadIndexes();
+	}
+
+	@Override
+	public void downloadInProgress() {
+		exploreTabFragment.downloadInProgress();
+	}
+
+	@Override
+	public void downloadHasFinished() {
+		exploreTabFragment.downloadHasFinished();
+	}
+
 	private ColorStateList createBottomNavColorStateList() {
 		return AndroidUtils.createCheckedColorStateList(getContext(), nightMode,
 				R.color.icon_color, R.color.wikivoyage_active_light,