Refactor UI event listeners.

briar-android/src/main/java/org/briarproject/briar/android/AndroidNotificationManagerImpl.java

@@ -104,9 +104,7 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 	private ContactId blockedContact = null;
 	private GroupId blockedGroup = null;
 	private boolean blockSignInReminder = false;
-	private boolean blockContacts = false, blockGroups = false;
-	private boolean blockForums = false, blockBlogs = false;
-	private boolean blockIntroductions = false;
+	private boolean blockBlogs = false;
 	private long lastSound = 0;
 
 	private volatile Settings settings = new Settings();
@@ -237,7 +235,6 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 		}
 	}
 
-
 	@UiThread
 	@Override
 	public Notification getForegroundNotification() {
@@ -278,13 +275,11 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 		notificationManager.notify(ONGOING_NOTIFICATION_ID, n);
 	}
 
+	@UiThread
 	private void showContactNotification(ContactId c) {
-		androidExecutor.runOnUiThread(() -> {
-			if (blockContacts) return;
-			if (c.equals(blockedContact)) return;
-			contactCounts.add(c);
-			updateContactNotification(true);
-		});
+		if (c.equals(blockedContact)) return;
+		contactCounts.add(c);
+		updateContactNotification(true);
 	}
 
 	@Override
@@ -381,12 +376,9 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 
 	@UiThread
 	private void showGroupMessageNotification(GroupId g) {
-		androidExecutor.runOnUiThread(() -> {
-			if (blockGroups) return;
-			if (g.equals(blockedGroup)) return;
-			groupCounts.add(g);
-			updateGroupMessageNotification(true);
-		});
+		if (g.equals(blockedGroup)) return;
+		groupCounts.add(g);
+		updateGroupMessageNotification(true);
 	}
 
 	@Override
@@ -452,12 +444,9 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 
 	@UiThread
 	private void showForumPostNotification(GroupId g) {
-		androidExecutor.runOnUiThread(() -> {
-			if (blockForums) return;
-			if (g.equals(blockedGroup)) return;
-			forumCounts.add(g);
-			updateForumPostNotification(true);
-		});
+		if (g.equals(blockedGroup)) return;
+		forumCounts.add(g);
+		updateForumPostNotification(true);
 	}
 
 	@Override
@@ -522,12 +511,10 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 
 	@UiThread
 	private void showBlogPostNotification(GroupId g) {
-		androidExecutor.runOnUiThread(() -> {
-			if (blockBlogs) return;
-			if (g.equals(blockedGroup)) return;
-			blogCounts.add(g);
-			updateBlogPostNotification(true);
-		});
+		if (blockBlogs) return;
+		if (g.equals(blockedGroup)) return;
+		blogCounts.add(g);
+		updateBlogPostNotification(true);
 	}
 
 	@Override
@@ -575,12 +562,10 @@ class AndroidNotificationManagerImpl implements AndroidNotificationManager,
 				(Runnable) this::clearBlogPostNotification);
 	}
 
+	@UiThread
 	private void showIntroductionNotification() {
-		androidExecutor.runOnUiThread(() -> {
-			if (blockIntroductions) return;
-			introductionTotal++;
-			updateIntroductionNotification();
-		});
+		introductionTotal++;
+		updateIntroductionNotification();
 	}
 
 	@UiThread

briar-android/src/main/java/org/briarproject/briar/android/blog/BaseController.java

@@ -6,7 +6,6 @@ import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
-import org.briarproject.briar.android.DestroyableContext;
 import org.briarproject.briar.android.controller.handler.ExceptionHandler;
 import org.briarproject.briar.android.controller.handler.ResultExceptionHandler;
 import org.briarproject.briar.api.blog.BlogPostHeader;
@@ -36,10 +35,11 @@ interface BaseController {
 	void repeatPost(BlogPostItem item, @Nullable String comment,
 			ExceptionHandler<DbException> handler);
 
+	@UiThread
 	void setBlogListener(BlogListener listener);
 
 	@NotNullByDefault
-	interface BlogListener extends DestroyableContext {
+	interface BlogListener {
 
 		@UiThread
 		void onBlogPostAdded(BlogPostHeader header, boolean local);

briar-android/src/main/java/org/briarproject/briar/android/blog/BaseControllerImpl.java

@@ -86,15 +86,6 @@ abstract class BaseControllerImpl extends DbControllerImpl
 		this.listener = listener;
 	}
 
-	void onBlogPostAdded(BlogPostHeader h, boolean local) {
-		listener.runOnUiThreadUnlessDestroyed(
-				() -> listener.onBlogPostAdded(h, local));
-	}
-
-	void onBlogRemoved() {
-		listener.runOnUiThreadUnlessDestroyed(() -> listener.onBlogRemoved());
-	}
-
 	@Override
 	public void loadBlogPosts(GroupId groupId,
 			ResultExceptionHandler<Collection<BlogPostItem>, DbException> handler) {

briar-android/src/main/java/org/briarproject/briar/android/blog/BlogController.java

@@ -16,6 +16,7 @@ public interface BlogController extends BaseController {
 
 	void setGroupId(GroupId g);
 
+	@UiThread
 	void setBlogSharingListener(BlogSharingListener listener);
 
 	void loadBlogPosts(

briar-android/src/main/java/org/briarproject/briar/android/blog/BlogControllerImpl.java

@@ -49,8 +49,11 @@ class BlogControllerImpl extends BaseControllerImpl
 			Logger.getLogger(BlogControllerImpl.class.getName());
 
 	private final BlogSharingManager blogSharingManager;
+
+	// UI thread
+	private BlogSharingListener listener;
+
 	private volatile GroupId groupId = null;
-	private volatile BlogSharingListener listener;
 
 	@Inject
 	BlogControllerImpl(@DatabaseExecutor Executor dbExecutor,
@@ -102,7 +105,7 @@ class BlogControllerImpl extends BaseControllerImpl
 			BlogPostAddedEvent b = (BlogPostAddedEvent) e;
 			if (b.getGroupId().equals(groupId)) {
 				LOG.info("Blog post added");
-				onBlogPostAdded(b.getHeader(), b.isLocal());
+				listener.onBlogPostAdded(b.getHeader(), b.isLocal());
 			}
 		} else if (e instanceof BlogInvitationResponseReceivedEvent) {
 			BlogInvitationResponseReceivedEvent b =
@@ -110,32 +113,23 @@ class BlogControllerImpl extends BaseControllerImpl
 			BlogInvitationResponse r = b.getMessageHeader();
 			if (r.getShareableId().equals(groupId) && r.wasAccepted()) {
 				LOG.info("Blog invitation accepted");
-				onBlogInvitationAccepted(b.getContactId());
+				listener.onBlogInvitationAccepted(b.getContactId());
 			}
 		} else if (e instanceof ContactLeftShareableEvent) {
 			ContactLeftShareableEvent s = (ContactLeftShareableEvent) e;
 			if (s.getGroupId().equals(groupId)) {
 				LOG.info("Blog left by contact");
-				onBlogLeft(s.getContactId());
+				listener.onBlogLeft(s.getContactId());
 			}
 		} else if (e instanceof GroupRemovedEvent) {
 			GroupRemovedEvent g = (GroupRemovedEvent) e;
 			if (g.getGroup().getId().equals(groupId)) {
 				LOG.info("Blog removed");
-				onBlogRemoved();
+				listener.onBlogRemoved();
 			}
 		}
 	}
 
-	private void onBlogInvitationAccepted(ContactId c) {
-		listener.runOnUiThreadUnlessDestroyed(
-				() -> listener.onBlogInvitationAccepted(c));
-	}
-
-	private void onBlogLeft(ContactId c) {
-		listener.runOnUiThreadUnlessDestroyed(() -> listener.onBlogLeft(c));
-	}
-
 	@Override
 	public void loadBlogPosts(
 			ResultExceptionHandler<Collection<BlogPostItem>, DbException> handler) {

briar-android/src/main/java/org/briarproject/briar/android/blog/FeedController.java

@@ -17,6 +17,7 @@ public interface FeedController extends BaseController {
 
 	void loadPersonalBlog(ResultExceptionHandler<Blog, DbException> handler);
 
+	@UiThread
 	void setFeedListener(FeedListener listener);
 
 	@NotNullByDefault

briar-android/src/main/java/org/briarproject/briar/android/blog/FeedControllerImpl.java

@@ -34,13 +34,13 @@ import static org.briarproject.briar.api.blog.BlogManager.CLIENT_ID;
 
 @MethodsNotNullByDefault
 @ParametersNotNullByDefault
-class FeedControllerImpl extends BaseControllerImpl
-		implements FeedController {
+class FeedControllerImpl extends BaseControllerImpl implements FeedController {
 
 	private static final Logger LOG =
 			Logger.getLogger(FeedControllerImpl.class.getName());
 
-	private volatile FeedListener listener;
+	// UI thread
+	private FeedListener listener;
 
 	@Inject
 	FeedControllerImpl(@DatabaseExecutor Executor dbExecutor,
@@ -76,26 +76,22 @@ class FeedControllerImpl extends BaseControllerImpl
 		if (e instanceof BlogPostAddedEvent) {
 			BlogPostAddedEvent b = (BlogPostAddedEvent) e;
 			LOG.info("Blog post added");
-			onBlogPostAdded(b.getHeader(), b.isLocal());
+			listener.onBlogPostAdded(b.getHeader(), b.isLocal());
 		} else if (e instanceof GroupAddedEvent) {
 			GroupAddedEvent g = (GroupAddedEvent) e;
 			if (g.getGroup().getClientId().equals(CLIENT_ID)) {
 				LOG.info("Blog added");
-				onBlogAdded();
+				listener.onBlogAdded();
 			}
 		} else if (e instanceof GroupRemovedEvent) {
 			GroupRemovedEvent g = (GroupRemovedEvent) e;
 			if (g.getGroup().getClientId().equals(CLIENT_ID)) {
 				LOG.info("Blog removed");
-				onBlogRemoved();
+				listener.onBlogRemoved();
 			}
 		}
 	}
 
-	private void onBlogAdded() {
-		listener.runOnUiThreadUnlessDestroyed(() -> listener.onBlogAdded());
-	}
-
 	@Override
 	public void loadBlogPosts(
 			ResultExceptionHandler<Collection<BlogPostItem>, DbException> handler) {

briar-android/src/main/java/org/briarproject/briar/android/contact/ContactListFragment.java

@@ -2,6 +2,7 @@ package org.briarproject.briar.android.contact;
 
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.annotation.UiThread;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.app.ActivityOptionsCompat;
 import android.support.v4.util.Pair;
@@ -253,37 +254,34 @@ public class ContactListFragment extends BaseFragment implements EventListener {
 		}
 	}
 
+	@UiThread
 	private void updateItem(ContactId c, ConversationMessageHeader h) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			adapter.incrementRevision();
-			int position = adapter.findItemPosition(c);
-			ContactListItem item = adapter.getItemAt(position);
-			if (item != null) {
-				item.addMessage(h);
-				adapter.updateItemAt(position, item);
-			}
-		});
+		adapter.incrementRevision();
+		int position = adapter.findItemPosition(c);
+		ContactListItem item = adapter.getItemAt(position);
+		if (item != null) {
+			item.addMessage(h);
+			adapter.updateItemAt(position, item);
+		}
 	}
 
+	@UiThread
 	private void removeItem(ContactId c) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			adapter.incrementRevision();
-			int position = adapter.findItemPosition(c);
-			ContactListItem item = adapter.getItemAt(position);
-			if (item != null) adapter.remove(item);
-		});
+		adapter.incrementRevision();
+		int position = adapter.findItemPosition(c);
+		ContactListItem item = adapter.getItemAt(position);
+		if (item != null) adapter.remove(item);
 	}
 
+	@UiThread
 	private void setConnected(ContactId c, boolean connected) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			adapter.incrementRevision();
-			int position = adapter.findItemPosition(c);
-			ContactListItem item = adapter.getItemAt(position);
-			if (item != null) {
-				item.setConnected(connected);
-				adapter.updateItemAt(position, item);
-			}
-		});
+		adapter.incrementRevision();
+		int position = adapter.findItemPosition(c);
+		ContactListItem item = adapter.getItemAt(position);
+		if (item != null) {
+			item.setConnected(connected);
+			adapter.updateItemAt(position, item);
+		}
 	}
 
 }

briar-android/src/main/java/org/briarproject/briar/android/contactselection/ContactSelectorListener.java

@@ -4,12 +4,11 @@ import android.support.annotation.UiThread;
 
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
-import org.briarproject.briar.android.DestroyableContext;
 
 import java.util.Collection;
 
 @NotNullByDefault
-public interface ContactSelectorListener extends DestroyableContext {
+public interface ContactSelectorListener {
 
 	@UiThread
 	void contactsSelected(Collection<ContactId> contacts);

briar-android/src/main/java/org/briarproject/briar/android/controller/SharingController.java

@@ -4,7 +4,6 @@ import android.support.annotation.UiThread;
 
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
-import org.briarproject.briar.android.DestroyableContext;
 
 import java.util.Collection;
 
@@ -62,7 +61,8 @@ public interface SharingController {
 	@UiThread
 	int getTotalCount();
 
-	interface SharingListener extends DestroyableContext {
+	interface SharingListener {
+
 		@UiThread
 		void onSharingInfoUpdated(int total, int online);
 	}

briar-android/src/main/java/org/briarproject/briar/android/controller/SharingControllerImpl.java

@@ -1,5 +1,7 @@
 package org.briarproject.briar.android.controller;
 
+import android.support.annotation.UiThread;
+
 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.event.EventBus;
@@ -22,11 +24,13 @@ public class SharingControllerImpl implements SharingController, EventListener {
 	private final EventBus eventBus;
 	private final ConnectionRegistry connectionRegistry;
 
-	@Nullable
-	private volatile SharingListener listener;
-	// only access on @UiThread
+	// UI thread
 	private final Set<ContactId> contacts = new HashSet<>();
 
+	// UI thread
+	@Nullable
+	private SharingListener listener;
+
 	@Inject
 	SharingControllerImpl(EventBus eventBus,
 			ConnectionRegistry connectionRegistry) {
@@ -58,14 +62,13 @@ public class SharingControllerImpl implements SharingController, EventListener {
 		}
 	}
 
+	@UiThread
 	private void setConnected(ContactId c) {
-		if (listener == null) return;
-		listener.runOnUiThreadUnlessDestroyed(() -> {
-			if (contacts.contains(c)) {
-				int online = getOnlineCount();
-				listener.onSharingInfoUpdated(contacts.size(), online);
-			}
-		});
+		if (listener == null) throw new IllegalStateException();
+		if (contacts.contains(c)) {
+			int online = getOnlineCount();
+			listener.onSharingInfoUpdated(contacts.size(), online);
+		}
 	}
 
 	@Override

briar-android/src/main/java/org/briarproject/briar/android/conversation/ConversationActivity.java

@@ -398,22 +398,17 @@ public class ConversationActivity extends BriarActivity
 		}
 	}
 
+	@UiThread
 	private void displayContactOnlineStatus() {
-		runOnUiThreadUnlessDestroyed(() -> {
-			if (connectionRegistry.isConnected(contactId)) {
-				toolbarStatus.setImageDrawable(ContextCompat
-						.getDrawable(ConversationActivity.this,
-								R.drawable.contact_online));
-				toolbarStatus
-						.setContentDescription(getString(R.string.online));
-			} else {
-				toolbarStatus.setImageDrawable(ContextCompat
-						.getDrawable(ConversationActivity.this,
-								R.drawable.contact_offline));
-				toolbarStatus
-						.setContentDescription(getString(R.string.offline));
-			}
-		});
+		if (connectionRegistry.isConnected(contactId)) {
+			toolbarStatus.setImageDrawable(ContextCompat.getDrawable(
+					ConversationActivity.this, R.drawable.contact_online));
+			toolbarStatus.setContentDescription(getString(R.string.online));
+		} else {
+			toolbarStatus.setImageDrawable(ContextCompat.getDrawable(
+					ConversationActivity.this, R.drawable.contact_offline));
+			toolbarStatus.setContentDescription(getString(R.string.offline));
+		}
 	}
 
 	private void loadMessages() {
@@ -583,7 +578,7 @@ public class ConversationActivity extends BriarActivity
 			ContactRemovedEvent c = (ContactRemovedEvent) e;
 			if (c.getContactId().equals(contactId)) {
 				LOG.info("Contact removed");
-				finishOnUiThread();
+				supportFinishAfterTransition();
 			}
 		} else if (e instanceof ConversationMessageReceivedEvent) {
 			ConversationMessageReceivedEvent p =
@@ -619,47 +614,43 @@ public class ConversationActivity extends BriarActivity
 		}
 	}
 
+	@UiThread
 	private void addConversationItem(ConversationItem item) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			adapter.incrementRevision();
-			adapter.add(item);
-			// When adding a new message, scroll to the bottom if the
-			// conversation is visible, even if we're not currently at
-			// the bottom
-			if (getLifecycle().getCurrentState().isAtLeast(STARTED))
-				scrollToBottom();
-		});
+		adapter.incrementRevision();
+		adapter.add(item);
+		// When adding a new message, scroll to the bottom if the conversation
+		// is visible, even if we're not currently at the bottom
+		if (getLifecycle().getCurrentState().isAtLeast(STARTED))
+			scrollToBottom();
 	}
 
+	@UiThread
 	private void onNewConversationMessage(ConversationMessageHeader h) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			if (h instanceof ConversationRequest ||
-					h instanceof ConversationResponse) {
-				// contact name might not have been loaded
-				observeOnce(viewModel.getContactDisplayName(), this,
-						name -> addConversationItem(h.accept(visitor)));
-			} else {
-				// visitor also loads message text (if existing)
-				addConversationItem(h.accept(visitor));
-			}
-		});
+		if (h instanceof ConversationRequest ||
+				h instanceof ConversationResponse) {
+			// contact name might not have been loaded
+			observeOnce(viewModel.getContactDisplayName(), this,
+					name -> addConversationItem(h.accept(visitor)));
+		} else {
+			// visitor also loads message text (if existing)
+			addConversationItem(h.accept(visitor));
+		}
 	}
 
+	@UiThread
 	private void markMessages(Collection<MessageId> messageIds, boolean sent,
 			boolean seen) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			adapter.incrementRevision();
-			Set<MessageId> messages = new HashSet<>(messageIds);
-			SparseArray<ConversationItem> list = adapter.getOutgoingMessages();
-			for (int i = 0; i < list.size(); i++) {
-				ConversationItem item = list.valueAt(i);
-				if (messages.contains(item.getId())) {
-					item.setSent(sent);
-					item.setSeen(seen);
-					adapter.notifyItemChanged(list.keyAt(i));
-				}
+		adapter.incrementRevision();
+		Set<MessageId> messages = new HashSet<>(messageIds);
+		SparseArray<ConversationItem> list = adapter.getOutgoingMessages();
+		for (int i = 0; i < list.size(); i++) {
+			ConversationItem item = list.valueAt(i);
+			if (messages.contains(item.getId())) {
+				item.setSent(sent);
+				item.setSeen(seen);
+				adapter.notifyItemChanged(list.keyAt(i));
 			}
-		});
+		}
 	}
 
 	@Override

briar-android/src/main/java/org/briarproject/briar/android/forum/ForumControllerImpl.java

@@ -79,7 +79,7 @@ class ForumControllerImpl extends
 			ForumPostReceivedEvent f = (ForumPostReceivedEvent) e;
 			if (f.getGroupId().equals(getGroupId())) {
 				LOG.info("Forum post received, adding...");
-				onForumPostReceived(f.getHeader(), f.getText());
+				listener.onItemReceived(buildItem(f.getHeader(), f.getText()));
 			}
 		} else if (e instanceof ForumInvitationResponseReceivedEvent) {
 			ForumInvitationResponseReceivedEvent f =
@@ -87,13 +87,13 @@ class ForumControllerImpl extends
 			ForumInvitationResponse r = f.getMessageHeader();
 			if (r.getShareableId().equals(getGroupId()) && r.wasAccepted()) {
 				LOG.info("Forum invitation was accepted");
-				onForumInvitationAccepted(f.getContactId());
+				listener.onInvitationAccepted(f.getContactId());
 			}
 		} else if (e instanceof ContactLeftShareableEvent) {
 			ContactLeftShareableEvent c = (ContactLeftShareableEvent) e;
 			if (c.getGroupId().equals(getGroupId())) {
 				LOG.info("Forum left by contact");
-				onForumLeft(c.getContactId());
+				listener.onForumLeft(c.getContactId());
 			}
 		}
 	}
@@ -168,8 +168,7 @@ class ForumControllerImpl extends
 	}
 
 	@Override
-	protected ForumPostHeader addLocalMessage(ForumPost p)
-			throws DbException {
+	protected ForumPostHeader addLocalMessage(ForumPost p) throws DbException {
 		return forumManager.addLocalPost(p);
 	}
 
@@ -183,19 +182,4 @@ class ForumControllerImpl extends
 		return new ForumItem(header, text);
 	}
 
-	private void onForumPostReceived(ForumPostHeader h, String text) {
-		ForumItem item = buildItem(h, text);
-		listener.runOnUiThreadUnlessDestroyed(
-				() -> listener.onItemReceived(item));
-	}
-
-	private void onForumInvitationAccepted(ContactId c) {
-		listener.runOnUiThreadUnlessDestroyed(
-				() -> listener.onInvitationAccepted(c));
-	}
-
-	private void onForumLeft(ContactId c) {
-		listener.runOnUiThreadUnlessDestroyed(() -> listener.onForumLeft(c));
-	}
-
 }

briar-android/src/main/java/org/briarproject/briar/android/forum/ForumListFragment.java

@@ -2,6 +2,7 @@ package org.briarproject.briar.android.forum;
 
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.annotation.UiThread;
 import android.support.design.widget.Snackbar;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.widget.LinearLayoutManager;
@@ -244,25 +245,23 @@ public class ForumListFragment extends BaseEventFragment implements
 		}
 	}
 
+	@UiThread
 	private void updateItem(GroupId g, ForumPostHeader m) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			adapter.incrementRevision();
-			int position = adapter.findItemPosition(g);
-			ForumListItem item = adapter.getItemAt(position);
-			if (item != null) {
-				item.addHeader(m);
-				adapter.updateItemAt(position, item);
-			}
-		});
+		adapter.incrementRevision();
+		int position = adapter.findItemPosition(g);
+		ForumListItem item = adapter.getItemAt(position);
+		if (item != null) {
+			item.addHeader(m);
+			adapter.updateItemAt(position, item);
+		}
 	}
 
+	@UiThread
 	private void removeForum(GroupId g) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			adapter.incrementRevision();
-			int position = adapter.findItemPosition(g);
-			ForumListItem item = adapter.getItemAt(position);
-			if (item != null) adapter.remove(item);
-		});
+		adapter.incrementRevision();
+		int position = adapter.findItemPosition(g);
+		ForumListItem item = adapter.getItemAt(position);
+		if (item != null) adapter.remove(item);
 	}
 
 	@Override

briar-android/src/main/java/org/briarproject/briar/android/keyagreement/KeyAgreementFragment.java

@@ -285,38 +285,32 @@ public class KeyAgreementFragment extends BaseEventFragment
 		}
 	}
 
+	@UiThread
 	private void keyAgreementFailed() {
-		runOnUiThreadUnlessDestroyed(() -> {
-			reset();
-			listener.keyAgreementFailed();
-		});
+		reset();
+		listener.keyAgreementFailed();
 	}
 
+	@UiThread
 	private void keyAgreementWaiting() {
-		runOnUiThreadUnlessDestroyed(
-				() -> status.setText(listener.keyAgreementWaiting()));
+		status.setText(listener.keyAgreementWaiting());
 	}
 
+	@UiThread
 	private void keyAgreementStarted() {
-		runOnUiThreadUnlessDestroyed(() -> {
-			qrCodeView.setVisibility(INVISIBLE);
-			statusView.setVisibility(VISIBLE);
-			status.setText(listener.keyAgreementStarted());
-		});
+		qrCodeView.setVisibility(INVISIBLE);
+		statusView.setVisibility(VISIBLE);
+		status.setText(listener.keyAgreementStarted());
 	}
 
 	private void keyAgreementAborted(boolean remoteAborted) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			reset();
-			listener.keyAgreementAborted(remoteAborted);
-		});
+		reset();
+		listener.keyAgreementAborted(remoteAborted);
 	}
 
 	private void keyAgreementFinished(KeyAgreementResult result) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			statusView.setVisibility(VISIBLE);
-			status.setText(listener.keyAgreementFinished(result));
-		});
+		statusView.setVisibility(VISIBLE);
+		status.setText(listener.keyAgreementFinished(result));
 	}
 
 	private void setQrCode(Payload localPayload) {

briar-android/src/main/java/org/briarproject/briar/android/login/OpenDatabaseActivity.java

@@ -73,12 +73,9 @@ public class OpenDatabaseActivity extends BriarActivity
 	public void eventOccurred(Event e) {
 		if (e instanceof LifecycleEvent) {
 			LifecycleState state = ((LifecycleEvent) e).getLifecycleState();
-			if (state.isAfter(STARTING_SERVICES))
-				runOnUiThreadUnlessDestroyed(this::finishAndStartApp);
-			else if (state == MIGRATING_DATABASE)
-				runOnUiThreadUnlessDestroyed(this::showMigration);
-			else if (state == COMPACTING_DATABASE)
-				runOnUiThreadUnlessDestroyed(this::showCompaction);
+			if (state.isAfter(STARTING_SERVICES)) finishAndStartApp();
+			else if (state == MIGRATING_DATABASE) showMigration();
+			else if (state == COMPACTING_DATABASE) showCompaction();
 		}
 	}
 

briar-android/src/main/java/org/briarproject/briar/android/navdrawer/NavDrawerActivity.java

@@ -6,6 +6,7 @@ import android.content.res.Configuration;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.annotation.UiThread;
 import android.support.design.widget.NavigationView;
 import android.support.design.widget.NavigationView.OnNavigationItemSelectedListener;
 import android.support.v4.app.ActivityCompat;
@@ -435,17 +436,16 @@ public class NavDrawerActivity extends BriarActivity implements
 		};
 	}
 
+	@UiThread
 	private void setTransport(TransportId id, boolean enabled) {
-		runOnUiThreadUnlessDestroyed(() -> {
-			if (transports == null || transportsAdapter == null) return;
-			for (Transport t : transports) {
-				if (t.id.equals(id)) {
-					t.enabled = enabled;
-					transportsAdapter.notifyDataSetChanged();
-					break;
-				}
+		if (transports == null || transportsAdapter == null) return;
+		for (Transport t : transports) {
+			if (t.id.equals(id)) {
+				t.enabled = enabled;
+				transportsAdapter.notifyDataSetChanged();
+				break;
 			}
-		});
+		}
 	}
 
 	private void updateTransports() {

briar-android/src/main/java/org/briarproject/briar/android/navdrawer/NavDrawerControllerImpl.java

@@ -2,6 +2,7 @@ package org.briarproject.briar.android.navdrawer;
 
 import android.app.Activity;
 import android.content.Context;
+import android.support.annotation.UiThread;
 
 import org.briarproject.bramble.api.db.DatabaseExecutor;
 import org.briarproject.bramble.api.db.DbException;
@@ -53,7 +54,8 @@ public class NavDrawerControllerImpl extends DbControllerImpl
 	private final SettingsManager settingsManager;
 	private final EventBus eventBus;
 
-	private volatile TransportStateListener listener;
+	// UI thread
+	private TransportStateListener listener;
 
 	@Inject
 	NavDrawerControllerImpl(@DatabaseExecutor Executor dbExecutor,
@@ -102,9 +104,9 @@ public class NavDrawerControllerImpl extends DbControllerImpl
 		}
 	}
 
+	@UiThread
 	private void transportStateUpdate(TransportId id, boolean enabled) {
-		listener.runOnUiThreadUnlessDestroyed(
-				() -> listener.stateUpdate(id, enabled));
+		listener.stateUpdate(id, enabled);
 	}
 
 	@Override

briar-android/src/main/java/org/briarproject/briar/android/navdrawer/TransportStateListener.java

@@ -1,9 +1,11 @@
 package org.briarproject.briar.android.navdrawer;
 
+import android.support.annotation.UiThread;
+
 import org.briarproject.bramble.api.plugin.TransportId;
-import org.briarproject.briar.android.DestroyableContext;
 
-interface TransportStateListener extends DestroyableContext {
+interface TransportStateListener {
 
+	@UiThread
 	void stateUpdate(TransportId id, boolean enabled);
 }

briar-android/src/main/java/org/briarproject/briar/android/privategroup/conversation/GroupControllerImpl.java

@@ -84,31 +84,26 @@ class GroupControllerImpl extends
 			GroupMessageAddedEvent g = (GroupMessageAddedEvent) e;
 			if (!g.isLocal() && g.getGroupId().equals(getGroupId())) {
 				LOG.info("Group message received, adding...");
-				GroupMessageItem item = buildItem(g.getHeader(), g.getText());
-				listener.runOnUiThreadUnlessDestroyed(
-						() -> listener.onItemReceived(item));
+				listener.onItemReceived(buildItem(g.getHeader(), g.getText()));
 			}
 		} else if (e instanceof ContactRelationshipRevealedEvent) {
 			ContactRelationshipRevealedEvent c =
 					(ContactRelationshipRevealedEvent) e;
 			if (getGroupId().equals(c.getGroupId())) {
-				listener.runOnUiThreadUnlessDestroyed(() ->
-						listener.onContactRelationshipRevealed(c.getMemberId(),
-								c.getContactId(), c.getVisibility()));
+				listener.onContactRelationshipRevealed(c.getMemberId(),
+						c.getContactId(), c.getVisibility());
 			}
 		} else if (e instanceof GroupInvitationResponseReceivedEvent) {
 			GroupInvitationResponseReceivedEvent g =
 					(GroupInvitationResponseReceivedEvent) e;
 			GroupInvitationResponse r = g.getMessageHeader();
 			if (getGroupId().equals(r.getShareableId()) && r.wasAccepted()) {
-				listener.runOnUiThreadUnlessDestroyed(
-						() -> listener.onInvitationAccepted(g.getContactId()));
+				listener.onInvitationAccepted(g.getContactId());
 			}
 		} else if (e instanceof GroupDissolvedEvent) {
 			GroupDissolvedEvent g = (GroupDissolvedEvent) e;
 			if (getGroupId().equals(g.getGroupId())) {
-				listener.runOnUiThreadUnlessDestroyed(
-						() -> listener.onGroupDissolved());
+				listener.onGroupDissolved();
 			}
 		}
 	}

briar-android/src/main/java/org/briarproject/briar/android/privategroup/list/GroupListController.java

@@ -5,7 +5,6 @@ import android.support.annotation.UiThread;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
-import org.briarproject.briar.android.DestroyableContext;
 import org.briarproject.briar.android.controller.DbController;
 import org.briarproject.briar.android.controller.handler.ExceptionHandler;
 import org.briarproject.briar.android.controller.handler.ResultExceptionHandler;
@@ -19,6 +18,7 @@ interface GroupListController extends DbController {
 	/**
 	 * The listener must be set right after the controller was injected
 	 */
+	@UiThread
 	void setGroupListListener(GroupListListener listener);
 
 	@UiThread
@@ -35,7 +35,7 @@ interface GroupListController extends DbController {
 	void loadAvailableGroups(
 			ResultExceptionHandler<Integer, DbException> result);
 
-	interface GroupListListener extends DestroyableContext {
+	interface GroupListListener {
 
 		@UiThread
 		void onGroupMessageAdded(GroupMessageHeader header);

briar-android/src/main/java/org/briarproject/briar/android/privategroup/list/GroupListControllerImpl.java

@@ -23,7 +23,6 @@ import org.briarproject.briar.android.controller.handler.ExceptionHandler;
 import org.briarproject.briar.android.controller.handler.ResultExceptionHandler;
 import org.briarproject.briar.api.android.AndroidNotificationManager;
 import org.briarproject.briar.api.client.MessageTracker.GroupCount;
-import org.briarproject.briar.api.privategroup.GroupMessageHeader;
 import org.briarproject.briar.api.privategroup.PrivateGroup;
 import org.briarproject.briar.api.privategroup.PrivateGroupManager;
 import org.briarproject.briar.api.privategroup.event.GroupDissolvedEvent;
@@ -61,7 +60,8 @@ class GroupListControllerImpl extends DbControllerImpl
 	private final AndroidNotificationManager notificationManager;
 	private final EventBus eventBus;
 
-	protected volatile GroupListListener listener;
+	// UI thread
+	private GroupListListener listener;
 
 	@Inject
 	GroupListControllerImpl(@DatabaseExecutor Executor dbExecutor,
@@ -85,9 +85,7 @@ class GroupListControllerImpl extends DbControllerImpl
 	@Override
 	@CallSuper
 	public void onStart() {
-		if (listener == null)
-			throw new IllegalStateException(
-					"GroupListListener needs to be attached");
+		if (listener == null) throw new IllegalStateException();
 		eventBus.addListener(this);
 		notificationManager.clearAllGroupMessageNotifications();
 	}
@@ -104,54 +102,31 @@ class GroupListControllerImpl extends DbControllerImpl
 		if (e instanceof GroupMessageAddedEvent) {
 			GroupMessageAddedEvent g = (GroupMessageAddedEvent) e;
 			LOG.info("Private group message added");
-			onGroupMessageAdded(g.getHeader());
+			listener.onGroupMessageAdded(g.getHeader());
 		} else if (e instanceof GroupInvitationRequestReceivedEvent) {
 			LOG.info("Private group invitation received");
-			onGroupInvitationReceived();
+			listener.onGroupInvitationReceived();
 		} else if (e instanceof GroupAddedEvent) {
 			GroupAddedEvent g = (GroupAddedEvent) e;
 			ClientId id = g.getGroup().getClientId();
 			if (id.equals(CLIENT_ID)) {
 				LOG.info("Private group added");
-				onGroupAdded(g.getGroup().getId());
+				listener.onGroupAdded(g.getGroup().getId());
 			}
 		} else if (e instanceof GroupRemovedEvent) {
 			GroupRemovedEvent g = (GroupRemovedEvent) e;
 			ClientId id = g.getGroup().getClientId();
 			if (id.equals(CLIENT_ID)) {
 				LOG.info("Private group removed");
-				onGroupRemoved(g.getGroup().getId());
+				listener.onGroupRemoved(g.getGroup().getId());
 			}
 		} else if (e instanceof GroupDissolvedEvent) {
 			GroupDissolvedEvent g = (GroupDissolvedEvent) e;
 			LOG.info("Private group dissolved");
-			onGroupDissolved(g.getGroupId());
+			listener.onGroupDissolved(g.getGroupId());
 		}
 	}
 
-	private void onGroupMessageAdded(GroupMessageHeader h) {
-		listener.runOnUiThreadUnlessDestroyed(
-				() -> listener.onGroupMessageAdded(h));
-	}
-
-	private void onGroupInvitationReceived() {
-		listener.runOnUiThreadUnlessDestroyed(
-				() -> listener.onGroupInvitationReceived());
-	}
-
-	private void onGroupAdded(GroupId g) {
-		listener.runOnUiThreadUnlessDestroyed(() -> listener.onGroupAdded(g));
-	}
-
-	private void onGroupRemoved(GroupId g) {
-		listener.runOnUiThreadUnlessDestroyed(() -> listener.onGroupRemoved(g));
-	}
-
-	private void onGroupDissolved(GroupId g) {
-		listener.runOnUiThreadUnlessDestroyed(
-				() -> listener.onGroupDissolved(g));
-	}
-
 	@Override
 	public void loadGroups(
 			ResultExceptionHandler<Collection<GroupItem>, DbException> handler) {

briar-android/src/main/java/org/briarproject/briar/android/privategroup/memberlist/GroupMemberListActivity.java

@@ -95,8 +95,7 @@ public class GroupMemberListActivity extends BriarActivity
 		} else if (e instanceof GroupRemovedEvent) {
 			GroupRemovedEvent g = (GroupRemovedEvent) e;
 			if (g.getGroup().getId().equals(groupId)) {
-				runOnUiThreadUnlessDestroyed(
-						this::supportFinishAfterTransition);
+				supportFinishAfterTransition();
 			}
 		}
 		// TODO ContactConnectedEvent and ContactDisconnectedEvent

briar-android/src/main/java/org/briarproject/briar/android/sharing/InvitationControllerImpl.java

@@ -39,6 +39,8 @@ public abstract class InvitationControllerImpl<I extends InvitationItem>
 			Logger.getLogger(InvitationControllerImpl.class.getName());
 
 	private final EventBus eventBus;
+
+	// UI thread
 	protected InvitationListener listener;
 
 	public InvitationControllerImpl(@DatabaseExecutor Executor dbExecutor,

briar-android/src/main/java/org/briarproject/briar/android/sharing/SharingStatusActivity.java

@@ -100,8 +100,7 @@ abstract class SharingStatusActivity extends BriarActivity
 		} else if (e instanceof GroupRemovedEvent) {
 			GroupRemovedEvent g = (GroupRemovedEvent) e;
 			if (g.getGroup().getId().equals(getGroupId())) {
-				runOnUiThreadUnlessDestroyed(
-						this::supportFinishAfterTransition);
+				supportFinishAfterTransition();
 			}
 		}
 		// TODO ContactConnectedEvent and ContactDisconnectedEvent

briar-android/src/main/java/org/briarproject/briar/android/threaded/ThreadListController.java

@@ -7,7 +7,6 @@ import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
-import org.briarproject.briar.android.DestroyableContext;
 import org.briarproject.briar.android.controller.ActivityLifecycleController;
 import org.briarproject.briar.android.controller.handler.ExceptionHandler;
 import org.briarproject.briar.android.controller.handler.ResultExceptionHandler;
@@ -52,7 +51,7 @@ public interface ThreadListController<G extends NamedGroup, I extends ThreadItem
 		void onInvitationAccepted(ContactId c);
 	}
 
-	interface ThreadListDataSource extends DestroyableContext {
+	interface ThreadListDataSource {
 
 		@UiThread @Nullable
 		MessageId getFirstVisibleMessageId();

briar-android/src/main/java/org/briarproject/briar/android/threaded/ThreadListControllerImpl.java

@@ -50,15 +50,18 @@ public abstract class ThreadListControllerImpl<G extends NamedGroup, I extends T
 			Logger.getLogger(ThreadListControllerImpl.class.getName());
 
 	private final EventBus eventBus;
+	private final MessageTracker messageTracker;
 	private final Map<MessageId, String> textCache = new ConcurrentHashMap<>();
+
 	private volatile GroupId groupId;
 
 	protected final IdentityManager identityManager;
 	protected final AndroidNotificationManager notificationManager;
 	protected final Executor cryptoExecutor;
 	protected final Clock clock;
-	private final MessageTracker messageTracker;
-	protected volatile L listener;
+
+	// UI thread
+	protected L listener;
 
 	protected ThreadListControllerImpl(@DatabaseExecutor Executor dbExecutor,
 			LifecycleManager lifecycleManager, IdentityManager identityManager,
@@ -121,8 +124,7 @@ public abstract class ThreadListControllerImpl<G extends NamedGroup, I extends T
 			GroupRemovedEvent s = (GroupRemovedEvent) e;
 			if (s.getGroup().getId().equals(getGroupId())) {
 				LOG.info("Group removed");
-				listener.runOnUiThreadUnlessDestroyed(
-						() -> listener.onGroupRemoved());
+				listener.onGroupRemoved();
 			}
 		}
 	}