Update another chunk of stuff to use JID objects

9 files changed, 104 insertions, 83 deletions

diff --git a/src/main/java/eu/siacs/conversations/entities/Message.java b/src/main/java/eu/siacs/conversations/entities/Message.java
index ce21addc8..53df1ddfc 100644
--- a/src/main/java/eu/siacs/conversations/entities/Message.java
+++ b/src/main/java/eu/siacs/conversations/entities/Message.java
@@ -248,13 +248,8 @@ public class Message extends AbstractEntity {
 		this.trueCounterpart = trueCounterpart;
 	}
 
-	public String getPresence() {
-		if (!counterpart.getResourcepart().isEmpty()) {
-			return counterpart.getResourcepart();
-		} else {
-            // TODO: Return empty string or null?
-			return null;
-		}
+	public Jid getPresence() {
+		return counterpart;
 	}
 
 	public void setDownloadable(Downloadable downloadable) {
diff --git a/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java b/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
index d53346b01..6f076e01d 100644
--- a/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
+++ b/src/main/java/eu/siacs/conversations/generator/MessageGenerator.java
@@ -114,7 +114,7 @@ public class MessageGenerator extends AbstractGenerator {
 	private MessagePacket generateError(MessagePacket origin) {
 		MessagePacket packet = new MessagePacket();
 		packet.setId(origin.getId());
-		packet.setAttribute("to", origin.getFrom());
+        packet.setTo(origin.getFrom());
 		packet.setBody(origin.getBody());
 		packet.setType(MessagePacket.TYPE_ERROR);
 		return packet;
@@ -170,7 +170,7 @@ public class MessageGenerator extends AbstractGenerator {
 			MessagePacket originalMessage, String namespace) {
 		MessagePacket receivedPacket = new MessagePacket();
 		receivedPacket.setType(MessagePacket.TYPE_NORMAL);
-		receivedPacket.setAttribute("to", originalMessage.getFrom());
+        receivedPacket.setTo(originalMessage.getFrom());
 		receivedPacket.setFrom(account.getFullJid());
 		Element received = receivedPacket.addChild("received", namespace);
 		received.setAttribute("id", originalMessage.getId());
diff --git a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
index cc9fca265..d480ce407 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
@@ -53,7 +53,7 @@ public class ConferenceDetailsActivity extends XmppActivity {
 		}
 	};
 
-	private List<User> users = new ArrayList<MucOptions.User>();
+	private List<User> users = new ArrayList<>();
 	private OnConversationUpdate onConvChanged = new OnConversationUpdate() {
 
 		@Override
@@ -142,7 +142,7 @@ public class ConferenceDetailsActivity extends XmppActivity {
 	@Override
 	protected String getShareableUri() {
 		if (conversation!=null) {
-			return "xmpp:"+conversation.getContactJid().split("/")[0]+"?join";
+			return "xmpp:"+conversation.getContactJid().toBareJid().toString()+"?join";
 		} else {
 			return "";
 		}
@@ -211,7 +211,7 @@ public class ConferenceDetailsActivity extends XmppActivity {
 		mYourPhoto.setImageBitmap(avatarService().get(
 				conversation.getAccount(), getPixel(48)));
 		setTitle(conversation.getName());
-		mFullJid.setText(conversation.getContactJid().split("/", 2)[0]);
+		mFullJid.setText(conversation.getContactJid().toBareJid().toString());
 		mYourNick.setText(conversation.getMucOptions().getActualNick());
 		mRoleAffiliaton = (TextView) findViewById(R.id.muc_role);
 		if (conversation.getMucOptions().online()) {
diff --git a/src/main/java/eu/siacs/conversations/ui/ContactDetailsActivity.java b/src/main/java/eu/siacs/conversations/ui/ContactDetailsActivity.java
index 7ac30e394..701edb47e 100644
--- a/src/main/java/eu/siacs/conversations/ui/ContactDetailsActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/ContactDetailsActivity.java
@@ -35,14 +35,16 @@ import eu.siacs.conversations.entities.Presences;
 import eu.siacs.conversations.services.XmppConnectionService.OnAccountUpdate;
 import eu.siacs.conversations.services.XmppConnectionService.OnRosterUpdate;
 import eu.siacs.conversations.utils.UIHelper;
+import eu.siacs.conversations.xmpp.jid.InvalidJidException;
+import eu.siacs.conversations.xmpp.jid.Jid;
 
 public class ContactDetailsActivity extends XmppActivity {
 	public static final String ACTION_VIEW_CONTACT = "view_contact";
 
 	private Contact contact;
 
-	private String accountJid;
-	private String contactJid;
+	private Jid accountJid;
+	private Jid contactJid;
 
 	private TextView contactJidTv;
 	private TextView accountJidTv;
@@ -68,7 +70,7 @@ public class ContactDetailsActivity extends XmppActivity {
 		public void onClick(DialogInterface dialog, int which) {
 			Intent intent = new Intent(Intent.ACTION_INSERT_OR_EDIT);
 			intent.setType(Contacts.CONTENT_ITEM_TYPE);
-			intent.putExtra(Intents.Insert.IM_HANDLE, contact.getJid());
+			intent.putExtra(Intents.Insert.IM_HANDLE, contact.getJid().toString());
 			intent.putExtra(Intents.Insert.IM_PROTOCOL,
 					CommonDataKinds.Im.PROTOCOL_JABBER);
 			intent.putExtra("finishActivityOnSaveCompleted", true);
@@ -174,9 +176,15 @@ public class ContactDetailsActivity extends XmppActivity {
 	protected void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		if (getIntent().getAction().equals(ACTION_VIEW_CONTACT)) {
-			this.accountJid = getIntent().getExtras().getString("account");
-			this.contactJid = getIntent().getExtras().getString("contact");
-		}
+            try {
+                this.accountJid = Jid.fromString(getIntent().getExtras().getString("account"));
+            } catch (final InvalidJidException ignored) {
+            }
+            try {
+                this.contactJid = Jid.fromString(getIntent().getExtras().getString("contact"));
+            } catch (final InvalidJidException ignored) {
+            }
+        }
 		setContentView(R.layout.activity_contact_details);
 
 		contactJidTv = (TextView) findViewById(R.id.details_contactjid);
@@ -318,7 +326,7 @@ public class ContactDetailsActivity extends XmppActivity {
 			contactJidTv.setText(contact.getJid() + " ("
 					+ contact.getPresences().size() + ")");
 		} else {
-			contactJidTv.setText(contact.getJid());
+			contactJidTv.setText(contact.getJid().toString());
 		}
 		accountJidTv.setText(getString(R.string.using_account, contact
 				.getAccount().getJid()));
diff --git a/src/main/java/eu/siacs/conversations/ui/ConversationFragment.java b/src/main/java/eu/siacs/conversations/ui/ConversationFragment.java
index 8754b9537..299f06c05 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConversationFragment.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConversationFragment.java
@@ -54,6 +54,7 @@ import eu.siacs.conversations.ui.adapter.MessageAdapter;
 import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
 import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
 import eu.siacs.conversations.utils.UIHelper;
+import eu.siacs.conversations.xmpp.jid.Jid;
 
 public class ConversationFragment extends Fragment {
 
@@ -92,11 +93,9 @@ public class ConversationFragment extends Fragment {
 		}
 	};
 	protected ListView messagesView;
-	protected LayoutInflater inflater;
-	protected List<Message> messageList = new ArrayList<Message>();
+	protected List<Message> messageList = new ArrayList<>();
 	protected MessageAdapter messageListAdapter;
 	protected Contact contact;
-	protected String queuedPqpMessage = null;
 	private EditMessage mEditMessage;
 	private ImageButton mSendButton;
 	private RelativeLayout snackbar;
@@ -147,7 +146,7 @@ public class ConversationFragment extends Fragment {
 			}
 		}
 	};
-	private ConcurrentLinkedQueue<Message> mEncryptedMessages = new ConcurrentLinkedQueue<Message>();
+	private ConcurrentLinkedQueue<Message> mEncryptedMessages = new ConcurrentLinkedQueue<>();
 	private boolean mDecryptJobRunning = false;
 	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
 
@@ -281,10 +280,10 @@ public class ConversationFragment extends Fragment {
 						if (message.getStatus() <= Message.STATUS_RECEIVED) {
 							if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 								if (message.getPresence() != null) {
-									highlightInConference(message.getPresence());
+									highlightInConference(message.getPresence().toString());
 								} else {
 									highlightInConference(message
-											.getCounterpart());
+											.getCounterpart().toString());
 								}
 							} else {
 								Contact contact = message.getConversation()
@@ -299,7 +298,7 @@ public class ConversationFragment extends Fragment {
 						}  else {
 							Account account = message.getConversation().getAccount();
 							Intent intent = new Intent(activity, EditAccountActivity.class);
-							intent.putExtra("jid", account.getJid());
+							intent.putExtra("jid", account.getJid().toString());
 							startActivity(intent);
 						}
 					}
@@ -430,9 +429,9 @@ public class ConversationFragment extends Fragment {
 				.createNewConnection(message);
 	}
 
-	protected void privateMessageWith(String counterpart) {
+	protected void privateMessageWith(final Jid counterpart) {
 		this.mEditMessage.setText("");
-		this.conversation.setNextPresence(counterpart);
+		this.conversation.setNextPresence(counterpart.toString());
 		updateChatMsgHint();
 	}
 
diff --git a/src/main/java/eu/siacs/conversations/ui/EditAccountActivity.java b/src/main/java/eu/siacs/conversations/ui/EditAccountActivity.java
index c1da35f51..7cccc31b2 100644
--- a/src/main/java/eu/siacs/conversations/ui/EditAccountActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/EditAccountActivity.java
@@ -47,6 +47,8 @@ import eu.siacs.conversations.ui.adapter.KnownHostsAdapter;
 import eu.siacs.conversations.utils.UIHelper;
 import eu.siacs.conversations.utils.Validator;
 import eu.siacs.conversations.xmpp.XmppConnection.Features;
+import eu.siacs.conversations.xmpp.jid.InvalidJidException;
+import eu.siacs.conversations.xmpp.jid.Jid;
 import eu.siacs.conversations.xmpp.pep.Avatar;
 
 public class EditAccountActivity extends XmppActivity {
@@ -68,7 +70,7 @@ public class EditAccountActivity extends XmppActivity {
 	private RelativeLayout mOtrFingerprintBox;
 	private ImageButton mOtrFingerprintToClipboardButton;
 
-	private String jidToEdit;
+	private Jid jidToEdit;
 	private Account mAccount;
 
 	private boolean mFetchingAvatar = false;
@@ -89,15 +91,14 @@ public class EditAccountActivity extends XmppActivity {
 				return;
 			}
 			boolean registerNewAccount = mRegisterNew.isChecked();
-			String[] jidParts = mAccountJid.getText().toString().split("@");
-			String username = jidParts[0];
-			String server;
-			if (jidParts.length >= 2) {
-				server = jidParts[1];
-			} else {
-				server = "";
-			}
-			String password = mPassword.getText().toString();
+            final Jid jid;
+            try {
+                jid = Jid.fromString(mAccountJid.getText().toString());
+            } catch (final InvalidJidException e) {
+                // TODO: Handle this error?
+                return;
+            }
+            String password = mPassword.getText().toString();
 			String passwordConfirm = mPasswordConfirm.getText().toString();
 			if (registerNewAccount) {
 				if (!password.equals(passwordConfirm)) {
@@ -109,19 +110,25 @@ public class EditAccountActivity extends XmppActivity {
 			}
 			if (mAccount != null) {
 				mAccount.setPassword(password);
-				mAccount.setUsername(username);
-				mAccount.setServer(server);
+                try {
+                    mAccount.setUsername(jid.hasLocalPart() ? jid.getLocalpart() : "");
+                    mAccount.setServer(jid.getDomainpart());
+                } catch (final InvalidJidException ignored) {
+                }
 				mAccount.setOption(Account.OPTION_REGISTER, registerNewAccount);
 				xmppConnectionService.updateAccount(mAccount);
 			} else {
-				if (xmppConnectionService.findAccountByJid(mAccountJid
-						.getText().toString()) != null) {
-					mAccountJid
-							.setError(getString(R.string.account_already_exists));
-					mAccountJid.requestFocus();
-					return;
-				}
-				mAccount = new Account(username, server, password);
+                try {
+                    if (xmppConnectionService.findAccountByJid(Jid.fromString(mAccountJid.getText().toString())) != null) {
+                        mAccountJid
+                                .setError(getString(R.string.account_already_exists));
+                        mAccountJid.requestFocus();
+                        return;
+                    }
+                } catch (InvalidJidException e) {
+                    return;
+                }
+                mAccount = new Account(jid.toBareJid(), password);
 				mAccount.setOption(Account.OPTION_USETLS, true);
 				mAccount.setOption(Account.OPTION_USECOMPRESSION, true);
 				mAccount.setOption(Account.OPTION_REGISTER, registerNewAccount);
@@ -191,8 +198,7 @@ public class EditAccountActivity extends XmppActivity {
 			finishInitialSetup(avatar);
 		}
 	};
-	private KnownHostsAdapter mKnownHostsAdapter;
-	private TextWatcher mTextWatcher = new TextWatcher() {
+    private TextWatcher mTextWatcher = new TextWatcher() {
 
 		@Override
 		public void onTextChanged(CharSequence s, int start, int before,
@@ -217,7 +223,7 @@ public class EditAccountActivity extends XmppActivity {
 			if (mAccount!=null) {
 				Intent intent = new Intent(getApplicationContext(),
 						PublishProfilePictureActivity.class);
-				intent.putExtra("account", mAccount.getJid());
+				intent.putExtra("account", mAccount.getJid().toString());
 				startActivity(intent);
 			}
 		}
@@ -235,7 +241,7 @@ public class EditAccountActivity extends XmppActivity {
 				} else {
 					intent = new Intent(getApplicationContext(),
 							PublishProfilePictureActivity.class);
-					intent.putExtra("account", mAccount.getJid());
+					intent.putExtra("account", mAccount.getJid().toString());
 					intent.putExtra("setup", true);
 				}
 				startActivity(intent);
@@ -358,8 +364,11 @@ public class EditAccountActivity extends XmppActivity {
 	protected void onStart() {
 		super.onStart();
 		if (getIntent() != null) {
-			this.jidToEdit = getIntent().getStringExtra("jid");
-			if (this.jidToEdit != null) {
+            try {
+                this.jidToEdit = Jid.fromString(getIntent().getStringExtra("jid"));
+            } catch (final InvalidJidException ignored) {
+            }
+            if (this.jidToEdit != null) {
 				this.mRegisterNew.setVisibility(View.GONE);
 				getActionBar().setTitle(getString(R.string.account_details));
 			} else {
@@ -379,9 +388,9 @@ public class EditAccountActivity extends XmppActivity {
 
 	@Override
 	protected void onBackendConnected() {
-		this.mKnownHostsAdapter = new KnownHostsAdapter(this,
-				android.R.layout.simple_list_item_1,
-				xmppConnectionService.getKnownHosts());
+        KnownHostsAdapter mKnownHostsAdapter = new KnownHostsAdapter(this,
+                android.R.layout.simple_list_item_1,
+                xmppConnectionService.getKnownHosts());
 		this.xmppConnectionService
 				.setOnAccountListChangedListener(this.mOnAccountUpdateListener);
 		if (this.jidToEdit != null) {
@@ -393,12 +402,12 @@ public class EditAccountActivity extends XmppActivity {
 			this.mCancelButton.setEnabled(false);
 			this.mCancelButton.setTextColor(getSecondaryTextColor());
 		}
-		this.mAccountJid.setAdapter(this.mKnownHostsAdapter);
+		this.mAccountJid.setAdapter(mKnownHostsAdapter);
 		updateSaveButton();
 	}
 
 	private void updateAccountInformation() {
-		this.mAccountJid.setText(this.mAccount.getJid());
+		this.mAccountJid.setText(this.mAccount.getJid().toString());
 		this.mPassword.setText(this.mAccount.getPassword());
 		if (this.jidToEdit != null) {
 			this.mAvatar.setVisibility(View.VISIBLE);
diff --git a/src/main/java/eu/siacs/conversations/ui/PublishProfilePictureActivity.java b/src/main/java/eu/siacs/conversations/ui/PublishProfilePictureActivity.java
index 6aa40c418..371102ef5 100644
--- a/src/main/java/eu/siacs/conversations/ui/PublishProfilePictureActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/PublishProfilePictureActivity.java
@@ -14,6 +14,8 @@ import android.widget.TextView;
 import eu.siacs.conversations.R;
 import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.utils.PhoneHelper;
+import eu.siacs.conversations.xmpp.jid.InvalidJidException;
+import eu.siacs.conversations.xmpp.jid.Jid;
 import eu.siacs.conversations.xmpp.pep.Avatar;
 
 public class PublishProfilePictureActivity extends XmppActivity {
@@ -148,8 +150,13 @@ public class PublishProfilePictureActivity extends XmppActivity {
 	@Override
 	protected void onBackendConnected() {
 		if (getIntent() != null) {
-			String jid = getIntent().getStringExtra("account");
-			if (jid != null) {
+            Jid jid;
+            try {
+                jid = Jid.fromString(getIntent().getStringExtra("account"));
+            } catch (InvalidJidException e) {
+                jid = null;
+            }
+            if (jid != null) {
 				this.account = xmppConnectionService.findAccountByJid(jid);
 				if (this.account.getXmppConnection() != null) {
 					this.support = this.account.getXmppConnection()
@@ -180,7 +187,7 @@ public class PublishProfilePictureActivity extends XmppActivity {
 				} else {
 					loadImageIntoPreview(avatarUri);
 				}
-				this.accountTextView.setText(this.account.getJid());
+				this.accountTextView.setText(this.account.getJid().toString());
 			}
 		}
 
diff --git a/src/main/java/eu/siacs/conversations/ui/XmppActivity.java b/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
index 052385f6b..d2cf582b7 100644
--- a/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/XmppActivity.java
@@ -65,6 +65,7 @@ import eu.siacs.conversations.services.AvatarService;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
 import eu.siacs.conversations.utils.ExceptionHelper;
+import eu.siacs.conversations.xmpp.jid.Jid;
 
 public abstract class XmppActivity extends Activity {
 
@@ -275,14 +276,14 @@ public abstract class XmppActivity extends Activity {
 	public void switchToContactDetails(Contact contact) {
 		Intent intent = new Intent(this, ContactDetailsActivity.class);
 		intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
-		intent.putExtra("account", contact.getAccount().getJid());
-		intent.putExtra("contact", contact.getJid());
+		intent.putExtra("account", contact.getAccount().getJid().toString());
+		intent.putExtra("contact", contact.getJid().toString());
 		startActivity(intent);
 	}
 
 	public void switchToAccount(Account account) {
 		Intent intent = new Intent(this, EditAccountActivity.class);
-		intent.putExtra("jid", account.getJid());
+		intent.putExtra("jid", account.getJid().toString());
 		startActivity(intent);
 	}
 
@@ -303,7 +304,7 @@ public abstract class XmppActivity extends Activity {
 						try {
 							startIntentSenderForResult(pi.getIntentSender(),
 									REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
-						} catch (SendIntentException e) {
+						} catch (final SendIntentException ignored) {
 						}
 					}
 
@@ -347,9 +348,9 @@ public abstract class XmppActivity extends Activity {
 	}
 
 	protected void showAddToRosterDialog(final Conversation conversation) {
-		String jid = conversation.getContactJid();
+		final Jid jid = conversation.getContactJid();
 		AlertDialog.Builder builder = new AlertDialog.Builder(this);
-		builder.setTitle(jid);
+		builder.setTitle(jid.toString());
 		builder.setMessage(getString(R.string.not_in_roster));
 		builder.setNegativeButton(getString(R.string.cancel), null);
 		builder.setPositiveButton(getString(R.string.add_contact),
@@ -357,7 +358,7 @@ public abstract class XmppActivity extends Activity {
 
 					@Override
 					public void onClick(DialogInterface dialog, int which) {
-						String jid = conversation.getContactJid();
+						final Jid jid = conversation.getContactJid();
 						Account account = conversation.getAccount();
 						Contact contact = account.getRoster().getContact(jid);
 						xmppConnectionService.createContact(contact);
@@ -369,7 +370,7 @@ public abstract class XmppActivity extends Activity {
 
 	private void showAskForPresenceDialog(final Contact contact) {
 		AlertDialog.Builder builder = new AlertDialog.Builder(this);
-		builder.setTitle(contact.getJid());
+		builder.setTitle(contact.getJid().toString());
 		builder.setMessage(R.string.request_presence_updates);
 		builder.setNegativeButton(R.string.cancel, null);
 		builder.setPositiveButton(R.string.request_now,
@@ -391,7 +392,7 @@ public abstract class XmppActivity extends Activity {
 	private void warnMutalPresenceSubscription(final Conversation conversation,
 											   final OnPresenceSelected listener) {
 		AlertDialog.Builder builder = new AlertDialog.Builder(this);
-		builder.setTitle(conversation.getContact().getJid());
+		builder.setTitle(conversation.getContact().getJid().toString());
 		builder.setMessage(R.string.without_mutual_presence_updates);
 		builder.setNegativeButton(R.string.cancel, null);
 		builder.setPositiveButton(R.string.ignore, new OnClickListener() {
@@ -567,11 +568,10 @@ public abstract class XmppActivity extends Activity {
 				nfcAdapter.setNdefPushMessageCallback(new NfcAdapter.CreateNdefMessageCallback() {
 					@Override
 					public NdefMessage createNdefMessage(NfcEvent nfcEvent) {
-						NdefMessage msg = new NdefMessage(new NdefRecord[]{
-								NdefRecord.createUri(getShareableUri()),
-								NdefRecord.createApplicationRecord("eu.siacs.conversations")
-						});
-						return msg;
+                        return new NdefMessage(new NdefRecord[]{
+                                NdefRecord.createUri(getShareableUri()),
+                                NdefRecord.createApplicationRecord("eu.siacs.conversations")
+                        });
 					}
 				}, this);
 			}
@@ -620,7 +620,7 @@ public abstract class XmppActivity extends Activity {
 	protected Bitmap createQrCodeBitmap(String input, int size) {
 		try {
 			final QRCodeWriter QR_CODE_WRITER = new QRCodeWriter();
-			final Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
+			final Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
 			hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
 			final BitMatrix result = QR_CODE_WRITER.encode(input, BarcodeFormat.QR_CODE, size, size, hints);
 			final int width = result.getWidth();
@@ -649,7 +649,7 @@ public abstract class XmppActivity extends Activity {
 		private Message message = null;
 
 		public BitmapWorkerTask(ImageView imageView) {
-			imageViewReference = new WeakReference<ImageView>(imageView);
+			imageViewReference = new WeakReference<>(imageView);
 		}
 
 		@Override
@@ -665,7 +665,7 @@ public abstract class XmppActivity extends Activity {
 
 		@Override
 		protected void onPostExecute(Bitmap bitmap) {
-			if (imageViewReference != null && bitmap != null) {
+			if (bitmap != null) {
 				final ImageView imageView = imageViewReference.get();
 				if (imageView != null) {
 					imageView.setImageBitmap(bitmap);
@@ -695,9 +695,8 @@ public abstract class XmppActivity extends Activity {
 				imageView.setImageDrawable(asyncDrawable);
 				try {
 					task.execute(message);
-				} catch (RejectedExecutionException e) {
-					return;
-				}
+				} catch (final RejectedExecutionException ignored) {
+                }
 			}
 		}
 	}
@@ -734,7 +733,7 @@ public abstract class XmppActivity extends Activity {
 		public AsyncDrawable(Resources res, Bitmap bitmap,
 							 BitmapWorkerTask bitmapWorkerTask) {
 			super(res, bitmap);
-			bitmapWorkerTaskReference = new WeakReference<BitmapWorkerTask>(
+			bitmapWorkerTaskReference = new WeakReference<>(
 					bitmapWorkerTask);
 		}
 
diff --git a/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java b/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
index 7a1e1f1b4..0afd91027 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/jid/Jid.java
@@ -162,6 +162,10 @@ public final class Jid {
         return result;
     }
 
+    public boolean hasLocalPart() {
+        return !localpart.isEmpty();
+    }
+
     public boolean isBareJid() {
         return this.resourcepart.isEmpty();
     }