Merge branch 'trz/rebase' into trz/rename

1 files changed, 538 insertions, 230 deletions

diff --git a/src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java b/src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java
index 94d1e2ea..1a4ccb8c 100644
--- a/src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java
+++ b/src/main/java/de/thedevstack/conversationsplus/ui/ConversationActivity.java
@@ -10,14 +10,21 @@ import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.content.Intent;
 import android.content.IntentSender.SendIntentException;
+import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.provider.MediaStore;
+import android.provider.Settings;
 import android.support.v4.widget.SlidingPaneLayout;
 import android.support.v4.widget.SlidingPaneLayout.PanelSlideListener;
+import android.util.Log;
+import android.util.Pair;
+import android.view.Gravity;
+import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.Surface;
 import android.view.View;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
@@ -29,22 +36,29 @@ import android.widget.Toast;
 
 import net.java.otr4j.session.SessionStatus;
 
-import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
-import de.thedevstack.conversationsplus.persistance.FileBackend;
-import de.thedevstack.conversationsplus.ui.dialogs.UserDecisionDialog;
-import de.thedevstack.conversationsplus.ui.listeners.ResizePictureUserDecisionListener;
-import de.timroes.android.listview.EnhancedListView;
+import org.openintents.openpgp.util.OpenPgpApi;
 
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
 
+import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
+import de.thedevstack.conversationsplus.ui.dialogs.UserDecisionDialog;
+import de.thedevstack.conversationsplus.ui.listeners.ResizePictureUserDecisionListener;
+import de.timroes.android.listview.EnhancedListView;
+import de.thedevstack.conversationsplus.Config;
 import de.thedevstack.conversationsplus.R;
+import de.thedevstack.conversationsplus.crypto.axolotl.AxolotlService;
+import de.thedevstack.conversationsplus.crypto.axolotl.AxolotlServiceImpl;
+import de.thedevstack.conversationsplus.crypto.axolotl.XmppAxolotlSession;
 import de.thedevstack.conversationsplus.entities.Account;
 import de.thedevstack.conversationsplus.entities.Blockable;
 import de.thedevstack.conversationsplus.entities.Contact;
 import de.thedevstack.conversationsplus.entities.Conversation;
 import de.thedevstack.conversationsplus.entities.Message;
+import de.thedevstack.conversationsplus.entities.Transferable;
+import de.thedevstack.conversationsplus.persistance.FileBackend;
 import de.thedevstack.conversationsplus.services.XmppConnectionService;
 import de.thedevstack.conversationsplus.services.XmppConnectionService.OnAccountUpdate;
 import de.thedevstack.conversationsplus.services.XmppConnectionService.OnConversationUpdate;
@@ -52,26 +66,33 @@ import de.thedevstack.conversationsplus.services.XmppConnectionService.OnRosterU
 import de.thedevstack.conversationsplus.ui.adapter.ConversationAdapter;
 import de.thedevstack.conversationsplus.utils.ExceptionHelper;
 import de.thedevstack.conversationsplus.xmpp.OnUpdateBlocklist;
+import de.thedevstack.conversationsplus.xmpp.jid.InvalidJidException;
+import de.thedevstack.conversationsplus.xmpp.jid.Jid;
 
 public class ConversationActivity extends XmppActivity
 	implements OnAccountUpdate, OnConversationUpdate, OnRosterUpdate, OnUpdateBlocklist, XmppConnectionService.OnShowErrorToast {
 
-	public static final String ACTION_DOWNLOAD = "de.thedevstack.conversationsplus.action.DOWNLOAD";
+	public static final String ACTION_DOWNLOAD = "eu.siacs.conversations.action.DOWNLOAD";
 
 	public static final String VIEW_CONVERSATION = "viewConversation";
 	public static final String CONVERSATION = "conversationUuid";
 	public static final String MESSAGE = "messageUuid";
 	public static final String TEXT = "text";
 	public static final String NICK = "nick";
+	public static final String PRIVATE_MESSAGE = "pm";
 
 	public static final int REQUEST_SEND_MESSAGE = 0x0201;
 	public static final int REQUEST_DECRYPT_PGP = 0x0202;
 	public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
+	public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
+	public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
+	public static final int REQUEST_START_DOWNLOAD = 0x0210;
 	public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 	public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 	public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 	public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 	public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
+	public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 	private static final String STATE_OPEN_CONVERSATION = "state_open_conversation";
 	private static final String STATE_PANEL_OPEN = "state_panel_open";
 	private static final String STATE_PENDING_URI = "state_pending_uri";
@@ -81,6 +102,10 @@ public class ConversationActivity extends XmppActivity
 	final private List<Uri> mPendingImageUris = new ArrayList<>();
 	final private List<Uri> mPendingFileUris = new ArrayList<>();
 	private Uri mPendingGeoUri = null;
+	private boolean forbidProcessingPendings = false;
+	private Message mPendingDownloadableMessage = null;
+
+	private boolean conversationWasSelectedByKeyboard = false;
 
 	private View mContentView;
 
@@ -92,10 +117,9 @@ public class ConversationActivity extends XmppActivity
 
 	private ArrayAdapter<Conversation> listAdapter;
 
-	private Toast prepareFileToast;
-
 	private boolean mActivityPaused = false;
-	private boolean mRedirected = true;
+	private AtomicBoolean mRedirected = new AtomicBoolean(false);
+	private Pair<Integer, Intent> mPostponedActivityResult;
 
 	public Conversation getSelectedConversation() {
 		return this.mSelectedConversation;
@@ -131,8 +155,7 @@ public class ConversationActivity extends XmppActivity
 
 	public boolean isConversationsOverviewHideable() {
 		if (mContentView instanceof SlidingPaneLayout) {
-			SlidingPaneLayout mSlidingPaneLayout = (SlidingPaneLayout) mContentView;
-			return mSlidingPaneLayout.isSlideable();
+			return true;
 		} else {
 			return false;
 		}
@@ -180,10 +203,11 @@ public class ConversationActivity extends XmppActivity
 
 			@Override
 			public void onItemClick(AdapterView<?> arg0, View clickedView,
-					int position, long arg3) {
+									int position, long arg3) {
 				if (getSelectedConversation() != conversationList.get(position)) {
 					setSelectedConversation(conversationList.get(position));
 					ConversationActivity.this.mConversationFragment.reInit(getSelectedConversation());
+					conversationWasSelectedByKeyboard = false;
 				}
 				hideConversationsOverview();
 				openConversation();
@@ -192,64 +216,67 @@ public class ConversationActivity extends XmppActivity
 
 		listView.setDismissCallback(new EnhancedListView.OnDismissCallback() {
 
-            @Override
-            public EnhancedListView.Undoable onDismiss(final EnhancedListView enhancedListView, final int position) {
-
-                final int index = listView.getFirstVisiblePosition();
-                View v = listView.getChildAt(0);
-                final int top = (v == null) ? 0 : (v.getTop() - listView.getPaddingTop());
-
-                swipedConversation = listAdapter.getItem(position);
-                listAdapter.remove(swipedConversation);
-                swipedConversation.markRead();
-                xmppConnectionService.getNotificationService().clear(swipedConversation);
-
-                final boolean formerlySelected = (getSelectedConversation() == swipedConversation);
-                if (position == 0 && listAdapter.getCount() == 0) {
-                    endConversation(swipedConversation, false, true);
-                    return null;
-                } else if (formerlySelected) {
-                    setSelectedConversation(listAdapter.getItem(0));
-                    ConversationActivity.this.mConversationFragment
-                            .reInit(getSelectedConversation());
-                }
+			@Override
+			public EnhancedListView.Undoable onDismiss(final EnhancedListView enhancedListView, final int position) {
 
-                return new EnhancedListView.Undoable() {
+				final int index = listView.getFirstVisiblePosition();
+				View v = listView.getChildAt(0);
+				final int top = (v == null) ? 0 : (v.getTop() - listView.getPaddingTop());
 
-                    @Override
-                    public void undo() {
-                        listAdapter.insert(swipedConversation, position);
-                        if (formerlySelected) {
-                            setSelectedConversation(swipedConversation);
-                            ConversationActivity.this.mConversationFragment
-                                    .reInit(getSelectedConversation());
-                        }
-                        swipedConversation = null;
-                        listView.setSelectionFromTop(index + (listView.getChildCount() < position ? 1 : 0), top);
-                    }
+				try {
+					swipedConversation = listAdapter.getItem(position);
+				} catch (IndexOutOfBoundsException e) {
+					return null;
+				}
+				listAdapter.remove(swipedConversation);
+				xmppConnectionService.markRead(swipedConversation);
+
+				final boolean formerlySelected = (getSelectedConversation() == swipedConversation);
+				if (position == 0 && listAdapter.getCount() == 0) {
+					endConversation(swipedConversation, false, true);
+					return null;
+				} else if (formerlySelected) {
+					setSelectedConversation(listAdapter.getItem(0));
+					ConversationActivity.this.mConversationFragment
+							.reInit(getSelectedConversation());
+				}
 
-                    @Override
-                    public void discard() {
-                        if (!swipedConversation.isRead()
-                                && swipedConversation.getMode() == Conversation.MODE_SINGLE) {
-                            swipedConversation = null;
-                            return;
-                        }
-                        endConversation(swipedConversation, false, false);
-                        swipedConversation = null;
-                    }
+				return new EnhancedListView.Undoable() {
 
-                    @Override
-                    public String getTitle() {
-                        if (swipedConversation.getMode() == Conversation.MODE_MULTI) {
-                            return getResources().getString(R.string.title_undo_swipe_out_muc);
-                        } else {
-                            return getResources().getString(R.string.title_undo_swipe_out_conversation);
-                        }
-                    }
-                };
-            }
-        });
+					@Override
+					public void undo() {
+						listAdapter.insert(swipedConversation, position);
+						if (formerlySelected) {
+							setSelectedConversation(swipedConversation);
+							ConversationActivity.this.mConversationFragment
+									.reInit(getSelectedConversation());
+						}
+						swipedConversation = null;
+						listView.setSelectionFromTop(index + (listView.getChildCount() < position ? 1 : 0), top);
+					}
+
+					@Override
+					public void discard() {
+						if (!swipedConversation.isRead()
+								&& swipedConversation.getMode() == Conversation.MODE_SINGLE) {
+							swipedConversation = null;
+							return;
+						}
+						endConversation(swipedConversation, false, false);
+						swipedConversation = null;
+					}
+
+					@Override
+					public String getTitle() {
+						if (swipedConversation.getMode() == Conversation.MODE_MULTI) {
+							return getResources().getString(R.string.title_undo_swipe_out_muc);
+						} else {
+							return getResources().getString(R.string.title_undo_swipe_out_conversation);
+						}
+					}
+				};
+			}
+		});
 		listView.enableSwipeToDismiss();
         listView.setSwipeDirection(EnhancedListView.SwipeDirection.START);
 		listView.setSwipingLayout(R.id.swipeable_item);
@@ -277,7 +304,7 @@ public class ConversationActivity extends XmppActivity
 					hideKeyboard();
 					if (xmppConnectionServiceBound) {
 						xmppConnectionService.getNotificationService()
-							.setOpenConversation(null);
+								.setOpenConversation(null);
 					}
 					closeContextMenu();
 				}
@@ -301,12 +328,12 @@ public class ConversationActivity extends XmppActivity
 	public void switchToConversation(Conversation conversation) {
 		setSelectedConversation(conversation);
 		runOnUiThread(new Runnable() {
-            @Override
-            public void run() {
-                ConversationActivity.this.mConversationFragment.reInit(getSelectedConversation());
-                openConversation();
-            }
-        });
+			@Override
+			public void run() {
+				ConversationActivity.this.mConversationFragment.reInit(getSelectedConversation());
+				openConversation();
+			}
+		});
 	}
 
 	private void updateActionBarTitle() {
@@ -346,11 +373,7 @@ public class ConversationActivity extends XmppActivity
 
 	public void sendReadMarkerIfNecessary(final Conversation conversation) {
 		if (!mActivityPaused && conversation != null) {
-			if (!conversation.isRead()) {
-				xmppConnectionService.sendReadMarker(conversation);
-			} else {
-				xmppConnectionService.markRead(conversation);
-			}
+			xmppConnectionService.sendReadMarker(conversation);
 		}
 	}
 
@@ -381,7 +404,7 @@ public class ConversationActivity extends XmppActivity
 		} else {
 			menuAdd.setVisible(!isConversationsOverviewHideable());
 			if (this.getSelectedConversation() != null) {
-				if (this.getSelectedConversation().getNextEncryption(ConversationsPlusPreferences.forceEncryption()) != Message.ENCRYPTION_NONE) {
+				if (this.getSelectedConversation().getNextEncryption() != Message.ENCRYPTION_NONE) {
 					if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
 						menuSecure.setIcon(R.drawable.ic_lock_white_24dp);
 					} else {
@@ -390,10 +413,12 @@ public class ConversationActivity extends XmppActivity
 				}
 				if (this.getSelectedConversation().getMode() == Conversation.MODE_MULTI) {
 					menuContactDetails.setVisible(false);
-					menuAttach.setVisible(getSelectedConversation().getAccount().httpUploadAvailable());
+					menuAttach.setVisible(getSelectedConversation().getAccount().httpUploadAvailable() && getSelectedConversation().getMucOptions().participating());
 					menuInviteContact.setVisible(getSelectedConversation().getMucOptions().canInvite());
+					menuSecure.setVisible(Config.supportOpenPgp() && Config.multipleEncryptionChoices()); //only if pgp is supported we have a choice
 				} else {
 					menuMucDetails.setVisible(false);
+					menuSecure.setVisible(Config.multipleEncryptionChoices());
 				}
 				if (this.getSelectedConversation().isMuted()) {
 					menuMute.setVisible(false);
@@ -405,7 +430,7 @@ public class ConversationActivity extends XmppActivity
 		return true;
 	}
 
-	private void selectPresenceToAttachFile(final int attachmentChoice, final int encryption) {
+	protected void selectPresenceToAttachFile(final int attachmentChoice, final int encryption) {
 		final Conversation conversation = getSelectedConversation();
 		final Account account = conversation.getAccount();
 		final OnPresenceSelected callback = new OnPresenceSelected() {
@@ -419,7 +444,7 @@ public class ConversationActivity extends XmppActivity
 					case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 						intent.setAction(Intent.ACTION_GET_CONTENT);
 						if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
-							intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE,true);
+							intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
 						}
 						intent.setType("image/*");
 						chooser = true;
@@ -439,11 +464,11 @@ public class ConversationActivity extends XmppActivity
 						break;
 					case ATTACHMENT_CHOICE_RECORD_VOICE:
 						intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
-						fallbackPackageId = "de.thedevstack.conversationsplus.voicerecorder";
+						fallbackPackageId = "eu.siacs.conversations.voicerecorder";
 						break;
 					case ATTACHMENT_CHOICE_LOCATION:
-						intent.setAction("de.thedevstack.conversationsplus.location.request");
-						fallbackPackageId = "de.thedevstack.conversationsplus.sharelocation";
+						intent.setAction("eu.siacs.conversations.location.request");
+						fallbackPackageId = "eu.siacs.conversations.sharelocation";
 						break;
 				}
 				if (intent.resolveActivity(getPackageManager()) != null) {
@@ -469,7 +494,7 @@ public class ConversationActivity extends XmppActivity
 
 	private Intent getInstallApkIntent(final String packageId) {
 		Intent intent = new Intent(Intent.ACTION_VIEW);
-		intent.setData(Uri.parse("market://details?id="+packageId));
+		intent.setData(Uri.parse("market://details?id=" + packageId));
 		if (intent.resolveActivity(getPackageManager()) != null) {
 			return intent;
 		} else {
@@ -479,6 +504,11 @@ public class ConversationActivity extends XmppActivity
 	}
 
 	public void attachFile(final int attachmentChoice) {
+		if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
+			if (!hasStoragePermission(attachmentChoice)) {
+				return;
+			}
+		}
 		switch (attachmentChoice) {
 			case ATTACHMENT_CHOICE_LOCATION:
 				ConversationsPlusPreferences.applyRecentlyUsedQuickAction("location");
@@ -494,23 +524,23 @@ public class ConversationActivity extends XmppActivity
 				break;
 		}
 		final Conversation conversation = getSelectedConversation();
-		final int encryption = conversation.getNextEncryption(ConversationsPlusPreferences.forceEncryption());
+		final int encryption = conversation.getNextEncryption();
+		final int mode = conversation.getMode();
 		if (encryption == Message.ENCRYPTION_PGP) {
 			if (hasPgp()) {
-				if (conversation.getContact().getPgpKeyId() != 0) {
+				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
 					xmppConnectionService.getPgpEngine().hasKey(
 							conversation.getContact(),
 							new UiCallback<Contact>() {
 
 								@Override
-								public void userInputRequried(PendingIntent pi,
-										Contact contact) {
-									ConversationActivity.this.runIntent(pi,attachmentChoice);
+								public void userInputRequried(PendingIntent pi, Contact contact) {
+									ConversationActivity.this.runIntent(pi, attachmentChoice);
 								}
 
 								@Override
 								public void success(Contact contact) {
-									selectPresenceToAttachFile(attachmentChoice,encryption);
+									selectPresenceToAttachFile(attachmentChoice, encryption);
 								}
 
 								@Override
@@ -518,21 +548,31 @@ public class ConversationActivity extends XmppActivity
 									displayErrorDialog(error);
 								}
 							});
+				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
+					if (!conversation.getMucOptions().everybodyHasKeys()) {
+						Toast warning = Toast
+								.makeText(this,
+										R.string.missing_public_keys,
+										Toast.LENGTH_LONG);
+						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
+						warning.show();
+					}
+					selectPresenceToAttachFile(attachmentChoice, encryption);
 				} else {
 					final ConversationFragment fragment = (ConversationFragment) getFragmentManager()
-						.findFragmentByTag("conversation");
+							.findFragmentByTag("conversation");
 					if (fragment != null) {
 						fragment.showNoPGPKeyDialog(false,
 								new OnClickListener() {
 
 									@Override
 									public void onClick(DialogInterface dialog,
-											int which) {
+														int which) {
 										conversation
-											.setNextEncryption(Message.ENCRYPTION_NONE);
+												.setNextEncryption(Message.ENCRYPTION_NONE);
 										xmppConnectionService.databaseBackend
-											.updateConversation(conversation);
-										selectPresenceToAttachFile(attachmentChoice,Message.ENCRYPTION_NONE);
+												.updateConversation(conversation);
+										selectPresenceToAttachFile(attachmentChoice, Message.ENCRYPTION_NONE);
 									}
 								});
 					}
@@ -541,7 +581,40 @@ public class ConversationActivity extends XmppActivity
 				showInstallPgpDialog();
 			}
 		} else {
-			selectPresenceToAttachFile(attachmentChoice, encryption);
+			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
+				selectPresenceToAttachFile(attachmentChoice, encryption);
+			}
+		}
+	}
+
+	@Override
+	public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
+		if (grantResults.length > 0)
+			if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+				if (requestCode == REQUEST_START_DOWNLOAD) {
+					if (this.mPendingDownloadableMessage != null) {
+						startDownloadable(this.mPendingDownloadableMessage);
+					}
+				} else {
+					attachFile(requestCode);
+				}
+			} else {
+				Toast.makeText(this, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
+			}
+	}
+
+	public void startDownloadable(Message message) {
+		if (!hasStoragePermission(ConversationActivity.REQUEST_START_DOWNLOAD)) {
+			this.mPendingDownloadableMessage = message;
+			return;
+		}
+		Transferable transferable = message.getTransferable();
+		if (transferable != null) {
+			if (!transferable.start()) {
+				Toast.makeText(this, R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
+			}
+		} else if (message.treatAsDownloadable() != Message.Decision.NEVER) {
+			xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
 		}
 	}
 
@@ -616,6 +689,12 @@ public class ConversationActivity extends XmppActivity
 				this.mConversationFragment.reInit(getSelectedConversation());
 			} else {
 				setSelectedConversation(null);
+				if (mRedirected.compareAndSet(false, true)) {
+					Intent intent = new Intent(this, StartConversationActivity.class);
+					intent.putExtra("init", true);
+					startActivity(intent);
+					finish();
+				}
 			}
 		}
 	}
@@ -627,23 +706,23 @@ public class ConversationActivity extends XmppActivity
 		View dialogView = getLayoutInflater().inflate(
 				R.layout.dialog_clear_history, null);
 		final CheckBox endConversationCheckBox = (CheckBox) dialogView
-			.findViewById(R.id.end_conversation_checkbox);
+				.findViewById(R.id.end_conversation_checkbox);
 		builder.setView(dialogView);
 		builder.setNegativeButton(getString(R.string.cancel), null);
 		builder.setPositiveButton(getString(R.string.delete_messages),
-                new OnClickListener() {
+				new OnClickListener() {
 
-                    @Override
-                    public void onClick(DialogInterface dialog, int which) {
-                        ConversationActivity.this.xmppConnectionService.clearConversationHistory(conversation);
-                        if (endConversationCheckBox.isChecked()) {
-                            endConversation(conversation);
-                        } else {
-                            updateConversationList();
-                            ConversationActivity.this.mConversationFragment.updateMessages();
-                        }
-                    }
-                });
+					@Override
+					public void onClick(DialogInterface dialog, int which) {
+						ConversationActivity.this.xmppConnectionService.clearConversationHistory(conversation);
+						if (endConversationCheckBox.isChecked()) {
+							endConversation(conversation);
+						} else {
+							updateConversationList();
+							ConversationActivity.this.mConversationFragment.updateMessages();
+						}
+					}
+				});
 		builder.create().show();
 	}
 
@@ -657,7 +736,7 @@ public class ConversationActivity extends XmppActivity
 		if (new Intent(MediaStore.Audio.Media.RECORD_SOUND_ACTION).resolveActivity(getPackageManager()) == null) {
 			attachFilePopup.getMenu().findItem(R.id.attach_record_voice).setVisible(false);
 		}
-		if (new Intent("de.thedevstack.conversationsplus.location.request").resolveActivity(getPackageManager()) == null) {
+		if (new Intent("eu.siacs.conversations.location.request").resolveActivity(getPackageManager()) == null) {
 			attachFilePopup.getMenu().findItem(R.id.attach_location).setVisible(false);
 		}
 		attachFilePopup.setOnMenuItemClickListener(new OnMenuItemClickListener() {
@@ -703,7 +782,7 @@ public class ConversationActivity extends XmppActivity
 				Intent intent = new Intent(ConversationActivity.this, VerifyOTRActivity.class);
 				intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
 				intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
-				intent.putExtra("account", conversation.getAccount().getJid().toBareJid().toString());
+				intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 				switch (menuItem.getItemId()) {
 					case R.id.scan_fingerprint:
 						intent.putExtra("mode", VerifyOTRActivity.MODE_SCAN_FINGERPRINT);
@@ -729,7 +808,7 @@ public class ConversationActivity extends XmppActivity
 		}
 		PopupMenu popup = new PopupMenu(this, menuItemView);
 		final ConversationFragment fragment = (ConversationFragment) getFragmentManager()
-			.findFragmentByTag("conversation");
+				.findFragmentByTag("conversation");
 		if (fragment != null) {
 			popup.setOnMenuItemClickListener(new OnMenuItemClickListener() {
 
@@ -746,16 +825,22 @@ public class ConversationActivity extends XmppActivity
 							break;
 						case R.id.encryption_choice_pgp:
 							if (hasPgp()) {
-								if (conversation.getAccount().getKeys().has("pgp_signature")) {
+								if (conversation.getAccount().getPgpSignature() != null) {
 									conversation.setNextEncryption(Message.ENCRYPTION_PGP);
 									item.setChecked(true);
 								} else {
-									announcePgp(conversation.getAccount(),conversation);
+									announcePgp(conversation.getAccount(), conversation);
 								}
 							} else {
 								showInstallPgpDialog();
 							}
 							break;
+						case R.id.encryption_choice_axolotl:
+							Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(conversation.getAccount())
+									+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
+							conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
+							item.setChecked(true);
+							break;
 						default:
 							conversation.setNextEncryption(Message.ENCRYPTION_NONE);
 							break;
@@ -763,6 +848,7 @@ public class ConversationActivity extends XmppActivity
 					xmppConnectionService.databaseBackend.updateConversation(conversation);
 					fragment.updateChatMsgHint();
 					invalidateOptionsMenu();
+					refreshUi();
 					return true;
 				}
 			});
@@ -770,15 +856,18 @@ public class ConversationActivity extends XmppActivity
 			MenuItem otr = popup.getMenu().findItem(R.id.encryption_choice_otr);
 			MenuItem none = popup.getMenu().findItem(R.id.encryption_choice_none);
 			MenuItem pgp = popup.getMenu().findItem(R.id.encryption_choice_pgp);
-			boolean forceEncryption = ConversationsPlusPreferences.forceEncryption();
+			MenuItem axolotl = popup.getMenu().findItem(R.id.encryption_choice_axolotl);
+			pgp.setVisible(Config.supportOpenPgp());
+			none.setVisible(Config.supportUnencrypted() || conversation.getMode() == Conversation.MODE_MULTI);
+			otr.setVisible(Config.supportOtr());
+			axolotl.setVisible(Config.supportOmemo());
 			if (conversation.getMode() == Conversation.MODE_MULTI) {
-				otr.setEnabled(false);
-			} else {
-				if (forceEncryption) {
-					none.setVisible(false);
-				}
+				otr.setVisible(false);
+				axolotl.setVisible(false);
+			} else if (!conversation.getAccount().getAxolotlService().isContactAxolotlCapable(conversation.getContact())) {
+				axolotl.setEnabled(false);
 			}
-			switch (conversation.getNextEncryption(forceEncryption)) {
+			switch (conversation.getNextEncryption()) {
 				case Message.ENCRYPTION_NONE:
 					none.setChecked(true);
 					break;
@@ -788,6 +877,9 @@ public class ConversationActivity extends XmppActivity
 				case Message.ENCRYPTION_PGP:
 					pgp.setChecked(true);
 					break;
+				case Message.ENCRYPTION_AXOLOTL:
+					axolotl.setChecked(true);
+					break;
 				default:
 					none.setChecked(true);
 					break;
@@ -799,27 +891,26 @@ public class ConversationActivity extends XmppActivity
 	protected void muteConversationDialog(final Conversation conversation) {
 		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 		builder.setTitle(R.string.disable_notifications);
-		final int[] durations = getResources().getIntArray(
-				R.array.mute_options_durations);
+		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
 		builder.setItems(R.array.mute_options_descriptions,
-                new OnClickListener() {
+				new OnClickListener() {
 
-                    @Override
-                    public void onClick(final DialogInterface dialog, final int which) {
-                        final long till;
-                        if (durations[which] == -1) {
-                            till = Long.MAX_VALUE;
-                        } else {
-                            till = System.currentTimeMillis() + (durations[which] * 1000);
-                        }
-                        conversation.setMutedTill(till);
-                        ConversationActivity.this.xmppConnectionService.databaseBackend
-                                .updateConversation(conversation);
-                        updateConversationList();
-                        ConversationActivity.this.mConversationFragment.updateMessages();
-                        invalidateOptionsMenu();
-                    }
-                });
+					@Override
+					public void onClick(final DialogInterface dialog, final int which) {
+						final long till;
+						if (durations[which] == -1) {
+							till = Long.MAX_VALUE;
+						} else {
+							till = System.currentTimeMillis() + (durations[which] * 1000);
+						}
+						conversation.setMutedTill(till);
+						ConversationActivity.this.xmppConnectionService.databaseBackend
+								.updateConversation(conversation);
+						updateConversationList();
+						ConversationActivity.this.mConversationFragment.updateMessages();
+						invalidateOptionsMenu();
+					}
+				});
 		builder.create().show();
 	}
 
@@ -841,10 +932,119 @@ public class ConversationActivity extends XmppActivity
 	}
 
 	@Override
+	public boolean onKeyUp(int key, KeyEvent event) {
+		int rotation = getWindowManager().getDefaultDisplay().getRotation();
+		final int upKey;
+		final int downKey;
+		switch (rotation) {
+			case Surface.ROTATION_90:
+				upKey = KeyEvent.KEYCODE_DPAD_LEFT;
+				downKey = KeyEvent.KEYCODE_DPAD_RIGHT;
+				break;
+			case Surface.ROTATION_180:
+				upKey = KeyEvent.KEYCODE_DPAD_DOWN;
+				downKey = KeyEvent.KEYCODE_DPAD_UP;
+				break;
+			case Surface.ROTATION_270:
+				upKey = KeyEvent.KEYCODE_DPAD_RIGHT;
+				downKey = KeyEvent.KEYCODE_DPAD_LEFT;
+				break;
+			default:
+				upKey = KeyEvent.KEYCODE_DPAD_UP;
+				downKey = KeyEvent.KEYCODE_DPAD_DOWN;
+		}
+		final boolean modifier = event.isCtrlPressed() || event.isAltPressed();
+		if (modifier && key == KeyEvent.KEYCODE_TAB && isConversationsOverviewHideable()) {
+			toggleConversationsOverview();
+			return true;
+		} else if (modifier && key == downKey) {
+			if (isConversationsOverviewHideable() && !isConversationsOverviewVisable()) {
+				showConversationsOverview();
+				;
+			}
+			return selectDownConversation();
+		} else if (modifier && key == upKey) {
+			if (isConversationsOverviewHideable() && !isConversationsOverviewVisable()) {
+				showConversationsOverview();
+			}
+			return selectUpConversation();
+		} else if (modifier && key == KeyEvent.KEYCODE_1) {
+			return openConversationByIndex(0);
+		} else if (modifier && key == KeyEvent.KEYCODE_2) {
+			return openConversationByIndex(1);
+		} else if (modifier && key == KeyEvent.KEYCODE_3) {
+			return openConversationByIndex(2);
+		} else if (modifier && key == KeyEvent.KEYCODE_4) {
+			return openConversationByIndex(3);
+		} else if (modifier && key == KeyEvent.KEYCODE_5) {
+			return openConversationByIndex(4);
+		} else if (modifier && key == KeyEvent.KEYCODE_6) {
+			return openConversationByIndex(5);
+		} else if (modifier && key == KeyEvent.KEYCODE_7) {
+			return openConversationByIndex(6);
+		} else if (modifier && key == KeyEvent.KEYCODE_8) {
+			return openConversationByIndex(7);
+		} else if (modifier && key == KeyEvent.KEYCODE_9) {
+			return openConversationByIndex(8);
+		} else if (modifier && key == KeyEvent.KEYCODE_0) {
+			return openConversationByIndex(9);
+		} else {
+			return super.onKeyUp(key, event);
+		}
+	}
+
+	private void toggleConversationsOverview() {
+		if (isConversationsOverviewVisable()) {
+			hideConversationsOverview();
+			if (mConversationFragment != null) {
+				mConversationFragment.setFocusOnInputField();
+			}
+		} else {
+			showConversationsOverview();
+		}
+	}
+
+	private boolean selectUpConversation() {
+		if (this.mSelectedConversation != null) {
+			int index = this.conversationList.indexOf(this.mSelectedConversation);
+			if (index > 0) {
+				return openConversationByIndex(index - 1);
+			}
+		}
+		return false;
+	}
+
+	private boolean selectDownConversation() {
+		if (this.mSelectedConversation != null) {
+			int index = this.conversationList.indexOf(this.mSelectedConversation);
+			if (index != -1 && index < this.conversationList.size() - 1) {
+				return openConversationByIndex(index + 1);
+			}
+		}
+		return false;
+	}
+
+	private boolean openConversationByIndex(int index) {
+		try {
+			this.conversationWasSelectedByKeyboard = true;
+			setSelectedConversation(this.conversationList.get(index));
+			this.mConversationFragment.reInit(getSelectedConversation());
+			if (index > listView.getLastVisiblePosition() - 1 || index < listView.getFirstVisiblePosition() + 1) {
+				this.listView.setSelection(index);
+			}
+			openConversation();
+			return true;
+		} catch (IndexOutOfBoundsException e) {
+			return false;
+		}
+	}
+
+	@Override
 	protected void onNewIntent(final Intent intent) {
 		if (xmppConnectionServiceBound) {
 			if (intent != null && VIEW_CONVERSATION.equals(intent.getType())) {
 				handleViewConversationIntent(intent);
+				setIntent(new Intent());
 			}
 		} else {
 			setIntent(intent);
@@ -854,7 +1054,7 @@ public class ConversationActivity extends XmppActivity
 	@Override
 	public void onStart() {
 		super.onStart();
-		this.mRedirected = false;
+		this.mRedirected.set(false);
 		if (this.xmppConnectionServiceBound) {
 			this.onBackendConnected();
 		}
@@ -896,17 +1096,26 @@ public class ConversationActivity extends XmppActivity
 	public void onSaveInstanceState(final Bundle savedInstanceState) {
 		Conversation conversation = getSelectedConversation();
 		if (conversation != null) {
-			savedInstanceState.putString(STATE_OPEN_CONVERSATION,
-					conversation.getUuid());
+			savedInstanceState.putString(STATE_OPEN_CONVERSATION, conversation.getUuid());
+		} else {
+			savedInstanceState.remove(STATE_OPEN_CONVERSATION);
 		}
-		savedInstanceState.putBoolean(STATE_PANEL_OPEN,
-                isConversationsOverviewVisable());
+		savedInstanceState.putBoolean(STATE_PANEL_OPEN, isConversationsOverviewVisable());
 		if (this.mPendingImageUris.size() >= 1) {
 			savedInstanceState.putString(STATE_PENDING_URI, this.mPendingImageUris.get(0).toString());
+		} else {
+			savedInstanceState.remove(STATE_PENDING_URI);
 		}
 		super.onSaveInstanceState(savedInstanceState);
 	}
 
+	private void clearPending() {
+		mPendingImageUris.clear();
+		mPendingFileUris.clear();
+		mPendingGeoUri = null;
+		mPostponedActivityResult = null;
+	}
+
 	@Override
 	void onBackendConnected() {
 		this.xmppConnectionService.getNotificationService().setIsInForeground(true);
@@ -918,20 +1127,23 @@ public class ConversationActivity extends XmppActivity
 		}
 
 		if (xmppConnectionService.getAccounts().size() == 0) {
-			if (!mRedirected) {
-				this.mRedirected = true;
-				startActivity(new Intent(this, EditAccountActivity.class));
+			if (mRedirected.compareAndSet(false, true)) {
+				if (Config.X509_VERIFICATION) {
+					startActivity(new Intent(this, ManageAccountActivity.class));
+				} else {
+					startActivity(new Intent(this, EditAccountActivity.class));
+				}
 				finish();
 			}
 		} else if (conversationList.size() <= 0) {
-			if (!mRedirected) {
-				this.mRedirected = true;
+			if (mRedirected.compareAndSet(false, true)) {
 				Intent intent = new Intent(this, StartConversationActivity.class);
-				intent.putExtra("init",true);
+				intent.putExtra("init", true);
 				startActivity(intent);
 				finish();
 			}
 		} else if (getIntent() != null && VIEW_CONVERSATION.equals(getIntent().getType())) {
+			clearPending();
 			handleViewConversationIntent(getIntent());
 		} else if (selectConversationByUuid(mOpenConverstaion)) {
 			if (mPanelOpen) {
@@ -939,32 +1151,45 @@ public class ConversationActivity extends XmppActivity
 			} else {
 				if (isConversationsOverviewHideable()) {
 					openConversation();
+					updateActionBarTitle(true);
 				}
 			}
 			this.mConversationFragment.reInit(getSelectedConversation());
 			mOpenConverstaion = null;
 		} else if (getSelectedConversation() == null) {
 			showConversationsOverview();
-			mPendingImageUris.clear();
-			mPendingFileUris.clear();
-			mPendingGeoUri = null;
+			clearPending();
 			setSelectedConversation(conversationList.get(0));
 			this.mConversationFragment.reInit(getSelectedConversation());
+		} else {
+			this.mConversationFragment.messagesView.invalidateViews();
+			this.mConversationFragment.setupIme();
 		}
 
-		for(Iterator<Uri> i = mPendingImageUris.iterator(); i.hasNext(); i.remove()) {
-			attachImageToConversation(getSelectedConversation(),i.next());
+		if (this.mPostponedActivityResult != null) {
+			this.onActivityResult(mPostponedActivityResult.first, RESULT_OK, mPostponedActivityResult.second);
 		}
 
-		for(Iterator<Uri> i = mPendingFileUris.iterator(); i.hasNext(); i.remove()) {
-			attachFileToConversation(getSelectedConversation(),i.next());
+		if (!forbidProcessingPendings) {
+			for (Iterator<Uri> i = mPendingImageUris.iterator(); i.hasNext(); i.remove()) {
+				Uri foo = i.next();
+				attachImageToConversation(getSelectedConversation(), foo);
+			}
+
+			for (Iterator<Uri> i = mPendingFileUris.iterator(); i.hasNext(); i.remove()) {
+				attachFileToConversation(getSelectedConversation(), i.next());
+			}
+
+			if (mPendingGeoUri != null) {
+				attachLocationToConversation(getSelectedConversation(), mPendingGeoUri);
+				mPendingGeoUri = null;
+			}
 		}
+		forbidProcessingPendings = false;
 
-		if (mPendingGeoUri != null) {
-			attachLocationToConversation(getSelectedConversation(), mPendingGeoUri);
-			mPendingGeoUri = null;
+		if (!ExceptionHelper.checkForCrash(this, this.xmppConnectionService)) {
+			openBatteryOptimizationDialogIfNeeded();
 		}
-		ExceptionHelper.checkForCrash(this, this.xmppConnectionService);
 		setIntent(new Intent());
 	}
 
@@ -973,10 +1198,21 @@ public class ConversationActivity extends XmppActivity
 		final String downloadUuid = intent.getStringExtra(MESSAGE);
 		final String text = intent.getStringExtra(TEXT);
 		final String nick = intent.getStringExtra(NICK);
+		final boolean pm = intent.getBooleanExtra(PRIVATE_MESSAGE, false);
 		if (selectConversationByUuid(uuid)) {
 			this.mConversationFragment.reInit(getSelectedConversation());
 			if (nick != null) {
-				this.mConversationFragment.highlightInConference(nick);
+				if (pm) {
+					Jid jid = getSelectedConversation().getJid();
+					try {
+						Jid next = Jid.fromParts(jid.getLocalpart(), jid.getDomainpart(), nick);
+						this.mConversationFragment.privateMessageWith(next);
+					} catch (final InvalidJidException ignored) {
+						//do nothing
+					}
+				} else {
+					this.mConversationFragment.highlightInConference(nick);
+				}
 			} else {
 				this.mConversationFragment.appendText(text);
 			}
@@ -988,7 +1224,7 @@ public class ConversationActivity extends XmppActivity
 			if (downloadUuid != null) {
 				final Message message = mSelectedConversation.findMessageWithFileAndUuid(downloadUuid);
 				if (message != null) {
-					mConversationFragment.messageListAdapter.startDownloadable(message);
+					startDownloadable(message);
 				}
 			}
 		}
@@ -1016,10 +1252,13 @@ public class ConversationActivity extends XmppActivity
 	@SuppressLint("NewApi")
 	private static List<Uri> extractUriFromIntent(final Intent intent) {
 		List<Uri> uris = new ArrayList<>();
+		if (intent == null) {
+			return uris;
+		}
 		Uri uri = intent.getData();
 		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2 && uri == null) {
 			ClipData clipData = intent.getClipData();
-			for(int i = 0; i < clipData.getItemCount(); ++i) {
+			for (int i = 0; i < clipData.getItemCount(); ++i) {
 				uris.add(clipData.getItemAt(i).getUri());
 			}
 		} else {
@@ -1029,26 +1268,46 @@ public class ConversationActivity extends XmppActivity
 	}
 
 	@Override
-	protected void onActivityResult(int requestCode, int resultCode,
-			final Intent data) {
+	protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
 		super.onActivityResult(requestCode, resultCode, data);
 		if (resultCode == RESULT_OK) {
 			if (requestCode == REQUEST_DECRYPT_PGP) {
-				mConversationFragment.hideSnackbar();
-				mConversationFragment.updateMessages();
+				mConversationFragment.onActivityResult(requestCode, resultCode, data);
+			} else if (requestCode == REQUEST_CHOOSE_PGP_ID) {
+				// the user chose OpenPGP for encryption and selected his key in the PGP provider
+				if (xmppConnectionServiceBound) {
+					if (data.getExtras().containsKey(OpenPgpApi.EXTRA_SIGN_KEY_ID)) {
+						// associate selected PGP keyId with the account
+						mSelectedConversation.getAccount().setPgpSignId(data.getExtras().getLong(OpenPgpApi.EXTRA_SIGN_KEY_ID));
+						// we need to announce the key as described in XEP-027
+						announcePgp(mSelectedConversation.getAccount(), null);
+					} else {
+						choosePgpSignId(mSelectedConversation.getAccount());
+					}
+					this.mPostponedActivityResult = null;
+				} else {
+					this.mPostponedActivityResult = new Pair<>(requestCode, data);
+				}
+			} else if (requestCode == REQUEST_ANNOUNCE_PGP) {
+				if (xmppConnectionServiceBound) {
+					announcePgp(mSelectedConversation.getAccount(), mSelectedConversation);
+					this.mPostponedActivityResult = null;
+				} else {
+					this.mPostponedActivityResult = new Pair<>(requestCode, data);
+				}
 			} else if (requestCode == ATTACHMENT_CHOICE_CHOOSE_IMAGE) {
 				mPendingImageUris.clear();
 				mPendingImageUris.addAll(extractUriFromIntent(data));
 				if (xmppConnectionServiceBound) {
-					for(Iterator<Uri> i = mPendingImageUris.iterator(); i.hasNext(); i.remove()) {
-						attachImageToConversation(getSelectedConversation(),i.next());
+					for (Iterator<Uri> i = mPendingImageUris.iterator(); i.hasNext(); i.remove()) {
+						attachImageToConversation(getSelectedConversation(), i.next());
 					}
 				}
 			} else if (requestCode == ATTACHMENT_CHOICE_CHOOSE_FILE || requestCode == ATTACHMENT_CHOICE_RECORD_VOICE) {
 				mPendingFileUris.clear();
 				mPendingFileUris.addAll(extractUriFromIntent(data));
 				if (xmppConnectionServiceBound) {
-					for(Iterator<Uri> i = mPendingFileUris.iterator(); i.hasNext(); i.remove()) {
+					for (Iterator<Uri> i = mPendingFileUris.iterator(); i.hasNext(); i.remove()) {
 						attachFileToConversation(getSelectedConversation(), i.next());
 					}
 				}
@@ -1066,66 +1325,109 @@ public class ConversationActivity extends XmppActivity
 					mPendingImageUris.clear();
 				}
 			} else if (requestCode == ATTACHMENT_CHOICE_LOCATION) {
-				double latitude = data.getDoubleExtra("latitude",0);
-				double longitude = data.getDoubleExtra("longitude",0);
-				this.mPendingGeoUri = Uri.parse("geo:"+String.valueOf(latitude)+","+String.valueOf(longitude));
+				double latitude = data.getDoubleExtra("latitude", 0);
+				double longitude = data.getDoubleExtra("longitude", 0);
+				this.mPendingGeoUri = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 				if (xmppConnectionServiceBound) {
 					attachLocationToConversation(getSelectedConversation(), mPendingGeoUri);
 					this.mPendingGeoUri = null;
 				}
+			} else if (requestCode == REQUEST_TRUST_KEYS_TEXT || requestCode == REQUEST_TRUST_KEYS_MENU) {
+				this.forbidProcessingPendings = !xmppConnectionServiceBound;
+				if (xmppConnectionServiceBound) {
+					mConversationFragment.onActivityResult(requestCode, resultCode, data);
+					this.mPostponedActivityResult = null;
+				} else {
+					this.mPostponedActivityResult = new Pair<>(requestCode, data);
+				}
+
 			}
 		} else {
-			mPendingImageUris.clear();
-			mPendingFileUris.clear();
+            mPendingImageUris.clear();
+            mPendingFileUris.clear();
+            if (requestCode == ConversationActivity.REQUEST_DECRYPT_PGP) {
+                mConversationFragment.onActivityResult(requestCode, resultCode, data);
+            }
+            if (requestCode == REQUEST_BATTERY_OP) {
+                setNeverAskForBatteryOptimizationsAgain();
+            }
 		}
 	}
 
+    private void setNeverAskForBatteryOptimizationsAgain() {
+        getPreferences().edit().putBoolean("show_battery_optimization", false).commit();
+    }
+
+    private void openBatteryOptimizationDialogIfNeeded() {
+        if (showBatteryOptimizationWarning() && getPreferences().getBoolean("show_battery_optimization", true)) {
+            AlertDialog.Builder builder = new AlertDialog.Builder(this);
+            builder.setTitle(R.string.battery_optimizations_enabled);
+            builder.setMessage(R.string.battery_optimizations_enabled_dialog);
+            builder.setPositiveButton(R.string.next, new OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialog, int which) {
+                    Intent intent = new Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS);
+                    Uri uri = Uri.parse("package:" + getPackageName());
+                    intent.setData(uri);
+                    startActivityForResult(intent, REQUEST_BATTERY_OP);
+                }
+            });
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
+                builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
+                    @Override
+                    public void onDismiss(DialogInterface dialog) {
+                        setNeverAskForBatteryOptimizationsAgain();
+                    }
+                });
+            }
+            builder.create().show();
+        }
+    }
+
 	private void attachLocationToConversation(Conversation conversation, Uri uri) {
-		if (conversation == null) {
-			return;
-		}
 		xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 
-            @Override
-            public void success(Message message) {
-                xmppConnectionService.sendMessage(message);
-            }
+			@Override
+			public void success(Message message) {
+				xmppConnectionService.sendMessage(message);
+			}
 
-            @Override
-            public void error(int errorCode, Message object) {
+			@Override
+			public void error(int errorCode, Message object) {
 
-            }
+			}
 
-            @Override
-            public void userInputRequried(PendingIntent pi, Message object) {
+			@Override
+			public void userInputRequried(PendingIntent pi, Message object) {
 
-            }
-        });
+			}
+		});
 	}
 
 	private void attachFileToConversation(Conversation conversation, Uri uri) {
 		if (conversation == null) {
 			return;
 		}
-		prepareFileToast = Toast.makeText(getApplicationContext(),getText(R.string.preparing_file), Toast.LENGTH_LONG);
+		final Toast prepareFileToast = Toast.makeText(getApplicationContext(),getText(R.string.preparing_file), Toast.LENGTH_LONG);
 		prepareFileToast.show();
 		xmppConnectionService.attachFileToConversation(conversation, uri, new UiCallback<Message>() {
-            @Override
-            public void success(Message message) {
-                hidePrepareFileToast();
-                xmppConnectionService.sendMessage(message);
-            }
+			@Override
+			public void success(Message message) {
+				hidePrepareFileToast(prepareFileToast);
+				xmppConnectionService.sendMessage(message);
+			}
 
-            @Override
-            public void error(int errorCode, Message message) {
-                displayErrorDialog(errorCode);
-            }
+			@Override
+			public void error(int errorCode, Message message) {
+				hidePrepareFileToast(prepareFileToast);
+				displayErrorDialog(errorCode);
+			}
 
-            @Override
-            public void userInputRequried(PendingIntent pi, Message message) {
+			@Override
+			public void userInputRequried(PendingIntent pi, Message message) {
 
-            }
-        });
+			}
+		});
 	}
 
 	private void attachImageToConversation(Conversation conversation, Uri uri) {
@@ -1137,7 +1439,7 @@ public class ConversationActivity extends XmppActivity
         userDecisionDialog.decide(ConversationsPlusPreferences.resizePicture());
 	}
 
-	private void hidePrepareFileToast() {
+	private void hidePrepareFileToast(final Toast prepareFileToast) {
 		if (prepareFileToast != null) {
 			runOnUiThread(new Runnable() {
 
@@ -1176,7 +1478,7 @@ public class ConversationActivity extends XmppActivity
 
 					@Override
 					public void userInputRequried(PendingIntent pi,
-							Message message) {
+												  Message message) {
 						ConversationActivity.this.runIntent(pi,
 								ConversationActivity.REQUEST_SEND_MESSAGE);
 					}
@@ -1194,26 +1496,38 @@ public class ConversationActivity extends XmppActivity
 				});
 	}
 
+	protected boolean trustKeysIfNeeded(int requestCode) {
+		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
+	}
+
+	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
+		AxolotlService axolotlService = mSelectedConversation.getAccount().getAxolotlService();
+		Contact contact = mSelectedConversation.getContact();
+		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(XmppAxolotlSession.Trust.UNDECIDED).isEmpty();
+		boolean hasUndecidedContact = !axolotlService.getKeysWithTrust(XmppAxolotlSession.Trust.UNDECIDED,contact).isEmpty();
+		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(mSelectedConversation).isEmpty();
+		boolean hasNoTrustedKeys = axolotlService.getNumTrustedKeys(mSelectedConversation.getContact()) == 0;
+		if(hasUndecidedOwn || hasUndecidedContact || hasPendingKeys || hasNoTrustedKeys) {
+			axolotlService.createSessionsIfNeeded(mSelectedConversation);
+			Intent intent = new Intent(getApplicationContext(), TrustKeysActivity.class);
+			intent.putExtra("contact", mSelectedConversation.getContact().getJid().toBareJid().toString());
+			intent.putExtra(EXTRA_ACCOUNT, mSelectedConversation.getAccount().getJid().toBareJid().toString());
+			intent.putExtra("choice", attachmentChoice);
+			intent.putExtra("has_no_trusted", hasNoTrustedKeys);
+			startActivityForResult(intent, requestCode);
+			return true;
+		} else {
+			return false;
+		}
+	}
+
 	@Override
 	protected void refreshUiReal() {
 		updateConversationList();
-		if (xmppConnectionService != null && xmppConnectionService.getAccounts().size() == 0) {
-			if (!mRedirected) {
-				this.mRedirected = true;
-				startActivity(new Intent(this, EditAccountActivity.class));
-				finish();
-			}
-		} else if (conversationList.size() == 0) {
-			if (!mRedirected) {
-				this.mRedirected = true;
-				Intent intent = new Intent(this, StartConversationActivity.class);
-				intent.putExtra("init",true);
-				startActivity(intent);
-				finish();
-			}
-		} else {
+		if (conversationList.size() > 0) {
 			ConversationActivity.this.mConversationFragment.updateMessages();
 			updateActionBarTitle();
+			invalidateOptionsMenu();
 		}
 	}
 
@@ -1235,12 +1549,6 @@ public class ConversationActivity extends XmppActivity
 	@Override
 	public void OnUpdateBlocklist(Status status) {
 		this.refreshUi();
-		runOnUiThread(new Runnable() {
-			@Override
-			public void run() {
-				invalidateOptionsMenu();
-			}
-		});
 	}
 
 	public void unblockConversation(final Blockable conversation) {