changed single_account config into more simple lock_settings

src/main/java/eu/siacs/conversations/Config.java

@@ -45,7 +45,7 @@ public final class Config {
 	public static final String CONFERENCE_DOMAIN_LOCK = null; //only allow conference creation for this domain
 	public static final boolean LOCK_DOMAINS_IN_CONVERSATIONS = false; //only add contacts and conferences for own domains
 
-	public static final boolean SINGLE_ACCOUNT = false; //set to true to allow only one account
+	public static final boolean LOCK_SETTINGS = false; //set to true to disallow account and settings editing
 	public static final boolean DISALLOW_REGISTRATION_IN_UI = false; //hide the register checkbox
 
 	public static final boolean ALLOW_NON_TLS_CONNECTIONS = false; //very dangerous. you should have a good reason to set this to true

src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java

@@ -333,7 +333,7 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 	@Override
 	public boolean onCreateOptionsMenu(Menu menu) {
 		getMenuInflater().inflate(R.menu.muc_details, menu);
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	@Override

src/main/java/eu/siacs/conversations/ui/ContactDetailsActivity.java

@@ -297,7 +297,7 @@ public class ContactDetailsActivity extends XmppActivity implements OnAccountUpd
 			edit.setVisible(false);
 			delete.setVisible(false);
 		}
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	private void populateView() {

src/main/java/eu/siacs/conversations/ui/ConversationActivity.java

@@ -420,7 +420,7 @@ public class ConversationActivity extends XmppActivity
 				}
 			}
 		}
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	protected void selectPresenceToAttachFile(final int attachmentChoice, final int encryption) {

src/main/java/eu/siacs/conversations/ui/EditAccountActivity.java

@@ -499,7 +499,7 @@ public class EditAccountActivity extends XmppActivity implements OnAccountUpdate
 			clearDevices.setVisible(false);
 			mamPrefs.setVisible(false);
 		}
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	@Override
@@ -621,6 +621,13 @@ public class EditAccountActivity extends XmppActivity implements OnAccountUpdate
 			this.mNamePort.setVisibility(mShowOptions ? View.VISIBLE : View.GONE);
 
 		}
+		mPassword.setEnabled(!Config.LOCK_SETTINGS);
+		mAccountJid.setEnabled(!Config.LOCK_SETTINGS);
+		mHostname.setEnabled(!Config.LOCK_SETTINGS);
+		mPort.setEnabled(!Config.LOCK_SETTINGS);
+		mPasswordConfirm.setEnabled(!Config.LOCK_SETTINGS);
+		mRegisterNew.setEnabled(!Config.LOCK_SETTINGS);
+
 		if (!mInitMode) {
 			this.mAvatar.setVisibility(View.VISIBLE);
 			this.mAvatar.setImageBitmap(avatarService().get(this.mAccount, getPixel(72)));

src/main/java/eu/siacs/conversations/ui/ManageAccountActivity.java

@@ -155,9 +155,9 @@ public class ManageAccountActivity extends XmppActivity implements OnAccountUpda
 			addAccount.setVisible(false);
 			addAccountWithCertificate.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
 		} else {
-			addAccount.setVisible(!Config.SINGLE_ACCOUNT);
+			addAccount.setVisible(!Config.LOCK_SETTINGS);
 		}
-		addAccountWithCertificate.setVisible(!Config.SINGLE_ACCOUNT);
+		addAccountWithCertificate.setVisible(!Config.LOCK_SETTINGS);
 
 		if (!accountsLeftToEnable()) {
 			enableAll.setVisible(false);

src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java

@@ -533,7 +533,7 @@ public class StartConversationActivity extends XmppActivity implements OnRosterU
 			mSearchEditText.append(mInitialJid);
 			filter(mInitialJid);
 		}
-		return true;
+		return super.onCreateOptionsMenu(menu);
 	}
 
 	@Override

src/main/java/eu/siacs/conversations/ui/XmppActivity.java

@@ -42,6 +42,7 @@ import android.preference.PreferenceManager;
 import android.text.InputType;
 import android.util.DisplayMetrics;
 import android.util.Log;
+import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.inputmethod.InputMethodManager;
@@ -377,6 +378,19 @@ public abstract class XmppActivity extends Activity {
 		}
 	}
 
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu) {
+		final MenuItem menuSettings = menu.findItem(R.id.action_settings);
+		final MenuItem menuManageAccounts = menu.findItem(R.id.action_accounts);
+		if (menuSettings != null) {
+			menuSettings.setVisible(!Config.LOCK_SETTINGS);
+		}
+		if (menuManageAccounts != null) {
+			menuManageAccounts.setVisible(!Config.LOCK_SETTINGS);
+		}
+		return super.onCreateOptionsMenu(menu);
+	}
+
 	protected boolean showBatteryOptimizationWarning() {
 		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 			PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);