Introduced expert options to control enter-is-send

(default == off)

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

@@ -1058,4 +1058,8 @@ public class ConversationActivity extends XmppActivity
 	public void blockConversation(final Blockable conversation) {
 		xmppConnectionService.sendBlockRequest(conversation);
 	}
+
+	public boolean enterIsSend() {
+		return getPreferences().getBoolean("enter_is_send",false);
+	}
 }

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

@@ -316,8 +316,13 @@ public class ConversationFragment extends Fragment {
 		mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
 
 			@Override
-			public void onEnterPressed() {
+			public boolean onEnterPressed() {
+				if (activity.enterIsSend()) {
 					sendMessage();
+					return true;
+				} else {
+					return false;
+				}
 			}
 		});
 

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

@@ -21,9 +21,12 @@ public class EditMessage extends EditText {
 	public boolean onKeyDown(int keyCode, KeyEvent event) {
 		if (keyCode == KeyEvent.KEYCODE_ENTER) {
 			if (mOnEnterPressed != null) {
-				mOnEnterPressed.onEnterPressed();
+				if (mOnEnterPressed.onEnterPressed()) {
-			}
 					return true;
+				} else {
+					return super.onKeyDown(keyCode, event);
+				}
+			}
 		}
 		return super.onKeyDown(keyCode, event);
 	}
@@ -33,7 +36,7 @@ public class EditMessage extends EditText {
 	}
 
 	public interface OnEnterPressed {
-		public void onEnterPressed();
+		public boolean onEnterPressed();
 	}
 
 }

src/main/res/values/strings.xml

@@ -434,4 +434,7 @@
 	<string name="two_hours">2 hours</string>
 	<string name="eight_hours">8 hours</string>
 	<string name="until_further_notice">Until further notice</string>
+	<string name="pref_input_options">Input options</string>
+	<string name="pref_enter_is_send">Enter is send</string>
+	<string name="pref_enter_is_send_summary">Use enter key to send message</string>
 </resources>

src/main/res/xml/preferences.xml

@@ -122,6 +122,13 @@
                     android:summary="@string/pref_enable_legacy_ssl_summary"
                     android:title="@string/pref_enable_legacy_ssl" />
             </PreferenceCategory>
+	        <PreferenceCategory android:title="@string/pref_input_options">
+		        <CheckBoxPreference
+			        android:defaultValue="false"
+			        android:key="enter_is_send"
+			        android:title="@string/pref_enter_is_send"
+			        android:summary="@string/pref_enter_is_send_summary" />
+	        </PreferenceCategory>
             <PreferenceCategory android:title="@string/pref_expert_options_other" >
                 <CheckBoxPreference
                     android:defaultValue="false"