remove 'indicate received' setting and default to true

src/main/java/eu/siacs/conversations/generator/MessageGenerator.java

@@ -37,16 +37,14 @@ public class MessageGenerator extends AbstractGenerator {
 		if (conversation.getMode() == Conversation.MODE_SINGLE) {
 			packet.setTo(message.getCounterpart());
 			packet.setType(MessagePacket.TYPE_CHAT);
-			if (this.mXmppConnectionService.indicateReceived() && !isWithSelf) {
+			if (!isWithSelf) {
 				packet.addChild("request", "urn:xmpp:receipts");
 			}
 		} else if (message.isPrivateMessage()) {
 			packet.setTo(message.getCounterpart());
 			packet.setType(MessagePacket.TYPE_CHAT);
 			packet.addChild("x", "http://jabber.org/protocol/muc#user");
-			if (this.mXmppConnectionService.indicateReceived()) {
 			packet.addChild("request", "urn:xmpp:receipts");
-			}
 		} else {
 			packet.setTo(message.getCounterpart().asBareJid());
 			packet.setType(MessagePacket.TYPE_GROUPCHAT);

src/main/java/eu/siacs/conversations/services/XmppConnectionService.java

@@ -3906,10 +3906,6 @@ public class XmppConnectionService extends Service {
         return getBooleanPreference("autojoin", R.bool.autojoin);
     }
 
-    public boolean indicateReceived() {
-        return getBooleanPreference("indicate_received", R.bool.indicate_received);
-    }
-
     public boolean useTorToConnect() {
         return QuickConversationsService.isConversations() && getBooleanPreference("use_tor", R.bool.use_tor);
     }

src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java

@@ -89,7 +89,6 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
 	private DisplayMetrics metrics;
 	private OnContactPictureClicked mOnContactPictureClickedListener;
 	private OnContactPictureLongClicked mOnContactPictureLongClickedListener;
-	private boolean mIndicateReceived = false;
 	private boolean mUseGreenBackground = false;
 	private OnQuoteListener onQuoteListener;
 	public MessageAdapter(XmppActivity activity, List<Message> messages) {
@@ -208,9 +207,7 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
 				break;
 			case Message.STATUS_SEND_RECEIVED:
 			case Message.STATUS_SEND_DISPLAYED:
-				if (mIndicateReceived) {
 				viewHolder.indicatorReceived.setVisibility(View.VISIBLE);
-				}
 				break;
 			case Message.STATUS_SEND_FAILED:
 				final String errorMessage = message.getErrorMessage();
@@ -910,7 +907,6 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
 
 	public void updatePreferences() {
 		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
-		this.mIndicateReceived = p.getBoolean("indicate_received", activity.getResources().getBoolean(R.bool.indicate_received));
 		this.mUseGreenBackground = p.getBoolean("use_green_background", activity.getResources().getBoolean(R.bool.use_green_background));
 	}
 

src/main/res/values/defaults.xml

@@ -32,7 +32,6 @@
     <bool name="manually_change_presence">false</bool>
     <bool name="away_when_screen_off">false</bool>
     <bool name="autojoin">true</bool>
-    <bool name="indicate_received">false</bool>
     <bool name="enable_foreground_service">false</bool>
     <bool name="never_send">false</bool>
     <bool name="validate_hostname">false</bool>

src/main/res/values/strings.xml

@@ -282,8 +282,6 @@
     <string name="title_pref_enable_quiet_hours">Enable quiet hours</string>
     <string name="pref_quiet_hours_summary">Notifications will be silenced during quiet hours</string>
     <string name="pref_use_send_button_to_indicate_status">Send button indicates status</string>
-    <string name="pref_use_indicate_received">Request message receipts</string>
-    <string name="pref_use_indicate_received_summary">Received messages will be marked with a green tick if supported</string>
     <string name="pref_use_send_button_to_indicate_status_summary">Colorize send button to indicate contact status</string>
     <string name="pref_expert_options_other">Other</string>
     <string name="pref_autojoin">Synchronize with bookmarks</string>

src/main/res/xml/preferences.xml

@@ -328,11 +328,6 @@
             <PreferenceCategory
                 android:key="other_expert_category"
                 android:title="@string/pref_expert_options_other">
-                <CheckBoxPreference
-                    android:defaultValue="@bool/indicate_received"
-                    android:key="indicate_received"
-                    android:summary="@string/pref_use_indicate_received_summary"
-                    android:title="@string/pref_use_indicate_received" />
                 <CheckBoxPreference
                     android:defaultValue="@bool/enable_foreground_service"
                     android:key="enable_foreground_service"