Color plaintext messages in encrypted sessions red

Plaintext messages that were received while in an encrypted session are
now colored red. We define "in an encrypted session" if a) the last
message sent by our own device before the message under consideration
(or any message received between then and now) was encrypted AND b) the
next message will be sent encrypted or the next message sent after the
one under consideration was sent encrypted

1 files changed, 30 insertions, 0 deletions

diff --git a/src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java b/src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java
index f55094af6..c44796bac 100644
--- a/src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java
+++ b/src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java
@@ -560,6 +560,36 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 			}
 		}
 
+		if (type == RECEIVED) {
+			boolean wasEncrypted = false;
+			for (Message iterator = message.prev(); iterator != null; iterator = iterator.prev()){
+				if (iterator.getEncryption() != Message.ENCRYPTION_NONE) {
+					wasEncrypted = true;
+					break;
+				}
+				if (iterator.getRemoteMsgId() == null && iterator.getType() == SENT) {
+					break;
+				}
+			}
+			boolean willBeEncrypted = conversation.getNextEncryption(false) != Message.ENCRYPTION_NONE;
+			for (Message iterator = message.next(); iterator != null; iterator = iterator.next()){
+				if (iterator.getEncryption() != Message.ENCRYPTION_NONE) {
+					willBeEncrypted = true;
+					break;
+				}
+				if (iterator.getRemoteMsgId() == null && iterator.getType() == SENT) {
+					break;
+				}
+			}
+
+			if ( willBeEncrypted && wasEncrypted
+					&& message.getEncryption() == Message.ENCRYPTION_NONE) {
+				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received_warning);
+			} else {
+				viewHolder.message_box.setBackgroundResource(R.drawable.message_bubble_received);
+			}
+		}
+
 		displayStatus(viewHolder, message);
 
 		return view;