fix: prevent flickering on message view

.gitlab-ci.yml

@@ -18,7 +18,6 @@ cache:
     - .gradle/
 
 before_script:
-  - apt-get update -qq && apt-get install -y -qq pandoc wget
   # Get sdk version from project
   - export ANDROID_COMPILE_SDK=`egrep '^[[:blank:]]+compileSdkVersion'  app/build.gradle | awk '{print $2}'`
   # Explict output for logging purpose only

app/src/main/java/org/dystopia/email/AdapterMessage.java

@@ -424,7 +424,7 @@ public class AdapterMessage extends PagedListAdapter<TupleMessageEx, AdapterMess
         tvError.setVisibility(message.error == null ? View.GONE : View.VISIBLE);
       }
 
-      int typeface = (message.unseen > 0 ? Typeface.BOLD : Typeface.NORMAL);
+      int typeface = (message.unseen <= 0 || show_expanded ? Typeface.NORMAL : Typeface.BOLD);
       tvFrom.setTypeface(null, typeface);
       tvTime.setTypeface(null, typeface);
       tvSubject.setTypeface(null, typeface);
@@ -448,8 +448,8 @@ public class AdapterMessage extends PagedListAdapter<TupleMessageEx, AdapterMess
       pbHeaders.setVisibility(View.GONE);
       grpHeaders.setVisibility(show_headers && show_expanded ? View.VISIBLE : View.GONE);
 
-      bnvActions.setVisibility(View.GONE);
-      vSeparatorBody.setVisibility(View.GONE);
+      bnvActions.setVisibility(show_expanded ? View.INVISIBLE : View.GONE);
+      vSeparatorBody.setVisibility(!show_expanded ? View.INVISIBLE : View.GONE);
       btnImages.setVisibility(View.GONE);
       pbBody.setVisibility(View.GONE);
       grpAttachments.setVisibility(
@@ -1623,14 +1623,15 @@ public class AdapterMessage extends PagedListAdapter<TupleMessageEx, AdapterMess
   private static final DiffUtil.ItemCallback<TupleMessageEx> DIFF_CALLBACK =
       new DiffUtil.ItemCallback<TupleMessageEx>() {
         @Override
-        public boolean areItemsTheSame(@NonNull TupleMessageEx prev, @NonNull TupleMessageEx next) {
+        public boolean areItemsTheSame(
+            @NonNull TupleMessageEx prev, @NonNull TupleMessageEx next) {
           return prev.id.equals(next.id);
         }
 
         @Override
         public boolean areContentsTheSame(
             @NonNull TupleMessageEx prev, @NonNull TupleMessageEx next) {
-          return prev.equals(next);
+          return prev.shallowEquals(next);
         }
       };
 

app/src/main/java/org/dystopia/email/EntityMessage.java

@@ -83,6 +83,7 @@ import javax.mail.Address;
       @Index(value = {"ui_found"}),
       @Index(value = {"ui_ignored"})
     })
+
 public class EntityMessage implements Serializable {
   static final String TABLE_NAME = "message";
 
@@ -230,6 +231,32 @@ public class EntityMessage implements Serializable {
     return false;
   }
 
+  public boolean shallowEquals(Object obj) {
+    if (obj instanceof EntityMessage) {
+      EntityMessage other = (EntityMessage) obj;
+      return ((this.msgid == null ? other.msgid == null : this.msgid.equals(other.msgid))
+          && (this.thread == null ? other.thread == null : this.thread.equals(other.thread))
+          && (this.avatar == null ? other.avatar == null : this.avatar.equals(other.avatar))
+          && equal(this.from, other.from)
+          && equal(this.to, other.to)
+          && equal(this.cc, other.cc)
+          && equal(this.bcc, other.bcc)
+          && equal(this.reply, other.reply)
+          && (this.headers == null ? other.headers == null : this.headers.equals(other.headers))
+          && (this.subject == null ? other.subject == null : this.subject.equals(other.subject))
+          && (this.size == null ? other.size == null : this.size.equals(other.size))
+          && this.content == other.content
+          && this.received.equals(other.received)
+          && this.ui_seen.equals(other.ui_seen)
+          && this.ui_flagged.equals(other.ui_flagged)
+          && this.ui_hide.equals(other.ui_hide)
+          && this.ui_found.equals(other.ui_found)
+          && this.ui_ignored.equals(other.ui_ignored)
+          && (this.error == null ? other.error == null : this.error.equals(other.error)));
+    }
+    return false;
+  }
+
   private static boolean equal(Address[] a1, Address[] a2) {
     if (a1 == null && a2 == null) {
       return true;

app/src/main/java/org/dystopia/email/TupleMessageEx.java

@@ -31,6 +31,11 @@ public class TupleMessageEx extends EntityMessage {
   public int unflagged;
   public int attachments;
 
+  @Override
+  public boolean shallowEquals(Object obj) {
+    return super.shallowEquals(obj);
+  }
+
   @Override
   public boolean equals(Object obj) {
     if (obj instanceof TupleMessageEx) {
@@ -52,6 +57,6 @@ public class TupleMessageEx extends EntityMessage {
           && this.unflagged == other.unflagged
           && this.attachments == other.attachments);
     }
-    return super.equals(obj);
+    return false;
   }
 }