Added close headers button

app/src/main/java/eu/faircode/email/AdapterMessage.java

@@ -430,6 +430,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
         private TextView tvKeywordsEx;
 
         private TextView tvHeaders;
+        private ImageButton ibCloseHeaders;
         private ContentLoadingProgressBar pbHeaders;
         private TextView tvNoInternetHeaders;
 
@@ -636,6 +637,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvKeywordsEx = vsBody.findViewById(R.id.tvKeywordsEx);
 
             tvHeaders = vsBody.findViewById(R.id.tvHeaders);
+            ibCloseHeaders = vsBody.findViewById(R.id.ibCloseHeaders);
             pbHeaders = vsBody.findViewById(R.id.pbHeaders);
             tvNoInternetHeaders = vsBody.findViewById(R.id.tvNoInternetHeaders);
 
@@ -764,6 +766,8 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                 ibPinContact.setOnClickListener(this);
                 ibAddContact.setOnClickListener(this);
 
+                ibCloseHeaders.setOnClickListener(this);
+
                 ibSaveAttachments.setOnClickListener(this);
                 ibDownloadAttachments.setOnClickListener(this);
 
@@ -876,6 +880,8 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                 ibPinContact.setOnClickListener(null);
                 ibAddContact.setOnClickListener(null);
 
+                ibCloseHeaders.setOnClickListener(null);
+
                 ibSaveAttachments.setOnClickListener(null);
                 ibDownloadAttachments.setOnClickListener(null);
 
@@ -3023,6 +3029,8 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                 int id = view.getId();
                 if (id == R.id.ibExpanderAddress) {
                     onToggleAddresses(message);
+                } else if (id == R.id.ibCloseHeaders) {
+                    onMenuShowHeaders(message);
                 } else if (id == R.id.ibSaveAttachments) {
                     onSaveAttachments(message);
                 } else if (id == R.id.ibDownloadAttachments) {

app/src/main/res/layout/include_message_headers.xml

@@ -30,6 +30,16 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/vSeparatorHeaders" />
 
+    <ImageButton
+        android:id="@+id/ibCloseHeaders"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:background="?android:attr/selectableItemBackgroundBorderless"
+        android:padding="6dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/tvHeaders"
+        app:srcCompat="@drawable/twotone_cancel_24" />
+
     <eu.faircode.email.ContentLoadingProgressBar
         android:id="@+id/pbHeaders"
         style="@style/Base.Widget.AppCompat.ProgressBar"
@@ -56,5 +66,5 @@
         android:id="@+id/grpHeaders"
         android:layout_width="0dp"
         android:layout_height="0dp"
-        app:constraint_referenced_ids="vSeparatorHeaders,tvHeaders" />
+        app:constraint_referenced_ids="vSeparatorHeaders,tvHeaders,ibCloseHeaders" />
 </androidx.constraintlayout.widget.ConstraintLayout>