Allow closing unused inline images hint

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

@@ -161,7 +161,7 @@ public class FragmentCompose extends FragmentBase {
     private ImageButton ibCcBcc;
     private RecyclerView rvAttachment;
     private TextView tvNoInternetAttachments;
-    private TextView tvUnusedInlineImages;
+    private ImageButton ibCloseUnusedImagesHint;
     private EditTextCompose etBody;
     private TextView tvNoInternet;
     private TextView tvSignature;
@@ -178,6 +178,7 @@ public class FragmentCompose extends FragmentBase {
     private Group grpExtra;
     private Group grpAddresses;
     private Group grpAttachments;
+    private Group grpUnusedImagesHint;
     private Group grpBody;
     private Group grpSignature;
     private Group grpReferenceHint;
@@ -259,7 +260,7 @@ public class FragmentCompose extends FragmentBase {
         ibCcBcc = view.findViewById(R.id.ivCcBcc);
         rvAttachment = view.findViewById(R.id.rvAttachment);
         tvNoInternetAttachments = view.findViewById(R.id.tvNoInternetAttachments);
-        tvUnusedInlineImages = view.findViewById(R.id.tvUnusedInlineImages);
+        ibCloseUnusedImagesHint = view.findViewById(R.id.ibCloseUnusedImagesHint);
         etBody = view.findViewById(R.id.etBody);
         tvNoInternet = view.findViewById(R.id.tvNoInternet);
         tvSignature = view.findViewById(R.id.tvSignature);
@@ -278,6 +279,7 @@ public class FragmentCompose extends FragmentBase {
         grpAddresses = view.findViewById(R.id.grpAddresses);
         grpAttachments = view.findViewById(R.id.grpAttachments);
         grpBody = view.findViewById(R.id.grpBody);
+        grpUnusedImagesHint = view.findViewById(R.id.grpUnusedImagesHint);
         grpSignature = view.findViewById(R.id.grpSignature);
         grpReferenceHint = view.findViewById(R.id.grpReferenceHint);
 
@@ -384,6 +386,15 @@ public class FragmentCompose extends FragmentBase {
 
         setZoom();
 
+        ibCloseUnusedImagesHint.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
+                prefs.edit().putBoolean("inline_image_hint", false).apply();
+                grpUnusedImagesHint.setVisibility(View.GONE);
+            }
+        });
+
         etBody.setInputContentListener(new EditTextCompose.IInputContentListener() {
             @Override
             public void onInputContent(Uri uri) {
@@ -642,7 +653,7 @@ public class FragmentCompose extends FragmentBase {
         rvAttachment.setAdapter(adapter);
 
         tvNoInternetAttachments.setVisibility(View.GONE);
-        tvUnusedInlineImages.setVisibility(View.GONE);
+        grpUnusedImagesHint.setVisibility(View.GONE);
 
         String pkg = Helper.getOpenKeychainPackage(getContext());
         Log.i("Binding to " + pkg);
@@ -2705,7 +2716,9 @@ public class FragmentCompose extends FragmentBase {
                             rvAttachment.setTag(downloading);
                             checkInternet();
 
-                            tvUnusedInlineImages.setVisibility(inline_images ? View.VISIBLE : View.GONE);
+                            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
+                            boolean inline_image_hint = prefs.getBoolean("inline_image_hint", true);
+                            grpUnusedImagesHint.setVisibility(inline_images && inline_image_hint ? View.VISIBLE : View.GONE);
                         }
                     });
 

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

@@ -69,7 +69,8 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private final static String[] RESET_QUESTIONS = new String[]{
             "welcome", "crash_reports_asked",
             "html_always_images", "print_html_confirmed",
-            "identities_asked", "compose_reference", "send_dialog"
+            "identities_asked",
+            "inline_image_hint", "compose_reference", "send_dialog"
     };
 
     @Override

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

@@ -224,15 +224,29 @@
                     app:layout_constraintStart_toStartOf="@id/rvAttachment"
                     app:layout_constraintTop_toBottomOf="@id/rvAttachment" />
 
-                <TextView
-                    android:id="@+id/tvUnusedInlineImages"
+                <ImageButton
+                    android:id="@+id/ibCloseUnusedImagesHint"
                     android:layout_width="wrap_content"
+                    android:layout_height="0dp"
+                    android:background="@null"
+                    android:contentDescription="@string/title_no_format"
+                    app:layout_constraintBottom_toBottomOf="@+id/tvUnusedImagesHint"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toTopOf="@+id/tvUnusedImagesHint"
+                    app:srcCompat="@drawable/baseline_close_24" />
+
+                <TextView
+                    android:id="@+id/tvUnusedImagesHint"
+                    android:layout_width="0dp"
                     android:layout_height="wrap_content"
+                    android:layout_marginStart="6dp"
                     android:layout_marginTop="6dp"
+                    android:layout_marginEnd="6dp"
                     android:text="@string/title_unused_inline"
                     android:textAppearance="@style/TextAppearance.AppCompat.Small"
-                    app:layout_constraintEnd_toEndOf="@id/rvAttachment"
-                    app:layout_constraintStart_toStartOf="@id/rvAttachment"
+                    android:textStyle="italic"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toEndOf="@id/ibCloseUnusedImagesHint"
                     app:layout_constraintTop_toBottomOf="@id/tvNoInternetAttachments" />
 
                 <View
@@ -243,7 +257,7 @@
                     android:background="?attr/colorSeparator"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@+id/tvUnusedInlineImages" />
+                    app:layout_constraintTop_toBottomOf="@+id/ibCloseUnusedImagesHint" />
 
                 <eu.faircode.email.EditTextCompose
                     android:id="@+id/etBody"
@@ -321,7 +335,7 @@
                 <ImageButton
                     android:id="@+id/ibCloseRefHint"
                     android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
+                    android:layout_height="0dp"
                     android:background="@null"
                     android:contentDescription="@string/title_no_format"
                     app:layout_constraintBottom_toBottomOf="@+id/tvReferenceHint"
@@ -414,6 +428,12 @@
                     android:layout_height="0dp"
                     app:constraint_referenced_ids="vSeparatorAttachments,rvAttachment" />
 
+                <androidx.constraintlayout.widget.Group
+                    android:id="@+id/grpUnusedImagesHint"
+                    android:layout_width="0dp"
+                    android:layout_height="0dp"
+                    app:constraint_referenced_ids="ibCloseUnusedImagesHint,tvUnusedImagesHint" />
+
                 <androidx.constraintlayout.widget.Group
                     android:id="@+id/grpBody"
                     android:layout_width="0dp"