Improved list state

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

@@ -0,0 +1,65 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    FairEmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2020 by Marcel Bokhorst (M66B)
+*/
+
+import android.content.Context;
+import android.util.AttributeSet;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.AppCompatTextView;
+
+public class ViewTextDelayed extends AppCompatTextView {
+    private int visibility;
+
+    private static final int VISIBILITY_DELAY = 1000; // milliseconds
+
+    public ViewTextDelayed(@NonNull Context context) {
+        super(context);
+    }
+
+    public ViewTextDelayed(@NonNull Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ViewTextDelayed(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @Override
+    public void setVisibility(int visibility) {
+        this.visibility = visibility;
+
+        removeCallbacks(delayedShow);
+        if (visibility == VISIBLE) {
+            super.setVisibility(INVISIBLE);
+            postDelayed(delayedShow, VISIBILITY_DELAY);
+        } else
+            super.setVisibility(visibility);
+    }
+
+    private final Runnable delayedShow = new Runnable() {
+        @Override
+        public void run() {
+            if (visibility == VISIBLE)
+                ViewTextDelayed.super.setVisibility(VISIBLE);
+        }
+    };
+}