Create ContributionListViewUtils class to change visibility of views according to MediaDetailsFragment visiblity or their loading state

app/src/main/java/fr/free/nrw/commons/utils/ContributionListViewUtils.java

@@ -0,0 +1,39 @@
+package fr.free.nrw.commons.utils;
+
+import android.util.Log;
+import android.view.View;
+
+/**
+ * This class includes utilities for contribution list fragment indicators, such as number of
+ * uploads, notification and nearby cards and their progress bar behind them.
+ */
+public class ContributionListViewUtils {
+
+    /**
+     * Sets indicator and progress bar visibility according to 3 states, data is ready to display,
+     * data still loading, both should be invisible because media details fragment is visible
+     * @param indicator this can be numOfUploads text view, notification/nearby card views
+     * @param progressBar this is the progress bar behind indicators, displays they are loading
+     * @param isIndicatorReady is indicator fetched the information will be displayed
+     * @param isBothInvisible true if contribution list fragment is not active (ie. Media Details Fragment is active)
+     */
+    public static void setIndicatorVisibility(View indicator, View progressBar, boolean isIndicatorReady, boolean isBothInvisible) {
+        if (indicator!=null && progressBar!=null) {
+            if (isIndicatorReady) {
+                // Indicator ready, display them
+                indicator.setVisibility(View.VISIBLE);
+                progressBar.setVisibility(View.GONE);
+            } else {
+                if (isBothInvisible) {
+                    //  Media Details Fragment is visible, hide both
+                    indicator.setVisibility(View.GONE);
+                    progressBar.setVisibility(View.GONE);
+                } else {
+                    //  Indicator is not ready, still loading
+                    indicator.setVisibility(View.GONE);
+                    progressBar.setVisibility(View.VISIBLE);
+                }
+            }
+        }
+    }
+}