fix issue #520 #520

Author: LesleyWagner

.gitignore

@@ -89,3 +89,7 @@ bin-test
 # dated folders
 /19*
 /20*
+
+# VS Code Java project files
+.project
+.vscode/

app/src/processing/app/contrib/ContributionTab.java

@@ -161,7 +161,8 @@ protected void setLayout() {
       .addGroup(layout.createParallelGroup(GroupLayout.Alignment.CENTER)
                   .addComponent(categoryChooser)
                   .addComponent(filterField))
-      .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
+      // fix for issue #520 https://github.com/processing/processing4/issues/520            
+      .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
       .addGroup(layout.createParallelGroup(GroupLayout.Alignment.CENTER)
                   .addComponent(loaderLabel)
                   .addComponent(listPanel))
@@ -270,6 +271,9 @@ protected void updateCategoryChooser() {
       Set<String> categories = listCategories();
       if (categories.size() == 1 &&
           categories.contains(Contribution.UNKNOWN_CATEGORY)) {
+        // Add dummy item for sizing purpose
+        // fix for issue #520 https://github.com/processing/processing4/issues/520 
+        categoryChooser.addItem("NULL");
         // If no unique categories, hide the category chooser
         categoryChooser.setVisible(false);