Added navigation to tab with error on field

src/com/magento/idea/magento2plugin/actions/generation/dialog/AbstractDialog.java

@@ -11,6 +11,7 @@
 import com.magento.idea.magento2plugin.actions.generation.dialog.validator.rule.ValidationRule;
 import com.magento.idea.magento2plugin.bundles.CommonBundle;
 import com.magento.idea.magento2plugin.bundles.ValidatorBundle;
+import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Toolkit;
 import java.lang.reflect.Field;
@@ -26,6 +27,7 @@
 import javax.swing.JComponent;
 import javax.swing.JDialog;
 import javax.swing.JOptionPane;
+import javax.swing.JTabbedPane;
 import javax.swing.JTextArea;
 import javax.swing.JTextField;
 import org.jetbrains.annotations.NotNull;
@@ -41,6 +43,7 @@ public abstract class AbstractDialog extends JDialog {
     private final String errorTitle;
     private final Map<Field, List<ValidationRule>> textFieldValidationRuleMap;
     private final Map<Field, Map<ValidationRule, String>> errorMessageFieldValidationRuleMap;
+    private JTabbedPane tabbedPane;
     private boolean isValidationErrorShown;
     private boolean dialogHasErrors;
 
@@ -86,6 +89,13 @@ protected boolean validateFormFields() {
                 if (value != null && !rule.check(value)) {
                     if (errorMessageFieldValidationRuleMap.containsKey(field)
                             && errorMessageFieldValidationRuleMap.get(field).containsKey(rule)) {
+                        if (!dialogHasErrors) {
+                            final JComponent component = getComponentForField(field);
+
+                            if (component != null && tabbedPane != null) {
+                                navigateToTabWithComponent(component);
+                            }
+                        }
                         dialogHasErrors = true;
                         showErrorMessage(
                                 field,
@@ -106,6 +116,15 @@ protected boolean validateFormFields() {
         return !dialogHasErrors;
     }
 
+    /**
+     * Tabbed pane should be registered to be possible navigate to the tab in which error occurred.
+     *
+     * @param tabbedPane JTabbedPane
+     */
+    protected void registerTabbedPane(final @NotNull JTabbedPane tabbedPane) {
+        this.tabbedPane = tabbedPane;
+    }
+
     /**
      * Show error message for field.
      *
@@ -316,4 +335,46 @@ private JComponent getComponentForField(final @NotNull Field field) {
 
         return null;
     }
+
+    /**
+     * Navigate to tab with specified component.
+     *
+     * @param component JComponent
+     */
+    private void navigateToTabWithComponent(final @NotNull JComponent component) {
+        if (tabbedPane == null) {
+            return;
+        }
+
+        final int index = getParentTabPaneForComponent(component);
+
+        if (index != -1) {
+            tabbedPane.setSelectedIndex(index);
+        }
+    }
+
+    /**
+     * Get parent tab index for component.
+     *
+     * @param component Container
+     *
+     * @return int
+     */
+    private int getParentTabPaneForComponent(final @NotNull Container component) {
+        if (tabbedPane == null) {
+            return -1;
+        }
+        final int parentTabIndex = tabbedPane.indexOfComponent(component);
+
+        if (parentTabIndex != -1) {
+            return parentTabIndex;
+        }
+        final Container parent = component.getParent();
+
+        if (parent == null) {
+            return -1;
+        }
+
+        return getParentTabPaneForComponent(parent);
+    }
 }

src/com/magento/idea/magento2plugin/actions/generation/dialog/NewEntityDialog.java

@@ -251,6 +251,7 @@ protected void textChanged(final @NotNull DocumentEvent event) {
         toggleUiComponentsPanel();
 
         createUiComponent.addItemListener(event -> toggleUiComponentsPanel());
+        registerTabbedPane(tabbedPane1);
     }
 
     /**