Minor improvement for mod elements list D&D logic

src/main/java/net/mcreator/ui/component/JSelectableListMouseListenerWithDND.java

@@ -29,13 +29,14 @@
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.InputEvent;
+import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.awt.geom.Path2D;
 import java.util.Arrays;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
-class JSelectableListMouseListenerWithDND<T> extends MousePressListener {
+class JSelectableListMouseListenerWithDND<T> extends MouseAdapter {
 
  @Nullable private Point srcPoint = new Point(); // when null, we are in dnd
 
@@ -60,6 +61,7 @@ public void stopDNDAction() {
  list.setCursor(null);
  if (list.additionalDNDComponent != null)
  list.additionalDNDComponent.setCursor(null);
+ selection = null;
  finalDNDselection = null;
  }
 
@@ -121,8 +123,6 @@ public void stopDNDAction() {
  System.arraycopy(curr, 0, indices, selNew.length, curr.length);
  list.setSelectedIndices(indices);
  list.repaint();
-
- selection = indices;
  }
  }
 
@@ -146,19 +146,15 @@ public void stopDNDAction() {
  }
 
  stopDNDAction();
+ selection = list.getSelectedIndices();
  }
  }
 
- @Override public void pressFiltered(MouseEvent e, int clicks) {
- if (clicks == 2 && list.dndCustom) {
+ @Override public void mousePressed(MouseEvent e) {
+ if (list.dndCustom && selection != null && Arrays.stream(selection)
+ .anyMatch(i -> list.getCellBounds(i, i).contains(e.getPoint()))) {
  srcPoint = null; // Initiate DND action
- } else if (clicks == 1 && list.dndCustom) {
- if ((e.getModifiersEx() & InputEvent.SHIFT_DOWN_MASK) != 0) {
- selection = list.getSelectedIndices();
- } else {
- selection = null; // If only one click, reset the DND selection candidates
- }
- } else if (clicks == 0) {
+ } else {
  int index = list.locationToIndex(e.getPoint());
  Rectangle rect = list.getCellBounds(index, index);
  if (rect != null && rect.contains(e.getPoint())) {
@@ -171,7 +167,7 @@ public void stopDNDAction() {
  } else {
  list.setFocusable(false);
  }
- srcPoint = new Point();
+ srcPoint = new Point(); // Enter selection mode
  srcPoint.setLocation(e.getPoint());
  list.repaint();
  }

src/main/java/net/mcreator/ui/workspace/WorkspacePanel.java

@@ -873,6 +873,8 @@ public void switchFolder(FolderElement switchTo) {
  search.setText(null); // clear the search bar
  currentFolder = switchTo;
 
+ list.cancelDND();
+
  sectionTabs.get("mods").reloadElements();
 
  // reload breadcrumb