Enabled tabs to be rearranged. Did not add functionality for a tab to…

… be dropped out. We could possibly add it at a later time, also add a setting to toggle it on/off? Recommend to gather feedback to see if that is something wanted.

src/main/java/the/bytecode/club/bytecodeviewer/BytecodeViewer.java

@@ -130,7 +130,7 @@
 public class BytecodeViewer
 {
     //TODO fix this for tab dragging & better tab controls
-    public static boolean EXPERIMENTAL_TAB_CODE = false;
+    public static boolean EXPERIMENTAL_TAB_CODE = true;
 
     //the launch args called on BCV
     public static String[] launchArgs;

src/main/java/the/bytecode/club/bytecodeviewer/gui/resourceviewer/CloseButtonComponent.java

@@ -0,0 +1,39 @@
+package the.bytecode.club.bytecodeviewer.gui.resourceviewer;
+
+import com.android.tools.r8.internal.Cl;
+import com.github.weisj.darklaf.components.CloseButton;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class CloseButtonComponent extends JPanel {
+
+	private final JTabbedPane pane;
+
+	public CloseButtonComponent(final JTabbedPane pane) {
+		super(new FlowLayout(FlowLayout.LEFT, 0, 0));
+		if (pane == null) {
+			throw new NullPointerException("TabbedPane is null");
+		}
+
+		this.pane = pane;
+		setOpaque(false);
+		JLabel label = new JLabel() {
+			public String getText() {
+				int i = pane.indexOfTabComponent(CloseButtonComponent.this);
+				if (i != -1) {
+					return pane.getTitleAt(i);
+				}
+
+				return null;
+			}
+		};
+
+		add(label);
+		label.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 5));
+		JButton button = new CloseButton();
+		add(button);
+		setBorder(BorderFactory.createEmptyBorder(2, 0, 0, 0));
+	}
+
+}