macOS large title bar: add NSToolbar to NSWindow

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeMacLibrary.java

@@ -53,4 +53,6 @@ public class FlatNativeMacLibrary
 	}
 
 	public native static boolean setWindowRoundedBorder( Window window, float radius, float borderWidth, int borderColor );
+
+	public native static void setWindowToolbar( Window window );
 }

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/DemoFrame.java

@@ -101,7 +101,7 @@ class DemoFrame
 					setTitle( null );
 
 				// add gap to left side of toolbar
-				toolBar.add( Box.createHorizontalStrut( 70 ), 0 );
+				toolBar.add( Box.createHorizontalStrut( 80 ), 0 );
 			}
 
 			// enable full screen mode for this window (for Java 8 - 10; not necessary for Java 11+)
@@ -903,6 +903,54 @@ class DemoFrame
 		buttonGroup1.add(radioButtonMenuItem3);
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
 
+		backButton.addActionListener( e -> System.out.println( e ) );
+		backButton.addMouseListener( new MouseListener() {
+
+			@Override
+			public void mouseReleased( MouseEvent e ) {
+				// TODO Auto-generated method stub
+				System.out.println( "m release" );
+			}
+
+			@Override
+			public void mousePressed( MouseEvent e ) {
+				// TODO Auto-generated method stub
+				System.out.println( "m press" );
+			}
+
+			@Override
+			public void mouseExited( MouseEvent e ) {
+				// TODO Auto-generated method stub
+				System.out.println( "m exit" );
+			}
+
+			@Override
+			public void mouseEntered( MouseEvent e ) {
+				// TODO Auto-generated method stub
+				System.out.println( "m ent" );
+			}
+
+			@Override
+			public void mouseClicked( MouseEvent e ) {
+				// TODO Auto-generated method stub
+			System.out.println( "m click" );
+			}
+		} );
+		backButton.addMouseMotionListener( new MouseMotionListener() {
+
+			@Override
+			public void mouseMoved( MouseEvent e ) {
+				// TODO Auto-generated method stub
+				System.out.println( "m moved" );
+			}
+
+			@Override
+			public void mouseDragged( MouseEvent e ) {
+				// TODO Auto-generated method stub
+				System.out.println( "m drag" );
+			}
+		} );
+
 		// add "Users" button to menubar
 		FlatButton usersButton = new FlatButton();
 		usersButton.setIcon( new FlatSVGIcon( "com/formdev/flatlaf/demo/icons/users.svg" ) );

flatlaf-demo/src/main/java/com/formdev/flatlaf/demo/FlatLafDemo.java

@@ -27,6 +27,7 @@ import com.formdev.flatlaf.fonts.inter.FlatInterFont;
 import com.formdev.flatlaf.fonts.jetbrains_mono.FlatJetBrainsMonoFont;
 import com.formdev.flatlaf.fonts.roboto.FlatRobotoFont;
 import com.formdev.flatlaf.fonts.roboto_mono.FlatRobotoMonoFont;
+import com.formdev.flatlaf.ui.FlatNativeMacLibrary;
 import com.formdev.flatlaf.util.SystemInfo;
 
 /**
@@ -117,6 +118,10 @@ public class FlatLafDemo
 			// show frame
 			frame.pack();
 			frame.setLocationRelativeTo( null );
+			if( SystemInfo.isMacOS && FlatNativeMacLibrary.isLoaded() ) {
+				// TODO use client property
+				FlatNativeMacLibrary.setWindowToolbar( frame );
+			}
 			frame.setVisible( true );
 		} );
 	}

flatlaf-natives/flatlaf-natives-macos/src/main/headers/com_formdev_flatlaf_ui_FlatNativeMacLibrary.h

@@ -15,6 +15,14 @@ extern "C" {
 JNIEXPORT jboolean JNICALL Java_com_formdev_flatlaf_ui_FlatNativeMacLibrary_setWindowRoundedBorder
   (JNIEnv *, jclass, jobject, jfloat, jfloat, jint);
 
+/*
+ * Class:     com_formdev_flatlaf_ui_FlatNativeMacLibrary
+ * Method:    setWindowToolbar
+ * Signature: (Ljava/awt/Window;)V
+ */
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatNativeMacLibrary_setWindowToolbar
+  (JNIEnv *, jclass, jobject);
+
 #ifdef __cplusplus
 }
 #endif

flatlaf-natives/flatlaf-natives-macos/src/main/objcpp/MacWindow.mm

@@ -87,3 +87,27 @@ JNIEXPORT jboolean JNICALL Java_com_formdev_flatlaf_ui_FlatNativeMacLibrary_setW
 	JNI_COCOA_EXIT()
 	return FALSE;
 }
+
+extern "C"
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatNativeMacLibrary_setWindowToolbar
+	( JNIEnv* env, jclass cls, jobject window )
+{
+	JNI_COCOA_ENTER()
+
+	NSWindow* nsWindow = getNSWindow( env, cls, window );
+	if( nsWindow == NULL )
+		return;
+
+	[FlatJNFRunLoop performOnMainThreadWaiting:NO withBlock:^(){
+		NSLog( @"\n%@\n\n", [nsWindow.contentView.superview _subtreeDescription] );
+
+		NSToolbar* toolbar = [NSToolbar new];
+		nsWindow.toolbar = toolbar;
+
+		// TODO handle fullscreen
+
+		NSLog( @"\n%@\n\n", [nsWindow.contentView.superview _subtreeDescription] );
+	}];
+
+	JNI_COCOA_EXIT()
+}