Theme Editor: preview improvements:

- added JToolBar, JProgressBar with string painted, JDesktopPane and JInternalFrame
- placed text components side-by-side to save vertical space
- changed button texts and removed tooltips
- fixed painting of table cell focus border
- added missing add.svg

flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemePreview.java

@@ -20,6 +20,7 @@ package com.formdev.flatlaf.themeeditor;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.HierarchyEvent;
+import java.beans.PropertyVetoException;
 import java.util.Map;
 import java.util.WeakHashMap;
 import java.util.function.Function;
@@ -68,6 +69,20 @@ class FlatThemePreview
 		list1.setSelectedIndex( 1 );
 		tree1.setSelectionRow( 1 );
 		table1.setRowSelectionInterval( 1, 1 );
+		table1.uiDefaultsGetter = this::getUIDefaultProperty;
+
+		EventQueue.invokeLater( () -> {
+			int width = desktopPane1.getWidth();
+			int height = desktopPane1.getHeight() / 2;
+			internalFrame1.setBounds( 0, 0, width, height );
+			internalFrame2.setBounds( 0, height, width, height );
+
+			try {
+				internalFrame1.setSelected( true );
+			} catch( PropertyVetoException ex ) {
+				// ignore
+			}
+		} );
 
 		// timer used for delayed preview updates
 		timer = new Timer( 300, e -> update() );
@@ -259,6 +274,22 @@ class FlatThemePreview
 	private void changeProgress() {
 		int value = slider3.getValue();
 		progressBar1.setValue( value );
+		progressBar2.setValue( value );
+	}
+
+	private Object toolbarCons;
+
+	@Override
+	protected void addImpl( Component comp, Object constraints, int index ) {
+		// if floating toolbar window is closed, then place toolbar at original location
+		if( comp == toolBar1 ) {
+			if( toolbarCons == null )
+				toolbarCons = constraints;
+			else if( comp.getParent() == null && toolbarCons != null )
+				constraints = toolbarCons;
+		}
+
+		super.addImpl( comp, constraints, index );
 	}
 
 	private void initComponents() {
@@ -294,17 +325,13 @@ class FlatThemePreview
 		spinner1 = new JSpinner();
 		textFieldLabel = new JLabel();
 		textField1 = new FlatTextField();
-		formattedTextFieldLabel = new JLabel();
 		formattedTextField1 = new FlatFormattedTextField();
-		passwordFieldLabel = new JLabel();
 		passwordField1 = new FlatPasswordField();
 		textAreaLabel = new JLabel();
 		scrollPane1 = new JScrollPane();
 		textArea1 = new JTextArea();
-		editorPaneLabel = new JLabel();
 		scrollPane5 = new JScrollPane();
 		editorPane1 = new JEditorPane();
-		textPaneLabel = new JLabel();
 		scrollPane9 = new JScrollPane();
 		textPane1 = new JTextPane();
 		menuBarLabel = new JLabel();
@@ -334,8 +361,15 @@ class FlatThemePreview
 		slider3 = new JSlider();
 		progressBarLabel = new JLabel();
 		progressBar1 = new FlatProgressBar();
+		progressBar2 = new FlatProgressBar();
 		toolTipLabel = new JLabel();
 		toolTip1 = new JToolTip();
+		toolBarLabel = new JLabel();
+		toolBar1 = new JToolBar();
+		button4 = new JButton();
+		button6 = new JButton();
+		button7 = new JToggleButton();
+		button8 = new JToggleButton();
 		tabbedPaneLabel = new JLabel();
 		tabbedPane1 = new FlatThemePreview.PreviewTabbedPane();
 		listTreeLabel = new JLabel();
@@ -345,7 +379,11 @@ class FlatThemePreview
 		tree1 = new JTree();
 		tableLabel = new JLabel();
 		scrollPane4 = new JScrollPane();
-		table1 = new JTable();
+		table1 = new FlatThemePreview.PreviewTable();
+		internalFrameLabel = new JLabel();
+		desktopPane1 = new JDesktopPane();
+		internalFrame1 = new JInternalFrame();
+		internalFrame2 = new JInternalFrame();
 
 		//======== this ========
 		setLayout(new MigLayout(
@@ -380,6 +418,7 @@ class FlatThemePreview
 			"[]" +
 			"[]" +
 			"[]" +
+			"[100,fill]" +
 			"[grow]"));
 
 		//---- previewSeparator ----
@@ -417,12 +456,11 @@ class FlatThemePreview
 		add(buttonLabel, "cell 0 3");
 
 		//---- button1 ----
-		button1.setText("Apply");
+		button1.setText("OK");
-		button1.setToolTipText("This button is enabled.");
 		add(button1, "cell 1 3,alignx left,growx 0");
 
 		//---- testDefaultButton1 ----
-		testDefaultButton1.setText("OK");
+		testDefaultButton1.setText("Default");
 		add(testDefaultButton1, "cell 1 3");
 
 		//---- helpButton ----
@@ -436,7 +474,6 @@ class FlatThemePreview
 
 		//---- toggleButton1 ----
 		toggleButton1.setText("Unselected");
-		toggleButton1.setToolTipText("LOOOOOOOOOOOOOONG TEXT");
 		add(toggleButton1, "cell 1 4,alignx left,growx 0");
 
 		//---- toggleButton3 ----
@@ -495,7 +532,7 @@ class FlatThemePreview
 		}));
 		comboBox1.setMaximumRowCount(6);
 		comboBox1.setPlaceholderText("placeholder text");
-		add(comboBox1, "cell 1 7");
+		add(comboBox1, "cell 1 7,width 50");
 
 		//---- comboBox3 ----
 		comboBox3.setModel(new DefaultComboBoxModel<>(new String[] {
@@ -513,7 +550,7 @@ class FlatThemePreview
 			"kkk"
 		}));
 		comboBox3.setMaximumRowCount(6);
-		add(comboBox3, "cell 1 7");
+		add(comboBox3, "cell 1 7,width 50");
 
 		//---- spinnerLabel ----
 		spinnerLabel.setText("JSpinner:");
@@ -521,35 +558,27 @@ class FlatThemePreview
 		add(spinner1, "cell 1 8");
 
 		//---- textFieldLabel ----
-		textFieldLabel.setText("JTextField:");
+		textFieldLabel.setText("<html>JTextField:<br>JFormattedTextF.:<br>JPasswordField:</html>");
-		add(textFieldLabel, "cell 0 9");
+		add(textFieldLabel, "cell 0 9 1 2");
 
 		//---- textField1 ----
 		textField1.setText("Some Text");
 		textField1.setPlaceholderText("placeholder text");
 		add(textField1, "cell 1 9");
 
-		//---- formattedTextFieldLabel ----
-		formattedTextFieldLabel.setText("JFormattedTextF.:");
-		add(formattedTextFieldLabel, "cell 0 10");
-
 		//---- formattedTextField1 ----
 		formattedTextField1.setText("Some Text");
 		formattedTextField1.setPlaceholderText("placeholder text");
-		add(formattedTextField1, "cell 1 10");
+		add(formattedTextField1, "cell 1 10,width 50");
-
-		//---- passwordFieldLabel ----
-		passwordFieldLabel.setText("JPasswordField:");
-		add(passwordFieldLabel, "cell 0 11");
 
 		//---- passwordField1 ----
 		passwordField1.setText("Some Text");
 		passwordField1.setPlaceholderText("placeholder text");
-		add(passwordField1, "cell 1 11");
+		add(passwordField1, "cell 1 10,width 50");
 
 		//---- textAreaLabel ----
-		textAreaLabel.setText("JTextArea:");
+		textAreaLabel.setText("<html>JTextArea:<br><br>JEditorPane:<br>JTextPane:</html>");
-		add(textAreaLabel, "cell 0 12");
+		add(textAreaLabel, "cell 0 11 1 2");
 
 		//======== scrollPane1 ========
 		{
@@ -561,11 +590,7 @@ class FlatThemePreview
 			textArea1.setRows(2);
 			scrollPane1.setViewportView(textArea1);
 		}
-		add(scrollPane1, "cell 1 12");
+		add(scrollPane1, "cell 1 11");
-
-		//---- editorPaneLabel ----
-		editorPaneLabel.setText("JEditorPane");
-		add(editorPaneLabel, "cell 0 13");
 
 		//======== scrollPane5 ========
 		{
@@ -576,11 +601,7 @@ class FlatThemePreview
 			editorPane1.setText("Some Text");
 			scrollPane5.setViewportView(editorPane1);
 		}
-		add(scrollPane5, "cell 1 13");
+		add(scrollPane5, "cell 1 12,width 50");
-
-		//---- textPaneLabel ----
-		textPaneLabel.setText("JTextPane:");
-		add(textPaneLabel, "cell 0 14");
 
 		//======== scrollPane9 ========
 		{
@@ -591,11 +612,11 @@ class FlatThemePreview
 			textPane1.setText("Some Text");
 			scrollPane9.setViewportView(textPane1);
 		}
-		add(scrollPane9, "cell 1 14");
+		add(scrollPane9, "cell 1 12,width 50");
 
 		//---- menuBarLabel ----
 		menuBarLabel.setText("JMenuBar:");
-		add(menuBarLabel, "cell 0 15");
+		add(menuBarLabel, "cell 0 13");
 
 		//======== menuBar1 ========
 		{
@@ -673,33 +694,33 @@ class FlatThemePreview
 			}
 			menuBar1.add(menu3);
 		}
-		add(menuBar1, "cell 1 15");
+		add(menuBar1, "cell 1 13");
 
 		//---- scrollBarLabel ----
 		scrollBarLabel.setText("JScrollBar:");
-		add(scrollBarLabel, "cell 0 16");
+		add(scrollBarLabel, "cell 0 14");
 
 		//---- scrollBar1 ----
 		scrollBar1.setOrientation(Adjustable.HORIZONTAL);
-		add(scrollBar1, "cell 1 16");
+		add(scrollBar1, "cell 1 14");
 
 		//---- scrollBar5 ----
 		scrollBar5.setOrientation(Adjustable.HORIZONTAL);
 		scrollBar5.setShowButtons(true);
-		add(scrollBar5, "cell 1 17");
+		add(scrollBar5, "cell 1 15");
 
 		//---- separatorLabel ----
 		separatorLabel.setText("JSeparator:");
-		add(separatorLabel, "cell 0 18");
+		add(separatorLabel, "cell 0 16");
-		add(separator1, "cell 1 18");
+		add(separator1, "cell 1 16");
 
 		//---- sliderLabel ----
 		sliderLabel.setText("JSlider:");
-		add(sliderLabel, "cell 0 19");
+		add(sliderLabel, "cell 0 17");
 
 		//---- slider1 ----
 		slider1.setValue(30);
-		add(slider1, "cell 1 19");
+		add(slider1, "cell 1 17");
 
 		//---- slider3 ----
 		slider3.setMinorTickSpacing(10);
@@ -708,23 +729,55 @@ class FlatThemePreview
 		slider3.setPaintLabels(true);
 		slider3.setValue(30);
 		slider3.addChangeListener(e -> changeProgress());
-		add(slider3, "cell 1 20");
+		add(slider3, "cell 1 18");
 
 		//---- progressBarLabel ----
 		progressBarLabel.setText("JProgressBar:");
-		add(progressBarLabel, "cell 0 21");
+		add(progressBarLabel, "cell 0 19");
 
 		//---- progressBar1 ----
 		progressBar1.setValue(60);
-		add(progressBar1, "cell 1 21");
+		add(progressBar1, "cell 1 19");
+
+		//---- progressBar2 ----
+		progressBar2.setValue(50);
+		progressBar2.setStringPainted(true);
+		add(progressBar2, "cell 1 20");
 
 		//---- toolTipLabel ----
 		toolTipLabel.setText("JToolTip:");
-		add(toolTipLabel, "cell 0 22");
+		add(toolTipLabel, "cell 0 21");
 
 		//---- toolTip1 ----
 		toolTip1.setTipText("Some text in tool tip.");
-		add(toolTip1, "cell 1 22,alignx left,growx 0");
+		add(toolTip1, "cell 1 21,alignx left,growx 0");
+
+		//---- toolBarLabel ----
+		toolBarLabel.setText("JToolBar:");
+		add(toolBarLabel, "cell 0 22");
+
+		//======== toolBar1 ========
+		{
+
+			//---- button4 ----
+			button4.setIcon(UIManager.getIcon("Tree.closedIcon"));
+			toolBar1.add(button4);
+
+			//---- button6 ----
+			button6.setIcon(UIManager.getIcon("Tree.openIcon"));
+			toolBar1.add(button6);
+			toolBar1.addSeparator();
+
+			//---- button7 ----
+			button7.setIcon(UIManager.getIcon("Tree.leafIcon"));
+			toolBar1.add(button7);
+
+			//---- button8 ----
+			button8.setIcon(UIManager.getIcon("Tree.leafIcon"));
+			button8.setSelected(true);
+			toolBar1.add(button8);
+		}
+		add(toolBar1, "cell 1 22");
 
 		//---- tabbedPaneLabel ----
 		tabbedPaneLabel.setText("JTabbedPane:");
@@ -791,6 +844,43 @@ class FlatThemePreview
 		}
 		add(scrollPane4, "cell 1 25,height 70");
 
+		//---- internalFrameLabel ----
+		internalFrameLabel.setText("<html>JDesktopPane:<br>JInternalFrame:</html>");
+		add(internalFrameLabel, "cell 0 26,aligny top,growy 0");
+
+		//======== desktopPane1 ========
+		{
+
+			//======== internalFrame1 ========
+			{
+				internalFrame1.setVisible(true);
+				internalFrame1.setTitle("Active");
+				internalFrame1.setClosable(true);
+				internalFrame1.setMaximizable(true);
+				internalFrame1.setIconifiable(true);
+				internalFrame1.setResizable(true);
+				Container internalFrame1ContentPane = internalFrame1.getContentPane();
+				internalFrame1ContentPane.setLayout(new BorderLayout());
+			}
+			desktopPane1.add(internalFrame1, JLayeredPane.DEFAULT_LAYER);
+			internalFrame1.setBounds(new Rectangle(new Point(5, 5), internalFrame1.getPreferredSize()));
+
+			//======== internalFrame2 ========
+			{
+				internalFrame2.setVisible(true);
+				internalFrame2.setClosable(true);
+				internalFrame2.setIconifiable(true);
+				internalFrame2.setMaximizable(true);
+				internalFrame2.setResizable(true);
+				internalFrame2.setTitle("Inactive");
+				Container internalFrame2ContentPane = internalFrame2.getContentPane();
+				internalFrame2ContentPane.setLayout(new BorderLayout());
+			}
+			desktopPane1.add(internalFrame2, JLayeredPane.DEFAULT_LAYER);
+			internalFrame2.setBounds(new Rectangle(new Point(5, 50), internalFrame2.getPreferredSize()));
+		}
+		add(desktopPane1, "cell 1 26");
+
 		//---- buttonGroup1 ----
 		ButtonGroup buttonGroup1 = new ButtonGroup();
 		buttonGroup1.add(radioButton1);
@@ -835,17 +925,13 @@ class FlatThemePreview
 	private JSpinner spinner1;
 	private JLabel textFieldLabel;
 	private FlatTextField textField1;
-	private JLabel formattedTextFieldLabel;
 	private FlatFormattedTextField formattedTextField1;
-	private JLabel passwordFieldLabel;
 	private FlatPasswordField passwordField1;
 	private JLabel textAreaLabel;
 	private JScrollPane scrollPane1;
 	private JTextArea textArea1;
-	private JLabel editorPaneLabel;
 	private JScrollPane scrollPane5;
 	private JEditorPane editorPane1;
-	private JLabel textPaneLabel;
 	private JScrollPane scrollPane9;
 	private JTextPane textPane1;
 	private JLabel menuBarLabel;
@@ -875,8 +961,15 @@ class FlatThemePreview
 	private JSlider slider3;
 	private JLabel progressBarLabel;
 	private FlatProgressBar progressBar1;
+	private FlatProgressBar progressBar2;
 	private JLabel toolTipLabel;
 	private JToolTip toolTip1;
+	private JLabel toolBarLabel;
+	private JToolBar toolBar1;
+	private JButton button4;
+	private JButton button6;
+	private JToggleButton button7;
+	private JToggleButton button8;
 	private JLabel tabbedPaneLabel;
 	private FlatThemePreview.PreviewTabbedPane tabbedPane1;
 	private JLabel listTreeLabel;
@@ -886,7 +979,11 @@ class FlatThemePreview
 	private JTree tree1;
 	private JLabel tableLabel;
 	private JScrollPane scrollPane4;
-	private JTable table1;
+	private FlatThemePreview.PreviewTable table1;
+	private JLabel internalFrameLabel;
+	private JDesktopPane desktopPane1;
+	private JInternalFrame internalFrame1;
+	private JInternalFrame internalFrame2;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables
 
 	//---- class PreviewDefaultButton -----------------------------------------
@@ -936,10 +1033,27 @@ class FlatThemePreview
 		{
 			@Override
 			public void actionPerformed( ActionEvent e ) {
+				// needed for "more tabs" popup creation
 				FlatLaf.runWithUIDefaultsGetter( uiDefaultsGetter, () -> {
 					super.actionPerformed( e );
 				} );
 			}
 		}
 	}
+
+	//---- class PreviewTable -------------------------------------------------
+
+	private static class PreviewTable
+		extends JTable
+	{
+		Function<Object, Object> uiDefaultsGetter;
+
+		@Override
+		public void paint( Graphics g ) {
+			// needed for DefaultTableCellRenderer
+			FlatLaf.runWithUIDefaultsGetter( uiDefaultsGetter, () -> {
+				super.paint( g );
+			} );
+		}
+	}
 }

flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemePreview.jfd

@@ -6,7 +6,7 @@ new FormModel {
 		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "insets dialog,hidemode 3"
 			"$columnConstraints": "[fill][130,fill]"
-			"$rowConstraints": "[]0[]unrel[][][][][][][][][][][][][][][][][][][][][][][][][grow]"
+			"$rowConstraints": "[]0[]unrel[][][][][][][][][][][][][][][][][][][][][][][][][100,fill][grow]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JSeparator" ) {
@@ -63,14 +63,13 @@ new FormModel {
 			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "button1"
-				"text": "Apply"
+				"text": "OK"
-				"toolTipText": "This button is enabled."
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 3,alignx left,growx 0"
 			} )
 			add( new FormComponent( "com.formdev.flatlaf.themeeditor.FlatThemePreview$PreviewDefaultButton" ) {
 				name: "testDefaultButton1"
-				"text": "OK"
+				"text": "Default"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 3"
 			} )
@@ -94,7 +93,6 @@ new FormModel {
 			add( new FormComponent( "javax.swing.JToggleButton" ) {
 				name: "toggleButton1"
 				"text": "Unselected"
-				"toolTipText": "LOOOOOOOOOOOOOONG TEXT"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 4,alignx left,growx 0"
 			} )
@@ -190,7 +188,7 @@ new FormModel {
 					"JavaCodeGenerator.typeParameters": "String"
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 7"
+				"value": "cell 1 7,width 50"
 			} )
 			add( new FormComponent( "javax.swing.JComboBox" ) {
 				name: "comboBox3"
@@ -211,7 +209,7 @@ new FormModel {
 				}
 				"maximumRowCount": 6
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 7"
+				"value": "cell 1 7,width 50"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "spinnerLabel"
@@ -226,9 +224,9 @@ new FormModel {
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "textFieldLabel"
-				"text": "JTextField:"
+				"text": "<html>JTextField:<br>JFormattedTextF.:<br>JPasswordField:</html>"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 9"
+				"value": "cell 0 9 1 2"
 			} )
 			add( new FormComponent( "com.formdev.flatlaf.extras.components.FlatTextField" ) {
 				name: "textField1"
@@ -240,37 +238,25 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 9"
 			} )
-			add( new FormComponent( "javax.swing.JLabel" ) {
-				name: "formattedTextFieldLabel"
-				"text": "JFormattedTextF.:"
-			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 10"
-			} )
 			add( new FormComponent( "com.formdev.flatlaf.extras.components.FlatFormattedTextField" ) {
 				name: "formattedTextField1"
 				"text": "Some Text"
 				"placeholderText": "placeholder text"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 10"
+				"value": "cell 1 10,width 50"
-			} )
-			add( new FormComponent( "javax.swing.JLabel" ) {
-				name: "passwordFieldLabel"
-				"text": "JPasswordField:"
-			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 11"
 			} )
 			add( new FormComponent( "com.formdev.flatlaf.extras.components.FlatPasswordField" ) {
 				name: "passwordField1"
 				"text": "Some Text"
 				"placeholderText": "placeholder text"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 11"
+				"value": "cell 1 10,width 50"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "textAreaLabel"
-				"text": "JTextArea:"
+				"text": "<html>JTextArea:<br><br>JEditorPane:<br>JTextPane:</html>"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 12"
+				"value": "cell 0 11 1 2"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane1"
@@ -282,13 +268,7 @@ new FormModel {
 					"rows": 2
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 12"
+				"value": "cell 1 11"
-			} )
-			add( new FormComponent( "javax.swing.JLabel" ) {
-				name: "editorPaneLabel"
-				"text": "JEditorPane"
-			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 13"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane5"
@@ -299,13 +279,7 @@ new FormModel {
 					"text": "Some Text"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 13"
+				"value": "cell 1 12,width 50"
-			} )
-			add( new FormComponent( "javax.swing.JLabel" ) {
-				name: "textPaneLabel"
-				"text": "JTextPane:"
-			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 14"
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane9"
@@ -316,13 +290,13 @@ new FormModel {
 					"text": "Some Text"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 14"
+				"value": "cell 1 12,width 50"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "menuBarLabel"
 				"text": "JMenuBar:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 15"
+				"value": "cell 0 13"
 			} )
 			add( new FormContainer( "javax.swing.JMenuBar", new FormLayoutManager( class javax.swing.JMenuBar ) ) {
 				name: "menuBar1"
@@ -400,43 +374,43 @@ new FormModel {
 					} )
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 15"
+				"value": "cell 1 13"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "scrollBarLabel"
 				"text": "JScrollBar:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 16"
+				"value": "cell 0 14"
 			} )
 			add( new FormComponent( "javax.swing.JScrollBar" ) {
 				name: "scrollBar1"
 				"orientation": 0
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 16"
+				"value": "cell 1 14"
 			} )
 			add( new FormComponent( "com.formdev.flatlaf.extras.components.FlatScrollBar" ) {
 				name: "scrollBar5"
 				"orientation": 0
 				"showButtons": true
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 17"
+				"value": "cell 1 15"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "separatorLabel"
 				"text": "JSeparator:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 18"
+				"value": "cell 0 16"
 			} )
 			add( new FormComponent( "javax.swing.JSeparator" ) {
 				name: "separator1"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 18"
+				"value": "cell 1 16"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "sliderLabel"
 				"text": "JSlider:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 19"
+				"value": "cell 0 17"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider1"
@@ -445,7 +419,7 @@ new FormModel {
 					"JavaCodeGenerator.variableLocal": false
 				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 19"
+				"value": "cell 1 17"
 			} )
 			add( new FormComponent( "javax.swing.JSlider" ) {
 				name: "slider3"
@@ -459,34 +433,69 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "javax.swing.event.ChangeListener", "stateChanged", "changeProgress", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 20"
+				"value": "cell 1 18"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "progressBarLabel"
 				"text": "JProgressBar:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 21"
+				"value": "cell 0 19"
 			} )
 			add( new FormComponent( "com.formdev.flatlaf.extras.components.FlatProgressBar" ) {
 				name: "progressBar1"
 				"value": 60
-				auxiliary() {
-					"JavaCodeGenerator.variableLocal": false
-				}
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 21"
+				"value": "cell 1 19"
+			} )
+			add( new FormComponent( "com.formdev.flatlaf.extras.components.FlatProgressBar" ) {
+				name: "progressBar2"
+				"value": 50
+				"stringPainted": true
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 20"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "toolTipLabel"
 				"text": "JToolTip:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 22"
+				"value": "cell 0 21"
 			} )
 			add( new FormComponent( "javax.swing.JToolTip" ) {
 				name: "toolTip1"
 				"tipText": "Some text in tool tip."
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 22,alignx left,growx 0"
+				"value": "cell 1 21,alignx left,growx 0"
+			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "toolBarLabel"
+				"text": "JToolBar:"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 22"
+			} )
+			add( new FormContainer( "javax.swing.JToolBar", new FormLayoutManager( class javax.swing.JToolBar ) ) {
+				name: "toolBar1"
+				add( new FormComponent( "javax.swing.JButton" ) {
+					name: "button4"
+					"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.closedIcon" )
+				} )
+				add( new FormComponent( "javax.swing.JButton" ) {
+					name: "button6"
+					"icon": new com.jformdesigner.model.SwingIcon( 2, "Tree.openIcon" )
+				} )
+				add( new FormComponent( "javax.swing.JToolBar$Separator" ) {
+					name: "separator4"
+				} )
+				add( new FormComponent( "javax.swing.JToggleButton" ) {
+					name: "button7"
+					"icon": &SwingIcon0 new com.jformdesigner.model.SwingIcon( 2, "Tree.leafIcon" )
+				} )
+				add( new FormComponent( "javax.swing.JToggleButton" ) {
+					name: "button8"
+					"icon": #SwingIcon0
+					"selected": true
+				} )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 22"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "tabbedPaneLabel"
@@ -544,7 +553,7 @@ new FormModel {
 			} )
 			add( new FormContainer( "javax.swing.JScrollPane", new FormLayoutManager( class javax.swing.JScrollPane ) ) {
 				name: "scrollPane4"
-				add( new FormComponent( "javax.swing.JTable" ) {
+				add( new FormComponent( "com.formdev.flatlaf.themeeditor.FlatThemePreview$PreviewTable" ) {
 					name: "table1"
 					"model": new com.jformdesigner.model.SwingTableModel( new java.util.Vector {
 						add( new java.util.Vector {
@@ -572,19 +581,54 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 25,height 70"
 			} )
+			add( new FormComponent( "javax.swing.JLabel" ) {
+				name: "internalFrameLabel"
+				"text": "<html>JDesktopPane:<br>JInternalFrame:</html>"
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 26,aligny top,growy 0"
+			} )
+			add( new FormContainer( "javax.swing.JDesktopPane", new FormLayoutManager( class javax.swing.JDesktopPane ) ) {
+				name: "desktopPane1"
+				add( new FormContainer( "javax.swing.JInternalFrame", new FormLayoutManager( class java.awt.BorderLayout ) ) {
+					name: "internalFrame1"
+					"visible": true
+					"title": "Active"
+					"closable": true
+					"maximizable": true
+					"iconifiable": true
+					"resizable": true
+				}, new FormLayoutConstraints( null ) {
+					"x": 5
+					"y": 5
+				} )
+				add( new FormContainer( "javax.swing.JInternalFrame", new FormLayoutManager( class java.awt.BorderLayout ) ) {
+					name: "internalFrame2"
+					"visible": true
+					"closable": true
+					"iconifiable": true
+					"maximizable": true
+					"resizable": true
+					"title": "Inactive"
+				}, new FormLayoutConstraints( null ) {
+					"x": 5
+					"y": 50
+				} )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 26"
+			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 400, 915 )
+			"size": new java.awt.Dimension( 400, 1070 )
 		} )
 		add( new FormNonVisual( "javax.swing.ButtonGroup" ) {
 			name: "buttonGroup1"
 		}, new FormLayoutConstraints( null ) {
-			"location": new java.awt.Point( 0, 955 )
+			"location": new java.awt.Point( 0, 1095 )
 		} )
 		add( new FormNonVisual( "javax.swing.ButtonGroup" ) {
 			name: "buttonGroup2"
 		}, new FormLayoutConstraints( null ) {
-			"location": new java.awt.Point( 0, 1007 )
+			"location": new java.awt.Point( 0, 1145 )
 		} )
 	}
 }

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/icons/add.svg

@@ -0,0 +1,7 @@
+<!-- Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+  <g fill="none" fill-rule="evenodd">
+    <rect width="2" height="10" x="7" y="3" fill="#6E6E6E"/>
+    <rect width="2" height="10" x="7" y="3" fill="#6E6E6E" transform="rotate(90 8 8)"/>
+  </g>
+</svg>