I have a JPanel panelOpslog with a GridBagLayout.
On this panel there are 2 Panel. 1 on the top and one on the bottom.
panelSearchOpsLog
---------------------
panelShiftTeamLogging
panelSearchOpsLog is set to grow to the bottom and to the right
panelOpslog = new JPanel();
tabbedPane.addTab("Opslog", null, panelOpslog, null);
GridBagLayout gbl_panelOpslog = new GridBagLayout();
gbl_panelOpslog.columnWidths = new int[]{1155, 0};
gbl_panelOpslog.rowHeights = new int[]{212, 401, 0};
gbl_panelOpslog.columnWeights = new double[]{1.0, Double.MIN_VALUE};
gbl_panelOpslog.rowWeights = new double[]{1.0, 0.0, Double.MIN_VALUE};
panelOpslog.setLayout(gbl_panelOpslog);
....
panelShiftTeamLogging = new JPanel();
GridBagConstraints gbc_panelShiftTeamLogging = new GridBagConstraints();
gbc_panelShiftTeamLogging.fill = GridBagConstraints.BOTH;
gbc_panelShiftTeamLogging.gridx = 0;
gbc_panelShiftTeamLogging.gridy = 1;
panelOpslog.add(panelShiftTeamLogging, gbc_panelShiftTeamLogging);
panelShiftTeamLogging.setLayout(null);
....
panelSearchOpsLog = new JPanel();
panelSearchOpsLog.setFont(new Font("Tahoma", Font.PLAIN, 10));
panelSearchOpsLog.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED, new Color(255, 255, 255), new Color(160, 160, 160)), "Search Opslog", TitledBorder.LEADING, TitledBorder.TOP, null, new Color(0, 0, 0)));
GridBagConstraints gbc_panelSearchOpsLog = new GridBagConstraints();
gbc_panelSearchOpsLog.fill = GridBagConstraints.BOTH;
gbc_panelSearchOpsLog.insets = new Insets(0, 0, 5, 0);
gbc_panelSearchOpsLog.gridx = 0;
gbc_panelSearchOpsLog.gridy = 0;
panelOpslog.add(panelSearchOpsLog, gbc_panelSearchOpsLog);
GridBagLayout gbl_panelSearchOpsLog = new GridBagLayout();
gbl_panelSearchOpsLog.columnWidths = new int[]{129, 0, 0};
gbl_panelSearchOpsLog.rowHeights = new int[]{30, 160, 0};
gbl_panelSearchOpsLog.columnWeights = new double[]{0.0, 1.0, Double.MIN_VALUE};
gbl_panelSearchOpsLog.rowWeights = new double[]{0.0, 1.0, Double.MIN_VALUE};
panelSearchOpsLog.setLayout(gbl_panelSearchOpsLog);
Now I want an option to set panelShiftTeamLogging to invisible to that Panel 1 can use the complete space.
I put this code in an actionlistener from a button. Its hides panelShiftTeamLogging but panelSearchOpsLog is not resized
btnHideShow.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
boolean isVisible = panelShiftTeamLogging.isVisible();
panelShiftTeamLogging.setVisible(!isVisible);
panelOpslog.revalidate();
panelOpslog.repaint();
panelOpslog.getParent().revalidate();
panelOpslog.getParent().repaint();
}
});
PS: I want to stay with GridBagLayout
EDIT: a working example
import java.awt.EventQueue;
import javax.swing.JFrame;
import java.awt.GridBagLayout;
import javax.swing.JPanel;
import java.awt.GridBagConstraints;
import javax.swing.JButton;
import java.awt.Insets;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.JTable;
import javax.swing.JScrollPane;
import javax.swing.table.DefaultTableModel;
public class Test {
private JFrame frame;
private JTabbedPane tabbedPane;
private JPanel panel;
private JPanel panelTop;
private JButton btnHideShow;
private JPanel panelBottom;
private JTextArea textArea;
private JTable table;
private JScrollPane scrollPaneOnToPanel;
private JScrollPane scrollPaneOnBottomPanel;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Test window = new Test();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public Test() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 1002, 533);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.columnWidths = new int[]{988, 0};
gridBagLayout.rowHeights = new int[]{465, 0};
gridBagLayout.columnWeights = new double[]{1.0, Double.MIN_VALUE};
gridBagLayout.rowWeights = new double[]{1.0, Double.MIN_VALUE};
frame.getContentPane().setLayout(gridBagLayout);
tabbedPane = new JTabbedPane(JTabbedPane.TOP);
GridBagConstraints gbc_tabbedPane = new GridBagConstraints();
gbc_tabbedPane.fill = GridBagConstraints.BOTH;
gbc_tabbedPane.gridx = 0;
gbc_tabbedPane.gridy = 0;
frame.getContentPane().add(tabbedPane, gbc_tabbedPane);
panel = new JPanel();
tabbedPane.addTab("New tab", null, panel, null);
GridBagLayout gbl_panel = new GridBagLayout();
gbl_panel.columnWidths = new int[]{983, 0};
gbl_panel.rowHeights = new int[]{189, 206, 0};
gbl_panel.columnWeights = new double[]{1.0, Double.MIN_VALUE};
gbl_panel.rowWeights = new double[]{1.0, 1.0, Double.MIN_VALUE};
panel.setLayout(gbl_panel);
panelTop = new JPanel();
GridBagConstraints gbc_panelTop = new GridBagConstraints();
gbc_panelTop.fill = GridBagConstraints.BOTH;
gbc_panelTop.insets = new Insets(0, 0, 5, 0);
gbc_panelTop.gridx = 0;
gbc_panelTop.gridy = 0;
gbc_panelTop.weighty = 0; // Hovercraft Full Of Eels suggestion
gbc_panelTop.gridheight = 1; // Hovercraft Full Of Eels suggestion
panel.add(panelTop, gbc_panelTop);
GridBagLayout gbl_panelTop = new GridBagLayout();
gbl_panelTop.columnWidths = new int[]{449, 0};
gbl_panelTop.rowHeights = new int[]{21, 0, 0};
gbl_panelTop.columnWeights = new double[]{1.0, Double.MIN_VALUE};
gbl_panelTop.rowWeights = new double[]{0.0, 1.0, Double.MIN_VALUE};
panelTop.setLayout(gbl_panelTop);
btnHideShow = new JButton("Hide / Show the lower panel. The Table should also use the space from the lower panel");
btnHideShow.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
boolean isVisible = panelBottom.isVisible();
panelBottom.setVisible(!isVisible);
panel.revalidate();
panel.repaint();
panel.getParent().revalidate();
panel.getParent().repaint();
}
});
GridBagConstraints gbc_btnHideShow = new GridBagConstraints();
gbc_btnHideShow.insets = new Insets(0, 0, 5, 0);
gbc_btnHideShow.anchor = GridBagConstraints.NORTHWEST;
gbc_btnHideShow.gridx = 0;
gbc_btnHideShow.gridy = 0;
panelTop.add(btnHideShow, gbc_btnHideShow);
scrollPaneOnToPanel = new JScrollPane();
GridBagConstraints gbc_scrollPaneOnToPanel = new GridBagConstraints();
gbc_scrollPaneOnToPanel.fill = GridBagConstraints.BOTH;
gbc_scrollPaneOnToPanel.gridx = 0;
gbc_scrollPaneOnToPanel.gridy = 1;
panelTop.add(scrollPaneOnToPanel, gbc_scrollPaneOnToPanel);
table = new JTable();
String[] columns = {"Column A", "Column B"};
table.setModel(new DefaultTableModel(columns, 60));
scrollPaneOnToPanel.setViewportView(table);
panelBottom = new JPanel();
panelBottom.setLayout(null);
GridBagConstraints gbc_panelBottom = new GridBagConstraints();
gbc_panelBottom.fill = GridBagConstraints.BOTH;
gbc_panelBottom.gridx = 0;
gbc_panelBottom.gridy = 1;
gbc_panelBottom.weighty = 1.0; // Hovercraft Full Of Eels suggestion
panel.add(panelBottom, gbc_panelBottom);
scrollPaneOnBottomPanel = new JScrollPane();
scrollPaneOnBottomPanel.setBounds(0, 0, 973, 233);
textArea = new JTextArea();
scrollPaneOnBottomPanel.setViewportView(textArea);
panelBottom.add(scrollPaneOnBottomPanel);
}
}
Finally I found a solution. The problem was the initial set for the minimal row heigth
int[] rowHeights = {447, 100}; // Initial row heights
The solution is now to change these heigth when I click the button
private void togglePanel() {
if (isMaximized) {
// Maximize upper panel
gbl_mainPanel.rowHeights = new int[]{mainPanel.getHeight(), 0}; // Hide lower panel
} else {
// Restore original layout
gbl_mainPanel.rowHeights = new int[]{mainPanel.getHeight() -100, 100}; // Set original row heights
}
// Apply the new layout settings
mainPanel.setLayout(gbl_mainPanel);
revalidate();
repaint();
isMaximized = !isMaximized;
}
additionally a component listener is required for resizing the frame
// Add ComponentListener to adjust row heights on resize
addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
if (!isMaximized) {
gbl_mainPanel.rowHeights = new int[]{mainPanel.getHeight(), 0}; // Update row heights on resize
} else {
gbl_mainPanel.rowHeights = new int[]{mainPanel.getHeight() -100, 100}; // Update row heights on resize
}
mainPanel.revalidate();
mainPanel.repaint();
}
});
Below you can find the working solution
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
public class Test extends JFrame {
private JPanel upperPanel;
private JPanel lowerPanel;
private boolean isMaximized = true;
private GridBagLayout gbl_mainPanel;
private JPanel mainPanel;
public Test() {
setTitle("TabbedPane Example");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(800, 600);
// Create and set GridBagLayout for mainPanel
gbl_mainPanel = new GridBagLayout();
double[] columnWeights = {1.0};
double[] rowWeights = {1.0, 1.0};
int[] rowHeights = {447, 100}; // Initial row heights
gbl_mainPanel.columnWeights = columnWeights;
gbl_mainPanel.rowWeights = rowWeights;
gbl_mainPanel.rowHeights = rowHeights;
mainPanel = new JPanel(gbl_mainPanel);
// Upper Panel with GridBagLayout
upperPanel = new JPanel(new GridBagLayout());
// Create and add table
String[] columnNames = {"Column 1", "Column 2"};
Object[][] data = new Object[60][2];
for (int i = 0; i < 60; i++) {
data[i][0] = "Row " + (i + 1) + " Col 1";
data[i][1] = "Row " + (i + 1) + " Col 2";
}
JTable table = new JTable(data, columnNames);
JScrollPane tableScrollPane = new JScrollPane(table);
// Create and add button
JButton toggleButton = new JButton("Toggle");
toggleButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
togglePanel();
}
});
// Create separate GridBagConstraints for each component
GridBagConstraints gbcButton = new GridBagConstraints();
gbcButton.fill = GridBagConstraints.HORIZONTAL;
gbcButton.insets = new Insets(5, 5, 5, 5); // Padding around the button
gbcButton.gridy = 0;
gbcButton.gridx = 0;
GridBagConstraints gbcTable = new GridBagConstraints();
gbcTable.fill = GridBagConstraints.BOTH;
gbcTable.weightx = 1.0;
gbcTable.weighty = 1.0;
gbcTable.gridy = 1;
gbcTable.gridx = 0;
// Add components to upperPanel
upperPanel.add(toggleButton, gbcButton);
upperPanel.add(tableScrollPane, gbcTable);
// Lower Panel with Absolute Layout
lowerPanel = new JPanel(null); // Null layout for absolute positioning
JTextArea textAreaLower = new JTextArea();
JScrollPane textAreaScrollPaneLower = new JScrollPane(textAreaLower);
textAreaScrollPaneLower.setBounds(10, 10, 760, 75);
lowerPanel.add(textAreaScrollPaneLower);
GridBagConstraints gbcUpperPanel = new GridBagConstraints();
gbcUpperPanel.fill = GridBagConstraints.BOTH;
gbcUpperPanel.weightx = 1.0;
gbcUpperPanel.weighty = 0.9;
gbcUpperPanel.gridx = 0;
gbcUpperPanel.gridy = 0;
GridBagConstraints gbcLowerPanel = new GridBagConstraints();
gbcLowerPanel.fill = GridBagConstraints.BOTH;
gbcLowerPanel.weightx = 1.0;
gbcLowerPanel.weighty = 0.1;
gbcLowerPanel.gridx = 0;
gbcLowerPanel.gridy = 1;
// Add panels to mainPanel
mainPanel.add(upperPanel, gbcUpperPanel);
mainPanel.add(lowerPanel, gbcLowerPanel);
// Add mainPanel to tabbedPane
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("mainPanel", mainPanel);
getContentPane().add(tabbedPane);
// Add ComponentListener to adjust row heights on resize
addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
if (!isMaximized) {
gbl_mainPanel.rowHeights = new int[]{mainPanel.getHeight(), 0}; // Update row heights on resize
} else {
gbl_mainPanel.rowHeights = new int[]{mainPanel.getHeight() -100, 100}; // Update row heights on resize
}
mainPanel.revalidate();
mainPanel.repaint();
}
});
setVisible(true);
}
private void togglePanel() {
if (isMaximized) {
// Maximize upper panel
gbl_mainPanel.rowHeights = new int[]{mainPanel.getHeight(), 0}; // Hide lower panel
} else {
// Restore original layout
gbl_mainPanel.rowHeights = new int[]{mainPanel.getHeight() -100, 100}; // Set original row heights
}
// Apply the new layout settings
mainPanel.setLayout(gbl_mainPanel);
revalidate();
repaint();
isMaximized = !isMaximized;
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Test();
}
});
}
}