Add a collapsible JPanel

Adds a collapsible version of a JPanel, useful in various places

1 files changed, 71 insertions, 0 deletions

diff --git a/base/src/examples/java/bjc/utils/examples/gui/panels/CollapsiblePanelDemo.java b/base/src/examples/java/bjc/utils/examples/gui/panels/CollapsiblePanelDemo.java
new file mode 100644
index 0000000..fed128f
--- /dev/null
+++ b/base/src/examples/java/bjc/utils/examples/gui/panels/CollapsiblePanelDemo.java
@@ -0,0 +1,71 @@
+package bjc.utils.examples.gui.panels;
+
+import java.awt.BorderLayout;
+import java.awt.GridLayout;
+import java.awt.Insets;
+
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.JButton;
+import javax.swing.JCheckBox;
+import javax.swing.JComboBox;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTextField;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+
+import bjc.utils.gui.panels.CollapsiblePanel;
+
+public class CollapsiblePanelDemo {
+	public static void main(String[] args) {
+        SwingUtilities.invokeLater(() -> {
+            try { UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName()); } catch (Exception ignored) {}
+
+            JFrame frame = new JFrame("CollapsiblePanel Demo");
+            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+            frame.setLayout(new BorderLayout());
+
+            JPanel content = new JPanel();
+            content.setLayout(new BoxLayout(content, BoxLayout.Y_AXIS));
+
+            CollapsiblePanel section1 = new CollapsiblePanel("Search Options");
+            // Add some content
+            section1.add(new JLabel("Keyword:"));
+            section1.add(new JTextField(20));
+            section1.add(new JCheckBox("Case sensitive"));
+
+            // Add custom header bits (e.g. a small gear button)
+            JButton gear = new JButton("\u2699"); // ⚙
+            gear.setMargin(new Insets(0, 4, 0, 4));
+            gear.setFocusable(false);
+            section1.addHeaderComponent(gear);
+
+            CollapsiblePanel section2 = new CollapsiblePanel("Advanced Filters", new GridLayout(0, 2, 4, 4));
+            section2.add(new JLabel("From date:"));
+            section2.add(new JTextField(10));
+            section2.add(new JLabel("To date:"));
+            section2.add(new JTextField(10));
+            section2.add(new JLabel("Status:"));
+            section2.add(new JComboBox<>(new String[]{"Any", "Open", "Closed"}));
+            section2.setCollapsed(true); // start collapsed
+
+            // Example: a right-aligned "Reset" button in the header
+            JButton resetBtn = new JButton("Reset");
+            resetBtn.setMargin(new Insets(0, 6, 0, 6));
+            resetBtn.setFocusable(false);
+            section2.setHeaderComponent(resetBtn);
+
+            content.add(section1);
+            content.add(Box.createVerticalStrut(8));
+            content.add(section2);
+
+            frame.add(new JScrollPane(content), BorderLayout.CENTER);
+            frame.setSize(450, 300);
+            frame.setLocationRelativeTo(null);
+            frame.setVisible(true);
+        });
+    }
+}