折叠面板可以用作空间上合理利用,可以随心所欲展开喜欢的内容,收起不喜欢的内容.
比如在idea编辑器中通过alt+4唤醒运行日志,再次alt+4可以隐藏.
在h5中,可以通过很简单的display属性实现,
import cn.hutool.core.util.RandomUtil; import com.formdev.flatlaf.FlatLightLaf; import com.mynote.core.ui.BorderBuilder; import com.mynote.core.ui.ColorBuilder; import com.mynote.core.util.FrameUtil; import com.mynote.core.view.Row; import com.mynote.example.demo.AbstractDefaultPanel; import org.jdesktop.swingx.JXMultiSplitPane; import org.jdesktop.swingx.MultiSplitLayout; import javax.swing.*; import java.awt.*; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; /** * 折叠面板测试 */ public class CollapseTest extends AbstractDefaultPanel { private Icon collapsedIcon; private Icon expandedIcon; private MultiSplitLayout multiSplitLayout; private JXMultiSplitPane collapsePanel; private Row title; private JLabel titleLabel; private Row content; @Override protected void init() { /*切割面板布局*/ String defaultLayout = "(COLUMN " + "(LEAF name=title weight=0.1)" + "(LEAF name=content weight=0.9)" + ")"; multiSplitLayout = new MultiSplitLayout(MultiSplitLayout.parseModel(defaultLayout)); collapsedIcon = UIManager.getIcon("Tree.collapsedIcon"); expandedIcon = UIManager.getIcon("Tree.expandedIcon"); collapsePanel = new JXMultiSplitPane(); collapsePanel.setLayout(multiSplitLayout); collapsePanel.setBackground(Color.white); collapsePanel.setBorder(BorderFactory.createLineBorder(ColorBuilder.LABEL_GRAY_COLOR1)); createTitle(); createContent(); } private void createTitle() { title = new Row(); titleLabel = new JLabel("collapse测试", collapsedIcon, SwingConstants.CENTER); title.add(titleLabel); collapsePanel.add(title, "title"); } private void createContent() { content = new Row(); String text = RandomUtil.randomString(200); JTextArea textArea = new JTextArea(text); textArea.setPreferredSize(new Dimension(400, 200)); textArea.setEditable(false); textArea.setLineWrap(true); textArea.setBackground(Color.white); content.setBackground(Color.white); content.add(textArea); collapsePanel.add(content, "content"); } @Override protected void render() { multiSplitLayout.displayNode("content",false); multiSplitLayout.layoutByWeight(title); view.add(collapsePanel, "center,w 400"); super.add(view); } @Override protected void bindEvents() { title.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { boolean isShow = content.isVisible(); multiSplitLayout.displayNode("content",!isShow); if (isShow) { titleLabel.setIcon(collapsedIcon); title.setBorder(BorderFactory.createEmptyBorder()); } else { titleLabel.setIcon(expandedIcon); title.setBorder(BorderBuilder.bottomBorder(1, ColorBuilder.LABEL_GRAY_COLOR1)); } // collapsePanel.revalidate(); // collapsePanel.repaint(); multiSplitLayout.layoutByWeight(title); } }); } public static void main(String[] args) { FlatLightLaf.install(); FrameUtil.launchTest(new CollapseTest()); } }