所以，正如标题所说，我希望我的 SplitPane 中的两个 ScrollPanes 填充 ButtonPanel 下的剩余空间。我已经尝试了其他几个 LayoutManager，但是在这些情况下，这个是“最好的”。
我在北部、东部、南部和西部设置了约束，所以我真的不明白为什么不尊重南部约束。
我也会使用一些其他 Layoutmanager，例如 BorderLayout，但这似乎也不起作用，因为 JScrollPane 在调整大小时会增长。
public class TestGui extends JSplitPane implements ActionListener {
private static final long serialVersionUID = 7494479633065399119L;
private JPanel ingredientsPanel;
private SpringLayout ingredientsLayout;
private DefaultListModel<String> ingredientsListModel;
private JList<String> ingredientsList;
private JScrollPane ingredientsScrollPane;
private JPanel ingredientsButtonPanel;
private JButton addIngredientButton;
private JButton editIngredientButton;
private JButton removeIngredientButton;
private JPanel spicePanel;
private SpringLayout spiceLayout;
private DefaultListModel<String> spicesListModel;
private JList<String> spicesList;
private JScrollPane spicesScrollPane;
private JPanel spiceButtonPanel;
private JButton addSpiceButton;
private JButton editSpiceButton;
private JButton removeSpiceButton;
public TestGui() {
super(JSplitPane.VERTICAL_SPLIT, true);
this.setMinimumSize(new Dimension(500, 600));
this.setPreferredSize(new Dimension(500, 600));
this.init();
this.display();
}
private void init() {
this.ingredientsLayout = new SpringLayout();
this.ingredientsPanel = new JPanel(this.ingredientsLayout);
this.ingredientsPanel.setMinimumSize(new Dimension(0, 200));
this.ingredientsPanel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.BLACK, 2), "Zutaten"));
this.ingredientsListModel = new DefaultListModel<>();
this.ingredientsList = new JList<>(this.ingredientsListModel);
this.ingredientsScrollPane = new JScrollPane(this.ingredientsList);
this.ingredientsButtonPanel = new JPanel();
this.addIngredientButton = new JButton("Hinzufügen");
this.addIngredientButton.addActionListener(this);
this.addIngredientButton.setActionCommand("addIngredient");
this.editIngredientButton = new JButton("Bearbeiten");
this.editIngredientButton.addActionListener(this);
this.editIngredientButton.setActionCommand("editIngredient");
this.removeIngredientButton = new JButton("Löschen");
this.removeIngredientButton.addActionListener(this);
this.removeIngredientButton.setActionCommand("deleteIngredient");
this.spiceLayout = new SpringLayout();
this.spicePanel = new JPanel(this.spiceLayout);
this.spicePanel.setMinimumSize(new Dimension(0, 200));
this.spicePanel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.BLACK, 2), "Gewürze"));
this.spicesListModel = new DefaultListModel<>();
this.spicesList = new JList<>(this.spicesListModel);
this.spicesScrollPane = new JScrollPane(this.spicesList);
this.spiceButtonPanel = new JPanel();
this.addSpiceButton = new JButton("Hinzufügen");
this.addSpiceButton.addActionListener(this);
this.addSpiceButton.setActionCommand("addSpice");
this.editSpiceButton = new JButton("Bearbeiten");
this.editSpiceButton.addActionListener(this);
this.editSpiceButton.setActionCommand("editSpice");
this.removeSpiceButton = new JButton("Löschen");
this.removeSpiceButton.addActionListener(this);
this.removeSpiceButton.setActionCommand("deleteSpice");
}
private void display() {
this.ingredientsButtonPanel.add(this.addIngredientButton);
this.ingredientsButtonPanel.add(this.editIngredientButton);
this.ingredientsButtonPanel.add(this.removeIngredientButton);
this.ingredientsLayout.putConstraint(SpringLayout.NORTH, this.ingredientsScrollPane, 5, SpringLayout.NORTH, this.ingredientsPanel);
this.ingredientsLayout.putConstraint(SpringLayout.WEST, this.ingredientsScrollPane, 5, SpringLayout.WEST, this.ingredientsPanel);
this.ingredientsLayout.putConstraint(SpringLayout.EAST, this.ingredientsPanel, 5, SpringLayout.EAST, this.ingredientsScrollPane);
this.ingredientsLayout.putConstraint(SpringLayout.NORTH, this.ingredientsButtonPanel, 5, SpringLayout.SOUTH, this.ingredientsScrollPane);
this.ingredientsLayout.putConstraint(SpringLayout.SOUTH, this.ingredientsPanel, 5, SpringLayout.SOUTH, this.ingredientsButtonPanel);
this.ingredientsPanel.add(this.ingredientsScrollPane);
this.ingredientsPanel.add(this.ingredientsButtonPanel);
this.setTopComponent(this.ingredientsPanel);
this.spiceButtonPanel.add(this.addSpiceButton);
this.spiceButtonPanel.add(this.editSpiceButton);
this.spiceButtonPanel.add(this.removeSpiceButton);
this.spiceLayout.putConstraint(SpringLayout.NORTH, this.spicesScrollPane, 5, SpringLayout.NORTH, this.spicePanel);
this.spiceLayout.putConstraint(SpringLayout.WEST, this.spicesScrollPane, 5, SpringLayout.WEST, this.spicePanel);
this.spiceLayout.putConstraint(SpringLayout.EAST, this.spicePanel, 5, SpringLayout.EAST, this.spicesScrollPane);
this.spiceLayout.putConstraint(SpringLayout.NORTH, this.spiceButtonPanel, 5, SpringLayout.SOUTH, this.spicesScrollPane);
this.spiceLayout.putConstraint(SpringLayout.SOUTH, this.spicePanel, 5, SpringLayout.SOUTH, this.spiceButtonPanel);
this.spicePanel.add(this.spicesScrollPane);
this.spicePanel.add(this.spiceButtonPanel);
this.setBottomComponent(this.spicePanel);
}
public JPanel getIngredientsPanel() {
return this.ingredientsPanel;
}
@Override
public void actionPerformed(ActionEvent e) {
switch (e.getActionCommand()) {
case "addIngredient":
break;
case "editIngredient":
break;
case "deleteIngredient":
break;
case "addSpice":
break;
case "editSpice":
break;
case "deleteSpice":
break;
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> {
JFrame frame = new JFrame("Test");
frame.getContentPane()
.add(new TestGui());
frame.setDefaultCloseOperation(3);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
});
}
}