java expandable JDialog [英] java expandable JDialog
问题描述
对于我的应用程序，我有一个 JDialog ，其中包含 JPanel ，其中包含一些基本的 JTextFields 和 JButtons 。我们的想法是有一个扩展 JDialog 的按钮，以显示第二个 JPanel ，其中包含一些高级设置。
For my application I have a JDialog which contains a JPanel with some basic JTextFields and JButtons. The idea is to have a button which expands the JDialog to reveal a second JPanel which contains some "advance" settings.
我通过调用 setPreferredSize（）和 pack（），但这不是很优雅。一个优雅的解决方案是将第二个Panel设置为某种方式为null，因此当切换状态处于缩回状态时被pack（）忽略。
I have achieved this with calling setPreferredSize() and pack(), but this isn't very elegant. An "elegant" solution would be to set the second Panel to be somehow null and therefore to get ignored by pack() when the toggle state is in "retracted".
对不起，我无法为你提供代码（那个东西大约有700个谎言），但就像我在JDialog中基本上说的两个JPanels一样。
Sorry that I can't provide you with code (that thing is about 700 lies) but all it is like I said basically two JPanels in a JDialog.
这里有一些图片：
问题：是否有诀窍可以获得此功能无需为扩展/正常状态设置固定尺寸即可扩展。
Question: is there a trick to get this expanding thing going without having to set fixed dimensions for the expanded/normal state.
推荐答案
您可能有几种方法可以做例如，您可以根据需要添加和删除底部面板。如果可以的话，我想避免这种情况，因为它可以使管理布局更加困难。
There are probably a few ways you could do this, you could, for example, simply add and remove the bottom panel as needed. If I can, I'd like to avoid this, as it can make managing the layout more difficult.
另一个解决方案就是让组件可见/不可见，但是你需要找到一个布局管理器，它实际上会处理一个不可见的组件，就像它不存在一样（ 0x0 ） - 是的，我在测试时遇到了一对问题。 ..
Another solution is simply to make the component visible/invisible, but you need to find a layout manager which will actually treat a invisible component like it's not there (0x0) - and yes, I had issues with a couple while putting a test together...
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class FlipDialog {
public static void main(String[] args) {
new FlipDialog();
}
public FlipDialog() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private JButton flip;
private JPanel bottom;
public TestPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.insets = new Insets(8, 8, 8, 8);
gbc.gridwidth = GridBagConstraints.REMAINDER;
JPanel top = new JPanel();
flip = new JButton("+");
top.add(flip);
add(top, gbc);
bottom = new JPanel();
bottom.add(new JLabel("Boo"));
bottom.setVisible(false);
add(bottom, gbc);
flip.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
bottom.setVisible(!bottom.isVisible());
if (bottom.isVisible()) {
flip.setText("-");
} else {
flip.setText("+");
}
revalidate();
Window window = SwingUtilities.windowForComponent(bottom);
window.pack();
}
});
}
}
}
应该注意的是，对 revalidate 的调用可能无关紧要，因为你正在打包窗口
It should be noted that the call to revalidate is probably irrelevant as you're packing the window anyway
更新了布局示例
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractSpinnerModel;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSpinner;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.EmptyBorder;
import javax.swing.border.TitledBorder;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class Test100 {
public static void main(String[] args) {
new Test100();
}
public Test100() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new SearchPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class SearchPane extends JPanel {
private ObjectsPane objectsPane;
private AdvanceSettingsPane advanceSettingsPane;
public SearchPane() {
setBorder(new EmptyBorder(8, 8, 8, 8));
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.weighty = 1;
gbc.fill = GridBagConstraints.BOTH;
objectsPane = new ObjectsPane();
add(objectsPane, gbc);
gbc.gridy++;
gbc.weighty = 0;
advanceSettingsPane = new AdvanceSettingsPane();
advanceSettingsPane.setVisible(false);
add(advanceSettingsPane, gbc);
objectsPane.addExpandCollapseListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
System.out.println(objectsPane.isExpanded());
advanceSettingsPane.setVisible(objectsPane.isExpanded());
Window window = SwingUtilities.windowForComponent(SearchPane.this);
window.pack();
}
});
}
public class ObjectsPane extends JPanel {
private JSpinner findField;
private JTextField replaceField;
private JButton expandButton;
private JButton replaceButton;
private JButton replaceAllButton;
private boolean expanded = false;
public ObjectsPane() {
setLayout(new GridBagLayout());
findField = new JSpinner(new AbstractSpinnerModel() {
@Override
public Object getValue() {
return "";
}
@Override
public void setValue(Object value) {
}
@Override
public Object getNextValue() {
return "";
}
@Override
public Object getPreviousValue() {
return "";
}
});
replaceField = new JTextField(10);
replaceButton = new JButton("Replace");
replaceAllButton = new JButton("Replace All");
expandButton = new JButton("+");
GridBagConstraints gbc = new GridBagConstraints();
gbc.insets = new Insets(4, 4, 4, 4);
gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("Objects found:"), gbc);
gbc.gridx = 0;
gbc.gridy = 1;
gbc.gridwidth = 1;
gbc.weightx = 0;
add(new JLabel("Find:"), gbc);
gbc.gridy = 2;
add(new JLabel("Replace:"), gbc);
gbc.gridx = 1;
gbc.gridy = 1;
gbc.weightx = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.gridwidth = GridBagConstraints.REMAINDER;
add(findField, gbc);
gbc.gridy = 2;
add(replaceField, gbc);
gbc.anchor = GridBagConstraints.WEST;
gbc.gridwidth = 1;
gbc.weightx = 0;
gbc.gridx = 0;
gbc.gridy = 3;
gbc.fill = GridBagConstraints.NONE;
add(expandButton, gbc);
JPanel pnlButtons = new JPanel(new GridLayout(1, 2));
pnlButtons.add(replaceButton);
pnlButtons.add(replaceAllButton);
gbc.gridx = 1;
gbc.gridy = 3;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
gbc.gridwidth = GridBagConstraints.REMAINDER;
add(pnlButtons, gbc);
expandButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
expanded = !expanded;
if (expanded) {
expandButton.setText("-");
} else {
expandButton.setText("+");
}
fireStateChanged();
}
});
}
public boolean isExpanded() {
return expanded;
}
public void addExpandCollapseListener(ChangeListener listener) {
listenerList.add(ChangeListener.class, listener);
}
public void removeExpandCollapseListener(ChangeListener listener) {
listenerList.remove(ChangeListener.class, listener);
}
protected void fireStateChanged() {
ChangeListener[] listeners = listenerList.getListeners(ChangeListener.class);
if (listeners.length > 0) {
ChangeEvent evt = new ChangeEvent(this);
for (ChangeListener listener : listeners) {
listener.stateChanged(evt);
}
}
}
}
public class AdvanceSettingsPane extends JPanel {
public AdvanceSettingsPane() {
setBorder(new TitledBorder("Advance Settings"));
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
// gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
gbc.gridwidth = GridBagConstraints.REMAINDER;
add(new JCheckBox("Live Update"), gbc);
add(new JCheckBox("Word search"), gbc);
add(new JCheckBox("Ignore Case"), gbc);
}
}
}
}
这篇关于java expandable JDialog的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
