从JDialog中的JOptionPane获取输入
从JDialog中的JOptionPane获取输入
提问于 2018-06-18 07:20:39
出于涉及外观花哨的组件的目的，我编写了一个在JDialog中创建和显示JOptionPane的函数。现在，我需要从那个JDialog获取输入，但我不能。有没有一种方法可以让我在不扩展JDialog或JOptionPane的情况下从该JDialog获取输入？(我也不能使用UIManager来改变JDialog的外观，这就是我首先遇到这个问题的原因)
public static final Color WHITE = Color.WHITE;
public static final Color RED = Color.RED;
public static final Color LIGHTER_RED = new Color(255, 0, 0, 100);
public static final Color LIGHT_RED = new Color(255, 0, 0, 160);
public static final Color DARK_BLUE = new Color(22, 44, 66);
public static final Font GEORGIA_BOLD_12 = new Font("Georgia", Font.BOLD, 12);
public static final BasicStroke STROKE_0 = new BasicStroke(0);
private static void recursivePaint(Container ct) {
for (Component c : ct.getComponents()) {
if (c instanceof Container) {
c.setBackground(DARK_BLUE);
c.setForeground(WHITE);
recursivePaint((Container) c);
}
}
}
public static int showInputDialog(final Container parent) {
int portNumber = 0;
final JLabel label = new JLabel("Enter an Open Port: ", SwingConstants.LEFT);
label.setOpaque(true);
label.setBackground(DARK_BLUE);
label.setForeground(WHITE);
final JButton button = new JButton("OK") {
private static final long serialVersionUID = -4808194362293478299L;
@Override
public int getWidth() {
return 51;
}
@Override
public int getHeight() {
return 26;
}
@Override
public void paintComponent(final Graphics g) {
final Graphics2D g2d = (Graphics2D) g;
g2d.clearRect(0, 0, getWidth(), getHeight());
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d.setStroke(STROKE_0);
g2d.setColor(LIGHTER_RED);
if (this.getModel().isRollover()) {
g2d.setColor(LIGHT_RED);
}
if (this.getModel().isPressed()) {
g2d.setColor(RED);
}
g2d.fillRect(0, 0, getWidth(), getHeight());
g2d.setColor(RED);
g2d.drawRect(0, 0, getWidth(), getHeight());
g2d.setColor(WHITE);
g2d.setFont(GEORGIA_BOLD_12);
g2d.drawString("CONFIRM", 10, 18);
}
};
button.addActionListener(e -> {
//GET THE INPUT OF JOPTIONPANE TEXTFIELD
//portNumber = getTextOfJOptionPane();
SwingUtilities.getWindowAncestor((Component) e.getSource()).setVisible(false);
SwingUtilities.getWindowAncestor((Component) e.getSource()).dispose();
});
final JOptionPane optionPane = new JOptionPane(label, JOptionPane.QUESTION_MESSAGE, JOptionPane.OK_OPTION, null, new JButton[] {button}, button);
optionPane.setWantsInput(true);
optionPane.setOpaque(true);
optionPane.setBackground(DARK_BLUE);
optionPane.getInputValue();
recursivePaint(optionPane);
final JDialog d = optionPane.createDialog(parent, "Open port required!");
d.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
d.setContentPane(optionPane);
d.pack();
d.setLocationRelativeTo(parent);
d.setVisible(true);
return portNumber;
}提前谢谢。
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-06-18 08:17:08
由于JOptionPane不会公开复制它所需的所有功能，因此您必须采取更多控制措施。
“合适”的方法是提供您自己的自定义外观和感觉委托，但这似乎有很多额外的工作，以便您可以控制JTextField。
相反，您可以通过message参数将JLabel和JTextField都传递给OptionPane，该参数包含在单个JPanel中，例如...
public static final Color WHITE = Color.WHITE;
public static final Color RED = Color.RED;
public static final Color LIGHTER_RED = new Color(255, 0, 0, 100);
public static final Color LIGHT_RED = new Color(255, 0, 0, 160);
public static final Color DARK_BLUE = new Color(22, 44, 66);
public static final Font GEORGIA_BOLD_12 = new Font("Georgia", Font.BOLD, 12);
public static final BasicStroke STROKE_0 = new BasicStroke(0);
public static int showInputDialog(final Container parent) {
int portNumber = 0;
final JLabel label = new JLabel("Enter an Open Port: ", SwingConstants.LEFT);
label.setForeground(WHITE);
JPanel panel = new JPanel(new GridLayout(2, 1));
panel.setOpaque(true);
panel.setBackground(DARK_BLUE);
JTextField inputField = new JTextField(10);
panel.add(label);
panel.add(inputField);
final JButton button = new JButton("OK") {
private static final long serialVersionUID = -4808194362293478299L;
@Override
public int getWidth() {
return 51;
}
@Override
public int getHeight() {
return 26;
}
@Override
public void paintComponent(final Graphics g) {
final Graphics2D g2d = (Graphics2D) g;
g2d.clearRect(0, 0, getWidth(), getHeight());
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d.setStroke(STROKE_0);
g2d.setColor(LIGHTER_RED);
if (this.getModel().isRollover()) {
g2d.setColor(LIGHT_RED);
}
if (this.getModel().isPressed()) {
g2d.setColor(RED);
}
g2d.fillRect(0, 0, getWidth(), getHeight());
g2d.setColor(RED);
g2d.drawRect(0, 0, getWidth(), getHeight());
g2d.setColor(WHITE);
g2d.setFont(GEORGIA_BOLD_12);
g2d.drawString("CONFIRM", 10, 18);
}
};
final JOptionPane optionPane = new JOptionPane(panel, JOptionPane.QUESTION_MESSAGE, JOptionPane.OK_OPTION, null, new JButton[]{button}, button);
button.addActionListener(e -> {
//GET THE INPUT OF JOPTIONPANE TEXTFIELD
optionPane.setInputValue(inputField.getText());
optionPane.setValue(JOptionPane.OK_OPTION);
});
optionPane.setOpaque(true);
optionPane.setBackground(DARK_BLUE);
final JDialog d = optionPane.createDialog(parent, "Open port required!");
d.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
d.setContentPane(optionPane);
d.pack();
d.setLocationRelativeTo(parent);
d.setVisible(true);
System.out.println(optionPane.getValue());
System.out.println(optionPane.getInputValue());
return portNumber;
}所以。此外，我还做了一些额外的更改。在ActionListener中，我将操作的“值”设置为OK_OPTION并命名为setInputValue。调用setValue很重要，否则inputValue将不会被应用，因为它会认为您已经“取消”了对话框。
我不知道你的对话框在你的系统上是什么样子，但这就是它在我的系统上的样子……
这就是为什么覆盖像getHeight和getWidth这样的东西是不明智的
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50901214
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