有没有办法在Java Jframe中自动编辑按钮的属性？

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想要改进此问题？添加详细信息并通过

闭合 2年前。

Answer 1

您可以...

使用“ nofollow noreferrer”>“建筑商”

该概念是提供一个工作流程，使您可以应用所需的所有属性，然后将该对象“构建”，例如...

public class ButtonBuilder<Builder extends ButtonBuilder<Builder>> {
    private JButton button;

    public ButtonBuilder() {
        button = new JButton();
    }
    
    public Builder withText(String text) {
        button.setText(text);
        return (Builder)this;
    }
    
    public Builder withIcon(Icon icon) {
        button.setIcon(icon);
        return (Builder)this;
    }
    
    public Builder borderPainted(boolean painted) {
        button.setBorderPainted(painted);
        return (Builder)this;
    }
    
    public Builder contentAreaFilled(boolean painted) {
        button.setContentAreaFilled(painted);
        return (Builder)this;
    }
    
    public Builder focusPainted(boolean painted) {
        button.setFocusPainted(painted);
        return (Builder)this;
    }
    
    public JButton build() {
        return button;
    }
}

nb：请注意，建造者的常见模式是将属性存储在某些中一种缓存/查找，然后在您调用构建时应用它们，但是在这种情况下，将它们直接应用于按钮本身

nb：显然，我只提供了一个小子集您可能需要为按钮指定的属性，您需要添加其余的;）

，然后您可以使用类似的内容来构建按钮

JButton happyButton = new ButtonBuilder()
        .withText("Happy")
        .withIcon(new ImageIcon(ImageIO.read(getClass().getResource("/images/happy.png"))))
        .borderPainted(false)
        .focusPainted(false)
        .contentAreaFilled(false)
        .build();

但这不是我问的，我不想每次创建一个按钮

重新申请所有属性

是的，我知道，我都必须重新应用所有属性。一旦拥有“基础”构建器，就可以制作一个或多个“自定义”扩展名，例如，可以直接应用默认值...

public class MyCustomButtonBuilder extends ButtonBuilder<MyCustomButtonBuilder> {
    public MyCustomButtonBuilder(String text) {
        this(text, null);
    }
    
    public MyCustomButtonBuilder(Icon icon) {
        this(null, icon);
    }
    
    public MyCustomButtonBuilder(String text, Icon icon) {
        super();
        withText(text)
                .withIcon(icon)
                .borderPainted(false)
                .focusPainted(false)
                .contentAreaFilled(false);
    }
}

然后可以使用类似的东西...

JButton sadButton = new MyCustomButtonBuilder("Sad", new ImageIcon(ImageIO.read(getClass().getResource("/images/Sad.png"))))
        .build();

您可以...

使用a < a href =“ https://www.javatpoint.com/factory-method-design-pattern#:%7e:text = a%20factory%20Pattern%20Pattern%20OR%20Factory，％20Instance%20Instance%20OF%20The％20CLASS。” ”

public class ButtonFactory {
    public static JButton makePlainButton() {
        return makePlainButton(null, null);
    }

    public static JButton makePlainButton(String text) {
        return makePlainButton(text, null);
    }

    public static JButton makePlainButton(String text, Icon icon) {
        JButton btn = new JButton(text, icon);
        btn.setBorderPainted(false);
        btn.setContentAreaFilled(false);
        btn.setFocusPainted(false);
        btn.setOpaque(false);
        return btn;
    }
}

rel =“ nofollow noreferrer

JButton heartButton = ButtonFactory.makePlainButton(
        "Heart", 
        new ImageIcon(ImageIO.read(getClass().getResource("/images/Heart.png")))
);

”>“工厂模式 根据您的共同需求。

您可以...

结合两个概念，例如...

public class ButtonFactory {
    public static JButton makePlainButton() {
        return makePlainButton(null, null);
    }

    public static JButton makePlainButton(String text) {
        return makePlainButton(text, null);
    }

    public static JButton makePlainButton(String text, Icon icon) {
        return new ButtonBuilder()
                .withText(text)
                .withIcon(icon)
                .borderPainted(false)
                .focusPainted(false)
                .contentAreaFilled(false)
                .build();
    }
}