版权声明:转载麻烦告知。 https://blog.csdn.net/qq_40064948/article/details/81738160
import javax.swing.JTextPane;
import javax.swing.text.AbstractDocument;
import javax.swing.text.BoxView;
import javax.swing.text.ComponentView;
import javax.swing.text.Element;
import javax.swing.text.IconView;
import javax.swing.text.LabelView;
import javax.swing.text.ParagraphView;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledEditorKit;
import javax.swing.text.View;
import javax.swing.text.ViewFactory;
/**
* 针对Bug JTextPane中当输入较长的英文无空格时,会认为这是一个单词,并且自动换行失效,导致JTextPane的实际宽度变大出现滚动条
* 重写JTextPane的方法,来控制这个Bug
*/
public class MyTextPane extends JTextPane {
private static final long serialVersionUID = 1L;
public MyTextPane() {
super();
this.setEditorKit(new WarpEditorKit());
}
//内部类---以下内部类全都用于实现自动强制折行
@SuppressWarnings("serial")
private class WarpEditorKit extends StyledEditorKit {
private ViewFactory defaultFactory = new WarpColumnFactory();
@Override
public ViewFactory getViewFactory() {
return defaultFactory;
}
}
//内部类
private class WarpColumnFactory implements ViewFactory {
public View create(Element elem) {
String kind = elem.getName();
if (kind != null) {
if (kind.equals(AbstractDocument.ContentElementName)) {
return new WarpLabelView(elem);
} else if (kind.equals(AbstractDocument.ParagraphElementName)) {
return new ParagraphView(elem);
} else if (kind.equals(AbstractDocument.SectionElementName)) {
return new BoxView(elem, View.Y_AXIS);
} else if (kind.equals(StyleConstants.ComponentElementName)) {
return new ComponentView(elem);
} else if (kind.equals(StyleConstants.IconElementName)) {
return new IconView(elem);
}
}
return new LabelView(elem);
}
}
private class WarpLabelView extends LabelView {
public WarpLabelView(Element elem) {
super(elem);
}
@Override
public float getMinimumSpan(int axis) {
switch (axis) {
case View.X_AXIS:
return 0;
case View.Y_AXIS:
return super.getMinimumSpan(axis);
default:
throw new IllegalArgumentException("Invalid axis: " + axis);
}
}
}
}