在eclipse-rcp / swt中创建多个相同的文本验证侦听器

定义

VerifyListener

Text

VerifyEvent

VerifyListener listener = new VerifyListener(){    @Override    public void verifyText(VerifyEvent e)    {        // Get the source widget        Text source = (Text) e.getSource();        // Get the text        final String oldS = source.getText();        final String newS = oldS.substring(0, e.start) + e.text + oldS.substring(e.end);        try        { BigDecimal bd = new BigDecimal(newS); // value is decimal // Test value range        }        catch (final NumberFormatException numberFormatException)        { // value is not decimal e.doit = false;        }    }};// Add listener to both textstext.addVerifyListener(listener);anotherText.addVerifyListener(listener);

如果您还想在其他地方使用它，请创建一个新类：

public class MyVerifyListener implements VerifyListener{    // The above pre in here}

然后使用：

MyVerifyListener listener = new MyVerifyListener();text.addVerifyListener(listener);anotherText.addVerifyListener(listener);