java用户验证模块_Swing通用数据验证模块

喜欢ヅ旅行 2022-11-08 14:28 81阅读 0赞

packagede.jingge.view;importjava.awt.Graphics2D;importjava.awt.image.BufferedImage;importjavax.swing.BorderFactory;importjavax.swing.JComponent;importjavax.swing.text.JTextComponent;importorg.hibernate.validator.ClassValidator;importorg.hibernate.validator.InvalidValue;importorg.jdesktop.beansbinding.ELProperty;importorg.jdesktop.beansbinding.PropertyStateEvent;importorg.jdesktop.beansbinding.PropertyStateListener;importorg.jdesktop.jxlayer.JXLayer;importorg.jdesktop.jxlayer.plaf.AbstractLayerUI;/\*\*\* Header:

\* Description: A layerUI which will validate the referenced property value of

\* the object each time when the paint(

![9b8a8a44dd1c74ae49c20a7cd451974e.png][]) method is called.

\* The value of the given object property will be observed.

\* Note: This UI works only with \{@linkJXLayer\}. Any change of the property

\* will force repainting the UI. The work process looks like: property changed ->

\* jxlayer will be repainted -> the paint(

![9b8a8a44dd1c74ae49c20a7cd451974e.png][]) method of this UI will be called.

\* The logic of validation will be handled by the Hibernate validator

\* framework.

\*\*/publicclassHibernateValidationUIextendsAbstractLayerUI\{privateObject object;privateString propertyName;privateClassValidator validator;privateELProperty elProperty;privatePropertyStateListener propertyChangeHandler;publicHibernateValidationUI(Object obj, String propertyName) \{this.object=obj;this.propertyName=propertyName;

propertyChangeHandler=newPropertyChangeHandler();

validator=newClassValidator(obj.getClass());

elProperty=ELProperty.create("$\{"+propertyName+"\}");

\}publicvoidinstallUI(JComponent c) \{super.installUI(c);

elProperty.addPropertyStateListener(object, propertyChangeHandler);

\}publicvoiduninstallUI(JComponent c) \{super.uninstallUI(c);

elProperty.removePropertyStateListener(object, propertyChangeHandler);

\}protectedvoidpaintLayer(Graphics2D g2, JXLayerl) \{super.paintLayer(g2, l);

InvalidValue\[\] validationMessages=validator.getInvalidValues(object,

propertyName);if(validationMessages.length>0) \{

BufferedImage image=Java2DIconFactory.createErrorIcon();

g2.drawImage(image, l.getWidth()-image.getWidth()-1,