属性编辑器

import javax.swing.JPanel;public class ChartBean extends JPanel{private float titlePosition = JPanel.CENTER_ALIGNMENT;public float getTitlePosition() {return titlePosition;}public void setTitlePosition(float titlePosition) {this.titlePosition = titlePosition;}}

 

import java.beans.PropertyEditorSupport;public class TitlePositionEditor extends PropertyEditorSupport {private String[] options = {"Left", "Center", "Right"};@Overridepublic String[] getTags() {return options;}@Overridepublic String getJavaInitializationString() {return "" + getValue();}@Overridepublic void setAsText(String text) throws IllegalArgumentException {for (int i = 0; i < options.length; i++) {if (options[i].equals(text)) {setValue(i);return;}}super.setAsText(text);}@Overridepublic String getAsText() {int value = (Integer)getValue();return options[value];}}

 

import java.beans.PropertyDescriptor;import java.beans.SimpleBeanInfo;public class ChartBeanBeanInfo extends SimpleBeanInfo {@Overridepublic PropertyDescriptor[] getPropertyDescriptors() {try {//将TitlePositionEditor绑定到ChartBean的titlePosition属性中PropertyDescriptor titlePositionDescriptor = new PropertyDescriptor("titlePosition", ChartBean.class);titlePositionDescriptor.setPropertyEditorClass(TitlePositionEditor.class);return new PropertyDescriptor[] {titlePositionDescriptor};} catch (Exception e) {e.printStackTrace();return null;}}}