JavaFX组件扩展(三)
对于枚举类,我们希望在数据库中存放一个有意义的英文字符串,在界面上显示一个有意义的中文字符串。所以为枚举类设置两个属性。
如以下DataStatusEnum(数据状态枚举)。
package com.lirong.eap.platform.base.pub.enumtype;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.lirong.eap.platform.base.pub.enumtype.deserializer.DataStatusEnumJsonDeserializer;
import com.lirong.eap.platform.base.pub.vo.BaseEnumJsonSerializer;
import com.lirong.eap.platform.base.pub.vo.IEnumType;
import static com.lirong.eap.platform.base.pub.i18n.LRResourceManager.getMessageWithJava;
/**
* <p>Title: LiRong Java Enterprise Application Platform </p>
* <p>Description: DataStatusEnum(数据状态) 枚举类 </p>
* <p>CorpRights: lrJAP.com</p>
* <p>Company: lrJAP.com</p>
*
* @author jianjun.yu
* @version 3.0.0-SNAPSHOT
* @date 2022-04-19
* @since 1.0.0-SNAPSHOT
*/
@JsonSerialize(using = BaseEnumJsonSerializer.class)
@JsonDeserialize(using = DataStatusEnumJsonDeserializer.class)
public enum DataStatusEnum implements IEnumType {
INIT("Init", getMessageWithJava(getResourceFileInfo(), "DataStatusEnum.Init", "初始化")), // $NON-NLS$
NORMAL("Normal", getMessageWithJava(getResourceFileInfo(), "DataStatusEnum.Normal", "正常")), // $NON-NLS$
FROZEN("Frozen", getMessageWithJava(getResourceFileInfo(), "DataStatusEnum.Frozen", "冻结")), // $NON-NLS$
DISCARD("Discard", getMessageWithJava(getResourceFileInfo(), "DataStatusEnum.Discard", "作废")); // $NON-NLS$
private final String code;
private final String value;
/* 用于在SQL中进行Decode */
public static final String DECODE_SQL = "'Init', '初始化', 'Normal', '正常', 'Frozen', '冻结', 'Discard', '作废'"; // $NON-NLS$
DataStatusEnum(String code, String value) {
this.code = code;
this.value = value;
}
@Override
public String getCode() {
return code;
}
/**
* 通过国际化机制,获取当前区域需要显示的枚举值
*
* @return
*/
@Override
public String getValue() {
return getMessageWithJava(getResourceFileInfo(), String.format("DataStatusEnum.%s", getCode()), this.value); // $NON-NLS$
}
/**
* 国际化资源信息
*
* @return
*/
public static String getResourceFileInfo() {
return "i18n/platform/base/pub/enumtype/DataStatusEnum"; // $NON-NLS$
}
}
DataStatusEnum中,code用于持久化到数据库中,value用于在界面上展示。其中有四个枚举值。
package com.lirong.javafx.demo.j3003;
import javafx.application.Application;
import javafx.geometry.HPos;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.layout.ColumnConstraints;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Priority;
import javafx.stage.Stage;
/**
* <p>Title: LiRong Java Application Platform</p>
* Description: <br>
* Copyright: CorpRights lrJAP.com<br>
* Company: lrJAP.com<br>
*
* @author yujj
* @version 1.1.1
* @date 2018-04-29
* @since 9.0.4
*/
public class TestEnumComboBox extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception {
Label lblEnum = new Label("数据状态:");
ComboBox<DataStatusEnum> comboEnum = new ComboBox<>();
TextArea textConsole = new TextArea();
GridPane gridPane = new GridPane();
gridPane.setPadding(new Insets(10));
gridPane.setVgap(10);
gridPane.setHgap(10);
ColumnConstraints col1 = new ColumnConstraints();
col1.setPercentWidth(40);
ColumnConstraints col2 = new ColumnConstraints();
col2.setPercentWidth(60);
gridPane.getColumnConstraints().addAll(col1, col2);
gridPane.addRow(0, lblEnum, comboEnum);
// label右对齐
GridPane.setHalignment(lblEnum, HPos.RIGHT);
// 使用Combobox充满整个Cell
comboEnum.setMaxWidth(Double.MAX_VALUE);
GridPane.setHgrow(comboEnum, Priority.ALWAYS);
// 为ComboBox赋值
comboEnum.getItems().setAll(DataStatusEnum.values());
// 监听ComboBox变化
comboEnum.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) ->
textConsole.appendText(String.format("选中的枚举信息,code=%s, value=%s。%s", newValue.getCode(), newValue.getValue(), System.getProperty("line.separator"))))
;
gridPane.add(textConsole, 0, 1, 2, 2);
Scene scene = new Scene(gridPane, 400, 300);
primaryStage.setScene(scene);
primaryStage.show();
}
}