finekit/src/main/java/com/fanruan/api/design/work/component/IntComboBox.java

package com.fanruan.api.design.work.component;

import com.fanruan.api.design.ui.component.UIComboBox;
import com.fr.design.gui.icombobox.UIComboBoxRenderer;

import javax.swing.*;
import java.awt.*;

/**
 * @author richie
 * @version 10.0
 * Created by richie on 2019/11/1
 * 用于选择和展示整数的下拉框
 */
public class IntComboBox extends UIComboBox {

    public IntComboBox() {
        init();
    }

    public IntComboBox(Integer[] data) {
        ComboBoxModel<Integer> model = new DefaultComboBoxModel<>(data);
        setModel(model);
        init();
    }

    private void init() {
        this.setRenderer(new UIComboBoxRenderer() {
            public Component getListCellRendererComponent(JList list,
                                                          Object value, int index, boolean isSelected, boolean cellHasFocus) {
                super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
                if (value instanceof Integer) {
                    this.setText(" " + value + "  ");
                }
                return this;
            }
        });
    }

    public int getSelectedInt() {
        if (this.getSelectedItem() == null) {
            return -1;
        }
        return (Integer) this.getSelectedItem();
    }

    public void setSelectedInt(int selectedInt) {
        int index = -1;
        for (int i = 0; i < this.getItemCount(); i++) {
            if ((Integer) this.getItemAt(i) == selectedInt) {
                index = i;
                break;
            }
        }
        this.setSelectedIndex(index);
    }
}