plugin-event-manager/src/main/java/com/fr/plugin/event/manager/ui/tree/MyComponentCellRenderer.java

package com.fr.plugin.event.manager.ui.tree;

import com.fr.plugin.event.manager.data.MyTree;

import javax.swing.BorderFactory;
import javax.swing.Icon;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;
import java.awt.Color;
import java.awt.Component;

/**
 * @author Joe
 * Created by Joe on 12/14/2020
 */
public class MyComponentCellRenderer extends DefaultTreeCellRenderer {
    public MyComponentCellRenderer() {
    }

    @Override
    public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded,
                                                  boolean leaf, int row, boolean hasFocus) {
        super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
        if (value instanceof MyTree) {
            String name = ((MyTree) value).getData().getNodeName();
            // todo 或许要用html使文字换行 https://www.open-open.com/blog/5035948000942327244.html
            setText(name);
            Icon icon = ((MyTree) value).getData().getIcon();
            if (icon != null) {
                setIcon(icon);
            }
        }
        this.setBorder(BorderFactory.createEmptyBorder(1, 0, 1, 0));
        this.setBackgroundNonSelectionColor(new Color(255, 255, 255));
        return this;
    }

    @Override
    public Icon getClosedIcon() {
        return getIcon();
    }

    @Override
    public Icon getLeafIcon() {
        return getIcon();
    }

    @Override
    public Icon getOpenIcon() {
        return getIcon();
    }
}