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JTree と JButton に問題があります 編集モードに入り、TreeCells のボタンにカーソルを合わせると、ボタン内のツリーの一部がレンダリングされるようです。あるボタンから同じ行の別のボタンにドラッグしても、あるボタンが別のボタンの上にレンダリングされます。

ここに、コピーして貼り付けて意味を確認できる短い自己説明サンプルがあります。

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.util.EventObject;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellEditor;
import javax.swing.tree.DefaultTreeCellRenderer;


public class MyProblemWithTree {

    public static void main(String...args) {
        JFrame frame = new JFrame("Panel");
        JScrollPane scroll = new JScrollPane();

        DefaultMutableTreeNode node = new DefaultMutableTreeNode("Root");

        DefaultMutableTreeNode nodeChild = new DefaultMutableTreeNode("childcaretaker1");
        nodeChild.add(new DefaultMutableTreeNode("child1"));
        nodeChild.add(new DefaultMutableTreeNode("child2"));

        node.add(nodeChild);


        final JTree tree = new JTree(node);

        tree.setCellRenderer(new MyTreeCellRenderer());
        tree.setEditable(true);
        tree.setCellEditor(new MyTreeCellEditor(tree));

        tree.addMouseMotionListener(new MouseMotionListener() {

            @Override
            public void mouseMoved(MouseEvent e) {
                // TODO Auto-generated method stub
                if (tree.getRowForLocation(e.getX(), e.getY()) != -1)
                {
                    tree.startEditingAtPath(tree.getPathForLocation(e.getX(), e.getY()));
                } 
            }

            @Override
            public void mouseDragged(MouseEvent arg0) {
                // TODO Auto-generated method stub

            }
        });

        scroll.setViewportView(tree);
        frame.add(scroll);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }
}
class MyTreeCellEditor extends DefaultTreeCellEditor {

    JPanel      leafPanel;
    JLabel      colorIcon;
    PlayButton  play; 
    PauseButton pause;
    JLabel      name; 

    public MyTreeCellEditor(JTree tree) {
        super(tree, (MyTreeCellRenderer)tree.getCellRenderer());
        leafPanel   = new JPanel(new FlowLayout());
        colorIcon   = new JLabel(UIManager.getIcon("OptionPane.informationIcon"));
        play        = new PlayButton();
        pause       = new PauseButton();
        name        = new JLabel();

        play.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent arg0) {
                // TODO Auto-generated method stub
                System.out.println("Playbutton klickt");
            }
        });

        leafPanel.add(colorIcon);
        leafPanel.add(name);
        leafPanel.add(pause);
        leafPanel.add(play);
    }


    @Override
    public Component getTreeCellEditorComponent(JTree tree, Object value,
            boolean selected, boolean expanded, boolean leaf, int row) {

        name.setText((String)((DefaultMutableTreeNode)value).getUserObject());
        pause.setVisible(!leaf);
        return leafPanel;
    }

    @Override
    public boolean isCellEditable(EventObject arg0) {
        return true;
    }
}
class MyTreeCellRenderer extends DefaultTreeCellRenderer {
    private static final long serialVersionUID = 3691823996133806942L;

    JPanel leafPanel;
    JLabel colorIcon;
    PlayButton play; 
    PauseButton pause;
    JLabel name; 

    DefaultTreeCellRenderer defaultRenderer = new DefaultTreeCellRenderer();

    Color backgroundSelectionColor; 
    Color backgroundNonSelectionColor;


    public MyTreeCellRenderer() {
        leafPanel = new JPanel(new FlowLayout());
        colorIcon = new JLabel(UIManager.getIcon("OptionPane.informationIcon"));
        play = new PlayButton();
        pause = new PauseButton();
        name = new JLabel();

        leafPanel.add(colorIcon);
        leafPanel.add(name);
        leafPanel.add(pause);
        leafPanel.add(play);

        backgroundSelectionColor = new Color(200,200,255,50);
        backgroundNonSelectionColor = new Color(0,0,0,0);
    }

    @Override
    public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
        name.setText((String)((DefaultMutableTreeNode) value).getUserObject());
        if (selected) {
            leafPanel.setBackground(backgroundSelectionColor);
        } else {
            leafPanel.setBackground(backgroundNonSelectionColor);                       
        }
        leafPanel.setEnabled(tree.isEnabled());
        pause.setVisible(!leaf);
        return leafPanel;
    }
}

class PlayButton extends JButton{
    private static final long serialVersionUID = 550654173835539853L;

    Dimension size = new Dimension(140,28);

    public PlayButton() {
        setIcon(UIManager.getIcon("OptionPane.informationIcon"));
        setPressedIcon(UIManager.getIcon("OptionPane.errorIcon"));
        setBackground(new Color(0,0,0,0));
        setBorderPainted(false);
        setPreferredSize(size);
        setMaximumSize(size);
        setMinimumSize(size);
    }
}
class PauseButton extends JButton{
    private static final long serialVersionUID = -5877843953696256070L;

    Dimension size = new Dimension(140,28);

    public PauseButton() {
        setIcon(UIManager.getIcon("OptionPane.warningIcon"));
        setPressedIcon(UIManager.getIcon("OptionPane.questionIcon"));
        setBackground(new Color(0,0,0,0));
        setBorderPainted(false);
        setPreferredSize(size);
        setMaximumSize(size);
        setMinimumSize(size);
    }
}

このパーツを消しても。セルをクリックして編集モードに入る必要がありますが、マウスでセルを離れて戻ることで効果を得ることができます。

        public void mouseMoved(MouseEvent e) {
            // TODO Auto-generated method stub
            if (tree.getRowForLocation(e.getX(), e.getY()) != -1)
            {
                tree.startEditingAtPath(tree.getPathForLocation(e.getX(), e.getY()));
            } 
        }

この JTree のカスタマイズに既に 4 日を費やしています。しかし、ボタンを入力してレンダリングを停止するにはどうすればよいのか、本当に混乱します。

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1 に答える 1

1

これを修正する方法はわかりませんが、 と を使用するinvokeLaterと役立ちますsetRowHeight()。

public static void main(String... args) {
    EventQueue.invokeLater(new Runnable() {

        @Override
        public void run() {
            JFrame frame = new JFrame("Panel");
            ...
            tree.setRowHeight(icon.getIconHeight());
            ...
            frame.setVisible(true);
        }
    });
}
于 2013-01-11T14:12:43.060 に答える