使用多个容器共享组件

时间:2013-05-15 23:46:00

标签: java swing jtabbedpane jpopupmenu

我有JTabbedPane,每个标签都有一个JTextPane。

每个JTextPane都有一个弹出菜单,但我希望所有这些菜单共享完全相同的弹出菜单。为什么?因为当我切换标签时,我希望在每个弹出窗口中突出显示相同的选项。

我该怎么做?我尝试在每个窗格中添加一个静态PopupMenu实例,但是当我将其添加到一个窗格时,它会从其他窗格中消失。

编辑:在下面的SSCCE中,当在TabOne上选中复选框时,它不会在TabTwo上选中。我想要它勾选两个标签。除了那个选项卡之外,所有其他选项对于每个选项卡都是唯一的。

SSCCE:

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.lang.reflect.InvocationTargetException;

import javax.swing.*;


public class Main {

    public static void main(String[] Args) {
        final Main M = new Main();

        try {
            SwingUtilities.invokeAndWait(new Runnable() {

                @Override
                public void run() {
                    JFrame F = new JFrame("SSCCE");
                    JTabbedPane Pane = new JTabbedPane();
                    Pane.addTab("TabOne", M.new DebugBox(500, 500));
                    Pane.addTab("TabTwo", M.new DebugBox(500, 500));

                    F.setLayout(new BorderLayout());
                    F.add(Pane, BorderLayout.NORTH);
                    F.pack();
                    F.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    F.setVisible(true);
                }

            });
        } catch (InvocationTargetException | InterruptedException e) {
            e.printStackTrace();
        }
    }


    public class DebugBox extends JTextPane {

        private JScrollPane ScrollPane = null;
        private final JPopupMenu Menu = new JPopupMenu();
        private static final long serialVersionUID = 7731036968185936516L;

        public DebugBox(int Width, int Height) {
            this.ScrollPane = new JScrollPane(this, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
            this.setPreferredSize(new Dimension(Width, Height));

            JCheckBoxMenuItem Debug = new JCheckBoxMenuItem(new AbstractAction() {
                private static final long serialVersionUID = -336209978671944858L;

                @Override
                public void actionPerformed(ActionEvent e) {
                                 //DO something here that affects ALL the DebugBoxes because they all share this Menu Option somehow :S
                                 //Change name of this menu option, all instances have their names changed too.
                }
            });

            JMenuItem Copy = new JMenuItem(new AbstractAction() {
                private static final long serialVersionUID = -6774461986513304498L;

                @Override
                public void actionPerformed(ActionEvent e) {
                    DebugBox.this.copy();
                }
            });

            JMenuItem Clear = new JMenuItem(new AbstractAction() {
                private static final long serialVersionUID = -5567371173360543484L;

                @Override
                public void actionPerformed(ActionEvent e) {
                    DebugBox.this.setText(null);
                }
            });

            JMenuItem SelectAll = new JMenuItem(new AbstractAction() {
                private static final long serialVersionUID = -8792250195980016624L;

                @Override
                public void actionPerformed(ActionEvent e) {
                    DebugBox.this.selectAll();
                }
            });

            this.Menu.add(Copy);
            this.Menu.add(Clear);
            this.Menu.add(SelectAll);
            this.Menu.add(Debug);

            Copy.setText("Copy");
            Clear.setText("Clear");
            SelectAll.setText("Select All");
            Debug.setText("Show Debug Box");
            this.setEditable(false);
            this.add(this.Menu);

            this.addMouseListener(new MouseAdapter() {
                @Override
                public void mouseReleased(MouseEvent e) {
                    if (e.isPopupTrigger()) {
                        DebugBox.this.Menu.show(DebugBox.this, e.getX(), e.getY());
                    }
                }
            });
        }
    }
}

1 个答案:

答案 0 :(得分:2)

如果要共享Object,则需要创建Object并将Object作为参数传递给其他类。类似的东西:

JPopupMenu popup = createSharedPopupMenu();
Pane.addTab("TabOne", M.new DebugBox(500, 500, popup));
Pane.addTab("TabTwo", M.new DebugBox(500, 500, popup));

然后,您需要创建适用于任何文本组件的通用操作。 DefaultEditorKit为您提供了一些这些操作:

public JPopupMenu createSharedPopupMenu()
{
    JPopupMenu popup = new JPopupMenu()

    JMenuItem copy = new JMenuItem( new DefaultEditorKit.CopyAction() );
    popup.add( copy );
    ...

    return popup.
}

如果编辑器工具包没有为您提供操作,那么您需要创建自己的操作,并且应该扩展TextAction而不是AbstractAction。 TextAction类有一个方法,它将返回具有焦点的文本组件。因此,您可以通用方式实现Action。

此外,您不需要使用MouseListener来调用弹出窗口。您可以使用以下JComponent方法:

JComponent.setComponentPopupMenu(JPopupMenu popup)