在 Netbeans 7.2 中隐藏 TopComponent 选项卡

Question

我正在使用 Netbeans 平台版本 7.2 和 JDK 1.7 创建应用程序。我希望能够隐藏安装到编辑器位置的 TopComponent 元素上的选项卡。我在 Google 上四处搜索，在 Geertjan Wielenga 的博客上找到了 this post，它似乎准确地解释了该怎么做，但我似乎仍然无法让它发挥作用。

我的应用程序包含两个项目。其中一个是 Netbeans 模块，另一个是“Netbeans 平台应用程序”项目。该模块由三个类组成：Installer.java、NoTabsTabDisplayerUI.java 和StupidTopComponent.java。 Installer.java 非常简单，由

组成

package org.foo;

import javax.swing.UIManager;
import org.openide.modules.ModuleInstall;

public class Installer extends ModuleInstall {

    @Override
    public void restored() {
        UIManager.put("EditorTabDisplayerUI", "org.foo.NoTabsTabDisplayerUI");
    }
}

NoTabsTabDisplayerUI.java 或多或少是从 Geertjan 的博客中逐字提取的，看起来像

package org.foo;

import java.awt.Dimension;
import java.awt.Point;
import java.awt.Polygon;
import java.awt.Rectangle;
import javax.swing.DefaultSingleSelectionModel;
import javax.swing.JComponent;
import javax.swing.SingleSelectionModel;
import javax.swing.plaf.ComponentUI;
import org.netbeans.swing.tabcontrol.TabDisplayer;
import org.netbeans.swing.tabcontrol.TabDisplayerUI;

public class NoTabsTabDisplayerUI extends TabDisplayerUI {

    public NoTabsTabDisplayerUI(TabDisplayer displayer) {
        super(displayer);
    }

    public static ComponentUI createUI(JComponent jc) {
        assert jc instanceof TabDisplayer;
        return new NoTabsTabDisplayerUI((TabDisplayer) jc);
    }

    private static final int[] PTS = new int[] { 0, 0, 0 };
    @Override
    public Polygon getExactTabIndication(int i) {
        //Should never be called
        return new Polygon(PTS, PTS, PTS.length);
    }

    @Override
    public Polygon getInsertTabIndication(int i) {
        return new Polygon(PTS, PTS, PTS.length);
    }

    @Override
    public int tabForCoordinate(Point point) {
        return -1;
    }

    @Override
    public Rectangle getTabRect(int i, Rectangle rectangle) {
        return new Rectangle(0,0,0,0);
    }

    @Override
    protected SingleSelectionModel createSelectionModel() {
        return new DefaultSingleSelectionModel();
    }

    public java.lang.String getCommandAtPoint(Point point) {
        return null;
    }

    @Override
    public int dropIndexOfPoint(Point point) {
        return -1;
    }

    @Override
    public void registerShortcuts(javax.swing.JComponent jComponent) {
        //do nothing
    }

    @Override
    public void unregisterShortcuts(javax.swing.JComponent jComponent) {
        //do nothing
    }

    @Override
    protected void requestAttention(int i) {
        //do nothing
    }

    @Override
    protected void cancelRequestAttention(int i) {
        //do nothing
    }

    @Override
    public Dimension getPreferredSize(javax.swing.JComponent c) {
        return new Dimension(0, 0);
    }

    @Override
    public Dimension getMinimumSize(javax.swing.JComponent c) {
        return new Dimension(0, 0);
    }

    @Override
    public Dimension getMaximumSize(javax.swing.JComponent c) {
        return new Dimension(0, 0);
    }
}

StupidTopComponent.java 只是一个带有标签的 TopComponent。代码如下：

package org.foo;

import org.netbeans.api.settings.ConvertAsProperties;
import org.openide.awt.ActionID;
import org.openide.awt.ActionReference;
import org.openide.windows.TopComponent;
import org.openide.util.NbBundle.Messages;

/**
 * Top component which displays something.
 */
@ConvertAsProperties(
    dtd = "-//org.foo//Stupid//EN",
autostore = false)
@TopComponent.Description(
    preferredID = "StupidTopComponent",
//iconBase="SET/PATH/TO/ICON/HERE", 
persistenceType = TopComponent.PERSISTENCE_ALWAYS)
@TopComponent.Registration(mode = "editor", openAtStartup = true)
@ActionID(category = "Window", id = "org.foo.StupidTopComponent")
@ActionReference(path = "Menu/Window" /*, position = 333 */)
@TopComponent.OpenActionRegistration(
    displayName = "#CTL_StupidAction",
preferredID = "StupidTopComponent")
@Messages({
    "CTL_StupidAction=Stupid",
    "CTL_StupidTopComponent=Stupid Window",
    "HINT_StupidTopComponent=This is a Stupid window"
})
public final class StupidTopComponent extends TopComponent {

    public StupidTopComponent() {
        initComponents();
        setName(Bundle.CTL_StupidTopComponent());
        setToolTipText(Bundle.HINT_StupidTopComponent());

    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();

        org.openide.awt.Mnemonics.setLocalizedText(jLabel1, org.openide.util.NbBundle.getMessage(StupidTopComponent.class, "StupidTopComponent.jLabel1.text")); // NOI18N

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(74, 74, 74)
                .addComponent(jLabel1)
                .addContainerGap(267, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(88, 88, 88)
                .addComponent(jLabel1)
                .addContainerGap(198, Short.MAX_VALUE))
        );
    }// </editor-fold>

    // Variables declaration - do not modify
    private javax.swing.JLabel jLabel1;
    // End of variables declaration
    @Override
    public void componentOpened() {
        // TODO add custom code on component opening
    }

    @Override
    public void componentClosed() {
        // TODO add custom code on component closing
    }

    void writeProperties(java.util.Properties p) {
        // better to version settings since initial version as advocated at
        // http://wiki.apidesign.org/wiki/PropertyFiles
        p.setProperty("version", "1.0");
        // TODO store your settings
    }

    void readProperties(java.util.Properties p) {
        String version = p.getProperty("version");
        // TODO read your settings according to their version
    }
}

然后平台应用程序项目只包含这个模块。当我运行它时，它仍然显示 TopComponent 上的选项卡。

在调试器中运行它，我从来没有看到它碰到NoTabsTabDisplayerUI.java 中的任何代码。它似乎从不调用该类中的构造函数或任何其他函数。我的第一个想法是由于某种原因它没有找到课程，但我不确定如何测试是否是这种情况。

我在这里遗漏了什么明显的东西吗？

Answer 1

您需要将对 UIManager.put() 的调用包装在 Runnable 中并在 EDT 上运行它：

SwingUtilities.invokeLater(new Runnable() {

    @Override
    public void run() {
        UIManager.put("EditorTabDisplayerUI", "org.foo.NoTabsTabDisplayerUI");
    }
});

在 Geertjan 用于该博客文章的 NB 版本中，您不需要这样做。