为什么要消除TopComponent上的JavaFX内容？

时间：2012-05-16 12:41:35

标签： java javafx netbeans-7 javafx-2 netbeans-platform

我遇到的问题可能是由于缺乏对Netbeans平台（7.1.2）或JavaFX 2的一些原则的理解。我想添加一个非常简单的JFXPanel { {1}}到作为TopComponent的子项的Swing Scene。我通过以下代码实现了这个目标：

JPanel

编译没有问题，当我第一次显示 public accexTopComponent() { initComponents(); setName(Bundle.CTL_accexTopComponent()); setToolTipText(Bundle.HINT_accexTopComponent()); putClientProperty(TopComponent.PROP_CLOSING_DISABLED, Boolean.TRUE); //Begin of my code myFX = new JFXPanel(); //myFX is a static JFXPanel Platform.runLater(new Runnable() { @Override public void run() { myFX.setScene(new Scene(ButtonBuilder.create().minHeight(40.0).minWidth(40.0).build())); } }); jPanel1.add(myFX); } 时，会显示JavaFX Button。但是只要组件被隐藏并再次显示，JavaFX TopComponent就会消失，而其他孩子仍然可见。

为什么JavaFX内容会消失？

编辑：

我现在包含整个TopComponent的源代码。我想这就是你需要自己测试的全部内容。我没有更改任何其他文件。 

Button

在我的例子中，这个/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package de.jeed.nbgan.accexplorer; import java.awt.Color; import javafx.application.Platform; import javafx.embed.swing.JFXPanel; import javafx.scene.Scene; import javafx.scene.control.ButtonBuilder; import javafx.scene.text.TextBuilder; import javafx.scene.web.WebView; import javafx.scene.web.WebViewBuilder; 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 = "-//de.jeed.nbgan.accexplorer//accex//EN", autostore = false) @TopComponent.Description(preferredID = "accexTopComponent", //iconBase="SET/PATH/TO/ICON/HERE", persistenceType = TopComponent.PERSISTENCE_ALWAYS) @TopComponent.Registration(mode = "explorer", openAtStartup = true) @ActionID(category = "Window", id = "de.jeed.nbgan.accexplorer.accexTopComponent") @ActionReference(path = "Menu/Window" /* * , position = 333 */) @TopComponent.OpenActionRegistration(displayName = "#CTL_accexAction", preferredID = "accexTopComponent") @Messages({ "CTL_accexAction=accex", "CTL_accexTopComponent=Konten-Explorer", "HINT_accexTopComponent=Durchsuchen von Abteilungen und Konten" }) public final class accexTopComponent extends TopComponent { static JFXPanel myFX; public accexTopComponent() { initComponents(); setName(Bundle.CTL_accexTopComponent()); setToolTipText(Bundle.HINT_accexTopComponent()); putClientProperty(TopComponent.PROP_CLOSING_DISABLED, Boolean.TRUE); myFX = new JFXPanel(); Platform.runLater(new Runnable() { @Override public void run() { myFX.setScene(new Scene(ButtonBuilder.create().minHeight(40.0).minWidth(40.0).build())); } }); jPanel1.add(myFX); } /** * 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() { jPanel1 = new javax.swing.JPanel(); jPanel1.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED)); jPanel1.setLayout(new java.awt.GridBagLayout()); 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(54, 54, 54) .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 193, javax.swing.GroupLayout.PREFERRED_SIZE) .addContainerGap(153, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(33, 33, 33) .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 193, javax.swing.GroupLayout.PREFERRED_SIZE) .addContainerGap(74, Short.MAX_VALUE)) ); }// </editor-fold> // Variables declaration - do not modify private javax.swing.JPanel jPanel1; // 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 } } 是一个名为AccountExplorer的组件的一部分，它引用了JavaFX并被一个普通的NB平台应用程序引用。

3 个答案:

答案 0 :(得分：20)

试试这个：

Platform.setImplicitExit(false);

答案 1 :(得分：4)

我们遇到了同样的问题。基于以下线程，我们假设一旦面板不再可见，JavaFX平台将自动退出，因为所有JavaFX gui元素都不再可见。

该假设基于以下信息：
https://forums.oracle.com/forums/thread.jspa?messageID=10287328和
https://forums.oracle.com/forums/thread.jspa?threadID=2390971

在我们的环境中进行的第一次尝试是在代码中的某处添加一个虚拟JFXPanel，并将其保留在那里，直到你的程序出口似乎工作。

第二次尝试你的代码也有效：

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package de.jeed.nbgan.accexplorer;

import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.geometry.Rectangle2D;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.ButtonBuilder;
import javafx.scene.paint.Color;
import javafx.stage.Modality;
import javafx.stage.Screen;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
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 = "-//de.jeed.nbgan.accexplorer//accex//EN",
autostore = false)
@TopComponent.Description(preferredID = "accexTopComponent",
//iconBase="SET/PATH/TO/ICON/HERE", 
persistenceType = TopComponent.PERSISTENCE_ALWAYS)
@TopComponent.Registration(mode = "explorer", openAtStartup = true)
@ActionID(category = "Window", id = "de.jeed.nbgan.accexplorer.accexTopComponent")
@ActionReference(path = "Menu/Window" /*
 * , position = 333
 */)
@TopComponent.OpenActionRegistration(displayName = "#CTL_accexAction",
preferredID = "accexTopComponent")
@Messages({
    "CTL_accexAction=accex",
    "CTL_accexTopComponent=Konten-Explorer",
    "HINT_accexTopComponent=Durchsuchen von Abteilungen und Konten"
})
public final class accexTopComponent extends TopComponent {

    static JFXPanel myFX;
    static JFXPanel myDummyFXtoKeepJavaFxRunning;

    public accexTopComponent() {
        initComponents();
        setName(Bundle.CTL_accexTopComponent());
        setToolTipText(Bundle.HINT_accexTopComponent());
        putClientProperty(TopComponent.PROP_CLOSING_DISABLED, Boolean.TRUE);
        myFX = new JFXPanel();
        myDummyFXtoKeepJavaFxRunning = new JFXPanel();
        Platform.runLater(new Runnable() {

            @Override
            public void run() {
                // Actual FX code that will be hidden/shown
                myFX.setScene(new Scene(ButtonBuilder.create().minHeight(40.0).minWidth(40.0).build()));

                // Workaround
                Stage dummyPopup = new Stage();
                dummyPopup.initModality(Modality.NONE);
                // set as utility so no iconification occurs
                dummyPopup.initStyle(StageStyle.UTILITY);
                // set opacity so the window cannot be seen
                dummyPopup.setOpacity(0d);
                // not necessary, but this will move the dummy stage off the screen
                final Screen screen = Screen.getPrimary();
                final Rectangle2D bounds = screen.getVisualBounds();
                dummyPopup.setX(bounds.getMaxX());
                dummyPopup.setY(bounds.getMaxY());
                // create/add a transparent scene
                final Group root = new Group();
                dummyPopup.setScene(new Scene(root, 1d, 1d, Color.TRANSPARENT));
                // show the dummy stage
                dummyPopup.show();

                // size back to scene size
                dummyPopup.sizeToScene();   

                // if you centered it before hiding
                //dummyPopup.centerOnScreen();      
            }
        });

        jPanel1.add(myFX);
    }

    /**
     * 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() {

        jPanel1 = new javax.swing.JPanel();

        jPanel1.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));
        jPanel1.setLayout(new java.awt.GridBagLayout());

        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(54, 54, 54)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 193, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(153, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(33, 33, 33)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 193, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(74, Short.MAX_VALUE))
        );
    }// </editor-fold>                        
    // Variables declaration - do not modify                     
    private javax.swing.JPanel jPanel1;
    // 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
    }
}

答案 2 :(得分：1)

我遇到了同样的问题： 我不仅有顶级组件的问题，而且还有我的模态对话窗口。在某些操作系统上，它们似乎首先（Windows）在其他操作系统上工作，对话框从一个黑色的空盒子（linux）开始。在使用对话框（通常在单击按钮后）的某些对话框（在Windows下）时，对话框也会变空（通常在第六次单击后左右）。 当鼠标移动（不点击）时，它们重新出现（但不是其余的）

我也有效果（至少在windows下），最小化和恢复主窗口会产生一个空窗口。

但是：（!!!!!） 我发现调整主窗口的大小或用鼠标对话框会带回内容！ 因此，我认为你对先前死亡的假设不是原因（为什么它应该回来）。

对于Dialogs我找到了一个解决方案： 使窗口的场景成为类成员，以便稍后在以下repaint（）方法中访问它：

  /**
   * force repaint by re-setting the scene
   * This solves a repainting bug in JavaFx 1.8.05
   */
  private void repaint(){
    setScene(null);
    Platform.runLater(new Runnable() {
      @Override
      public void run() {
        setScene(scene);
      }
    });
  }

在对话框中，我在showModal（）之前和每个按钮事件结束时使用repaint（） - ＆gt;工作良好 ：-） 但我发现了一个事件，我可以在最小化主窗口后调用repaint（）。 现在是一个新的神秘但解决方案： 如果我将show（）放在MainWindow的show（）之前，它一切正常。我不知道为什么......

但我绝对认为这完全是关于JavaFX中的一个错误，希望将在下一个版本中修复。

祝你好运

英戈

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