JTableとCombobox。右クリックで開く

Question

私はテーブルを作成しました。このテーブルでは、特定の行がコンボボックスで編集可能です。このコンボボックスを右クリックして開き、左クリックしないでください。私はいくつかのことを試してみましたが、私は、これは私の最も近いアプローチだと思う：

resultsTable.addMouseListener(new MouseAdapter() { 
      @Override 
      public void mouseClicked(java.awt.event.MouseEvent evt) { 


       Point p = new Point(evt.getX(), evt.getY()); 
       int row = resultsTable.rowAtPoint(p); 
       int column = resultsTable.columnAtPoint(p); 

       if (resultsTable.getModel().isCellEditable(row, column)) { 
        if (SwingUtilities.isRightMouseButton(evt)) { 
         resultsTable.setRowSelectionInterval(row, row); 
         resultsTable.setColumnSelectionInterval(column, column); 

         resultsTable.editCellAt(row, column); 
         StatusComboBox box = (StatusComboBox) resultsTable.getModel().getValueAt(row, column); 
         box.setVisible(true); 
         box.showPopup(); 
        } 
       } 
      } 
     }); 

しかし、それは私に次のエラー得られます）box.showPopup（によって引き起こされると

java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location 
at java.awt.Component.getLocationOnScreen_NoTreeLock(Component.java:2062) 
at java.awt.Component.getLocationOnScreen(Component.java:2036) 
at javax.swing.JPopupMenu.show(JPopupMenu.java:948) 
at javax.swing.plaf.basic.BasicComboPopup.show(BasicComboPopup.java:209) 
at javax.swing.plaf.basic.BasicComboBoxUI.setPopupVisible(BasicComboBoxUI.java:877) 
at javax.swing.JComboBox.setPopupVisible(JComboBox.java:816) 
at javax.swing.JComboBox.showPopup(JComboBox.java:801) 
at org.zaproxy.zap.extension.authorisationChecker.view.AuthorisationCheckerStatusPanel$1.mouseClicked(AuthorisationCheckerStatusPanel.java:154) 
at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270) 
at java.awt.Component.processMouseEvent(Component.java:6536) 
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324) 
at java.awt.Component.processEvent(Component.java:6298) 
at java.awt.Container.processEvent(Container.java:2236) 
at java.awt.Component.dispatchEventImpl(Component.java:4889) 
at java.awt.Container.dispatchEventImpl(Container.java:2294) 
at java.awt.Component.dispatchEvent(Component.java:4711) 
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888) 
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4534) 
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466) 
at java.awt.Container.dispatchEventImpl(Container.java:2280) 
at java.awt.Window.dispatchEventImpl(Window.java:2746) 
at java.awt.Component.dispatchEvent(Component.java:4711) 
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) 
at java.awt.EventQueue.access$500(EventQueue.java:97) 
at java.awt.EventQueue$3.run(EventQueue.java:709) 
at java.awt.EventQueue$3.run(EventQueue.java:703) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) 
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90) 
at java.awt.EventQueue$4.run(EventQueue.java:731) 
at java.awt.EventQueue$4.run(EventQueue.java:729) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) 
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) 
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) 
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) 
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) 
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82) 

を。

editCellAtにコンボボックスが表示されるため、このエラーは分かりません。それは（明らかに^^）コンボボックスを開けません。

ありがとうございます！

Answer 1

セルのエディタとして使用されているコンボボックスにアクセスする必要があります。

Basicのコードは次のようになります。

int row = table.rowAtPoint(e.getPoint()); 
int column = table.columnAtPoint(e.getPoint()); 
table.changeSelection(row, column, false, false); 
table.editCellAt(row, column); 
Component c = table.getEditorComponent(); 

if (c instanceof JComboBox) 
{ 
    JComboBox comboBox = (JComboBox)c; 
    comboBox.showPopup(); 
}