Как я могу щелкнуть правой кнопкой мыши на ячейке Java JList, выберите эту ячейку, как если бы щелкнуть левой кнопкой мыши?

Question

Я устанавливаю JPopupMenu, который покажет, будет ли пользователь щелкать правой кнопкой мыши по ячейке в JList, но прямо сейчас, когда ячейка должна быть выбрана, чтобы показать JPopupMenu. Мне интересно, как я могу выбрать эту ячейку, щелкнув правой кнопкой мыши, а затем покажу JPopupMenu, как сейчас. Я также показываю меню, когда ни один элемент не выбран, и мышь не находится над любыми элементами в списке.

Код:

import java.awt.Rectangle; 
import java.awt.event.ActionEvent; 
import java.awt.event.MouseEvent; 
import java.awt.event.MouseListener; 

import javax.swing.AbstractAction; 
import javax.swing.Action; 
import javax.swing.ActionMap; 
import javax.swing.BorderFactory; 
import javax.swing.DefaultListModel; 
import javax.swing.DropMode; 
import javax.swing.JList; 
import javax.swing.JPopupMenu; 
import javax.swing.ListSelectionModel; 
import javax.swing.TransferHandler; 

public class CardZone extends JList implements MouseListener{ 
    private static final long serialVersionUID = 1L; 
    private DefaultListModel model; 
    private TransferHandler handler; 
    private JPopupMenu popupMenu = null; 
    private Planeswalker owner; 
    private String name; 
    private CardImageCellRenderer cellRenderer; 

    public CardZone(Planeswalker owner, String name) { 
     this.owner = owner; 
     this.name = name; 

     cellRenderer = new CardImageCellRenderer(150); 

     model = new DefaultListModel(); 
     setModel(model); 
     setCellRenderer(cellRenderer); 

     setDropMode(DropMode.INSERT); 
     setDragEnabled(true); 
     setSelectionMode(ListSelectionModel.SINGLE_SELECTION); 
     handler = new CardZoneTransferHandler(); 
     setTransferHandler(handler); 

     addMouseListener(this); 

     ActionMap map = getActionMap(); 
     AbstractAction dummy = new AbstractAction() { 
      private static final long serialVersionUID = 1L; 

      @Override public void actionPerformed(ActionEvent e) {} 
     }; 
     map.put(TransferHandler.getCutAction().getValue(Action.NAME), dummy); 
     map.put(TransferHandler.getCopyAction().getValue(Action.NAME), dummy); 
     map.put(TransferHandler.getPasteAction().getValue(Action.NAME), dummy); 

     setBorder(BorderFactory.createTitledBorder(name)); 

     setFixedCellWidth(150); 
     setFixedCellHeight(150); 
    } 

    public void setPopupMenu(JPopupMenu menu){ 
     this.popupMenu = menu; 
    } 

// Mouse Listener Stuff 
    public void check(MouseEvent e) { 
     if (e.isPopupTrigger()) { //if the event shows the menu 
      //Only show the list's popup menu if an item is not selected and positioned where the mouse was right-clicked 
      int closestIndexToClick = locationToIndex(e.getPoint()); 
      Rectangle cellBounds = getCellBounds(closestIndexToClick, closestIndexToClick); 
      if(cellBounds != null && !cellBounds.contains(e.getPoint())){ 
       if(popupMenu != null) 
        popupMenu.show(this, e.getX(), e.getY()); //and show the menu 
      }else{ 
       // If the mouse was clicked over a selected card then show the card's popup menu 
       Card selectedCard = (Card)getSelectedValue();    
       JPopupMenu cardsMenu = null; 
       if(selectedCard != null){ 
        cardsMenu = selectedCard.getPopupMenu(); 
        if(cardsMenu != null) 
         cardsMenu.show(this, e.getX(), e.getY()); 
       } 
      } 
     } 
    } 

    @Override 
    public void mouseClicked(MouseEvent me) {  
    } 

    @Override 
    public void mouseEntered(MouseEvent me) {  
    } 

    @Override 
    public void mouseExited(MouseEvent me) {   
    } 

    @Override 
    public void mousePressed(MouseEvent me) { 
     check(me); 
    } 

    @Override 
    public void mouseReleased(MouseEvent me) { 
     check(me); 
    } 
// End Mouse Listener Stuff 
} 


import java.util.Vector; 

import javax.swing.JPanel; 
import javax.swing.JPopupMenu; 

public class Card extends JPanel{ 
    private static final long serialVersionUID = 1L; 
    private String name; 
    private String type; 
    private String subType; 
    private String manaCost; 
    private String manaItProvides; 
    private String flippedName; 
    private Boolean isFlipped; 
    private Boolean isTapped; 
    private Vector<String> canFetch = null; 
    private JPopupMenu popupMenu = null; 
    private CardZone zone; 

    public Card(String name, String type, String subType, String manaCost, String manaItProvided, Vector<String> canFetch) { 
     this.name = name; 
     this.type = type; 
     this.subType = subType; 
     this.manaCost = manaCost; 
     this.manaItProvides = manaItProvided; 
     this.flippedName = ""; 
     this.isFlipped = false; 
     this.isTapped = false; 

     this.canFetch = new Vector<String>(); 

     if(canFetch != null) 
      this.canFetch.addAll(canFetch); 

     addMouseListener(new PopClickListener(popupMenu)); 
    }  

    public String getManaItProvides(){ 
     return manaItProvides; 
    } 

    public int getManaCost(char color){ 
     int cost = 0; 
     for(int i = 0; i < manaCost.length(); i++) { 
      if(manaCost.charAt(i) == color) 
       cost++; 
     } 
     return cost; 
    } 

    public String getName() { 
     return name; 
    } 

    public String getType() { 
     return type; 
    } 

    public String getSubType() { 
     return subType; 
    } 

    public Boolean isFlipped(){ 
     return isFlipped; 
    } 

    public Boolean isTapped(){ 
     return isTapped; 
    } 

    public String getFlippedName(){ 
     return flippedName; 
    } 

    public void unFlip(){ 
     isFlipped = false; 
    } 

    public void flip(String flippedName){ 
     this.flippedName = flippedName; 
     isFlipped = true; 
     zone.repaint(); 
    } 

    public void tap(){ 
     isTapped = true; 
    } 

    public void untap(){ 
     isTapped = false; 
    } 

    public void swapTapped(){ 
     if(isTapped){ 
      untap(); 
     }else{ 
      tap(); 
     } 
    } 

    public Vector<String> getFetchables(){ 
     return canFetch; 
    } 

    public void setPopupMenu(JPopupMenu menu){ 
     this.popupMenu = menu; 
    } 

    public JPopupMenu getPopupMenu(){ 
     return popupMenu; 
    } 

    public void setCurrentCardZone(CardZone zone){ 
     this.zone = zone; 
    } 

    public CardZone getCurrentCardZone(){ 
     return this.zone; 
    } 
} 

import java.awt.event.MouseAdapter; 
import java.awt.event.MouseEvent; 

import javax.swing.JPopupMenu; 

    class PopClickListener extends MouseAdapter { 
     private JPopupMenu popupMenu; 

     public PopClickListener(JPopupMenu popupMenu){ 
      this.popupMenu = popupMenu; 
     } 

     public void mousePressed(MouseEvent e){ 
      if (e.isPopupTrigger()) 
       doPop(e); 
     } 

     public void mouseReleased(MouseEvent e){ 
      if (e.isPopupTrigger()) 
       doPop(e); 
     } 

     private void doPop(MouseEvent e){ 
      if(popupMenu != null) 
       popupMenu.show(e.getComponent(), e.getX(), e.getY()); 
     } 
    } 

Answer 1

Добавить MouseListener в JList. Что-то вроде:

list.addMouseListener(new MouseAdapter() 
{ 
    public void mousePressed(MouseEvent e) 
    { 
     if (SwingUtilities.isRightMouseButton(e)) 
     { 
      JList list = (JList)e.getSource(); 
      int row = list.locationToIndex(e.getPoint()); 
      list.setSelectedIndex(row); 
     } 
    } 

});