Java Code Examples for javax.swing.JPopupMenu#getComponentCount()

private void showPopupMenu(int index, Component component, MouseEvent e) {
        JPopupMenu popup = new JPopupMenu() {
//            public void setVisible(boolean visible) {
//                if (visible) popupShowing();
//                super.setVisible(visible);
//                if (!visible) popupHidden();
//            }
        };
        
        populatePopup(popup, index, component);
        
        if (popup.getComponentCount() > 0) {
            if (e == null) {
                // TODO: invoked by keyboard? handle it? 
            } else {
                popup.show(this, e.getX(), e.getY());
            }
        }
    }
 

/**
 * Returns the index of an item in a popup menu.
 *
 * @param menu  the menu.
 * @param text  the label.
 *
 * @return The item index.
 */
private int getPopupMenuItem(JPopupMenu menu, String text) {
    int index = -1;
    for (int i = 0; (index == -1) && (i < menu.getComponentCount()); i++) {
        Component comp = menu.getComponent(i);
        if (comp instanceof JMenuItem) {
            JMenuItem item = (JMenuItem) comp;
            if (text.equals(item.getText())) {
                index = i;
            }
        }
   }
   return index;
}
 

/**
 * Returns the index of an item in a popup menu.
 *
 * @param menu  the menu.
 * @param text  the label.
 *
 * @return The item index.
 */
private int getPopupMenuItem(JPopupMenu menu, String text) {
    int index = -1;
    for (int i = 0; (index == -1) && (i < menu.getComponentCount()); i++) {
        Component comp = menu.getComponent(i);
        if (comp instanceof JMenuItem) {
            JMenuItem item = (JMenuItem) comp;
            if (text.equals(item.getText())) {
                index = i;
            }
        }
   }
   return index;
}
 

public static int findMenuItemPosition(JPopupMenu popupMenu, String name) {
    int n = popupMenu.getComponentCount();
    for (int i = 0; i < n; i++) {
        Component c = popupMenu.getComponent(i);
        if (c instanceof JMenuItem) {
            JMenuItem menuItem = (JMenuItem) c;
            if (name.equals(menuItem.getName())) {
                return i;
            }
        }
    }
    return -1;
}
 

/**
 * Returns the index of an item in a popup menu.
 *
 * @param menu  the menu.
 * @param text  the label.
 *
 * @return The item index.
 */
private int getPopupMenuItem(JPopupMenu menu, String text) {
    int index = -1;
    for (int i = 0; (index == -1) && (i < menu.getComponentCount()); i++) {
        Component comp = menu.getComponent(i);
        if (comp instanceof JMenuItem) {
            JMenuItem item = (JMenuItem) comp;
            if (text.equals(item.getText())) {
                index = i;
            }
        }
   }
   return index;
}
 

/**
 * Returns the index of an item in a popup menu.
 * 
 * @param menu  the menu.
 * @param text  the label.
 * 
 * @return The item index.
 */
private int getPopupMenuItem(JPopupMenu menu, String text) {
    int index = -1;
    for (int i = 0; (index == -1) && (i < menu.getComponentCount()); i++) {
        Component comp = menu.getComponent(i);
        if (comp instanceof JMenuItem) {
            JMenuItem item = (JMenuItem) comp;
            if (text.equals(item.getText())) {
                index = i;
            }
        }
   }
   return index;
}
 

public void displayPopup() {
    JPopupMenu menu = new JPopupMenu();
    populatePopup(menu);
    if (menu.getComponentCount() > 0) {
        Dimension size = menu.getPreferredSize();
        size.width = Math.max(size.width, getWidth());
        menu.setPreferredSize(size);
        menu.show(this, 0, getHeight());
    }
}
 

private void showPopupMenu(MouseEvent e) {
    JPopupMenu popup = new JPopupMenu();
    populatePopup(popup);
    
    if (popup.getComponentCount() > 0) {
        Dimension pref = popup.getPreferredSize();
        if (e == null) {
            popup.show(this, getWidth() / 2, -pref.height);
        } else {
            popup.show(this, e.getX(), e.getY() - pref.height);
        }
    }
}
 

private void showPopupMenu(MouseEvent e) {
    JPopupMenu popup = new JPopupMenu();
    populatePopup(popup);
    
    if (popup.getComponentCount() > 0) {
        Dimension pref = popup.getPreferredSize();
        if (e == null) {
            popup.show(this, getWidth() / 2, -pref.height);
        } else {
            popup.show(this, e.getX(), e.getY() - pref.height);
        }
    }
}
 

/**
 * Returns the index of an item in a popup menu.
 *
 * @param menu  the menu.
 * @param text  the label.
 *
 * @return The item index.
 */
private int getPopupMenuItem(JPopupMenu menu, String text) {
    int index = -1;
    for (int i = 0; (index == -1) && (i < menu.getComponentCount()); i++) {
        Component comp = menu.getComponent(i);
        if (comp instanceof JMenuItem) {
            JMenuItem item = (JMenuItem) comp;
            if (text.equals(item.getText())) {
                index = i;
            }
        }
   }
   return index;
}
 

/**
 * Add a separator to a menu if useful.
 * 
 * @param menu Menu.
 * @return Number of items added.
 */
public int addSeparator(JPopupMenu menu) {
  if ((menu == null) || (menu.getComponentCount() == 0)) {
    return 0;
  }
  Component item = menu.getComponent(menu.getComponentCount() - 1);
  if (!(item instanceof JMenuItem)) {
    return 0;
  }
  menu.add(new JSeparator());
  return 1;
}
 

/**
 * Returns the index of an item in a popup menu.
 *
 * @param menu  the menu.
 * @param text  the label.
 *
 * @return The item index.
 */
private int getPopupMenuItem(JPopupMenu menu, String text) {
    int index = -1;
    for (int i = 0; (index == -1) && (i < menu.getComponentCount()); i++) {
        Component comp = menu.getComponent(i);
        if (comp instanceof JMenuItem) {
            JMenuItem item = (JMenuItem) comp;
            if (text.equals(item.getText())) {
                index = i;
            }
        }
   }
   return index;
}
 

protected void displayPopup() {
    JPopupMenu menu = new JPopupMenu();
    populatePopup(menu);
    if (menu.getComponentCount() > 0) {
        Dimension size = menu.getPreferredSize();
        size.width = Math.max(size.width, getWidth());
        menu.setPreferredSize(size);
        
        int align = getPopupAlign();
        
        int x;
        switch (align) {
            case SwingConstants.EAST:
            case SwingConstants.NORTH_EAST:
            case SwingConstants.SOUTH_EAST:
                x = getWidth() - size.width;
                break;
            default:
                x = 0;
                break;
        }
        
        int y;
        switch (align) {
            case SwingConstants.NORTH:
            case SwingConstants.NORTH_EAST:
            case SwingConstants.NORTH_WEST:
                y = -size.height;
                break;
            default:
                y = getHeight();
                break;
        }
        
        menu.show(this, x, y);
    }
}
 

private void showPopupMenu(MouseEvent e) {
    JPopupMenu popup = new JPopupMenu() {
        public void setVisible(boolean visible) {
            if (visible) popupShowing();
            super.setVisible(visible);
            if (!visible) popupHidden();
        }
    };
    
    int row = getSelectedRow();
    Object value = getValueForRow(row);
    Object userValue = getUserValueForRow(row);
    populatePopup(popup, value, userValue);
    
    if (popup.getComponentCount() > 0) {
        if (e == null) {
            boolean b = row == -1;
            int c = b ? -1 : convertColumnIndexToView(mainColumn);
            Rectangle t = b ? getVisibleRect() : getCellRect(row, c, false);
            Dimension s = popup.getPreferredSize();
            int x = t.x + (t.width - s.width) / 2;
            int y = t.y + (b ? (t.height - s.height) / 2 : getRowHeight() - 4);
            popup.show(this, Math.max(x, 0), Math.max(y, 0));
        } else {
            popup.show(this, e.getX(), e.getY());
        }
    }
}
 

private void mouseOnGamesList(final MouseEvent mouseEvent) {
  if (!mouseEvent.isPopupTrigger()) {
    return;
  }
  if (!SwingUtilities.isRightMouseButton(mouseEvent)) {
    return;
  }
  final int selectedIndex = gameTable.getSelectedRow();
  if (selectedIndex == -1) {
    return;
  }

  final JPopupMenu menu = new JPopupMenu();

  List.of(
          SwingAction.of("Join Game", this::joinGame),
          SwingAction.of("Host Game", () -> hostGame(lobbyUri)),
          ShowPlayersAction.builder()
              .parentWindow(parent)
              .gameIdSelection(
                  () ->
                      gameTableModel.getGameListingForRow(
                          gameTable.convertRowIndexToModel(gameTable.getSelectedRow())))
              .playerToLobbyConnection(lobbyClient.getPlayerToLobbyConnection())
              .build()
              .buildSwingAction())
      .forEach(menu::add);

  if (lobbyClient.isModerator()) {
    final Collection<Action> generalAdminActions = getGeneralAdminGamesListContextActions();
    if (!generalAdminActions.isEmpty()) {
      menu.addSeparator();
      generalAdminActions.forEach(menu::add);
    }
  }

  if (menu.getComponentCount() > 0) {
    menu.show(gameTable, mouseEvent.getX(), mouseEvent.getY());
  }
}
 

/**
 * Returns the index of an item in a popup menu.
 * 
 * @param menu  the menu.
 * @param text  the label.
 * 
 * @return The item index.
 */
private int getPopupMenuItem(JPopupMenu menu, String text) {
    int index = -1;
    for (int i = 0; (index == -1) && (i < menu.getComponentCount()); i++) {
        Component comp = menu.getComponent(i);
        if (comp instanceof JMenuItem) {
            JMenuItem item = (JMenuItem) comp;
            if (text.equals(item.getText())) {
                index = i;
            }
        }
   }
   return index;
}
 

/**
 * Creates a popup menu for the panel.
 *
 * @param properties  include a menu item for the chart property editor.
 * @param save  include a menu item for saving the chart.
 * @param print  include a menu item for printing the chart.
 * @param zoom  include menu items for zooming.
 *
 * @return The popup menu.
 */
protected JPopupMenu createPopupMenu(boolean properties,
                                     boolean save, 
                                     boolean print, 
                                     boolean zoom) {
    
   JPopupMenu result = super.createPopupMenu(properties, save, print, zoom);
   int zoomInIndex  = getPopupMenuItem(result, "Zoom In");
   int zoomOutIndex = getPopupMenuItem(result, "Zoom Out");
   int autoIndex     = getPopupMenuItem(result, "Auto Range");
   if (zoom) {
       JMenuItem zoomIn = new JMenuItem("Zoom In");
       zoomIn.setActionCommand(POLAR_ZOOM_IN_ACTION_COMMAND);
       zoomIn.addActionListener(this);
      
       JMenuItem zoomOut = new JMenuItem("Zoom Out");
       zoomOut.setActionCommand(POLAR_ZOOM_OUT_ACTION_COMMAND);
       zoomOut.addActionListener(this);
      
       JMenuItem auto = new JMenuItem("Auto Range");
       auto.setActionCommand(POLAR_AUTO_RANGE_ACTION_COMMAND);
       auto.addActionListener(this);
      
       if (zoomInIndex != -1) {
           result.remove(zoomInIndex);
       }
       else {
           zoomInIndex = result.getComponentCount() - 1;
       }
       result.add(zoomIn, zoomInIndex);
       if (zoomOutIndex != -1) {
           result.remove(zoomOutIndex);
       }
       else {
           zoomOutIndex = zoomInIndex + 1;
       }
       result.add(zoomOut, zoomOutIndex);
       if (autoIndex != -1) {
           result.remove(autoIndex);
       }
       else {
           autoIndex = zoomOutIndex + 1;
       }
       result.add(auto, autoIndex);
   }
   return result;
}
 

@Override
public void actionPerformed(ActionEvent evt){
  if(annotationEditor == null) return;
  //this action either creates a new annotation or starts editing an 
  //existing one. In either case we need first to make sure that the current
  //annotation is finished editing.
  if(!annotationEditor.editingFinished()) return;
  if(textLocation == -1) return;
  JPopupMenu popup = new JPopupMenu();

  //check for selection hovering
  if(textPane.getSelectedText() != null
      && textPane.getSelectionStart() <= textLocation
      && textPane.getSelectionEnd() >= textLocation){
    //add 'New annotation' to the popup menu
    popup.add(new NewAnnotationAction(textPane.getSelectedText()));
    popup.addSeparator();
  }

  //check for annotations at location
  for(SetHandler setHandler : setHandlers) {
    for(Annotation ann : setHandler.set.get(
          Math.max(0l, textLocation-1),
          Math.min(document.getContent().size(), textLocation+1))) {
      if(setHandler.getTypeHandler(ann.getType()).isSelected()) {
        AnnotationDataImpl annotAtPoint =
          new AnnotationDataImpl(setHandler.set, ann);
        //add annotations to edit to the popup menu
        popup.add(new HighlightMenuItem(
          new EditAnnotationAction(annotAtPoint),
          annotAtPoint.getAnnotation().getStartNode().getOffset().intValue(),
          annotAtPoint.getAnnotation().getEndNode().getOffset().intValue(),
          popup));
      }
    }
  }

  if (popup.getComponentCount() == 0) {
    // nothing to do
  } else if(popup.getComponentCount() == 1
    || (popup.getComponentCount() == 2
     && popup.getComponent(1) instanceof JSeparator)) {
    //only one annotation, start the editing directly
    //or only one selection, add new annotation
    ((JMenuItem)popup.getComponent(0)).getAction().actionPerformed(evt);
  } else { //mouse hover a selection AND annotation(s)
    try{
      Rectangle rect =  textPane.modelToView(textLocation);
      //display the popup
      popup.show(textPane, rect.x + 10, rect.y);
    }catch(BadLocationException ble){
      throw new GateRuntimeException(ble);
    }
  }
}
 

/**
 * Creates a popup menu for the panel.
 *
 * @param properties  include a menu item for the chart property editor.
 * @param save  include a menu item for saving the chart.
 * @param print  include a menu item for printing the chart.
 * @param zoom  include menu items for zooming.
 *
 * @return The popup menu.
 */
protected JPopupMenu createPopupMenu(boolean properties,
                                     boolean save,
                                     boolean print,
                                     boolean zoom) {

   JPopupMenu result = super.createPopupMenu(properties, save, print, zoom);
   int zoomInIndex  = getPopupMenuItem(result, "Zoom In");
   int zoomOutIndex = getPopupMenuItem(result, "Zoom Out");
   int autoIndex     = getPopupMenuItem(result, "Auto Range");
   if (zoom) {
       JMenuItem zoomIn = new JMenuItem("Zoom In");
       zoomIn.setActionCommand(POLAR_ZOOM_IN_ACTION_COMMAND);
       zoomIn.addActionListener(this);

       JMenuItem zoomOut = new JMenuItem("Zoom Out");
       zoomOut.setActionCommand(POLAR_ZOOM_OUT_ACTION_COMMAND);
       zoomOut.addActionListener(this);

       JMenuItem auto = new JMenuItem("Auto Range");
       auto.setActionCommand(POLAR_AUTO_RANGE_ACTION_COMMAND);
       auto.addActionListener(this);

       if (zoomInIndex != -1) {
           result.remove(zoomInIndex);
       }
       else {
           zoomInIndex = result.getComponentCount() - 1;
       }
       result.add(zoomIn, zoomInIndex);
       if (zoomOutIndex != -1) {
           result.remove(zoomOutIndex);
       }
       else {
           zoomOutIndex = zoomInIndex + 1;
       }
       result.add(zoomOut, zoomOutIndex);
       if (autoIndex != -1) {
           result.remove(autoIndex);
       }
       else {
           autoIndex = zoomOutIndex + 1;
       }
       result.add(auto, autoIndex);
   }
   return result;
}
 

/**
 * Creates a popup menu for the panel.
 *
 * @param properties  include a menu item for the chart property editor.
 * @param save  include a menu item for saving the chart.
 * @param print  include a menu item for printing the chart.
 * @param zoom  include menu items for zooming.
 *
 * @return The popup menu.
 */
@Override
protected JPopupMenu createPopupMenu(boolean properties, boolean save,
        boolean print, boolean zoom) {

   JPopupMenu result = super.createPopupMenu(properties, save, print, zoom);
   int zoomInIndex = getPopupMenuItem(result,
           localizationResources.getString("Zoom_In"));
   int zoomOutIndex = getPopupMenuItem(result,
           localizationResources.getString("Zoom_Out"));
   int autoIndex = getPopupMenuItem(result,
           localizationResources.getString("Auto_Range"));
   if (zoom) {
       JMenuItem zoomIn = new JMenuItem(
               localizationResources.getString("Zoom_In"));
       zoomIn.setActionCommand(POLAR_ZOOM_IN_ACTION_COMMAND);
       zoomIn.addActionListener(this);

       JMenuItem zoomOut = new JMenuItem(
               localizationResources.getString("Zoom_Out"));
       zoomOut.setActionCommand(POLAR_ZOOM_OUT_ACTION_COMMAND);
       zoomOut.addActionListener(this);

       JMenuItem auto = new JMenuItem(
               localizationResources.getString("Auto_Range"));
       auto.setActionCommand(POLAR_AUTO_RANGE_ACTION_COMMAND);
       auto.addActionListener(this);

       if (zoomInIndex != -1) {
           result.remove(zoomInIndex);
       }
       else {
           zoomInIndex = result.getComponentCount() - 1;
       }
       result.add(zoomIn, zoomInIndex);
       if (zoomOutIndex != -1) {
           result.remove(zoomOutIndex);
       }
       else {
           zoomOutIndex = zoomInIndex + 1;
       }
       result.add(zoomOut, zoomOutIndex);
       if (autoIndex != -1) {
           result.remove(autoIndex);
       }
       else {
           autoIndex = zoomOutIndex + 1;
       }
       result.add(auto, autoIndex);
   }
   return result;
}