Comment modifier l'élément de visualisation de l'arborescence en fonction de la sélection du menu contextuel

Question

Je souhaite modifier l'élément de visualisation de l'arborescence en fonction de l'option de menu contextuel. Fondamentalement, j'ai besoin de mettre à jour la valeur de l'élément qui est affichée. Si je double-clique sur l'élément viewer de l'arbre, j'ai pu mettre à jour la valeur, mais à travers le menu contextuel, je devrais être en mesure de le faire.

Exemple de code pour ajouter le menu contextuel:

protected def void createContextMenu(Viewer viewer) { 
    val MenuManager contextMenu = new MenuManager("Menu"); // $NON-NLS-1$ 
    contextMenu.setRemoveAllWhenShown(true); 
    contextMenu.addMenuListener(new IMenuListener() { 

     public override void menuAboutToShow(IMenuManager mgr) { 
       fillContextMenu(mgr); 
     } 
    }); 

    val Menu menu = contextMenu.createContextMenu(viewer.getControl()); 
    viewer.getControl().setMenu(menu); 

} 

/** 
* Fill dynamic context menu 
* 
* @param contextMenu 
*/ 
protected def void fillContextMenu(IMenuManager contextMenu) { 
    contextMenu.add(new GroupMarker(IWorkbenchActionConstants.MB_ADDITIONS)); 

    contextMenu.add(new Action("Rename") { 

     public override void run() { 
      val selectedElement = (treeViewer.selection as IStructuredSelection).firstElement 
     } 
    }); 
} 

Answer 1

Voir si cela aide ou laissez-moi savoir autrement

package myFolder; 

import org.eclipse.jface.viewers.ILabelProvider; 
import org.eclipse.jface.viewers.ILabelProviderListener; 
import org.eclipse.jface.viewers.ITreeContentProvider; 
import org.eclipse.jface.viewers.TreeViewer; 
import org.eclipse.jface.viewers.TreeViewerColumn; 
import org.eclipse.jface.viewers.Viewer; 
import org.eclipse.swt.SWT; 
import org.eclipse.swt.events.MenuEvent; 
import org.eclipse.swt.events.MenuListener; 
import org.eclipse.swt.graphics.Image; 
import org.eclipse.swt.layout.FillLayout; 
import org.eclipse.swt.widgets.Display; 
import org.eclipse.swt.widgets.Event; 
import org.eclipse.swt.widgets.Listener; 
import org.eclipse.swt.widgets.Menu; 
import org.eclipse.swt.widgets.MenuItem; 
import org.eclipse.swt.widgets.Shell; 
import org.eclipse.swt.widgets.TreeItem; 

public class trying { 

public static void main(String[] args){ 
    Display display = new Display(); 
    Shell shell = new Shell(display); 
    shell.setLayout(new FillLayout()); 
    shell.setSize(300,300); 

    TreeViewer viewer = new TreeViewer(shell); 
    viewer.getTree().setHeaderVisible(true); 
    viewer.getTree().setLinesVisible(true); 

    viewer.setContentProvider(new ITreeContentProvider() { 

     @Override 
     public void dispose() { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public void inputChanged(Viewer arg0, Object arg1, Object arg2) { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public Object[] getChildren(Object arg0) { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public Object[] getElements(Object arg0) { 
      // TODO Auto-generated method stub 
      return new String[]{"Hoshe","Irani"}; 
     } 

     @Override 
     public Object getParent(Object arg0) { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public boolean hasChildren(Object arg0) { 
      // TODO Auto-generated method stub 
      return false; 
     } 


    }); 
    viewer.setLabelProvider(new ILabelProvider(){ 

     @Override 
     public void addListener(ILabelProviderListener arg0) { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public void dispose() { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public boolean isLabelProperty(Object arg0, String arg1) { 
      // TODO Auto-generated method stub 
      return false; 
     } 

     @Override 
     public void removeListener(ILabelProviderListener arg0) { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public Image getImage(Object arg0) { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public String getText(Object arg0) { 
      // TODO Auto-generated method stub 
      return "hoshe"; 
     } 


    }); 
    viewer.setInput("Hoshe");    

    Menu popupMenu = new Menu(viewer.getControl()); 
    MenuItem newItem = new MenuItem(popupMenu, SWT.CHECK); 
    newItem.setText("New"); 
    MenuItem refreshItem = new MenuItem(popupMenu, SWT.CHECK); 
    refreshItem.setText("Refresh"); 
    MenuItem deleteItem = new MenuItem(popupMenu, SWT.CHECK); 
    deleteItem.setText("Delete"); 

    popupMenu.addMenuListener(new MenuListener() { 

     @Override 
     public void menuShown(MenuEvent arg0) { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public void menuHidden(MenuEvent arg0) { 
      // TODO Auto-generated method stub 
      display.asyncExec(new Runnable() { 

       @Override 
       public void run() { 
        // TODO Auto-generated method stub 
        TreeItem [] arr = viewer.getTree().getSelection(); 
        for(MenuItem item2 : popupMenu.getItems()){ 
         boolean bool1 = item2.getSelection(); 
          if(bool1){ 
           arr[0].setText(item2.getText()); 
           item2.setSelection(false); 
          } 
        } 
       } 
      }); 

     } 
    }); 

    viewer.getTree().setMenu(popupMenu); 
    shell.open(); 
    while(!shell.isDisposed()){ 
     if(!display.readAndDispatch()) 
      display.sleep(); 
    } 
    display.dispose(); 
} 

}