org.eclipse.ote.ui.eviewer/src/org/eclipse/ote/ui/eviewer/action/RemoveColumnAction.java

/*******************************************************************************
 * Copyright (c) 2013 Boeing.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Boeing - initial API and implementation
 *******************************************************************************/
package org.eclipse.ote.ui.eviewer.action;

import java.util.HashSet;

import org.eclipse.jface.action.Action;
import org.eclipse.ote.ui.eviewer.view.ElementContentProvider;
import org.eclipse.ote.ui.eviewer.view.ViewerColumnElement;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.dialogs.ElementListSelectionDialog;

/**
 * @author Ken J. Aguilar
 */
public class RemoveColumnAction extends Action {

   private final ElementContentProvider elementContentProvider;

   public RemoveColumnAction(ElementContentProvider elementContentProvider) {
      super("Remove columns");
      this.elementContentProvider = elementContentProvider;
   }

   @Override
   public void run() {

      ElementListSelectionDialog dialog = new ElementListSelectionDialog(Display.getCurrent().getActiveShell(),new ElementMessageLabelProvider());
      dialog.setElements(elementContentProvider.getElementColumns().toArray());
      dialog.setTitle("Remove Columns");
      dialog.setMessage("Select one or more columns to remove");
      dialog.setEmptySelectionMessage("no columns selected");
      dialog.setIgnoreCase(true);
      dialog.setMultipleSelection(true);
      dialog.open();
      Object[] selection = dialog.getResult();
      if (selection != null) {
         HashSet<ViewerColumnElement> removed = new HashSet<ViewerColumnElement>();
         for (Object obj : selection) {
            removed.add((ViewerColumnElement)obj);
         }
         elementContentProvider.removeColumn(removed);
      }
   }


}