eu.geclipse.ui.internal.actions.CopyAction.java Source code

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Here is the source code for eu.geclipse.ui.internal.actions.CopyAction.java

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/*****************************************************************************
 * Copyright (c) 2006, 2007 g-Eclipse Consortium 
 * 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
 *
 * Initial development of the original code was made for the
 * g-Eclipse project founded by European Union
 * project number: FP6-IST-034327  http://www.geclipse.eu/
 *
 * Contributors:
 *    Mathias Stuempert - initial API and implementation
 *****************************************************************************/

package eu.geclipse.ui.internal.actions;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.views.navigator.LocalSelectionTransfer;

import eu.geclipse.core.model.IGridElement;

/**
 * Copy action for the copy/paste machanism.
 */
public class CopyAction extends TransferAction {

    /**
     * Create a new copy action using the specified clipboard.
     * 
     * @param clipboard The {@link Clipboard} used by this copy
     * action.
     */
    protected CopyAction(final Clipboard clipboard) {
        super(Messages.getString("CopyAction.copy_action_text"), clipboard); //$NON-NLS-1$
        ISharedImages sharedImages = PlatformUI.getWorkbench().getSharedImages();
        ImageDescriptor pasteImage = sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_COPY);
        setImageDescriptor(pasteImage);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.action.Action#run()
     */
    @Override
    public void run() {
        IStructuredSelection selection = getStructuredSelection();
        LocalSelectionTransfer transfer = LocalSelectionTransfer.getInstance();
        transfer.setSelection(selection);
        Object[] data = new Object[] { selection };
        Transfer[] dataTypes = new Transfer[] { transfer };
        Clipboard clipboard = getClipboard();
        clipboard.setContents(data, dataTypes);
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.actions.BaseSelectionListenerAction#updateSelection(org.eclipse.jface.viewers.IStructuredSelection)
     */
    @Override
    protected boolean updateSelection(final IStructuredSelection selection) {

        boolean enabled = super.updateSelection(selection);

        if (enabled) {

            for (Object o : selection.toList()) {
                if (o instanceof IGridElement) {
                    enabled = !((IGridElement) o).isVirtual();
                } else {
                    enabled = false;
                }
            }

        }

        return enabled;

    }

    /**
     * Get the location in the workspace of the specified object. Works for {@link IResource}
     * and {@link IGridElement}.
     * 
     * @param obj The object for which to retrieve the location. 
     * @return The location in the workspace for the specified object or <code>null</code>
     * if the specified object is neither an {@link IResource} nor an {@link IGridElement}.
     */
    /*private IPath getLocation( final Object obj ) {
      IPath location = null;
      if ( obj instanceof IResource ) {
        location = ( ( IResource ) obj ).getFullPath();
      } else if ( obj instanceof IGridElement ) {
        location = ( ( IGridElement ) obj ).getPath(); 
      }
      return location;
    }*/

}