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/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. and others.
*
* 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:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.jsf.ui.commands.jsfhtml;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jst.pagedesigner.commands.DesignerCommand;
import org.eclipse.jst.pagedesigner.jsf.core.dom.JSFDOMUtil;
import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* Delete a column from dataTable.
*
* @author mengbo
* @version 1.5
*/
public class DataTableDeleteColumnCommand extends DesignerCommand
{
private Element _dataTable;
private int _index;
/**
* @param viewer
* @param dataTable
* @param columnIndex
*/
public DataTableDeleteColumnCommand(IHTMLGraphicalViewer viewer, Element dataTable, int columnIndex)
{
super(CommandResources.getString("DataTableDeleteColumnCommand.Label.DeleteColumn"), viewer); //$NON-NLS-1$
this._dataTable = dataTable;
this._index = columnIndex;
}
/* (non-Javadoc)
* @see org.eclipse.gef.commands.Command#canExecute()
*/
public boolean canExecute()
{
if (this._index < 0)
{
return false;
}
return super.canExecute();
}
/* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.commands.DesignerCommand#doExecute()
*/
/* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.commands.DesignerCommand#doExecute()
*/
protected void doExecute()
{
NodeList children = _dataTable.getChildNodes();
int index = 0;
for (int i = 0, size = children.getLength(); i < size; i++)
{
Node node = children.item(i);
if (JSFDOMUtil.isHColumn(node))
{
if (index++ == this._index)
{
_dataTable.removeChild(node);
return;
}
}
}
}
/* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.commands.DesignerCommand#getAfterCommandDesignerSelection()
*/
protected ISelection getAfterCommandDesignerSelection()
{
return toDesignSelection(_dataTable);
}
}
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