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/*******************************************************************************
* Copyright (c) 2004, 2008 John Krasnay 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:
* John Krasnay - initial API and implementation
* Igor Jacy Lino Campista - Java 5 warnings fixed (bug 311325)
*******************************************************************************/
package org.eclipse.vex.ui.internal.handlers;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.vex.core.internal.dom.CopyOfElement;
import org.eclipse.vex.core.internal.dom.Element;
import org.eclipse.vex.ui.internal.swt.VexWidget;
/**
* Inserts a single table column before (left of) or after (right of) the current one.
*
* @see AddColumnLeftHandler
* @see AddColumnRightHandler
*/
public abstract class AbstractAddColumnHandler extends AbstractHandler {
public Object execute(final ExecutionEvent event) throws ExecutionException {
final VexWidget widget = VexHandlerUtil.computeWidget(event);
widget.doWork(new Runnable() {
public void run() {
try {
addColumn(widget);
} catch (final ExecutionException e) {
throw new RuntimeException(e);
}
}
});
return null;
}
private void addColumn(final VexWidget widget) throws ExecutionException {
final int indexToDup = VexHandlerUtil.getCurrentColumnIndex(widget);
// adding possible?
if (indexToDup == -1) {
return;
}
final List<Element> cellsToDup = new ArrayList<Element>();
VexHandlerUtil.iterateTableCells(widget, new TableCellCallbackAdapter() {
@Override
public void onCell(final Object row, final Object cell, final int rowIndex, final int cellIndex) {
if (cellIndex == indexToDup && cell instanceof Element) {
cellsToDup.add((Element) cell);
}
}
});
int finalOffset = -1;
for (final Element element : cellsToDup) {
if (finalOffset == -1) {
finalOffset = element.getStartOffset() + 1;
}
widget.moveTo(addBefore() ? element.getStartOffset() : element.getEndOffset() + 1);
widget.insertElement(element.getQualifiedName()).accept(new CopyOfElement(element));
}
if (finalOffset != -1) {
widget.moveTo(finalOffset);
}
}
/**
* @return {@code true} to add new column before (left of) current column or {@code false} to add new column after
* (right of) current column
*/
protected abstract boolean addBefore();
}
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