<extension

       point="org.eclipse.ui.handlers">

    <handler

          class="org.eclipse.mylyn.internal.wikitext.tasks.ui.commands.DeleteLineHandler"

          commandId="org.eclipse.ui.edit.text.delete.line">

         <activeWhen>

         	<with variable="activeContexts">

	            <iterate operator="or" ifEmpty="false">

	               <equals

	                     value="org.eclipse.mylyn.wikitext.tasks.ui.markupSourceContext"/>

	            </iterate>

         	</with>

		</activeWhen>

    </handler>

 </extension>

/*******************************************************************************

 * Copyright (c) 2007, 2010 David Green 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:

 *     David Green - initial API and implementation

 *******************************************************************************/

package org.eclipse.mylyn.internal.wikitext.tasks.ui.commands;

import org.eclipse.core.commands.ExecutionEvent;

import org.eclipse.core.commands.ExecutionException;

import org.eclipse.core.commands.IHandler;

import org.eclipse.jface.text.BadLocationException;

import org.eclipse.jface.text.ITextSelection;

import org.eclipse.jface.text.source.ISourceViewer;

import org.eclipse.ui.texteditor.TextViewerDeleteLineTarget;

/**

 * Abstract command handler that uses {@link TextViewerDeleteLineTarget}. Subclasses can specify the type of delete line

 * and copyToClipboard.

 * 

 * @author David Green

 */

public class AbstractDeleteLineHandler extends AbstractMarkupSourceViewerHandler implements IHandler {

	protected final int type;

	protected final boolean copyToClipboard;

	protected AbstractDeleteLineHandler(int type, boolean copyToClipboard) {

		this.type = type;

		this.copyToClipboard = copyToClipboard;

	}

	public Object execute(ExecutionEvent event) throws ExecutionException {

		ISourceViewer viewer = getSourceViewer(event);

		if (viewer != null) {

			TextViewerDeleteLineTarget target = new TextViewerDeleteLineTarget(viewer);

			try {

				target.deleteLine(viewer.getDocument(), (ITextSelection) viewer.getSelectionProvider().getSelection(),

						type, copyToClipboard);

			} catch (BadLocationException e) {

				throw new ExecutionException(e.getMessage(), e);

			}

		}

		return null;

	}

}

/*******************************************************************************

 * Copyright (c) 2007, 2010 David Green 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:

 *     David Green - initial API and implementation

 *******************************************************************************/

package org.eclipse.mylyn.internal.wikitext.tasks.ui.commands;

import org.eclipse.core.commands.AbstractHandler;

import org.eclipse.core.commands.ExecutionEvent;

import org.eclipse.core.commands.ExecutionException;

import org.eclipse.jface.text.source.ISourceViewer;

import org.eclipse.swt.custom.StyledText;

import org.eclipse.ui.handlers.HandlerUtil;

/**

 * Abstract command handler that can get the current source viewer

 * 

 * @author David Green

 */

public abstract class AbstractMarkupSourceViewerHandler extends AbstractHandler {

	protected ISourceViewer getSourceViewer(ExecutionEvent event) throws ExecutionException {

		Object activeFocusControl = HandlerUtil.getVariable(event, "activeFocusControl"); //$NON-NLS-1$

		if (activeFocusControl instanceof StyledText) {

			StyledText textWidget = (StyledText) activeFocusControl;

			ISourceViewer viewer = (ISourceViewer) textWidget.getData(ISourceViewer.class.getName());

			return viewer;

		}

		return null;

	}

}

/*******************************************************************************

 * Copyright (c) 2007, 2010 David Green 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:

 *     David Green - initial API and implementation

 *******************************************************************************/

package org.eclipse.mylyn.internal.wikitext.tasks.ui.commands;

import org.eclipse.ui.texteditor.DeleteLineAction;

/**

 * Command handler for delete line command (whole)

 * 

 * @author David Green

 */

public class DeleteLineHandler extends AbstractDeleteLineHandler {

	public DeleteLineHandler() {

		super(DeleteLineAction.WHOLE, false);

	}

}