/*

 * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:

 *

 * Copy selection command

 *

 */

package com.nokia.traceviewer.action;

import org.eclipse.jface.resource.ImageDescriptor;

import org.eclipse.swt.custom.StyledText;

import org.eclipse.ui.ISharedImages;

import org.eclipse.ui.PlatformUI;

import com.nokia.traceviewer.TraceViewerHelpContextIDs;

import com.nokia.traceviewer.engine.TraceViewerGlobals;

import com.nokia.traceviewer.view.listener.SelectionProperties;

/**

 * Copy selection command

 * 

 */

final class CopySelectionAction extends TraceViewerAction {

	/**

	 * Data Fetcher class

	 */

	private CopySelectionDataFetcher dataFetcher;

	/**

	 * Image for this action

	 */

	private static ImageDescriptor image;

	/**

	 * Constructor

	 */

	CopySelectionAction() {

		image = PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(

				ISharedImages.IMG_TOOL_COPY);

		setText(Messages.getString("CopySelectionAction.Title")); //$NON-NLS-1$

		setToolTipText(Messages.getString("CopySelectionAction.Tooltip")); //$NON-NLS-1$

		setImageDescriptor(image);

		// Set help

		PlatformUI.getWorkbench().getHelpSystem().setHelp(this,

				TraceViewerHelpContextIDs.ACTIONS);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.traceviewer.action.TraceViewerAction#doRun()

	 */

	@Override

	protected void doRun() {

		int showingFrom = TraceViewerGlobals.getTraceViewer().getView()

				.getShowingTracesFrom();

		StyledText widget = TraceViewerGlobals.getTraceViewer().getView()

				.getViewer().getTextWidget();

		// If the whole selection is in current view, just use widget copy. Also

		// if selected lines are below two blocks, widget copy can be used in

		// any case

		int first = SelectionProperties.firstClickedLine;

		int last = SelectionProperties.lastClickedLine;

		int lineInEnd = showingFrom + widget.getLineCount();

		// If First click and Last click are between current view, use Text

		// Widget Copy

		if (first > showingFrom && first < lineInEnd && last > showingFrom

				&& last < lineInEnd) {

			widget.copy();

			// If we are in the very first block of traces and the first click

			// is in the first row OR the last click hasn't been done at all,

			// use Text Widget Copy

		} else if ((showingFrom == 0 && first == 0 && last < lineInEnd)

				|| (last == -1)) {

			widget.copy();

			// Otherwise, go get the data from the file

		} else {

			if (dataFetcher == null) {

				dataFetcher = new CopySelectionDataFetcher();

			}

			dataFetcher.startGatheringData();

		}

	}

}