/*

 * 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:

 *

 * Trim Information

 *

 */

package com.nokia.traceviewer.eventhandler;

import org.eclipse.jface.action.IContributionManager;

import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Label;

import org.eclipse.ui.menus.WorkbenchWindowControlContribution;

/**

 * Trim Information

 */

public final class TrimInformation extends WorkbenchWindowControlContribution {

	/**

	 * Composite of the trim

	 */

	private static Composite composite;

	/**

	 * Text of the trim

	 */

	private static Label textLabel;

	/**

	 * Text inside the trim

	 */

	private static String textInTheTrim = ""; //$NON-NLS-1$

	/**

	 * Trim parent

	 */

	private static IContributionManager trimParent;

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.menus.AbstractTrimWidget#dispose()

	 */

	@Override

	public void dispose() {

		if (composite != null && !composite.isDisposed()) {

			composite.dispose();

		}

		if (textLabel != null && !textLabel.isDisposed()) {

			textLabel.dispose();

		}

		composite = null;

		textLabel = null;

	}

	/**

	 * Sets text to label

	 * 

	 * @param labelText

	 *            text to insert

	 */

	public static void setTextToLabel(String labelText) {

		textInTheTrim = labelText;

		// Only update the trim parent when there's something in our trim

		if (!textInTheTrim.equals("")) { //$NON-NLS-1$

			trimParent.update(true);

			// Empty, let's not resize the trim parent but only update the text

		} else {

			textLabel.setText(textInTheTrim);

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * org.eclipse.jface.action.ControlContribution#createControl(org.eclipse

	 * .swt.widgets.Composite)

	 */

	@Override

	protected Control createControl(Composite parent) {

		trimParent = getParent();

		// Create a composite to place the label in

		composite = new Composite(parent, SWT.NULL);

		// Give some room around the control

		GridLayout layout = new GridLayout();

		layout.marginHeight = 0;

		composite.setLayout(layout);

		// Create a label for the trim.

		textLabel = new Label(composite, SWT.NULL);

		textLabel

				.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, true));

		textLabel.setText(textInTheTrim);

		return composite;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.action.ContributionItem#isDynamic()

	 */

	@Override

	public boolean isDynamic() {

		return true;

	}

}