/*

 * 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:

 *

 * TreeItem Label Provider

 *

 */

package com.nokia.traceviewer.dialog.treeitem;

import java.net.URL;

import org.eclipse.jface.resource.ImageDescriptor;

import org.eclipse.jface.viewers.ILabelProvider;

import org.eclipse.jface.viewers.ILabelProviderListener;

import org.eclipse.swt.graphics.Image;

import com.nokia.traceviewer.TraceViewerPlugin;

/**

 * TreeItem Label Provider

 * 

 */

public class TreeItemLabelProvider implements ILabelProvider {

	/**

	 * Group image

	 */

	private final Image groupImage;

	/**

	 * Tree item image

	 */

	private final Image treeItemImage;

	/**

	 * Tree Component item image

	 */

	private final Image treeComponentItemImage;

	/**

	 * Stop trigger tree item image

	 */

	private final Image stopTriggerItemImage;

	/**

	 * Activation trigger tree item image

	 */

	private final Image activationTriggerItemImage;

	/**

	 * Constructor

	 */

	public TreeItemLabelProvider() {

		// Create group icon

		URL url = TraceViewerPlugin.getDefault().getBundle().getEntry(

				"/icons/folder.gif"); //$NON-NLS-1$

		groupImage = ImageDescriptor.createFromURL(url).createImage();

		// Create tree item icon

		url = TraceViewerPlugin.getDefault().getBundle().getEntry(

				"/icons/listitem.gif"); //$NON-NLS-1$

		treeItemImage = ImageDescriptor.createFromURL(url).createImage();

		// Create tree Component item icon

		url = TraceViewerPlugin.getDefault().getBundle().getEntry(

				"/icons/listcomponentitem.gif"); //$NON-NLS-1$

		treeComponentItemImage = ImageDescriptor.createFromURL(url)

				.createImage();

		// Create stop trigger item icon

		url = TraceViewerPlugin.getDefault().getBundle().getEntry(

				"/icons/stoptrigger.gif"); //$NON-NLS-1$

		stopTriggerItemImage = ImageDescriptor.createFromURL(url).createImage();

		// Create activation trigger item icon

		url = TraceViewerPlugin.getDefault().getBundle().getEntry(

				"/icons/activationtrigger.gif"); //$NON-NLS-1$

		activationTriggerItemImage = ImageDescriptor.createFromURL(url)

				.createImage();

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.viewers.ILabelProvider#getImage(java.lang.Object)

	 */

	public Image getImage(Object element) {

		Image image;

		if (((TreeItem) element).isGroup()) {

			image = groupImage;

		} else {

			// Stop trigger image

			if (element instanceof TriggerTreeItem

					&& ((TriggerTreeItem) element).getType() == TriggerTreeItem.Type.STOPTRIGGER) {

				image = stopTriggerItemImage;

				// Activation trigger image

			} else if (element instanceof TriggerTreeItem

					&& ((TriggerTreeItem) element).getType() == TriggerTreeItem.Type.ACTIVATIONTRIGGER) {

				image = activationTriggerItemImage;

				// Component rule tree images

			} else if (componentRuleSelected(element)) {

				image = treeComponentItemImage;

				// Text rule tree images

			} else {

				image = treeItemImage;

			}

		}

		return image;

	}

	/**

	 * Checks if the element is component rule

	 * 

	 * @param element

	 *            the element to check

	 * @return true if the element is component rule

	 */

	private boolean componentRuleSelected(Object element) {

		boolean isComponent = false;

		if (element instanceof ColorTreeComponentItem

				|| element instanceof FilterTreeComponentItem

				|| element instanceof LineCountTreeComponentItem) {

			isComponent = true;

		}

		return isComponent;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)

	 */

	public String getText(Object element) {

		String text = ((TreeItem) element).getName();

		return text;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * org.eclipse.jface.viewers.IBaseLabelProvider#addListener(org.eclipse.

	 * jface.viewers.ILabelProviderListener)

	 */

	public void addListener(ILabelProviderListener listener) {

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose()

	 */

	public void dispose() {

		// Dispose images

		if (groupImage != null) {

			groupImage.dispose();

		}

		if (treeItemImage != null) {

			treeItemImage.dispose();

		}

		if (stopTriggerItemImage != null) {

			stopTriggerItemImage.dispose();

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(java.lang

	 * .Object, java.lang.String)

	 */

	public boolean isLabelProperty(Object element, String property) {

		return false;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(org.eclipse

	 * .jface.viewers.ILabelProviderListener)

	 */

	public void removeListener(ILabelProviderListener listener) {

	}

}