org.eclipse.ui.intro/src/org/eclipse/ui/internal/intro/impl/model/viewer/IntroModelLabelProvider.java

/*******************************************************************************
 * Copyright (c) 2004, 2016 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.ui.internal.intro.impl.model.viewer;

import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.internal.intro.impl.model.AbstractIntroElement;
import org.eclipse.ui.internal.intro.impl.model.AbstractIntroIdElement;
import org.eclipse.ui.internal.intro.impl.model.AbstractIntroPage;
import org.eclipse.ui.internal.intro.impl.model.IntroAnchor;
import org.eclipse.ui.internal.intro.impl.model.IntroContentProvider;
import org.eclipse.ui.internal.intro.impl.model.IntroExtensionContent;
import org.eclipse.ui.internal.intro.impl.model.IntroGroup;
import org.eclipse.ui.internal.intro.impl.model.IntroHTML;
import org.eclipse.ui.internal.intro.impl.model.IntroImage;
import org.eclipse.ui.internal.intro.impl.model.IntroInclude;
import org.eclipse.ui.internal.intro.impl.model.IntroLink;
import org.eclipse.ui.internal.intro.impl.model.IntroModelRoot;
import org.eclipse.ui.internal.intro.impl.model.IntroPageTitle;
import org.eclipse.ui.internal.intro.impl.model.IntroPartPresentation;
import org.eclipse.ui.internal.intro.impl.model.IntroSeparator;
import org.eclipse.ui.internal.intro.impl.model.IntroText;
import org.eclipse.ui.internal.intro.impl.util.ImageUtil;

public class IntroModelLabelProvider extends LabelProvider {

    // Images created in this ILabelProvider

    static {
        ImageUtil.registerImage(ImageUtil.INTRO_MODEL_CONTAINER,
            "container_obj.gif"); //$NON-NLS-1$
        ImageUtil.registerImage(ImageUtil.INTRO_MODEL_LEAF, "topic.gif"); //$NON-NLS-1$
    }

    public IntroModelLabelProvider() {
        super();
    }

    @Override
	public Image getImage(Object element) {
        Image image = null;
        AbstractIntroElement introElement = null;
        if (element instanceof AbstractIntroElement)
            // synch the resource first.
            introElement = (AbstractIntroElement) element;
        if (introElement == null)
            return null;

        int elementType = introElement.getType();
        switch (elementType) {
        case AbstractIntroElement.GROUP:
        case AbstractIntroElement.PAGE:
        case AbstractIntroElement.HOME_PAGE:
            image = ImageUtil.getImage(ImageUtil.INTRO_MODEL_CONTAINER);
            break;
        default:
            image = ImageUtil.getImage(ImageUtil.INTRO_MODEL_LEAF);
            break;
        }
        return image;
    }

    @Override
	public String getText(Object element) {

        String label = null;
        AbstractIntroElement introElement = null;
        if (element instanceof AbstractIntroElement)
            // synch the resource first.
            introElement = (AbstractIntroElement) element;
        if (introElement == null)
            return null;

        int elementType = introElement.getType();
        switch (elementType) {
        case AbstractIntroElement.GROUP:
            label = "GROUP: " + ((IntroGroup) introElement).getId(); //$NON-NLS-1$
            break;
        case AbstractIntroElement.LINK:
            label = "LINK: " + ((IntroLink) introElement).getLabel(); //$NON-NLS-1$
            break;
        case AbstractIntroElement.TEXT:
            label = "TEXT: " + ((IntroText) introElement).getText(); //$NON-NLS-1$
            break;
        case AbstractIntroElement.IMAGE:
            label = "IMAGE: " + ((IntroImage) introElement).getId(); //$NON-NLS-1$
            break;
        case AbstractIntroElement.HR:
            label = "HR: " + ((IntroSeparator) introElement).getId(); //$NON-NLS-1$
            break;
        case AbstractIntroElement.HTML:
            label = "HTML: " + ((IntroHTML) introElement).getId(); //$NON-NLS-1$
            break;
        case AbstractIntroElement.INCLUDE:
            label = "Unresolved INCLUDE: " //$NON-NLS-1$
                    + ((IntroInclude) introElement).getPath();
            break;
        case AbstractIntroElement.PAGE:
            label = "PAGE: " + ((AbstractIntroPage) introElement).getId(); //$NON-NLS-1$
            break;
        case AbstractIntroElement.HOME_PAGE:
            label = "HOME PAGE: " //$NON-NLS-1$
                    + ((AbstractIntroPage) introElement).getId();
            break;
        case AbstractIntroElement.PRESENTATION:
            label = "PRESENTATION: " //$NON-NLS-1$
                    + ((IntroPartPresentation) introElement)
                        .getImplementationKind();
            break;
        case AbstractIntroElement.CONTENT_PROVIDER:
            label = "CONTENT PROVIDER: " //$NON-NLS-1$
                    + ((IntroContentProvider) introElement).getClassName();
            break;
        case AbstractIntroElement.CONTAINER_EXTENSION:
            label = "Unresolved ConfigExtension: " //$NON-NLS-1$
                    + ((IntroExtensionContent) introElement).getPath();
            break;
        case AbstractIntroElement.ANCHOR:
            label = "ANCHOR: " //$NON-NLS-1$
                    + getPath(introElement.getParent(), ((IntroAnchor) introElement).getId());
            break;
        case AbstractIntroElement.PAGE_TITLE:
            label = "Title: " //$NON-NLS-1$
                    + ((IntroPageTitle) introElement).getTitle();
            break;
        default:
            label = super.getText(element);
            break;
        }
        return label;
    }

	private String getPath(AbstractIntroElement introElement, String suffix) {
		if (introElement == null || introElement instanceof IntroModelRoot) {
			return suffix;
		}
		String newSuffix = suffix;
		if (introElement instanceof AbstractIntroIdElement) {
			newSuffix = ((AbstractIntroIdElement)introElement).getId() + '/' + suffix;
		}
		return getPath(introElement.getParent(), newSuffix);

	}

}