org.eclipse.ui.internal.navigator.resources.workbench.ResourceExtensionLabelProvider.java Source code

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Here is the source code for org.eclipse.ui.internal.navigator.resources.workbench.ResourceExtensionLabelProvider.java

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/*******************************************************************************
 * Copyright (c) 2003, 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
 * Mickael Istria (Red Hat Inc.) Bug 264404 - Problem decorators
 *******************************************************************************/
package org.eclipse.ui.internal.navigator.resources.workbench;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.Adapters;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.DecorationOverlayIcon;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.model.WorkbenchLabelProvider;
import org.eclipse.ui.navigator.ICommonContentExtensionSite;
import org.eclipse.ui.navigator.ICommonLabelProvider;

/**
 * <p>
 * <strong>EXPERIMENTAL</strong>. This class or interface has been added as
 * part of a work in progress. There is a guarantee neither that this API will
 * work nor that it will remain the same. Please do not use this API without
 * consulting with the Platform/UI team.
 * </p>
 * @since 3.2
 */
public class ResourceExtensionLabelProvider extends WorkbenchLabelProvider implements ICommonLabelProvider {

    @Override
    public void init(ICommonContentExtensionSite aConfig) {
        //init
    }

    @Override
    public String getDescription(Object anElement) {

        if (anElement instanceof IResource) {
            return ((IResource) anElement).getFullPath().makeRelative().toString();
        }
        return null;
    }

    @Override
    protected ImageDescriptor decorateImage(ImageDescriptor input, Object element) {
        ImageDescriptor descriptor = super.decorateImage(input, element);
        if (descriptor == null) {
            return null;
        }
        IResource resource = Adapters.adapt(element, IResource.class);
        if (resource != null && (resource.getType() != IResource.PROJECT || ((IProject) resource).isOpen())) {
            ImageDescriptor overlay = null;
            switch (getHighestProblemSeverity(resource)) {
            case IMarker.SEVERITY_ERROR:
                overlay = PlatformUI.getWorkbench().getSharedImages()
                        .getImageDescriptor(ISharedImages.IMG_DEC_FIELD_ERROR);
                break;
            case IMarker.SEVERITY_WARNING:
                overlay = PlatformUI.getWorkbench().getSharedImages()
                        .getImageDescriptor(ISharedImages.IMG_DEC_FIELD_WARNING);
                break;
            }
            if (overlay != null) {
                descriptor = new DecorationOverlayIcon(descriptor, overlay, IDecoration.BOTTOM_LEFT);
            }
        }
        return descriptor;
    }

    private int getHighestProblemSeverity(IResource resource) {
        int problemSeverity = -1;
        try {
            for (IMarker marker : resource.findMarkers(IMarker.PROBLEM, true, IResource.DEPTH_INFINITE)) {
                problemSeverity = Math.max(problemSeverity, marker.getAttribute(IMarker.SEVERITY, -1));
            }
        } catch (CoreException e) {
            // Mute error to prevent pop-up in case of concurrent modification
            // of markers.
        }
        return problemSeverity;
    }

    @Override
    public void restoreState(IMemento aMemento) {

    }

    @Override
    public void saveState(IMemento aMemento) {
    }
}