org.sonarlint.eclipse.ui.internal.SonarLintProjectDecorator.java Source code

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Here is the source code for org.sonarlint.eclipse.ui.internal.SonarLintProjectDecorator.java

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/*
 * SonarLint for Eclipse
 * Copyright (C) 2015-2016 SonarSource SA
 * sonarlint@sonarsource.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonarlint.eclipse.ui.internal;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.ListenerList;
import org.eclipse.jface.viewers.IDecoration;
import org.eclipse.jface.viewers.ILabelProviderListener;
import org.eclipse.jface.viewers.ILightweightLabelDecorator;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.sonarlint.eclipse.core.internal.resources.SonarLintProject;
import org.sonarlint.eclipse.core.internal.server.ServersManager;

public class SonarLintProjectDecorator implements ILightweightLabelDecorator {

    public static final String ID = "org.sonarlint.eclipse.ui.sonarlintDecorator";

    private ListenerList fListeners;

    @Override
    public void decorate(Object element, IDecoration decoration) {
        IProject project = null;
        if (element instanceof IProject) {
            project = (IProject) element;
        } else if (element instanceof IAdaptable) {
            project = (IProject) ((IAdaptable) element).getAdapter(IProject.class);
        }
        if (project != null && project.isAccessible()) {
            SonarLintProject p = SonarLintProject.getInstance(project);
            if (!p.isAutoEnabled()) {
                return;
            }
            if (p.getServerId() != null && ServersManager.getInstance().getServer(p.getServerId()) != null) {
                decoration.addOverlay(SonarLintImages.SQ_LABEL_DECORATOR);
            }
        }
    }

    @Override
    public void addListener(ILabelProviderListener listener) {

        if (fListeners == null) {
            fListeners = new ListenerList();
        }

        fListeners.add(listener);
    }

    @Override
    public void dispose() {
        if (fListeners != null) {
            Object[] listeners = fListeners.getListeners();
            for (int i = 0; i < listeners.length; i++) {
                fListeners.remove(listeners[i]);
            }
            fListeners = null;
        }
    }

    @Override
    public boolean isLabelProperty(Object element, String property) {
        return false;
    }

    @Override
    public void removeListener(ILabelProviderListener listener) {
        if (fListeners == null) {
            return;
        }

        fListeners.remove(listener);
    }

    public void fireChange(IProject[] elements) {
        if (fListeners != null && !fListeners.isEmpty()) {
            LabelProviderChangedEvent event = new LabelProviderChangedEvent(this, elements);
            Object[] listeners = fListeners.getListeners();
            for (int i = 0; i < listeners.length; i++) {
                ((ILabelProviderListener) listeners[i]).labelProviderChanged(event);
            }
        }
    }

}