de.fkoeberle.autocommit.AutocommitIconDecorator.java Source code

Introduction

Here is the source code for de.fkoeberle.autocommit.AutocommitIconDecorator.java

Source

/*
 * Copyright (C) 2012, Florian Kberle <florian@fkoeberle.de>
 *
 * 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
 */
package de.fkoeberle.autocommit;

import java.net.URL;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.DecorationOverlayIcon;
import org.eclipse.jface.viewers.ILabelDecorator;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.swt.graphics.Image;

public class AutocommitIconDecorator extends LabelProvider implements ILabelDecorator {

    private final IAutoCommitEnabledStateListener listener;
    private final ImageDescriptor icon;

    public AutocommitIconDecorator() {
        listener = new IAutoCommitEnabledStateListener() {

            @Override
            public void handleEnabledStateChanged(IProject project) {
                fireLabelProviderChanged(new LabelProviderChangedEvent(AutocommitIconDecorator.this, project));
            }
        };
        AutoCommitPluginActivator.getDefault().addAutoCommitEnabledStateListener(listener);
        URL iconURL = getClass().getResource("/icon8x8.png");
        this.icon = ImageDescriptor.createFromURL(iconURL);
    }

    @Override
    public Image decorateImage(Image image, Object element) {
        IProject project = (IProject) Platform.getAdapterManager().getAdapter(element, IProject.class);
        if (project == null || !project.isOpen()) {
            return null;
        }
        try {
            if (!project.hasNature(Nature.ID)) {
                return null;
            }
        } catch (CoreException e) {
            AutoCommitPluginActivator.logUnexpectedException(e);
            return null;
        }
        DecorationOverlayIcon newImageDescriptor = new DecorationOverlayIcon(image,
                new ImageDescriptor[] { icon, null, null, null, null });

        return newImageDescriptor.createImage();
    }

    @Override
    public String decorateText(String text, Object element) {
        return null;
    }

    @Override
    public void dispose() {
        try {
            AutoCommitPluginActivator.getDefault().removeAutoCommitEnabledStateListener(listener);
        } finally {
            super.dispose();
        }
    }

}