org.eclipse.xtend.shared.ui.MetamodelContainer.java Source code

Introduction

Here is the source code for org.eclipse.xtend.shared.ui.MetamodelContainer.java

Source

/*******************************************************************************
 * Copyright (c) 2005, 2007 committers of openArchitectureWare 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:
 *     committers of openArchitectureWare - initial API and implementation
 *******************************************************************************/

package org.eclipse.xtend.shared.ui;

import java.util.Iterator;
import java.util.List;
import java.util.Set;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jdt.core.ElementChangedEvent;
import org.eclipse.jdt.core.IElementChangedListener;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.xtend.shared.ui.internal.XtendLog;
import org.eclipse.xtend.typesystem.MetaModel;

public class MetamodelContainer implements IElementChangedListener, IResourceChangeListener {

    List<IJavaProject> projects;

    boolean changed = false;

    private final Set<MetaModel> metaModels;

    Set<IResource> resources;

    public MetamodelContainer(final List<IJavaProject> project, final Set<IResource> resource,
            final Set<MetaModel> metamodels) {
        projects = project;
        metaModels = metamodels;
        resources = resource;
    }

    public void elementChanged(final ElementChangedEvent event) {
        for (final Iterator<IJavaProject> iter = projects.iterator(); !changed && iter.hasNext();) {
            final IJavaProject project = iter.next();
            if (project.isOnClasspath(event.getDelta().getElement())) {
                changed = true;
            }
        }
    }

    public boolean hasChanged() {
        return changed;
    }

    public Set<MetaModel> getMetaModels() {
        return metaModels;
    }

    public void resourceChanged(final IResourceChangeEvent event) {
        if (changed)
            return;
        // we are only interested in POST_CHANGE events
        if (event.getType() != IResourceChangeEvent.POST_CHANGE)
            return;
        final IResourceDelta rootDelta = event.getDelta();
        try {
            rootDelta.accept(new IResourceDeltaVisitor() {

                public boolean visit(final IResourceDelta delta) throws CoreException {
                    if (!changed && delta.getResource() != null) {
                        if (resources.contains(delta.getResource())) {
                            changed = true;
                        }
                        if (delta.getResource() instanceof IProject) {
                            for (final Iterator<IJavaProject> iter = projects.iterator(); !changed
                                    && iter.hasNext();) {
                                final IJavaProject project = iter.next();
                                if (project.getProject().equals(delta.getResource())) {
                                    changed = true;
                                }
                            }
                        }
                    }
                    return true;
                }
            });
        } catch (final CoreException e) {
            XtendLog.logError(e);
        }
    }

}