/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.felix.sigil.eclipse.job;

import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;

import org.apache.felix.sigil.common.model.ICapabilityModelElement;
import org.apache.felix.sigil.common.model.IModelElement;
import org.apache.felix.sigil.common.model.IModelWalker;
import org.apache.felix.sigil.common.model.IRequirementModelElement;
import org.apache.felix.sigil.common.model.eclipse.ISigilBundle;
import org.apache.felix.sigil.eclipse.SigilCore;
import org.apache.felix.sigil.eclipse.model.project.ISigilProjectModel;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.WorkspaceJob;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;

public class ResolveProjectsJob extends WorkspaceJob
{
    private final Collection<ISigilProjectModel> sigilProjects;
    private final LinkedList<ICapabilityModelElement> capabilities;

    public ResolveProjectsJob(IWorkspace workspace)
    {
        super("Resolving Sigil projects");
        setRule(workspace.getRoot());
        sigilProjects = SigilCore.getRoot().getProjects();
        capabilities = null;
    }

    public ResolveProjectsJob(IWorkspace workspace, LinkedList<ICapabilityModelElement> capabilities)
    {
        super("Resolving Sigil projects");
        this.capabilities = capabilities;
        setRule(workspace.getRoot());
        sigilProjects = SigilCore.getRoot().getProjects();
    }

    public ResolveProjectsJob(ISigilProjectModel project)
    {
        super("Resolving Sigil project");
        setRule(project.getProject().getWorkspace().getRoot());
        sigilProjects = Collections.singleton(project);
        capabilities = null;
    }

    @Override
    public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException
    {
        MultiStatus status = new MultiStatus(SigilCore.PLUGIN_ID, 0,
            "Error resolving Sigil projects", null);

        boolean flush = sigilProjects.size() > 0;

        for (ISigilProjectModel sigilProject : sigilProjects)
        {
            try
            {
                if (isDependent(sigilProject))
                {
                    if (flush)
                        sigilProject.flushDependencyState();
                    sigilProject.rebuildDependencies(monitor);
                }
            }
            catch (CoreException e)
            {
                status.add(e.getStatus());
            }
        }

        return status;
    }

    private boolean isDependent(ISigilProjectModel sigilProject)
    {
        if (capabilities == null)
        {
            return true;
        }
        else
        {
            ISigilBundle b = sigilProject.getBundle();
            if (b == null)
            {
                // sigil project deleted can't be a dependent
                return false;
            }
            else
            {
                final boolean[] dep = new boolean[1];

                b.visit(new IModelWalker()
                {
                    public boolean visit(IModelElement element)
                    {
                        if (element instanceof IRequirementModelElement)
                        {
                            IRequirementModelElement r = (IRequirementModelElement) element;

                            for (ICapabilityModelElement c : capabilities)
                            {
                                if (r.accepts(c))
                                {
                                    dep[0] = true;
                                    break;
                                }
                            }
                        }
                        // found a dependency stop walking
                        return !dep[0];
                    }
                });

                return dep[0];
            }
        }
    }
}

@@ -3475,32 +3475,121 @@
 lProject)%0A    %7B%0A
+        // fix for FELIX-2574%0A        if (!sigilProject.exists()) return false;%0A        %0A
         if (capa

fix for FELIX-2574 - check if project exists before further work