de.fkoeberle.autocommit.SelectionSearchUtil.java Source code

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

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/*
 * 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.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;

public class SelectionSearchUtil {

    public static LinkedHashSet<IProject> searchProjectsIn(ISelection selection) {
        LinkedHashSet<IProject> projects = new LinkedHashSet<IProject>();
        if (!(selection instanceof IStructuredSelection)) {
            return projects;
        }
        IStructuredSelection structuredSelection = (IStructuredSelection) selection;
        Iterator<?> iterator = structuredSelection.iterator();
        while (iterator.hasNext()) {
            Object o = iterator.next();
            IProject project = null;
            if (o instanceof IProject) {
                project = (IProject) o;
            } else if (o instanceof IAdaptable) {
                IAdaptable adaptable = (IAdaptable) o;
                project = (IProject) adaptable.getAdapter(IProject.class);
            }
            if (project != null) {
                projects.add(project);
            }
        }
        return projects;
    }

    /**
     * 
     * @param selection
     *            the projects to check.
     * @param enabledState
     *            if true only projects in the specified selection will be
     *            return which contain the nature {@link Nature}.
     * 
     * @return never null.
     */
    public static Set<IProject> searchAutoCommitableProjectsWithEnabledStateIn(ISelection selection,
            boolean enabledState) {
        Set<IProject> projects = new HashSet<IProject>();
        for (IProject project : searchProjectsIn(selection)) {
            try {
                if (project.isOpen() && project.hasNature(Nature.ID) == enabledState) {
                    IRepository repository = AutoCommitPluginActivator.getDefault().getRepositoryFor(project);
                    if (repository != null) {
                        projects.add(project);
                    }
                }
            } catch (CoreException e) {
                AutoCommitPluginActivator.logError("Failed determine enabled state of context menu item", e);
                /*
                 * Allow the user to use the context menu so that he can get a
                 * proper error message or a good result anyway.
                 */
                projects.add(project);
            }
        }
        return projects;
    }
}