com.google.eclipse.protobuf.ui.util.IProjects.java Source code

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Here is the source code for com.google.eclipse.protobuf.ui.util.IProjects.java

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/*
 * Copyright (c) 2011 Google Inc.
 *
 * 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 com.google.eclipse.protobuf.ui.util;

import static com.google.eclipse.protobuf.ui.util.Workbenches.activeWorkbenchPage;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IViewReference;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.views.navigator.ResourceNavigator;

import com.google.inject.Singleton;

/**
 * Utility methods related to <code>{@link IProject}</code>s.
 *
 * @author alruiz@google.com (Alex Ruiz)
 */
@SuppressWarnings("deprecation")
@Singleton
public class IProjects {
    private static final IViewReference[] NO_VIEW_REFERENCES = new IViewReference[0];

    public IProject activeProject() {
        for (IViewReference reference : viewReferencesInActivePage()) {
            IViewPart part = reference.getView(false);
            if (part instanceof ResourceNavigator) {
                ResourceNavigator navigator = (ResourceNavigator) part;
                StructuredSelection selection = (StructuredSelection) navigator.getTreeViewer().getSelection();
                IResource resource = (IResource) selection.getFirstElement();
                return resource.getProject();
            }
        }
        return null;
    }

    private IViewReference[] viewReferencesInActivePage() {
        IWorkbenchPage page = activeWorkbenchPage();
        if (page == null) {
            return NO_VIEW_REFERENCES;
        }
        IViewReference[] references = page.getViewReferences();
        return (references == null) ? NO_VIEW_REFERENCES : references;
    }
}