com.google.cloud.tools.eclipse.ui.util.ProjectFromSelectionHelper.java Source code

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Here is the source code for com.google.cloud.tools.eclipse.ui.util.ProjectFromSelectionHelper.java

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/*
 * Copyright 2016 Google Inc.
 *
 * Licensed 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 com.google.cloud.tools.eclipse.ui.util;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.wst.common.project.facet.core.IFacetedProject;

import com.google.cloud.tools.eclipse.appengine.facets.AppEngineStandardFacet;
import com.google.cloud.tools.eclipse.util.AdapterUtil;
import com.google.cloud.tools.eclipse.util.FacetedProjectHelper;

public class ProjectFromSelectionHelper {

    private FacetedProjectHelper facetedProjectHelper;

    public ProjectFromSelectionHelper(FacetedProjectHelper facetedProjectHelper) {
        this.facetedProjectHelper = facetedProjectHelper;
    }

    public IProject getProject(ExecutionEvent event) throws CoreException, ExecutionException {
        ISelection selection = HandlerUtil.getCurrentSelectionChecked(event);
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection structuredSelection = (IStructuredSelection) selection;
            if (structuredSelection.size() == 1) {
                IProject project = AdapterUtil.adapt(structuredSelection.getFirstElement(), IProject.class);
                if (project == null) {
                    return null;
                }

                IFacetedProject facetedProject = facetedProjectHelper.getFacetedProject(project);
                if (AppEngineStandardFacet.hasAppEngineFacet(facetedProject)) {
                    return project;
                }
            }
        }
        return null;
    }
}