org.gw4e.eclipse.handlers.SynchronizeBuildPoliciesHandler.java Source code

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Here is the source code for org.gw4e.eclipse.handlers.SynchronizeBuildPoliciesHandler.java

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package org.gw4e.eclipse.handlers;

/*-
 * #%L
 * gw4e
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2017 gw4e-project
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * #L%
 */

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
import org.gw4e.eclipse.facade.GraphWalkerContextManager;
import org.gw4e.eclipse.facade.ResourceManager;

/**
 * A Command handler to call GW4E Synchronization between java file and
 * build policies when selection fits
 * 
 * @see org.eclipse.core.commands.IHandler
 * @see org.eclipse.core.commands.AbstractHandler
 */
public class SynchronizeBuildPoliciesHandler extends AbstractHandler {
    /**
     * The constructor.
     */
    public SynchronizeBuildPoliciesHandler() {
    }

    public Object execute(ExecutionEvent event) throws ExecutionException {
        boolean autoBuilding = ResourcesPlugin.getWorkspace().getDescription().isAutoBuilding();
        IWorkbenchWindow aww = HandlerUtil.getActiveWorkbenchWindow(event);
        ISelection sel = HandlerUtil.getCurrentSelection(event);
        if (sel.isEmpty())
            return null;
        if (sel instanceof IStructuredSelection) {

            IStructuredSelection selection = (IStructuredSelection) sel;
            if (selection != null) {
                Object obj = selection.getFirstElement();
                if (obj != null) {
                    try {
                        IResource selectedResource = null;
                        if (obj instanceof IJavaProject) {
                            IJavaProject jp = (IJavaProject) obj;
                            selectedResource = jp.getProject();
                        }
                        if (obj instanceof IPackageFragmentRoot) {
                            IPackageFragmentRoot pfr = (IPackageFragmentRoot) obj;
                            selectedResource = pfr.getCorrespondingResource();
                        }
                        if (obj instanceof IPackageFragment) {
                            IPackageFragment pf = (IPackageFragment) obj;
                            selectedResource = pf.getCorrespondingResource();
                        }
                        if (selectedResource != null && !selectedResource.exists())
                            return null;
                        // This is where the synchronization is done ...
                        ResourceManager.setAutoBuilding(false);
                        GraphWalkerContextManager.synchronizeBuildPolicies(selectedResource, aww);
                    } catch (Exception e) {
                        ResourceManager.logException(e);
                    } finally {
                        ResourceManager.setAutoBuilding(autoBuilding);
                    }
                }
            }
        }
        return null;
    }

}