com.codenvy.eclipse.ui.team.AbstractProjectHandler.java Source code

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Here is the source code for com.codenvy.eclipse.ui.team.AbstractProjectHandler.java

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/*******************************************************************************
 * Copyright (c) 2014 Codenvy, S.A.
 * 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
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package com.codenvy.eclipse.ui.team;

import static org.eclipse.ui.ide.ResourceUtil.getResource;

import java.util.HashSet;
import java.util.Set;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.handlers.HandlerUtil;

/**
 * Handler working with {@link IProject}.
 * 
 * @author Kevin Pollet
 */
public abstract class AbstractProjectHandler extends AbstractHandler {
    @Override
    public final Object execute(ExecutionEvent event) throws ExecutionException {
        final Set<IProject> projects = new HashSet<>();
        final ISelection selection = HandlerUtil.getCurrentSelection(event);

        if (!selection.isEmpty() && selection instanceof IStructuredSelection) {
            final IStructuredSelection structuredSelection = (IStructuredSelection) selection;

            for (Object oneObject : structuredSelection.toArray()) {
                final IResource oneResource = getResource(oneObject);
                if (oneResource != null) {
                    projects.add(oneResource.getProject());
                }
            }
        }

        // if resource are selected the active editor input is null
        final IEditorInput activeEditorInput = HandlerUtil.getActiveEditorInput(event);
        if (activeEditorInput != null) {
            final IResource editorResource = getResource(activeEditorInput);

            if (editorResource != null) {
                projects.add(editorResource.getProject());
            }
        }

        return execute(projects, event);
    }

    /**
     * Executes this handler on the selected projects.
     * 
     * @param projects the selected projects.
     * @param event the event containing all the information about the current state of the application; must not be null
     * @return the result of the execution. Reserved for future use, must be {@code null}.
     * @throws ExecutionException if an exception occurred during execution.
     */
    public abstract Object execute(Set<IProject> projects, ExecutionEvent event) throws ExecutionException;
}