com.ebmwebsourcing.petals.common.internal.commands.ConfigureBuildPathCommandHandler.java Source code

Introduction

Here is the source code for com.ebmwebsourcing.petals.common.internal.commands.ConfigureBuildPathCommandHandler.java

Source

/******************************************************************************
 * Copyright (c) 2011-2013, Linagora
 *
 * 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:
 *       Linagora - initial API and implementation
 *******************************************************************************/

package com.ebmwebsourcing.petals.common.internal.commands;

import java.util.Collections;

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.runtime.IStatus;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.internal.ui.preferences.BuildPathsPropertyPage;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.PreferencesUtil;

import com.ebmwebsourcing.petals.common.internal.PetalsCommonPlugin;

/**
 * @author Mickal Istria - EBM WebSourcing
 */
public class ConfigureBuildPathCommandHandler extends AbstractHandler {

    /*
     * (non-Jsdoc)
     * @see org.eclipse.core.commands.AbstractHandler
     * #execute(org.eclipse.core.commands.ExecutionEvent)
     */
    public Object execute(ExecutionEvent event) throws ExecutionException {

        try {
            IStructuredSelection selection = (IStructuredSelection) PlatformUI.getWorkbench()
                    .getActiveWorkbenchWindow().getSelectionService().getSelection();
            if (!selection.isEmpty()) {
                IJavaProject project = (IJavaProject) ((IProject) selection.getFirstElement())
                        .getNature(JavaCore.NATURE_ID);

                // Copy-pasted from ConfigureBuildPathAction
                PreferencesUtil
                        .createPropertyDialogOn(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(),
                                project, BuildPathsPropertyPage.PROP_ID, null, Collections.EMPTY_MAP)
                        .open();
            }

        } catch (Exception ex) {
            throw new ExecutionException("Could not cast to Java Project", ex);
        }

        return null;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.core.commands.AbstractHandler
     * #setEnabled(java.lang.Object)
     */
    @Override
    public void setEnabled(Object evaluationContext) {

        boolean enabled = false;
        try {
            if (PlatformUI.getWorkbench() != null && PlatformUI.getWorkbench().getActiveWorkbenchWindow() != null
                    && PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService() != null
                    && PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService()
                            .getSelection() instanceof IStructuredSelection) {

                IStructuredSelection selection = (IStructuredSelection) PlatformUI.getWorkbench()
                        .getActiveWorkbenchWindow().getSelectionService().getSelection();
                enabled = selection.size() == 1 && selection.getFirstElement() instanceof IProject
                        && ((IProject) selection.getFirstElement()).isAccessible()
                        && ((IProject) selection.getFirstElement()).hasNature(JavaCore.NATURE_ID);
            }

        } catch (Exception ex) {
            PetalsCommonPlugin.log(ex, IStatus.ERROR);
        }

        super.setBaseEnabled(enabled);
    }
}