com.google.gdt.eclipse.designer.launch.AbstractGwtLaunchConfigurationDelegate.java Source code

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Here is the source code for com.google.gdt.eclipse.designer.launch.AbstractGwtLaunchConfigurationDelegate.java

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/*******************************************************************************
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * 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
 *
 * 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.gdt.eclipse.designer.launch;

import com.google.gdt.eclipse.designer.common.Constants;
import com.google.gdt.eclipse.designer.util.Utils;

import org.eclipse.wb.internal.core.utils.Version;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.model.LaunchConfigurationDelegate;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
import org.eclipse.jdt.launching.JavaLaunchDelegate;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang.StringUtils;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * Abstract {@link LaunchConfigurationDelegate} for GWT.
 * 
 * @author scheglov_ke
 * @coverage gwt.launch
 */
public abstract class AbstractGwtLaunchConfigurationDelegate extends JavaLaunchDelegate {
    ////////////////////////////////////////////////////////////////////////////
    //
    // Utils
    //
    ////////////////////////////////////////////////////////////////////////////
    protected final Version getVersion(ILaunchConfiguration configuration) throws CoreException {
        IJavaProject javaProject = getJavaProject(configuration);
        return Utils.getVersion(javaProject);
    }

    protected String addSharedArguments(String flags, ILaunchConfiguration configuration) throws CoreException {
        flags = addIfPresent(flags, configuration, Constants.LAUNCH_ATTR_LOG_LEVEL, "-logLevel");
        flags = addIfPresent(flags, configuration, Constants.LAUNCH_ATTR_DIR_GEN, "-gen");
        flags = addIfPresent(flags, configuration, Constants.LAUNCH_ATTR_DIR_WAR, "-war");
        return flags;
    }

    protected static String addIfPresent(String flags, ILaunchConfiguration configuration, String key, String flag)
            throws CoreException {
        String value = configuration.getAttribute(key, "").trim();
        if (!StringUtils.isEmpty(value)) {
            flags += " " + flag + " " + value;
        }
        return flags;
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Class path
    //
    ////////////////////////////////////////////////////////////////////////////
    @Override
    public String[] getClasspath(ILaunchConfiguration configuration) throws CoreException {
        return getClasspathAll(configuration);
    }

    public String[] getClasspathAll(ILaunchConfiguration configuration) throws CoreException {
        List<String> entries = new ArrayList<String>();
        // add source folders
        IProject project;
        {
            String projectName = configuration.getAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME,
                    "");
            project = Utils.getProject(projectName);
            addSourceFolders(new HashSet<IProject>(), entries, project);
        }
        // add usual project classpath entries
        // we add them after source folders because GWT Shell compiles sources itself
        {
            String[] originalEntries = super.getClasspath(configuration);
            CollectionUtils.addAll(entries, originalEntries);
        }
        // add GWT DEV jar
        entries.add(Utils.getDevLibPath(project).toPortableString());
        //
        return entries.toArray(new String[entries.size()]);
    }

    /**
     * GWT requires source folders in classpath (because it has its own compiler), so we should add
     * all source folders for given project and its required projects.
     */
    public static void addSourceFolders(Set<IProject> visitedProjects, List<String> entries, IProject project)
            throws CoreException {
        // HACK: see above
        if (project.getName().endsWith("-design")) {
            return;
        }
        // check for recursion
        if (visitedProjects.contains(project)) {
            return;
        }
        visitedProjects.add(project);
        //
        IJavaProject javaProject = JavaCore.create(project);
        // add source folders for given project
        {
            IPackageFragmentRoot[] packageFragmentRoots = javaProject.getPackageFragmentRoots();
            for (int i = 0; i < packageFragmentRoots.length; i++) {
                IPackageFragmentRoot packageFragmentRoot = packageFragmentRoots[i];
                if (packageFragmentRoot.getKind() == IPackageFragmentRoot.K_SOURCE) {
                    entries.add(packageFragmentRoot.getResource().getLocation().toPortableString());
                }
            }
        }
        // process required projects
        {
            IProject[] referencedProjects = project.getReferencedProjects();
            for (int i = 0; i < referencedProjects.length; i++) {
                IProject referencedProject = referencedProjects[i];
                addSourceFolders(visitedProjects, entries, referencedProject);
            }
        }
    }
}