org.ebayopensource.vjet.eclipse.ui.actions.nature.java.JavaProjectAddVjoNaturePolicy.java Source code

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Here is the source code for org.ebayopensource.vjet.eclipse.ui.actions.nature.java.JavaProjectAddVjoNaturePolicy.java

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/*******************************************************************************
 * Copyright (c) 2005-2011 eBay Inc.
 * 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
 *
 *******************************************************************************/
/**
 * 
 */
package org.ebayopensource.vjet.eclipse.ui.actions.nature.java;

import java.io.ByteArrayInputStream;
import java.util.ArrayList;
import java.util.List;

import org.ebayopensource.vjet.eclipse.core.PiggyBackClassPathUtil;
import org.ebayopensource.vjet.eclipse.core.sdk.VjetSdkRuntime;
import org.ebayopensource.vjet.eclipse.ui.actions.nature.DefaultAddVjoNaturePolicy;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.dltk.mod.core.DLTKCore;
import org.eclipse.dltk.mod.core.IBuildpathEntry;
import org.eclipse.dltk.mod.internal.core.ScriptProject;
import org.eclipse.dltk.mod.launching.ScriptRuntime;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;

/**
 * later, this class will be extract to a new plug-in project
 * 
 * 
 *
 */
public class JavaProjectAddVjoNaturePolicy extends DefaultAddVjoNaturePolicy {

    /* (non-Javadoc)
     * @see org.ebayopensource.vjet.eclipse.ui.actions.nature.DefaultAddVjoNaturePolicy#accept(org.eclipse.core.resources.IProject)
     */
    public boolean accept(IProject project) {
        try {
            String[] natures = project.getDescription().getNatureIds();
            for (int i = 0; i < natures.length; i++) {
                if (JavaCore.NATURE_ID.equals(natures[i]))
                    return true;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }

    /* (non-Javadoc)
     * @see org.ebayopensource.vjet.eclipse.ui.actions.nature.DefaultAddVjoNaturePolicy#buildBuildPathFile(org.eclipse.core.resources.IProject)
     */
    protected void buildBuildPathFile(IProject project) {
        try {
            if (project.getFile(".buildpath").exists())
                project.getFile(".buildpath").delete(false, null);

            IJavaProject javaProject = JavaCore.create(project);
            IBuildpathEntry[] entries = this.buildBuildpathEntry(javaProject);

            //temporary script project for encode build path
            ScriptProject scriptProject = new ScriptProject(project, null);
            String buildPathContent = scriptProject.encodeBuildpath(entries, true, null);

            IFile buildPathFile = project.getFile(ScriptProject.BUILDPATH_FILENAME);
            buildPathFile.create(new ByteArrayInputStream(buildPathContent.getBytes()), false, null);
            PiggyBackClassPathUtil.setProjectInitialized(project);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * get the dltk build path entries based on java project 
     * 
     * @param javaProject
     * @return
     */
    private IBuildpathEntry[] buildBuildpathEntry(IJavaProject javaProject) {
        try {
            List<IBuildpathEntry> buildpathEntryList = new ArrayList<IBuildpathEntry>();

            //create source dltk build path entries
            IClasspathEntry[] classPathEntries = javaProject.getRawClasspath();
            for (int i = 0; i < classPathEntries.length; i++) {
                if (IClasspathEntry.CPE_SOURCE == classPathEntries[i].getEntryKind()) {
                    IBuildpathEntry buildpathEntry = DLTKCore.newSourceEntry(classPathEntries[i].getPath());
                    buildpathEntryList.add(buildpathEntry);
                }
            }

            //create default interpreter build path entry
            IBuildpathEntry defaultInterpreterEntry = ScriptRuntime.getDefaultInterpreterContainerEntry();
            buildpathEntryList.add(defaultInterpreterEntry);
            //create default SDK build path entry
            IBuildpathEntry defaultSdkEntry = VjetSdkRuntime.getDefaultSdkContainerEntry();
            buildpathEntryList.add(defaultSdkEntry);
            //create build path entry for vjet jar
            buildpathEntryList.addAll(PiggyBackClassPathUtil.fetchBuildEntryFromJavaProject(javaProject));
            return buildpathEntryList.toArray(new IBuildpathEntry[buildpathEntryList.size()]);
        } catch (Exception e) {
            e.printStackTrace();
            return new IBuildpathEntry[0];
        }
    }

}