/* Copyright (C) 2004 - 2008  Versant Inc.  http://www.db4o.com

This file is part of the sharpen open source java to c# translator.

sharpen is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

sharpen is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */

package sharpen.core;

import java.util.*;

import sharpen.core.framework.resources.*;

import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.*;
import org.eclipse.jdt.core.*;

public class JavaModelUtility {

	public static void collectCompilationUnits(List<ICompilationUnit> result, IPackageFragmentRoot root) throws JavaModelException {
		IJavaElement[] elements = root.getChildren();
		for (int j = 0; j < elements.length; ++j) {
			IPackageFragment p = (IPackageFragment)elements[j];
			result.addAll(Arrays.asList(p.getCompilationUnits()));
		}
	}
	
	public static List<ICompilationUnit> collectCompilationUnits(IJavaProject project) throws JavaModelException {
		
		List<ICompilationUnit> result = new ArrayList<ICompilationUnit>();
		
		IPackageFragmentRoot[] roots = project.getAllPackageFragmentRoots();
		for (int i = 0; i < roots.length; ++i) {
			IPackageFragmentRoot root = roots[i];
			if (IPackageFragmentRoot.K_SOURCE == root.getKind()) {
				collectCompilationUnits(result, root);
			}
		}
		
		return result;
	}
	
	public static IProject getTargetProject(IJavaProject project, IProgressMonitor monitor) throws CoreException {
		SimpleProject targetProject = new SimpleProject(getTargetProjectName(project), monitor);
		return targetProject.getProject();
	}
	
	public static String getTargetProjectName(IJavaProject project) {
		return project.getElementName() + SharpenConstants.SHARPENED_PROJECT_SUFFIX;
	}

	public static List<ICompilationUnit> collectCompilationUnits(IPackageFragmentRoot root) throws JavaModelException {
		List<ICompilationUnit> result = new ArrayList<ICompilationUnit>();
		collectCompilationUnits(result, root);
		return result;
	}

	public static IProject deleteTargetProject(IJavaProject javaProject) throws CoreException {
		IProject target = getTargetProject(javaProject, null);
		if (target.exists()) {
			target.close(null);
			target.delete(true, true, null);
		}
		return target;
	}

	public static IWorkspaceRoot workspaceRoot() {
		return ResourcesPlugin.getWorkspace().getRoot();
	}
}