/*

 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * which accompanies this distribution, and is available

 * 

 * Initial Contributors:

 * Nokia Corporation - Initial contribution

 * 

 * Contributors:

 * 

 * Description: This file is part of com.nokia.tools.variant.confml.core component.

 */

package com.nokia.tools.variant.confml.internal.core.project;

import java.util.Map;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.resources.IResource;

import org.eclipse.core.resources.IResourceDelta;

import org.eclipse.core.resources.IResourceDeltaVisitor;

import org.eclipse.core.resources.IResourceVisitor;

import org.eclipse.core.resources.IncrementalProjectBuilder;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.IProgressMonitor;

import com.nokia.tools.variant.confml.core.ConfMLCore;

public class GenericBuilder extends IncrementalProjectBuilder {

	class SimpleDeltaVisitor implements IResourceDeltaVisitor {

		IProgressMonitor monitor;

		public SimpleDeltaVisitor(IProgressMonitor monitor) {

			this.monitor = monitor;

		}

		/*

		 * @see IResourceDeltaVisitor#visit(IResourceDelta)

		 */

		public boolean visit(IResourceDelta delta) throws CoreException {

			IResource resource = delta.getResource();

			if (this.monitor != null) {

				this.monitor.subTask("Building" + resource.getProjectRelativePath());

			}

			switch (delta.getKind()) {

			case IResourceDelta.ADDED:

				// handle added resource

				buildResource(resource);

				break;

			case IResourceDelta.REMOVED:

				// handle removed resource

				break;

			case IResourceDelta.CHANGED:

				// handle changed resource

				buildResource(resource);

				break;

			}

			// return true to continue visiting children.

			return true;

		}

	}

	class SimpleResourceVisitor implements IResourceVisitor {

		IProgressMonitor monitor;

		public SimpleResourceVisitor(IProgressMonitor monitor) {

			this.monitor = monitor;

		}

		/*

		 * @see IResourceVisitor#visit(IResource)

		 */

		public boolean visit(IResource resource) {

			if (monitor != null) {

				monitor.subTask("Building "+resource.getProjectRelativePath());

			}

			try {

				buildResource(resource);

			} catch (CoreException e) {

				ConfMLCore.getDefault().getLog().log(e.getStatus());

				return false;

			}

			// return true to continue visiting children.

			return true;

		}

	}

	/*

	 * @see org.eclipse.core.internal.events.InternalBuilder#build(int, Map,

	 * IProgressMonitor)

	 */

	@SuppressWarnings("unchecked")

	protected IProject[] build(int kind, Map args, IProgressMonitor monitor)

			throws CoreException {

		if (kind == FULL_BUILD) {

			fullBuild(monitor);

		} else {

			IResourceDelta delta = getDelta(getProject());

			if (delta == null) {

				fullBuild(monitor);

			} else {

				incrementalBuild(delta, monitor);

			}

		}

		return null;

	}

	protected void buildResource(IResource resource) throws CoreException {

		deleteMarkers(resource);

	}

	protected void deleteMarkers(IResource resource) throws CoreException{

	}

	protected void fullBuild(final IProgressMonitor monitor)

			throws CoreException {

		monitor.beginTask("Full Build", 100);

		getProject().accept(new SimpleResourceVisitor(monitor));

		monitor.done();

	}

	protected void incrementalBuild(IResourceDelta delta,

			IProgressMonitor monitor) throws CoreException {

		monitor.beginTask("Incremental Build", 100);

		delta.accept(new SimpleDeltaVisitor(monitor));

		monitor.done();

	}

}