// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

package com.symbian.smt.gui;

import org.eclipse.core.resources.IFile;

import org.eclipse.core.resources.IMarker;

import org.eclipse.core.resources.IResource;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.jface.dialogs.MessageDialog;

import org.eclipse.ui.IWorkbenchPage;

import org.eclipse.ui.IWorkbenchWindow;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.PlatformUI;

/**

 * @author barbararosi-schwartz

 * 

 */

public class FileValidationHelper {

	private static void createErrorMarker(IResource resource,

			String errorMessage) {

		IMarker marker;

		try {

			marker = resource.createMarker(IMarker.PROBLEM);

			if (marker.exists()) {

				marker.setAttribute(IMarker.MESSAGE, errorMessage);

				marker.setAttribute(IMarker.SEVERITY, IMarker.SEVERITY_ERROR);

				marker.setAttribute(IMarker.PRIORITY, IMarker.PRIORITY_HIGH);

			}

		} catch (CoreException e) {

			Logger.log("Cannot create error marker for resource ["

					+ resource.getName() + "].", e);

		}

	}

	private static void deleteErrorMarkers(IResource resource) {

		try {

			resource

					.deleteMarkers(IMarker.PROBLEM, false, IResource.DEPTH_ZERO);

		} catch (CoreException e) {

			Logger.log("Cannot delete error marker for resource ["

					+ resource.getName() + "].", e);

		}

	}

	private static void showProblemsView() {

		IWorkbenchWindow window = PlatformUI.getWorkbench()

				.getActiveWorkbenchWindow();

		if (window == null) {

			return;

		}

		IWorkbenchPage page = window.getActivePage();

		if (page == null) {

			return;

		}

		try {

			page.showView("org.eclipse.ui.views.ProblemView");

		} catch (PartInitException e) {

			String message = "Could not open the Problems View. Reason: "

					+ e.getMessage();

			String title = "Error";

			MessageDialog.openError(window.getShell(), title, message);

		}

	}

	private static void communicateCoreException(CoreException e) {

		Logger.log(e.getMessage(), e);

		IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();

		if (window == null) {

			return;

		}

		String message = "Problem encountered in locating errors in the workspace. Reason: "

				+ e.getMessage();

		String title = "Error";

		MessageDialog.openError(window.getShell(), title, message);

	}

	public static void validateResourceFile(IFile file) {

		ResourcesEnums resourceType = ManageResources.getResourceType(file);

		if (resourceType != null) {

			ResourceFileValidator validator = new ResourceFileValidator(

					resourceType);

			String errorMessage;

			try {

				String url = ManageResources.getResourceUrl(file);

				if (url == null) {

					errorMessage = validator.validateXml(file.getLocation()

							.toOSString());

				}

				else {

					errorMessage = validator.validateXml(url);

				}

				deleteErrorMarkers(file);

				if (errorMessage != null) {

					createErrorMarker(file, errorMessage);

					PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {

						public void run() {

							showProblemsView();

						}

					});

				}

			} catch (CoreException e) {

				communicateCoreException(e);

			}

		}

	}

	public static void validateSysDefFile(IFile file) {

		XmlFileValidator validator = new XmlFileValidator();

		String errorMessage;

		try {

			String url = ManageResources.getResourceUrl(file);

			if (url == null) {

				errorMessage = validator.validateXml(file.getLocation()

					.toOSString());

			}

			else {

				errorMessage = validator.validateXml(url);

			}

			deleteErrorMarkers(file);

			if (errorMessage != null) {

				createErrorMarker(file, errorMessage);

				PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell().getDisplay().asyncExec(new Runnable() {

					public void run() {

						showProblemsView();

					}

				});

			}

		} catch (CoreException e) {

			communicateCoreException(e);

		}

	}

}