/*******************************************************************************
 * Copyright (c) 2001, 2011 IBM Corporation and others.
 * 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
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Angelo Zerr <angelo.zerr@gmail.com> - copied from org.eclipse.wst.xml.ui.internal.validation.DelegatingSourceValidatorForXML
 *                                           modified in order to process JSON Objects.                    
 *******************************************************************************/
package org.eclipse.wst.json.ui.internal.validation;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.wst.validation.ValidationFramework;
import org.eclipse.wst.validation.Validator;
import org.eclipse.wst.validation.internal.provisional.core.IValidator;

/**
 * This performs as you type validation for JSON files
 */
public class DelegatingSourceValidatorForJSON extends DelegatingSourceValidator {
	private final static String Id = "org.eclipse.wst.json.core.json"; //$NON-NLS-1$

	private Validator validator;

	public DelegatingSourceValidatorForJSON() {
	}

	private Validator getValidator() {
		if (validator == null) {
			validator = ValidationFramework.getDefault().getValidator(Id);
		}
		return validator;
	}

	protected IValidator getDelegateValidator() {
		Validator v = getValidator();
		if (v == null)
			return null;
		return v.asIValidator();
	}

	protected boolean isDelegateValidatorEnabled(IFile file) {
		Validator v = getValidator();
		if (v == null)
			return false;
		if (!file.isSynchronized(IResource.DEPTH_ZERO))
			return false;
		if (!v.shouldValidate(file, false, false))
			return false;
		return v.isBuildValidation() || v.isManualValidation();
	}
}