/*******************************************************************************
 * ============LICENSE_START====================================================
 * * org.onap.aaf
 * * ===========================================================================
 * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * * ===========================================================================
 * * Licensed under the Apache License, Version 2.0 (the "License");
 * * you may not use this file except in compliance with the License.
 * * You may obtain a copy of the License at
 * * 
 *  *      http://www.apache.org/licenses/LICENSE-2.0
 * * 
 *  * Unless required by applicable law or agreed to in writing, software
 * * distributed under the License is distributed on an "AS IS" BASIS,
 * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * * See the License for the specific language governing permissions and
 * * limitations under the License.
 * * ============LICENSE_END====================================================
 * *
 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 * *
 ******************************************************************************/
package org.onap.aaf.xgen;

import java.io.IOException;

import org.onap.aaf.inno.env.APIException;
import org.onap.aaf.inno.env.Env;
import org.onap.aaf.inno.env.Trans;
import org.onap.aaf.inno.env.util.StringBuilderWriter;
import org.onap.aaf.xgen.html.State;

public class XGenBuff<G extends XGen<G>> {
	private G xgen;
	private StringBuilder sb;
	// private String forward, backward;
	
	public XGenBuff(int flags, CacheGen<G> cg) {
		sb = new StringBuilder();
		xgen = cg.create(flags, new StringBuilderWriter(sb));
	}

	/**
	 * Normal case of building up Cached HTML without transaction info
	 * 
	 * @param cache
	 * @param code
	 * @throws APIException
	 * @throws IOException
	 */
	public void run(Cache<G> cache, Code<G> code) throws APIException, IOException {
		code.code(cache, xgen);
	}

	/**
	 * Special Case where code is dynamic, so give access to State and Trans info
	 *  
	 * @param state
	 * @param trans
	 * @param cache
	 * @param code
	 * @throws APIException
	 * @throws IOException
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public void run(State<Env> state, Trans trans, Cache cache, DynamicCode code) throws APIException, IOException {
			code.code(state, trans, cache, xgen);
	}
	
	public int getIndent() {
		return xgen.getIndent();
	}

	public void setIndent(int indent) {
		xgen.setIndent(indent);
	}

	public Section<G> newSection() {
		Section<G> s = new Section<G>();
		s.indent = xgen.getIndent();
		s.forward = sb.toString();
		sb.setLength(0);
		s.backward = sb.toString();
		sb.setLength(0);
		return s;
	}
}