org.camunda.bpm.engine.impl.form.engine.HtmlDocumentBuilder Maven / Gradle / Ivy
/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.
*/
package org.camunda.bpm.engine.impl.form.engine;
import java.io.StringWriter;
import java.util.ArrayDeque;
import java.util.Deque;
/**
* The {@link HtmlDocumentBuilder} is part of the {@link HtmlFormEngine}
* and maintains a stack of element which are written out to a {@link StringWriter}.
*
* Actual writing of the html elements is delegated to the {@link HtmlElementWriter}.
*
* @author Daniel Meyer
*
*/
public class HtmlDocumentBuilder {
protected HtmlWriteContext context = new HtmlWriteContext();
protected Deque elements = new ArrayDeque<>();
protected StringWriter writer = new StringWriter();
public HtmlDocumentBuilder(HtmlElementWriter documentElement) {
startElement(documentElement);
}
public HtmlDocumentBuilder startElement(HtmlElementWriter renderer) {
renderer.writeStartTag(context);
elements.push(renderer);
return this;
}
public HtmlDocumentBuilder endElement() {
HtmlElementWriter renderer = elements.pop();
renderer.writeContent(context);
renderer.writeEndTag(context);
return this;
}
public String getHtmlString() {
return writer.toString();
}
public class HtmlWriteContext {
public StringWriter getWriter() {
return writer;
}
public int getElementStackSize() {
return elements.size();
}
}
}