/*
* Copyright 2012 astamuse company,Ltd.
*
* 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.
*
*/
package com.astamuse.asta4d.render.transformer;
import java.util.concurrent.Future;
import org.jsoup.nodes.Element;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.astamuse.asta4d.Component;
import com.astamuse.asta4d.render.ElementRemover;
import com.astamuse.asta4d.render.ElementSetter;
import com.astamuse.asta4d.render.Renderer;
import com.astamuse.asta4d.render.SpecialRenderer;
import com.astamuse.asta4d.render.TextSetter;
public class TransformerFactory {
private final static boolean treatNullAsRemoveNode;
static {
String treat = System.getProperty("com.astamuse.asta4d.render.treatNullAsRemoveNode");
if (treat == null) {
treatNullAsRemoveNode = true;
} else {
treatNullAsRemoveNode = Boolean.parseBoolean(treat);
}
}
private final static Logger logger = LoggerFactory.getLogger(TransformerFactory.class);
public final static Transformer<?> generateTransformer(Object action) {
Transformer<?> transformer;
if (action == null && treatNullAsRemoveNode) {
transformer = new ElementRemover();
} else if (action instanceof Renderer) {// most of list rendering will return a
// list of Renderer, so put it at first
transformer = new RendererTransformer((Renderer) action);
} else if (action instanceof SpecialRenderer) {
transformer = SpecialRenderer.retrieveTransformer((SpecialRenderer) action);
} else if (action instanceof ElementSetter) {
transformer = new ElementSetterTransformer((ElementSetter) action);
} else if (action instanceof Future) {
transformer = new FutureTransformer((Future<?>) action);
} else if (action instanceof Element) {
transformer = new ElementTransformer((Element) action);
} else if (action instanceof Component) {
transformer = new ElementTransformer(((Component) action).toElement());
} else {
transformer = new ElementSetterTransformer(new TextSetter(action));
}
return transformer;
}
}