/*
* Copyright 2013 eXo Platform SAS
*
* 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 juzu.impl.tags;
import juzu.impl.template.spi.TemplateException;
import juzu.impl.template.spi.TemplateStub;
import juzu.impl.template.spi.juzu.ast.ASTNode;
import juzu.impl.template.spi.juzu.compiler.ExtendedTagHandler;
import juzu.impl.template.spi.juzu.compiler.ProcessPhase;
import juzu.impl.template.spi.TemplateModel;
import juzu.impl.plugin.template.metamodel.TemplateMetaModel;
import juzu.impl.common.Path;
import juzu.template.Renderable;
import juzu.template.TemplateRenderContext;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Map;
/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
public class DecorateTag extends ExtendedTagHandler {
public DecorateTag() {
super("decorate");
}
@Override
public void process(ProcessPhase phase, ASTNode.Tag tag, TemplateModel t) {
// Find the root template tag
ASTNode current = tag;
while (true) {
if (current instanceof ASTNode.Block) {
current = ((ASTNode.Block)current).getParent();
}
else {
break;
}
}
ASTNode.Template template = (ASTNode.Template)current;
// Move the children of the template node as child of the decorate tag
for (ASTNode.Block child : new ArrayList<ASTNode.Block<?>>(template.getChildren())) {
if (child != tag) {
tag.addChild(child);
}
}
// Set decorate tag as unique child of the template node
if (tag.getParent() != template) {
template.addChild(tag);
}
}
@Override
public void compile(ProcessPhase phase, ASTNode.Tag tag, TemplateModel t) throws TemplateException {
String path = tag.getArgs().get("path");
Path.Absolute resolved = phase.resolveTemplate(Path.parse(path));
if (resolved == null) {
throw TemplateMetaModel.TEMPLATE_NOT_RESOLVED.failure(path);
} else {
tag.getArgs().put("path", resolved.getCanonical());
}
}
@Override
public void render(TemplateRenderContext context, Renderable body, Map<String, String> args) throws IOException {
InsertTag.current.get().addLast(body);
try {
String path = args.get("path");
TemplateStub template = context.resolveTemplate(path);
template.render(context);
}
finally {
InsertTag.current.get().removeLast();
}
}
}