/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.shindig.gadgets.templates.tags;
import org.apache.shindig.gadgets.GadgetException;
import org.apache.shindig.gadgets.parse.GadgetHtmlParser;
import org.apache.shindig.gadgets.parse.HtmlSerialization;
import org.apache.shindig.gadgets.templates.TemplateProcessor;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import java.io.IOException;
import com.google.inject.Inject;
/**
* A TagHandler for the <os:Html code="..."/> tag.
* The value of the @code attribute will be treated as HTML markup.
*/
public class HtmlTagHandler extends AbstractTagHandler {
static final String TAG_NAME = "Html";
static final String ATTR_CODE = "code";
private final GadgetHtmlParser parser;
@Inject
public HtmlTagHandler(GadgetHtmlParser parser) {
super(TagHandler.OPENSOCIAL_NAMESPACE, TAG_NAME);
this.parser = parser;
}
public void process(Node result, Element tag, TemplateProcessor processor) {
String code = getValueFromTag(tag, ATTR_CODE, processor, String.class);
if ((code == null) || "".equals(code)) {
return;
}
try {
parser.parseFragment(code, result);
} catch (GadgetException ge) {
try {
StringBuilder sb = new StringBuilder("Error: ");
HtmlSerialization.printEscapedText(ge.getMessage(), sb);
Node comment = result.getOwnerDocument().createComment(sb.toString());
result.appendChild(comment);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
}