/*
* Copyright 2011, 2012 France Télécom
*
* 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.orange.wro.taglib.tag;
import com.orange.wro.taglib.config.WroConfig;
import org.apache.commons.lang3.StringUtils;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.tagext.SimpleTagSupport;
import java.io.IOException;
public class OptionalScriptTag extends SimpleTagSupport {
@Override
public void doTag() throws JspException {
StringBuilder output = new StringBuilder();
try {
writeTag(output);
getJspContext().getOut().append(output);
} catch (Exception e) {
throw new JspException(e);
}
}
/*package*/ final void writeTag(StringBuilder output) throws IOException {
if (isLessNeeded()) {
writeScript(output);
}
}
/*package*/ void writeScript(StringBuilder builder) throws IOException {
String lessPath = getLessPath();
if (!StringUtils.isEmpty(lessPath)) {
String fullPath = getContextPath() + lessPath;
String script = String.format(WroTagLibConstants.JS_MARKUP, fullPath);
String out = String.format(WroTagLibConstants.LESS_DEBUG_MARKUP, script);
builder.append(out);
}
}
private String getLessPath() {
WroConfig wroConfig = WroConfig.getInstance();
return wroConfig.getWroTagLibConfig().getLessPath();
}
private String getContextPath() {
PageContext context = (PageContext) getJspContext();
return ((HttpServletRequest) context.getRequest()).getContextPath();
}
private boolean isLessNeeded() {
PageContext pageContext = (PageContext) getJspContext();
Object lessObj = pageContext.getAttribute(WroTagLibConstants.LESS_INJECTED);
return (lessObj == null) ? false : (Boolean)lessObj;
}
}