/**
* Copyright 2014 CITYTECH, Inc.
*
* 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.citytechinc.cq.clientlibs.core.tags;
import com.citytechinc.cq.clientlibs.core.servlets.ComponentClientLibraryServlet;
import com.day.cq.commons.jcr.JcrConstants;
import org.apache.commons.lang3.StringUtils;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.TagSupport;
import java.io.IOException;
public class PageLibraryTag extends TagSupport {
public static final String ATTR_SLING_REQUEST = "slingRequest";
private static final Logger LOG = LoggerFactory.getLogger(PageLibraryTag.class);
private String type;
private String brand;
@Override
public int doEndTag() throws JspTagException {
final SlingHttpServletRequest request = (SlingHttpServletRequest) pageContext.getAttribute(
ATTR_SLING_REQUEST);
try {
if (buildJs()) {
pageContext.getOut().write(buildJsIncludeString(request));
}
if (buildCss()) {
pageContext.getOut().write(buildCssIncludeString(request));
}
} catch (IOException e) {
LOG.error("error writing page library tag", e);
throw new JspTagException(e);
}
return EVAL_PAGE;
}
private String buildJsIncludeString(SlingHttpServletRequest request) {
StringBuilder jsOutputBuilder = new StringBuilder();
jsOutputBuilder.append("<script type=\"text/javascript\" src=\"");
jsOutputBuilder.append(getIncludeFilePath(request));
jsOutputBuilder.append(".");
jsOutputBuilder.append(ComponentClientLibraryServlet.SELECTOR);
if (StringUtils.isNotBlank(brand)) {
jsOutputBuilder.append(".");
jsOutputBuilder.append(brand);
}
jsOutputBuilder.append(".js\"></script>\n");
return jsOutputBuilder.toString();
}
private String buildCssIncludeString(SlingHttpServletRequest request) {
StringBuilder cssOutputBuilder = new StringBuilder();
cssOutputBuilder.append("<link ");
cssOutputBuilder.append("href=\"");
cssOutputBuilder.append(getIncludeFilePath(request));
cssOutputBuilder.append(".");
cssOutputBuilder.append(ComponentClientLibraryServlet.SELECTOR);
if (StringUtils.isNotBlank(brand)) {
cssOutputBuilder.append(".");
cssOutputBuilder.append(brand);
}
cssOutputBuilder.append(".css\" ");
cssOutputBuilder.append("rel=\"stylesheet\" ");
cssOutputBuilder.append("type=\"text/css\"");
cssOutputBuilder.append("/>\n");
return cssOutputBuilder.toString();
}
/**
* Get the path to the resource that has client libraries.
*
* @param request Request for the resource to get client libraries.
*
* @return path to the current resource that needs client libraries.
*/
private String getIncludeFilePath(SlingHttpServletRequest request) {
// path to return
final String path;
// figure out what path should be
final ResourceResolver resourceResolver = request.getResourceResolver();
final Resource resource = request.getResource();
if (resource.getName().equals(JcrConstants.JCR_CONTENT)) {
// on a jcr content node, return the parent node
path = resourceResolver.map(request, resource.getParent().getPath());
} else {
// on a non-jcr content node, just return the resource's path
path = resourceResolver.map(request, resource.getPath());
}
return path;
}
private Boolean buildJs() {
return type == null || "js".equals(type) || "both".equals(type);
}
private Boolean buildCss() {
return type == null || "css".equals(type) || "both".equals(type);
}
public String getType() {
return this.type;
}
public void setType(String type) {
this.type = type;
}
public String getBrand() {
return this.brand;
}
public void setBrand(String brand) {
this.brand = brand;
}
}