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/*
* Copyright 2004-2013 ICEsoft Technologies Canada Corp.
*
* 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.icesoft.faces.component.style;
import com.icesoft.faces.context.DOMContext;
import com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer;
import com.icesoft.faces.renderkit.dom_html_basic.HTML;
import com.icesoft.faces.util.CoreUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.icefaces.util.EnvUtils;
import org.w3c.dom.Element;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.beans.Beans;
import java.io.File;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.faces.application.Resource;
/**
* Created by IntelliJ IDEA. User: rmayhew Date: May 30, 2006 Time: 3:59:37 PM
* To change this template use File | Settings | File Templates.
*/
public class OutputStyleRenderer extends DomBasicRenderer {
private static Log log = LogFactory.getLog(OutputStyleRenderer.class);
private static final String IE_EXTENTION = "_ie";
private static final String IE_7_EXTENTION = "_ie7";
private static final String IE_8_EXTENSION = "_ie8";
private static final String SAFARI_EXTENTION = "_safari";
private static final String SAFARI_MOBILE_EXTENTION = "_safarimobile";
private static final String CSS_EXTENTION = ".css";
private static final String DT_EXTENTION = "_dt";
private static final String OPERA_EXTENTION = "_opera";
private static final String OPERA_MOBILE_EXTENTION = "_operamobile";
private static final int DEFAULT_TYPE = 0;
private static final int IE = 1;
private static final int SAFARI = 2;
private static final int DT = 3;
private static final int IE_7 = 4;
private static final int SAFARI_MOBILE = 5;
private static final int OPERA = 6;
private static final int OPERA_MOBILE = 7;
private static final int IE_8 = 8;
String[] extensions = {"", IE_EXTENTION, SAFARI_EXTENTION, DT_EXTENTION, IE_7_EXTENTION, SAFARI_MOBILE_EXTENTION, OPERA_EXTENTION, OPERA_MOBILE_EXTENTION, IE_8_EXTENSION};
private String browserSpecificFilename;
public void encodeEnd(FacesContext facesContext, UIComponent uiComponent)
throws IOException {
validateParameters(facesContext, uiComponent, OutputStyle.class);
try {
DOMContext domContext =
DOMContext.attachDOMContext(facesContext, uiComponent);
if (!domContext.isInitialized()) {
OutputStyle outputStyle = (OutputStyle) uiComponent;
Element styleEle = buildCssElement(domContext);
String href = outputStyle.getHref();
styleEle.setAttribute(HTML.HREF_ATTR, getResourceURL(facesContext,href));
domContext.setRootNode(styleEle);
int browserType = browserType(facesContext, uiComponent);
if (browserType != DEFAULT_TYPE) {
if (href.endsWith(CSS_EXTENTION)) {
int i = href.indexOf(CSS_EXTENTION);
if (i > 0) {
String start = href.substring(0, i);
Element ieStyleEle = buildCssElement(domContext);
String extention = IE_EXTENTION;
if (browserType == SAFARI) {
extention = SAFARI_EXTENTION;
}
if (browserType == DT) {
extention = DT_EXTENTION;
}
if(browserType == IE_7){
extention = IE_7_EXTENTION;
}
if(browserType == IE_8){
extention = IE_8_EXTENSION;
}
if(browserType == SAFARI_MOBILE){
extention = SAFARI_MOBILE_EXTENTION;
}
if(browserType == OPERA){
extention = OPERA_EXTENTION;
}
if(browserType == OPERA_MOBILE){
extention = OPERA_MOBILE_EXTENTION;
}
if (useSpecific(facesContext, start, extention)) {
// W3C spec: To make a style sheet preferred, set the rel attribute to "stylesheet" and name the style sheet with the title attribute
ieStyleEle.setAttribute(HTML.TITLE_ATTR, extention);
String hrefURL = CoreUtils.resolveResourceURL(facesContext, browserSpecificFilename);
ieStyleEle.setAttribute(HTML.HREF_ATTR, hrefURL);
styleEle.getParentNode().appendChild(ieStyleEle);
}
} else {
throw new RuntimeException(
"OutputStyle file attribute is too short. " +
"Needs at least one character before .css. Current Value is [" +
href + "]");
}
} else {
Matcher matcher = Pattern.compile(".*javax\\.faces\\.resource/((.*)\\.css)(\\..*)?\\?ln=([^&]*)(&.*|$)").matcher(href);
if (matcher.matches()) {
Element ieStyleEle = buildCssElement(domContext);
String extension = browserType >= 0 && browserType < extensions.length ? extensions[browserType] : IE_EXTENTION;
ieStyleEle.setAttribute(HTML.TITLE_ATTR, extension);
String hrefURL = new StringBuffer(matcher.group(0)).insert(matcher.end(2), extension).toString();
ieStyleEle.setAttribute(HTML.HREF_ATTR, hrefURL);
String resourceName = new StringBuffer(matcher.group(1)).insert(matcher.end(2) - matcher.start(2), extension).toString();
Resource resource = facesContext.getApplication().getResourceHandler().createResource(resourceName, matcher.group(4));
if (resource != null) {
styleEle.getParentNode().appendChild(ieStyleEle);
}
}
}
}
}
domContext.stepOver();
} catch (Exception e) {
log.error("Error in OutputStyleRenderer", e);
}
}
private Element buildCssElement(DOMContext domContext) {
Element styleEle = domContext.createElement("link");
styleEle.setAttribute(HTML.REL_ATTR, "stylesheet");
styleEle.setAttribute(HTML.TYPE_ATTR, "text/css");
return styleEle;
}
private int browserType(FacesContext facesContext, UIComponent uiComponent) {
int result = DEFAULT_TYPE;
String useragent = ((OutputStyle)uiComponent).getUserAgent();
if(useragent != null){
return _browserType(useragent);
}
Object o = facesContext.getExternalContext().getRequest();
if (o != null) {
if (!EnvUtils.instanceofPortletRequest(o)) {
HttpServletRequest request = (HttpServletRequest) o;
useragent = request.getHeader("user-agent");
if(useragent == null){
useragent = ((OutputStyle)uiComponent).getUserAgent();
}
if(useragent == null){
//Get User-Agent for Weblogic/Webshpere
useragent = request.getHeader("User-Agent");
}
if(useragent == null){
//Get User-Agent for OC4J
useragent = request.getHeader("USER-AGENT");
}
if(useragent == null){
if (log.isDebugEnabled()) {
log.debug("Not able to find user agent. Returning default");
}
return DEFAULT_TYPE;
}
if(((OutputStyle)uiComponent).getUserAgent() == null){
((OutputStyle)uiComponent).setUserAgent(useragent.toLowerCase());
}
String user = useragent.toLowerCase();
result = _browserType( user);
} else {
if (log.isDebugEnabled()) {
log.debug(
"OutputStyleRenderer: Request is not HttpServletRequest. Its [" +
o.getClass().getName() + "]");
}
}
} else {
if (log.isDebugEnabled()) {
log.debug(
"IceStyleReader: facesContext.getExternalContext().getRequest() is null");
}
}
return result;
}
private int _browserType(String user) {
int result = DEFAULT_TYPE;
if (Beans.isDesignTime()) {
result = DT;
} else {
if (user.indexOf("opera") < 0 && user.indexOf("msie") != -1) {
result = IE;
if(user.indexOf("msie 7") != -1){
result = IE_7;
}
if(user.indexOf("msie 8") != -1){
result = IE_8;
}
} else if (user.indexOf("safari") != -1) {
result = SAFARI;
if(user.indexOf("mobile") != -1) {
result = SAFARI_MOBILE;
}
} else if (user.indexOf("opera") != -1) {
result = OPERA;
if(user.indexOf("240x320") != -1) {
result = OPERA_MOBILE;
}
}
}
return result;
}
// Contributed code. See http://jira.icesoft.org/browse/ICE-8758.
private boolean useSpecific(FacesContext facesContext, String start, String extention) {
// assume we are not going to use the specific file
boolean useSpecific=false;
// this is the file we are going to verify existence of.
browserSpecificFilename = start + extention + CSS_EXTENTION;
String realRoot = facesContext.getExternalContext().getRealPath("/");
if (realRoot != null) {
File realParent = new File(realRoot);
// first use case of absolute file (/...),
//
// find our real root path, we need this to determine
// existence of the file containing the extension.
//
// Then append the browser specific filename to the root and find
// the file.
if (browserSpecificFilename.startsWith("/")) {
File browserSpecificFile = null;
// can start with /[context_name]/
// if it does, we need to strip it off
String contextName = null;
Object servletContextObject = FacesContext.getCurrentInstance().getExternalContext().getContext();
if (servletContextObject != null && servletContextObject instanceof ServletContext) {
contextName = ((ServletContext)servletContextObject).getContextPath();
}
// if context name is available then we need to strip it off of the URL if it
// is there otherwise just use href as-is.
if (contextName != null) {
// starts with context name?
String contextRoot = contextName +"/";
if (browserSpecificFilename.startsWith(contextRoot)) {
browserSpecificFile = new File (realParent,browserSpecificFilename.substring(contextRoot.length()));
}
else {
browserSpecificFile = new File (realParent,browserSpecificFilename.substring(1));
}
}
useSpecific=browserSpecificFile != null ? browserSpecificFile.exists(): false;
}
// second use case of relative file (.../...),
//
// find the directory of the relative path of the request
//
//
// Then append the browser specific filename to the root and find
// the file.
else {
String pathInfo = facesContext.getExternalContext().getRequestServletPath();
if (pathInfo != null) {
pathInfo=new File(pathInfo).getParent();
File realPath = new File (realParent,pathInfo);
File browserSpecificFile = new File (realPath,browserSpecificFilename);
useSpecific=browserSpecificFile.exists();
}
}
}
return useSpecific;
}
}