/*
* Copyright 2009-2014 PrimeTek.
*
* 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 org.primefaces.mobile.renderkit;
import java.io.IOException;
import java.util.Map;
import javax.el.ELContext;
import javax.el.ExpressionFactory;
import javax.el.ValueExpression;
import javax.faces.application.ProjectStage;
import javax.faces.application.Resource;
import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.render.Renderer;
import org.primefaces.config.ConfigContainer;
import org.primefaces.context.RequestContext;
public class HeadRenderer extends Renderer {
@Override
public void encodeBegin(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
ConfigContainer cc = RequestContext.getCurrentInstance().getApplicationContext().getConfig();
ProjectStage projectStage = context.getApplication().getProjectStage();
writer.startElement("head", component);
//First facet
UIComponent first = component.getFacet("first");
if(first != null) {
first.encodeAll(context);
}
writer.write("<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"/>");
String theme = resolveTheme(context);
if(theme == null) {
renderCSS(context, "mobile/jquery-mobile.css", "primefaces");
}
else {
renderCSS(context, "theme.css", "primefaces-" + theme);
renderCSS(context, "mobile/jquery-mobile-icons.css", "primefaces");
renderCSS(context, "mobile/jquery-mobile-structure.css", "primefaces");
}
renderCSS(context, "mobile/primefaces-mobile.css", "primefaces");
if(cc.isFontAwesomeEnabled()) {
renderCSS(context, "fa/font-awesome.css", "primefaces");
}
renderJS(context, "jquery/jquery.js", "primefaces");
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write("$(document).on('mobileinit', function(){");
writer.write("$.mobile.ajaxEnabled = false;");
writer.write("$.mobile.pushStateEnabled = false;");
writer.write("$.mobile.page.prototype.options.domCache = true;");
UIComponent init = component.getFacet("init");
if(init != null) {
init.encodeAll(context);
}
writer.write("});");
writer.endElement("script");
renderJS(context, "mobile/jquery-mobile.js", "primefaces");
renderJS(context, "primefaces-mobile.js", "primefaces");
//Registered Resources
UIViewRoot viewRoot = context.getViewRoot();
for(UIComponent resource : viewRoot.getComponentResources(context, "head")) {
boolean shouldRender = true;
Map<String,Object> attrs = resource.getAttributes();
String library = (String) attrs.get("library");
if(library != null && library.equals("primefaces")) {
String resourceName = (String) attrs.get("name");
if(resourceName.startsWith("jquery")||resourceName.startsWith("primefaces")) {
shouldRender = false;
}
}
if(shouldRender) {
resource.encodeAll(context);
}
}
if(cc.isLegacyWidgetNamespace()) {
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write("PrimeFaces.settings.legacyWidgetNamespace = true;");
writer.endElement("script");
}
if (!projectStage.equals(ProjectStage.Production)) {
writer.write("PrimeFaces.settings.projectStage='" + projectStage.toString() + "';");
}
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
//Last facet
UIComponent last = component.getFacet("last");
if(last != null) {
last.encodeAll(context);
}
writer.endElement("head");
}
protected String resolveTheme(FacesContext context) {
String theme = null;
String themeConfigValue = RequestContext.getCurrentInstance().getApplicationContext().getConfig().getMobileTheme();
if(themeConfigValue != null) {
ELContext elContext = context.getELContext();
ExpressionFactory expressionFactory = context.getApplication().getExpressionFactory();
ValueExpression ve = expressionFactory.createValueExpression(elContext, themeConfigValue, String.class);
theme = ve.isLiteralText() ? themeConfigValue: (String) ve.getValue(elContext);
}
return theme;
}
private void renderJS(FacesContext context, String name, String library) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Resource resource = context.getApplication().getResourceHandler().createResource(name, library);
if(resource != null) {
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.writeAttribute("src", resource.getRequestPath(), null);
writer.endElement("script");
}
}
private void renderCSS(FacesContext context, String name, String library) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Resource resource = context.getApplication().getResourceHandler().createResource(name, library);
if(resource != null) {
writer.startElement("link", null);
writer.writeAttribute("type", "text/css", null);
writer.writeAttribute("rel", "stylesheet", null);
writer.writeAttribute("href", resource.getRequestPath(), null);
writer.endElement("link");
}
}
}