/*
* (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and others.
*
* 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.
*
* Contributors:
* Anahide Tchertchian
*/
package org.nuxeo.ecm.web.resources.jsf.handler;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.view.facelets.ComponentConfig;
import javax.faces.view.facelets.FaceletContext;
import javax.faces.view.facelets.FaceletHandler;
import javax.faces.view.facelets.TagAttribute;
import javax.faces.view.facelets.TagConfig;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.nuxeo.ecm.platform.ui.web.tag.handler.LeafFaceletHandler;
import org.nuxeo.ecm.web.resources.api.Resource;
import org.nuxeo.ecm.web.resources.api.ResourceType;
import org.nuxeo.ecm.web.resources.api.service.WebResourceManager;
import org.nuxeo.runtime.api.Framework;
import com.sun.faces.facelets.tag.jsf.html.ScriptResourceHandler;
import com.sun.faces.facelets.tag.jsf.html.StylesheetResourceHandler;
/**
* Tag handler for resource bundles, resolving early resources that need to be included at build time (e.g JSF and XHTML
* resources for now).
*
* @since 7.4
*/
public class ResourceBundleHandler extends PageResourceHandler {
private static final Log log = LogFactory.getLog(ResourceBundleHandler.class);
protected final TagAttribute items;
public ResourceBundleHandler(TagConfig config) {
super(config);
items = getAttribute("items");
}
@SuppressWarnings("unchecked")
@Override
public void apply(FaceletContext ctx, UIComponent parent) throws IOException {
String typeValue = null;
if (type != null) {
typeValue = type.getValue(ctx);
}
ResourceType rtype = resolveType(typeValue);
if (rtype == null) {
log.error("Unsupported type '" + typeValue + "' on tag nxr:resourceBundle at " + tag.getLocation());
return;
}
List<String> bundles = new ArrayList<String>();
if (name != null) {
String bundleName = name.getValue(ctx);
if (!StringUtils.isBlank(bundleName)) {
bundles.add(bundleName);
}
}
if (items != null) {
Object itemsValue = items.getObject(ctx);
if (itemsValue instanceof Collection) {
bundles.addAll((Collection<String>) itemsValue);
} else if (itemsValue instanceof Object[]) {
bundles.addAll(Arrays.asList((String[]) itemsValue));
} else if (itemsValue instanceof String) {
bundles.add((String) itemsValue);
} else {
log.error(String.format("Unsupported value '%s' for attribute 'items' on tag nxr:resourceBundle at %s",
itemsValue, tag.getLocation()));
}
}
if (bundles.isEmpty()) {
return;
}
String flavorValue = null;
if (flavor != null) {
flavorValue = flavor.getValue(ctx);
}
String targetValue = null;
if (target != null) {
targetValue = target.getValue(ctx);
}
String includeTimestampValue = null;
if (includeTimestamp != null) {
includeTimestampValue = includeTimestamp.getValue(ctx);
}
WebResourceManager wrm = Framework.getService(WebResourceManager.class);
LeafFaceletHandler leaf = new LeafFaceletHandler();
if (rtype == ResourceType.any) {
String cssTarget = targetValue;
String jsTarget = targetValue;
String htmlTarget = targetValue;
if (vars != null) {
for (TagAttribute var : vars) {
if ("target_css".equalsIgnoreCase(var.getLocalName())) {
String val = resolveAttribute(ctx, var);
if (val != null) {
cssTarget = val;
}
} else if ("target_js".equalsIgnoreCase(var.getLocalName())) {
String val = resolveAttribute(ctx, var);
if (val != null) {
jsTarget = val;
}
} else if ("target_html".equalsIgnoreCase(var.getLocalName())) {
String val = resolveAttribute(ctx, var);
if (val != null) {
htmlTarget = val;
}
}
}
}
for (String bundle : bundles) {
// first include handlers that match JSF resources
applyBundle(ctx, parent, wrm, bundle, ResourceType.jsfcss, flavorValue, cssTarget,
includeTimestampValue, leaf);
applyBundle(ctx, parent, wrm, bundle, ResourceType.jsfjs, flavorValue, jsTarget, includeTimestampValue,
leaf);
// then include xhtmlfirst templates
applyBundle(ctx, parent, wrm, bundle, ResourceType.xhtmlfirst, flavorValue, null, includeTimestampValue,
leaf);
// then let other resources (css, js, html) be processed by the component at render time
applyBundle(ctx, parent, wrm, bundle, ResourceType.css, flavorValue, cssTarget, includeTimestampValue,
nextHandler);
applyBundle(ctx, parent, wrm, bundle, ResourceType.js, flavorValue, jsTarget, includeTimestampValue,
nextHandler);
applyBundle(ctx, parent, wrm, bundle, ResourceType.html, flavorValue, htmlTarget, includeTimestampValue,
nextHandler);
// then include xhtml templates
applyBundle(ctx, parent, wrm, bundle, ResourceType.xhtml, flavorValue, null, includeTimestampValue,
leaf);
}
} else {
for (String bundle : bundles) {
applyBundle(ctx, parent, wrm, bundle, rtype, flavorValue, targetValue, includeTimestampValue, leaf);
}
}
}
protected void applyBundle(FaceletContext ctx, UIComponent parent, WebResourceManager wrm, String bundle,
ResourceType type, String flavor, String targetValue, String includeTimestamp, FaceletHandler nextHandler)
throws IOException {
switch (type) {
case jsfjs:
for (Resource r : retrieveResources(wrm, bundle, type)) {
String rtarget = r.getTarget();
ComponentConfig config = getJSFResourceComponentConfig(r, "javax.faces.resource.Script",
rtarget == null ? targetValue : rtarget, includeTimestamp, nextHandler);
new ScriptResourceHandler(config).apply(ctx, parent);
}
break;
case jsfcss:
for (Resource r : retrieveResources(wrm, bundle, type)) {
String rtarget = r.getTarget();
ComponentConfig config = getJSFResourceComponentConfig(r, "javax.faces.resource.Stylesheet",
rtarget == null ? targetValue : rtarget, includeTimestamp, nextHandler);
new StylesheetResourceHandler(config).apply(ctx, parent);
}
break;
case xhtmlfirst:
includeXHTML(ctx, parent, retrieveResources(wrm, bundle, type), nextHandler);
break;
case xhtml:
includeXHTML(ctx, parent, retrieveResources(wrm, bundle, type), nextHandler);
break;
case js:
includeResourceBundle(ctx, parent, bundle, type, flavor, targetValue, includeTimestamp, nextHandler);
break;
case css:
includeResourceBundle(ctx, parent, bundle, type, flavor, targetValue, includeTimestamp, nextHandler);
break;
case html:
includeResourceBundle(ctx, parent, bundle, type, flavor, targetValue, includeTimestamp, nextHandler);
break;
default:
break;
}
}
}