/*
* Copyright 2013 eXo Platform SAS
*
* 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 juzu.template;
import juzu.PropertyMap;
import juzu.PropertyType;
import juzu.impl.common.Tools;
import juzu.impl.template.spi.TemplateStub;
import juzu.impl.template.spi.juzu.dialect.gtmpl.MessageKey;
import juzu.io.OutputStream;
import juzu.io.Stream;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
public class TemplateRenderContext {
/** . */
private Map<String, Object> attributes;
/** . */
private final Locale locale;
/** . */
private PropertyMap properties;
/** . */
protected Stream printer;
/** . */
private final TemplateStub stub;
public TemplateRenderContext(TemplateStub stub) {
this(stub, (Map<String, Object>)null);
}
public TemplateRenderContext(TemplateStub stub, Map<String, Object> attributes) {
this(stub, null, attributes, null);
}
public TemplateRenderContext(TemplateStub stub, Locale locale) {
this(stub, null, null, locale);
}
public TemplateRenderContext(TemplateStub stub, PropertyMap properties, Map<String, Object> attributes, Locale locale) {
this.locale = locale;
this.attributes = attributes;
this.stub = stub;
this.properties = properties;
}
/**
* Renders a tag.
*
* @param name the tag name
* @param body the tag body
* @param parameters the tag paremeters
*/
public void renderTag(String name, Renderable body, Map<String, String> parameters) throws IOException {
throw new UnsupportedOperationException();
}
public Map<String, ?> getAttributes() {
return attributes;
}
public Object getAttribute(String name) {
if (name == null) {
throw new NullPointerException("No null attribute name accepted");
}
return attributes != null ? attributes.get(name) : null;
}
public Object setAttribute(String name, Object value) {
if (name == null) {
throw new NullPointerException("No null attribute name accepted");
}
if (value != null) {
if (attributes == null) {
attributes = new HashMap<String, Object>();
}
return attributes.put(name, value);
} else {
if (attributes != null) {
return attributes.remove(name);
} else {
return null;
}
}
}
public Locale getLocale() {
return locale;
}
public Stream getPrinter() {
return printer;
}
public void setTitle(String title) {
if (properties != null) {
properties.setValue(PropertyType.TITLE, title);
}
}
public TemplateStub resolveTemplate(String path) {
return null;
}
public Object resolveBean(String expression) throws InvocationTargetException {
return null;
}
public String resolveMessage(MessageKey key) {
return key.toString();
}
public StringBuilder render() throws IOException {
StringBuilder buffer = new StringBuilder();
OutputStream consumer = OutputStream.create(Tools.UTF_8, buffer);
render(consumer);
return buffer;
}
public void render(Stream printer) throws IOException {
if (this.printer != null) {
throw new IllegalStateException("Already rendering");
}
//
this.printer = printer;
//
try {
stub.render(this);
}
finally {
this.printer = null;
}
}
}