/*
* Copyright 2009-2011 Prime Technology.
*
* 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.component.media;
import java.io.IOException;
import java.util.Map;
import java.util.UUID;
import javax.faces.application.Resource;
import javax.faces.component.UIComponent;
import javax.faces.component.UIParameter;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.application.PrimeResourceHandler;
import org.primefaces.component.media.player.MediaPlayer;
import org.primefaces.component.media.player.MediaPlayerFactory;
import org.primefaces.model.StreamedContent;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.AgentUtils;
import org.primefaces.util.HTML;
public class MediaRenderer extends CoreRenderer {
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
Media media = (Media) component;
MediaPlayer player = resolvePlayer(context, media);
if(AgentUtils.isIE(context))
encodeObjectTag(context, media, player);
else
encodeEmbedTag(context, media, player);
}
private void encodeObjectTag(FacesContext context, Media media, MediaPlayer player) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String src = getMediaSrc(context, media);
writer.startElement("object", media);
writer.writeAttribute("classid", player.getClassId(), null);
if(player.getCodebase() != null) {
writer.writeAttribute("codebase", player.getCodebase(), null);
}
if(media.getStyleClass() != null) {
writer.writeAttribute("class", media.getStyleClass(), null);
}
renderPassThruAttributes(context, media, HTML.MEDIA_ATTRS);
encodeParam(writer, player.getSourceParam(), src, false);
for(UIComponent child : media.getChildren()) {
if(child instanceof UIParameter) {
UIParameter param = (UIParameter) child;
encodeParam(writer, param.getName(), param.getValue(), false);
}
}
writer.endElement("object");
}
private void encodeEmbedTag(FacesContext context, Media media, MediaPlayer player) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String src = getMediaSrc(context, media);
writer.startElement("embed", media);
writer.writeAttribute("pluginspage", player.getPlugingPage(), null);
writer.writeAttribute("src", src, null);
if(media.getStyleClass() != null) {
writer.writeAttribute("class", media.getStyleClass(), null);
}
if(player.getType() != null) {
writer.writeAttribute("type", player.getType(), null);
}
renderPassThruAttributes(context, media, HTML.MEDIA_ATTRS);
for(UIComponent child : media.getChildren()) {
if(child instanceof UIParameter) {
UIParameter param = (UIParameter) child;
encodeParam(writer, param.getName(), param.getValue(), true);
}
}
writer.endElement("embed");
}
private void encodeParam(ResponseWriter writer, String name, Object value, boolean asAttribute) throws IOException {
if(value == null)
return;
if(asAttribute) {
writer.writeAttribute(name, value, null);
} else {
writer.startElement("param", null);
writer.writeAttribute("name", name, null);
writer.writeAttribute("value", value.toString(), null);
writer.endElement("param");
}
}
private MediaPlayer resolvePlayer(FacesContext context, Media media) {
if(media.getPlayer() != null) {
return MediaPlayerFactory.getPlayer(media.getPlayer());
}
else if(media.getValue() instanceof String){
Map<String,MediaPlayer> players = MediaPlayerFactory.getPlayers();
String[] tokens = ((String) media.getValue()).split("\\.");
String type = tokens[tokens.length-1];
for(MediaPlayer mp : players.values()) {
if(mp.isAppropriatePlayer(type))
return mp;
}
}
throw new IllegalArgumentException("Cannot resolve mediaplayer for media component '" + media.getClientId(context) + "', cannot play source:" + media.getValue());
}
protected String getMediaSrc(FacesContext context, Media media) {
String src = null;
Object value = media.getValue();
if(value == null) {
src = "";
}
else {
if(value instanceof StreamedContent) {
StreamedContent streamedContent = (StreamedContent) value;
Resource resource = context.getApplication().getResourceHandler().createResource("dynamiccontent", "primefaces", streamedContent.getContentType());
String resourcePath = resource.getRequestPath();
String rid = createUniqueContentId(context);
StringBuilder builder = new StringBuilder(resourcePath);
builder.append("&").append(PrimeResourceHandler.DYNAMIC_CONTENT_PARAM).append("=").append(rid);
for(UIComponent kid : media.getChildren()) {
if(kid instanceof UIParameter) {
UIParameter param = (UIParameter) kid;
builder.append("&").append(param.getName()).append("=").append(param.getValue());
}
}
src = builder.toString();
context.getExternalContext().getSessionMap().put(rid, media.getValueExpression("value").getExpressionString());
}
else {
src = getResourceURL(context, (String) value);
}
}
return src;
}
protected String createUniqueContentId(FacesContext context) {
Map<String,Object> session = context.getExternalContext().getSessionMap();
String key = generateKey();
while(session.containsKey(key)) {
key = generateKey();
}
return key;
}
protected String generateKey() {
StringBuilder builder = new StringBuilder();
return builder.append(PrimeResourceHandler.DYNAMIC_CONTENT_PARAM).append("_").append(UUID.randomUUID().toString()).toString();
}
}