/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.wicket.protocol.ws.jee;
import java.nio.ByteBuffer;
import java.util.Collection;
import javax.websocket.RemoteEndpoint;
import javax.websocket.RemoteEndpoint.Async;
import org.apache.wicket.Component;
import org.apache.wicket.MarkupContainer;
import org.apache.wicket.Page;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.XmlAjaxResponse;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.protocol.ws.api.IWebSocketRequestHandler;
import org.apache.wicket.request.ILogData;
import org.apache.wicket.request.IRequestCycle;
import org.apache.wicket.request.Response;
import org.apache.wicket.request.component.IRequestablePage;
import org.apache.wicket.request.mapper.parameter.PageParameters;
/**
* Implementation of interface AjaxRequestTarget that allows to perform the following action via websocket:
* - update the component markup.
* - append/prepend JavaScript to the current response.
*
* @author andrea
*
*/
public class WebsocketRequestTarget implements AjaxRequestTarget, IWebSocketRequestHandler {
private final Page page;
private final XmlAjaxResponse ajaxResponse;
private final Response response;
private final RemoteEndpoint.Async remote;
public WebsocketRequestTarget(Page page, Response response, Async remote) {
super();
this.page = page;
this.response = response;
this.remote = remote;
this.ajaxResponse = new XmlAjaxResponse(page)
{
@Override
protected void fireOnAfterRespondListeners(Response response)
{
}
@Override
protected void fireOnBeforeRespondListeners()
{
}
};
}
@Override
public Integer getPageId() {
return page.getPageId();
}
@Override
public boolean isPageInstanceCreated() {
return true;
}
@Override
public Integer getRenderCount() {
return page.getRenderCount();
}
@Override
public Class<? extends IRequestablePage> getPageClass() {
return page.getPageClass();
}
@Override
public PageParameters getPageParameters() {
return page.getPageParameters();
}
@Override
public void respond(IRequestCycle requestCycle) {
}
@Override
public void detach(IRequestCycle requestCycle) {
}
@Override
public ILogData getLogData() {
return null;
}
public void add(Component component) {
add(component, component.getMarkupId());
}
@Override
public void add(Component component, String markupId) {
ajaxResponse.add(component, markupId);
}
@Override
public void add(Component... components) {
for (Component component : components) {
add(component);
}
}
@Override
public void addChildren(MarkupContainer parent, Class<?> childCriteria) {
// TODO Auto-generated method stub
}
@Override
public void addListener(IListener listener) {
// TODO Auto-generated method stub
}
@Override
public void appendJavaScript(CharSequence javascript) {
ajaxResponse.appendJavaScript(javascript);
}
@Override
public void prependJavaScript(CharSequence javascript) {
ajaxResponse.prependJavaScript(javascript);
}
@Override
public void registerRespondListener(ITargetRespondListener listener) {
// TODO Auto-generated method stub
}
@Override
public Collection<? extends Component> getComponents() {
// TODO Auto-generated method stub
return null;
}
@Override
public void focusComponent(Component component) {
// TODO Auto-generated method stub
}
@Override
public IHeaderResponse getHeaderResponse() {
// TODO Auto-generated method stub
return null;
}
@Override
public String getLastFocusedElementId() {
// TODO Auto-generated method stub
return null;
}
@Override
public Page getPage() {
return page;
}
public void writeToResponse(){
ajaxResponse.writeTo(response, "UTF-8");
}
@Override
public void push(CharSequence message) {
remote.sendText(message.toString());
}
@Override
public void push(byte[] message, int offset, int length) {
ByteBuffer dataBuffer = ByteBuffer.allocate(length);
dataBuffer.put(message, offset, length);
remote.sendBinary(dataBuffer);
}
public void executeJavaScript(String javaScriptCode){
push("<execute-javascript>\n" + javaScriptCode
+ "\n</execute-javascript>");
}
}