Package org.apache.openmeetings.web.components.user

Source Code of org.apache.openmeetings.web.components.user.ChatPanel

/*
* 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.openmeetings.web.components.user;

import java.util.Date;

import org.apache.openmeetings.OpenmeetingsVariables;
import org.apache.openmeetings.data.chat.ChatDao;
import org.apache.openmeetings.data.user.dao.UsersDao;
import org.apache.openmeetings.persistence.beans.chat.ChatMessage;
import org.apache.openmeetings.web.app.Application;
import org.apache.openmeetings.web.app.WebSession;
import org.apache.openmeetings.web.components.UserPanel;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormSubmitBehavior;
import org.apache.wicket.ajax.json.JSONException;
import org.apache.wicket.ajax.json.JSONObject;
import org.apache.wicket.behavior.Behavior;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.OnDomReadyHeaderItem;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.form.Button;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.TextArea;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.protocol.ws.IWebSocketSettings;
import org.apache.wicket.protocol.ws.api.IWebSocketConnection;
import org.apache.wicket.protocol.ws.api.IWebSocketConnectionRegistry;
import org.red5.logging.Red5LoggerFactory;
import org.slf4j.Logger;

public class ChatPanel extends UserPanel {
  private static final Logger log = Red5LoggerFactory.getLogger(ChatPanel.class, OpenmeetingsVariables.webAppRootKey);
  private static final long serialVersionUID = -9144707674886211557L;
  private String message;
 
  private JSONObject getMessage(ChatMessage m) throws JSONException {
    return new JSONObject()
      .put("type", "chat")
      .put("msg", new JSONObject()
        .put("id", m.getId())
        .put("message", m.getMessage())
      );
  }

  public ChatPanel(String id) {
    super(id);
    setOutputMarkupId(true);
    setMarkupId(id);

    add(new Behavior() {
      private static final long serialVersionUID = -2205036360048419129L;

      @Override
      public void renderHead(Component component, IHeaderResponse response) {
        ChatDao dao = Application.getBean(ChatDao.class);
        try {       
          StringBuilder sb = new StringBuilder();
          for (ChatMessage m : dao.get(0, Integer.MAX_VALUE)) {
            sb.append("addChatMessage(").append(getMessage(m).toString()).append(");");
          }
          if (sb.length() > 0) {
            response.render(OnDomReadyHeaderItem.forScript(sb.toString()));
          }
        } catch (JSONException e) {
         
        }
        super.renderHead(component, response);
      }
    });
    add(new WebMarkupContainer("messages").setMarkupId("messageArea"));
    final Form<Void> f = new Form<Void>("sendForm");
    f.add(new TextArea<String>("message", new PropertyModel<String>(ChatPanel.this, "message")).setOutputMarkupId(true));
    f.add(new Button("send").add(new AjaxFormSubmitBehavior("onclick"){
      private static final long serialVersionUID = -3746739738826501331L;
     
      protected void onSubmit(AjaxRequestTarget target) {
        ChatDao dao = Application.getBean(ChatDao.class);
        ChatMessage m = new ChatMessage();
        m.setMessage(message);
        m.setSent(new Date());
        m.setFromUser(Application.getBean(UsersDao.class).get(WebSession.getUserId()));
        dao.update(m);
        IWebSocketConnectionRegistry reg = IWebSocketSettings.Holder.get(getApplication()).getConnectionRegistry();
        for (IWebSocketConnection c : reg.getConnections(getApplication())) {
          try {
            c.sendMessage(getMessage(m).toString());
          } catch(Exception e) {
            log.error("Error while sending message", e);
          }
        }
        ChatPanel.this.message = "";
        target.add(f);
      };
    }));
    add(f.setOutputMarkupId(true));
  }

}
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