com.calclab.emite.example.pingpong.client.events.SessionEventsSupervisor.java Source code

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Here is the source code for com.calclab.emite.example.pingpong.client.events.SessionEventsSupervisor.java

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/*
 * ((e)) emite: A pure Google Web Toolkit XMPP library
 * Copyright (c) 2008-2011 The Emite development team
 * 
 * This file is part of Emite.
 *
 * Emite is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *
 * Emite is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with Emite.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.calclab.emite.example.pingpong.client.events;

import com.calclab.emite.core.client.events.StateChangedEvent;
import com.calclab.emite.core.client.events.StateChangedHandler;
import com.calclab.emite.core.client.xmpp.session.SessionStates;
import com.calclab.emite.core.client.xmpp.session.XmppSession;
import com.calclab.emite.example.pingpong.client.PingPongDisplay;
import com.calclab.emite.example.pingpong.client.PingPongDisplay.Style;
import com.google.gwt.user.client.Timer;
import com.google.inject.Inject;

public class SessionEventsSupervisor {

    private long currentSessionLogin;
    private int refreshTime;

    @Inject
    public SessionEventsSupervisor(final XmppSession session, final PingPongDisplay display) {
        currentSessionLogin = 0;
        refreshTime = 1000;

        // NO NEED OF LOGIN: BROWSER MODULE DOES THAT FOR US!!
        session.addSessionStateChangedHandler(true, new StateChangedHandler() {
            @Override
            public void onStateChanged(final StateChangedEvent event) {
                display.print(("SESSION : " + event.getState()), Style.session);
                if (event.is(SessionStates.ready)) {
                    currentSessionLogin = System.currentTimeMillis();
                    display.getCurrentUser().setText("Logged as: " + session.getCurrentUserURI());
                    trackSessionLength(session, display);
                } else if (event.is(SessionStates.disconnected)) {
                    display.getCurrentUser().setText(" Not logged in");
                    currentSessionLogin = 0;
                    refreshTime = 1000;
                }
            }
        });
    }

    protected void trackSessionLength(final XmppSession session, final PingPongDisplay display) {
        if (session.isReady()) {
            final long currentTime = System.currentTimeMillis();
            final int totalSeconds = (int) ((currentTime - currentSessionLogin) / 1000);
            final int minutes = totalSeconds / 60;
            final int seconds = totalSeconds % 60;
            display.getSessionStatus()
                    .setText(" Session activity for " + minutes + " minutes and " + seconds + " seconds.");
            if (refreshTime < 10000) {
                refreshTime += 500;
            }
            new Timer() {
                @Override
                public void run() {
                    trackSessionLength(session, display);
                }
            }.schedule(refreshTime);
        } else {
            display.getSessionStatus().setText(" Session is not ready.");
        }
    }

}