org.mobicents.slee.container.management.console.client.sleestate.SleeStatePanel.java Source code

Introduction

Here is the source code for org.mobicents.slee.container.management.console.client.sleestate.SleeStatePanel.java

Source

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2003-2011, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This 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 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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 this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.mobicents.slee.container.management.console.client.sleestate;

import org.mobicents.slee.container.management.console.client.ServerCallback;
import org.mobicents.slee.container.management.console.client.ServerConnection;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * 
 * @author Stefano Zappaterra
 * @author <a href="mailto:brainslog@gmail.com"> Alexandre Mendonca </a>
 */
public class SleeStatePanel extends VerticalPanel {

    protected HTML state = new HTML("NOT AVAILABLE");

    protected Button startButton = new Button();

    protected Button stopButton = new Button();

    protected Button shutdownButton = new Button();

    protected Timer timer;

    private boolean isTimerRunning = false;

    private SleeStateServiceAsync service = ServerConnection.sleeStateServiceAsync;

    private SleeStateInfo sleeStateInfo = new SleeStateInfo(SleeStateInfo.STOPPED);

    public SleeStatePanel() {
        super();

        startButton.setTitle("Start");
        stopButton.setTitle("Stop");
        shutdownButton.setTitle("Shutdown");
        final Label header = new Label("Mobicents JAIN SLEE is");
        ServerCallback callback = new ServerCallback(this) {
            public void onSuccess(Object result) {
                header.setText((String) result + " is");
            }
        };
        service.getVersion(callback);
        HorizontalPanel buttonsPanel = new HorizontalPanel();
        buttonsPanel.setSpacing(5);
        buttonsPanel.add(startButton);
        buttonsPanel.add(stopButton);
        buttonsPanel.add(shutdownButton);

        startButton.setEnabled(false);
        stopButton.setEnabled(false);
        shutdownButton.setEnabled(false);

        startButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                onStartButton();
            }
        });

        stopButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                onStopButton();
            }
        });

        shutdownButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                onShutdownButton();
            }
        });

        timer = new Timer() {
            public void run() {
                updateState();
            }
        };

        add(header);
        add(state);
        add(buttonsPanel);

        setStyleName("sleestate-SleeStatePanel");
        setSpacing(5);
        state.setStyleName("sleestate-SleeStatePanel-state");

        setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
        setCellHorizontalAlignment(state, HasHorizontalAlignment.ALIGN_CENTER);
        setCellHorizontalAlignment(buttonsPanel, HasHorizontalAlignment.ALIGN_CENTER);
    }

    protected void onStartButton() {
        ServerCallback callback = new ServerCallback(this) {
        };
        service.start(callback);
    }

    protected void onStopButton() {
        ServerCallback callback = new ServerCallback(this) {
        };
        service.stop(callback);
    }

    protected void onShutdownButton() {
        ServerCallback callback = new ServerCallback(this) {
        };
        service.shutdown(callback);
    }

    private void updateStateLabel() {
        state.setHTML("<image src='images/sleestate." + sleeStateInfo.getState().toLowerCase()
                + ".gif' align='absbottom' />&nbsp;" + sleeStateInfo.getState());

        state.setStyleName("sleestate-SleeStatePanel-state");
        state.addStyleName("sleestate-SleeStatePanel-state-" + sleeStateInfo.getState().toLowerCase());

    }

    private void setButtonEnabled(Button button, boolean enabled) {
        String e = enabled ? "" : ".disabled";
        button.setHTML("<image src='images/sleestate." + button.getTitle().toLowerCase() + e
                + ".gif' align='absbottom'/>" + button.getTitle());
        button.setEnabled(enabled);
    }

    private void updateButtons() {
        if (sleeStateInfo.getState().equals(SleeStateInfo.STOPPED)) {
            setButtonEnabled(startButton, true);
            setButtonEnabled(stopButton, false);
            setButtonEnabled(shutdownButton, true);
        } else if (sleeStateInfo.getState().equals(SleeStateInfo.STARTING)) {
            setButtonEnabled(startButton, false);
            setButtonEnabled(stopButton, false);
            setButtonEnabled(shutdownButton, false);
        } else if (sleeStateInfo.getState().equals(SleeStateInfo.RUNNING)) {
            setButtonEnabled(startButton, false);
            setButtonEnabled(stopButton, true);
            setButtonEnabled(shutdownButton, false);
        } else if (sleeStateInfo.getState().equals(SleeStateInfo.STOPPING)) {
            setButtonEnabled(startButton, false);
            setButtonEnabled(stopButton, false);
            setButtonEnabled(shutdownButton, false);
        }
    }

    private void updateGUI() {
        updateStateLabel();
        updateButtons();
    }

    private void updateState() {
        ServerCallback callback = new ServerCallback(this) {
            public void onSuccess(Object result) {
                sleeStateInfo = (SleeStateInfo) result;
                updateGUI();
                timer.schedule(1000);
            }
        };
        service.getState(callback);
    }

    protected void startUpdating() {
        if (isTimerRunning)
            return;

        timer.run();
        isTimerRunning = true;
    }

    protected void stopUpdating() {
        if (!isTimerRunning)
            return;

        timer.cancel();
        isTimerRunning = false;
    }
}