org.gss_project.gss.web.client.SessionExpiredDialog.java Source code

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Here is the source code for org.gss_project.gss.web.client.SessionExpiredDialog.java

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/*
 * Copyright 2009 Electronic Business Systems Ltd.
 *
 * This file is part of GSS.
 *
 * GSS is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GSS 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.gss_project.gss.web.client;

import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.user.client.Event.NativePreviewEvent;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * @author kman
 *
 */
public class SessionExpiredDialog extends DialogBox {
    /**
     * The widget constructor.
     */
    public SessionExpiredDialog() {
        // Set the dialog's caption.
        setText("Session Expired");
        setAnimationEnabled(true);
        VerticalPanel outer = new VerticalPanel();

        // Create the text and set a style name so we can style it with CSS.
        HTML text = new HTML(
                "<p>Your session has expired. You will have to reauthenticate with your Identity Provider.</p> ");
        text.setStyleName("gss-AboutText");
        outer.add(text);

        // Create the 'OK' button, along with a listener that hides the dialog
        // when the button is clicked.
        Button confirm = new Button("Proceed", new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                GSS.get().authenticateUser();
                hide();
            }
        });
        outer.add(confirm);
        outer.setCellHorizontalAlignment(confirm, HasHorizontalAlignment.ALIGN_CENTER);
        outer.setSpacing(8);
        setWidget(outer);
    }

    @Override
    protected void onPreviewNativeEvent(NativePreviewEvent preview) {
        super.onPreviewNativeEvent(preview);

        NativeEvent evt = preview.getNativeEvent();
        if (evt.getType().equals("keydown"))
            // Use the popup's key preview hooks to close the dialog when either
            // enter or escape is pressed.
            switch (evt.getKeyCode()) {
            case KeyCodes.KEY_ENTER:
                GSS.get().authenticateUser();
                hide();
                break;
            case KeyCodes.KEY_ESCAPE:
                hide();
                break;
            }
    }

}