org.openelis.modules.main.client.OpenELISEntry.java Source code

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Here is the source code for org.openelis.modules.main.client.OpenELISEntry.java

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/**
 * Exhibit A - UIRF Open-source Based Public Software License.
 * 
 * The contents of this file are subject to the UIRF Open-source Based Public
 * Software License(the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * openelis.uhl.uiowa.edu
 * 
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 * 
 * The Original Code is OpenELIS code.
 * 
 * The Initial Developer of the Original Code is The University of Iowa.
 * Portions created by The University of Iowa are Copyright 2006-2008. All
 * Rights Reserved.
 * 
 * Contributor(s): ______________________________________.
 * 
 * Alternatively, the contents of this file marked "Separately-Licensed" may be
 * used under the terms of a UIRF Software license ("UIRF Software License"), in
 * which case the provisions of a UIRF Software License are applicable instead
 * of those above.
 */
package org.openelis.modules.main.client;

import static org.openelis.modules.main.client.Logger.*;

import java.util.logging.Level;

import org.openelis.modules.main.client.resources.OpenELISResources;
import org.openelis.ui.resources.UIResources;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.RunAsyncCallback;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.debug.client.DebugInfo;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.Event.NativePreviewEvent;
import com.google.gwt.user.client.Event.NativePreviewHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.RootLayoutPanel;
import com.google.gwt.user.client.ui.RootPanel;

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class OpenELISEntry implements EntryPoint, NativePreviewHandler {
    /**
     * This is the entry point method.
     */
    public void onModuleLoad() {
        // All Events will flow this this handler first before any other
        // handlers.
        Event.addNativePreviewHandler(this);
        OpenELISResources.INSTANCE.style().ensureInjected();
        OpenELISResources.INSTANCE.icon().ensureInjected();
        UIResources.INSTANCE.buttonPanel().ensureInjected();
        UIResources.INSTANCE.calendar().ensureInjected();
        UIResources.INSTANCE.collapse().ensureInjected();
        UIResources.INSTANCE.text().ensureInjected();
        UIResources.INSTANCE.dragDrop().ensureInjected();
        UIResources.INSTANCE.general().ensureInjected();
        DebugInfo.setDebugIdPrefix("");

        GWT.setUncaughtExceptionHandler(new GWT.UncaughtExceptionHandler() {
            public void onUncaughtException(Throwable e) {
                e.printStackTrace();
                if (e.getMessage() == null)
                    logger.log(Level.SEVERE, "UNKNOWN", e);
                else
                    logger.log(Level.SEVERE, e.getMessage(), e);
                Window.alert("Sorry, but an unexpected error has occurred.  Please contact IT support");
            }
        });

        Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand() {
            public void execute() {
                GWT.runAsync(new RunAsyncCallback() {
                    public void onSuccess() {
                        try {
                            Window.enableScrolling(true);
                            RootPanel.get("load").getElement().removeFromParent();
                            RootLayoutPanel.get().add(new org.openelis.modules.main.client.OpenELIS());
                            SessionTimer.start();
                        } catch (Throwable e) {
                            e.printStackTrace();
                            remote.log(Level.SEVERE, e.getMessage(), e);
                            Window.alert("Unable to start app : " + e.getMessage());
                        }
                    }

                    public void onFailure(Throwable caught) {
                        remote.log(Level.SEVERE, caught.getMessage(), caught);
                        Window.alert(caught.getMessage());
                    }
                });
            }
        });
    }

    /**
     * All events created by the application will flow through here. The event
     * can be inspected for type and other user input then certain actions can
     * be taken such as preventing default browser before or even cancelling
     * events
     */
    public void onPreviewNativeEvent(NativePreviewEvent event) {
        // This check is to prevent FireFox from highlighting HTML Elements when
        // mouseDown is combined with the ctrl key
        if (event.getTypeInt() == Event.ONMOUSEDOWN && event.getNativeEvent().getCtrlKey())
            event.getNativeEvent().preventDefault();
        if (event.getTypeInt() == Event.ONMOUSEWHEEL && event.getNativeEvent().getShiftKey())
            event.getNativeEvent().preventDefault();

        if (event.getTypeInt() == Event.ONKEYDOWN
                && (event.getNativeEvent().getCtrlKey() || event.getNativeEvent().getAltKey())) {
            KeyDownEvent.fireNativeEvent(event.getNativeEvent(), OpenELIS.browser);
        }

    }
}