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OpenCms is an enterprise-ready, easy to use website content management system based on Java and XML technology. Offering a complete set of features, OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.
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/*
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
 *
 * This library 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 library 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.
 *
 * For further information about Alkacon Software, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.opencms.gwt.client;

import org.opencms.gwt.client.rpc.CmsLog;
import org.opencms.gwt.client.ui.CmsNotification;
import org.opencms.gwt.client.ui.css.I_CmsCellTableResources;
import org.opencms.gwt.client.ui.css.I_CmsInputLayoutBundle;
import org.opencms.gwt.client.ui.css.I_CmsLayoutBundle;
import org.opencms.gwt.client.ui.css.I_CmsToolbarButtonLayoutBundle;
import org.opencms.gwt.client.util.CmsClientStringUtil;

import org.timepedia.exporter.client.ExporterUtil;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.shared.UmbrellaException;

/**
 * Handles exception handling and more for entry points.
 *
 * @since 8.0.0
 *
 * @see org.opencms.gwt.CmsLogService
 * @see org.opencms.gwt.shared.rpc.I_CmsLogService
 * @see org.opencms.gwt.shared.rpc.I_CmsLogServiceAsync
 */
public abstract class A_CmsEntryPoint implements EntryPoint {

    /** Flag which indicates whether initClasses() has already been called. */
    private static boolean initializedClasses;

    /**
     * Default constructor.

     */
    protected A_CmsEntryPoint() {

        // just for subclassing
    }

    /**
     * @see com.google.gwt.core.client.EntryPoint#onModuleLoad()
     */
    public void onModuleLoad() {

        enableRemoteExceptionHandler();
        I_CmsLayoutBundle bundle = I_CmsLayoutBundle.INSTANCE;
        bundle.toolbarCss().ensureInjected();
        bundle.buttonCss().ensureInjected();
        bundle.contentEditorCss().ensureInjected();
        bundle.contextmenuCss().ensureInjected();
        bundle.dialogCss().ensureInjected();
        bundle.errorDialogCss().ensureInjected();
        bundle.notificationCss().ensureInjected();
        bundle.dragdropCss().ensureInjected();
        bundle.floatDecoratedPanelCss().ensureInjected();
        bundle.generalCss().ensureInjected();
        bundle.highlightCss().ensureInjected();
        bundle.linkWarningCss().ensureInjected();
        bundle.listItemWidgetCss().ensureInjected();
        bundle.listTreeCss().ensureInjected();
        bundle.stateCss().ensureInjected();
        bundle.tabbedPanelCss().ensureInjected();
        bundle.availabilityCss().ensureInjected();
        bundle.fieldsetCss().ensureInjected();
        bundle.resourceStateCss().ensureInjected();
        bundle.dateBoxCss().ensureInjected();
        bundle.selectAreaCss().ensureInjected();
        bundle.singleLineItemCss().ensureInjected();
        bundle.menuButtonCss().ensureInjected();
        bundle.progressBarCss().ensureInjected();
        bundle.propertiesCss().ensureInjected();
        bundle.globalWidgetCss().ensureInjected();
        bundle.categoryDialogCss().ensureInjected();
        bundle.colorSelectorCss().ensureInjected();
        ExporterUtil.exportAll();

        I_CmsInputLayoutBundle.INSTANCE.inputCss().ensureInjected();

        I_CmsToolbarButtonLayoutBundle.INSTANCE.toolbarButtonCss().ensureInjected();
        I_CmsCellTableResources.INSTANCE.cellTableStyle().ensureInjected();
        initClasses();
    }

    /**
     * Enables client exception logging on the server.

     */
    protected void enableRemoteExceptionHandler() {

        if (!GWT.isScript()) {
            // In hosted mode, uncaught exceptions are easier to debug
            return;
        }

        GWT.setUncaughtExceptionHandler(new GWT.UncaughtExceptionHandler() {

            /**
             * @see com.google.gwt.core.client.GWT.UncaughtExceptionHandler#onUncaughtException(java.lang.Throwable)
             */
            public void onUncaughtException(Throwable t) {

                if (t instanceof UmbrellaException) {
                    t = ((UmbrellaException)t).getCauses().iterator().next();
                }
                String message = CmsClientStringUtil.getMessage(t);
                CmsNotification.get().send(CmsNotification.Type.WARNING, message);
                CmsLog.log(message + "\n" + CmsClientStringUtil.getStackTrace(t, "\n"));
            }
        });
    }

    /**
     * Helper method for initializing the classes implementing {@link I_CmsHasInit}.

     *
     * Calling this method more than once will have no effect.
     */
    private void initClasses() {

        if (!initializedClasses) {
            I_CmsClassInitializer initializer = GWT.create(I_CmsClassInitializer.class);
            initializer.initClasses();
            initializedClasses = true;
        }
    }
}