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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.acacia.client.widgets.serialdate;

import org.opencms.gwt.client.ui.input.CmsTextBox;
import org.opencms.gwt.client.ui.input.I_CmsFormWidget;
import org.opencms.gwt.client.ui.input.form.CmsWidgetFactoryRegistry;
import org.opencms.gwt.client.ui.input.form.I_CmsFormWidgetFactory;

import java.util.Map;

import com.google.common.base.Optional;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;

/** An extension of {@link CmsTextBox} that keeps information about its focus state. */
public class CmsFocusAwareTextBox extends CmsTextBox {

    /** Flag, indicating if the text box is currently focused. */
    boolean m_hasFocus;

    /** Default constructor. */
    public CmsFocusAwareTextBox() {
        super();
        super.addFocusHandler(new FocusHandler() {

            public void onFocus(FocusEvent event) {

                m_hasFocus = true;

            }
        });
        super.addBlurHandler(new BlurHandler() {

            public void onBlur(BlurEvent event) {

                m_hasFocus = false;

            }
        });
    }

    /**
     * Initializes this class.
     */
    public static void initClass() {

        // registers a factory for creating new instances of this widget
        CmsWidgetFactoryRegistry.instance().registerFactory(WIDGET_TYPE, new I_CmsFormWidgetFactory() {

            /**
             * @see org.opencms.gwt.client.ui.input.form.I_CmsFormWidgetFactory#createWidget(java.util.Map, com.google.common.base.Optional)
             */
            public I_CmsFormWidget createWidget(Map widgetParams, Optional defaultValue) {

                return new CmsFocusAwareTextBox().colorWhite();
            }
        });
    }

    /**
     * Returns a flag, indicating if the text box is currently focused.
     * @return a flag, indicating if the text box is currently focused.
     */
    public boolean isFocused() {

        return m_hasFocus;
    }

}