LocaleConfigPanel.java

/*
 * This program 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 2
 * of the License, or (at your option) any later version.
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 * 
 * eHour is sponsored by TE-CON  - http://www.te-con.nl/
 */

package net.rrm.ehour.ui.admin.config.panel;

import net.rrm.ehour.ui.admin.config.MainConfigBackingBean;
import net.rrm.ehour.ui.common.component.AjaxFormComponentFeedbackIndicator;
import net.rrm.ehour.ui.common.model.DateModel;
import org.apache.commons.lang.StringUtils;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior;
import org.apache.wicket.ajax.markup.html.form.AjaxCheckBox;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.ChoiceRenderer;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.model.ResourceModel;

import java.util.Currency;
import java.util.Date;
import java.util.List;
import java.util.Locale;

/**
 * Created on Apr 21, 2009, 4:01:41 PM
 *
 * @author Thies Edeling (thies@te-con.nl)
 */
public class LocaleConfigPanel extends AbstractConfigPanel {
    private static final long serialVersionUID = 3411339351917181309L;

    public LocaleConfigPanel(String id, IModel<MainConfigBackingBean> model) {
        super(id, model);
    }

    @SuppressWarnings("serial")
    @Override
    protected void addFormComponents(Form<?> configForm) {
        final DropDownChoice<Locale> localeDropDownChoice;
        final DropDownChoice<Locale> languageDropDownChoice;
        final AjaxCheckBox onlyTranslationsBox;
        final DropDownChoice<Locale> currencyDropDownChoice;
        final Label dateFormat;

        final MainConfigBackingBean configBackingBean = getPanelModelObject();

        configForm.setOutputMarkupId(true);

        // currency dropdown
        currencyDropDownChoice = new DropDownChoice<>("config.currency",
                new PropertyModel<List<Locale>>(configBackingBean, "availableCurrencies"),
                new LocaleChoiceRenderer(2));
        currencyDropDownChoice.setOutputMarkupId(true);
        configForm.add(currencyDropDownChoice);

        // date format example
        dateFormat = new Label("dateFormat", new DateModel(new Model<>(new Date()), configBackingBean.getLocaleCountry(), DateModel.DATESTYLE_LONG));
        dateFormat.setOutputMarkupId(true);
        configForm.add(dateFormat);

        // language selection
        languageDropDownChoice = new DropDownChoice<>("localeLanguage",
                new PropertyModel<Locale>(configBackingBean, "localeLanguage"),
                new PropertyModel<List<Locale>>(configBackingBean, "availableLanguages"),
                new LocaleChoiceRenderer(1));


        // locale selection
        localeDropDownChoice = new DropDownChoice<>("localeCountry",
                new PropertyModel<Locale>(configBackingBean, "localeCountry"),
                new PropertyModel<List<Locale>>(configBackingBean, "availableLocales"),
                new LocaleChoiceRenderer(0));
        localeDropDownChoice.setOutputMarkupId(true);
        localeDropDownChoice.add(new AjaxFormComponentUpdatingBehavior("onchange") {
            @Override
            protected void onUpdate(AjaxRequestTarget target) {
                // update the date format example
                Locale localeCountry = configBackingBean.getLocaleCountry();
                dateFormat.setDefaultModel(new DateModel(new Model<>(new Date()), localeCountry, DateModel.DATESTYLE_LONG));
                target.add(dateFormat);


                if (localeCountry.getCountry() != null) {
                    // refresh currency
                    configBackingBean.setCurrency(localeCountry);
                    target.add(currencyDropDownChoice);

                    // and langugae
                    configBackingBean.setLocaleLanguage(localeCountry);
                    target.add(languageDropDownChoice);
                }
            }
        });

        configForm.add(localeDropDownChoice);

        // behaviour for language selection
        languageDropDownChoice.setEnabled(!configBackingBean.getConfig().isDontForceLanguage());
        languageDropDownChoice.setOutputMarkupId(true);
        languageDropDownChoice.setRequired(true);
        languageDropDownChoice.setLabel(new ResourceModel("admin.config.locale.languageLabel"));

        configForm.add(new AjaxFormComponentFeedbackIndicator("localeLanguageValidationError", localeDropDownChoice));
        configForm.add(languageDropDownChoice);

        // only translations
        onlyTranslationsBox = new AjaxCheckBox("onlyTranslations", new PropertyModel<Boolean>(configBackingBean, "translationsOnly")) {
            @Override
            protected void onUpdate(AjaxRequestTarget target) {
                target.add(languageDropDownChoice);
            }
        };
        onlyTranslationsBox.setOutputMarkupId(true);
        onlyTranslationsBox.setEnabled(!configBackingBean.getConfig().isDontForceLanguage());
        configForm.add(onlyTranslationsBox);

        // don't force locale checkbox
        configForm.add(new AjaxCheckBox("config.dontForceLanguage") {
            @Override
            protected void onUpdate(AjaxRequestTarget target) {
                languageDropDownChoice.setEnabled(!configBackingBean.getConfig().isDontForceLanguage());
                target.add(languageDropDownChoice);

                onlyTranslationsBox.setEnabled(!configBackingBean.getConfig().isDontForceLanguage());
                target.add(onlyTranslationsBox);
            }
        });
    }

    /**
     * Choice for a locale.
     */
    @SuppressWarnings("serial")
    private static final class LocaleChoiceRenderer extends ChoiceRenderer<Locale> {
        private static final int COUNTRY = 0;
        private static final int LANGUAGE = 1;
        int type;

        // type == 0 -> country, 1 => language, 2=> currency
        public LocaleChoiceRenderer(int type) {
            this.type = type;
        }

        /**
         * @see org.apache.wicket.markup.html.form.IChoiceRenderer#getDisplayValue(Object)
         */
        @Override
        public Object getDisplayValue(Locale locale) {
            String display;

            if (type == COUNTRY) {
                display = locale.getDisplayCountry();

                display += " (" + locale.getDisplayLanguage();

                if (!StringUtils.isBlank(locale.getVariant())) {
                    display += ", " + locale.getDisplayVariant();
                }

                display += ")";
            } else if (type == LANGUAGE) {
                display = locale.getDisplayLanguage();
            } else {
                Currency curr = Currency.getInstance(locale);
                display = locale.getDisplayCountry() + ": " + curr.getSymbol(locale);
            }

            return display;
        }

        @Override
        public String getIdValue(Locale locale, int index) {
            if (type == 0) {
                return locale.getCountry() + "_" + locale.getLanguage();
            } else if (type == 1) {
                return locale.getLanguage();
            } else {
                return locale.getCountry();
            }
        }
    }

}