Java tutorial
/* * * Copyright (C) 2007-2015 Licensed to the Comunes Association (CA) under * one or more contributor license agreements (see COPYRIGHT for details). * The CA licenses this file to you under the GNU Affero General Public * License version 3, (the "License"); you may not use this file except in * compliance with the License. This file is part of kune. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ package cc.kune.gspace.client.i18n; import java.util.List; import cc.kune.common.client.errors.UIException; import cc.kune.common.shared.i18n.I18nTranslationService; import cc.kune.common.shared.utils.SimpleCallback; import cc.kune.common.shared.utils.TextUtils; import cc.kune.core.client.state.Session; import cc.kune.core.shared.dto.I18nLanguageSimpleDTO; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.InlineLabel; import com.watopi.chosen.client.ChosenOptions; import com.watopi.chosen.client.event.ChosenChangeEvent; import com.watopi.chosen.client.event.ChosenChangeEvent.ChosenChangeHandler; import com.watopi.chosen.client.gwt.ChosenListBox; /** * The Class AbstractLanguageSelectorPanel. * * @author vjrj@ourproject.org (Vicente J. Ruiz Jurado) */ public abstract class AbstractLanguageSelectorPanel extends HorizontalPanel { /** The Constant LANG_FIELD. */ public static final String LANG_FIELD = "k-langsp-lf"; private final InlineLabel fieldSep; private final InlineLabel fieldTitle; /** The i18n. */ private final I18nTranslationService i18n; private ChosenListBox langChoose; /** The session. */ private final Session session; private final FlowPanel titlePanel; /** * Instantiates a new abstract language selector panel. * * @param i18n * the i18n * @param session * the session * @param type * the type */ public AbstractLanguageSelectorPanel(final I18nTranslationService i18n, final Session session, final LanguageSelectorType type) { super(); this.i18n = i18n; this.session = session; createLangChoose(type); titlePanel = new FlowPanel(); fieldTitle = new InlineLabel(); fieldSep = new InlineLabel(); fieldTitle.addStyleName("k-fl"); fieldTitle.addStyleName("x-form-item-label"); fieldTitle.addStyleName("k-white-nowrap"); fieldSep.addStyleName("k-fl"); fieldSep.addStyleName("x-form-item-label"); langChoose.addStyleName("k-fl"); titlePanel.addStyleName("k-fl"); titlePanel.addStyleName("kune-Margin-10-r"); // fieldTitle.setWidth("140px"); titlePanel.add(fieldTitle); titlePanel.add(fieldSep); super.add(titlePanel); super.add(langChoose); super.addStyleName("k-clean"); } /** * Adds the change listener. * * @param onChange * the on change */ public void addChangeListener(final SimpleCallback onChange) { langChoose.addChosenChangeHandler(new ChosenChangeHandler() { @Override public void onChange(final ChosenChangeEvent event) { onChange.onCallback(); } }); } private void addItem(final I18nLanguageSimpleDTO lang) { langChoose.addItem(lang.getEnglishName(), lang.getCode()); } @Override public void clear() { reset(); } private void createLangChoose(final LanguageSelectorType type) { final ChosenOptions options = new ChosenOptions(); options.setNoResultsText(i18n.t("Language not found")); options.setPlaceholderText(i18n.t("Enter language")); options.setSearchContains(true); langChoose = new ChosenListBox(false, options); final List<I18nLanguageSimpleDTO> langs = type == LanguageSelectorType.ONLY_FULL_TRANSLATED ? session.getFullTranslatedLanguages() : session.getLanguages(); // Note: First empty, from the gwtchosen doc: on single selects, the first // element is assumed to be selected by the browser. To take advantage of // the default text support, you will need to include a blank option as the // first element of your select list. langChoose.addItem(""); for (final I18nLanguageSimpleDTO lang : langs) { switch (type) { case ALL_EXCEPT_ENGLISH: case ONLY_FULL_TRANSLATED: if (!lang.getCode().equals("en")) { addItem(lang); } break; case ALL: default: addItem(lang); break; } } } /** * Gets the language. * * @return the language */ public I18nLanguageSimpleDTO getLanguage() { final String langCode = langChoose.getSelectedValue(); if (TextUtils.isEmpty(langCode)) { return null; } for (final I18nLanguageSimpleDTO lang : session.getLanguages()) { if (lang.getCode().equals(langCode)) { return lang; } } throw new UIException("Language not found"); } /** * Gets the language code. * * @return the language code */ public String getLanguageCode() { return langChoose.getSelectedValue(); } /** * Gets the language english name. * * @return the language english name */ public String getLanguageEnglishName() { final I18nLanguageSimpleDTO lang = getLanguage(); return lang == null ? null : lang.getEnglishName(); } private void reset() { // Read Note in createLangChoose() langChoose.setItemSelected(0, true); } public void setEnabled(final Boolean enabled) { langChoose.setEnabled(enabled); } /** * Sets the lang separator. * * @param separator * the new lang separator */ public void setLangSeparator(final String separator) { fieldSep.setText(separator); } /** * Sets the lang title. * * @param langFieldTitle * the new lang title */ public void setLangTitle(final String langFieldTitle) { if (langFieldTitle == null) { fieldTitle.setVisible(false); fieldSep.setVisible(false); } else { if (langFieldTitle != null) { fieldTitle.setText(langFieldTitle); } } } /** * Sets the language. * * @param language * the new language */ public void setLanguage(final I18nLanguageSimpleDTO language) { if (language == null) { reset(); } else { for (int i = 0; i < langChoose.getItemCount(); i++) { final String val = langChoose.getValue(i); if (val.equals(language.getCode())) { langChoose.setSelectedIndex(i); return; } } } } public void setTitleWidth(final String width) { titlePanel.setWidth(width); } }