Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License") + you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.apache.openmeetings.web.admin.labels; import static org.apache.openmeetings.util.OpenmeetingsVariables.webAppRootKey; import java.io.IOException; import java.io.InputStream; import java.util.AbstractMap; import java.util.Iterator; import java.util.List; import java.util.Locale; import java.util.Map; import org.apache.openmeetings.db.dao.label.LabelDao; import org.apache.openmeetings.db.entity.label.StringLabel; import org.apache.openmeetings.web.admin.AdminPanel; import org.apache.openmeetings.web.admin.SearchableDataView; import org.apache.openmeetings.web.app.Application; import org.apache.openmeetings.web.common.BasePanel; import org.apache.openmeetings.web.common.ConfirmableAjaxBorder; import org.apache.openmeetings.web.common.PagedEntityListPanel; import org.apache.openmeetings.web.data.DataViewContainer; import org.apache.openmeetings.web.data.OmOrderByBorder; import org.apache.openmeetings.web.data.SearchableDataProvider; import org.apache.openmeetings.web.util.AjaxDownload; import org.apache.openmeetings.web.util.BootstrapFileUploadBehavior; import org.apache.wicket.AttributeModifier; import org.apache.wicket.ajax.AjaxEventBehavior; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.form.AjaxFormSubmitBehavior; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.core.request.handler.IPartialPageRequestHandler; import org.apache.wicket.extensions.ajax.markup.html.form.upload.UploadProgressBar; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.upload.FileUpload; import org.apache.wicket.markup.html.form.upload.FileUploadField; import org.apache.wicket.markup.repeater.Item; import org.apache.wicket.util.resource.AbstractResourceStream; import org.apache.wicket.util.resource.ResourceStreamNotFoundException; import org.red5.logging.Red5LoggerFactory; import org.slf4j.Logger; import com.googlecode.wicket.jquery.core.Options; import com.googlecode.wicket.jquery.ui.form.button.AjaxButton; import com.googlecode.wicket.kendo.ui.panel.KendoFeedbackPanel; /** * Language Editor, add/insert/update Label and add/delete language contains several Forms and one list * * @author solomax, swagner * */ public class LangPanel extends AdminPanel { private static final long serialVersionUID = 1L; private static final Logger log = Red5LoggerFactory.getLogger(LangPanel.class, webAppRootKey); private final KendoFeedbackPanel feedback = new KendoFeedbackPanel("feedback", new Options("button", true)); private final LangForm langForm; private FileUploadField fileUploadField; final WebMarkupContainer listContainer = new WebMarkupContainer("listContainer");; Map.Entry<Long, Locale> language; @Override public BasePanel onMenuPanelLoad(IPartialPageRequestHandler handler) { super.onMenuPanelLoad(handler); handler.appendJavaScript("labelsInit();"); return this; } public LangPanel(String id) { super(id); // Create feedback panels add(feedback.setOutputMarkupId(true)); language = new AbstractMap.SimpleEntry<Long, Locale>(1L, Locale.ENGLISH); final LabelsForm form = new LabelsForm("form", this, new StringLabel(null, null)); form.showNewRecord(); add(form); final SearchableDataView<StringLabel> dataView = new SearchableDataView<StringLabel>("langList", new SearchableDataProvider<StringLabel>(LabelDao.class) { private static final long serialVersionUID = 1L; @Override protected LabelDao getDao() { return (LabelDao) super.getDao(); } @Override public long size() { return getDao().count(language.getValue(), search); } @Override public Iterator<? extends StringLabel> iterator(long first, long count) { return getDao().get(language.getValue(), search, (int) first, (int) count, getSort()) .iterator(); } }) { private static final long serialVersionUID = 1L; @Override protected void populateItem(final Item<StringLabel> item) { final StringLabel fv = item.getModelObject(); item.add(new Label("key")); item.add(new Label("value")); item.add(new AjaxEventBehavior("click") { private static final long serialVersionUID = 1L; @Override protected void onEvent(AjaxRequestTarget target) { form.setModelObject(fv); form.hideNewRecord(); target.add(form, listContainer); target.appendJavaScript("labelsInit();"); } }); item.add(AttributeModifier.append("class", getRowClass(fv.getId(), form.getModelObject().getId()))); } }; add(listContainer.add(dataView).setOutputMarkupId(true)); PagedEntityListPanel navigator = new PagedEntityListPanel("navigator", dataView) { private static final long serialVersionUID = 1L; @Override protected void onEvent(AjaxRequestTarget target) { dataView.modelChanging(); target.add(listContainer); } }; DataViewContainer<StringLabel> container = new DataViewContainer<StringLabel>(listContainer, dataView, navigator); container.addLink(new OmOrderByBorder<StringLabel>("orderByName", "key", container)) .addLink(new OmOrderByBorder<StringLabel>("orderByValue", "value", container)); add(container.getLinks()); add(navigator); langForm = new LangForm("langForm", listContainer, this); fileUploadField = new FileUploadField("fileInput"); langForm.add(fileUploadField); langForm.add(new UploadProgressBar("progress", langForm, fileUploadField)); fileUploadField.add(new AjaxFormSubmitBehavior(langForm, "change") { private static final long serialVersionUID = 1L; @Override protected void onSubmit(AjaxRequestTarget target) { FileUpload download = fileUploadField.getFileUpload(); try { if (download == null || download.getInputStream() == null) { feedback.error("File is empty"); return; } LabelDao.upload(language.getValue(), download.getInputStream()); } catch (Exception e) { log.error("Exception on panel language editor import ", e); feedback.error(e); } // repaint the feedback panel so that it is hidden target.add(listContainer, feedback); } }); // Add a component to download a file without page refresh final AjaxDownload download = new AjaxDownload(); langForm.add(download); langForm.add(new AjaxButton("export") { private static final long serialVersionUID = 1L; @Override protected void onSubmit(AjaxRequestTarget target, Form<?> form) { final String name = LabelDao.getLabelFileName(language.getValue()); download.setFileName(name); download.setResourceStream(new AbstractResourceStream() { private static final long serialVersionUID = 1L; private transient InputStream is; @Override public InputStream getInputStream() throws ResourceStreamNotFoundException { try { is = Application.class.getResourceAsStream(name); return is; } catch (Exception e) { throw new ResourceStreamNotFoundException(e); } } @Override public void close() throws IOException { if (is != null) { is.close(); is = null; } } }); download.initiate(target); // repaint the feedback panel so that it is hidden target.add(feedback); } @Override protected void onError(AjaxRequestTarget target, Form<?> form) { // repaint the feedback panel so errors are shown target.add(feedback); } }); add(langForm); final AddLanguageDialog addLang = new AddLanguageDialog("addLang", this); add(addLang, new AjaxLink<Void>("addLangBtn") { private static final long serialVersionUID = 1L; @Override public void onClick(AjaxRequestTarget target) { addLang.open(target); } }); add(BootstrapFileUploadBehavior.INSTANCE); } @Override protected void onInitialize() { super.onInitialize(); add(new ConfirmableAjaxBorder("deleteLangBtn", getString("80"), getString("833")) { private static final long serialVersionUID = 1L; @Override protected void onSubmit(AjaxRequestTarget target, Form<?> form) { LabelDao.delete(language.getValue()); List<Map.Entry<Long, Locale>> langs = LangForm.getLanguages(); language = langs.isEmpty() ? null : langs.get(0); langForm.updateLanguages(target); target.add(listContainer); } }); } public LangForm getLangForm() { return langForm; } }