Java tutorial
/** * Copyright 2012 Universitat Pompeu Fabra. * * Licensed 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.onexus.website.api.pages.search; import org.apache.commons.lang3.StringUtils; import org.apache.wicket.AttributeModifier; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.IAjaxIndicatorAware; import org.apache.wicket.ajax.form.AjaxFormChoiceComponentUpdatingBehavior; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.ajax.markup.html.form.AjaxButton; import org.apache.wicket.extensions.ajax.markup.html.autocomplete.AutoCompleteBehavior; import org.apache.wicket.extensions.ajax.markup.html.autocomplete.AutoCompleteSettings; import org.apache.wicket.extensions.ajax.markup.html.autocomplete.IAutoCompleteRenderer; 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.IChoiceRenderer; import org.apache.wicket.markup.html.form.RadioChoice; import org.apache.wicket.markup.html.form.TextField; import org.apache.wicket.markup.html.image.Image; import org.apache.wicket.markup.html.list.ListItem; import org.apache.wicket.markup.html.list.ListView; import org.apache.wicket.markup.html.panel.EmptyPanel; import org.apache.wicket.model.AbstractReadOnlyModel; import org.apache.wicket.model.IModel; import org.apache.wicket.model.PropertyModel; import org.apache.wicket.request.Response; import org.apache.wicket.util.string.Strings; import org.onexus.collection.api.Collection; import org.onexus.collection.api.ICollectionManager; import org.onexus.collection.api.IEntity; import org.onexus.collection.api.query.Contains; import org.onexus.collection.api.query.OrderBy; import org.onexus.collection.api.query.Query; import org.onexus.collection.api.utils.EntityIterator; import org.onexus.collection.api.utils.QueryUtils; import org.onexus.resource.api.IResourceManager; import org.onexus.resource.api.ORI; import org.onexus.website.api.WebsiteApplication; import org.onexus.website.api.pages.Page; import org.onexus.website.api.pages.search.boxes.BoxesPanel; import org.onexus.website.api.utils.panels.ondomready.OnDomReadyPanel; import org.onexus.website.api.widgets.selection.FilterConfig; import org.onexus.website.api.widgets.selection.FiltersWidgetConfig; import org.onexus.website.api.widgets.selection.FiltersWidgetStatus; import javax.inject.Inject; import java.io.Serializable; import java.util.ArrayList; import java.util.Collections; import java.util.Iterator; import java.util.List; public class SearchPage extends Page<SearchPageConfig, SearchPageStatus> implements IAjaxIndicatorAware { @Inject private ICollectionManager collectionManager; @Inject private IResourceManager resourceManager; private transient FiltersWidgetStatus filtersStatus; private transient FilterConfig userFilter; private TextField<String> search; private WebMarkupContainer indicator; public SearchPage(String componentId, IModel<SearchPageStatus> statusModel) { this(componentId, statusModel, true, true); } public SearchPage(String componentId, IModel<SearchPageStatus> statusModel, boolean showTypes, boolean showLogo) { super(componentId, statusModel); IModel<SearchPageStatus> pageStatusModel = new PropertyModel<SearchPageStatus>(this, "status"); indicator = new WebMarkupContainer("indicator"); indicator.setOutputMarkupId(true); indicator.add(new Image("loading", OnDomReadyPanel.LOADING_IMAGE)); add(indicator); WebMarkupContainer container = new WebMarkupContainer("container"); container.add(new AttributeModifier("class", showLogo ? "show-logo" : "hide-logo")); Form form = new Form<SearchPageStatus>("form"); form.add(new AjaxButton("submit") { @Override protected void onSubmit(AjaxRequestTarget target, Form<?> form) { setFiltersStatus(null); userFilter = null; SearchPage.this.onSubmit(SearchPage.this.getStatus(), SearchPage.this.getConfig().getWebsiteConfig().getORI().getParent(), userFilter); target.add(SearchPage.this.get("boxes")); } @Override protected void onError(AjaxRequestTarget target, Form<?> form) { } }); form.setMultiPart(true); // By default use the first search type List<SearchType> types = getConfig().getTypes(); if (getStatus().getType() == null && !types.isEmpty()) { getStatus().setType(types.get(0)); } search = new TextField<String>("search", new PropertyModel<String>(pageStatusModel, "search")); search.setOutputMarkupId(true); if (!Strings.isEmpty(getStatus().getType().getPlaceholder())) { search.add(new AttributeModifier("placeholder", getStatus().getType().getPlaceholder())); } search.add(new AutoCompleteBehavior<IEntity>(new EntityRenderer(), new AutoCompleteSettings()) { @Override protected Iterator<IEntity> getChoices(String input) { return getAutocompleteChoices(input); } @Override protected String findIndicatorId() { return null; } }); form.add(search); // Filters list modal final WebMarkupContainer widgetModal = new WebMarkupContainer("widgetModal"); widgetModal.setOutputMarkupId(true); widgetModal.add(new Label("header", "")); widgetModal.add(new EmptyPanel("widget")); widgetModal.add(new AjaxLink<String>("close") { @Override public void onClick(AjaxRequestTarget target) { target.appendJavaScript("$('#" + widgetModal.getMarkupId() + "').modal('hide')"); } }); form.add(widgetModal); final AjaxLink<String> list = new AjaxLink<String>("list") { @Override public void onClick(AjaxRequestTarget target) { FiltersWidgetConfig filters = getStatus().getType().getFilters(); if (filters != null) { FiltersWidgetStatus status = filters.createEmptyStatus(); status.setConfig(filters); setFiltersStatus(status); widgetModal.addOrReplace(new Label("header", filters.getTitle())); widgetModal.addOrReplace(new SearchFiltersWidget("widget", new PropertyModel<FiltersWidgetStatus>(SearchPage.this, "filtersStatus")) { @Override protected void applyFilter(FilterConfig filterConfig, AjaxRequestTarget target) { filterConfig.setDeletable(true); search.setModelValue(new String[] { filterConfig.getName() }); target.add(search); userFilter = filterConfig; SearchPage.this.addOrReplace(internalBoxesPanel(filterConfig)); target.add(SearchPage.this.get("boxes")); target.appendJavaScript("$('#" + widgetModal.getMarkupId() + "').modal('hide')"); } }); target.add(widgetModal); target.appendJavaScript("$('#" + widgetModal.getMarkupId() + "').modal('show')"); } } }; list.setOutputMarkupPlaceholderTag(true); form.add(list); FiltersWidgetConfig filters = getStatus().getType().getFilters(); if (filters == null) { list.setVisible(false); } else { list.add(new AttributeModifier("rel", "tooltip")); list.add(new AttributeModifier("title", filters.getTitle())); list.setVisible(true); } setFiltersStatus(null); // Choose type RadioChoice<SearchType> typeSelect = new RadioChoice<SearchType>("type", new PropertyModel<SearchType>(pageStatusModel, "type"), types, new SearchTypeRenderer()); typeSelect.add(new AjaxFormChoiceComponentUpdatingBehavior() { @Override protected void onUpdate(AjaxRequestTarget target) { getStatus().setSearch(""); if (!Strings.isEmpty(getStatus().getType().getPlaceholder())) { search.add(new AttributeModifier("placeholder", getStatus().getType().getPlaceholder())); } else { search.add(new AttributeModifier("placeholder", "")); } SearchPage.this.addOrReplace(internalBoxesPanel()); target.add(search); target.add(SearchPage.this.get("container").get("form").get("examplesContainer")); target.add(SearchPage.this.get("boxes")); FiltersWidgetConfig filters = getStatus().getType().getFilters(); if (filters == null) { list.setVisible(false); } else { list.setVisible(true); list.add(new AttributeModifier("title", filters.getTitle())); } setFiltersStatus(null); target.add(list); } }); form.add(typeSelect); typeSelect.setVisible(showTypes); container.add(form); add(container); // Examples WebMarkupContainer examples = new WebMarkupContainer("examplesContainer"); examples.setOutputMarkupId(true); examples.add(new ListView<SearchExample>("examples", new ExamplesModel(new PropertyModel<SearchType>(pageStatusModel, "type"))) { @Override protected void populateItem(ListItem<SearchExample> item) { AjaxLink<SearchExample> link = new AjaxLink<SearchExample>("link", item.getModel()) { @Override public void onClick(AjaxRequestTarget target) { onSearch(target, getModelObject().getQuery()); } }; link.add(new Label("label", new PropertyModel<String>(item.getModel(), "label"))); item.add(link); WebMarkupContainer sep = new WebMarkupContainer("sep"); sep.setVisible(item.getIndex() + 1 != getModelObject().size()); item.add(sep); } }); form.add(examples); add(internalBoxesPanel()); } @Override public String getAjaxIndicatorMarkupId() { return indicator.getMarkupId(); } public FiltersWidgetStatus getFiltersStatus() { return filtersStatus; } public void setFiltersStatus(FiltersWidgetStatus filtersStatus) { this.filtersStatus = filtersStatus; } private BoxesPanel internalBoxesPanel(FilterConfig filter) { return newBoxesPanel(getStatus(), getConfig().getWebsiteConfig().getORI().getParent(), filter); } private BoxesPanel internalBoxesPanel() { return newBoxesPanel(getStatus(), getConfig().getWebsiteConfig().getORI().getParent(), null); } private BoxesPanel newBoxesPanel(SearchPageStatus status, ORI baseUri, FilterConfig filter) { return new BoxesPanel("boxes", status, baseUri, filter) { @Override protected void onDisambiguation(AjaxRequestTarget target, String query) { onSearch(target, query); } }; } protected void onSearch(AjaxRequestTarget target, String query) { getStatus().setSearch(query); addOrReplace(internalBoxesPanel()); target.add(search); target.add(SearchPage.this.get("boxes")); } protected void onSubmit(SearchPageStatus status, ORI baseUri, FilterConfig filter) { addOrReplace(newBoxesPanel(status, baseUri, filter)); } private Iterator<IEntity> getAutocompleteChoices(String in) { int lastComma = in.lastIndexOf(','); String input = lastComma > -1 ? in.substring(lastComma + 1).trim() : in.trim(); Query query = new Query(); SearchType type = getStatus().getType(); ORI collectionUri = getAbsoluteUri(type.getCollection()); String collectionAlias = QueryUtils.newCollectionAlias(query, collectionUri); query.setFrom(collectionAlias); List<String> fieldList = type.getFieldsList(); query.addSelect(collectionAlias, fieldList); for (String field : fieldList) { QueryUtils.or(query, new Contains(collectionAlias, field, input)); } query.addOrderBy(new OrderBy(collectionAlias, fieldList.get(0))); query.setCount(10); return new EntityIterator(collectionManager.load(query), collectionUri); } private ORI getAbsoluteUri(ORI partialUri) { ORI baseUri = SearchPage.this.getConfig().getWebsiteConfig().getORI().getParent(); return partialUri.toAbsolute(baseUri); } private IResourceManager getResourceManager() { if (resourceManager == null) { WebsiteApplication.inject(this); } return resourceManager; } private class SearchTypeRenderer implements IChoiceRenderer<SearchType> { @Override public Object getDisplayValue(SearchType type) { ORI collectionUri = type.getCollection(); Collection collection = getResourceManager().load(Collection.class, getAbsoluteUri(collectionUri)); if (collection == null) { return collectionUri; } String title = collection.getTitle(); return title == null ? collection.getName() : title; } @Override public String getIdValue(SearchType object, int index) { return Integer.toString(index); } } /** * Generic IEntity renderer that show all the fields. */ private class EntityRenderer implements IAutoCompleteRenderer<IEntity> { public final void render(final IEntity object, final Response response, final String criteria) { String textValue = getTextValue(object, criteria); if (textValue == null) { throw new IllegalStateException( "A call to textValue(Object) returned an illegal value: null for object: " + object.toString()); } textValue = textValue.replaceAll("\\\"", """); response.write("<li textvalue=\"" + textValue + "\""); response.write(">"); renderChoice(object, response, criteria); response.write("</li>"); } private String getTextValue(IEntity object, String in) { int lastComma = in.lastIndexOf(','); String criteria = lastComma > -1 ? in.substring(lastComma + 1).trim() : in.trim(); String previous = lastComma > -1 ? in.substring(0, lastComma) + ", " : ""; SearchType type = getStatus().getType(); List<String> fields = type.getKeysList(); for (String field : fields) { String value = String.valueOf(object.get(field)); if (StringUtils.containsIgnoreCase(value, criteria)) { return previous + value; } } return previous + object.get(fields.get(0)); } public final void renderHeader(final Response response) { response.write("<ul>"); } public final void renderFooter(final Response response, int count) { response.write("</ul>"); } protected void renderChoice(IEntity object, Response response, String criteria) { SearchType type = getStatus().getType(); List<String> keys = type.getKeysList(); List<String> fields = type.getFieldsList(); boolean keyFieldAdded = false; for (String field : fields) { String value = String.valueOf(object.get(field)); if (StringUtils.containsIgnoreCase(value, criteria)) { if (keys.contains(field)) { keyFieldAdded = true; } renderValue(response, value, criteria, field); } } if (!keyFieldAdded) { String field = keys.get(0); String value = String.valueOf(object.get(field)); renderValue(response, value, criteria, field); } } private void renderValue(Response response, String value, String criteria, String field) { String hlValue = value.replaceAll("(?i)(" + criteria + ")", "<strong>$1</strong>"); response.write("<span class='f'>" + field.toLowerCase() + ":</span>" + hlValue); response.write("<br />"); } } private final class ExamplesModel extends AbstractReadOnlyModel<List<SearchExample>> { private IModel<SearchType> model; private ExamplesModel(IModel<SearchType> model) { this.model = model; } @Override public List<SearchExample> getObject() { SearchType searchType = model.getObject(); if (searchType == null || searchType.getExamples() == null) { return Collections.EMPTY_LIST; } List<SearchExample> values = new ArrayList<SearchExample>(); for (String value : searchType.getExamples().split(",")) { String label = value.trim(); String query = label; if (label.contains("|")) { String[] split = label.split("\\|"); label = split[0].trim(); query = split[1].replace(';', ','); } values.add(new SearchExample(label, query)); } return values; } } private static class SearchExample implements Serializable { private String label; private String query; public SearchExample() { } public SearchExample(String label, String query) { this.label = label; this.query = query; } public String getLabel() { return label; } public void setLabel(String label) { this.label = label; } public String getQuery() { return query; } public void setQuery(String query) { this.query = query; } } }