| /* |
| * 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.myfaces.tobago.internal.renderkit.renderer; |
| |
| import org.apache.myfaces.tobago.internal.component.AbstractUIInput; |
| import org.apache.myfaces.tobago.internal.component.AbstractUISuggest; |
| import org.apache.myfaces.tobago.internal.util.JsonUtils; |
| import org.apache.myfaces.tobago.internal.util.SelectItemUtils; |
| import org.apache.myfaces.tobago.model.AutoSuggestItem; |
| import org.apache.myfaces.tobago.model.AutoSuggestItems; |
| import org.apache.myfaces.tobago.renderkit.RendererBase; |
| import org.apache.myfaces.tobago.renderkit.html.CustomAttributes; |
| import org.apache.myfaces.tobago.renderkit.html.HtmlAttributes; |
| import org.apache.myfaces.tobago.renderkit.html.HtmlElements; |
| import org.apache.myfaces.tobago.util.ComponentUtils; |
| import org.apache.myfaces.tobago.webapp.TobagoResponseWriter; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.el.MethodExpression; |
| import javax.faces.component.UIComponent; |
| import javax.faces.context.FacesContext; |
| import javax.faces.model.SelectItem; |
| import java.io.IOException; |
| import java.lang.invoke.MethodHandles; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class SuggestRenderer extends RendererBase { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| @Override |
| public void decode(final FacesContext facesContext, final UIComponent component) { |
| final AbstractUISuggest suggest = (AbstractUISuggest) component; |
| final String clientId = suggest.getClientId(facesContext); |
| final Map<String, String> requestParameterMap = facesContext.getExternalContext().getRequestParameterMap(); |
| if (requestParameterMap.containsKey(clientId)) { |
| final String query = requestParameterMap.get(clientId); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("suggest query='{}'", query); |
| } |
| // XXX this is for the old way: for "suggestMethod" |
| final AbstractUIInput input = ComponentUtils.findAncestor(suggest, AbstractUIInput.class); |
| if (input != null) { |
| input.setSubmittedValue(query); |
| } |
| // this is the new way: for select items |
| suggest.setQuery(query); |
| } |
| } |
| |
| @Override |
| public void encodeBegin(final FacesContext facesContext, final UIComponent component) throws IOException { |
| final AbstractUISuggest suggest = (AbstractUISuggest) component; |
| final AbstractUIInput input = ComponentUtils.findAncestor(suggest, AbstractUIInput.class); |
| final MethodExpression suggestMethodExpression = suggest.getSuggestMethodExpression(); |
| |
| int totalCount = suggest.getTotalCount(); |
| final String[] array; |
| |
| if (suggestMethodExpression != null && input != null) { // old way (deprecated) |
| final AutoSuggestItems autoSuggestItems |
| = createAutoSuggestItems(suggestMethodExpression.invoke(facesContext.getELContext(), new Object[]{input})); |
| final List<AutoSuggestItem> items = autoSuggestItems.getItems(); |
| |
| if (totalCount == -1 || items.size() < totalCount) { |
| totalCount = items.size(); |
| } |
| |
| array = new String[totalCount]; |
| for (int i = 0; i < totalCount; i++) { |
| array[i] = items.get(i).getLabel(); |
| } |
| } else { |
| final List<SelectItem> items = SelectItemUtils.getItemList(facesContext, suggest); |
| |
| if (totalCount == -1 || items.size() < totalCount) { |
| totalCount = items.size(); |
| } |
| |
| array = new String[totalCount]; |
| for (int i = 0; i < totalCount; i++) { |
| array[i] = items.get(i).getLabel(); |
| } |
| } |
| |
| final TobagoResponseWriter writer = getResponseWriter(facesContext); |
| |
| writer.startElement(HtmlElements.TOBAGO_SUGGEST); |
| final String clientId = suggest.getClientId(facesContext); |
| writer.writeIdAttribute(clientId); |
| if (input != null) { |
| writer.writeAttribute(HtmlAttributes.FOR, input.getFieldId(facesContext), false); |
| } else { |
| LOG.error("No ancestor with type AbstractUIInput found for suggest id={}", clientId); |
| } |
| |
| writer.writeAttribute(CustomAttributes.MIN_CHARS, suggest.getMinimumCharacters()); |
| writer.writeAttribute(CustomAttributes.DELAY, suggest.getDelay()); |
| writer.writeAttribute(CustomAttributes.MAX_ITEMS, suggest.getMaximumItems()); |
| writer.writeAttribute(CustomAttributes.UPDATE, suggest.isUpdate()); |
| writer.writeAttribute(CustomAttributes.TOTAL_COUNT, totalCount); |
| writer.writeAttribute(CustomAttributes.LOCAL_MENU, suggest.isLocalMenu()); |
| writer.writeAttribute(CustomAttributes.DATA, JsonUtils.encode(array), true); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("suggest list: {}", JsonUtils.encode(array)); |
| } |
| |
| writer.endElement(HtmlElements.TOBAGO_SUGGEST); |
| } |
| |
| private AutoSuggestItems createAutoSuggestItems(final Object object) { |
| if (object instanceof AutoSuggestItems) { |
| return (AutoSuggestItems) object; |
| } |
| final AutoSuggestItems autoSuggestItems = new AutoSuggestItems(); |
| if (object instanceof List && !((List) object).isEmpty()) { |
| if (((List) object).get(0) instanceof AutoSuggestItem) { |
| //noinspection unchecked |
| autoSuggestItems.setItems((List<AutoSuggestItem>) object); |
| } else if (((List) object).get(0) instanceof String) { |
| final List<AutoSuggestItem> items = new ArrayList<>(((List) object).size()); |
| for (int i = 0; i < ((List) object).size(); i++) { |
| final AutoSuggestItem item = new AutoSuggestItem(); |
| item.setLabel((String) ((List) object).get(i)); |
| item.setValue((String) ((List) object).get(i)); |
| items.add(item); |
| } |
| autoSuggestItems.setItems(items); |
| } else { |
| throw new ClassCastException("Can't create AutoSuggestItems from '" + object + "'. " |
| + "Elements needs to be " + String.class.getName() + " or " + AutoSuggestItem.class.getName()); |
| } |
| } else { |
| autoSuggestItems.setItems(Collections.emptyList()); |
| } |
| return autoSuggestItems; |
| } |
| |
| } |