Java tutorial
/** * Copyright (c) 2000-present Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library 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 Lesser General Public License for more * details. */ package com.liferay.item.selector.web.internal; import com.liferay.item.selector.ItemSelector; import com.liferay.item.selector.ItemSelectorCriterion; import com.liferay.item.selector.ItemSelectorCriterionHandler; import com.liferay.item.selector.ItemSelectorCriterionSerializer; import com.liferay.item.selector.ItemSelectorRendering; import com.liferay.item.selector.ItemSelectorReturnType; import com.liferay.item.selector.ItemSelectorView; import com.liferay.item.selector.ItemSelectorViewRenderer; import com.liferay.item.selector.constants.ItemSelectorPortletKeys; import com.liferay.petra.string.StringPool; import com.liferay.portal.kernel.exception.SystemException; import com.liferay.portal.kernel.model.Group; import com.liferay.portal.kernel.portlet.LiferayWindowState; import com.liferay.portal.kernel.portlet.RequestBackedPortletURLFactory; import com.liferay.portal.kernel.theme.ThemeDisplay; import com.liferay.portal.kernel.util.ArrayUtil; import com.liferay.portal.kernel.util.Http; import com.liferay.portal.kernel.util.Portal; import com.liferay.portal.kernel.util.StringBundler; import com.liferay.portal.kernel.util.StringUtil; import com.liferay.portal.kernel.util.Validator; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import javax.portlet.PortletMode; import javax.portlet.PortletModeException; import javax.portlet.PortletURL; import javax.portlet.WindowStateException; import org.osgi.service.component.annotations.Component; import org.osgi.service.component.annotations.Reference; import org.osgi.service.component.annotations.ReferenceCardinality; import org.osgi.service.component.annotations.ReferencePolicy; /** * @author Ivn Zaera * @author Roberto Daz */ @Component(service = ItemSelector.class) public class ItemSelectorImpl implements ItemSelector { public static final String JSON = "_json"; public static final String PARAMETER_CRITERIA = "criteria"; public static final String PARAMETER_ITEM_SELECTED_EVENT_NAME = "itemSelectedEventName"; public static final String PARAMETER_SELECTED_TAB = "selectedTab"; @Override public String getItemSelectedEventName(String itemSelectorURL) { String namespace = _portal.getPortletNamespace(ItemSelectorPortletKeys.ITEM_SELECTOR); return _http.getParameter(itemSelectorURL, namespace.concat(PARAMETER_ITEM_SELECTED_EVENT_NAME), false); } @Override public List<ItemSelectorCriterion> getItemSelectorCriteria(Map<String, String[]> parameters) { List<Class<? extends ItemSelectorCriterion>> itemSelectorCriterionClasses = getItemSelectorCriterionClasses( parameters); List<ItemSelectorCriterion> itemSelectorCriteria = new ArrayList<>(itemSelectorCriterionClasses.size()); for (int i = 0; i < itemSelectorCriterionClasses.size(); i++) { Class<? extends ItemSelectorCriterion> itemSelectorCriterionClass = itemSelectorCriterionClasses.get(i); String json = parameters.get(String.valueOf(i).concat(JSON))[0]; itemSelectorCriteria .add(_itemSelectionCriterionSerializer.deserialize(itemSelectorCriterionClass, json)); } return itemSelectorCriteria; } @Override public List<ItemSelectorCriterion> getItemSelectorCriteria(String itemSelectorURL) { Map<String, String[]> parameters = _http.getParameterMap(itemSelectorURL); Map<String, String[]> itemSelectorURLParameterMap = new HashMap<>(); String namespace = _portal.getPortletNamespace(ItemSelectorPortletKeys.ITEM_SELECTOR); for (Map.Entry<String, String[]> entry : parameters.entrySet()) { String parameterName = entry.getKey(); if (parameterName.contains(namespace)) { String key = StringUtil.removeSubstring(parameterName, namespace); itemSelectorURLParameterMap.put(key, entry.getValue()); } } return getItemSelectorCriteria(itemSelectorURLParameterMap); } @Override public ItemSelectorRendering getItemSelectorRendering( RequestBackedPortletURLFactory requestBackedPortletURLFactory, Map<String, String[]> parameters, ThemeDisplay themeDisplay) { String itemSelectedEventName = getValue(parameters, PARAMETER_ITEM_SELECTED_EVENT_NAME); String selectedTab = getValue(parameters, PARAMETER_SELECTED_TAB); List<ItemSelectorViewRenderer> itemSelectorViewRenderers = new ArrayList<>(); List<ItemSelectorCriterion> itemSelectorCriteria = getItemSelectorCriteria(parameters); ItemSelectorCriterion[] itemSelectorCriteriaArray = itemSelectorCriteria .toArray(new ItemSelectorCriterion[itemSelectorCriteria.size()]); for (ItemSelectorCriterion itemSelectorCriterion : itemSelectorCriteria) { Class<? extends ItemSelectorCriterion> itemSelectorCriterionClass = itemSelectorCriterion.getClass(); ItemSelectorCriterionHandler<ItemSelectorCriterion> itemSelectorCriterionHandler = _itemSelectionCriterionHandlers .get(itemSelectorCriterionClass.getName()); List<ItemSelectorView<ItemSelectorCriterion>> itemSelectorViews = itemSelectorCriterionHandler .getItemSelectorViews(itemSelectorCriterion); for (ItemSelectorView<ItemSelectorCriterion> itemSelectorView : itemSelectorViews) { if (!itemSelectorView.isVisible(themeDisplay)) { continue; } PortletURL portletURL = getPortletURL(requestBackedPortletURLFactory, itemSelectorView.getTitle(themeDisplay.getLocale()), selectedTab, itemSelectedEventName, itemSelectorCriteriaArray, themeDisplay); itemSelectorViewRenderers.add(new ItemSelectorViewRendererImpl(itemSelectorView, itemSelectorCriterion, portletURL, itemSelectedEventName, isSearch(parameters))); } } return new ItemSelectorRenderingImpl(itemSelectedEventName, selectedTab, itemSelectorViewRenderers); } @Override public PortletURL getItemSelectorURL(RequestBackedPortletURLFactory requestBackedPortletURLFactory, Group group, long refererGroupId, String itemSelectedEventName, ItemSelectorCriterion... itemSelectorCriteria) { PortletURL portletURL = requestBackedPortletURLFactory .createControlPanelRenderURL(ItemSelectorPortletKeys.ITEM_SELECTOR, group, refererGroupId, 0); try { portletURL.setPortletMode(PortletMode.VIEW); } catch (PortletModeException pme) { throw new SystemException(pme); } try { portletURL.setWindowState(LiferayWindowState.POP_UP); } catch (WindowStateException wse) { throw new SystemException(wse); } Map<String, String[]> parameters = getItemSelectorParameters(itemSelectedEventName, itemSelectorCriteria); for (Map.Entry<String, String[]> entry : parameters.entrySet()) { portletURL.setParameter(entry.getKey(), entry.getValue()); } return portletURL; } @Override public PortletURL getItemSelectorURL(RequestBackedPortletURLFactory requestBackedPortletURLFactory, String itemSelectedEventName, ItemSelectorCriterion... itemSelectorCriteria) { return getItemSelectorURL(requestBackedPortletURLFactory, null, 0, itemSelectedEventName, itemSelectorCriteria); } protected List<Class<? extends ItemSelectorCriterion>> getItemSelectorCriterionClasses( Map<String, String[]> parameters) { String criteria = getValue(parameters, PARAMETER_CRITERIA); String[] itemSelectorCriterionClassNames = criteria.split(","); List<Class<? extends ItemSelectorCriterion>> itemSelectorCriterionClasses = new ArrayList<>( itemSelectorCriterionClassNames.length); for (String itemSelectorCriterionClassName : itemSelectorCriterionClassNames) { ItemSelectorCriterionHandler<?> itemSelectorCriterionHandler = _itemSelectionCriterionHandlers .get(itemSelectorCriterionClassName); if (itemSelectorCriterionHandler != null) { itemSelectorCriterionClasses.add(itemSelectorCriterionHandler.getItemSelectorCriterionClass()); } } return itemSelectorCriterionClasses; } protected Map<String, String[]> getItemSelectorParameters(String itemSelectedEventName, ItemSelectorCriterion... itemSelectorCriteria) { Map<String, String[]> parameters = new HashMap<>(); parameters.put(PARAMETER_ITEM_SELECTED_EVENT_NAME, new String[] { itemSelectedEventName }); StringBundler sb = new StringBundler(itemSelectorCriteria.length * 2); for (ItemSelectorCriterion itemSelectorCriterion : itemSelectorCriteria) { Class<?> clazz = itemSelectorCriterion.getClass(); sb.append(clazz.getName()); sb.append(StringPool.COMMA); } if (itemSelectorCriteria.length > 0) { sb.setIndex(sb.index() - 1); } parameters.put(PARAMETER_CRITERIA, new String[] { sb.toString() }); for (int i = 0; i < itemSelectorCriteria.length; i++) { ItemSelectorCriterion itemSelectorCriterion = itemSelectorCriteria[i]; parameters.put(String.valueOf(i).concat(JSON), new String[] { _itemSelectionCriterionSerializer.serialize(itemSelectorCriterion) }); } return parameters; } protected PortletURL getPortletURL(RequestBackedPortletURLFactory requestBackedPortletURLFactory, String title, String selectedTab, String itemSelectedEventName, ItemSelectorCriterion[] itemSelectorCriteriaArray, ThemeDisplay themeDisplay) { PortletURL portletURL = null; if (Validator.isNotNull(selectedTab) && selectedTab.equals(title)) { portletURL = getItemSelectorURL(requestBackedPortletURLFactory, themeDisplay.getScopeGroup(), themeDisplay.getRefererGroupId(), itemSelectedEventName, itemSelectorCriteriaArray); } else { Group group = themeDisplay.getRefererGroup(); if (group == null) { group = themeDisplay.getScopeGroup(); } portletURL = getItemSelectorURL(requestBackedPortletURLFactory, group, 0, itemSelectedEventName, itemSelectorCriteriaArray); } portletURL.setParameter(PARAMETER_SELECTED_TAB, title); return portletURL; } protected String getValue(Map<String, String[]> parameters, String name) { String[] values = parameters.get(name); if (ArrayUtil.isEmpty(values)) { return StringPool.BLANK; } return values[0]; } protected boolean isSearch(Map<String, String[]> parameters) { String keywords = getValue(parameters, "keywords"); if (Validator.isNotNull(keywords)) { return true; } return false; } @Reference(cardinality = ReferenceCardinality.MULTIPLE, policy = ReferencePolicy.DYNAMIC) @SuppressWarnings("rawtypes") protected <T extends ItemSelectorCriterion, S extends ItemSelectorReturnType> void setItemSelectionCriterionHandler( ItemSelectorCriterionHandler<T> itemSelectionCriterionHandler) { Class<T> itemSelectorCriterionClass = itemSelectionCriterionHandler.getItemSelectorCriterionClass(); _itemSelectionCriterionHandlers.put(itemSelectorCriterionClass.getName(), (ItemSelectorCriterionHandler) itemSelectionCriterionHandler); } @Reference(unbind = "-") protected void setItemSelectorCriterionSerializer( ItemSelectorCriterionSerializer itemSelectorCriterionSerializer) { _itemSelectionCriterionSerializer = itemSelectorCriterionSerializer; } protected <T extends ItemSelectorCriterion, S extends ItemSelectorReturnType> void unsetItemSelectionCriterionHandler( ItemSelectorCriterionHandler<T> itemSelectionCriterionHandler) { Class<T> itemSelectorCriterionClass = itemSelectionCriterionHandler.getItemSelectorCriterionClass(); _itemSelectionCriterionHandlers.remove(itemSelectorCriterionClass.getName()); } @Reference private Http _http; private final ConcurrentMap<String, ItemSelectorCriterionHandler<ItemSelectorCriterion>> _itemSelectionCriterionHandlers = new ConcurrentHashMap<>(); private ItemSelectorCriterionSerializer _itemSelectionCriterionSerializer; @Reference private Portal _portal; }