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package eu.etaxonomy.vaadin.ui.navigation;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Stack;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.log4j.Logger;
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import org.springframework.beans.factory.DisposableBean;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.Lazy;
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import org.vaadin.spring.events.EventBus;
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import org.vaadin.spring.events.annotation.EventBusListenerMethod;
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import com.vaadin.navigator.ViewChangeListener;
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import com.vaadin.navigator.ViewDisplay;
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import com.vaadin.spring.annotation.SpringView;
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import com.vaadin.spring.annotation.UIScope;
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import com.vaadin.spring.navigator.SpringNavigator;
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import com.vaadin.spring.navigator.SpringViewProvider;
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import com.vaadin.ui.Field;
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import com.vaadin.ui.UI;
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import com.vaadin.ui.Window;
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import eu.etaxonomy.cdm.vaadin.event.EditorActionContext;
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import eu.etaxonomy.vaadin.mvp.AbstractEditorPresenter;
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import eu.etaxonomy.vaadin.mvp.AbstractPopupEditor;
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import eu.etaxonomy.vaadin.mvp.ApplicationView;
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import eu.etaxonomy.vaadin.ui.UIInitializedEvent;
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import eu.etaxonomy.vaadin.ui.view.DoneWithPopupEvent;
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import eu.etaxonomy.vaadin.ui.view.PopEditorOpenedEvent;
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import eu.etaxonomy.vaadin.ui.view.PopupView;
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@UIScope
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public class NavigationManagerBean extends SpringNavigator implements NavigationManager, DisposableBean {
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private static final long serialVersionUID = 6599898650948333853L;
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private final static Logger logger = Logger.getLogger(NavigationManagerBean.class);
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// injecting the viewDisplay as spring bean causes problems with older cdm vaadin code
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// SingleComponentContainerViewDisplay for example can't be used
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// the viewDisplay should be configurable per UI therefore it seems more elegant to
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// let the UI pass the viewDisplay to the Navigator
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// @Autowired
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private ViewDisplay viewDisplay;
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@Autowired
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private SpringViewProvider viewProvider;
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@Autowired
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private List<ViewChangeListener> viewChangeListeners;
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@Autowired
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protected ApplicationContext applicationContext;
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protected EventBus.UIEventBus uiEventBus;
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@Autowired
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protected void setViewEventBus(EventBus.UIEventBus uiEventBus){
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this.uiEventBus = uiEventBus;
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uiEventBus.subscribe(this);
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}
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// /**
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// * This reference will cause the scoped PermissionDebugUtils being initialized.
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// * It is not used in this class but attaches itself to the vaadin session
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// * from where it will be accessible via VaadinUserHelper.fromSession()
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// *
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// * <b>NOTE:</b> PermissionDebugUtils is only available if the spring profile "debug" is active,
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// * See
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// */
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// @Autowired(required=false)
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// private PermissionDebugUtils permissionDebugUtils;
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private PopupViewRegistration popupViewRegistration;
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private String defaultViewName = null;
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/*
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* Why UriFragmentManager must be initialized lazily:
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*
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* when the SpringVaadinServlet usually is being instantiated the ServletUIInitHandler(UIInitHandler).getBrowserDetailsUI(VaadinRequest, VaadinSession) method is called which will
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* first cause the WebapplicationContext being created. Once this is done the initialization of the UI classes is completed. This means that the UI classes are not readily available
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* via Page.getCurrent() which is used in the UriFragmentManager constructor. The NavigationManagerBean is initialized with the WebapplicationContext, that is when the current ui is
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* not yet available, therefore the UriFragmentManager must be initialized lazily.
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*/
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@Autowired
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@Lazy
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private UriFragmentManager uriFragmentManager;
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// public void setUriFragmentManager(UriFragmentManager uriFragmentManager) {
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// this.uriFragmentManager = uriFragmentManager;
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// }
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public NavigationManagerBean() {
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popupViewRegistration = new PopupViewRegistration();
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}
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// private Collection<PopupView> popupViews = new HashSet<>();
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// @Lazy
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// @Autowired(required=false)
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// private void popUpViews(Collection<PopupView> popupViews){
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// this.popupViews = popupViews;
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// // popupViews.forEach(view -> this.popupViews.put(view.getClass(), view));
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// }
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private <P extends PopupView> P findPopupView(Class<P> type){
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P viewBean = applicationContext.getBean(type);
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if(viewBean == null){
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throw new NullPointerException("no popup-view bean of type " + type.getName() + " found");
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}
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return viewBean;
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// return popupViews.stream().filter(p -> p.getClass().equals(type)).findFirst();
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}
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@EventBusListenerMethod
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protected void onUIInitialized(UIInitializedEvent e) {
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init(UI.getCurrent(), uriFragmentManager, viewDisplay);
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addProvider(viewProvider);
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viewChangeListeners.forEach(vcl -> addViewChangeListener(vcl));
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}
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public void navigateTo(String navigationState, boolean fireNavigationEvent) {
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if(StringUtils.isEmpty(navigationState)){
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navigationState = defaultViewName;
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}
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if (fireNavigationEvent) {
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navigateTo(navigationState);
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} else {
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super.navigateTo(navigationState);
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}
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}
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@Override
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public void navigateTo(String navigationState) {
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if(StringUtils.isEmpty(navigationState)){
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navigationState = defaultViewName;
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}
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super.navigateTo(navigationState);
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//eventBus.publishEvent(new NavigationEvent(navigationState));
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}
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@EventBusListenerMethod
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protected void onNavigationEvent(NavigationEvent e) {
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navigateTo(e.getViewName(), false);
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}
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@Override
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public <T extends PopupView> T showInPopup(Class<T> popupType, ApplicationView parentView, Field<?> targetField) {
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PopupView popupView = findPopupView(popupType);
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if(AbstractPopupEditor.class.isAssignableFrom(popupView.getClass())){
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if(parentView instanceof AbstractPopupEditor){
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// retain the chain of EditorActionContexts when starting a new pupupEditor
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Stack<EditorActionContext> parentEditorActionContext = ((AbstractPopupEditor)parentView).getEditorActionContext();
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((AbstractPopupEditor)popupView).setParentEditorActionContext(parentEditorActionContext, targetField);
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}
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}
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Window window = new Window();
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window.setCaption(popupView.getWindowCaption());
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window.center();
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window.setResizable(popupView.isResizable());
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// due to issue #6673 (https://dev.e-taxonomy.eu/redmine/issues/6673) popup editors must be modal!
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//window.setModal(popupView.isModal());
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window.setModal(true);
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window.setCaptionAsHtml(popupView.isWindowCaptionAsHtml());
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window.setWidth(popupView.getWindowWidth(), popupView.getWindowWidthUnit());
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window.setHeight(popupView.getWindowHeight(), popupView.getWindowHeightUnit());
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window.setContent(popupView.asComponent());
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// TODO need to disallow pressing the close [x] button:
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// since window.addCloseListener(e -> popupView.cancel()); will
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// cause sending cancel events even if save has been clicked
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window.setClosable(popupView.isClosable());
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UI.getCurrent().addWindow(window);
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popupView.viewEntered();
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popupView.focusFirst();
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uiEventBus.publish(this, new PopEditorOpenedEvent(this, popupView));
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popupViewRegistration.put(window, parentView, popupView, targetField);
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return (T) popupView;
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}
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@Override
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public Field<?> targetFieldOf(PopupView popupView){
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return popupViewRegistration.get(popupView);
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}
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@EventBusListenerMethod
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protected void onDoneWithTheEditor(DoneWithPopupEvent event) {
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PopupView popup = event.getPopup();
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if(DisposableBean.class.isAssignableFrom(popup.getClass())){
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try {
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((DisposableBean)popup).destroy();
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} catch (Exception e) {
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logger.error(e);
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}
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}
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Window window = popupViewRegistration.getWindow(popup);
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if (window != null) {
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window.close();
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popupViewRegistration.remove(popup);
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}
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if(AbstractPopupEditor.class.isAssignableFrom(popup.getClass())){
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((AbstractPopupEditor)popup).presenter().unsubscribeFromEventBuses();
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void reloadCurrentView() {
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if(logger.isTraceEnabled()){
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logger.trace("reloading " + getState());
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}
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navigateTo(getState(), false);
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}
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/**
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* This method requires that the {@SpringView} annotation is used to set the name of the <code>View</code>.
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*
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* @return the current view name or <code>null</code>
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*/
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@Override
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public String getCurrentViewName() {
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if(getCurrentView() != null){
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SpringView springViewAnnotation = getCurrentView().getClass().getAnnotation(SpringView.class);
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if(springViewAnnotation != null){
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return springViewAnnotation.name();
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}
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}
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return null;
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}
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@Override
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public List<String> getCurrentViewParameters(){
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String substate = getState();
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String currentViewName = getCurrentViewName();
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if(currentViewName != null){
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substate = substate.replaceAll("^" + currentViewName + "/?", "");
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}
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return Arrays.asList(substate.split("/"));
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public List<AbstractEditorPresenter<?, ?>> getPopupEditorPresenters() {
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// TODO Auto-generated method stub
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return null;
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}
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/**
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* @return the defaultViewName
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*/
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public String getDefaultViewName() {
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return defaultViewName;
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}
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/**
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* @param defaultViewName the defaultViewName to set
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*/
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public void setDefaultViewName(String defaultViewName) {
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this.defaultViewName = defaultViewName;
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}
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public void setViewDisplay(ViewDisplay viewDisplay){
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this.viewDisplay = viewDisplay;
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}
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/**
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* implementation of the interface {@link DisposableBean} and overrides the
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* method in {@link Navigator} which is not an implementation of {@link DisposableBean}
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* in this class.
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*/
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@Override
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public void destroy() {
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super.destroy();
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uiEventBus.unsubscribe(this);
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popupViewRegistration = null;
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// release the reference to the view kept in currentView
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// which could be expensive
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// by navigating to the default view
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navigateTo(defaultViewName);
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}
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}
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