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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.HashMap;
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import java.util.List;
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import java.util.Map;
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import org.apache.log4j.Logger;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.ApplicationEventPublisher;
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import org.springframework.context.annotation.Lazy;
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import org.springframework.context.event.EventListener;
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import org.springframework.context.event.PojoEventListenerManager;
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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.server.Sizeable.Unit;
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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.UI;
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import com.vaadin.ui.Window;
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import eu.etaxonomy.cdm.vaadin.security.UserHelper;
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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.ui.UIInitializedEvent;
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import eu.etaxonomy.vaadin.ui.view.DoneWithPopupEvent;
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import eu.etaxonomy.vaadin.ui.view.PopupEditorFactory;
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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 {
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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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@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 ViewChangeListener viewChangeListener;
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@Autowired
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private PojoEventListenerManager eventListenerManager;
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@Autowired
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private PopupEditorFactory popupEditorFactory;
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@Autowired
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private UserHelper userHelper;
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private Map<PopupView, Window> popupMap;
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public NavigationManagerBean() {
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popupMap = new HashMap<>();
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}
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private <P extends PopupView> PopupView findPopupView(Class<P> popupViewClass){
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return popupEditorFactory.newPopupView(popupViewClass);
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}
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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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@Autowired
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ApplicationEventPublisher eventBus;
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@EventListener
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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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addViewChangeListener(viewChangeListener);
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}
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public void navigateTo(String navigationState, boolean fireNavigationEvent) {
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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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super.navigateTo(navigationState);
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eventBus.publishEvent(new NavigationEvent(navigationState));
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}
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@EventListener
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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) {
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PopupView popupView = findPopupView(popupType); // TODO make better use of Optional
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if(AbstractPopupEditor.class.isAssignableFrom(popupView.getClass())){
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AbstractEditorPresenter presenter = ((AbstractPopupEditor)popupView).presenter();
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eventListenerManager.addEventListeners(presenter);
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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.getWindowPixelWidth(), Unit.PIXELS);
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window.setContent(popupView.asComponent());
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// window.addCloseListener(e -> popupView.cancel());
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UI.getCurrent().addWindow(window);
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popupView.viewEntered();
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popupView.focusFirst();
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popupMap.put(popupView, window);
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return (T) popupView;
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}
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@EventListener
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protected void onDoneWithTheEditor(DoneWithPopupEvent e) {
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PopupView popup = e.getPopup();
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Window window = popupMap.get(popup);
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if (window != null) {
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window.close();
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popupMap.remove(popup);
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}
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if(AbstractPopupEditor.class.isAssignableFrom(popup.getClass())){
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AbstractEditorPresenter presenter = ((AbstractPopupEditor)popup).presenter();
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eventListenerManager.removeEventListeners(presenter);
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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 ser 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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public String getCurrentViewName() {
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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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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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