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package org.tela_botanica.del.client.composants.presenteur;import com.google.gwt.event.dom.client.ClickEvent;import com.google.gwt.event.dom.client.ClickHandler;import com.google.gwt.user.client.ui.Button;import com.google.gwt.user.client.ui.HasWidgets;import com.google.gwt.user.client.ui.Panel;import com.google.gwt.user.client.ui.RootPanel;public abstract class Presenteur {private Panel overlay;private Panel overlayContenu;private PresenteurVue presenteurVue;private boolean fenetreModaleOuverte = false;// Constructeurpublic Presenteur() {}// Afficheurpublic void go() {go(null);}public abstract void go(HasWidgets composite);// Gestion des évènementsprotected abstract void gererEvenements();public void ouvrirFenetreModale(Presenteur presenteurModal) {presenteurVue = new PresenteurVue();overlay = presenteurVue.overlay;overlay.setStyleName("overlay");overlay.setVisible(false);RootPanel.get().add(overlay);overlayContenu = presenteurVue.overlayContenu;overlayContenu.setStyleName("overlayContenu");Button boutonFermer = presenteurVue.boutonFermer;boutonFermer.setStyleName("fermerOverlay");boutonFermer.addClickHandler(new ClickHandler() {public void onClick(ClickEvent event) {fermerFenetreModale();}});presenteurModal.go(overlayContenu);RootPanel.get().add(overlayContenu);overlayContenu.setVisible(true);overlayContenu.add(boutonFermer);overlay.setVisible(true);fenetreModaleOuverte = true;}public boolean fenetreModaleEstOuverte() {return fenetreModaleOuverte;}public void fermerFenetreModale() {overlay.clear();overlayContenu.clear();RootPanel.get().remove(overlay);RootPanel.get().remove(overlayContenu);fenetreModaleOuverte = false;}}