From 5044fd730feba048c6b6647222881f7b3eeb8a33 Mon Sep 17 00:00:00 2001
From: Mathieu Baudier <mbaudier@argeo.org>
Date: Mon, 14 May 2018 13:11:05 +0200
Subject: [PATCH] Browser navigation support

---
 .../argeo/cms/e4/rap/AbstractRapE4App.java    |  7 +-
 .../argeo/cms/e4/rap/CmsLoginLifecycle.java   | 67 +++++++++++++++++--
 2 files changed, 65 insertions(+), 9 deletions(-)

diff --git a/org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/AbstractRapE4App.java b/org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/AbstractRapE4App.java
index f79864a54..9d1f782e6 100644
--- a/org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/AbstractRapE4App.java
+++ b/org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/AbstractRapE4App.java
@@ -23,6 +23,7 @@ public abstract class AbstractRapE4App implements ApplicationConfiguration {
 	private String pageTitle;
 	private String e4Xmi;
 	private String path;
+	private String lifeCycleUri = "bundleclass://org.argeo.cms.e4.rap/org.argeo.cms.e4.rap.CmsLoginLifecycle";
 
 	public void configure(Application application) {
 		application.setExceptionHandler(new ExceptionHandler() {
@@ -35,8 +36,6 @@ public abstract class AbstractRapE4App implements ApplicationConfiguration {
 			}
 		});
 
-		String lifeCycleUri = "bundleclass://org.argeo.cms.e4.rap/org.argeo.cms.e4.rap.CmsLoginLifecycle";
-
 		Map<String, String> properties = new HashMap<String, String>();
 		properties.put(WebClient.PAGE_TITLE, pageTitle);
 		E4ApplicationConfig config = new E4ApplicationConfig(e4Xmi, lifeCycleUri, null, false, true, true);
@@ -90,4 +89,8 @@ public abstract class AbstractRapE4App implements ApplicationConfiguration {
 		this.path = path;
 	}
 
+	public void setLifeCycleUri(String lifeCycleUri) {
+		this.lifeCycleUri = lifeCycleUri;
+	}
+
 }
diff --git a/org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/CmsLoginLifecycle.java b/org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/CmsLoginLifecycle.java
index 615a98117..78c4747f6 100644
--- a/org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/CmsLoginLifecycle.java
+++ b/org.argeo.cms.e4.rap/src/org/argeo/cms/e4/rap/CmsLoginLifecycle.java
@@ -13,21 +13,49 @@ import org.argeo.cms.auth.CurrentUser;
 import org.argeo.cms.ui.CmsImageManager;
 import org.argeo.cms.ui.CmsView;
 import org.argeo.cms.ui.UxContext;
+import org.argeo.cms.ui.dialogs.CmsFeedback;
 import org.argeo.cms.util.SimpleUxContext;
 import org.argeo.cms.widgets.auth.CmsLoginShell;
 import org.argeo.node.NodeConstants;
+import org.eclipse.e4.core.services.events.IEventBroker;
+import org.eclipse.e4.ui.workbench.UIEvents;
 import org.eclipse.e4.ui.workbench.lifecycle.PostContextCreate;
 import org.eclipse.e4.ui.workbench.lifecycle.PreSave;
+import org.eclipse.rap.rwt.RWT;
+import org.eclipse.rap.rwt.client.service.BrowserNavigation;
+import org.eclipse.rap.rwt.client.service.BrowserNavigationEvent;
+import org.eclipse.rap.rwt.client.service.BrowserNavigationListener;
 import org.eclipse.swt.widgets.Display;
+import org.osgi.service.event.Event;
+import org.osgi.service.event.EventHandler;
 
 @SuppressWarnings("restriction")
 public class CmsLoginLifecycle implements CmsView {
 	private final static Log log = LogFactory.getLog(CmsLoginLifecycle.class);
+
 	private UxContext uxContext;
+
 	private LoginContext loginContext;
+	private BrowserNavigation browserNavigation;
+
+	private String state = null;
 
 	@PostContextCreate
-	boolean login() {
+	boolean login(final IEventBroker eventBroker) {
+		browserNavigation = RWT.getClient().getService(BrowserNavigation.class);
+		if (browserNavigation != null)
+			browserNavigation.addBrowserNavigationListener(new BrowserNavigationListener() {
+				private static final long serialVersionUID = -3668136623771902865L;
+
+				@Override
+				public void navigated(BrowserNavigationEvent event) {
+					state = event.getState();
+					System.out.println("state=" + state);
+					if (uxContext != null)// is logged in
+						stateChanged();
+				}
+			});
+
 		Subject subject = Subject.getSubject(AccessController.getContext());
 		Display display = Display.getCurrent();
 		CmsLoginShell loginShell = new CmsLoginShell(this);
@@ -49,13 +77,21 @@ public class CmsLoginLifecycle implements CmsView {
 			return false;
 		uxContext = new SimpleUxContext();
 
+		eventBroker.subscribe(UIEvents.UILifeCycle.APP_STARTUP_COMPLETE, new EventHandler() {
+			@Override
+			public void handleEvent(Event event) {
+				startupComplete();
+				eventBroker.unsubscribe(this);
+			}
+		});
+
 		// lcs.changeApplicationLocale(Locale.FRENCH);
 		return true;
 	}
 
 	@PreSave
 	void destroy() {
-		//logout();
+		// logout();
 	}
 
 	@Override
@@ -65,8 +101,7 @@ public class CmsLoginLifecycle implements CmsView {
 
 	@Override
 	public void navigateTo(String state) {
-		// TODO Auto-generated method stub
-
+		browserNavigation.pushState(state, state);
 	}
 
 	@Override
@@ -97,13 +132,14 @@ public class CmsLoginLifecycle implements CmsView {
 
 	@Override
 	public void exception(Throwable e) {
-		log.error("Unexpected exception in Eclipse 4 RAP", e);
+		String msg = "Unexpected exception in Eclipse 4 RAP";
+		log.error(msg, e);
+		CmsFeedback.show(msg, e);
 	}
 
 	@Override
 	public CmsImageManager getImageManager() {
-		// TODO Auto-generated method stub
-		return null;
+		throw new UnsupportedOperationException();
 	}
 
 	protected Subject getSubject() {
@@ -115,4 +151,21 @@ public class CmsLoginLifecycle implements CmsView {
 		return CurrentUser.isAnonymous(getSubject());
 	}
 
+	// CALLBACKS
+	protected void startupComplete() {
+	}
+
+	protected void stateChanged() {
+
+	}
+
+	// GETTERS
+	protected BrowserNavigation getBrowserNavigation() {
+		return browserNavigation;
+	}
+
+	protected String getState() {
+		return state;
+	}
+
 }
-- 
2.30.2