added possibility to handle session expiration by your own

git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/portlets/widgets/session-checker@93510 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/portlets/widgets/sessionchecker/client/CheckSession.java

@@ -18,10 +18,10 @@ import com.google.gwt.user.client.ui.VerticalPanel;
 
 public class CheckSession {
 	private final int MILLI_SECONDS = 45 * 1000; //45 seconds
-	
+
 	//for css and images
 	private CheckSessionBundle images = GWT.create(CheckSessionBundle.class);
-	
+
 	static {
 		CheckSessionBundle.INSTANCE.css().ensureInjected();
 	}
@@ -37,10 +37,13 @@ public class CheckSession {
 	private String username;
 	private String scope;
 	private Timer t;
-	
+
+	//we give the user the possibility to show the dialog or not
+	private boolean showSessionExpiredDialog = true;
+
 	//needed to mask the page when session id up!
 	private Div maskDiv = new Div();
-	
+
 	private static CheckSession singleton;
 	/**
 	 * use this method if you want to get an event when session expires
@@ -71,10 +74,10 @@ public class CheckSession {
 	 * constructor with no events launching when session expires
 	 */
 	private CheckSession() {	
-		
+
 		addMaskDiv2DOM();
 		maskDiv.setStyleName("div-mask");
-		
+
 		//polling timer
 		t = new Timer() {			
 			@Override
@@ -83,7 +86,7 @@ public class CheckSession {
 					@Override
 					public void onSuccess(SessionInfoBean result) {
 						if (result != null) {
-							
+
 							username = result.getUsername();
 							scope = result.getScope();
 							boolean userValid = ( username != null) ? true : false;
@@ -92,7 +95,13 @@ public class CheckSession {
 							if (! (userValid && scopeValid) ) {
 								mask(true);
 								stopPolling();
-								showLogoutDialog();
+								if (showSessionExpiredDialog) {
+									showLogoutDialog();									
+								} else {
+									if (eventBus == null)
+										throw new NullPointerException("Hey, it seems you chose to handle yourself session expiration "
+												+ "but also not to get informed about it (eventbus is null) what's the point then?");
+								}
 								if (eventBus != null) {
 									eventBus.fireEvent(new SessionTimeoutEvent(result));
 								}
@@ -124,22 +133,22 @@ public class CheckSession {
 		else
 			maskDiv.getElement().getStyle().setDisplay(Display.NONE);			
 	}
-	
+
 	private void showLogoutDialog() {
 		GCubeDialog dlg = new GCubeDialog();
 		dlg.setText("Your Session Expired!");
-		
+
 		VerticalPanel topPanel = new VerticalPanel();
 		topPanel.setPixelSize(420, 290);
-		
+
 		topPanel.setHorizontalAlignment(HasAlignment.ALIGN_CENTER);
-		
+
 		HTML toShow = new HTML("<div style=\"margin-top: 40px;\">"
 				+ "<img style=\"margin: 0; vertical-align: middle; \" src='" + images.expired().getSafeUri().asString() + "'>"
 				+ "</div><div style=\"font-size: 18px; height: 20px; padding-top: 20px;\">"
 				+ "Please <a href=\"javascript: location.reload();\">reload<a/> this page.</div>");
 
-		
+
 		topPanel.add(toShow);
 		dlg.add(topPanel);
 		dlg.center();
@@ -166,4 +175,11 @@ public class CheckSession {
 	public void stopPolling() {
 		t.cancel();
 	}	
+
+	public boolean isShowSessionExpiredDialog() {
+		return showSessionExpiredDialog;
+	}
+	public void setShowSessionExpiredDialog(boolean showSessionExpiredDialog) {
+		this.showSessionExpiredDialog = showSessionExpiredDialog;
+	}
 }