From dca728c134756f5a4e9296ab7ac95198675a69db Mon Sep 17 00:00:00 2001
From: =?utf8?q?Leif=20=C3=85strand?= <leif@vaadin.com>
Date: Mon, 13 May 2013 14:46:58 +0300
Subject: [PATCH] Warn if using old widgetset (#11836)

Change-Id: Id7332da3468572f4df55aa7b3fed39ef811fe09d
---
 .../tests/components/AbstractTestUI.java      | 64 +++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/uitest/src/com/vaadin/tests/components/AbstractTestUI.java b/uitest/src/com/vaadin/tests/components/AbstractTestUI.java
index a044b52f18..45809e3270 100644
--- a/uitest/src/com/vaadin/tests/components/AbstractTestUI.java
+++ b/uitest/src/com/vaadin/tests/components/AbstractTestUI.java
@@ -1,10 +1,16 @@
 package com.vaadin.tests.components;
 
+import java.io.File;
+
+import com.vaadin.annotations.Widgetset;
 import com.vaadin.server.VaadinRequest;
+import com.vaadin.server.VaadinServlet;
 import com.vaadin.server.WebBrowser;
 import com.vaadin.shared.ui.label.ContentMode;
 import com.vaadin.ui.Component;
 import com.vaadin.ui.Label;
+import com.vaadin.ui.Notification;
+import com.vaadin.ui.Notification.Type;
 import com.vaadin.ui.UI;
 import com.vaadin.ui.VerticalLayout;
 
@@ -27,9 +33,67 @@ public abstract class AbstractTestUI extends UI {
         rootLayout.addComponent(layout);
         ((VerticalLayout) getContent()).setExpandRatio(layout, 1);
 
+        warnIfWidgetsetMaybeNotCompiled();
+
         setup(request);
     }
 
+    protected void warnIfWidgetsetMaybeNotCompiled() {
+        // Ignore if using debug mode
+        if (getPage().getLocation().getQuery().matches(".*[&?]gwt\\.codesvr.*")) {
+            return;
+        }
+
+        // Find out the widgetset of this UI based on @Widgetset annotation
+        Class<?> currentType = getClass();
+        String usedWidgetset = VaadinServlet.DEFAULT_WIDGETSET;
+        while (currentType != Object.class) {
+            Widgetset annotation = currentType.getAnnotation(Widgetset.class);
+            if (annotation != null) {
+                usedWidgetset = annotation.value();
+                break;
+            } else {
+                currentType = currentType.getSuperclass();
+            }
+        }
+
+        // Assuming the same folder structure as in git repo
+        // Assuming project root is the working dir of this process
+        File widgetsetsFolder = new File("WebContent/VAADIN/widgetsets");
+        if (!widgetsetsFolder.isDirectory()) {
+            return;
+        }
+
+        // Find the most newly compiled widgetset
+        long newestWidgetsetTimestamp = -1;
+        String newestWidgetsetName = null;
+        File[] children = widgetsetsFolder.listFiles();
+        for (File child : children) {
+            if (!child.isDirectory() || child.getName().equals("WEB-INF")) {
+                continue;
+            }
+            long lastModified = child.lastModified();
+            if (lastModified > newestWidgetsetTimestamp) {
+                newestWidgetsetTimestamp = lastModified;
+                newestWidgetsetName = child.getName();
+            }
+        }
+
+        // Compare to currently used widgetset, with a 30 minute grace period
+        File currentWidgetsetFolder = new File(widgetsetsFolder, usedWidgetset);
+        long currentWidgetsetTimestamp = currentWidgetsetFolder.lastModified();
+        int halfHour = 30 * 60 * 1000;
+        if (currentWidgetsetTimestamp + halfHour < newestWidgetsetTimestamp) {
+            Notification
+                    .show("The currently used widgetset ("
+                            + usedWidgetset
+                            + ") was compiled long before the most recently compiled one ("
+                            + newestWidgetsetName
+                            + "). Are you sure you have compiled the right widgetset?",
+                            Type.WARNING_MESSAGE);
+        }
+    }
+
     private VerticalLayout layout;
 
     protected VerticalLayout getLayout() {
-- 
2.39.5