Fixed issue with NPE in CSSWatcher caused by race condition - CSS watcher launched before JavaSEPort had been instantiated. #3590

Author: shannahcloudbeds

Ports/JavaSE/src/com/codename1/impl/javase/CSSWatcher.java

@@ -187,7 +187,7 @@ public void run() {
                 System.out.println("Watching CSS files for changes: ["+overrideInputs+"]");
             }
         }
-        File resDir = JavaSEPort.instance.getSourceResourcesDir();
+        File resDir = JavaSEPort.getSourceResourcesDir();
 
         File destFile = new File(resDir, "theme.res");
 

Ports/JavaSE/src/com/codename1/impl/javase/Executor.java

@@ -197,20 +197,7 @@ public Object invoke(Object o, Method method, Object[] os) throws Throwable {
         } 
 
         setProxySettings();
-        if (CSSWatcher.isSupported()) {
-            // Delay the starting of the CSS watcher to avoid compiling the CSS file while the theme is being loaded.
-            Timer t = new Timer();
-            TimerTask tt = new TimerTask() {
-                @Override
-                public void run() {
-                    CSSWatcher cssWatcher = new CSSWatcher();
-                    cssWatcher.start();
-                }
-            };
-            t.schedule(tt, 2000);
 
-        }
-        
         final Properties p = new Properties();
         String currentDir = System.getProperty("user.dir");
         File props = new File(currentDir, "codenameone_settings.properties");
@@ -235,11 +222,7 @@ public void run() {
                 } catch (IOException ex) {
                 }
             }
-            
-            
-            
-            
-        
+
         } else {
             System.out.println("Cannot find codenameone_settings.properties at "+props);
         }
@@ -289,6 +272,19 @@ public void run() {
                                 CodenameOneImplementation.setPurchaseCallback((PurchaseCallback)app);
                             }
                             Display.init(null);
+                            if (CSSWatcher.isSupported()) {
+                                // Delay the starting of the CSS watcher to avoid compiling the CSS file while the theme is being loaded.
+                                Timer t = new Timer();
+                                TimerTask tt = new TimerTask() {
+                                    @Override
+                                    public void run() {
+                                        CSSWatcher cssWatcher = new CSSWatcher();
+                                        cssWatcher.start();
+                                    }
+                                };
+                                t.schedule(tt, 2000);
+
+                            }
 
                             //if (isDebug && usingHotswapAgent) {
                             if (MavenUtils.isRunningInMaven() && MavenUtils.isRunningInJDK()) {

Ports/JavaSE/src/com/codename1/impl/javase/JavaSEPort.java

@@ -13593,11 +13593,11 @@ public Boolean canExecute(String url) {
     }
 
 
-    public File getCWD() {
+    public static File getCWD() {
         return new File(System.getProperty("user.dir"));
     }
 
-    public File getSourceResourcesDir() {
+    public static File getSourceResourcesDir() {
         File resDir = new File(getCWD(), "src" + File.separator + "main" + File.separator + "resources");
         if (!resDir.exists()) {
             resDir = new File(getCWD(), "src");

Ports/JavaSE/src/com/codename1/impl/javase/Simulator.java

@@ -81,24 +81,6 @@ private static void loadSimulatorProperties(File projectDir) {
 
    }
 
-
-    private static void setCWD() {
-        try {
-            File currDir = new File(System.getProperty("user.dir")).getCanonicalFile();
-            File codenameOneSettings = new File(currDir, "codenameone_settings.properties");
-            if (codenameOneSettings.exists()) {
-                return;
-            }
-            currDir = new File(currDir, "common");
-            codenameOneSettings = new File(currDir, codenameOneSettings.getName());
-            if (codenameOneSettings.exists()) {
-                System.setProperty("user.dir", currDir.getAbsolutePath());
-            }
-        } catch (IOException ex) {
-            ex.printStackTrace();
-        }
-    }
-
     /**
      * Accepts the classname to launch
      */
@@ -128,8 +110,7 @@ public static void main(final String[] argv) throws Exception {
         if (System.getenv("CN1_SIMULATOR_SKIN") != null) {
             System.setProperty("skin", System.getenv("CN1_SIMULATOR_SKIN"));
         }
-        
-        
+
         String classPathStr = System.getProperty("java.class.path");
         if (System.getProperty("cn1.class.path") != null) {
             classPathStr += File.pathSeparator + System.getProperty("cn1.class.path");