Merge of (#10460) to Vaadin 7.

Math.min/Math.max fix for iOS6.

Change-Id: I386140a35eb99a2a0b3db7524ae3d49e428217e8

diff --git a/client/src/com/vaadin/client/ApplicationConfiguration.java b/client/src/com/vaadin/client/ApplicationConfiguration.java
index d43e2b4d3144198b20dcdd17610eb6ea27db72f1..5c3ec36d78fcbf452d21f3144fced00a4508b40d 100644 (file)
--- a/client/src/com/vaadin/client/ApplicationConfiguration.java
+++ b/client/src/com/vaadin/client/ApplicationConfiguration.java
@@ -533,6 +533,14 @@ public class ApplicationConfiguration implements EntryPoint {
     @Override
     public void onModuleLoad() {
 
+        BrowserInfo browserInfo = BrowserInfo.get();
+
+        // Enable iOS6 cast fix (see #10460)
+        if (browserInfo.isIOS() && browserInfo.isWebkit()
+                && browserInfo.getBrowserMajorVersion() == 6) {
+            enableIOS6castFix();
+        }
+
         // Prepare VConsole for debugging
         if (isDebugMode()) {
             Console console = GWT.create(Console.class);
@@ -568,6 +576,18 @@ public class ApplicationConfiguration implements EntryPoint {
         registerCallback(GWT.getModuleName());
     }
 
+    /**
+     * Fix to iOS6 failing when comparing with 0 directly after the kind of
+     * comparison done by GWT when a double or float is cast to an int. Forcing
+     * another trivial operation (other than a compare to 0) after the dangerous
+     * comparison makes the issue go away. See #10460.
+     */
+    private static native void enableIOS6castFix()
+    /*-{
+          Math.max = function(a,b) {return (a > b === 1 < 2)? a : b}
+          Math.min = function(a,b) {return (a < b === 1 < 2)? a : b}
+    }-*/;
+
     /**
      * Registers that callback that the bootstrap javascript uses to start
      * applications once the widgetset is loaded and all required information is