2 files changed, 31 insertions, 0 deletions
diff --git a/WebCore/bindings/objc/WebScriptObject.mm b/WebCore/bindings/objc/WebScriptObject.mm
index 3f224f1..37874ac 100644
--- a/WebCore/bindings/objc/WebScriptObject.mm
+++ b/WebCore/bindings/objc/WebScriptObject.mm
@@ -433,6 +433,27 @@ static void getListFromNSArray(ExecState *exec, NSArray *array, RootObject* root
     _didExecute(self);
 }
 
+- (BOOL)hasWebScriptKey:(NSString *)key
+{
+    if (![self _isSafeScript])
+        return NO;
+
+    ExecState* exec = [self _rootObject]->globalObject()->globalExec();
+    ASSERT(!exec->hadException());
+
+    JSLock lock(SilenceAssertionsOnly);
+    BOOL result = [self _imp]->hasProperty(exec, Identifier(exec, stringToUString(String(key))));
+
+    if (exec->hadException()) {
+        addExceptionToConsole(exec);
+        exec->clearException();
+    }
+
+    _didExecute(self);
+
+    return result;
+}
+
 - (NSString *)stringRepresentation
 {
     if (![self _isSafeScript]) {
diff --git a/WebCore/bindings/objc/WebScriptObjectPrivate.h b/WebCore/bindings/objc/WebScriptObjectPrivate.h
index 3a424ce..5da1dde 100644
--- a/WebCore/bindings/objc/WebScriptObjectPrivate.h
+++ b/WebCore/bindings/objc/WebScriptObjectPrivate.h
@@ -59,6 +59,16 @@ namespace WebCore {
 - (JSC::Bindings::RootObject*)_originRootObject;
 @end
 
+@interface WebScriptObject (StagedForPublic)
+/*!
+ @method hasWebScriptKey:
+ @param name The name of the property to check for.
+ @discussion Checks for the existence of the property on the object in the script environment.
+ @result Returns YES if the property exists, NO otherwise.
+ */
+- (BOOL)hasWebScriptKey:(NSString *)name;
+@end
+
 @interface WebScriptObjectPrivate : NSObject
 {
 @public