Added method -[SSYProgressView incrementAndRunDoubleValueBy:].

Author: jerrykrinock

SSYProgressView.h

@@ -192,6 +192,16 @@ extern float const SSYProgressPriorityRegular;
 */
 - (void)incrementDoubleValueBy:(double)value ;
 
+/*!
+ @brief    Sets the receiver to show a progress bar, increments
+ its doubleValue (the progress value) by a given value, and runs the
+ main run loop.
+ 
+ @details  This is useful if you want the receiver's view to update
+ before long-running operations continue on the main therad.
+*/
+- (void)incrementAndRunDoubleValueBy:(double)value ;
+
 /*!
  @brief    Sets the receiver to show a progress bar, and increments
  its doubleValue (the progress value) by a given value wrapped in

SSYProgressView.m

@@ -1007,6 +1007,21 @@ - (void)incrementDoubleValueBy:(double)delta {
 	[self setDoubleValue:newProgressValue] ;
 }	
 
+- (void)incrementAndRunDoubleValueBy:(double)delta  {
+    double newProgressValue = [self progressValue] + delta ;
+    [self setProgressValue:newProgressValue] ;
+    NSTimeInterval secondsNow = [NSDate timeIntervalSinceReferenceDate] ;
+    if (secondsNow > [self nextProgressUpdate]) {
+        [self setNextProgressUpdate:(secondsNow + PROGRESS_UPDATE_PERIOD)] ;
+        [NSInvocation invokeOnMainThreadTarget:self
+                                  selector:@selector(unsafeSetDoubleValue:)
+                           retainArguments:YES
+                             waitUntilDone:YES
+                         argumentAddresses:&newProgressValue] ;
+        [[NSRunLoop mainRunLoop] runUntilDate:[NSDate date]];
+    }
+}
+
 - (void)incrementDoubleValueByObject:(NSNumber*)value {
 	[self incrementDoubleValueBy:[value doubleValue]] ;
 }