Added a notification mode to Scrollbar::setCurrentRange()

modules/juce_gui_basics/layout/juce_ScrollBar.cpp

@@ -95,7 +95,8 @@ void ScrollBar::setRangeLimits (const double newMinimum, const double newMaximum
     setRangeLimits (Range<double> (newMinimum, newMaximum));
 }
 
-bool ScrollBar::setCurrentRange (const Range<double>& newRange)
+bool ScrollBar::setCurrentRange (const Range<double>& newRange,
+                                 const NotificationType notification)
 {
     const Range<double> constrainedRange (totalRange.constrainRange (newRange));
 
@@ -104,7 +105,12 @@ bool ScrollBar::setCurrentRange (const Range<double>& newRange)
         visibleRange = constrainedRange;
 
         updateThumbPosition();
-        triggerAsyncUpdate();
+
+        if (notification != dontSendNotification)
+            triggerAsyncUpdate();
+
+        if (notification == sendNotificationSync)
+            handleUpdateNowIfNeeded();
 
         return true;
     }

modules/juce_gui_basics/layout/juce_ScrollBar.h

@@ -137,10 +137,14 @@ public:
         asynchronous call to ScrollBar::Listener::scrollBarMoved() for all the listeners that
         are registered.
 
+        The notification parameter can be used to optionally send or inhibit a callback to
+        any scrollbar listeners.
+
         @returns true if the range was changed, or false if nothing was changed.
         @see getCurrentRange. setCurrentRangeStart
     */
-    bool setCurrentRange (const Range<double>& newRange);
+    bool setCurrentRange (const Range<double>& newRange,
+                          NotificationType notification = sendNotificationAsync);
 
     /** Changes the position of the scrollbar's 'thumb'.