perf: dynamic_cast only when necessary, arranged in likelihood of occurrence

Ran into this during mass broadcasts happening when captions for note/ScPostIt
objections are generated before saving a Calc document.

Change-Id: I65940a8c8508649b041456ebaded9d672bb051f3

1 files changed, 29 insertions, 32 deletions

diff --git a/svx/source/accessibility/AccessibleTextHelper.cxx b/svx/source/accessibility/AccessibleTextHelper.cxx
index 7bfce1f59169..39ad4c88b44e 100644
--- a/svx/source/accessibility/AccessibleTextHelper.cxx
+++ b/svx/source/accessibility/AccessibleTextHelper.cxx
@@ -1345,23 +1345,42 @@ namespace accessibility
 
         mbInNotify = true;
 
-        // determine hint type
-        const SdrHint* pSdrHint = dynamic_cast<const SdrHint*>( &rHint );
-        const TextHint* pTextHint = dynamic_cast<const TextHint*>( &rHint );
-        const SvxViewChangedHint* pViewHint = dynamic_cast<const SvxViewChangedHint*>( &rHint );
-        const SvxEditSourceHint* pEditSourceHint = dynamic_cast<const SvxEditSourceHint*>( &rHint );
-
         try
         {
-            // Process notification event
-            if( pEditSourceHint )
+            // Process notification event, arranged in order of likelihood of
+            // occurrence to avoid unnecessary dynamic_cast. Note that
+            // SvxEditSourceHint is derived from TextHint, so has to be checked
+            // before that.
+            if( const SvxViewChangedHint* pViewHint = dynamic_cast<const SvxViewChangedHint*>( &rHint ) )
+            {
+                maEventQueue.Append( *pViewHint );
+
+                // process visibility right away, if not within an
+                // open EE notification frame. Otherwise, event
+                // processing would be delayed until next EE
+                // notification sequence.
+                if( maEventOpenFrames == 0 )
+                    ProcessQueue();
+            }
+            else if( const SdrHint* pSdrHint = dynamic_cast<const SdrHint*>( &rHint ) )
+            {
+                maEventQueue.Append( *pSdrHint );
+
+                // process drawing layer events right away, if not
+                // within an open EE notification frame. Otherwise,
+                // event processing would be delayed until next EE
+                // notification sequence.
+                if( maEventOpenFrames == 0 )
+                    ProcessQueue();
+            }
+            else if( const SvxEditSourceHint* pEditSourceHint = dynamic_cast<const SvxEditSourceHint*>( &rHint ) )
             {
                 maEventQueue.Append( *pEditSourceHint );
                 // EditEngine should emit TEXT_SELECTION_CHANGED events (#i27299#)
                 if( maEventOpenFrames == 0 )
                     ProcessQueue();
             }
-            else if( pTextHint )
+            else if( const TextHint* pTextHint = dynamic_cast<const TextHint*>( &rHint ) )
             {
                 switch( pTextHint->GetId() )
                 {
@@ -1406,29 +1425,7 @@ namespace accessibility
                         break;
                 }
             }
-            else if( pViewHint )
-            {
-                maEventQueue.Append( *pViewHint );
-
-                // process visibility right away, if not within an
-                // open EE notification frame. Otherwise, event
-                // processing would be delayed until next EE
-                // notification sequence.
-                if( maEventOpenFrames == 0 )
-                    ProcessQueue();
-            }
-            else if( pSdrHint )
-            {
-                maEventQueue.Append( *pSdrHint );
-
-                // process drawing layer events right away, if not
-                // within an open EE notification frame. Otherwise,
-                // event processing would be delayed until next EE
-                // notification sequence.
-                if( maEventOpenFrames == 0 )
-                    ProcessQueue();
-            }
-            // it's VITAL to keep the SfxSimpleHint last! It's the base of some classes above!
+            // it's VITAL to keep the SfxHint last! It's the base of the classes above!
             else if( rHint.GetId() )
             {
                 // handle this event _at once_, because after that, objects are invalid