Gradually typed Link

Turn the Link class into a template abstracting over the link's argument and
return types, but provide default template arguments that keep the generic,
unsafe "void* in, sal_IntPtr out" behvior.  That way, individual uses of the
Link class can be updated over time.

All the related macros are duplicated with ..._TYPED counterparts, that
additionally take the RetType (except for LINK_TYPED, which manages to infer the
relevant types from the supplied Member).

(It would have been attractive to change the "untyped" LinkStubs from taking a
void* to a properly typed ArgType parameter, too, but that would cause
-fsanitize=function to flag uses of "untyped" Link::Call.)

Change-Id: I3b0140378bad99abbf240140ebb4a46a05d2d2f8

1 files changed, 9 insertions, 9 deletions

diff --git a/include/vcl/split.hxx b/include/vcl/split.hxx
index 91a1c0df99c5..a9a185bb67eb 100644
--- a/include/vcl/split.hxx
+++ b/include/vcl/split.hxx
@@ -39,9 +39,9 @@ private:
     bool                mbKbdSplitting;
     long                mbInKeyEvent;
     long                mnKeyboardStepSize;
-    Link                maStartSplitHdl;
-    Link                maSplitHdl;
-    Link                maEndSplitHdl;
+    Link<>              maStartSplitHdl;
+    Link<>              maSplitHdl;
+    Link<>              maEndSplitHdl;
 
     SAL_DLLPRIVATE void      ImplInitSplitterData();
     SAL_DLLPRIVATE void      ImplDrawSplitter();
@@ -99,12 +99,12 @@ public:
     // the default is 10% of the reference window's width/height
     void                SetKeyboardStepSize( long nStepSize );
 
-    void                SetStartSplitHdl( const Link& rLink ) { maStartSplitHdl = rLink; }
-    const Link&         GetStartSplitHdl() const { return maStartSplitHdl; }
-    void                SetSplitHdl( const Link& rLink ) { maSplitHdl = rLink; }
-    void                SetEndSplitHdl( const Link& rLink ) { maEndSplitHdl = rLink; }
-    const Link&         GetEndSplitHdl() const { return maEndSplitHdl; }
-    const Link&         GetSplitHdl() const { return maSplitHdl; }
+    void                SetStartSplitHdl( const Link<>& rLink ) { maStartSplitHdl = rLink; }
+    const Link<>&       GetStartSplitHdl() const { return maStartSplitHdl; }
+    void                SetSplitHdl( const Link<>& rLink ) { maSplitHdl = rLink; }
+    void                SetEndSplitHdl( const Link<>& rLink ) { maEndSplitHdl = rLink; }
+    const Link<>&       GetEndSplitHdl() const { return maEndSplitHdl; }
+    const Link<>&       GetSplitHdl() const { return maSplitHdl; }
 };
 
 #endif // INCLUDED_VCL_SPLIT_HXX