sd: fix LOK search result highlight when result is not on the current slide

By adding a new callback event, so clients can switch to the correct
slide.

Change-Id: I6c2388eb11ef97811cc644fe3a9d3866aa82fd75

include/LibreOfficeKit/LibreOfficeKitEnums.h

@@ -148,7 +148,14 @@ typedef enum
      * Clients should assume that data returned by an earlier
      * lok::Document::getDocumentSize() call is no longer valid.
      */
-    LOK_CALLBACK_PAGE_COUNT_CHANGED
+    LOK_CALLBACK_PAGE_COUNT_CHANGED,
+
+    /**
+     * The current part number is changed.
+     *
+     * Payload is a single 0-based integer.
+     */
+    LOK_CALLBACK_SET_PART
 }
 LibreOfficeKitCallbackType;
 

sd/source/ui/view/drviews1.cxx

@@ -81,6 +81,7 @@
 
 #include <sfx2/request.hxx>
 #include <boost/bind.hpp>
+#include <LibreOfficeKit/LibreOfficeKitEnums.h>
 
 using namespace com::sun::star;
 
@@ -1098,6 +1099,11 @@ bool DrawViewShell::SwitchPage(sal_uInt16 nSelectedPage)
         mpDrawView->AdjustMarkHdl();
     }
 
+    if (bOK)
+    {
+        OString aPayload = OString::number(nSelectedPage);
+        GetDoc()->libreOfficeKitCallback(LOK_CALLBACK_SET_PART, aPayload.getStr());
+    }
     return bOK;
 }