Ensure progress bar LibreOfficeKit callbacks don't repeat the same percentage

Gets rid of superfluous sequential callbacks with the same percentage when
loading large documents.

This reverts commit cec72eff.

Change-Id: I70f43f7e3a650c76cbcbbc60ebb2d47efaca06a5

framework/inc/helper/statusindicator.hxx

@@ -69,6 +69,8 @@ class StatusIndicator : public  ::cppu::WeakImplHelper1< css::task::XStatusIndic
         css::uno::WeakReference< css::task::XStatusIndicatorFactory > m_xFactory;
 
         sal_Int32 m_nRange;
+        // We want the callback percentages to increase monotonically
+        int m_nLastCallbackPercent;
 
     // c++ interface
     public:

framework/source/helper/statusindicator.cxx

@@ -38,6 +38,7 @@ void SAL_CALL StatusIndicator::start(const OUString& sText ,
     if (comphelper::LibreOfficeKit::isActive())
     {
         m_nRange = nRange;
+        m_nLastCallbackPercent = -1;
 
         comphelper::LibreOfficeKit::statusIndicatorStart();
         return;
@@ -102,7 +103,11 @@ void SAL_CALL StatusIndicator::setValue(sal_Int32 nValue)
     if (comphelper::LibreOfficeKit::isActive())
     {
         int nPercent = (100*nValue)/m_nRange;
-        comphelper::LibreOfficeKit::statusIndicatorSetValue(nPercent);
+        if (nPercent != m_nLastCallbackPercent)
+        {
+            comphelper::LibreOfficeKit::statusIndicatorSetValue(nPercent);
+            m_nLastCallbackPercent = nPercent;
+        }
         return;
     }