n719734: Overridding properties from master/layout.

When there are conflicting properties in masterslide->layout->slide
most recent (i.e. e.g. slide has higher priority than layout)
should be used.

oox/inc/oox/helper/propertymap.hxx

@@ -86,6 +86,9 @@ public:
     inline void         assignUsed( const PropertyMap& rPropMap )
                             { insert( rPropMap.begin(), rPropMap.end() ); }
 
+    /** Inserts all properties contained in the passed property map */
+    void                assignAll( const PropertyMap& rPropMap );
+
     /** Returns a sequence of property values, filled with all contained properties. */
     ::com::sun::star::uno::Sequence< ::com::sun::star::beans::PropertyValue >
                         makePropertyValueSequence() const;

oox/source/drawingml/textparagraphproperties.cxx

@@ -376,7 +376,7 @@ TextParagraphProperties::~TextParagraphProperties()
 
 void TextParagraphProperties::apply( const TextParagraphProperties& rSourceProps )
 {
-    maTextParagraphPropertyMap.insert( rSourceProps.maTextParagraphPropertyMap.begin(), rSourceProps.maTextParagraphPropertyMap.end() );
+    maTextParagraphPropertyMap.assignAll( rSourceProps.maTextParagraphPropertyMap );
     maBulletList.apply( rSourceProps.maBulletList );
     maTextCharacterProperties.assignUsed( rSourceProps.maTextCharacterProperties );
     if ( rSourceProps.maParaTopMargin.bHasValue )

oox/source/helper/propertymap.cxx

@@ -234,6 +234,12 @@ const Any* PropertyMap::getProperty( sal_Int32 nPropId ) const
     return (aIt == end()) ? 0 : &aIt->second;
 }
 
+void PropertyMap::assignAll( const PropertyMap& rPropMap )
+{
+    for( PropertyMap::const_iterator it=rPropMap.begin(); it != rPropMap.end(); it++ )
+        (*this)[it->first] = it->second;
+}
+
 Sequence< PropertyValue > PropertyMap::makePropertyValueSequence() const
 {
     Sequence< PropertyValue > aSeq( static_cast< sal_Int32 >( size() ) );