tdf#158773 do the cheap checks first

the HasText() call inside TextProperties::Notify is surprisingly
expensive, so only do it when we know we are interested.

Shaves 25% off the load time here

Change-Id: Iab257add7fd56bf405678944ca8a3482c8f7b142
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/164596
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
diff --git a/svx/source/sdr/properties/textproperties.cxx b/svx/source/sdr/properties/textproperties.cxx
index 220d6a5..90c68df 100644
--- a/svx/source/sdr/properties/textproperties.cxx
+++ b/svx/source/sdr/properties/textproperties.cxx
@@ -550,15 +550,15 @@ namespace sdr::properties
            // call parent
            AttributeProperties::Notify(rBC, rHint);

            SdrTextObj& rObj = static_cast<SdrTextObj&>(GetSdrObject());
            if(!rObj.HasText())
                return;

            SfxHintId nId(rHint.GetId());
            const svx::ITextProvider& rTextProvider(getTextProvider());

            if(SfxHintId::DataChanged == nId && rBC.IsSfxStyleSheet())
            {
                SdrTextObj& rObj = static_cast<SdrTextObj&>(GetSdrObject());
                if(!rObj.HasText())
                    return;

                const svx::ITextProvider& rTextProvider(getTextProvider());
                sal_Int32 nText = rTextProvider.getTextCount();
                while (nText--)
                {
@@ -580,6 +580,11 @@ namespace sdr::properties
            }
            else if(SfxHintId::Dying == nId && rBC.IsSfxStyleSheet())
            {
                SdrTextObj& rObj = static_cast<SdrTextObj&>(GetSdrObject());
                if(!rObj.HasText())
                    return;

                const svx::ITextProvider& rTextProvider(getTextProvider());
                sal_Int32 nText = rTextProvider.getTextCount();
                while (nText--)
                {
@@ -598,6 +603,7 @@ namespace sdr::properties

                if(aOldName != aNewName)
                {
                    const svx::ITextProvider& rTextProvider(getTextProvider());
                    sal_Int32 nText = rTextProvider.getTextCount();
                    while (nText--)
                    {