Resolves tdf#153499 - Hide newly introduced frame label

Frame content is not shown for existing entries
Follow-up to 4ec75d22eb

Change-Id: Ic2b40b19424245ede326a5ef5b53f684ca8a3f94
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/151166
Reviewed-by: Seth Chaiklin <sdc.blanco@youmail.dk>
Reviewed-by: Heiko Tietze <heiko.tietze@documentfoundation.org>
Tested-by: Heiko Tietze <heiko.tietze@documentfoundation.org>

sw/source/ui/index/swuiidxmrk.cxx

@@ -168,6 +168,7 @@ SwIndexMarkPane::SwIndexMarkPane(std::shared_ptr<weld::Dialog> xDialog, weld::Bu
     , m_xNextSameBT(rBuilder.weld_button("last"))
     , m_xPrevBT(rBuilder.weld_button("previous"))
     , m_xNextBT(rBuilder.weld_button("next"))
+    , m_xForSelectedEntry(rBuilder.weld_label("selectedentrytitle"))
 {
     m_xSyncED->show();
 
@@ -345,6 +346,7 @@ void SwIndexMarkPane::InitControls()
             //to include all equal entries may only be allowed in the body and even there
             //only when a simple selection exists
             const FrameTypeFlags nFrameType = m_pSh->GetFrameType(nullptr,true);
+            m_xForSelectedEntry->show();
             m_xApplyToAllCB->show();
             m_xSearchCaseSensitiveCB->show();
             m_xSearchCaseWordOnlyCB->show();

sw/source/uibase/inc/swuiidxmrk.hxx

@@ -87,6 +87,7 @@ class SwIndexMarkPane
     std::unique_ptr<weld::Button> m_xNextSameBT;
     std::unique_ptr<weld::Button> m_xPrevBT;
     std::unique_ptr<weld::Button> m_xNextBT;
+    std::unique_ptr<weld::Label> m_xForSelectedEntry;
 
     void            Apply();
     void            InitControls();

sw/uiconfig/swriter/ui/indexentry.ui

@@ -582,8 +582,8 @@
             </child>
             <child type="label">
               <object class="GtkLabel" id="selectedentrytitle">
-                <property name="visible">True</property>
                 <property name="can-focus">False</property>
+                <property name="no-show-all">True</property>
                 <property name="label" translatable="yes" context="indexentry|selectedentrytitle">For Selected Entry</property>
                 <attributes>
                   <attribute name="weight" value="bold"/>