sw_redlinehide: move SwContentNode::GetNode() to SwNoTextNode

SwTextNode's GetDep() may be a WriterMultiListener, which isn't even a
node.

SwTextNode has GetTextNodeForParaProps()/GetTextNodeFirst().

Change-Id: Ica177a6a3cf7c886c9a8d2733fb9cb452a475450

sw/source/core/inc/cntfrm.hxx

@@ -71,9 +71,6 @@ public:
     virtual void Cut() override;
     virtual void Paste( SwFrame* pParent, SwFrame* pSibling = nullptr ) override;
 
-    inline const SwContentNode *GetNode() const;
-    inline       SwContentNode *GetNode();
-
     inline const SwContentFrame *GetFollow() const;
     inline       SwContentFrame *GetFollow();
     SwTextFrame* FindMaster() const;
@@ -114,15 +111,6 @@ inline SwContentFrame* SwContentFrame::GetPrevContentFrame() const
         return const_cast<SwContentFrame*>(ImplGetNextContentFrame( false ));
 }
 
-inline SwContentNode *SwContentFrame::GetNode()
-{
-    return static_cast< SwContentNode* >( GetDep() );
-}
-inline const SwContentNode *SwContentFrame::GetNode() const
-{
-    return static_cast< const SwContentNode* >( GetDep() );
-}
-
 inline const SwContentFrame *SwContentFrame::GetFollow() const
 {
     return static_cast<const SwContentFrame*>(SwFlowFrame::GetFollow());

sw/source/core/inc/notxtfrm.hxx

@@ -54,6 +54,11 @@ protected:
 public:
     SwNoTextFrame( SwNoTextNode * const, SwFrame* );
 
+    const SwContentNode *GetNode() const
+        { return static_cast<SwContentNode const*>(GetDep()); }
+          SwContentNode *GetNode()
+        { return static_cast<SwContentNode      *>(GetDep()); }
+
     virtual bool LeftMargin(SwPaM *) const override;
     virtual bool RightMargin(SwPaM *, bool bAPI = false) const override;
 

sw/source/core/inc/txtfrm.hxx

@@ -398,9 +398,9 @@ public:
     const OUString& GetText() const;
     // TODO: remove GetTextNode
     SwTextNode *GetTextNode()
-        { return static_cast< SwTextNode* >( SwContentFrame::GetNode()); }
+        { return static_cast<SwTextNode*>(SwFrame::GetDep()); }
     const SwTextNode *GetTextNode() const
-        { return static_cast< const SwTextNode* >( SwContentFrame::GetNode()); }
+        { return static_cast<const SwTextNode*>(SwFrame::GetDep()); }
     SwTextNode const* GetTextNodeForParaProps() const;
     SwTextNode      * GetTextNodeFirst()
         { return const_cast<SwTextNode*>(const_cast<SwTextFrame const*>(this)->GetTextNodeFirst()); };