sw draw text: emit LOK_CALLBACK_INVALIDATE_VIEW_CURSOR from registerCallback()

With this, in case the first view has an active text edit and a new view
is created, then the cursor position is instantly visible in the second
view, even if the first view's cursor does not move later.

(cherry picked from commit 586789fe757c0eb350c360a49cf90431a0bd5b24)

Conflicts:
	sw/source/core/crsr/crsrsh.cxx

Change-Id: Ia82e7dc1ce9bb58c67a280179ecadc74d3b63026

3 files changed, 26 insertions, 2 deletions

diff --git a/editeng/source/editeng/editview.cxx b/editeng/source/editeng/editview.cxx
index 5d64e4f81b93..51d9cd42d3b9 100644
--- a/editeng/source/editeng/editview.cxx
+++ b/editeng/source/editeng/editview.cxx
@@ -598,6 +598,11 @@ void EditView::RegisterViewShell(OutlinerViewShell* pViewShell)
     pImpEditView->RegisterViewShell(pViewShell);
 }
 
+void EditView::RegisterOtherShell(OutlinerViewShell* pOtherShell)
+{
+    pImpEditView->RegisterOtherShell(pOtherShell);
+}
+
 void EditView::SetControlWord( EVControlBits nWord )
 {
     pImpEditView->nControl = nWord;
diff --git a/editeng/source/editeng/impedit.cxx b/editeng/source/editeng/impedit.cxx
index 795a82453ef8..3fa2b5111d37 100644
--- a/editeng/source/editeng/impedit.cxx
+++ b/editeng/source/editeng/impedit.cxx
@@ -80,6 +80,7 @@ ImpEditView::ImpEditView( EditView* pView, EditEngine* pEng, vcl::Window* pWindo
     pPointer            = nullptr;
     pBackgroundColor    = nullptr;
     mpViewShell = nullptr;
+    mpOtherShell = nullptr;
     nScrollDiffX        = 0;
     nExtraCursorFlags   = 0;
     nCursorBidiLevel    = CURSOR_BIDILEVEL_DONTKNOW;
@@ -122,6 +123,11 @@ void ImpEditView::RegisterViewShell(OutlinerViewShell* pViewShell)
     mpViewShell = pViewShell;
 }
 
+void ImpEditView::RegisterOtherShell(OutlinerViewShell* pOtherShell)
+{
+    mpOtherShell = pOtherShell;
+}
+
 const OutlinerViewShell* ImpEditView::GetViewShell() const
 {
     return mpViewShell;
@@ -1004,8 +1010,17 @@ void ImpEditView::ShowCursor( bool bGotoCursor, bool bForceVisCursor )
             aRect.setWidth(0);
 
             OString sRect = aRect.toString();
-            mpViewShell->libreOfficeKitViewCallback(LOK_CALLBACK_INVALIDATE_VISIBLE_CURSOR, sRect.getStr());
-            mpViewShell->NotifyOtherViews(LOK_CALLBACK_INVALIDATE_VIEW_CURSOR, "rectangle", sRect);
+            if (mpOtherShell)
+            {
+                // An other shell wants to know about our existing cursor.
+                if (mpViewShell != mpOtherShell)
+                    mpViewShell->NotifyOtherView(mpOtherShell, LOK_CALLBACK_INVALIDATE_VIEW_CURSOR, "rectangle", sRect);
+            }
+            else
+            {
+                mpViewShell->libreOfficeKitViewCallback(LOK_CALLBACK_INVALIDATE_VISIBLE_CURSOR, sRect.getStr());
+                mpViewShell->NotifyOtherViews(LOK_CALLBACK_INVALIDATE_VIEW_CURSOR, "rectangle", sRect);
+            }
         }
 
         CursorDirection nCursorDir = CursorDirection::NONE;
diff --git a/editeng/source/editeng/impedit.hxx b/editeng/source/editeng/impedit.hxx
index b910da6f041d..a1430c601077 100644
--- a/editeng/source/editeng/impedit.hxx
+++ b/editeng/source/editeng/impedit.hxx
@@ -224,6 +224,8 @@ private:
     Color*              pBackgroundColor;
     /// Containing view shell, if any.
     OutlinerViewShell* mpViewShell;
+    /// An other shell, just listening to our state, if any.
+    OutlinerViewShell* mpOtherShell;
     EditEngine*         pEditEngine;
     VclPtr<vcl::Window> pOutWin;
     Pointer*            pPointer;
@@ -371,6 +373,8 @@ public:
     /// Informs this edit view about which view shell contains it.
     void RegisterViewShell(OutlinerViewShell* pViewShell);
     const OutlinerViewShell* GetViewShell() const;
+    /// Informs this edit view about which other shell listens to it.
+    void RegisterOtherShell(OutlinerViewShell* pViewShell);
 
     bool            IsWrongSpelledWord( const EditPaM& rPaM, bool bMarkIfWrong );
     OUString        SpellIgnoreWord();