Backed out changeset a5ff95602119 (bug 1905021) as requested for caus…

…ing accessibility crashes related to selection a=backout

UltraBlame original commit: 48a7ce6fe0888f9be96810dcf74829c995f29764

accessible/base/SelectionManager.cpp

@@ -799,17 +799,6 @@ mCaretOffset
 1
 )
 {
-TextLeafPoint
-caret
-=
-TextLeafPoint
-:
-:
-GetCaret
-(
-caretCntr
-)
-;
 RefPtr
 <
 AccCaretMoveEvent
@@ -827,9 +816,12 @@ selection
 IsCollapsed
 (
 )
-caret
-.
-mIsEndOfLineInsertionPoint
+caretCntr
+-
+>
+IsCaretAtEndOfLine
+(
+)
 event
 -
 >

accessible/base/TextLeafRange.cpp

@@ -4966,6 +4966,16 @@ Accessible
 aAcc
 )
 {
+HyperTextAccessibleBase
+*
+ht
+;
+int32_t
+htOffset
+;
+bool
+isEndOfLine
+;
 if
 (
 LocalAccessible
@@ -4980,8 +4990,6 @@ AsLocal
 )
 )
 {
-HyperTextAccessible
-*
 ht
 =
 HyperTextFor
@@ -5001,7 +5009,6 @@ TextLeafPoint
 )
 ;
 }
-int32_t
 htOffset
 =
 ht
@@ -5026,113 +5033,23 @@ TextLeafPoint
 )
 ;
 }
-TextLeafPoint
-point
-=
-ht
--
->
-ToTextLeafPoint
-(
-htOffset
-)
-;
-nsIFrame
-*
-frame
+isEndOfLine
 =
-ht
--
->
-GetFrame
-(
-)
-;
-RefPtr
-<
-nsFrameSelection
->
-sel
-=
-frame
-?
-frame
--
->
-GetFrameSelection
-(
-)
-:
-nullptr
-;
-if
-(
-sel
-&
-&
-sel
+localAcc
 -
 >
-GetHint
-(
-)
-=
-=
-CaretAssociationHint
-:
-:
-Before
-)
-{
-if
+AsHyperText
 (
-point
-.
-mOffset
-=
-=
-0
 )
-{
-point
-.
-mIsEndOfLineInsertionPoint
-=
-IsLocalAccAtLineStart
-(
-point
-.
-mAcc
 -
 >
-AsLocal
-(
-)
-)
-&
-&
-!
-point
-.
-IsParagraphStart
+IsCaretAtEndOfLine
 (
 )
 ;
 }
 else
 {
-point
-.
-mIsEndOfLineInsertionPoint
-=
-true
-;
-}
-}
-return
-point
-;
-}
 DocAccessibleParent
 *
 remoteDoc
@@ -5149,11 +5066,14 @@ Document
 (
 )
 ;
-auto
-[
+std
+:
+:
+tie
+(
 ht
 htOffset
-]
+)
 =
 remoteDoc
 -
@@ -5174,6 +5094,16 @@ TextLeafPoint
 )
 ;
 }
+isEndOfLine
+=
+remoteDoc
+-
+>
+IsCaretAtEndOfLine
+(
+)
+;
+}
 TextLeafPoint
 point
 =
@@ -5189,12 +5119,7 @@ point
 .
 mIsEndOfLineInsertionPoint
 =
-remoteDoc
--
->
-IsCaretAtEndOfLine
-(
-)
+isEndOfLine
 ;
 return
 point

accessible/generic/HyperTextAccessible-inl.h

@@ -86,6 +86,44 @@ aOffset
 ;
 }
 inline
+bool
+HyperTextAccessible
+:
+:
+IsCaretAtEndOfLine
+(
+)
+const
+{
+RefPtr
+<
+nsFrameSelection
+>
+frameSelection
+=
+FrameSelection
+(
+)
+;
+return
+frameSelection
+&
+&
+frameSelection
+-
+>
+GetHint
+(
+)
+=
+=
+CaretAssociationHint
+:
+:
+Before
+;
+}
+inline
 already_AddRefed
 <
 nsFrameSelection

accessible/generic/HyperTextAccessible.h

@@ -410,6 +410,12 @@ nsIWidget
 aWidget
 )
 ;
+bool
+IsCaretAtEndOfLine
+(
+)
+const
+;
 virtual
 int32_t
 SelectionCount