1 files changed, 82 insertions, 0 deletions
diff --git a/editor/spellchecker/FilteredContentIterator.h b/editor/spellchecker/FilteredContentIterator.h
new file mode 100644
index 0000000000..864cc57c2a
--- /dev/null
+++ b/editor/spellchecker/FilteredContentIterator.h
@@ -0,0 +1,82 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef FilteredContentIterator_h
+#define FilteredContentIterator_h
+
+#include "nsComposeTxtSrvFilter.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsISupportsImpl.h"
+#include "nscore.h"
+#include "mozilla/ContentIterator.h"
+#include "mozilla/UniquePtr.h"
+
+class nsAtom;
+class nsINode;
+class nsRange;
+
+namespace mozilla {
+
+namespace dom {
+class AbstractRange;
+}
+
+class FilteredContentIterator final {
+ public:
+  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(FilteredContentIterator)
+  NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(FilteredContentIterator)
+
+  explicit FilteredContentIterator(UniquePtr<nsComposeTxtSrvFilter> aFilter);
+
+  nsresult Init(nsINode* aRoot);
+  nsresult Init(const dom::AbstractRange* aAbstractRange);
+  nsresult Init(nsINode* aStartContainer, uint32_t aStartOffset,
+                nsINode* aEndContainer, uint32_t aEndOffset);
+  nsresult Init(const RawRangeBoundary& aStartBoundary,
+                const RawRangeBoundary& aEndBoundary);
+  void First();
+  void Last();
+  void Next();
+  void Prev();
+  nsINode* GetCurrentNode();
+  bool IsDone();
+  nsresult PositionAt(nsINode* aCurNode);
+
+  /* Helpers */
+  bool DidSkip() { return mDidSkip; }
+  void ClearDidSkip() { mDidSkip = false; }
+
+ protected:
+  FilteredContentIterator()
+      : mDidSkip(false), mIsOutOfRange(false), mDirection{eDirNotSet} {}
+
+  virtual ~FilteredContentIterator();
+
+  /**
+   * Callers must guarantee that mRange isn't nullptr and it's positioned.
+   */
+  nsresult InitWithRange();
+
+  // enum to give us the direction
+  typedef enum { eDirNotSet, eForward, eBackward } eDirectionType;
+  nsresult AdvanceNode(nsINode* aNode, nsINode*& aNewNode, eDirectionType aDir);
+  void CheckAdvNode(nsINode* aNode, bool& aDidSkip, eDirectionType aDir);
+  nsresult SwitchDirections(bool aChangeToForward);
+
+  ContentIteratorBase* MOZ_NON_OWNING_REF mCurrentIterator;
+  PostContentIterator mPostIterator;
+  PreContentIterator mPreIterator;
+
+  UniquePtr<nsComposeTxtSrvFilter> mFilter;
+  RefPtr<nsRange> mRange;
+  bool mDidSkip;
+  bool mIsOutOfRange;
+  eDirectionType mDirection;
+};
+
+}  // namespace mozilla
+
+#endif  // #ifndef FilteredContentIterator_h