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/* -*- 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
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