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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 nsFilteredContentIterator_h__
#define nsFilteredContentIterator_h__
#include "nsCOMPtr.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIContentIterator.h"
#include "nsISupportsImpl.h"
#include "nscore.h"
class nsIAtom;
class nsIDOMNode;
class nsIDOMRange;
class nsINode;
class nsITextServicesFilter;
class nsRange;
class nsFilteredContentIterator final : public nsIContentIterator
{
public:
// nsISupports interface...
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS(nsFilteredContentIterator)
explicit nsFilteredContentIterator(nsITextServicesFilter* aFilter);
/* nsIContentIterator */
virtual nsresult Init(nsINode* aRoot) override;
virtual nsresult Init(nsIDOMRange* aRange) override;
virtual void First() override;
virtual void Last() override;
virtual void Next() override;
virtual void Prev() override;
virtual nsINode *GetCurrentNode() override;
virtual bool IsDone() override;
virtual nsresult PositionAt(nsINode* aCurNode) override;
/* Helpers */
bool DidSkip() { return mDidSkip; }
void ClearDidSkip() { mDidSkip = false; }
protected:
nsFilteredContentIterator() : mDidSkip(false), mIsOutOfRange(false) { }
virtual ~nsFilteredContentIterator();
// enum to give us the direction
typedef enum {eDirNotSet, eForward, eBackward} eDirectionType;
nsresult AdvanceNode(nsIDOMNode* aNode, nsIDOMNode*& aNewNode, eDirectionType aDir);
void CheckAdvNode(nsIDOMNode* aNode, bool& aDidSkip, eDirectionType aDir);
nsresult SwitchDirections(bool aChangeToForward);
nsCOMPtr<nsIContentIterator> mCurrentIterator;
nsCOMPtr<nsIContentIterator> mIterator;
nsCOMPtr<nsIContentIterator> mPreIterator;
nsCOMPtr<nsIAtom> mBlockQuoteAtom;
nsCOMPtr<nsIAtom> mScriptAtom;
nsCOMPtr<nsIAtom> mTextAreaAtom;
nsCOMPtr<nsIAtom> mSelectAreaAtom;
nsCOMPtr<nsIAtom> mMapAtom;
nsCOMPtr<nsITextServicesFilter> mFilter;
RefPtr<nsRange> mRange;
bool mDidSkip;
bool mIsOutOfRange;
eDirectionType mDirection;
};
#endif
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