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37 :
38 : #ifndef nsFilteredContentIterator_h__
39 : #define nsFilteredContentIterator_h__
40 :
41 : #include "nsIContentIterator.h"
42 : #include "nsCOMPtr.h"
43 : #include "nsIAtom.h"
44 : #include "nsITextServicesFilter.h"
45 : #include "nsRange.h"
46 : #include "nsCycleCollectionParticipant.h"
47 :
48 : /**
49 : *
50 : */
51 : class nsFilteredContentIterator : public nsIContentIterator
52 : {
53 : public:
54 :
55 : // nsISupports interface...
56 0 : NS_DECL_CYCLE_COLLECTING_ISUPPORTS
57 1464 : NS_DECL_CYCLE_COLLECTION_CLASS(nsFilteredContentIterator)
58 :
59 : nsFilteredContentIterator(nsITextServicesFilter* aFilter);
60 :
61 : virtual ~nsFilteredContentIterator();
62 :
63 : /* nsIContentIterator */
64 : virtual nsresult Init(nsINode* aRoot);
65 : virtual nsresult Init(nsIDOMRange* aRange);
66 : virtual void First();
67 : virtual void Last();
68 : virtual void Next();
69 : virtual void Prev();
70 : virtual nsINode *GetCurrentNode();
71 : virtual bool IsDone();
72 : virtual nsresult PositionAt(nsINode* aCurNode);
73 :
74 : /* Helpers */
75 0 : bool DidSkip() { return mDidSkip; }
76 0 : void ClearDidSkip() { mDidSkip = false; }
77 :
78 : protected:
79 : nsFilteredContentIterator() { }
80 :
81 : // enum to give us the direction
82 : typedef enum {eDirNotSet, eForward, eBackward} eDirectionType;
83 : nsresult AdvanceNode(nsIDOMNode* aNode, nsIDOMNode*& aNewNode, eDirectionType aDir);
84 : void CheckAdvNode(nsIDOMNode* aNode, bool& aDidSkip, eDirectionType aDir);
85 : nsresult SwitchDirections(bool aChangeToForward);
86 :
87 : nsCOMPtr<nsIContentIterator> mCurrentIterator;
88 : nsCOMPtr<nsIContentIterator> mIterator;
89 : nsCOMPtr<nsIContentIterator> mPreIterator;
90 :
91 : nsCOMPtr<nsIAtom> mBlockQuoteAtom;
92 : nsCOMPtr<nsIAtom> mScriptAtom;
93 : nsCOMPtr<nsIAtom> mTextAreaAtom;
94 : nsCOMPtr<nsIAtom> mSelectAreaAtom;
95 : nsCOMPtr<nsIAtom> mMapAtom;
96 :
97 : nsCOMPtr<nsITextServicesFilter> mFilter;
98 : nsCOMPtr<nsIDOMRange> mRange;
99 : bool mDidSkip;
100 : bool mIsOutOfRange;
101 : eDirectionType mDirection;
102 : };
103 :
104 : #endif
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