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37 :
38 : #ifndef DeleteRangeTxn_h__
39 : #define DeleteRangeTxn_h__
40 :
41 : #include "EditAggregateTxn.h"
42 : #include "nsIDOMNode.h"
43 : #include "nsIDOMRange.h"
44 : #include "nsIEditor.h"
45 : #include "nsCOMPtr.h"
46 :
47 : class nsIDOMRange;
48 : class nsIEditor;
49 : class nsRangeUpdater;
50 :
51 : /**
52 : * A transaction that deletes an entire range in the content tree
53 : */
54 : class DeleteRangeTxn : public EditAggregateTxn
55 0 : {
56 : public:
57 : /** initialize the transaction.
58 : * @param aEditor the object providing basic editing operations
59 : * @param aRange the range to delete
60 : */
61 : NS_IMETHOD Init(nsIEditor *aEditor,
62 : nsIDOMRange *aRange,
63 : nsRangeUpdater *aRangeUpdater);
64 :
65 : DeleteRangeTxn();
66 :
67 1464 : NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTxn, EditAggregateTxn)
68 : NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
69 :
70 : NS_DECL_EDITTXN
71 :
72 : NS_IMETHOD RedoTransaction();
73 :
74 : protected:
75 :
76 : NS_IMETHOD CreateTxnsToDeleteBetween(nsIDOMNode *aStartParent,
77 : PRUint32 aStartOffset,
78 : PRUint32 aEndOffset);
79 :
80 : NS_IMETHOD CreateTxnsToDeleteNodesBetween();
81 :
82 : NS_IMETHOD CreateTxnsToDeleteContent(nsIDOMNode *aParent,
83 : PRUint32 aOffset,
84 : nsIEditor::EDirection aAction);
85 :
86 : protected:
87 :
88 : /** p1 in the range */
89 : nsCOMPtr<nsIDOMRange> mRange; // is this really an owning ptr?
90 :
91 : /** p1 in the range */
92 : nsCOMPtr<nsIDOMNode> mStartParent;
93 :
94 : /** p1 offset */
95 : PRInt32 mStartOffset;
96 :
97 : /** p2 in the range */
98 : nsCOMPtr<nsIDOMNode> mEndParent;
99 :
100 : /** the closest common parent of p1 and p2 */
101 : nsCOMPtr<nsIDOMNode> mCommonParent;
102 :
103 : /** p2 offset */
104 : PRInt32 mEndOffset;
105 :
106 : /** the editor for this transaction */
107 : nsIEditor* mEditor;
108 :
109 : /** range updater object */
110 : nsRangeUpdater *mRangeUpdater;
111 : };
112 :
113 : #endif
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