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comparison: editor/libeditor/base/DeleteRangeTxn.h
editor/libeditor/base/DeleteRangeTxn.h
- changeset 0
- 6474c204b198
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef DeleteRangeTxn_h__ | |
| 7 #define DeleteRangeTxn_h__ | |
| 8 | |
| 9 #include "EditAggregateTxn.h" | |
| 10 #include "EditTxn.h" | |
| 11 #include "nsAutoPtr.h" | |
| 12 #include "nsCycleCollectionParticipant.h" | |
| 13 #include "nsID.h" | |
| 14 #include "nsIEditor.h" | |
| 15 #include "nsISupportsImpl.h" | |
| 16 #include "nsRange.h" | |
| 17 #include "nscore.h" | |
| 18 | |
| 19 class nsEditor; | |
| 20 class nsINode; | |
| 21 class nsRangeUpdater; | |
| 22 | |
| 23 /** | |
| 24 * A transaction that deletes an entire range in the content tree | |
| 25 */ | |
| 26 class DeleteRangeTxn : public EditAggregateTxn | |
| 27 { | |
| 28 public: | |
| 29 /** initialize the transaction. | |
| 30 * @param aEditor the object providing basic editing operations | |
| 31 * @param aRange the range to delete | |
| 32 */ | |
| 33 nsresult Init(nsEditor* aEditor, | |
| 34 nsRange* aRange, | |
| 35 nsRangeUpdater* aRangeUpdater); | |
| 36 | |
| 37 DeleteRangeTxn(); | |
| 38 | |
| 39 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteRangeTxn, EditAggregateTxn) | |
| 40 NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr); | |
| 41 | |
| 42 NS_DECL_EDITTXN | |
| 43 | |
| 44 NS_IMETHOD RedoTransaction(); | |
| 45 | |
| 46 virtual void LastRelease() | |
| 47 { | |
| 48 mRange = nullptr; | |
| 49 EditAggregateTxn::LastRelease(); | |
| 50 } | |
| 51 protected: | |
| 52 | |
| 53 nsresult CreateTxnsToDeleteBetween(nsINode* aNode, | |
| 54 int32_t aStartOffset, | |
| 55 int32_t aEndOffset); | |
| 56 | |
| 57 nsresult CreateTxnsToDeleteNodesBetween(); | |
| 58 | |
| 59 nsresult CreateTxnsToDeleteContent(nsINode* aParent, | |
| 60 int32_t aOffset, | |
| 61 nsIEditor::EDirection aAction); | |
| 62 | |
| 63 protected: | |
| 64 | |
| 65 /** p1 in the range */ | |
| 66 nsRefPtr<nsRange> mRange; | |
| 67 | |
| 68 /** the editor for this transaction */ | |
| 69 nsEditor* mEditor; | |
| 70 | |
| 71 /** range updater object */ | |
| 72 nsRangeUpdater* mRangeUpdater; | |
| 73 }; | |
| 74 | |
| 75 #endif |
