The Tor Browser / file comparison
comparison: editor/libeditor/base/SplitElementTxn.h
editor/libeditor/base/SplitElementTxn.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:8fe5f0f7eb9e |
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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 SplitElementTxn_h__ | |
| 7 #define SplitElementTxn_h__ | |
| 8 | |
| 9 #include "EditTxn.h" // for EditTxn, NS_DECL_EDITTXN | |
| 10 #include "nsCOMPtr.h" // for nsCOMPtr | |
| 11 #include "nsCycleCollectionParticipant.h" | |
| 12 #include "nsIDOMNode.h" // for nsIDOMNode | |
| 13 #include "nsISupportsImpl.h" // for NS_DECL_ISUPPORTS_INHERITED | |
| 14 #include "nscore.h" // for NS_IMETHOD | |
| 15 | |
| 16 class nsEditor; | |
| 17 | |
| 18 /** | |
| 19 * A transaction that splits an element E into two identical nodes, E1 and E2 | |
| 20 * with the children of E divided between E1 and E2. | |
| 21 */ | |
| 22 class SplitElementTxn : public EditTxn | |
| 23 { | |
| 24 public: | |
| 25 /** initialize the transaction. | |
| 26 * @param aEditor the provider of core editing operations | |
| 27 * @param aNode the node to split | |
| 28 * @param aOffset the location within aNode to do the split. | |
| 29 * aOffset may refer to children of aNode, or content of aNode. | |
| 30 * The left node will have child|content 0..aOffset-1. | |
| 31 */ | |
| 32 NS_IMETHOD Init (nsEditor *aEditor, | |
| 33 nsIDOMNode *aNode, | |
| 34 int32_t aOffset); | |
| 35 | |
| 36 SplitElementTxn(); | |
| 37 | |
| 38 NS_DECL_ISUPPORTS_INHERITED | |
| 39 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SplitElementTxn, EditTxn) | |
| 40 | |
| 41 NS_DECL_EDITTXN | |
| 42 | |
| 43 NS_IMETHOD RedoTransaction(void); | |
| 44 | |
| 45 NS_IMETHOD GetNewNode(nsIDOMNode **aNewNode); | |
| 46 | |
| 47 protected: | |
| 48 | |
| 49 /** the element to operate upon */ | |
| 50 nsCOMPtr<nsIDOMNode> mExistingRightNode; | |
| 51 | |
| 52 /** the offset into mElement where the children of mElement are split.<BR> | |
| 53 * mOffset is the index of the first child in the right node. | |
| 54 * -1 means the new node gets no children. | |
| 55 */ | |
| 56 int32_t mOffset; | |
| 57 | |
| 58 /** the element we create when splitting mElement */ | |
| 59 nsCOMPtr<nsIDOMNode> mNewLeftNode; | |
| 60 | |
| 61 /** the parent shared by mExistingRightNode and mNewLeftNode */ | |
| 62 nsCOMPtr<nsIDOMNode> mParent; | |
| 63 nsEditor* mEditor; | |
| 64 }; | |
| 65 | |
| 66 #endif |
