editor/libeditor/base/PlaceholderTxn.h@6474c204b198 (annotated)
editor/libeditor/base/PlaceholderTxn.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef AggregatePlaceholderTxn_h__ |
| michael@0 | 7 | #define AggregatePlaceholderTxn_h__ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "EditAggregateTxn.h" |
| michael@0 | 10 | #include "nsEditorUtils.h" |
| michael@0 | 11 | #include "nsIAbsorbingTransaction.h" |
| michael@0 | 12 | #include "nsIDOMNode.h" |
| michael@0 | 13 | #include "nsCOMPtr.h" |
| michael@0 | 14 | #include "nsWeakPtr.h" |
| michael@0 | 15 | #include "nsWeakReference.h" |
| michael@0 | 16 | #include "nsAutoPtr.h" |
| michael@0 | 17 | |
| michael@0 | 18 | class nsHTMLEditor; |
| michael@0 | 19 | class IMETextTxn; |
| michael@0 | 20 | |
| michael@0 | 21 | /** |
| michael@0 | 22 | * An aggregate transaction that knows how to absorb all subsequent |
| michael@0 | 23 | * transactions with the same name. This transaction does not "Do" anything. |
| michael@0 | 24 | * But it absorbs other transactions via merge, and can undo/redo the |
| michael@0 | 25 | * transactions it has absorbed. |
| michael@0 | 26 | */ |
| michael@0 | 27 | |
| michael@0 | 28 | class PlaceholderTxn : public EditAggregateTxn, |
| michael@0 | 29 | public nsIAbsorbingTransaction, |
| michael@0 | 30 | public nsSupportsWeakReference |
| michael@0 | 31 | { |
| michael@0 | 32 | public: |
| michael@0 | 33 | NS_DECL_ISUPPORTS_INHERITED |
| michael@0 | 34 | |
| michael@0 | 35 | PlaceholderTxn(); |
| michael@0 | 36 | |
| michael@0 | 37 | NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(PlaceholderTxn, EditAggregateTxn) |
| michael@0 | 38 | // ------------ EditAggregateTxn ----------------------- |
| michael@0 | 39 | |
| michael@0 | 40 | NS_DECL_EDITTXN |
| michael@0 | 41 | |
| michael@0 | 42 | NS_IMETHOD RedoTransaction(); |
| michael@0 | 43 | NS_IMETHOD Merge(nsITransaction *aTransaction, bool *aDidMerge); |
| michael@0 | 44 | |
| michael@0 | 45 | // ------------ nsIAbsorbingTransaction ----------------------- |
| michael@0 | 46 | |
| michael@0 | 47 | NS_IMETHOD Init(nsIAtom* aName, nsSelectionState* aSelState, |
| michael@0 | 48 | nsEditor* aEditor); |
| michael@0 | 49 | |
| michael@0 | 50 | NS_IMETHOD GetTxnName(nsIAtom **aName); |
| michael@0 | 51 | |
| michael@0 | 52 | NS_IMETHOD StartSelectionEquals(nsSelectionState *aSelState, bool *aResult); |
| michael@0 | 53 | |
| michael@0 | 54 | NS_IMETHOD EndPlaceHolderBatch(); |
| michael@0 | 55 | |
| michael@0 | 56 | NS_IMETHOD ForwardEndBatchTo(nsIAbsorbingTransaction *aForwardingAddress); |
| michael@0 | 57 | |
| michael@0 | 58 | NS_IMETHOD Commit(); |
| michael@0 | 59 | |
| michael@0 | 60 | NS_IMETHOD RememberEndingSelection(); |
| michael@0 | 61 | |
| michael@0 | 62 | protected: |
| michael@0 | 63 | |
| michael@0 | 64 | /** the presentation shell, which we'll need to get the selection */ |
| michael@0 | 65 | bool mAbsorb; // do we auto absorb any and all transaction? |
| michael@0 | 66 | nsWeakPtr mForwarding; |
| michael@0 | 67 | IMETextTxn *mIMETextTxn; // first IME txn in this placeholder - used for IME merging |
| michael@0 | 68 | // non-owning for now - can't nsCOMPtr it due to broken transaction interfaces |
| michael@0 | 69 | bool mCommitted; // do we stop auto absorbing any matching placeholder txns? |
| michael@0 | 70 | // these next two members store the state of the selection in a safe way. |
| michael@0 | 71 | // selection at the start of the txn is stored, as is the selection at the end. |
| michael@0 | 72 | // This is so that UndoTransaction() and RedoTransaction() can restore the |
| michael@0 | 73 | // selection properly. |
| michael@0 | 74 | nsAutoPtr<nsSelectionState> mStartSel; // use a pointer because this is constructed before we exist |
| michael@0 | 75 | nsSelectionState mEndSel; |
| michael@0 | 76 | nsEditor* mEditor; /** the editor for this transaction */ |
| michael@0 | 77 | }; |
| michael@0 | 78 | |
| michael@0 | 79 | |
| michael@0 | 80 | #endif |
