The Tor Browser / file comparison
comparison: editor/libeditor/text/nsTextEditRulesBidi.cpp
editor/libeditor/text/nsTextEditRulesBidi.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:00cc75eb18ed |
|---|---|
| 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 #include "nsAutoPtr.h" | |
| 7 #include "nsCOMPtr.h" | |
| 8 #include "nsDebug.h" | |
| 9 #include "nsError.h" | |
| 10 #include "nsFrameSelection.h" | |
| 11 #include "nsIContent.h" | |
| 12 #include "nsIDOMNode.h" | |
| 13 #include "nsIEditor.h" | |
| 14 #include "nsIPresShell.h" | |
| 15 #include "mozilla/dom/Selection.h" | |
| 16 #include "nsISelectionPrivate.h" | |
| 17 #include "nsISupportsImpl.h" | |
| 18 #include "nsPlaintextEditor.h" | |
| 19 #include "nsPresContext.h" | |
| 20 #include "nsTextEditRules.h" | |
| 21 #include "nscore.h" | |
| 22 | |
| 23 using namespace mozilla; | |
| 24 using namespace mozilla::dom; | |
| 25 | |
| 26 // Test for distance between caret and text that will be deleted | |
| 27 nsresult | |
| 28 nsTextEditRules::CheckBidiLevelForDeletion(nsISelection *aSelection, | |
| 29 nsIDOMNode *aSelNode, | |
| 30 int32_t aSelOffset, | |
| 31 nsIEditor::EDirection aAction, | |
| 32 bool *aCancel) | |
| 33 { | |
| 34 NS_ENSURE_ARG_POINTER(aCancel); | |
| 35 *aCancel = false; | |
| 36 | |
| 37 nsCOMPtr<nsIPresShell> shell = mEditor->GetPresShell(); | |
| 38 NS_ENSURE_TRUE(shell, NS_ERROR_NOT_INITIALIZED); | |
| 39 | |
| 40 nsPresContext *context = shell->GetPresContext(); | |
| 41 NS_ENSURE_TRUE(context, NS_ERROR_NULL_POINTER); | |
| 42 | |
| 43 if (!context->BidiEnabled()) | |
| 44 return NS_OK; | |
| 45 | |
| 46 nsCOMPtr<nsIContent> content = do_QueryInterface(aSelNode); | |
| 47 NS_ENSURE_TRUE(content, NS_ERROR_NULL_POINTER); | |
| 48 | |
| 49 uint8_t levelBefore; | |
| 50 uint8_t levelAfter; | |
| 51 nsRefPtr<nsFrameSelection> frameSelection = | |
| 52 static_cast<Selection*>(aSelection)->GetFrameSelection(); | |
| 53 NS_ENSURE_TRUE(frameSelection, NS_ERROR_NULL_POINTER); | |
| 54 | |
| 55 nsPrevNextBidiLevels levels = frameSelection-> | |
| 56 GetPrevNextBidiLevels(content, aSelOffset, true); | |
| 57 | |
| 58 levelBefore = levels.mLevelBefore; | |
| 59 levelAfter = levels.mLevelAfter; | |
| 60 | |
| 61 uint8_t currentCaretLevel = frameSelection->GetCaretBidiLevel(); | |
| 62 | |
| 63 uint8_t levelOfDeletion; | |
| 64 levelOfDeletion = | |
| 65 (nsIEditor::eNext==aAction || nsIEditor::eNextWord==aAction) ? | |
| 66 levelAfter : levelBefore; | |
| 67 | |
| 68 if (currentCaretLevel == levelOfDeletion) | |
| 69 ; // perform the deletion | |
| 70 else | |
| 71 { | |
| 72 if (mDeleteBidiImmediately || levelBefore == levelAfter) | |
| 73 ; // perform the deletion | |
| 74 else | |
| 75 *aCancel = true; | |
| 76 | |
| 77 // Set the bidi level of the caret to that of the | |
| 78 // character that will be (or would have been) deleted | |
| 79 frameSelection->SetCaretBidiLevel(levelOfDeletion); | |
| 80 } | |
| 81 return NS_OK; | |
| 82 } | |
| 83 |
