The Tor Browser / file comparison
comparison: editor/libeditor/base/ChangeAttributeTxn.cpp
editor/libeditor/base/ChangeAttributeTxn.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
inserted
replaced
| -1:000000000000 | 0:5400a095f28a |
|---|---|
| 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 "ChangeAttributeTxn.h" | |
| 7 #include "nsAString.h" | |
| 8 #include "nsDebug.h" // for NS_ASSERTION | |
| 9 #include "nsError.h" // for NS_ERROR_NOT_INITIALIZED, etc | |
| 10 #include "nsIDOMElement.h" // for nsIDOMElement | |
| 11 #include "nsIEditor.h" // for nsIEditor | |
| 12 #include "nsString.h" // for nsString | |
| 13 | |
| 14 ChangeAttributeTxn::ChangeAttributeTxn() | |
| 15 : EditTxn() | |
| 16 { | |
| 17 } | |
| 18 | |
| 19 NS_IMPL_CYCLE_COLLECTION_INHERITED(ChangeAttributeTxn, EditTxn, | |
| 20 mElement) | |
| 21 | |
| 22 NS_IMPL_ADDREF_INHERITED(ChangeAttributeTxn, EditTxn) | |
| 23 NS_IMPL_RELEASE_INHERITED(ChangeAttributeTxn, EditTxn) | |
| 24 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ChangeAttributeTxn) | |
| 25 NS_INTERFACE_MAP_END_INHERITING(EditTxn) | |
| 26 | |
| 27 NS_IMETHODIMP ChangeAttributeTxn::Init(nsIEditor *aEditor, | |
| 28 nsIDOMElement *aElement, | |
| 29 const nsAString& aAttribute, | |
| 30 const nsAString& aValue, | |
| 31 bool aRemoveAttribute) | |
| 32 { | |
| 33 NS_ASSERTION(aEditor && aElement, "bad arg"); | |
| 34 if (!aEditor || !aElement) { return NS_ERROR_NULL_POINTER; } | |
| 35 | |
| 36 mEditor = aEditor; | |
| 37 mElement = do_QueryInterface(aElement); | |
| 38 mAttribute = aAttribute; | |
| 39 mValue = aValue; | |
| 40 mRemoveAttribute = aRemoveAttribute; | |
| 41 mAttributeWasSet=false; | |
| 42 mUndoValue.Truncate(); | |
| 43 return NS_OK; | |
| 44 } | |
| 45 | |
| 46 NS_IMETHODIMP ChangeAttributeTxn::DoTransaction(void) | |
| 47 { | |
| 48 NS_ASSERTION(mEditor && mElement, "bad state"); | |
| 49 if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; } | |
| 50 | |
| 51 // need to get the current value of the attribute and save it, and set mAttributeWasSet | |
| 52 nsresult result = mEditor->GetAttributeValue(mElement, mAttribute, mUndoValue, &mAttributeWasSet); | |
| 53 // XXX: hack until attribute-was-set code is implemented | |
| 54 if (!mUndoValue.IsEmpty()) | |
| 55 mAttributeWasSet = true; | |
| 56 // XXX: end hack | |
| 57 | |
| 58 // now set the attribute to the new value | |
| 59 if (!mRemoveAttribute) | |
| 60 result = mElement->SetAttribute(mAttribute, mValue); | |
| 61 else | |
| 62 result = mElement->RemoveAttribute(mAttribute); | |
| 63 | |
| 64 return result; | |
| 65 } | |
| 66 | |
| 67 NS_IMETHODIMP ChangeAttributeTxn::UndoTransaction(void) | |
| 68 { | |
| 69 NS_ASSERTION(mEditor && mElement, "bad state"); | |
| 70 if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; } | |
| 71 | |
| 72 nsresult result; | |
| 73 if (mAttributeWasSet) | |
| 74 result = mElement->SetAttribute(mAttribute, mUndoValue); | |
| 75 else | |
| 76 result = mElement->RemoveAttribute(mAttribute); | |
| 77 | |
| 78 return result; | |
| 79 } | |
| 80 | |
| 81 NS_IMETHODIMP ChangeAttributeTxn::RedoTransaction(void) | |
| 82 { | |
| 83 NS_ASSERTION(mEditor && mElement, "bad state"); | |
| 84 if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; } | |
| 85 | |
| 86 nsresult result; | |
| 87 if (!mRemoveAttribute) | |
| 88 result = mElement->SetAttribute(mAttribute, mValue); | |
| 89 else | |
| 90 result = mElement->RemoveAttribute(mAttribute); | |
| 91 | |
| 92 return result; | |
| 93 } | |
| 94 | |
| 95 NS_IMETHODIMP ChangeAttributeTxn::GetTxnDescription(nsAString& aString) | |
| 96 { | |
| 97 aString.AssignLiteral("ChangeAttributeTxn: [mRemoveAttribute == "); | |
| 98 | |
| 99 if (!mRemoveAttribute) | |
| 100 aString.AppendLiteral("false] "); | |
| 101 else | |
| 102 aString.AppendLiteral("true] "); | |
| 103 aString += mAttribute; | |
| 104 return NS_OK; | |
| 105 } |
