editor/libeditor/base/ChangeAttributeTxn.cpp@6474c204b198 (annotated)
editor/libeditor/base/ChangeAttributeTxn.cpp
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 | #include "ChangeAttributeTxn.h" |
| michael@0 | 7 | #include "nsAString.h" |
| michael@0 | 8 | #include "nsDebug.h" // for NS_ASSERTION |
| michael@0 | 9 | #include "nsError.h" // for NS_ERROR_NOT_INITIALIZED, etc |
| michael@0 | 10 | #include "nsIDOMElement.h" // for nsIDOMElement |
| michael@0 | 11 | #include "nsIEditor.h" // for nsIEditor |
| michael@0 | 12 | #include "nsString.h" // for nsString |
| michael@0 | 13 | |
| michael@0 | 14 | ChangeAttributeTxn::ChangeAttributeTxn() |
| michael@0 | 15 | : EditTxn() |
| michael@0 | 16 | { |
| michael@0 | 17 | } |
| michael@0 | 18 | |
| michael@0 | 19 | NS_IMPL_CYCLE_COLLECTION_INHERITED(ChangeAttributeTxn, EditTxn, |
| michael@0 | 20 | mElement) |
| michael@0 | 21 | |
| michael@0 | 22 | NS_IMPL_ADDREF_INHERITED(ChangeAttributeTxn, EditTxn) |
| michael@0 | 23 | NS_IMPL_RELEASE_INHERITED(ChangeAttributeTxn, EditTxn) |
| michael@0 | 24 | NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ChangeAttributeTxn) |
| michael@0 | 25 | NS_INTERFACE_MAP_END_INHERITING(EditTxn) |
| michael@0 | 26 | |
| michael@0 | 27 | NS_IMETHODIMP ChangeAttributeTxn::Init(nsIEditor *aEditor, |
| michael@0 | 28 | nsIDOMElement *aElement, |
| michael@0 | 29 | const nsAString& aAttribute, |
| michael@0 | 30 | const nsAString& aValue, |
| michael@0 | 31 | bool aRemoveAttribute) |
| michael@0 | 32 | { |
| michael@0 | 33 | NS_ASSERTION(aEditor && aElement, "bad arg"); |
| michael@0 | 34 | if (!aEditor || !aElement) { return NS_ERROR_NULL_POINTER; } |
| michael@0 | 35 | |
| michael@0 | 36 | mEditor = aEditor; |
| michael@0 | 37 | mElement = do_QueryInterface(aElement); |
| michael@0 | 38 | mAttribute = aAttribute; |
| michael@0 | 39 | mValue = aValue; |
| michael@0 | 40 | mRemoveAttribute = aRemoveAttribute; |
| michael@0 | 41 | mAttributeWasSet=false; |
| michael@0 | 42 | mUndoValue.Truncate(); |
| michael@0 | 43 | return NS_OK; |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | NS_IMETHODIMP ChangeAttributeTxn::DoTransaction(void) |
| michael@0 | 47 | { |
| michael@0 | 48 | NS_ASSERTION(mEditor && mElement, "bad state"); |
| michael@0 | 49 | if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; } |
| michael@0 | 50 | |
| michael@0 | 51 | // need to get the current value of the attribute and save it, and set mAttributeWasSet |
| michael@0 | 52 | nsresult result = mEditor->GetAttributeValue(mElement, mAttribute, mUndoValue, &mAttributeWasSet); |
| michael@0 | 53 | // XXX: hack until attribute-was-set code is implemented |
| michael@0 | 54 | if (!mUndoValue.IsEmpty()) |
| michael@0 | 55 | mAttributeWasSet = true; |
| michael@0 | 56 | // XXX: end hack |
| michael@0 | 57 | |
| michael@0 | 58 | // now set the attribute to the new value |
| michael@0 | 59 | if (!mRemoveAttribute) |
| michael@0 | 60 | result = mElement->SetAttribute(mAttribute, mValue); |
| michael@0 | 61 | else |
| michael@0 | 62 | result = mElement->RemoveAttribute(mAttribute); |
| michael@0 | 63 | |
| michael@0 | 64 | return result; |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | NS_IMETHODIMP ChangeAttributeTxn::UndoTransaction(void) |
| michael@0 | 68 | { |
| michael@0 | 69 | NS_ASSERTION(mEditor && mElement, "bad state"); |
| michael@0 | 70 | if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; } |
| michael@0 | 71 | |
| michael@0 | 72 | nsresult result; |
| michael@0 | 73 | if (mAttributeWasSet) |
| michael@0 | 74 | result = mElement->SetAttribute(mAttribute, mUndoValue); |
| michael@0 | 75 | else |
| michael@0 | 76 | result = mElement->RemoveAttribute(mAttribute); |
| michael@0 | 77 | |
| michael@0 | 78 | return result; |
| michael@0 | 79 | } |
| michael@0 | 80 | |
| michael@0 | 81 | NS_IMETHODIMP ChangeAttributeTxn::RedoTransaction(void) |
| michael@0 | 82 | { |
| michael@0 | 83 | NS_ASSERTION(mEditor && mElement, "bad state"); |
| michael@0 | 84 | if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; } |
| michael@0 | 85 | |
| michael@0 | 86 | nsresult result; |
| michael@0 | 87 | if (!mRemoveAttribute) |
| michael@0 | 88 | result = mElement->SetAttribute(mAttribute, mValue); |
| michael@0 | 89 | else |
| michael@0 | 90 | result = mElement->RemoveAttribute(mAttribute); |
| michael@0 | 91 | |
| michael@0 | 92 | return result; |
| michael@0 | 93 | } |
| michael@0 | 94 | |
| michael@0 | 95 | NS_IMETHODIMP ChangeAttributeTxn::GetTxnDescription(nsAString& aString) |
| michael@0 | 96 | { |
| michael@0 | 97 | aString.AssignLiteral("ChangeAttributeTxn: [mRemoveAttribute == "); |
| michael@0 | 98 | |
| michael@0 | 99 | if (!mRemoveAttribute) |
| michael@0 | 100 | aString.AppendLiteral("false] "); |
| michael@0 | 101 | else |
| michael@0 | 102 | aString.AppendLiteral("true] "); |
| michael@0 | 103 | aString += mAttribute; |
| michael@0 | 104 | return NS_OK; |
| michael@0 | 105 | } |
