editor/libeditor/base/JoinElementTxn.cpp@129ffea94266 (annotated)
editor/libeditor/base/JoinElementTxn.cpp
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
| 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 <stdio.h> // for printf |
| michael@0 | 7 | |
| michael@0 | 8 | #include "JoinElementTxn.h" |
| michael@0 | 9 | #include "nsAString.h" |
| michael@0 | 10 | #include "nsDebug.h" // for NS_ASSERTION, etc |
| michael@0 | 11 | #include "nsEditor.h" // for nsEditor |
| michael@0 | 12 | #include "nsError.h" // for NS_ERROR_NULL_POINTER, etc |
| michael@0 | 13 | #include "nsIDOMCharacterData.h" // for nsIDOMCharacterData |
| michael@0 | 14 | #include "nsIEditor.h" // for nsEditor::IsModifiableNode |
| michael@0 | 15 | #include "nsINode.h" // for nsINode |
| michael@0 | 16 | #include "nsISupportsImpl.h" // for EditTxn::QueryInterface, etc |
| michael@0 | 17 | |
| michael@0 | 18 | JoinElementTxn::JoinElementTxn() |
| michael@0 | 19 | : EditTxn() |
| michael@0 | 20 | { |
| michael@0 | 21 | } |
| michael@0 | 22 | |
| michael@0 | 23 | NS_IMPL_CYCLE_COLLECTION_INHERITED(JoinElementTxn, EditTxn, |
| michael@0 | 24 | mLeftNode, |
| michael@0 | 25 | mRightNode, |
| michael@0 | 26 | mParent) |
| michael@0 | 27 | |
| michael@0 | 28 | NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(JoinElementTxn) |
| michael@0 | 29 | NS_INTERFACE_MAP_END_INHERITING(EditTxn) |
| michael@0 | 30 | |
| michael@0 | 31 | NS_IMETHODIMP JoinElementTxn::Init(nsEditor *aEditor, |
| michael@0 | 32 | nsIDOMNode *aLeftNode, |
| michael@0 | 33 | nsIDOMNode *aRightNode) |
| michael@0 | 34 | { |
| michael@0 | 35 | NS_PRECONDITION((aEditor && aLeftNode && aRightNode), "null arg"); |
| michael@0 | 36 | if (!aEditor || !aLeftNode || !aRightNode) { return NS_ERROR_NULL_POINTER; } |
| michael@0 | 37 | mEditor = aEditor; |
| michael@0 | 38 | mLeftNode = do_QueryInterface(aLeftNode); |
| michael@0 | 39 | nsCOMPtr<nsIDOMNode>leftParent; |
| michael@0 | 40 | nsresult result = mLeftNode->GetParentNode(getter_AddRefs(leftParent)); |
| michael@0 | 41 | NS_ENSURE_SUCCESS(result, result); |
| michael@0 | 42 | if (!mEditor->IsModifiableNode(leftParent)) { |
| michael@0 | 43 | return NS_ERROR_FAILURE; |
| michael@0 | 44 | } |
| michael@0 | 45 | mRightNode = do_QueryInterface(aRightNode); |
| michael@0 | 46 | mOffset = 0; |
| michael@0 | 47 | return NS_OK; |
| michael@0 | 48 | } |
| michael@0 | 49 | |
| michael@0 | 50 | // After DoTransaction() and RedoTransaction(), the left node is removed from the content tree and right node remains. |
| michael@0 | 51 | NS_IMETHODIMP JoinElementTxn::DoTransaction(void) |
| michael@0 | 52 | { |
| michael@0 | 53 | NS_PRECONDITION((mEditor && mLeftNode && mRightNode), "null arg"); |
| michael@0 | 54 | if (!mEditor || !mLeftNode || !mRightNode) { return NS_ERROR_NOT_INITIALIZED; } |
| michael@0 | 55 | |
| michael@0 | 56 | // get the parent node |
| michael@0 | 57 | nsCOMPtr<nsIDOMNode> leftParent; |
| michael@0 | 58 | mLeftNode->GetParentNode(getter_AddRefs(leftParent)); |
| michael@0 | 59 | NS_ENSURE_TRUE(leftParent, NS_ERROR_NULL_POINTER); |
| michael@0 | 60 | |
| michael@0 | 61 | // verify that mLeftNode and mRightNode have the same parent |
| michael@0 | 62 | nsCOMPtr<nsIDOMNode> rightParent; |
| michael@0 | 63 | mRightNode->GetParentNode(getter_AddRefs(rightParent)); |
| michael@0 | 64 | NS_ENSURE_TRUE(rightParent, NS_ERROR_NULL_POINTER); |
| michael@0 | 65 | |
| michael@0 | 66 | if (leftParent != rightParent) { |
| michael@0 | 67 | NS_ASSERTION(false, "2 nodes do not have same parent"); |
| michael@0 | 68 | return NS_ERROR_INVALID_ARG; |
| michael@0 | 69 | } |
| michael@0 | 70 | |
| michael@0 | 71 | // set this instance mParent. |
| michael@0 | 72 | // Other methods will see a non-null mParent and know all is well |
| michael@0 | 73 | mParent = leftParent; |
| michael@0 | 74 | nsCOMPtr<nsINode> leftNode = do_QueryInterface(mLeftNode); |
| michael@0 | 75 | nsCOMPtr<nsINode> rightNode = do_QueryInterface(mRightNode); |
| michael@0 | 76 | nsCOMPtr<nsINode> parent = do_QueryInterface(mParent); |
| michael@0 | 77 | NS_ENSURE_TRUE(leftNode && rightNode && parent, NS_ERROR_FAILURE); |
| michael@0 | 78 | mOffset = leftNode->Length(); |
| michael@0 | 79 | |
| michael@0 | 80 | return mEditor->JoinNodesImpl(rightNode, leftNode, parent); |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | //XXX: what if instead of split, we just deleted the unneeded children of mRight |
| michael@0 | 84 | // and re-inserted mLeft? |
| michael@0 | 85 | NS_IMETHODIMP JoinElementTxn::UndoTransaction(void) |
| michael@0 | 86 | { |
| michael@0 | 87 | NS_ASSERTION(mRightNode && mLeftNode && mParent, "bad state"); |
| michael@0 | 88 | if (!mRightNode || !mLeftNode || !mParent) { return NS_ERROR_NOT_INITIALIZED; } |
| michael@0 | 89 | nsresult result; |
| michael@0 | 90 | nsCOMPtr<nsIDOMNode>resultNode; |
| michael@0 | 91 | // first, massage the existing node so it is in its post-split state |
| michael@0 | 92 | nsCOMPtr<nsIDOMCharacterData>rightNodeAsText = do_QueryInterface(mRightNode); |
| michael@0 | 93 | if (rightNodeAsText) |
| michael@0 | 94 | { |
| michael@0 | 95 | result = rightNodeAsText->DeleteData(0, mOffset); |
| michael@0 | 96 | } |
| michael@0 | 97 | else |
| michael@0 | 98 | { |
| michael@0 | 99 | nsCOMPtr<nsIDOMNode>child; |
| michael@0 | 100 | result = mRightNode->GetFirstChild(getter_AddRefs(child)); |
| michael@0 | 101 | nsCOMPtr<nsIDOMNode>nextSibling; |
| michael@0 | 102 | uint32_t i; |
| michael@0 | 103 | for (i=0; i<mOffset; i++) |
| michael@0 | 104 | { |
| michael@0 | 105 | if (NS_FAILED(result)) {return result;} |
| michael@0 | 106 | if (!child) {return NS_ERROR_NULL_POINTER;} |
| michael@0 | 107 | child->GetNextSibling(getter_AddRefs(nextSibling)); |
| michael@0 | 108 | result = mLeftNode->AppendChild(child, getter_AddRefs(resultNode)); |
| michael@0 | 109 | child = do_QueryInterface(nextSibling); |
| michael@0 | 110 | } |
| michael@0 | 111 | } |
| michael@0 | 112 | // second, re-insert the left node into the tree |
| michael@0 | 113 | result = mParent->InsertBefore(mLeftNode, mRightNode, getter_AddRefs(resultNode)); |
| michael@0 | 114 | return result; |
| michael@0 | 115 | |
| michael@0 | 116 | } |
| michael@0 | 117 | |
| michael@0 | 118 | NS_IMETHODIMP JoinElementTxn::GetTxnDescription(nsAString& aString) |
| michael@0 | 119 | { |
| michael@0 | 120 | aString.AssignLiteral("JoinElementTxn"); |
| michael@0 | 121 | return NS_OK; |
| michael@0 | 122 | } |
