The Tor Browser / file comparison
comparison: editor/libeditor/base/CreateElementTxn.cpp
editor/libeditor/base/CreateElementTxn.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
inserted
replaced
| -1:000000000000 | 0:46fc04e597aa |
|---|---|
| 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 <stdio.h> | |
| 7 | |
| 8 #include "CreateElementTxn.h" | |
| 9 #include "mozilla/dom/Element.h" | |
| 10 #include "nsAlgorithm.h" | |
| 11 #include "nsDebug.h" | |
| 12 #include "nsEditor.h" | |
| 13 #include "nsError.h" | |
| 14 #include "nsIContent.h" | |
| 15 #include "nsIDOMCharacterData.h" | |
| 16 #include "nsIEditor.h" | |
| 17 #include "nsINode.h" | |
| 18 #include "nsISelection.h" | |
| 19 #include "nsISupportsUtils.h" | |
| 20 #include "nsMemory.h" | |
| 21 #include "nsReadableUtils.h" | |
| 22 #include "nsStringFwd.h" | |
| 23 #include "nsString.h" | |
| 24 #include "nsAString.h" | |
| 25 #include <algorithm> | |
| 26 | |
| 27 using namespace mozilla; | |
| 28 | |
| 29 CreateElementTxn::CreateElementTxn() | |
| 30 : EditTxn() | |
| 31 { | |
| 32 } | |
| 33 | |
| 34 NS_IMPL_CYCLE_COLLECTION_INHERITED(CreateElementTxn, EditTxn, | |
| 35 mParent, | |
| 36 mNewNode, | |
| 37 mRefNode) | |
| 38 | |
| 39 NS_IMPL_ADDREF_INHERITED(CreateElementTxn, EditTxn) | |
| 40 NS_IMPL_RELEASE_INHERITED(CreateElementTxn, EditTxn) | |
| 41 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CreateElementTxn) | |
| 42 NS_INTERFACE_MAP_END_INHERITING(EditTxn) | |
| 43 NS_IMETHODIMP CreateElementTxn::Init(nsEditor *aEditor, | |
| 44 const nsAString &aTag, | |
| 45 nsIDOMNode *aParent, | |
| 46 uint32_t aOffsetInParent) | |
| 47 { | |
| 48 NS_ASSERTION(aEditor&&aParent, "null args"); | |
| 49 if (!aEditor || !aParent) { return NS_ERROR_NULL_POINTER; } | |
| 50 | |
| 51 mEditor = aEditor; | |
| 52 mTag = aTag; | |
| 53 mParent = do_QueryInterface(aParent); | |
| 54 mOffsetInParent = aOffsetInParent; | |
| 55 return NS_OK; | |
| 56 } | |
| 57 | |
| 58 | |
| 59 NS_IMETHODIMP CreateElementTxn::DoTransaction(void) | |
| 60 { | |
| 61 NS_ASSERTION(mEditor && mParent, "bad state"); | |
| 62 NS_ENSURE_TRUE(mEditor && mParent, NS_ERROR_NOT_INITIALIZED); | |
| 63 | |
| 64 nsCOMPtr<dom::Element> newContent; | |
| 65 | |
| 66 //new call to use instead to get proper HTML element, bug# 39919 | |
| 67 nsresult result = mEditor->CreateHTMLContent(mTag, getter_AddRefs(newContent)); | |
| 68 NS_ENSURE_SUCCESS(result, result); | |
| 69 NS_ENSURE_STATE(newContent); | |
| 70 | |
| 71 mNewNode = newContent->AsDOMNode(); | |
| 72 // Try to insert formatting whitespace for the new node: | |
| 73 mEditor->MarkNodeDirty(mNewNode); | |
| 74 | |
| 75 // insert the new node | |
| 76 if (CreateElementTxn::eAppend == int32_t(mOffsetInParent)) { | |
| 77 nsCOMPtr<nsIDOMNode> resultNode; | |
| 78 return mParent->AppendChild(mNewNode, getter_AddRefs(resultNode)); | |
| 79 } | |
| 80 | |
| 81 nsCOMPtr<nsINode> parent = do_QueryInterface(mParent); | |
| 82 NS_ENSURE_STATE(parent); | |
| 83 | |
| 84 mOffsetInParent = XPCOM_MIN(mOffsetInParent, parent->GetChildCount()); | |
| 85 | |
| 86 // note, it's ok for mRefNode to be null. that means append | |
| 87 nsIContent* refNode = parent->GetChildAt(mOffsetInParent); | |
| 88 mRefNode = refNode ? refNode->AsDOMNode() : nullptr; | |
| 89 | |
| 90 nsCOMPtr<nsIDOMNode> resultNode; | |
| 91 result = mParent->InsertBefore(mNewNode, mRefNode, getter_AddRefs(resultNode)); | |
| 92 NS_ENSURE_SUCCESS(result, result); | |
| 93 | |
| 94 // only set selection to insertion point if editor gives permission | |
| 95 bool bAdjustSelection; | |
| 96 mEditor->ShouldTxnSetSelection(&bAdjustSelection); | |
| 97 if (!bAdjustSelection) { | |
| 98 // do nothing - dom range gravity will adjust selection | |
| 99 return NS_OK; | |
| 100 } | |
| 101 | |
| 102 nsCOMPtr<nsISelection> selection; | |
| 103 result = mEditor->GetSelection(getter_AddRefs(selection)); | |
| 104 NS_ENSURE_SUCCESS(result, result); | |
| 105 NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER); | |
| 106 | |
| 107 nsCOMPtr<nsIContent> parentContent = do_QueryInterface(mParent); | |
| 108 NS_ENSURE_STATE(parentContent); | |
| 109 | |
| 110 result = selection->CollapseNative(parentContent, | |
| 111 parentContent->IndexOf(newContent) + 1); | |
| 112 NS_ASSERTION((NS_SUCCEEDED(result)), "selection could not be collapsed after insert."); | |
| 113 return result; | |
| 114 } | |
| 115 | |
| 116 NS_IMETHODIMP CreateElementTxn::UndoTransaction(void) | |
| 117 { | |
| 118 NS_ASSERTION(mEditor && mParent, "bad state"); | |
| 119 NS_ENSURE_TRUE(mEditor && mParent, NS_ERROR_NOT_INITIALIZED); | |
| 120 | |
| 121 nsCOMPtr<nsIDOMNode> resultNode; | |
| 122 return mParent->RemoveChild(mNewNode, getter_AddRefs(resultNode)); | |
| 123 } | |
| 124 | |
| 125 NS_IMETHODIMP CreateElementTxn::RedoTransaction(void) | |
| 126 { | |
| 127 NS_ASSERTION(mEditor && mParent, "bad state"); | |
| 128 NS_ENSURE_TRUE(mEditor && mParent, NS_ERROR_NOT_INITIALIZED); | |
| 129 | |
| 130 // first, reset mNewNode so it has no attributes or content | |
| 131 nsCOMPtr<nsIDOMCharacterData>nodeAsText = do_QueryInterface(mNewNode); | |
| 132 if (nodeAsText) | |
| 133 { | |
| 134 nodeAsText->SetData(EmptyString()); | |
| 135 } | |
| 136 | |
| 137 // now, reinsert mNewNode | |
| 138 nsCOMPtr<nsIDOMNode> resultNode; | |
| 139 return mParent->InsertBefore(mNewNode, mRefNode, getter_AddRefs(resultNode)); | |
| 140 } | |
| 141 | |
| 142 NS_IMETHODIMP CreateElementTxn::GetTxnDescription(nsAString& aString) | |
| 143 { | |
| 144 aString.AssignLiteral("CreateElementTxn: "); | |
| 145 aString += mTag; | |
| 146 return NS_OK; | |
| 147 } | |
| 148 | |
| 149 NS_IMETHODIMP CreateElementTxn::GetNewNode(nsIDOMNode **aNewNode) | |
| 150 { | |
| 151 NS_ENSURE_TRUE(aNewNode, NS_ERROR_NULL_POINTER); | |
| 152 NS_ENSURE_TRUE(mNewNode, NS_ERROR_NOT_INITIALIZED); | |
| 153 *aNewNode = mNewNode; | |
| 154 NS_ADDREF(*aNewNode); | |
| 155 return NS_OK; | |
| 156 } |
