1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/editor/libeditor/base/CreateElementTxn.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,156 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include <stdio.h>
1.10 +
1.11 +#include "CreateElementTxn.h"
1.12 +#include "mozilla/dom/Element.h"
1.13 +#include "nsAlgorithm.h"
1.14 +#include "nsDebug.h"
1.15 +#include "nsEditor.h"
1.16 +#include "nsError.h"
1.17 +#include "nsIContent.h"
1.18 +#include "nsIDOMCharacterData.h"
1.19 +#include "nsIEditor.h"
1.20 +#include "nsINode.h"
1.21 +#include "nsISelection.h"
1.22 +#include "nsISupportsUtils.h"
1.23 +#include "nsMemory.h"
1.24 +#include "nsReadableUtils.h"
1.25 +#include "nsStringFwd.h"
1.26 +#include "nsString.h"
1.27 +#include "nsAString.h"
1.28 +#include <algorithm>
1.29 +
1.30 +using namespace mozilla;
1.31 +
1.32 +CreateElementTxn::CreateElementTxn()
1.33 + : EditTxn()
1.34 +{
1.35 +}
1.36 +
1.37 +NS_IMPL_CYCLE_COLLECTION_INHERITED(CreateElementTxn, EditTxn,
1.38 + mParent,
1.39 + mNewNode,
1.40 + mRefNode)
1.41 +
1.42 +NS_IMPL_ADDREF_INHERITED(CreateElementTxn, EditTxn)
1.43 +NS_IMPL_RELEASE_INHERITED(CreateElementTxn, EditTxn)
1.44 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CreateElementTxn)
1.45 +NS_INTERFACE_MAP_END_INHERITING(EditTxn)
1.46 +NS_IMETHODIMP CreateElementTxn::Init(nsEditor *aEditor,
1.47 + const nsAString &aTag,
1.48 + nsIDOMNode *aParent,
1.49 + uint32_t aOffsetInParent)
1.50 +{
1.51 + NS_ASSERTION(aEditor&&aParent, "null args");
1.52 + if (!aEditor || !aParent) { return NS_ERROR_NULL_POINTER; }
1.53 +
1.54 + mEditor = aEditor;
1.55 + mTag = aTag;
1.56 + mParent = do_QueryInterface(aParent);
1.57 + mOffsetInParent = aOffsetInParent;
1.58 + return NS_OK;
1.59 +}
1.60 +
1.61 +
1.62 +NS_IMETHODIMP CreateElementTxn::DoTransaction(void)
1.63 +{
1.64 + NS_ASSERTION(mEditor && mParent, "bad state");
1.65 + NS_ENSURE_TRUE(mEditor && mParent, NS_ERROR_NOT_INITIALIZED);
1.66 +
1.67 + nsCOMPtr<dom::Element> newContent;
1.68 +
1.69 + //new call to use instead to get proper HTML element, bug# 39919
1.70 + nsresult result = mEditor->CreateHTMLContent(mTag, getter_AddRefs(newContent));
1.71 + NS_ENSURE_SUCCESS(result, result);
1.72 + NS_ENSURE_STATE(newContent);
1.73 +
1.74 + mNewNode = newContent->AsDOMNode();
1.75 + // Try to insert formatting whitespace for the new node:
1.76 + mEditor->MarkNodeDirty(mNewNode);
1.77 +
1.78 + // insert the new node
1.79 + if (CreateElementTxn::eAppend == int32_t(mOffsetInParent)) {
1.80 + nsCOMPtr<nsIDOMNode> resultNode;
1.81 + return mParent->AppendChild(mNewNode, getter_AddRefs(resultNode));
1.82 + }
1.83 +
1.84 + nsCOMPtr<nsINode> parent = do_QueryInterface(mParent);
1.85 + NS_ENSURE_STATE(parent);
1.86 +
1.87 + mOffsetInParent = XPCOM_MIN(mOffsetInParent, parent->GetChildCount());
1.88 +
1.89 + // note, it's ok for mRefNode to be null. that means append
1.90 + nsIContent* refNode = parent->GetChildAt(mOffsetInParent);
1.91 + mRefNode = refNode ? refNode->AsDOMNode() : nullptr;
1.92 +
1.93 + nsCOMPtr<nsIDOMNode> resultNode;
1.94 + result = mParent->InsertBefore(mNewNode, mRefNode, getter_AddRefs(resultNode));
1.95 + NS_ENSURE_SUCCESS(result, result);
1.96 +
1.97 + // only set selection to insertion point if editor gives permission
1.98 + bool bAdjustSelection;
1.99 + mEditor->ShouldTxnSetSelection(&bAdjustSelection);
1.100 + if (!bAdjustSelection) {
1.101 + // do nothing - dom range gravity will adjust selection
1.102 + return NS_OK;
1.103 + }
1.104 +
1.105 + nsCOMPtr<nsISelection> selection;
1.106 + result = mEditor->GetSelection(getter_AddRefs(selection));
1.107 + NS_ENSURE_SUCCESS(result, result);
1.108 + NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
1.109 +
1.110 + nsCOMPtr<nsIContent> parentContent = do_QueryInterface(mParent);
1.111 + NS_ENSURE_STATE(parentContent);
1.112 +
1.113 + result = selection->CollapseNative(parentContent,
1.114 + parentContent->IndexOf(newContent) + 1);
1.115 + NS_ASSERTION((NS_SUCCEEDED(result)), "selection could not be collapsed after insert.");
1.116 + return result;
1.117 +}
1.118 +
1.119 +NS_IMETHODIMP CreateElementTxn::UndoTransaction(void)
1.120 +{
1.121 + NS_ASSERTION(mEditor && mParent, "bad state");
1.122 + NS_ENSURE_TRUE(mEditor && mParent, NS_ERROR_NOT_INITIALIZED);
1.123 +
1.124 + nsCOMPtr<nsIDOMNode> resultNode;
1.125 + return mParent->RemoveChild(mNewNode, getter_AddRefs(resultNode));
1.126 +}
1.127 +
1.128 +NS_IMETHODIMP CreateElementTxn::RedoTransaction(void)
1.129 +{
1.130 + NS_ASSERTION(mEditor && mParent, "bad state");
1.131 + NS_ENSURE_TRUE(mEditor && mParent, NS_ERROR_NOT_INITIALIZED);
1.132 +
1.133 + // first, reset mNewNode so it has no attributes or content
1.134 + nsCOMPtr<nsIDOMCharacterData>nodeAsText = do_QueryInterface(mNewNode);
1.135 + if (nodeAsText)
1.136 + {
1.137 + nodeAsText->SetData(EmptyString());
1.138 + }
1.139 +
1.140 + // now, reinsert mNewNode
1.141 + nsCOMPtr<nsIDOMNode> resultNode;
1.142 + return mParent->InsertBefore(mNewNode, mRefNode, getter_AddRefs(resultNode));
1.143 +}
1.144 +
1.145 +NS_IMETHODIMP CreateElementTxn::GetTxnDescription(nsAString& aString)
1.146 +{
1.147 + aString.AssignLiteral("CreateElementTxn: ");
1.148 + aString += mTag;
1.149 + return NS_OK;
1.150 +}
1.151 +
1.152 +NS_IMETHODIMP CreateElementTxn::GetNewNode(nsIDOMNode **aNewNode)
1.153 +{
1.154 + NS_ENSURE_TRUE(aNewNode, NS_ERROR_NULL_POINTER);
1.155 + NS_ENSURE_TRUE(mNewNode, NS_ERROR_NOT_INITIALIZED);
1.156 + *aNewNode = mNewNode;
1.157 + NS_ADDREF(*aNewNode);
1.158 + return NS_OK;
1.159 +}
