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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /editor/libeditor/InsertTextTransaction.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'editor/libeditor/InsertTextTransaction.cpp')
-rw-r--r--editor/libeditor/InsertTextTransaction.cpp125
1 files changed, 125 insertions, 0 deletions
diff --git a/editor/libeditor/InsertTextTransaction.cpp b/editor/libeditor/InsertTextTransaction.cpp
new file mode 100644
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+++ b/editor/libeditor/InsertTextTransaction.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "InsertTextTransaction.h"
+
+#include "mozilla/EditorBase.h" // mEditorBase
+#include "mozilla/SelectionState.h" // RangeUpdater
+#include "mozilla/dom/Selection.h" // Selection local var
+#include "mozilla/dom/Text.h" // mTextNode
+#include "nsAString.h" // nsAString parameter
+#include "nsDebug.h" // for NS_ASSERTION, etc.
+#include "nsError.h" // for NS_OK, etc.
+#include "nsQueryObject.h" // for do_QueryObject
+
+namespace mozilla {
+
+using namespace dom;
+
+InsertTextTransaction::InsertTextTransaction(Text& aTextNode,
+ uint32_t aOffset,
+ const nsAString& aStringToInsert,
+ EditorBase& aEditorBase,
+ RangeUpdater* aRangeUpdater)
+ : mTextNode(&aTextNode)
+ , mOffset(aOffset)
+ , mStringToInsert(aStringToInsert)
+ , mEditorBase(aEditorBase)
+ , mRangeUpdater(aRangeUpdater)
+{
+}
+
+InsertTextTransaction::~InsertTextTransaction()
+{
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(InsertTextTransaction, EditTransactionBase,
+ mTextNode)
+
+NS_IMPL_ADDREF_INHERITED(InsertTextTransaction, EditTransactionBase)
+NS_IMPL_RELEASE_INHERITED(InsertTextTransaction, EditTransactionBase)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(InsertTextTransaction)
+ if (aIID.Equals(NS_GET_IID(InsertTextTransaction))) {
+ foundInterface = static_cast<nsITransaction*>(this);
+ } else
+NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
+
+
+NS_IMETHODIMP
+InsertTextTransaction::DoTransaction()
+{
+ nsresult rv = mTextNode->InsertData(mOffset, mStringToInsert);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Only set selection to insertion point if editor gives permission
+ if (mEditorBase.GetShouldTxnSetSelection()) {
+ RefPtr<Selection> selection = mEditorBase.GetSelection();
+ NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
+ DebugOnly<nsresult> rv =
+ selection->Collapse(mTextNode, mOffset + mStringToInsert.Length());
+ NS_ASSERTION(NS_SUCCEEDED(rv),
+ "Selection could not be collapsed after insert");
+ } else {
+ // Do nothing - DOM Range gravity will adjust selection
+ }
+ mRangeUpdater->SelAdjInsertText(*mTextNode, mOffset, mStringToInsert);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+InsertTextTransaction::UndoTransaction()
+{
+ return mTextNode->DeleteData(mOffset, mStringToInsert.Length());
+}
+
+NS_IMETHODIMP
+InsertTextTransaction::Merge(nsITransaction* aTransaction,
+ bool* aDidMerge)
+{
+ if (!aTransaction || !aDidMerge) {
+ return NS_OK;
+ }
+ // Set out param default value
+ *aDidMerge = false;
+
+ // If aTransaction is a InsertTextTransaction, and if the selection hasn't
+ // changed, then absorb it.
+ RefPtr<InsertTextTransaction> otherTransaction = do_QueryObject(aTransaction);
+ if (otherTransaction && IsSequentialInsert(*otherTransaction)) {
+ nsAutoString otherData;
+ otherTransaction->GetData(otherData);
+ mStringToInsert += otherData;
+ *aDidMerge = true;
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+InsertTextTransaction::GetTxnDescription(nsAString& aString)
+{
+ aString.AssignLiteral("InsertTextTransaction: ");
+ aString += mStringToInsert;
+ return NS_OK;
+}
+
+/* ============ private methods ================== */
+
+void
+InsertTextTransaction::GetData(nsString& aResult)
+{
+ aResult = mStringToInsert;
+}
+
+bool
+InsertTextTransaction::IsSequentialInsert(
+ InsertTextTransaction& aOtherTransaction)
+{
+ return aOtherTransaction.mTextNode == mTextNode &&
+ aOtherTransaction.mOffset == mOffset + mStringToInsert.Length();
+}
+
+} // namespace mozilla