gecko/editor/libeditor/SplitNodeTxn.cpp
Nathan Froyd e4e2da55c9 Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout.  The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.

CLOSED TREE makes big refactorings like this a piece of cake.

 # The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
    xargs perl -p -i -e '
 s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
 s/nsRefPtr ?</RefPtr</g;   # handle declarations and variables
'

 # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h

 # Handle nsRefPtr.h itself, a couple places that define constructors
 # from nsRefPtr, and code generators specially.  We do this here, rather
 # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
 # things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
     mfbt/nsRefPtr.h \
     xpcom/glue/nsCOMPtr.h \
     xpcom/base/OwningNonNull.h \
     ipc/ipdl/ipdl/lower.py \
     ipc/ipdl/ipdl/builtin.py \
     dom/bindings/Codegen.py \
     python/lldbutils/lldbutils/utils.py

 # In our indiscriminate substitution above, we renamed
 # nsRefPtrGetterAddRefs, the class behind getter_AddRefs.  Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
    xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'

if [ -d .git ]; then
    git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
    hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi
2015-10-18 01:24:48 -04:00

128 lines
3.8 KiB
C++

/* -*- 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 "SplitNodeTxn.h"
#include "mozilla/dom/Selection.h"
#include "nsAString.h"
#include "nsDebug.h" // for NS_ASSERTION, etc
#include "nsEditor.h" // for nsEditor
#include "nsError.h" // for NS_ERROR_NOT_INITIALIZED, etc
#include "nsIContent.h" // for nsIContent
using namespace mozilla;
using namespace mozilla::dom;
// note that aEditor is not refcounted
SplitNodeTxn::SplitNodeTxn(nsEditor& aEditor, nsIContent& aNode,
int32_t aOffset)
: EditTxn()
, mEditor(aEditor)
, mExistingRightNode(&aNode)
, mOffset(aOffset)
, mNewLeftNode(nullptr)
, mParent(nullptr)
{
}
SplitNodeTxn::~SplitNodeTxn()
{
}
NS_IMPL_CYCLE_COLLECTION_INHERITED(SplitNodeTxn, EditTxn,
mParent,
mNewLeftNode)
NS_IMPL_ADDREF_INHERITED(SplitNodeTxn, EditTxn)
NS_IMPL_RELEASE_INHERITED(SplitNodeTxn, EditTxn)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SplitNodeTxn)
NS_INTERFACE_MAP_END_INHERITING(EditTxn)
NS_IMETHODIMP
SplitNodeTxn::DoTransaction()
{
// Create a new node
ErrorResult rv;
// Don't use .downcast directly because AsContent has an assertion we want
nsCOMPtr<nsINode> clone = mExistingRightNode->CloneNode(false, rv);
NS_ASSERTION(!rv.Failed() && clone, "Could not create clone");
NS_ENSURE_TRUE(!rv.Failed() && clone, rv.StealNSResult());
mNewLeftNode = dont_AddRef(clone.forget().take()->AsContent());
mEditor.MarkNodeDirty(mExistingRightNode->AsDOMNode());
// Get the parent node
mParent = mExistingRightNode->GetParentNode();
NS_ENSURE_TRUE(mParent, NS_ERROR_NULL_POINTER);
// Insert the new node
rv = mEditor.SplitNodeImpl(*mExistingRightNode, mOffset, *mNewLeftNode);
if (mEditor.GetShouldTxnSetSelection()) {
RefPtr<Selection> selection = mEditor.GetSelection();
NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
rv = selection->Collapse(mNewLeftNode, mOffset);
}
return rv.StealNSResult();
}
NS_IMETHODIMP
SplitNodeTxn::UndoTransaction()
{
MOZ_ASSERT(mNewLeftNode && mParent);
// This assumes Do inserted the new node in front of the prior existing node
return mEditor.JoinNodesImpl(mExistingRightNode, mNewLeftNode, mParent);
}
/* Redo cannot simply resplit the right node, because subsequent transactions
* on the redo stack may depend on the left node existing in its previous
* state.
*/
NS_IMETHODIMP
SplitNodeTxn::RedoTransaction()
{
MOZ_ASSERT(mNewLeftNode && mParent);
ErrorResult rv;
// First, massage the existing node so it is in its post-split state
if (mExistingRightNode->GetAsText()) {
rv = mExistingRightNode->GetAsText()->DeleteData(0, mOffset);
NS_ENSURE_TRUE(!rv.Failed(), rv.StealNSResult());
} else {
nsCOMPtr<nsIContent> child = mExistingRightNode->GetFirstChild();
nsCOMPtr<nsIContent> nextSibling;
for (int32_t i=0; i < mOffset; i++) {
if (rv.Failed()) {
return rv.StealNSResult();
}
if (!child) {
return NS_ERROR_NULL_POINTER;
}
nextSibling = child->GetNextSibling();
mExistingRightNode->RemoveChild(*child, rv);
if (!rv.Failed()) {
mNewLeftNode->AppendChild(*child, rv);
}
child = nextSibling;
}
}
// Second, re-insert the left node into the tree
mParent->InsertBefore(*mNewLeftNode, mExistingRightNode, rv);
return rv.StealNSResult();
}
NS_IMETHODIMP
SplitNodeTxn::GetTxnDescription(nsAString& aString)
{
aString.AssignLiteral("SplitNodeTxn");
return NS_OK;
}
nsIContent*
SplitNodeTxn::GetNewNode()
{
return mNewLeftNode;
}