mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <stdio.h> // for printf
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#include "InsertElementTxn.h"
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#include "nsAString.h"
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#include "nsDebug.h" // for NS_ENSURE_TRUE, etc
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#include "nsEditor.h" // for nsEditor
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#include "nsError.h" // for NS_ERROR_NULL_POINTER, etc
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#include "nsIContent.h" // for nsIContent
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#include "nsINode.h" // for nsINode
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#include "nsISelection.h" // for nsISelection
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#include "nsMemory.h" // for nsMemory
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#include "nsReadableUtils.h" // for ToNewCString
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#include "nsString.h" // for nsString
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using namespace mozilla;
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InsertElementTxn::InsertElementTxn()
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: EditTxn()
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{
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED_2(InsertElementTxn, EditTxn,
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mNode,
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mParent)
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NS_IMPL_ADDREF_INHERITED(InsertElementTxn, EditTxn)
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NS_IMPL_RELEASE_INHERITED(InsertElementTxn, EditTxn)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(InsertElementTxn)
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NS_INTERFACE_MAP_END_INHERITING(EditTxn)
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NS_IMETHODIMP InsertElementTxn::Init(nsINode *aNode,
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nsINode *aParent,
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int32_t aOffset,
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nsEditor *aEditor)
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{
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NS_ASSERTION(aNode && aParent && aEditor, "bad arg");
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NS_ENSURE_TRUE(aNode && aParent && aEditor, NS_ERROR_NULL_POINTER);
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mNode = do_QueryInterface(aNode);
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mParent = do_QueryInterface(aParent);
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mOffset = aOffset;
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mEditor = aEditor;
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NS_ENSURE_TRUE(mNode && mParent && mEditor, NS_ERROR_INVALID_ARG);
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return NS_OK;
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}
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NS_IMETHODIMP InsertElementTxn::DoTransaction(void)
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{
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NS_ENSURE_TRUE(mNode && mParent, NS_ERROR_NOT_INITIALIZED);
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nsCOMPtr<nsINode> parent = do_QueryInterface(mParent);
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NS_ENSURE_STATE(parent);
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uint32_t count = parent->GetChildCount();
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if (mOffset > int32_t(count) || mOffset == -1) {
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// -1 is sentinel value meaning "append at end"
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mOffset = count;
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}
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// note, it's ok for refContent to be null. that means append
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nsCOMPtr<nsIContent> refContent = parent->GetChildAt(mOffset);
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mEditor->MarkNodeDirty(mNode);
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ErrorResult rv;
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mParent->InsertBefore(*mNode, refContent, rv);
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NS_ENSURE_SUCCESS(rv.ErrorCode(), rv.ErrorCode());
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// only set selection to insertion point if editor gives permission
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bool bAdjustSelection;
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mEditor->ShouldTxnSetSelection(&bAdjustSelection);
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if (bAdjustSelection)
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{
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nsCOMPtr<nsISelection> selection;
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rv = mEditor->GetSelection(getter_AddRefs(selection));
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NS_ENSURE_SUCCESS(rv.ErrorCode(), rv.ErrorCode());
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NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
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// place the selection just after the inserted element
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selection->Collapse(mParent->AsDOMNode(), mOffset+1);
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}
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else
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{
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// do nothing - dom range gravity will adjust selection
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}
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return NS_OK;
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}
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NS_IMETHODIMP InsertElementTxn::UndoTransaction(void)
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{
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NS_ENSURE_TRUE(mNode && mParent, NS_ERROR_NOT_INITIALIZED);
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ErrorResult rv;
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mParent->RemoveChild(*mNode, rv);
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return rv.ErrorCode();
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}
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NS_IMETHODIMP InsertElementTxn::GetTxnDescription(nsAString& aString)
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{
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aString.AssignLiteral("InsertElementTxn");
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return NS_OK;
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}
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