gecko-dev/layout/generic/nsBidiFrames.cpp

109 lines
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* IBM Corporation. Portions created by IBM are
* Copyright (C) 2000 IBM Corporation.
* All Rights Reserved.
*
* Copyright (C) 2000, International Business Machines
* Corporation and others. All Rights Reserved.
*
* Contributor(s):
*/
#ifdef IBMBIDI
#include "nsBidiFrames.h"
#include "nsLayoutAtoms.h"
nsDirectionalFrame::nsDirectionalFrame(PRUnichar aChar)
: mChar(aChar)
{
}
nsDirectionalFrame::~nsDirectionalFrame()
{
}
PRUnichar
nsDirectionalFrame::GetChar(void) const
{
return mChar;
}
/**
* Get the "type" of the frame
*
* @see nsLayoutAtoms::directionalFrame
*/
NS_IMETHODIMP
nsDirectionalFrame::GetFrameType(nsIAtom** aType) const
{
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
*aType = nsLayoutAtoms::directionalFrame;
NS_ADDREF(*aType);
return NS_OK;
}
const nsIID&
nsDirectionalFrame::GetIID()
{
static nsIID iid = NS_DIRECTIONAL_FRAME_IID;
return iid;
}
NS_IMETHODIMP
nsDirectionalFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
nsresult rv = NS_NOINTERFACE;
if (!aInstancePtr) {
rv = NS_ERROR_NULL_POINTER;
}
else if (aIID.Equals(NS_GET_IID(nsDirectionalFrame) ) ) {
*aInstancePtr = (void*) this;
rv = NS_OK;
}
return rv;
}
void*
nsDirectionalFrame::operator new(size_t aSize) CPP_THROW_NEW
{
void* frame = ::operator new(aSize);
if (frame) {
memset(frame, 0, aSize);
}
return frame;
}
nsresult
NS_NewDirectionalFrame(nsIFrame** aNewFrame, PRUnichar aChar)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsDirectionalFrame* frame = new nsDirectionalFrame(aChar);
*aNewFrame = frame;
if (nsnull == frame) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
#endif /* IBMBIDI */