DisplayAttributeInfo.cpp

//
//	Copyright (C) 2013 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
//
//	This library is free software; you can redistribute it and/or
//	modify it under the terms of the GNU Library General Public
//	License as published by the Free Software Foundation; either
//	version 2 of the License, or (at your option) any later version.
//
//	This library is distributed in the hope that it will be useful,
//	but WITHOUT ANY WARRANTY; without even the implied warranty of
//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//	Library General Public License for more details.
//
//	You should have received a copy of the GNU Library General Public
//	License along with this library; if not, write to the
//	Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
//	Boston, MA  02110-1301, USA.
//

#include "DisplayAttributeInfo.h"
#include <assert.h>

namespace Ime {

DisplayAttributeInfo::DisplayAttributeInfo(const GUID& guid):
	atom_(0),
	guid_(guid),
	desc_(NULL),
	refCount_(1) {

	Reset();
}

DisplayAttributeInfo::~DisplayAttributeInfo(void) {
	if(desc_)
		free(desc_);
}


// COM stuff

// IUnknown
STDMETHODIMP DisplayAttributeInfo::QueryInterface(REFIID riid, void **ppvObj) {
    if (ppvObj == NULL)
        return E_INVALIDARG;

	if(IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_ITfDisplayAttributeInfo))
		*ppvObj = (ITfDisplayAttributeInfo*)this;
	else
		*ppvObj = NULL;

	if(*ppvObj) {
		AddRef();
		return S_OK;
	}
	return E_NOINTERFACE;
}

STDMETHODIMP_(ULONG) DisplayAttributeInfo::AddRef(void) {
	return ++refCount_;
}

STDMETHODIMP_(ULONG) DisplayAttributeInfo::Release(void) {
	assert(refCount_ > 0);
	const ULONG newCount = --refCount_;
	if(0 == refCount_)
		delete this;
	return newCount;
}

// ITfDisplayAttributeInfo
STDMETHODIMP DisplayAttributeInfo::GetGUID(GUID *pguid) {
	*pguid = guid_;
	return S_OK;
}

STDMETHODIMP DisplayAttributeInfo::GetDescription(BSTR *pbstrDesc) {
	if(desc_) {
		*pbstrDesc = ::SysAllocString(desc_);
		return S_OK;
	}
	*pbstrDesc = NULL;
	return E_FAIL;
}

STDMETHODIMP DisplayAttributeInfo::GetAttributeInfo(TF_DISPLAYATTRIBUTE *ptfDisplayAttr) {
	*ptfDisplayAttr = attrib_;
	return S_OK;
}

STDMETHODIMP DisplayAttributeInfo::SetAttributeInfo(const TF_DISPLAYATTRIBUTE *ptfDisplayAttr) {
	attrib_ = *ptfDisplayAttr;
	return S_OK;
}

STDMETHODIMP DisplayAttributeInfo::Reset() {
	attrib_.bAttr = TF_ATTR_INPUT;
	attrib_.crBk.type = TF_CT_NONE;
	attrib_.crLine.type = TF_CT_NONE;
	attrib_.crText.type = TF_CT_NONE;
	attrib_.fBoldLine = FALSE;
	attrib_.lsStyle = TF_LS_NONE;
	return S_OK;
}

} // namespace Ime