/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/


//------------------------------------------------------------------------
// includes
//------------------------------------------------------------------------

#include <osl/diagnose.h>
#include "AutoBuffer.hxx"
#include "WinImplHelper.hxx"
#include <com/sun/star/uno/Sequence.hxx>

#include <systools/win32/user9x.h>

//------------------------------------------------------------
// namespace directives
//------------------------------------------------------------

using rtl::OUString;
using ::com::sun::star::lang::IllegalArgumentException;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::XInterface;
using ::com::sun::star::uno::Any;
using ::com::sun::star::uno::Sequence;

//------------------------------------------------------------
// determine if we are running under Win2000
//------------------------------------------------------------

sal_Bool SAL_CALL IsWin2000( )
{
	OSVERSIONINFOEX osvi;
	BOOL bOsVersionInfoEx;
	sal_Bool bRet = sal_False;

	osvi.dwOSVersionInfoSize = sizeof( OSVERSIONINFOEX );
	bOsVersionInfoEx = GetVersionEx( ( OSVERSIONINFO* )&osvi );
	if( !bOsVersionInfoEx )
	{
		// if OSVERSIONINFOEX doesn't work
		osvi.dwOSVersionInfoSize = sizeof( OSVERSIONINFO );
		if( !GetVersionEx( ( OSVERSIONINFO* )&osvi ) )
			return sal_False;
	}

	if( ( VER_PLATFORM_WIN32_NT == osvi.dwPlatformId ) && ( osvi.dwMajorVersion >= 5 ) )
		bRet = sal_True;

	return bRet;
}

//------------------------------------------------------------
//
//------------------------------------------------------------

void SAL_CALL ListboxAddString( HWND hwnd, const OUString& aString )
{
	LRESULT rc = SendMessageW(
		hwnd, CB_ADDSTRING, 0, reinterpret_cast< LPARAM >(aString.getStr( )) );

	OSL_ASSERT( (CB_ERR != rc) && (CB_ERRSPACE != rc) );
}

//------------------------------------------------------------
//
//------------------------------------------------------------

OUString SAL_CALL ListboxGetString( HWND hwnd, sal_Int32 aPosition )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	OUString aString;

	LRESULT lItem =
		SendMessageW( hwnd, CB_GETLBTEXTLEN, aPosition, 0 );

	if ( (CB_ERR != lItem) && (lItem > 0) )
	{
		// message returns the len of a combobox item
		// without trailing '\0' that's why += 1
		lItem++;

		CAutoUnicodeBuffer aBuff( lItem );

		LRESULT lRet =
			SendMessageW(
				hwnd, CB_GETLBTEXT, aPosition,
				reinterpret_cast<LPARAM>(&aBuff) );

		OSL_ASSERT( lRet != CB_ERR );

		if ( CB_ERR != lRet )
			aString = OUString( aBuff, lRet );
	}

	return aString;
}

//------------------------------------------------------------
//
//------------------------------------------------------------

void SAL_CALL ListboxAddItem( HWND hwnd, const Any& aItem, const Reference< XInterface >& rXInterface, sal_Int16 aArgPos )
	throw( IllegalArgumentException )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	if ( !aItem.hasValue( ) ||
		 aItem.getValueType( ) != getCppuType((OUString*)0) )
		 throw IllegalArgumentException(
			OUString::createFromAscii( "invalid value type or any has no value" ),
			rXInterface,
			aArgPos );

	OUString cbItem;
	aItem >>= cbItem;

	ListboxAddString( hwnd, cbItem );
}

//------------------------------------------------------------
//
//------------------------------------------------------------

void SAL_CALL ListboxAddItems( HWND hwnd, const Any& aItemList, const Reference< XInterface >& rXInterface, sal_Int16 aArgPos )
	throw( IllegalArgumentException )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	if ( !aItemList.hasValue( ) ||
		 aItemList.getValueType( ) != getCppuType((Sequence<OUString>*)0) )
		 throw IllegalArgumentException(
			OUString::createFromAscii( "invalid value type or any has no value" ),
			rXInterface,
			aArgPos );

	Sequence< OUString > aStringList;
	aItemList >>= aStringList;

	sal_Int32 nItemCount = aStringList.getLength( );
	for( sal_Int32 i = 0; i < nItemCount; i++ )
	{
		ListboxAddString( hwnd, aStringList[i] );
	}
}

//------------------------------------------------------------
//
//------------------------------------------------------------

void SAL_CALL ListboxDeleteItem( HWND hwnd, const Any& aPosition, const Reference< XInterface >& rXInterface, sal_Int16 aArgPos )
	throw( IllegalArgumentException )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	if ( !aPosition.hasValue( ) ||
		 ( (aPosition.getValueType( ) != getCppuType((sal_Int32*)0)) &&
		   (aPosition.getValueType( ) != getCppuType((sal_Int16*)0)) &&
		   (aPosition.getValueType( ) != getCppuType((sal_Int8*)0)) ) )
		 throw IllegalArgumentException(
			OUString::createFromAscii( "invalid value type or any has no value" ),
			rXInterface,
			aArgPos );

	sal_Int32 nPos;
	aPosition >>= nPos;

	LRESULT lRet = SendMessage( hwnd, CB_DELETESTRING, nPos, 0 );

	// if the return value is CB_ERR the given
	// index was not correct
	if ( CB_ERR == lRet )
		throw IllegalArgumentException(
			OUString::createFromAscii( "invalid item position" ),
			rXInterface,
			aArgPos );
}

//------------------------------------------------------------
//
//------------------------------------------------------------

void SAL_CALL ListboxDeleteItems( HWND hwnd, const Any& /*unused*/, const Reference< XInterface >& rXInterface, sal_Int16 aArgPos )
	throw( IllegalArgumentException )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	LRESULT lRet = 0;

	do
	{
		// the return value on success is the number
		// of remaining elements in the listbox
		lRet = SendMessageW( hwnd, CB_DELETESTRING, 0, 0 );
	}
	while ( (lRet != CB_ERR) && (lRet > 0) );
}

//------------------------------------------------------------
//
//------------------------------------------------------------

void SAL_CALL ListboxSetSelectedItem( HWND hwnd, const Any& aPosition, const Reference< XInterface >& rXInterface, sal_Int16 aArgPos )
	throw( IllegalArgumentException )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	if ( !aPosition.hasValue( ) ||
		 ( (aPosition.getValueType( ) != getCppuType((sal_Int32*)0)) &&
		   (aPosition.getValueType( ) != getCppuType((sal_Int16*)0)) &&
		   (aPosition.getValueType( ) != getCppuType((sal_Int8*)0)) ) )
		 throw IllegalArgumentException(
			OUString::createFromAscii( "invalid value type or any has no value" ),
			rXInterface,
			aArgPos );

	sal_Int32 nPos;
	aPosition >>= nPos;

	if ( nPos < -1 )
		throw IllegalArgumentException(
			OUString::createFromAscii("invalid index"),
			rXInterface,
			aArgPos );

	LRESULT lRet = SendMessageW( hwnd, CB_SETCURSEL, nPos, 0 );

	if ( (CB_ERR == lRet) && (-1 != nPos) )
		throw IllegalArgumentException(
			OUString::createFromAscii("invalid index"),
			rXInterface,
			aArgPos );
}

//------------------------------------------------------------
//
//------------------------------------------------------------

Any SAL_CALL ListboxGetItems( HWND hwnd )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	LRESULT nItemCount = SendMessageW( hwnd, CB_GETCOUNT, 0, 0 );

	Sequence< OUString > aItemList;

	if ( CB_ERR != nItemCount )
	{
		aItemList.realloc( nItemCount );

		for ( sal_Int32 i = 0; i < nItemCount; i++ )
		{
			aItemList[i] = ListboxGetString( hwnd, i );
		}
	}

	Any aAny;
	aAny <<= aItemList;

	return aAny;
}

//------------------------------------------------------------
//
//------------------------------------------------------------

Any SAL_CALL ListboxGetSelectedItem( HWND hwnd )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	LRESULT idxItem = SendMessageW( hwnd, CB_GETCURSEL, 0, 0 );

	Any aAny;
	aAny <<= ListboxGetString( hwnd, idxItem );

	return aAny;
}

//------------------------------------------------------------
//
//------------------------------------------------------------

Any SAL_CALL CheckboxGetState( HWND hwnd )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	LRESULT lChkState = SendMessageW( hwnd, BM_GETCHECK, 0, 0 );
	sal_Bool bChkState = (lChkState == BST_CHECKED) ? sal_True : sal_False;
	Any aAny;
	aAny.setValue( &bChkState, getCppuType((sal_Bool*)0) );
	return aAny;
}

//------------------------------------------------------------
//
//------------------------------------------------------------

void SAL_CALL CheckboxSetState(
	HWND hwnd, const ::com::sun::star::uno::Any& aState, const Reference< XInterface >& rXInterface, sal_Int16 aArgPos )
	throw( IllegalArgumentException )
{
	OSL_ASSERT( IsWindow( hwnd ) );

	if ( !aState.hasValue( ) ||
		 aState.getValueType( ) != getCppuType((sal_Bool*)0) )
		 throw IllegalArgumentException(
			OUString::createFromAscii( "invalid value type or any has no value" ),
			rXInterface,
			aArgPos );

	sal_Bool bCheckState = *reinterpret_cast< const sal_Bool* >( aState.getValue( ) );
	WPARAM wParam = bCheckState ? BST_CHECKED : BST_UNCHECKED;
	SendMessageW( hwnd, BM_SETCHECK, wParam, 0 );
}

//------------------------------------------------------------
//
//------------------------------------------------------------

sal_uInt32 SAL_CALL _wcslenex( const sal_Unicode* pStr )
{
	if ( !pStr )
		return 0;

	const sal_Unicode* pTemp = pStr;
	sal_uInt32 strLen = 0;
	while( *pTemp || *(pTemp + 1) )
	{
		pTemp++;
		strLen++;
	}

	return strLen;
}

/* vim: set noet sw=4 ts=4: */