/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_fpicker.hxx"

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

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

using rtl::OUString;
using rtl::OUStringBuffer;
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;

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

const rtl::OUString TILDE = OUString::createFromAscii( "~" );
const sal_Unicode   TILDE_SIGN = L'~';
const rtl::OUString AMPERSAND = OUString::createFromAscii( "&" );
const sal_Unicode   AMPERSAND_SIGN = L'&';

//------------------------------------------------------------
// OS NAME			Platform					Major	Minor
// 
// Windows NT 3.51	VER_PLATFORM_WIN32_NT		3		51
// Windows NT 4.0	VER_PLATFORM_WIN32_NT		4		0
// Windows 2000		VER_PLATFORM_WIN32_NT		5		0
// Windows XP		VER_PLATFORM_WIN32_NT		5		1
// Windows Vista    VER_PLATFORM_WIN32_NT		6		0
// Windows 7		VER_PLATFORM_WIN32_NT		6		1
// Windows 95		VER_PLATFORM_WIN32_WINDOWS	4		0
// Windows 98		VER_PLATFORM_WIN32_WINDOWS	4		10
// Windows ME		VER_PLATFORM_WIN32_WINDOWS	4		90
//------------------------------------------------------------

bool SAL_CALL IsWindowsVersion(unsigned int PlatformId, unsigned int MajorVersion, int MinorVersion = -1)
{
	OSVERSIONINFO osvi;	
	osvi.dwOSVersionInfoSize = sizeof(osvi);
		
	if(!GetVersionEx(&osvi)) 			
		return false;
	
	bool bRet = (PlatformId == osvi.dwPlatformId) && 
				(MajorVersion == osvi.dwMajorVersion);

	if (MinorVersion > -1)
		bRet = bRet &&
            (sal::static_int_cast< unsigned int >(MinorVersion) ==
             osvi.dwMinorVersion);	
	
	return bRet;
}

//------------------------------------------------------------
// determine if we are running under Vista or newer OS
//------------------------------------------------------------

bool SAL_CALL IsWindowsVistaOrNewer()
{
	OSVERSIONINFO osvi;	
	osvi.dwOSVersionInfoSize = sizeof(osvi);
		
	if(!GetVersionEx(&osvi)) 			
		return false;
	
	bool bRet = (VER_PLATFORM_WIN32_NT == osvi.dwPlatformId) && 
				(osvi.dwMajorVersion >= 6);

	bRet = bRet &&
        (osvi.dwMinorVersion >= 
		 sal::static_int_cast< unsigned int >(0));	
	
	return bRet;
}

//------------------------------------------------------------
// determine if we are running under Windows 7
//------------------------------------------------------------

bool SAL_CALL IsWindows7()
{
	return IsWindowsVersion(VER_PLATFORM_WIN32_NT, 6, 1);	
}

//------------------------------------------------------------
// determine if we are running under Windows Vista
//------------------------------------------------------------

bool SAL_CALL IsWindowsVista()
{
	return IsWindowsVersion(VER_PLATFORM_WIN32_NT, 6, 0);	
}

//------------------------------------------------------------
// determine if we are running under Windows XP
//------------------------------------------------------------

bool SAL_CALL IsWindowsXP()
{
	return IsWindowsVersion(VER_PLATFORM_WIN32_NT, 5, 1);	
}

//------------------------------------------------------------
// determine if we are running under Windows 2000
//------------------------------------------------------------

bool SAL_CALL IsWindows2000()
{
	return IsWindowsVersion(VER_PLATFORM_WIN32_NT, 5, 0);	
}

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

bool SAL_CALL IsWindows98()
{
	return IsWindowsVersion(VER_PLATFORM_WIN32_WINDOWS, 4, 10);
}

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

bool SAL_CALL IsWindowsME()
{
	return 	IsWindowsVersion(VER_PLATFORM_WIN32_WINDOWS, 4, 90);
}

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

bool SAL_CALL IsWindows2000Platform()
{
    // POST: return true if we are at least on Windows 2000

    // WRONG!: return IsWindowsVersion(VER_PLATFORM_WIN32_NT, 5);

    OSVERSIONINFO osvi;
    ZeroMemory(&osvi, sizeof(osvi));
    osvi.dwOSVersionInfoSize = sizeof(osvi);
    GetVersionEx(&osvi);
    if ( osvi.dwMajorVersion >= 5 )
    {
        return true;
    }
    return false;
}

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

void SAL_CALL ListboxAddString( HWND hwnd, const OUString& aString )
{
    LRESULT rc = SendMessageW( 
        hwnd, CB_ADDSTRING, 0, reinterpret_cast< LPARAM >(aString.getStr( )) );
    (void) rc; // avoid warning
    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( "inavlid item position" ),
            rXInterface,
            aArgPos );
}

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

void SAL_CALL ListboxDeleteItems( HWND hwnd, const Any&, const Reference< XInterface >&, sal_Int16 )
    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 ListboxGetSelectedItemIndex( HWND hwnd )
{
    OSL_ASSERT( IsWindow( hwnd ) );

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

    Any aAny;
    aAny <<= static_cast< sal_Int32 >( 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;
}

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

void Replace( const OUString& aLabel, sal_Unicode OldChar, sal_Unicode NewChar, OUStringBuffer& aBuffer )
{
    OSL_ASSERT( aLabel.getLength( ) );
    OSL_ASSERT( aBuffer.getCapacity( ) >= (aLabel.getLength( )) );

    sal_Int32 i = 0;
    const sal_Unicode* pCurrent  = aLabel.getStr( );
    const sal_Unicode* pNext     = aLabel.getStr( ) + 1;
    const sal_Unicode* pEnd      = aLabel.getStr( ) + aLabel.getLength( );

    while( pCurrent < pEnd )
    {
        OSL_ASSERT( pNext <= pEnd );
        OSL_ASSERT( (i >= 0) && (i < aBuffer.getCapacity( )) );

        if ( OldChar == *pCurrent )
        {
            if ( OldChar == *pNext )
            {                
                // two OldChars in line will 
                // be replaced by one
                // e.g. ~~ -> ~
                aBuffer.insert( i, *pCurrent );

                // skip the next one
                pCurrent++;
                pNext++;
            }
            else
            {
                // one OldChar will be replace 
                // by NexChar
                aBuffer.insert( i, NewChar );
            }
         }
         else if ( *pCurrent == NewChar )
         {  
            // a NewChar will be replaced by
             // two NewChars
             // e.g. & -> &&
            aBuffer.insert( i++, *pCurrent );            
            aBuffer.insert( i, *pCurrent );            
         }
         else
         {            
            aBuffer.insert( i, *pCurrent );
         }

         pCurrent++;
         pNext++;
         i++;         
    }    
}

//------------------------------------------------------------
// converts a soffice label to a windows label
// the following rules for character replacements
// will be done:
// '~'  -> '&'
// '~~' -> '~'
// '&'  -> '&&'
//------------------------------------------------------------

OUString SOfficeToWindowsLabel( const rtl::OUString& aSOLabel )
{
    OUString aWinLabel = aSOLabel;

    if ( (aWinLabel.indexOf( TILDE ) > -1) || (aWinLabel.indexOf( AMPERSAND ) > -1) )
    {
        sal_Int32 nStrLen = aWinLabel.getLength( );

        // in the worst case the new string is
        // doubled in length, maybe some waste
        // of memory but how long is a label
        // normaly(?)
        rtl::OUStringBuffer aBuffer( nStrLen * 2 );
                      
        Replace( aWinLabel, TILDE_SIGN, AMPERSAND_SIGN, aBuffer ); 

        aWinLabel = aBuffer.makeStringAndClear( );
    }

    return aWinLabel;
}

//------------------------------------------------------------
// converts a windows label to a soffice label
// the following rules for character replacements
// will be done:
// '&'  -> '~'
// '&&' -> '&'
// '~'  -> '~~'
//------------------------------------------------------------

OUString WindowsToSOfficeLabel( const rtl::OUString& aWinLabel )
{
    OUString aSOLabel = aWinLabel;

    if ( (aSOLabel.indexOf( TILDE ) > -1) || (aSOLabel.indexOf( AMPERSAND ) > -1) )
    {
        sal_Int32 nStrLen = aSOLabel.getLength( );

        // in the worst case the new string is
        // doubled in length, maybe some waste
        // of memory but how long is a label
        // normaly(?)
        rtl::OUStringBuffer aBuffer( nStrLen * 2 );
                      
        Replace( aSOLabel, AMPERSAND_SIGN, TILDE_SIGN, aBuffer ); 

        aSOLabel = aBuffer.makeStringAndClear( );
    }

    return aSOLabel;
}