libreoffice/fpicker/source/win32/filepicker/WinFileOpenImpl.cxx

/*************************************************************************
 *
 *  $RCSfile: WinFileOpenImpl.cxx,v $
 *
 *  $Revision: 1.15 $
 *
 *  last change: $Author: tra $ $Date: 2002-03-27 10:35:59 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source 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.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): _______________________________________
 *
 *
 ************************************************************************/

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

#ifndef _WINFILEOPENIMPL_HXX_
#include "WinFileOpenImpl.hxx"
#endif

#ifndef _OSL_DIAGNOSE_H_
#include <osl/diagnose.h>
#endif

#ifndef _OSL_FILE_HXX_
#include <osl/file.hxx>
#endif

#ifndef _COM_SUN_STAR_UI_DIALOGS_EXTENDEDFILEPICKERELEMENTIDS_HPP_
#include <com/sun/star/ui/dialogs/ExtendedFilePickerElementIds.hpp>
#endif

#ifndef _COM_SUN_STAR_UI_DIALOGS_FILEPICKEREVENT_HPP_
#include <com/sun/star/ui/dialogs/FilePickerEvent.hpp>
#endif

#ifndef _COM_SUN_STAR_UI_DIALOGS_EXECUTABLEDIALOGRESULTS_HPP_
#include <com/sun/star/ui/dialogs/ExecutableDialogResults.hpp>
#endif

#ifndef _COM_SUN_STAR_UI_DIALOGS_COMMONFILEPICKERELEMENTIDS_HPP_
#include <com/sun/star/ui/dialogs/CommonFilePickerElementIds.hpp>
#endif

#ifndef _COM_SUN_STAR_UI_DIALOGS_FILEPREVIEWIMAGEFORMATS_HPP_
#include <com/sun/star/ui/dialogs/FilePreviewImageFormats.hpp>
#endif

#ifndef _COM_SUN_STAR_UI_DIALOGS_LISTBOXCONTROLACTIONS_HPP_
#include <com/sun/star/ui/dialogs/ListBoxControlActions.hpp>
#endif

#ifndef _WINIMPLHELPER_HXX_
#include "..\misc\WinImplHelper.hxx"
#endif

#ifndef _FILEPICKER_HXX_
#include "filepicker.hxx"
#endif

#ifndef _CONTROLACCESS_HXX_
#include "controlaccess.hxx"
#endif

#ifndef _RTL_USTRBUF_HXX_
#include <rtl/ustrbuf.hxx>
#endif

#include <systools/win32/comdlg9x.h>
#include <systools/win32/user9x.h>

#ifndef _RESOURCEPROVIDER_HXX_
#include "..\misc\resourceprovider.hxx"
#endif

#ifndef _RTL_STRING_HXX_
#include <rtl/string.hxx>
#endif

#ifndef _THREAD_HXX_
#include <osl/thread.hxx>
#endif

#ifndef _FILEPICKERSTATE_HXX_
#include "filepickerstate.hxx"
#endif

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

using namespace std;
using rtl::OUString;
using rtl::OUStringBuffer;

using ::com::sun::star::uno::RuntimeException;
using ::com::sun::star::uno::XInterface;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::Sequence;
using ::com::sun::star::uno::Any;
using ::com::sun::star::ui::dialogs::FilePickerEvent;
using ::com::sun::star::lang::IllegalArgumentException;
using ::com::sun::star::ui::dialogs::XFilePicker;

using ::com::sun::star::beans::StringPair;

using namespace ::com::sun::star::ui::dialogs::ExtendedFilePickerElementIds;
using namespace ::com::sun::star::ui::dialogs::CommonFilePickerElementIds;
using namespace ::com::sun::star::ui::dialogs::ListboxControlActions;

//-------------------------------------------------------------------------
// to distinguish what to do in the enum child window callback function
//-------------------------------------------------------------------------

enum ECW_ACTION_T
{
    INIT_CUSTOM_CONTROLS,
    CACHE_CONTROL_VALUES
};

struct EnumParam
{
    ECW_ACTION_T        m_action;
    CWinFileOpenImpl*   m_instance;

    EnumParam( ECW_ACTION_T action, CWinFileOpenImpl* instance ):
        m_action( action ),
        m_instance( instance )
    {}
};

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

const OUString BACKSLASH = OUString::createFromAscii( "\\" );
const OUString FILTER_SEPARATOR = OUString::createFromAscii( "------------------------------------------" );
const OUString ALL_FILES_WILDCARD = OUString::createFromAscii( "*.*" );
const sal_Bool ALLOW_DUPLICATES = sal_True;

//-------------------------------------------------------------------------
// ctor
//-------------------------------------------------------------------------

CWinFileOpenImpl::CWinFileOpenImpl(
    CFilePicker* aFilePicker,
    sal_Bool bFileOpenDialog,
    sal_uInt32 dwFlags,
    sal_uInt32 dwTemplateId,
    HINSTANCE hInstance) :
    CFileOpenDialog(bFileOpenDialog, dwFlags, dwTemplateId, hInstance),
    m_filterContainer( new CFilterContainer()),
    m_Preview(new CPreviewAdapter(hInstance)),
    m_CustomControlFactory(new CCustomControlFactory()),
    m_CustomControls(m_CustomControlFactory->CreateCustomControlContainer()),
    m_FilePicker(aFilePicker),
    m_bInitialSelChanged(sal_True),
    m_HelpPopupWindow(hInstance, m_hwndFileOpenDlg),
    m_ExecuteFilePickerState(new CExecuteFilePickerState()),
    m_NonExecuteFilePickerState(new CNonExecuteFilePickerState())
{
    m_FilePickerState = m_NonExecuteFilePickerState;
}

//------------------------------------------------------------------------
// dtor
//------------------------------------------------------------------------

CWinFileOpenImpl::~CWinFileOpenImpl()
{
    delete m_ExecuteFilePickerState;
    delete m_NonExecuteFilePickerState;
}

//------------------------------------------------------------------------
// we expect the directory in URL format
//------------------------------------------------------------------------

void CWinFileOpenImpl::setDisplayDirectory( const OUString& aDirectory )
    throw( IllegalArgumentException, RuntimeException )
{
    OUString aSysDirectory;
    if( aDirectory.getLength( ) > 0 )
    {
        if ( ::osl::FileBase::E_None !=
             ::osl::FileBase::getSystemPathFromFileURL(aDirectory,aSysDirectory))
            throw IllegalArgumentException(
                OUString::createFromAscii("Invalid directory"),
                static_cast<XFilePicker*>(m_FilePicker), 1);

        // we ensure that there is a trailing '/' at the end of
        // he given file url, because the windows functions only
        // works correctly when providing "c:\" or an environment
        // variable like "=c:=c:\.." etc. is set, else the
        // FolderPicker would stand in the root of the shell
        // hierarchie which is the desktop folder
        if ( aSysDirectory.lastIndexOf(BACKSLASH) != (aSysDirectory.getLength() - 1))
            aSysDirectory += BACKSLASH;
    }

    // call base class method
    CFileOpenDialog::setDisplayDirectory(aSysDirectory);
}

//------------------------------------------------------------------------
// we return the directory in URL format
//------------------------------------------------------------------------

OUString CWinFileOpenImpl::getDisplayDirectory( ) throw( RuntimeException )
{
    return m_FilePickerState->getDisplayDirectory( this );
}

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

void SAL_CALL CWinFileOpenImpl::setDefaultName( const OUString& aName )
    throw( IllegalArgumentException, RuntimeException )
{
    // we don't set the default name directly
    // because this influences how the file open
    // dialog sets the initial path when it is about
    // to open (see MSDN: OPENFILENAME)
    // so we save the default name which should
    // appear in the file-name-box and set
    // this name when processing onInitDone
    m_defaultName = aName;
}

//-----------------------------------------------------------------------------------------
// return format: URL
// if multiselection is allowed there are two different cases
// 1. one file selected: the sequence contains one entry path\filename.ext
// 2. multiple files selected: the sequence contains multiple entries
//    the first entry is the path url, all other entries are file names
//-----------------------------------------------------------------------------------------

Sequence< OUString > SAL_CALL CWinFileOpenImpl::getFiles(  ) throw(RuntimeException)
{
    return m_FilePickerState->getFiles( this );
}

//-----------------------------------------------------------------------------------------
// shows the FileOpen/FileSave dialog
//-----------------------------------------------------------------------------------------

sal_Int16 SAL_CALL CWinFileOpenImpl::execute(  ) throw(RuntimeException)
{
    sal_Int16 rc = CFileOpenDialog::doModal();

    if ( 1 == rc )
        rc = ::com::sun::star::ui::dialogs::ExecutableDialogResults::OK;
    else if ( 0 == rc )
        rc = ::com::sun::star::ui::dialogs::ExecutableDialogResults::CANCEL;
    else
        throw RuntimeException(
            OUString::createFromAscii( "Error executing dialog" ),
            static_cast< XFilePicker* >( m_FilePicker ) );

    return rc;
}

//-----------------------------------------------------------------------------------------
// appends a new filter
// returns false if the title (aTitle) was already added or the title or the filter are
// empty
//-----------------------------------------------------------------------------------------

void SAL_CALL CWinFileOpenImpl::appendFilter( const OUString& aTitle, const OUString& aFilter )
    throw(IllegalArgumentException, RuntimeException)
{
    sal_Bool bRet = m_filterContainer->addFilter( aTitle, aFilter );

    if ( !bRet )
        throw IllegalArgumentException(
            OUString::createFromAscii("filter already exists"),
            static_cast< XFilePicker* >( m_FilePicker ),
            1 );

    // #95345# see MSDN OPENFILENAME
    // If nFilterIndex is zero and lpstrCustomFilter is NULL,
    // the system uses the first filter in the lpstrFilter buffer.
    // to reflect this we must set the filter index so that calls
    // to getSelectedFilterIndex without explicitly calling
    // setFilterIndex before does not return 0 which leads to a
    // false state
    if ( 0 == getSelectedFilterIndex() )
        CFileOpenDialog::setFilterIndex( 1 );
}

//-----------------------------------------------------------------------------------------
// sets a current filter
//-----------------------------------------------------------------------------------------

void SAL_CALL CWinFileOpenImpl::setCurrentFilter( const OUString& aTitle )
    throw( IllegalArgumentException, RuntimeException)
{
    sal_Int32 filterPos = m_filterContainer->getFilterPos( aTitle );

    if ( filterPos < 0 )
        throw IllegalArgumentException(
            OUString::createFromAscii( "filter doesn't exist"),
            static_cast< XFilePicker* >( m_FilePicker ),
            1 );

    // filter index of the base class starts with 1
    CFileOpenDialog::setFilterIndex( filterPos + 1 );
}

//-----------------------------------------------------------------------------------------
// returns the currently selected filter
//-----------------------------------------------------------------------------------------

OUString SAL_CALL CWinFileOpenImpl::getCurrentFilter(  ) throw(RuntimeException)
{
    sal_uInt32 nIndex = getSelectedFilterIndex( );

    OUString currentFilter;
    if ( nIndex > 0 )
    {
        // filter index of the base class starts with 1
        sal_Bool bRet = m_filterContainer->getFilter( nIndex - 1, currentFilter );
        OSL_ASSERT( bRet );
    }

    return currentFilter;
}

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

inline void SAL_CALL CWinFileOpenImpl::appendFilterGroupSeparator( )
{
    m_filterContainer->addFilter( FILTER_SEPARATOR, ALL_FILES_WILDCARD, ALLOW_DUPLICATES );
}

//-----------------------------------------------------------------------------------------
// XFilterGroupManager
//-----------------------------------------------------------------------------------------

void SAL_CALL CWinFileOpenImpl::appendFilterGroup( const OUString& sGroupTitle, const Sequence< StringPair >& aFilters )
    throw (IllegalArgumentException, RuntimeException)
{
    OSL_ENSURE( 0 == sGroupTitle.getLength( ), "appendFilterGroup: Parameter 'GroupTitle' currently ignored" );

    sal_Int32 nFilters = aFilters.getLength( );

    OSL_PRECOND( nFilters > 0, "Empty filter list" );

    if ( nFilters > 0 )
    {
        // append a separator before the next group if
        // there is already a group of filters
        if ( m_filterContainer->numFilter( ) > 0 )
            appendFilterGroupSeparator( );

        for ( int i = 0; i < nFilters; i++ )
            appendFilter( aFilters[i].First, aFilters[i].Second );
    }
}

//=================================================================================================================
// XExtendedFilePicker
//=================================================================================================================

void SAL_CALL CWinFileOpenImpl::setValue( sal_Int16 aControlId, sal_Int16 aControlAction, const Any& aValue )
    throw(RuntimeException)
{
    OSL_ASSERT( m_FilePickerState );
    m_FilePickerState->setValue( aControlId, aControlAction, aValue );
}

//-----------------------------------------------------------------------------------------
// returns the value of an custom template element
// we assume that there are only checkboxes or comboboxes
//-----------------------------------------------------------------------------------------

Any SAL_CALL CWinFileOpenImpl::getValue( sal_Int16 aControlId, sal_Int16 aControlAction )
    throw(RuntimeException)
{
    OSL_ASSERT( m_FilePickerState );
    return m_FilePickerState->getValue( aControlId, aControlAction );
}

//-----------------------------------------------------------------------------------------
// enables a custom template element
//-----------------------------------------------------------------------------------------

void SAL_CALL CWinFileOpenImpl::enableControl( sal_Int16 ControlID, sal_Bool bEnable )
    throw(RuntimeException)
{
    OSL_ASSERT( m_FilePickerState );
    m_FilePickerState->enableControl( ControlID, bEnable );
}

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

void SAL_CALL CWinFileOpenImpl::setLabel( sal_Int16 aControlId, const ::rtl::OUString& aLabel )
    throw (RuntimeException)
{
    m_FilePickerState->setLabel( aControlId, aLabel );
}

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

OUString SAL_CALL CWinFileOpenImpl::getLabel( sal_Int16 aControlId )
        throw (RuntimeException)
{
    return m_FilePickerState->getLabel( aControlId );
}

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

Sequence< sal_Int16 > SAL_CALL CWinFileOpenImpl::getSupportedImageFormats()
    throw (RuntimeException)
{
    return m_Preview->getSupportedImageFormats();
}

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

sal_Int32 SAL_CALL CWinFileOpenImpl::getTargetColorDepth()
    throw (RuntimeException)
{
    return m_Preview->getTargetColorDepth();
}

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

sal_Int32 SAL_CALL CWinFileOpenImpl::getAvailableWidth()
        throw (RuntimeException)
{
    return m_Preview->getAvailableWidth();
}

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

sal_Int32 SAL_CALL CWinFileOpenImpl::getAvailableHeight()
    throw (::com::sun::star::uno::RuntimeException)
{
    return m_Preview->getAvailableHeight();
}

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

void SAL_CALL CWinFileOpenImpl::setImage(sal_Int16 aImageFormat, const Any& aImage)
    throw (IllegalArgumentException, RuntimeException)
{
    m_Preview->setImage(aImageFormat,aImage);
}

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

sal_Bool SAL_CALL CWinFileOpenImpl::setShowState(sal_Bool bShowState)
        throw (::com::sun::star::uno::RuntimeException)
{
    return m_Preview->setShowState(bShowState);
}

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

sal_Bool SAL_CALL CWinFileOpenImpl::getShowState()
    throw (RuntimeException)
{
    return m_Preview->getShowState();
}

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

void SAL_CALL CWinFileOpenImpl::cancel()
{
    if (IsWindow(m_hwndFileOpenDlg))
    {
        // simulate a mouse click to the
        // cancel button
        PostMessageA(
            m_hwndFileOpenDlg,
            WM_COMMAND,
            MAKEWPARAM(IDCANCEL,BN_CLICKED),
            (LPARAM)GetDlgItem(m_hwndFileOpenDlg, IDCANCEL));
    }
}

//-----------------------------------------------------------------------------------------
// returns the id of a custom template element
//-----------------------------------------------------------------------------------------

sal_Int16 SAL_CALL CWinFileOpenImpl::getFocused()
{
    sal_Int32 nID = GetDlgCtrlID(GetFocus());

    // we don't forward id's of standard file open
    // dialog elements (ctlFirst is defined in dlgs.h
    // in MS Platform SDK)
    if (nID >= ctlFirst)
        nID = 0;

    return nID;
}

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

inline sal_Bool SAL_CALL CWinFileOpenImpl::IsCustomControlHelpRequested(LPHELPINFO lphi) const
{
    return ((lphi->iCtrlId != IDOK) && (lphi->iCtrlId != IDCANCEL) && (lphi->iCtrlId < ctlFirst));
}

//-----------------------------------------------------------------------------------------
// our own DlgProc because we do subclass the dialog
// we catch the WM_NCDESTROY message in order to erase an entry in our static map
// if one instance dies
//-----------------------------------------------------------------------------------------

unsigned int CALLBACK CWinFileOpenImpl::SubClassFunc(
    HWND hWnd, WORD wMessage, WPARAM wParam, LPARAM lParam)
{
    unsigned int lResult = 0;

    CWinFileOpenImpl* pImpl = dynamic_cast<CWinFileOpenImpl*>(getCurrentInstance(hWnd));

    switch(wMessage)
    {
    case WM_HELP:
    {
        LPHELPINFO lphi = reinterpret_cast<LPHELPINFO>(lParam);

        if (pImpl->IsCustomControlHelpRequested(lphi))
            pImpl->onCustomControlHelpRequest(lphi);
        else
            lResult = CallWindowProcA(
                reinterpret_cast<WNDPROC>(pImpl->m_pfnOldDlgProc),
                hWnd,wMessage,wParam,lParam);
    }
    break;

    case WM_SIZE:
        lResult = CallWindowProcA(
            reinterpret_cast<WNDPROC>(pImpl->m_pfnOldDlgProc),
            hWnd,wMessage,wParam,lParam);

        pImpl->onWMSize(hWnd,wParam,LOWORD(lParam),HIWORD(lParam));
        break;

    case WM_WINDOWPOSCHANGED:
        lResult = CallWindowProcA(
            reinterpret_cast<WNDPROC>(pImpl->m_pfnOldDlgProc),
            hWnd,wMessage,wParam,lParam);

        pImpl->onWMWindowPosChanged(hWnd);
        break;

    case WM_SHOWWINDOW:
        lResult = CallWindowProcA(
            reinterpret_cast<WNDPROC>(pImpl->m_pfnOldDlgProc),
            hWnd,wMessage,wParam,lParam);

        pImpl->onWMShow(hWnd,(BOOL)wParam,(int)lParam);
        break;

    default:
        // !!! we use CallWindowProcA
        lResult = CallWindowProcA(
            reinterpret_cast<WNDPROC>(pImpl->m_pfnOldDlgProc),
            hWnd,wMessage,wParam,lParam);
    break;

    } // switch

    return lResult;
}

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

void SAL_CALL CWinFileOpenImpl::InitControlLabel( HWND hWnd )
{
    CResourceProvider aResProvider;

    //-----------------------------------------
    // set the labels for all extendet controls
    //-----------------------------------------

    sal_Int16 aCtrlId = GetDlgCtrlID(hWnd);
    OUString aLabel = aResProvider.getResString(aCtrlId);
    if ( aLabel.getLength( ) )
        setLabel( aCtrlId, aLabel );
}

//-----------------------------------------------------------------
// There may be problems with the layout of our custom controls,
// so that they are not aligned with the standard controls of the
// FileOpen dialog.
// We use a simple algorithm to move the custom controls to their
// proper position and resize them.
// Our approach is to align all static text controls with the
// static text control "File name" of the FileOpen dialog,
// all checkboxes and all list/comboboxes will be left aligned with
// the standard combobox edt1 (defined in MS platform sdk dlgs.h)
// and all push buttons will be left aligned with the standard
// "OK" button
//-----------------------------------------------------------------

void SAL_CALL CWinFileOpenImpl::InitCustomControlContainer(HWND hCustomControl)
{
    m_CustomControls->AddControl(
        m_CustomControlFactory->CreateCustomControl(hCustomControl,m_hwndFileOpenDlg));
}

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

void SAL_CALL CWinFileOpenImpl::CacheControlState(HWND hWnd)
{
    OSL_ASSERT(m_FilePickerState && m_NonExecuteFilePickerState);
    m_ExecuteFilePickerState->cacheControlState(hWnd, m_NonExecuteFilePickerState);
}

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

BOOL CALLBACK CWinFileOpenImpl::EnumChildWndProc(HWND hWnd, LPARAM lParam)
{
    EnumParam* enumParam    = (EnumParam*)lParam;
    CWinFileOpenImpl* pImpl = enumParam->m_instance;

    OSL_ASSERT(pImpl);

    BOOL bRet = TRUE;

    switch(enumParam->m_action)
    {
    case INIT_CUSTOM_CONTROLS:
        pImpl->InitControlLabel(hWnd);
        pImpl->InitCustomControlContainer(hWnd);
        break;

    case CACHE_CONTROL_VALUES:
        pImpl->CacheControlState(hWnd);
    break;

    default:
        // should not end here
        OSL_ASSERT(sal_False);
    }

    return bRet;
}

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

sal_uInt32 SAL_CALL CWinFileOpenImpl::onFileOk()
{
    m_NonExecuteFilePickerState->reset();

    EnumParam enumParam(CACHE_CONTROL_VALUES,this);

    EnumChildWindows(
        m_hwndFileOpenDlgChild,
        CWinFileOpenImpl::EnumChildWndProc,
        (LPARAM)&enumParam);

    return 0;
}

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

void SAL_CALL CWinFileOpenImpl::onSelChanged(HWND hwndListBox)
{
    // the windows file open dialog sends an initial
    // SelChanged message after the InitDone message
    // when the dialog is about to be opened
    // if the lpstrFile buffer of the OPENFILENAME is
    // empty (zero length string) the windows file open
    // dialog sends a WM_SETTEXT message with an empty
    // string to the file name edit line
    // this would overwritte our text when we would set
    // the default name in onInitDone, so we have to
    // remeber that this is the first SelChanged message
    // and set the default name here to overwrite the
    // windows setting
    InitialSetDefaultName();

    FilePickerEvent evt;
    m_FilePicker->fileSelectionChanged(evt);
}

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

void SAL_CALL CWinFileOpenImpl::onInitDone()
{
    m_Preview->setParent(m_hwndFileOpenDlg);

    // but now we have a valid parent handle
    m_HelpPopupWindow.setParent(m_hwndFileOpenDlg);

    // initialize controls from cache

    EnumParam enumParam(INIT_CUSTOM_CONTROLS,this);

    EnumChildWindows(
        m_hwndFileOpenDlgChild,
        CWinFileOpenImpl::EnumChildWndProc,
        (LPARAM)&enumParam);

    m_ExecuteFilePickerState->setHwnd(m_hwndFileOpenDlgChild);

    m_ExecuteFilePickerState->initFilePickerControls(
        m_NonExecuteFilePickerState->getControlCommand());

    m_FilePickerState = m_ExecuteFilePickerState;

    SetDefaultExtension();

    m_CustomControls->Align();

    m_CustomControls->SetFont(
        reinterpret_cast<HFONT>(SendMessageA(m_hwndFileOpenDlg, WM_GETFONT, 0, 0)));

    // call the parent function to center the
    // dialog to it's parent
    CFileOpenDialog::onInitDone();
}

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

void SAL_CALL CWinFileOpenImpl::onFolderChanged()
{
    FilePickerEvent evt;
    m_FilePicker->directoryChanged(evt);
}

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

void SAL_CALL CWinFileOpenImpl::onTypeChanged(sal_uInt32 nFilterIndex)
{
    SetDefaultExtension();

    FilePickerEvent evt;
    evt.ElementId = LISTBOX_FILTER;
    m_FilePicker->controlStateChanged(evt);
}

//-----------------------------------------------------------------------------------------
// onMessageCommand handler
//-----------------------------------------------------------------------------------------

sal_uInt32 SAL_CALL CWinFileOpenImpl::onCtrlCommand(
    HWND hwndDlg, sal_uInt16 ctrlId, sal_uInt16 notifyCode)
{
    SetDefaultExtension();

    if (ctrlId < ctlFirst)
    {
        FilePickerEvent evt;
        evt.ElementId = ctrlId;
        m_FilePicker->controlStateChanged(evt);
    }

    return 0;
}

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

LRESULT SAL_CALL CWinFileOpenImpl::onWMSize(HWND hwnd, WPARAM type, WORD width, WORD height)
{
    m_Preview->notifyParentSizeChanged();
    m_CustomControls->Align();
    m_FilePicker->dialogSizeChanged();
    return 0;
}

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

LRESULT SAL_CALL CWinFileOpenImpl::onWMShow(HWND hwnd, BOOL bShow, int fState)
{
    m_Preview->notifyParentShow(bShow);
    return 0;
}

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

LRESULT SAL_CALL CWinFileOpenImpl::onWMWindowPosChanged(HWND hwnd)
{
    LONG wl = GetWindowLong(hwnd,GWL_STYLE);
    m_Preview->notifyParentWindowPosChanged(wl & WS_VISIBLE);
    return 0;
}

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

LRESULT SAL_CALL CWinFileOpenImpl::onCustomControlHelpRequest(LPHELPINFO lphi)
{
    FilePickerEvent evt;
    evt.ElementId = lphi->iCtrlId;

    OUString aPopupHelpText = m_FilePicker->helpRequested(evt);

    if (aPopupHelpText.getLength())
    {
        m_HelpPopupWindow.setText(aPopupHelpText);

        DWORD dwMsgPos = GetMessagePos();
        m_HelpPopupWindow.show(LOWORD(dwMsgPos),HIWORD(dwMsgPos));
    }

    return 0;
}

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

void SAL_CALL CWinFileOpenImpl::onInitDialog(HWND hwndDlg, HWND hwndChild)
{
    // subclass the dialog window
    m_pfnOldDlgProc =
        reinterpret_cast< DLGPROC >(
            SetWindowLong( hwndDlg,
            DWL_DLGPROC,
            reinterpret_cast<DWORD>(SubClassFunc)));
}

//-----------------------------------------------------------------------------------------
// processing before showing the dialog
//-----------------------------------------------------------------------------------------

sal_Bool SAL_CALL CWinFileOpenImpl::preModal( )
{
    CFileOpenDialog::setFilter(
        makeWinFilterBuffer(*m_filterContainer.get()));

    return sal_True;
}

//-----------------------------------------------------------------------------------------
// processing after showing the dialog
//-----------------------------------------------------------------------------------------

void CWinFileOpenImpl::postModal(sal_Int16 nDialogResult)
{
    CFileOpenDialog::postModal(nDialogResult);
    m_FilePickerState = m_NonExecuteFilePickerState;
}

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

void SAL_CALL CWinFileOpenImpl::SetDefaultExtension()
{
    // !!! HACK !!!

    OSVERSIONINFOA  OSVerInfo;

    OSVerInfo.dwOSVersionInfoSize = sizeof( OSVERSIONINFOA );
    GetVersionExA( &OSVerInfo );

    // if windows 95/98
    sal_Bool bIsWin9x = ( VER_PLATFORM_WIN32_WINDOWS == OSVerInfo.dwPlatformId );

    HWND hwndChkSaveWithExt = GetDlgItem( m_hwndFileOpenDlgChild, 100 );

    if ( hwndChkSaveWithExt )
    {
        Any aAny = CheckboxGetState( hwndChkSaveWithExt );
        sal_Bool bChecked = *reinterpret_cast< const sal_Bool* >( aAny.getValue( ) );

        if ( bChecked )
        {
            sal_uInt32 nIndex = getSelectedFilterIndex( );

            OUString currentFilter;
            if ( nIndex > 0 )
            {
                // filter index of the base class starts with 1
                sal_Bool bRet = m_filterContainer->getFilter( nIndex - 1, currentFilter );

                if ( currentFilter.getLength( ) )
                {
                    OUString FilterExt;
                    m_filterContainer->getFilter( currentFilter, FilterExt );

                    sal_Int32 posOfPoint = FilterExt.indexOf( L'.' );
                    const sal_Unicode* pFirstExtStart = FilterExt.getStr( ) + posOfPoint + 1;

                    sal_Int32 posOfSemiColon = FilterExt.indexOf( L';' ) - 1;
                    if ( posOfSemiColon < 0 )
                        posOfSemiColon = FilterExt.getLength( ) - 1;

                    FilterExt = OUString( pFirstExtStart, posOfSemiColon - posOfPoint );

                    if ( bIsWin9x )
                    {
                        rtl::OString tmp = rtl::OUStringToOString( FilterExt, osl_getThreadTextEncoding( ) );

                        SendMessageA( m_hwndFileOpenDlg, CDM_SETDEFEXT, 0, (LPARAM)( tmp.getStr( ) ) );
                    }
                    else
                    {
                        SendMessageW( m_hwndFileOpenDlg, CDM_SETDEFEXT, 0, (LPARAM)( FilterExt.getStr( ) ) );
                    }
                }
            }
        }
        else
        {
            if ( bIsWin9x )
                SendMessageA( m_hwndFileOpenDlg, CDM_SETDEFEXT, 0, (LPARAM)"" );
            else
                SendMessageW( m_hwndFileOpenDlg, CDM_SETDEFEXT, 0, (LPARAM)L"");
        }
    }

    // !!! HACK !!!
}

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

void SAL_CALL CWinFileOpenImpl::InitialSetDefaultName()
{
    // manually setting the file name that appears
    // initially in the file-name-box of the file
    // open dialog (reason: see above setDefaultName)
    if (m_bInitialSelChanged && m_defaultName.getLength())
    {
        sal_Int32 edt1Id = edt1;

        // under W2k the there is a combobox instead
        // of an edit field for the file name edit field
        // the control id of this box is cmb13 and not
        // edt1 as before so we must use this id
        if (IsWindows2000Platform())
            edt1Id = cmb13;

        HWND hwndEdt1 = GetDlgItem(m_hwndFileOpenDlg, edt1Id);
        SetWindowTextW(hwndEdt1, m_defaultName.getStr());
    }

    m_bInitialSelChanged = sal_False;
}