office-gobmx/dtrans/test/win32/dnd/atlwindow.cxx

/*************************************************************************
 *
 *  $RCSfile: atlwindow.cxx,v $
 *
 *  $Revision: 1.4 $
 *
 *  last change: $Author: jl $ $Date: 2001-02-20 12:55:53 $
 *
 *  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): _______________________________________
 *
 *
 ************************************************************************/

#include <com/sun/star/uno/Reference.h>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/datatransfer/dnd/XDropTarget.hpp>
#include <com/sun/star/datatransfer/dnd/DNDConstants.hpp>

#include <cppuhelper/servicefactory.hxx>
#include <rtl/string.h>

#include "atlwindow.hxx"
#include "targetlistener.hxx"
#include "sourcelistener.hxx"
#include "transferable.hxx"
#include <map>

#include <winbase.h>
using namespace com::sun::star::lang;
using namespace com::sun::star::datatransfer::dnd;
using namespace com::sun::star::datatransfer::dnd::DNDConstants;
using namespace cppu;
using namespace rtl;
using namespace std;

LRESULT APIENTRY EditSubclassProc( HWND hwnd, UINT uMsg,WPARAM wParam, LPARAM lParam) ;


extern Reference< XMultiServiceFactory > MultiServiceFactory;
DWORD WINAPI MTAFunc(LPVOID pParams);

char* szSTAWin= "XDragSource::executeDrag is called from the same "
                "OLE STA thread that created the window.";
char* szMTAWin= "XDragSource::executeDrag is called from a MTA thread "
                "that did not create the window.";

WNDPROC wpOrigEditProc;

map<HWND, HWND> mapEditToMainWnd;

LRESULT AWindow::OnClose(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
    Reference<XComponent> xcompSource( m_xDragSource, UNO_QUERY);

    PostQuitMessage(0);


    m_xDropTarget=0;
    m_xDragSource=0;


     // Remove the subclass from the edit control.
    ::SetWindowLong(m_hwndEdit, GWL_WNDPROC,
                (LONG) wpOrigEditProc);

    return 0;
}


LRESULT AWindow::OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
    // Prepare the EDIT control
    m_hwndEdit = CreateWindowA(
        "EDIT",     // predefined class
        NULL,       // no window title
        WS_CHILD | WS_VISIBLE | WS_VSCROLL |
            ES_LEFT | ES_MULTILINE | ES_AUTOVSCROLL,
        0, 0, 0, 0, // set size in WM_SIZE message
        m_hWnd,       // parent window
        (HMENU) NULL, // edit control ID
        (HINSTANCE) GetWindowLong( GWL_HINSTANCE),
        NULL);

    // the map is used in the window procedure for the edit window to associate the
    // it to the right main window ( AWindow)
    mapEditToMainWnd[m_hwndEdit]= m_hWnd;
    // Superclass the edit window, because we want to process mouse messages
    wpOrigEditProc = (WNDPROC) ::SetWindowLongA(m_hwndEdit,
                GWL_WNDPROC, (LONG) EditSubclassProc);


    // Add text to the window.
    if( m_isMTA)
        ::SendMessageA(m_hwndEdit, WM_SETTEXT, 0, (LPARAM) szMTAWin);
    else
        ::SendMessageA(m_hwndEdit, WM_SETTEXT, 0, (LPARAM) szSTAWin);


    // create the DragSource
    Reference< XInterface> xint= MultiServiceFactory->createInstance(OUString(L"com.sun.star.datatransfer.dnd.OleDragAndDropSource"));
    m_xDragSource= Reference<XDragSource>( xint, UNO_QUERY);
    Reference<XInitialization> xInit( xint, UNO_QUERY);

    Any ar[2];
    ar[1]<<= (sal_uInt32)m_hWnd;
    xInit->initialize( Sequence<Any>( ar, 2) );

    //create the DropTarget
    Reference< XInterface> xintTarget= MultiServiceFactory->createInstance(OUString(L"com.sun.star.datatransfer.dnd.OleDragAndDropTarget"));
    m_xDropTarget= Reference<XDropTarget>( xintTarget, UNO_QUERY);
    Reference<XInitialization> xInitTarget( xintTarget, UNO_QUERY);

    Any any;
    any <<= (sal_uInt32)m_hWnd;
    xInitTarget->initialize( Sequence<Any>( &any, 1) );


    m_xDropTarget->addDropTargetListener( static_cast<XDropTargetListener*>
        ( new DropTargetListener( m_hwndEdit)) );
//  // make this window tho a drop target
    m_xDropTarget->setActive(sal_True);

    return 0;
}

// When the mouse is dragged for a second than a drag is initiated
LRESULT AWindow::OnMouseAction(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
    if( uMsg== WM_LBUTTONDOWN)
    {
        SetTimer( 1, 1000);
    }

    else if( uMsg == WM_LBUTTONUP)
    {
        KillTimer(  1);
    }

    return 0;
}

LRESULT AWindow::OnTimer(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
    HRESULT hr;
    USES_CONVERSION;
    KillTimer( 1);
    if(m_xDragSource.is())
    {

        //Get the Text out of the Edit window
        int length= (int)::SendMessageA( m_hwndEdit, WM_GETTEXTLENGTH, 0, 0);
        char * pBuffer= new char[length + 1];
        ZeroMemory( pBuffer, length + 1);
        ::SendMessageA( m_hwndEdit, WM_GETTEXT, length, (LPARAM) pBuffer);


        // call XDragSource::executeDrag from an MTA
        if( m_isMTA )
        {
            DWORD mtaThreadId;
            ThreadData data;
            data.source= m_xDragSource;
            data.transferable= static_cast<XTransferable*>( new CTransferable( A2W(pBuffer)));
            data.evtThreadReady= CreateEvent( NULL, FALSE, FALSE, NULL);

            HANDLE hThread= CreateThread( NULL, 0, MTAFunc, &data, 0, &mtaThreadId);
            // We must wait until the thread copied the ThreadData structure
            WaitForSingleObject( data.evtThreadReady, INFINITE);
            CloseHandle( data.evtThreadReady);
        }
        else
        {
            Reference<XTransferable> data( static_cast<XTransferable*>( new CTransferable( A2W(pBuffer))) );

            m_xDragSource->startDrag( DragGestureEvent(),
                ACTION_LINK|ACTION_MOVE|ACTION_COPY,
                0,
                0,
                data,
                Reference<XDragSourceListener>( static_cast<XDragSourceListener*>(new DragSourceListener() ) ) );
        }

        delete[] pBuffer;
    }

    return 0;
}

LRESULT AWindow::OnSize(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
    // Make the edit control the size of the window's
    // client area.
    ::MoveWindow(m_hwndEdit,
        0, 0,           // starting x- and y-coordinates
        LOWORD(lParam), // width of client area
        HIWORD(lParam), // height of client area
        TRUE);          // repaint window

    return 0;
}
LRESULT AWindow::OnFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
    ::SetFocus(m_hwndEdit);
    return 0;
}



// Subclass procedure for EDIT window
LRESULT APIENTRY EditSubclassProc( HWND hwnd, UINT uMsg,WPARAM wParam, LPARAM lParam)
{

    if( uMsg >= WM_MOUSEFIRST && uMsg <= WM_MOUSELAST)
    {
        HWND hAWindow= mapEditToMainWnd[hwnd];
        ::SendMessage( hAWindow, uMsg, wParam, lParam);

    }
    return CallWindowProc( wpOrigEditProc, hwnd, uMsg,
        wParam, lParam);
}