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authorRĂ¼diger Timm <rt@openoffice.org>2003-04-08 14:40:31 +0000
committerRĂ¼diger Timm <rt@openoffice.org>2003-04-08 14:40:31 +0000
commitd58fe88f3568b46f42af098131b08973bafab6d6 (patch)
tree9d5a2f3639689a223139f0553ef06599e0c1a012 /extensions/source
parentc15605cd51b1efe2080e6f22b59dabfe26dc77e5 (diff)
INTEGRATION: CWS draw8 (1.4.48); FILE MERGED
2003/04/03 06:50:41 thb 1.4.48.2: #107835# Deregister if dialog failed 2003/03/18 18:52:30 thb 1.4.48.1: #107835# Register as close listener on active frame to prevent premature application close
Diffstat (limited to 'extensions/source')
-rw-r--r--extensions/source/scanner/scanwin.cxx352
1 files changed, 310 insertions, 42 deletions
diff --git a/extensions/source/scanner/scanwin.cxx b/extensions/source/scanner/scanwin.cxx
index ab9fc4d22e5f..05ca2a2e0e92 100644
--- a/extensions/source/scanner/scanwin.cxx
+++ b/extensions/source/scanner/scanwin.cxx
@@ -2,9 +2,9 @@
*
* $RCSfile: scanwin.cxx,v $
*
- * $Revision: 1.4 $
+ * $Revision: 1.5 $
*
- * last change: $Author: ka $ $Date: 2002-11-05 12:02:56 $
+ * last change: $Author: rt $ $Date: 2003-04-08 15:40:31 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
@@ -59,6 +59,46 @@
*
************************************************************************/
+#ifndef _COM_SUN_STAR_UNO_ANY_HXX_
+#include <com/sun/star/uno/Any.hxx>
+#endif
+
+#ifndef _COM_SUN_STAR_UNO_REFERENCE_HXX_
+#include <com/sun/star/uno/Reference.hxx>
+#endif
+
+#ifndef _COM_SUN_STAR_UTIL_XCLOSEABLE_HPP_
+#include <com/sun/star/util/XCloseable.hpp>
+#endif
+
+#ifndef _COM_SUN_STAR_UTIL_XCLOSEBROADCASTER_HPP_
+#include <com/sun/star/util/XCloseBroadcaster.hpp>
+#endif
+
+#ifndef _COM_SUN_STAR_UTIL_XCLOSELISTENER_HPP_
+#include <com/sun/star/util/XCloseListener.hpp>
+#endif
+
+#ifndef _COM_SUN_STAR_FRAME_XFRAME_HPP_
+#include <com/sun/star/frame/XFrame.hpp>
+#endif
+
+#ifndef _COM_SUN_STAR_FRAME_XDESKTOP_HPP_
+#include <com/sun/star/frame/XDesktop.hpp>
+#endif
+
+#ifndef _COM_SUN_STAR_BEANS_XPROPERTYSET_HPP_
+#include <com/sun/star/beans/XPropertySet.hpp>
+#endif
+
+#ifndef _CPPUHELPER_IMPLBASE1_HXX_
+#include <cppuhelper/implbase1.hxx>
+#endif
+
+#ifndef _COMPHELPER_PROCESSFACTORY_HXX_
+#include <comphelper/processfactory.hxx>
+#endif
+
#include <math.h>
#include <tools/svwin.h>
#include <tools/stream.hxx>
@@ -71,6 +111,8 @@
#include "scanner.hxx"
#include "twain/twain.h"
+using namespace ::com::sun::star;
+
// -----------
// - Defines -
// -----------
@@ -113,25 +155,35 @@ enum TwainState
// - ImpTwain -
// ------------
-class ImpTwain
-{
- ScannerManager* mpMgr;
- TW_IDENTITY aAppIdent;
- TW_IDENTITY aSrcIdent;
- Link aNotifyLink;
- DSMENTRYPROC pDSM;
- NAMESPACE_VOS( OModule )* pMod;
- ULONG nCurState;
+typedef ::cppu::WeakImplHelper1< ::com::sun::star::util::XCloseListener > CloseListenerBase;
- void ImplCreate();
- void ImplOpenSourceManager();
- void ImplOpenSource();
- BOOL ImplEnableSource();
- void ImplXfer();
- void ImplFallback( ULONG nEvent );
-
- DECL_LINK( ImplFallbackHdl, void* );
- DECL_LINK( ImplDestroyHdl, void* );
+class ImpTwain : public CloseListenerBase
+{
+ REF( com::sun::star::scanner::XScannerManager ) mxMgr;
+ ScannerManager* mpMgr;
+ TW_IDENTITY aAppIdent;
+ TW_IDENTITY aSrcIdent;
+ Link aNotifyLink;
+ DSMENTRYPROC pDSM;
+ NAMESPACE_VOS( OModule )* pMod;
+ ULONG nCurState;
+ bool mbCloseFrameOnExit;
+ uno::Reference< uno::XInterface > mxSelfRef;
+
+ void ImplCreate();
+ void ImplOpenSourceManager();
+ void ImplOpenSource();
+ BOOL ImplEnableSource();
+ void ImplXfer();
+ void ImplFallback( ULONG nEvent );
+ void ImplSendCloseEvent();
+ void ImplDeregisterCloseListener();
+ void ImplRegisterCloseListener();
+ uno::Reference< frame::XFrame > ImplGetActiveFrame();
+ uno::Reference< util::XCloseBroadcaster > ImplGetActiveFrameCloseBroadcaster();
+
+ DECL_LINK( ImplFallbackHdl, void* );
+ DECL_LINK( ImplDestroyHdl, void* );
public:
@@ -149,6 +201,13 @@ public:
BOOL SelectSource();
BOOL InitXfer();
+
+ // from util::XCloseListener
+ virtual void SAL_CALL queryClosing( const ::com::sun::star::lang::EventObject& Source, sal_Bool GetsOwnership ) throw (::com::sun::star::util::CloseVetoException, ::com::sun::star::uno::RuntimeException);
+ virtual void SAL_CALL notifyClosing( const ::com::sun::star::lang::EventObject& Source ) throw (::com::sun::star::uno::RuntimeException);
+
+ // from lang::XEventListener
+ virtual void SAL_CALL disposing( const ::com::sun::star::lang::EventObject& Source ) throw (::com::sun::star::uno::RuntimeException);
};
// ---------
@@ -188,14 +247,20 @@ LRESULT CALLBACK TwainMsgProc( int nCode, WPARAM wParam, LPARAM lParam )
// -----------------------------------------------------------------------------
ImpTwain::ImpTwain( ScannerManager* pMgr, const Link& rNotifyLink ) :
- mpMgr ( pMgr ),
- aNotifyLink ( rNotifyLink ),
- pDSM ( NULL ),
- pMod ( NULL ),
- hTwainWnd ( 0 ),
- hTwainHook ( 0 ),
- nCurState ( 1 )
+ // #107835# hold reference to ScannerManager, to prevent premature death
+ mxMgr ( REF(com::sun::star::scanner::XScannerManager)(
+ static_cast< OWeakObject* >(pMgr),
+ ::com::sun::star::uno::UNO_QUERY) ),
+ mpMgr ( pMgr ),
+ aNotifyLink ( rNotifyLink ),
+ pDSM ( NULL ),
+ pMod ( NULL ),
+ hTwainWnd ( 0 ),
+ hTwainHook ( 0 ),
+ nCurState ( 1 ),
+ mbCloseFrameOnExit ( false )
{
+ // setup TWAIN window
pImpTwainInstance = this;
aAppIdent.Id = 0;
@@ -206,24 +271,35 @@ ImpTwain::ImpTwain( ScannerManager* pMgr, const Link& rNotifyLink ) :
aAppIdent.ProtocolMajor = TWON_PROTOCOLMAJOR;
aAppIdent.ProtocolMinor = TWON_PROTOCOLMINOR;
aAppIdent.SupportedGroups = DG_IMAGE | DG_CONTROL;
- strcpy( aAppIdent.Version.Info, "6.0" );
- strcpy( aAppIdent.Manufacturer, "Sun Microsystems");
- strcpy( aAppIdent.ProductFamily,"Office");
- strcpy( aAppIdent.ProductName, "Office");
+ strncpy( aAppIdent.Version.Info, "6.1", 32 );
+ aAppIdent.Version.Info[32] = aAppIdent.Version.Info[33] = 0;
+ strncpy( aAppIdent.Manufacturer, "Sun Microsystems", 32 );
+ aAppIdent.Manufacturer[32] = aAppIdent.Manufacturer[33] = 0;
+ strncpy( aAppIdent.ProductFamily,"Office", 32 );
+ aAppIdent.ProductFamily[32] = aAppIdent.ProductFamily[33] = 0;
+ strncpy( aAppIdent.ProductName, "Office", 32 );
+ aAppIdent.ProductName[32] = aAppIdent.ProductName[33] = 0;
HWND hParentWnd = HWND_DESKTOP;
+
WNDCLASS aWc = { 0, &TwainWndProc, 0, sizeof( WNDCLASS ), GetModuleHandle( NULL ),
NULL, NULL, NULL, NULL, "TwainClass" };
RegisterClass( &aWc );
hTwainWnd = CreateWindowEx( WS_EX_TOPMOST, aWc.lpszClassName, "TWAIN", 0, 0, 0, 0, 0, hParentWnd, NULL, aWc.hInstance, 0 );
hTwainHook = SetWindowsHookEx( WH_GETMESSAGE, &TwainMsgProc, NULL, GetCurrentThreadId() );
+
+ // #107835# block destruction until ImplDestroyHdl is called
+ mxSelfRef = static_cast< ::cppu::OWeakObject* >(this);
}
// -----------------------------------------------------------------------------
ImpTwain::~ImpTwain()
{
+ // are we responsible for application shutdown?
+ if( mbCloseFrameOnExit )
+ ImplSendCloseEvent();
}
// -----------------------------------------------------------------------------
@@ -338,10 +414,21 @@ BOOL ImpTwain::ImplEnableSource()
aNotifyLink.Call( (void*) TWAIN_EVENT_SCANNING );
nCurState = 5;
+ // #107835# register as vetoable close listener, to prevent
+ // application to die under us
+ ImplRegisterCloseListener();
+
if( PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_USERINTERFACE, MSG_ENABLEDS, &aUI ) == TWRC_SUCCESS )
+ {
bRet = TRUE;
+ }
else
+ {
nCurState = 4;
+
+ // #107835# deregister as vetoable close listener, dialog failed
+ ImplDeregisterCloseListener();
+ }
}
return bRet;
@@ -370,7 +457,7 @@ BOOL ImpTwain::ImplHandleMsg( void* pMsg )
nCurState = 6;
ImplXfer();
- if( mpMgr && mpMgr->GetData() )
+ if( mxMgr.is() && mpMgr && mpMgr->GetData() )
nEvent = TWAIN_EVENT_XFER;
}
@@ -420,7 +507,7 @@ void ImpTwain::ImplXfer()
case( TWRC_XFERDONE ):
{
- if( mpMgr && hDIB )
+ if( mxMgr.is() && mpMgr && hDIB )
{
if( ( nXRes != -1 ) && ( nYRes != - 1 ) && ( nWidth != - 1 ) && ( nHeight != - 1 ) )
{
@@ -486,6 +573,9 @@ IMPL_LINK( ImpTwain, ImplFallbackHdl, void*, pData )
PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_USERINTERFACE, MSG_DISABLEDS, &aUI );
nCurState = 4;
+
+ // #107835# deregister as vetoable close listener
+ ImplDeregisterCloseListener();
}
break;
@@ -537,24 +627,198 @@ IMPL_LINK( ImpTwain, ImplDestroyHdl, void*, p )
if( hTwainHook )
UnhookWindowsHookEx( hTwainHook );
- delete this;
+ // #107835# permit destruction of ourselves (normally, refcount
+ // should drop to zero exactly here)
+ mxSelfRef = NULL;
pImpTwainInstance = NULL;
return 0L;
}
+// -----------------------------------------------------------------------------
+
+uno::Reference< frame::XFrame > ImpTwain::ImplGetActiveFrame()
+{
+ try
+ {
+ uno::Reference< lang::XMultiServiceFactory > xMgr( ::comphelper::getProcessServiceFactory() );
+
+ if( xMgr.is() )
+ {
+ // query desktop instance
+ uno::Reference< frame::XDesktop > xDesktop( xMgr->createInstance(
+ OUString::createFromAscii( "com.sun.star.frame.Desktop" ) ), uno::UNO_QUERY );
+
+ if( xDesktop.is() )
+ {
+ // query property set from desktop, which contains the currently active frame
+ uno::Reference< beans::XPropertySet > xDesktopProps( xDesktop, uno::UNO_QUERY );
+
+ if( xDesktopProps.is() )
+ {
+ uno::Any aActiveFrame;
+
+ try
+ {
+ aActiveFrame = xDesktopProps->getPropertyValue(
+ OUString::createFromAscii( "ActiveFrame" ) );
+ }
+ catch( const beans::UnknownPropertyException& )
+ {
+ // property unknown.
+ DBG_ERROR("ImpTwain::ImplGetActiveFrame: ActiveFrame property unknown, cannot determine active frame!");
+ return uno::Reference< frame::XFrame >();
+ }
+
+ uno::Reference< frame::XFrame > xActiveFrame;
+
+ if( (aActiveFrame >>= xActiveFrame) &&
+ xActiveFrame.is() )
+ {
+ return xActiveFrame;
+ }
+ }
+ }
+ }
+ }
+ catch( const uno::Exception& )
+ {
+ }
+
+ DBG_ERROR("ImpTwain::ImplGetActiveFrame: Could not determine active frame!");
+ return uno::Reference< frame::XFrame >();
+}
+
+// -----------------------------------------------------------------------------
+
+uno::Reference< util::XCloseBroadcaster > ImpTwain::ImplGetActiveFrameCloseBroadcaster()
+{
+ try
+ {
+ return uno::Reference< util::XCloseBroadcaster >( ImplGetActiveFrame(), uno::UNO_QUERY );
+ }
+ catch( const uno::Exception& )
+ {
+ }
+
+ DBG_ERROR("ImpTwain::ImplGetActiveFrameCloseBroadcaster: Could determine close broadcaster on active frame!");
+ return uno::Reference< util::XCloseBroadcaster >();
+}
+
+// -----------------------------------------------------------------------------
+
+void ImpTwain::ImplRegisterCloseListener()
+{
+ try
+ {
+ uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster(
+ ImplGetActiveFrameCloseBroadcaster() );
+
+ if( xCloseBroadcaster.is() )
+ {
+ xCloseBroadcaster->addCloseListener(this);
+ return; // successfully registered as a close listener
+ }
+ else
+ {
+ // interface unknown. don't register, then
+ DBG_ERROR("ImpTwain::ImplRegisterCloseListener: XFrame has no XCloseBroadcaster!");
+ return;
+ }
+ }
+ catch( const uno::Exception& )
+ {
+ }
+
+ DBG_ERROR("ImpTwain::ImplRegisterCloseListener: Could not register as close listener!");
+}
+
+// -----------------------------------------------------------------------------
+
+void ImpTwain::ImplDeregisterCloseListener()
+{
+ try
+ {
+ uno::Reference< util::XCloseBroadcaster > xCloseBroadcaster(
+ ImplGetActiveFrameCloseBroadcaster() );
+
+ if( xCloseBroadcaster.is() )
+ {
+ xCloseBroadcaster->removeCloseListener(this);
+ return; // successfully deregistered as a close listener
+ }
+ else
+ {
+ // interface unknown. don't deregister, then
+ DBG_ERROR("ImpTwain::ImplDeregisterCloseListener: XFrame has no XCloseBroadcaster!");
+ return;
+ }
+ }
+ catch( const uno::Exception& )
+ {
+ }
+
+ DBG_ERROR("ImpTwain::ImplDeregisterCloseListener: Could not deregister as close listener!");
+}
+
+// -----------------------------------------------------------------------------
+
+void SAL_CALL ImpTwain::queryClosing( const lang::EventObject& Source, sal_Bool GetsOwnership ) throw (util::CloseVetoException, uno::RuntimeException)
+{
+ // shall we re-send the close query later on?
+ mbCloseFrameOnExit = GetsOwnership;
+
+ // the sole purpose of this listener is to forbid closing of the listened-at frame
+ throw util::CloseVetoException();
+}
+
+// -----------------------------------------------------------------------------
+
+void SAL_CALL ImpTwain::notifyClosing( const lang::EventObject& Source ) throw (uno::RuntimeException)
+{
+ // should not happen
+ DBG_ERROR("ImpTwain::notifyClosing called, but we vetoed the closing before!");
+}
+
+// -----------------------------------------------------------------------------
+
+void SAL_CALL ImpTwain::disposing( const lang::EventObject& Source ) throw (uno::RuntimeException)
+{
+ // we're not holding any references to the frame, thus noop
+}
+
+// -----------------------------------------------------------------------------
+
+void ImpTwain::ImplSendCloseEvent()
+{
+ try
+ {
+ uno::Reference< util::XCloseable > xCloseable( ImplGetActiveFrame(), uno::UNO_QUERY );
+
+ if( xCloseable.is() )
+ xCloseable->close( true );
+ }
+ catch( const uno::Exception& )
+ {
+ }
+
+ DBG_ERROR("ImpTwain::ImplSendCloseEvent: Could not send required close broadcast!");
+}
+
+
// ---------
// - Twain -
// ---------
class Twain
{
- ScannerManager* mpMgr;
- REF( com::sun::star::lang::XEventListener ) mxListener;
- ImpTwain* mpImpTwain;
- TwainState meState;
+ REF( com::sun::star::scanner::XScannerManager ) mxMgr;
+ ScannerManager* mpMgr;
+ REF( com::sun::star::lang::XEventListener ) mxListener;
+ ImpTwain* mpImpTwain;
+ TwainState meState;
- DECL_LINK( ImpNotifyHdl, ImpTwain* );
+ DECL_LINK( ImpNotifyHdl, ImpTwain* );
public:
@@ -571,6 +835,7 @@ public:
// ------------------------------------------------------------------------
Twain::Twain() :
+ mxMgr (),
mpMgr ( NULL ),
mpImpTwain ( NULL ),
meState ( TWAIN_STATE_NONE )
@@ -591,7 +856,7 @@ BOOL Twain::SelectSource()
{
BOOL bRet;
- if( !mpImpTwain )
+ if( !mpImpTwain && mxMgr.is() )
{
meState = TWAIN_STATE_NONE;
mpImpTwain = new ImpTwain( mpMgr, LINK( this, Twain, ImpNotifyHdl ) );
@@ -611,6 +876,9 @@ BOOL Twain::PerformTransfer( ScannerManager* pMgr, const REF( com::sun::star::la
if( pMgr && !mpImpTwain )
{
+ // #107835# hold reference to ScannerManager, to prevent premature death
+ mxMgr = REF(com::sun::star::scanner::XScannerManager)(static_cast< OWeakObject* >(pMgr),
+ ::com::sun::star::uno::UNO_QUERY),
mpMgr = pMgr;
mxListener = rxListener;
meState = TWAIN_STATE_NONE;
@@ -644,7 +912,7 @@ IMPL_LINK( Twain, ImpNotifyHdl, ImpTwain*, nEvent )
mpImpTwain = NULL;
}
- if( mpMgr && mxListener.is() )
+ if( mxMgr.is() && mpMgr && mxListener.is() )
mxListener->disposing( com::sun::star::lang::EventObject( REF( XInterface )( static_cast< OWeakObject* >( mpMgr ) ) ) );
mxListener = REF( com::sun::star::lang::XEventListener )();
@@ -653,7 +921,7 @@ IMPL_LINK( Twain, ImpNotifyHdl, ImpTwain*, nEvent )
case( TWAIN_EVENT_XFER ):
{
- if( mpImpTwain )
+ if( mxMgr.is() && mpMgr && mpImpTwain )
{
meState = ( ( mpMgr && mpMgr->GetData() ) ? TWAIN_STATE_DONE : TWAIN_STATE_CANCELED );