include/vbahelper/vbaeventshelperbase.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_VBAHELPER_VBAEVENTSHELPERBASE_HXX
  21 #define INCLUDED_VBAHELPER_VBAEVENTSHELPERBASE_HXX
  22
  23 #include <deque>
  24 #include <exception>
  25 #include <map>
  26 #include <unordered_map>
  27
  28 #include <com/sun/star/document/XEventListener.hpp>
  29 #include <com/sun/star/lang/EventObject.hpp>
  30 #include <com/sun/star/lang/XServiceInfo.hpp>
  31 #include <com/sun/star/lang/IllegalArgumentException.hpp>
  32 #include <com/sun/star/script/vba/XVBAEventProcessor.hpp>
  33 #include <com/sun/star/uno/Any.hxx>
  34 #include <com/sun/star/uno/Reference.hxx>
  35 #include <com/sun/star/uno/RuntimeException.hpp>
  36 #include <com/sun/star/uno/Sequence.hxx>
  37 #include <com/sun/star/util/VetoException.hpp>
  38 #include <com/sun/star/util/XChangesListener.hpp>
  39 #include <cppuhelper/implbase.hxx>
  40 #include <rtl/ustring.hxx>
  41 #include <sal/types.h>
  42 #include <vbahelper/vbadllapi.h>
  43
  44 namespace com { namespace sun { namespace star {
  45     namespace document { struct EventObject; }
  46     namespace frame { class XModel; }
  47     namespace script { namespace vba { class XVBAModuleInfo; } }
  48     namespace uno { class XComponentContext; }
  49     namespace util { struct ChangesEvent; }
  50 } } }
  51
  52 class SfxObjectShell;
  53
  54 typedef ::cppu::WeakImplHelper<
  55     css::script::vba::XVBAEventProcessor,
  56     css::document::XEventListener,
  57     css::util::XChangesListener,
  58     css::lang::XServiceInfo > VbaEventsHelperBase_BASE;
  59
  60 class VBAHELPER_DLLPUBLIC VbaEventsHelperBase : public VbaEventsHelperBase_BASE
  61 {
  62 public:
  63     VbaEventsHelperBase(
  64         const css::uno::Sequence< css::uno::Any >& rArgs,
  65         const css::uno::Reference< css::uno::XComponentContext >& xContext );
  66     virtual ~VbaEventsHelperBase() override;
  67
  68     // script::vba::XVBAEventProcessor
  69     virtual sal_Bool SAL_CALL hasVbaEventHandler( sal_Int32 nEventId, const css::uno::Sequence< css::uno::Any >& rArgs ) throw (css::lang::IllegalArgumentException, css::uno::RuntimeException, std::exception) override;
  70     virtual sal_Bool SAL_CALL processVbaEvent( sal_Int32 nEventId, const css::uno::Sequence< css::uno::Any >& rArgs ) throw (css::lang::IllegalArgumentException, css::util::VetoException, css::uno::RuntimeException, std::exception) override;
  71
  72     // document::XEventListener
  73     virtual void SAL_CALL notifyEvent( const css::document::EventObject& rEvent ) throw (css::uno::RuntimeException, std::exception) override;
  74
  75     // util::XChangesListener
  76     virtual void SAL_CALL changesOccurred( const css::util::ChangesEvent& rEvent ) throw (css::uno::RuntimeException, std::exception) override;
  77
  78     // lang::XEventListener
  79     virtual void SAL_CALL disposing( const css::lang::EventObject& rEvent ) throw (css::uno::RuntimeException, std::exception) override;
  80
  81     sal_Bool SAL_CALL supportsService(OUString const & ServiceName)
  82         throw (css::uno::RuntimeException, std::exception) override;
  83
  84     // little helpers ---------------------------------------------------------
  85
  86     /** Helper to execute event handlers without throwing any exceptions. */
  87     void processVbaEventNoThrow( sal_Int32 nEventId, const css::uno::Sequence< css::uno::Any >& rArgs );
  88
  89     /** Throws, if the passed sequence does not contain a value at the specified index. */
  90     static inline void checkArgument( const css::uno::Sequence< css::uno::Any >& rArgs, sal_Int32 nIndex ) throw (css::lang::IllegalArgumentException)
  91         { if( (nIndex < 0) || (nIndex >= rArgs.getLength()) ) throw css::lang::IllegalArgumentException(); }
  92
  93     /** Throws, if the passed sequence does not contain a value of a specific at the specified index. */
  94     template< typename Type >
  95     static inline void checkArgumentType( const css::uno::Sequence< css::uno::Any >& rArgs, sal_Int32 nIndex ) throw (css::lang::IllegalArgumentException)
  96         { checkArgument( rArgs, nIndex ); if( !rArgs[ nIndex ].has< Type >() ) throw css::lang::IllegalArgumentException(); }
  97
  98 protected:
  99
 100
 101     struct EventHandlerInfo
 102     {
 103         sal_Int32 mnEventId;
 104         sal_Int32 mnModuleType;
 105         OUString maMacroName;
 106         sal_Int32 mnCancelIndex;
 107         css::uno::Any maUserData;
 108     };
 109
 110     /** Registers a supported event handler.
 111
 112         @param nEventId  Event identifier from com.sun.star.script.vba.VBAEventId.
 113         @param nModuleType  Type of the module containing the event handler.
 114         @param pcMacroName  Name of the associated VBA event handler macro.
 115         @param nCancelIndex  0-based index of Cancel parameter, or -1.
 116         @param rUserData  User data for free usage in derived implementations. */
 117     void registerEventHandler(
 118             sal_Int32 nEventId,
 119             sal_Int32 nModuleType,
 120             const sal_Char* pcMacroName,
 121             sal_Int32 nCancelIndex = -1,
 122             const css::uno::Any& rUserData = css::uno::Any() );
 123
 124
 125     struct EventQueueEntry
 126     {
 127         sal_Int32 mnEventId;
 128         css::uno::Sequence< css::uno::Any > maArgs;
 129         inline /*implicit*/ EventQueueEntry( sal_Int32 nEventId ) : mnEventId( nEventId ) {}
 130         inline EventQueueEntry( sal_Int32 nEventId, const css::uno::Sequence< css::uno::Any >& rArgs ) : mnEventId( nEventId ), maArgs( rArgs ) {}
 131     };
 132     typedef ::std::deque< EventQueueEntry > EventQueue;
 133
 134     /** Derived classes do additional prpeparations and return whether the
 135         event handler has to be called. */
 136     virtual bool implPrepareEvent(
 137         EventQueue& rEventQueue,
 138         const EventHandlerInfo& rInfo,
 139         const css::uno::Sequence< css::uno::Any >& rArgs ) throw (css::uno::RuntimeException) = 0;
 140
 141     /** Derived classes have to return the argument list for the specified VBA event handler. */
 142     virtual css::uno::Sequence< css::uno::Any > implBuildArgumentList(
 143         const EventHandlerInfo& rInfo,
 144         const css::uno::Sequence< css::uno::Any >& rArgs ) throw (css::lang::IllegalArgumentException, css::uno::RuntimeException, std::exception) = 0;
 145
 146     /** Derived classes may do additional postprocessing. Called even if the
 147         event handler does not exist, or if an error occurred during execution. */
 148     virtual void implPostProcessEvent(
 149         EventQueue& rEventQueue,
 150         const EventHandlerInfo& rInfo,
 151         bool bCancel ) throw (css::uno::RuntimeException) = 0;
 152
 153     /** Derived classes have to return the name of the Basic document module. */
 154     virtual OUString implGetDocumentModuleName(
 155         const EventHandlerInfo& rInfo,
 156         const css::uno::Sequence< css::uno::Any >& rArgs ) const
 157             throw (css::lang::IllegalArgumentException,
 158                    css::uno::RuntimeException) = 0;
 159
 160 private:
 161     typedef ::std::map< sal_Int32, OUString > ModulePathMap;
 162
 163     /** Starts listening at the document model. */
 164     void startListening();
 165     /** Stops listening at the document model. */
 166     void stopListening();
 167
 168     /** Returns the event handler info struct for the specified event, or throws. */
 169     const EventHandlerInfo& getEventHandlerInfo( sal_Int32 nEventId ) const throw (css::lang::IllegalArgumentException);
 170
 171     /** Searches the event handler in the document and returns its full script path. */
 172     OUString getEventHandlerPath(
 173         const EventHandlerInfo& rInfo,
 174         const css::uno::Sequence< css::uno::Any >& rArgs ) throw (css::lang::IllegalArgumentException, css::uno::RuntimeException, std::exception);
 175
 176     /** On first call, accesses the Basic library containing the VBA source code. */
 177     void ensureVBALibrary() throw (css::uno::RuntimeException);
 178
 179     /** Returns the type of the Basic module with the specified name. */
 180     sal_Int32 getModuleType( const OUString& rModuleName ) throw (css::uno::RuntimeException);
 181
 182     /** Updates the map containing paths to event handlers for a Basic module. */
 183     ModulePathMap& updateModulePathMap( const OUString& rModuleName ) throw (css::uno::RuntimeException, std::exception);
 184
 185 protected:
 186     css::uno::Reference< css::frame::XModel > mxModel;
 187     SfxObjectShell* mpShell;
 188
 189 private:
 190     typedef std::map< sal_Int32, EventHandlerInfo > EventHandlerInfoMap;
 191     typedef std::unordered_map< OUString, ModulePathMap, OUStringHash > EventHandlerPathMap;
 192
 193     EventHandlerInfoMap maEventInfos;
 194     EventHandlerPathMap maEventPaths;
 195     css::uno::Reference< css::script::vba::XVBAModuleInfo > mxModuleInfos;
 196     OUString maLibraryName;
 197     bool mbDisposed;
 198 };
 199
 200
 201 #endif
 202
 203 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */