xref: /trunk/main/odk/examples/cpp/counter/counter.cxx (revision 34dd1e25)
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11  *   http://www.apache.org/licenses/LICENSE-2.0
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13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
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16  * KIND, either express or implied.  See the License for the
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18  * under the License.
19  *
20  *************************************************************/
21 
22 
23 
24 /*************************************************************************
25  *************************************************************************
26  *
27  * service implementation:	 foo.Counter
28  * exported interfaces:		 foo.XCounter
29  *
30  * simple example component implementing a counter
31  *
32  *************************************************************************
33  *************************************************************************/
34 
35 #include <stdio.h>
36 #include <rtl/ustring.hxx>
37 #include <cppuhelper/queryinterface.hxx> // helper for queryInterface() impl
38 #include <cppuhelper/factory.hxx> // helper for component factory
39 // generated c++ interfaces
40 #include <com/sun/star/lang/XSingleServiceFactory.hpp>
41 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
42 #include <com/sun/star/lang/XServiceInfo.hpp>
43 #include <com/sun/star/registry/XRegistryKey.hpp>
44 #include <foo/XCountable.hpp>
45 
46 #define SERVICENAME "foo.Counter"
47 #define IMPLNAME	"com.sun.star.comp.example.cpp.Counter"
48 
49 using namespace ::rtl;
50 using namespace ::osl;
51 using namespace ::cppu;
52 using namespace ::com::sun::star::uno;
53 using namespace ::com::sun::star::lang;
54 using namespace ::com::sun::star::registry;
55 using namespace ::foo;
56 
57 
58 //========================================================================
59 class MyCounterImpl
60 	: public XCountable
61 	, public XServiceInfo
62 {
63 	// to obtain other services if needed
64 	Reference< XMultiServiceFactory > m_xServiceManager;
65 
66 	sal_Int32 m_nRefCount;
67 	sal_Int32 m_nCount;
68 
69 public:
MyCounterImpl(const Reference<XMultiServiceFactory> & xServiceManager)70 	MyCounterImpl( const Reference< XMultiServiceFactory > & xServiceManager )
71 		: m_xServiceManager( xServiceManager ), m_nRefCount( 0 )
72 		{ printf( "< MyCounterImpl ctor called >\n" ); }
~MyCounterImpl()73 	~MyCounterImpl()
74 		{ printf( "< MyCounterImpl dtor called >\n" ); }
75 
76 	// XInterface implementation
acquire()77 	virtual void SAL_CALL acquire() throw ()
78 		{ ++m_nRefCount; }
release()79 	virtual void SAL_CALL release() throw ()
80 		{ if (! --m_nRefCount) delete this; }
queryInterface(const Type & rType)81 	virtual Any SAL_CALL queryInterface( const Type & rType ) throw (RuntimeException)
82 		{ return cppu::queryInterface(rType,
83         							  static_cast< XInterface* >( static_cast< XServiceInfo* >( this ) ),
84         							  static_cast< XCountable* >( this ),
85                                       static_cast< XServiceInfo* >( this ) ); }
86 
87     // XServiceInfo	implementation
88     virtual OUString SAL_CALL getImplementationName(  ) throw(RuntimeException);
89     virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) throw(RuntimeException);
90     virtual Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) throw(RuntimeException);
91     static Sequence< OUString > SAL_CALL getSupportedServiceNames_Static(  );
92 
93 	// XCountable implementation
getCount()94 	virtual sal_Int32 SAL_CALL getCount() throw (RuntimeException)
95 		{ return m_nCount; }
setCount(sal_Int32 nCount)96 	virtual void SAL_CALL setCount( sal_Int32 nCount ) throw (RuntimeException)
97 		{ m_nCount = nCount; }
increment()98 	virtual sal_Int32 SAL_CALL increment() throw (RuntimeException)
99 		{ return (++m_nCount); }
decrement()100 	virtual sal_Int32 SAL_CALL decrement() throw (RuntimeException)
101 		{ return (--m_nCount); }
102 };
103 
104 //*************************************************************************
getImplementationName()105 OUString SAL_CALL MyCounterImpl::getImplementationName(  )
106 	throw(RuntimeException)
107 {
108 	return OUString( RTL_CONSTASCII_USTRINGPARAM(IMPLNAME) );
109 }
110 
111 //*************************************************************************
supportsService(const OUString & ServiceName)112 sal_Bool SAL_CALL MyCounterImpl::supportsService( const OUString& ServiceName )
113 	throw(RuntimeException)
114 {
115 	Sequence< OUString > aSNL = getSupportedServiceNames();
116 	const OUString * pArray = aSNL.getArray();
117 	for( sal_Int32 i = 0; i < aSNL.getLength(); i++ )
118 		if( pArray[i] == ServiceName )
119 			return sal_True;
120 	return sal_False;
121 }
122 
123 //*************************************************************************
getSupportedServiceNames()124 Sequence<OUString> SAL_CALL MyCounterImpl::getSupportedServiceNames(  )
125 	throw(RuntimeException)
126 {
127 	return getSupportedServiceNames_Static();
128 }
129 
130 //*************************************************************************
getSupportedServiceNames_Static()131 Sequence<OUString> SAL_CALL MyCounterImpl::getSupportedServiceNames_Static(  )
132 {
133 	OUString aName( RTL_CONSTASCII_USTRINGPARAM(SERVICENAME) );
134 	return Sequence< OUString >( &aName, 1 );
135 }
136 
137 
138 
139 
140 /**
141  * Function to create a new component instance; is needed by factory helper implementation.
142  * @param xMgr service manager to if the components needs other component instances
143  */
MyCounterImpl_create(const Reference<XMultiServiceFactory> & xMgr)144 Reference< XInterface > SAL_CALL MyCounterImpl_create(
145 	const Reference< XMultiServiceFactory > & xMgr )
146 {
147 	return Reference<XInterface>(static_cast<XCountable*>(new MyCounterImpl(xMgr)));
148 }
149 
150 
151 //#########################################################################
152 //#### EXPORTED ###########################################################
153 //#########################################################################
154 
155 
156 /**
157  * Gives the environment this component belongs to.
158  */
component_getImplementationEnvironment(const sal_Char ** ppEnvTypeName,uno_Environment ** ppEnv)159 extern "C" SAL_DLLPUBLIC_EXPORT void SAL_CALL component_getImplementationEnvironment(const sal_Char ** ppEnvTypeName, uno_Environment ** ppEnv)
160 {
161 	*ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
162 }
163 
164 /**
165  * This function creates an implementation section in the registry and another subkey
166  *
167  * for each supported service.
168  * @param pServiceManager   the service manager
169  * @param pRegistryKey      the registry key
170  */
171 // extern "C" SAL_DLLPUBLIC_EXPORT sal_Bool SAL_CALL component_writeInfo(void * pServiceManager, void * pRegistryKey)
172 // {
173 // 	sal_Bool result = sal_False;
174 
175 // 	if (pRegistryKey)
176 // 	{
177 // 		try
178 // 		{
179 // 			Reference< XRegistryKey > xNewKey(
180 // 				reinterpret_cast< XRegistryKey * >( pRegistryKey )->createKey(
181 // 					OUString( RTL_CONSTASCII_USTRINGPARAM("/" IMPLNAME "/UNO/SERVICES") ) ) );
182 
183 // 			const Sequence< OUString > & rSNL =
184 // 				MyCounterImpl::getSupportedServiceNames_Static();
185 // 			const OUString * pArray = rSNL.getConstArray();
186 // 			for ( sal_Int32 nPos = rSNL.getLength(); nPos--; )
187 // 				xNewKey->createKey( pArray[nPos] );
188 
189 // 			return sal_True;
190 // 		}
191 // 		catch (InvalidRegistryException &)
192 // 		{
193 // 			// we should not ignore exceptions
194 // 		}
195 // 	}
196 // 	return result;
197 // }
198 
199 /**
200  * This function is called to get service factories for an implementation.
201  *
202  * @param pImplName       name of implementation
203  * @param pServiceManager a service manager, need for component creation
204  * @param pRegistryKey    the registry key for this component, need for persistent data
205  * @return a component factory
206  */
component_getFactory(const sal_Char * pImplName,void * pServiceManager,void * pRegistryKey)207 extern "C" SAL_DLLPUBLIC_EXPORT void * SAL_CALL component_getFactory(const sal_Char * pImplName, void * pServiceManager, void * pRegistryKey)
208 {
209 	void * pRet = 0;
210 
211 	if (rtl_str_compare( pImplName, IMPLNAME ) == 0)
212 	{
213 		Reference< XSingleServiceFactory > xFactory( createSingleFactory(
214 			reinterpret_cast< XMultiServiceFactory * >( pServiceManager ),
215 			OUString( RTL_CONSTASCII_USTRINGPARAM(IMPLNAME) ),
216 			MyCounterImpl_create,
217 			MyCounterImpl::getSupportedServiceNames_Static() ) );
218 
219 		if (xFactory.is())
220 		{
221 			xFactory->acquire();
222 			pRet = xFactory.get();
223 		}
224 	}
225 
226 	return pRet;
227 }
228