1 /**************************************************************
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
6  * regarding copyright ownership.  The ASF licenses this file
7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  *
20  *************************************************************/
21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_cppuhelper.hxx"
26 
27 #include <osl/mutex.hxx>
28 
29 #include <cppuhelper/weakref.hxx>
30 #include <cppuhelper/weak.hxx>
31 #include <cppuhelper/stdidlclass.hxx>
32 
33 #include <com/sun/star/reflection/XIdlClassProvider.hpp>
34 #include <com/sun/star/reflection/XIdlReflection.hpp>
35 #include <com/sun/star/uno/XComponentContext.hpp>
36 #include <com/sun/star/uno/DeploymentException.hpp>
37 #include <com/sun/star/beans/XPropertySet.hpp>
38 
39 using namespace com::sun::star;
40 using namespace com::sun::star::uno;
41 using namespace com::sun::star::lang;
42 using namespace com::sun::star::reflection;
43 using namespace rtl;
44 
45 namespace cppu {
46 
47 /*---------------------------------------------------------
48 *	This helper class implements XIdlClass. Is used by
49 *	createStdIdlClass()
50 *---------------------------------------------------------*/
51 class OStdIdlClass :
52 			public OWeakObject,
53 			public XIdlClass,
54 			public XIdlClassProvider
55 {
56 public:
57 	OStdIdlClass(
58 					const Reference < XMultiServiceFactory > &rSMgr ,
59 					const OUString & sImplementationName ,
60 					const Reference < XIdlClass > & rSuperClass,
61 					const Sequence < OUString > &seq
62 				) SAL_THROW( () );
63 
64 	// XInterface
65 	Any					SAL_CALL queryInterface( const ::com::sun::star::uno::Type & rType )
66 		throw(::com::sun::star::uno::RuntimeException);
67 
acquire()68 	void 				SAL_CALL acquire() throw() 	 { OWeakObject::acquire(); }
release()69 	void 				SAL_CALL release() throw()	 { OWeakObject::release(); }
70 
71 	// XIdlClassProvider
72     Sequence< Reference < XIdlClass > > SAL_CALL getIdlClasses(void)
73 		throw (RuntimeException);
74 
75     // XIdlClass
getClasses()76     virtual Sequence< Reference< XIdlClass > > SAL_CALL getClasses(  ) throw(RuntimeException)
77     									{ return Sequence < Reference < XIdlClass > > (); }
getClass(const::rtl::OUString &)78     virtual Reference< XIdlClass > SAL_CALL getClass( const ::rtl::OUString& ) throw(RuntimeException)
79     									{ return Reference < XIdlClass > (); }
equals(const Reference<XIdlClass> & Type)80     virtual sal_Bool SAL_CALL equals( const Reference< XIdlClass >& Type ) throw(RuntimeException)
81     									{ return getName() == Type->getName(); }
isAssignableFrom(const Reference<XIdlClass> & xType)82     virtual sal_Bool SAL_CALL isAssignableFrom( const Reference< XIdlClass >& xType ) throw(RuntimeException)
83     									{ return equals( xType ); }
getTypeClass()84     virtual TypeClass SAL_CALL getTypeClass(  ) throw(RuntimeException)
85     									{ return TypeClass_UNKNOWN; }
getName()86     virtual OUString SAL_CALL getName(  ) throw(RuntimeException)
87     									{ return m_sImplementationName; }
getUik()88     virtual Uik SAL_CALL getUik(  ) throw(RuntimeException)
89     									{ return Uik(); }
getSuperclasses()90     virtual Sequence< Reference< XIdlClass > > SAL_CALL getSuperclasses(  ) throw(RuntimeException)
91     									{ return m_seqSuperClasses; }
92     virtual Sequence< Reference< XIdlClass > > SAL_CALL getInterfaces(  ) throw(RuntimeException);
93 
getComponentType()94     virtual Reference< XIdlClass > SAL_CALL getComponentType(  ) throw(RuntimeException)
95     									{ return Reference < XIdlClass > (); }
getField(const::rtl::OUString &)96     virtual Reference< XIdlField > SAL_CALL getField( const ::rtl::OUString& ) throw(RuntimeException)
97     									{ return Reference < XIdlField > (); }
getFields()98     virtual Sequence< Reference< XIdlField > > SAL_CALL getFields(  ) throw(RuntimeException)
99     									{ return Sequence< Reference < XIdlField > > (); }
getMethod(const::rtl::OUString &)100     virtual Reference< XIdlMethod > SAL_CALL getMethod( const ::rtl::OUString& ) throw(RuntimeException)
101     									{ return Reference < XIdlMethod > (); }
getMethods()102     virtual Sequence< Reference< XIdlMethod > > SAL_CALL getMethods(  ) throw(RuntimeException)
103     									{ return Sequence < Reference < XIdlMethod > > (); }
getArray()104     virtual Reference< XIdlArray > SAL_CALL getArray(  ) throw(RuntimeException)
105     									{ return Reference < XIdlArray > (); }
createObject(Any &)106     virtual void SAL_CALL createObject( Any& ) throw(RuntimeException) {}
107 
108 private:
109 	OUString 								m_sImplementationName;
110 	Sequence < OUString >					m_seqSupportedInterface;
111 	Sequence < Reference < XIdlClass > > 	m_seqSuperClasses;
112 	Reference < XMultiServiceFactory >		m_rSMgr;
113 
114     Reference< XIdlReflection > m_xCorefl;
115     Reference< XIdlReflection > const & get_corefl() SAL_THROW( (RuntimeException) );
116 };
117 
get_corefl()118 Reference< XIdlReflection > const & OStdIdlClass::get_corefl()
119     SAL_THROW( (RuntimeException) )
120 {
121     if (! m_xCorefl.is())
122     {
123         if( m_rSMgr.is() )
124         {
125             Reference< beans::XPropertySet > xProps( m_rSMgr, UNO_QUERY );
126             OSL_ASSERT( xProps.is() );
127             if (xProps.is())
128             {
129                 Reference< XComponentContext > xContext;
130                 xProps->getPropertyValue(
131                     OUString( RTL_CONSTASCII_USTRINGPARAM("DefaultContext") ) ) >>= xContext;
132                 OSL_ASSERT( xContext.is() );
133                 if (xContext.is())
134                 {
135                     Reference < XIdlReflection > x;
136                     xContext->getValueByName(
137                         OUString( RTL_CONSTASCII_USTRINGPARAM("/singletons/com.sun.star.reflection.theCoreReflection") ) ) >>= x;
138                     OSL_ENSURE( x.is(), "### CoreReflection singleton not accessible!?" );
139 
140                     if (x.is())
141                     {
142                         ::osl::MutexGuard guard( ::osl::Mutex::getGlobalMutex() );
143                         if (! m_xCorefl.is())
144                         {
145                             m_xCorefl = x;
146                         }
147                     }
148                 }
149             }
150         }
151         if (! m_xCorefl.is())
152         {
153             throw DeploymentException(
154                 OUString( RTL_CONSTASCII_USTRINGPARAM("/singletons/com.sun.star.reflection.theCoreReflection singleton not accessible") ),
155                 Reference< XInterface >() );
156         }
157     }
158     return m_xCorefl;
159 }
160 
OStdIdlClass(const Reference<XMultiServiceFactory> & rSMgr,const OUString & sImplementationName,const Reference<XIdlClass> & rSuperClass,const Sequence<OUString> & seq)161 OStdIdlClass::OStdIdlClass(
162 					const Reference < XMultiServiceFactory > &rSMgr ,
163 					const OUString & sImplementationName ,
164 					const Reference < XIdlClass > & rSuperClass,
165 					const Sequence < OUString > &seq
166 						  ) SAL_THROW( () ) :
167 				m_sImplementationName( sImplementationName ) ,
168 				m_seqSupportedInterface( seq ),
169 				m_rSMgr( rSMgr )
170 {
171 	if( rSuperClass.is() )
172 		m_seqSuperClasses = Sequence< Reference < XIdlClass > >( &rSuperClass, 1 );
173 
174 }
175 
queryInterface(const Type & rType)176 Any SAL_CALL OStdIdlClass::queryInterface( const Type & rType )
177 	 throw(::com::sun::star::uno::RuntimeException)
178 {
179 	Any aRet( ::cppu::queryInterface(
180 		rType, static_cast< XIdlClass * >( this ), static_cast< XIdlClassProvider * >( this ) ) );
181 
182 	return (aRet.hasValue() ? aRet : OWeakObject::queryInterface( rType ));
183 }
184 
185 
getInterfaces()186 Sequence< Reference< XIdlClass > > SAL_CALL OStdIdlClass::getInterfaces(  ) throw(RuntimeException)
187 {
188 	int nMax = m_seqSupportedInterface.getLength();
189 
190     Reference< XIdlReflection > const & rCoreRefl = get_corefl();
191     if( rCoreRefl.is() )
192     {
193         Sequence< Reference< XIdlClass > > seqClasses( nMax );
194 
195         for( int n = 0 ; n < nMax ; n++ )
196         {
197             seqClasses.getArray()[n] = rCoreRefl->forName( m_seqSupportedInterface.getArray()[n] );
198         }
199 
200         return seqClasses;
201 	}
202 	return Sequence< Reference< XIdlClass > > () ;
203 }
204 
205 
206 // XIdlClassProvider
getIdlClasses(void)207 Sequence< Reference < XIdlClass > > SAL_CALL OStdIdlClass::getIdlClasses(void)
208 	throw (RuntimeException)
209 {
210 	// weak reference to cache the standard class
211     static WeakReference< XIdlClass >	weakRef;
212 
213 	// try to make weakref hard
214 	Reference < XIdlClass > r = weakRef;
215 
216 	if( ! r.is() ) {
217 		// xidlclass has not been initialized before or has been destroyed already.
218 		r = ::cppu::createStandardClass(
219 										m_rSMgr ,
220 										OUString( RTL_CONSTASCII_USTRINGPARAM("com.sun.star.comp.cppuhelper.OStdIdlClass") ) ,
221 										Reference < XIdlClass > () ,
222   										SAL_STATIC_CAST( XIdlClassProvider * , this ) ,
223   										SAL_STATIC_CAST( XIdlClass * , this )
224 					 					);
225 
226 		// store reference for later use
227 		weakRef = r;
228 	}
229 
230 	return Sequence < Reference < XIdlClass > > ( &r , 1 );
231 }
232 
233 
234 
235 
236 // external constructor
createStandardClassWithSequence(const Reference<XMultiServiceFactory> & rSMgr,const OUString & sImplementationName,const Reference<XIdlClass> & rSuperClass,const Sequence<OUString> & seqInterfaceNames)237 XIdlClass *  SAL_CALL createStandardClassWithSequence(
238 					const Reference < XMultiServiceFactory > &rSMgr ,
239 					const OUString & sImplementationName ,
240 					const Reference < XIdlClass > & rSuperClass,
241 					const Sequence < OUString > &seqInterfaceNames )
242 	SAL_THROW( () )
243 {
244 	return SAL_STATIC_CAST(
245 						XIdlClass * ,
246 						new OStdIdlClass(
247 											rSMgr ,
248 											sImplementationName,
249 											rSuperClass,
250 											seqInterfaceNames
251 										  )
252 					   );
253 }
254 
255 } //end namespace cppu
256