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21
22
23 #ifndef _UNO_CURRENT_CONTEXT_HXX_
24 #define _UNO_CURRENT_CONTEXT_HXX_
25
26 #include <uno/current_context.h>
27
28 #include <com/sun/star/uno/XCurrentContext.hpp>
29
30
31 namespace com
32 {
33 namespace sun
34 {
35 namespace star
36 {
37 namespace uno
38 {
39
40 /** Getting the current context.
41 @attention
42 Don't spread the returned interface around to other threads. Every thread has its own
43 current context.
44
45 @return current context or null ref, if none is set
46 */
getCurrentContext()47 inline Reference< XCurrentContext > SAL_CALL getCurrentContext()
48 SAL_THROW( () )
49 {
50 Reference< XCurrentContext > xRet;
51 ::rtl::OUString aEnvTypeName( RTL_CONSTASCII_USTRINGPARAM(CPPU_CURRENT_LANGUAGE_BINDING_NAME) );
52 ::uno_getCurrentContext( (void **)&xRet, aEnvTypeName.pData, 0 );
53 return xRet;
54 }
55 /** Setting the current context.
56
57 @param xContext current context to be set
58 @return true, if context has been successfully set
59 */
setCurrentContext(Reference<XCurrentContext> const & xContext)60 inline bool SAL_CALL setCurrentContext(
61 Reference< XCurrentContext > const & xContext )
62 SAL_THROW( () )
63 {
64 ::rtl::OUString aEnvTypeName( RTL_CONSTASCII_USTRINGPARAM(CPPU_CURRENT_LANGUAGE_BINDING_NAME) );
65 return (::uno_setCurrentContext( xContext.get(), aEnvTypeName.pData, 0 ) != sal_False);
66 }
67
68 /** Objects of this class are used for applying a current context until they are destructed, i.e.
69 the ctor of this class saves the previous and sets the given context while the dtor restores
70 the previous one upon destruction.
71 */
72 class ContextLayer
73 {
74 /** this C++ environment type name.
75 @internal
76 */
77 ::rtl::OUString m_aEnvTypeName;
78 /** previous context
79 @internal
80 */
81 Reference< XCurrentContext > m_xPreviousContext;
82
83 public:
84 /** Constructor: Saves the previous context and sets the new (given) one.
85
86 @param xNewContext new context to be set
87 */
88 inline ContextLayer(
89 Reference< XCurrentContext > const & xNewContext = Reference< XCurrentContext >() )
90 SAL_THROW( () );
91 /** Destructor: restores the previous context.
92 */
93 inline ~ContextLayer() SAL_THROW( () );
94
95 /** Gets the previously set context.
96
97 @return the previously set context
98 */
getPreviousContext() const99 inline Reference< XCurrentContext > SAL_CALL getPreviousContext() const
100 SAL_THROW( () )
101 { return m_xPreviousContext; }
102 };
103 //__________________________________________________________________________________________________
ContextLayer(Reference<XCurrentContext> const & xNewContext)104 inline ContextLayer::ContextLayer( Reference< XCurrentContext > const & xNewContext )
105 SAL_THROW( () )
106 : m_aEnvTypeName( RTL_CONSTASCII_USTRINGPARAM(CPPU_CURRENT_LANGUAGE_BINDING_NAME) )
107 {
108 ::uno_getCurrentContext( (void **)&m_xPreviousContext, m_aEnvTypeName.pData, 0 );
109 ::uno_setCurrentContext( xNewContext.get(), m_aEnvTypeName.pData, 0 );
110 }
111 //__________________________________________________________________________________________________
~ContextLayer()112 inline ContextLayer::~ContextLayer()
113 SAL_THROW( () )
114 {
115 ::uno_setCurrentContext( m_xPreviousContext.get(), m_aEnvTypeName.pData, 0 );
116 }
117
118 }
119 }
120 }
121 }
122
123 #endif
124