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 #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 */ 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 */ 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 */ 99 inline Reference< XCurrentContext > SAL_CALL getPreviousContext() const 100 SAL_THROW( () ) 101 { return m_xPreviousContext; } 102 }; 103 //__________________________________________________________________________________________________ 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 //__________________________________________________________________________________________________ 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