[80] | 1 | // |
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| 2 | // FunctionPriorityDelegate.h |
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| 3 | // |
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| 4 | // $Id: //poco/1.3/Foundation/include/Poco/FunctionPriorityDelegate.h#1 $ |
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| 5 | // |
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| 6 | // Library: Foundation |
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| 7 | // Package: Events |
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| 8 | // Module: FunctionPriorityDelegate |
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| 9 | // |
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| 10 | // Implementation of the FunctionPriorityDelegate template. |
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| 11 | // |
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| 12 | // Copyright (c) 2006, Applied Informatics Software Engineering GmbH. |
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| 13 | // and Contributors. |
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| 14 | // |
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| 15 | // Permission is hereby granted, free of charge, to any person or organization |
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| 16 | // obtaining a copy of the software and accompanying documentation covered by |
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| 17 | // this license (the "Software") to use, reproduce, display, distribute, |
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| 18 | // execute, and transmit the Software, and to prepare derivative works of the |
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| 19 | // Software, and to permit third-parties to whom the Software is furnished to |
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| 20 | // do so, all subject to the following: |
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| 21 | // |
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| 22 | // The copyright notices in the Software and this entire statement, including |
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| 23 | // the above license grant, this restriction and the following disclaimer, |
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| 24 | // must be included in all copies of the Software, in whole or in part, and |
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| 25 | // all derivative works of the Software, unless such copies or derivative |
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| 26 | // works are solely in the form of machine-executable object code generated by |
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| 27 | // a source language processor. |
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| 28 | // |
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| 29 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 30 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 31 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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| 32 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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| 33 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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| 34 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 35 | // DEALINGS IN THE SOFTWARE. |
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| 36 | // |
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| 37 | |
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| 38 | |
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| 39 | #ifndef Foundation_FunctionPriorityDelegate_INCLUDED |
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| 40 | #define Foundation_FunctionPriorityDelegate_INCLUDED |
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| 41 | |
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| 42 | |
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| 43 | #include "Poco/Foundation.h" |
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| 44 | #include "Poco/AbstractPriorityDelegate.h" |
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| 45 | |
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| 46 | |
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| 47 | namespace Poco { |
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| 48 | |
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| 49 | |
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| 50 | template <class TArgs, bool useSender = true, bool senderIsConst = true> |
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| 51 | class FunctionPriorityDelegate: public AbstractPriorityDelegate<TArgs> |
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| 52 | /// Wraps a C style function (or a C++ static fucntion) to be used as |
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| 53 | /// a priority delegate |
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| 54 | { |
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| 55 | public: |
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| 56 | typedef void (*NotifyMethod)(const void*, TArgs&); |
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| 57 | |
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| 58 | FunctionPriorityDelegate(NotifyMethod method, int prio): |
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| 59 | AbstractPriorityDelegate<TArgs>(*reinterpret_cast<void**>(&method), prio), |
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| 60 | _receiverMethod(method) |
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| 61 | { |
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| 62 | } |
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| 63 | |
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| 64 | FunctionPriorityDelegate(const FunctionPriorityDelegate& delegate): |
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| 65 | AbstractPriorityDelegate<TArgs>(delegate._pTarget, delegate._priority), |
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| 66 | _receiverMethod(delegate._receiverMethod) |
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| 67 | { |
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| 68 | } |
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| 69 | |
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| 70 | FunctionPriorityDelegate& operator = (const FunctionPriorityDelegate& delegate) |
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| 71 | { |
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| 72 | if (&delegate != this) |
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| 73 | { |
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| 74 | this->_pTarget = delegate._pTarget; |
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| 75 | this->_receiverMethod = delegate._receiverMethod; |
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| 76 | this->_priority = delegate._priority; |
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| 77 | } |
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| 78 | return *this; |
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| 79 | } |
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| 80 | |
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| 81 | ~FunctionPriorityDelegate() |
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| 82 | { |
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| 83 | } |
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| 84 | |
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| 85 | bool notify(const void* sender, TArgs& arguments) |
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| 86 | { |
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| 87 | (*_receiverMethod)(sender, arguments); |
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| 88 | return true; // per default the delegate never expires |
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| 89 | } |
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| 90 | |
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| 91 | AbstractPriorityDelegate<TArgs>* clone() const |
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| 92 | { |
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| 93 | return new FunctionPriorityDelegate(*this); |
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| 94 | } |
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| 95 | |
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| 96 | protected: |
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| 97 | NotifyMethod _receiverMethod; |
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| 98 | |
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| 99 | private: |
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| 100 | FunctionPriorityDelegate(); |
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| 101 | }; |
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| 102 | |
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| 103 | |
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| 104 | template <class TArgs> |
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| 105 | class FunctionPriorityDelegate<TArgs, true, false>: public AbstractPriorityDelegate<TArgs> |
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| 106 | { |
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| 107 | public: |
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| 108 | typedef void (*NotifyMethod)(void*, TArgs&); |
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| 109 | |
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| 110 | FunctionPriorityDelegate(NotifyMethod method, int prio): |
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| 111 | AbstractPriorityDelegate<TArgs>(*reinterpret_cast<void**>(&method), prio), |
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| 112 | _receiverMethod(method) |
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| 113 | { |
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| 114 | } |
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| 115 | |
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| 116 | FunctionPriorityDelegate(const FunctionPriorityDelegate& delegate): |
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| 117 | AbstractPriorityDelegate<TArgs>(delegate._pTarget, delegate._priority), |
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| 118 | _receiverMethod(delegate._receiverMethod) |
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| 119 | { |
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| 120 | } |
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| 121 | |
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| 122 | FunctionPriorityDelegate& operator = (const FunctionPriorityDelegate& delegate) |
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| 123 | { |
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| 124 | if (&delegate != this) |
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| 125 | { |
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| 126 | this->_pTarget = delegate._pTarget; |
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| 127 | this->_receiverMethod = delegate._receiverMethod; |
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| 128 | this->_priority = delegate._priority; |
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| 129 | } |
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| 130 | return *this; |
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| 131 | } |
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| 132 | |
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| 133 | ~FunctionPriorityDelegate() |
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| 134 | { |
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| 135 | } |
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| 136 | |
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| 137 | bool notify(const void* sender, TArgs& arguments) |
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| 138 | { |
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| 139 | (*_receiverMethod)(const_cast<void*>(sender), arguments); |
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| 140 | return true; // per default the delegate never expires |
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| 141 | } |
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| 142 | |
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| 143 | AbstractPriorityDelegate<TArgs>* clone() const |
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| 144 | { |
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| 145 | return new FunctionPriorityDelegate(*this); |
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| 146 | } |
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| 147 | |
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| 148 | protected: |
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| 149 | NotifyMethod _receiverMethod; |
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| 150 | |
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| 151 | private: |
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| 152 | FunctionPriorityDelegate(); |
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| 153 | }; |
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| 154 | |
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| 155 | |
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| 156 | |
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| 157 | template <class TArgs> |
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| 158 | class FunctionPriorityDelegate<TArgs, false>: public AbstractPriorityDelegate<TArgs> |
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| 159 | { |
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| 160 | public: |
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| 161 | typedef void (*NotifyMethod)(TArgs&); |
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| 162 | |
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| 163 | FunctionPriorityDelegate(NotifyMethod method, int prio): |
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| 164 | AbstractPriorityDelegate<TArgs>(*reinterpret_cast<void**>(&method), prio), |
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| 165 | _receiverMethod(method) |
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| 166 | { |
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| 167 | } |
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| 168 | |
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| 169 | FunctionPriorityDelegate(const FunctionPriorityDelegate& delegate): |
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| 170 | AbstractPriorityDelegate<TArgs>(delegate._pTarget, delegate._priority), |
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| 171 | _receiverMethod(delegate._receiverMethod) |
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| 172 | { |
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| 173 | } |
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| 174 | |
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| 175 | FunctionPriorityDelegate& operator = (const FunctionPriorityDelegate& delegate) |
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| 176 | { |
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| 177 | if (&delegate != this) |
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| 178 | { |
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| 179 | this->_pTarget = delegate._pTarget; |
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| 180 | this->_receiverMethod = delegate._receiverMethod; |
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| 181 | this->_priority = delegate._priority; |
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| 182 | } |
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| 183 | return *this; |
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| 184 | } |
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| 185 | |
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| 186 | ~FunctionPriorityDelegate() |
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| 187 | { |
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| 188 | } |
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| 189 | |
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| 190 | bool notify(const void* sender, TArgs& arguments) |
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| 191 | { |
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| 192 | (*_receiverMethod)(arguments); |
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| 193 | return true; // per default the delegate never expires |
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| 194 | } |
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| 195 | |
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| 196 | AbstractPriorityDelegate<TArgs>* clone() const |
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| 197 | { |
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| 198 | return new FunctionPriorityDelegate(*this); |
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| 199 | } |
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| 200 | |
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| 201 | protected: |
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| 202 | NotifyMethod _receiverMethod; |
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| 203 | |
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| 204 | private: |
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| 205 | FunctionPriorityDelegate(); |
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| 206 | }; |
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| 207 | |
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| 208 | |
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| 209 | } // namespace Poco |
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| 210 | |
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| 211 | |
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| 212 | #endif // Foundation_FunctionPriorityDelegate_INCLUDED |
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