| 1 | // ============================================================ // |
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| 2 | // // |
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| 3 | // File : rootAsWin.h // |
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| 4 | // Purpose : // |
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| 5 | // // |
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| 6 | // Coded by Ralf Westram (coder@reallysoft.de) in July 2013 // |
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| 7 | // Institute of Microbiology (Technical University Munich) // |
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| 8 | // http://www.arb-home.de/ // |
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| 9 | // // |
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| 10 | // ============================================================ // |
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| 11 | |
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| 12 | #ifndef ROOTASWIN_H |
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| 13 | #define ROOTASWIN_H |
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| 14 | |
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| 15 | #ifndef CB_H |
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| 16 | #include <cb.h> |
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| 17 | #endif |
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| 18 | |
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| 19 | class RootAsWindowCallback { |
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| 20 | // Allows to use any RootCallback where a WindowCallback is expected. |
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| 21 | |
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| 22 | RootCallback rcb; |
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| 23 | void call(AW_window *aww) const { rcb(aww->get_root()); } |
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| 24 | RootAsWindowCallback(const RootCallback& rcb_) : rcb(rcb_) {} |
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| 25 | |
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| 26 | static void window_cb(AW_window *aww, const RootAsWindowCallback *rawcb) { rawcb->call(aww); } |
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| 27 | static void delete_raw_cb(RootAsWindowCallback *raw_cb) { delete raw_cb; } |
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| 28 | |
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| 29 | template<typename T> |
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| 30 | static void call_root_as_win(AW_window *aww, void (*root_cb)(AW_root*, T), T t) { root_cb(aww->get_root(), t); } |
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| 31 | |
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| 32 | static void call_root_as_win(AW_window *aww, void (*root_cb)(AW_root*)) { root_cb(aww->get_root()); } |
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| 33 | |
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| 34 | public: |
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| 35 | |
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| 36 | static WindowCallback reuse(const RootCallback& rcb) { |
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| 37 | // It's not recommended to use this widely, mainly this is a helper for refactoring. |
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| 38 | // Normally you should better adapt your callback-type. |
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| 39 | // |
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| 40 | // Use it in cases where a user-provided callback has to be used |
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| 41 | // both as RootCallback and as WindowCallback. |
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| 42 | |
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| 43 | return makeWindowCallback(window_cb, delete_raw_cb, new RootAsWindowCallback(rcb)); |
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| 44 | } |
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| 45 | |
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| 46 | template<typename T> |
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| 47 | static WindowCallback simple(void (*root_cb)(AW_root*, T), T t) { |
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| 48 | // usable for simple root callbacks with only one argument |
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| 49 | // (automatically creates one general wrapper function for each type T) |
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| 50 | return makeWindowCallback(call_root_as_win, root_cb, t); |
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| 51 | } |
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| 52 | |
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| 53 | static WindowCallback simple(void (*root_cb)(AW_root*)) { |
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| 54 | // usable for simple root callbacks with no argument |
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| 55 | return makeWindowCallback(call_root_as_win, root_cb); |
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| 56 | } |
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| 57 | }; |
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| 58 | |
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| 59 | #else |
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| 60 | #error rootAsWin.h included twice |
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| 61 | #endif // ROOTASWIN_H |
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