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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wx/msgout.h | |
3 | // Purpose: wxMessageOutput class. Shows a message to the user | |
4 | // Author: Mattia Barbon | |
5 | // Modified by: | |
6 | // Created: 17.07.02 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Mattia Barbon | |
9 | // Licence: wxWindows licence | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifndef _WX_MSGOUT_H_ | |
13 | #define _WX_MSGOUT_H_ | |
14 | ||
15 | // ---------------------------------------------------------------------------- | |
16 | // headers | |
17 | // ---------------------------------------------------------------------------- | |
18 | ||
19 | #include "wx/defs.h" | |
20 | #include "wx/wxchar.h" | |
21 | #include "wx/strvararg.h" | |
22 | ||
23 | // ---------------------------------------------------------------------------- | |
24 | // wxMessageOutput is a class abstracting formatted output target, i.e. | |
25 | // something you can printf() to | |
26 | // ---------------------------------------------------------------------------- | |
27 | ||
28 | // NB: VC6 has a bug that causes linker errors if you have template methods | |
29 | // in a class using __declspec(dllimport). The solution is to split such | |
30 | // class into two classes, one that contains the template methods and does | |
31 | // *not* use WXDLLIMPEXP_BASE and another class that contains the rest | |
32 | // (with DLL linkage). | |
33 | class wxMessageOutputBase | |
34 | { | |
35 | public: | |
36 | virtual ~wxMessageOutputBase() { } | |
37 | ||
38 | // show a message to the user | |
39 | // void Printf(const wxChar* format, ...) ATTRIBUTE_PRINTF_2 = 0; | |
40 | WX_DEFINE_VARARG_FUNC_VOID(Printf, DoPrintf) | |
41 | ||
42 | protected: | |
43 | virtual void DoPrintf(const wxChar* format, ...) ATTRIBUTE_PRINTF_2 = 0; | |
44 | }; | |
45 | ||
46 | #ifdef __VISUALC__ | |
47 | // "non dll-interface class 'wxStringPrintfMixin' used as base interface | |
48 | // for dll-interface class 'wxString'" -- this is OK in our case | |
49 | #pragma warning (disable:4275) | |
50 | #endif | |
51 | ||
52 | class WXDLLIMPEXP_BASE wxMessageOutput : public wxMessageOutputBase | |
53 | { | |
54 | public: | |
55 | virtual ~wxMessageOutput() { } | |
56 | ||
57 | // gets the current wxMessageOutput object (may be NULL during | |
58 | // initialization or shutdown) | |
59 | static wxMessageOutput* Get(); | |
60 | ||
61 | // sets the global wxMessageOutput instance; returns the previous one | |
62 | static wxMessageOutput* Set(wxMessageOutput* msgout); | |
63 | ||
64 | private: | |
65 | static wxMessageOutput* ms_msgOut; | |
66 | }; | |
67 | ||
68 | #ifdef __VISUALC__ | |
69 | #pragma warning (default:4275) | |
70 | #endif | |
71 | ||
72 | // ---------------------------------------------------------------------------- | |
73 | // implementation showing the message to the user in "best" possible way: uses | |
74 | // native message box if available (currently only under Windows) and stderr | |
75 | // otherwise; unlike wxMessageOutputMessageBox this class is always safe to use | |
76 | // ---------------------------------------------------------------------------- | |
77 | ||
78 | class WXDLLIMPEXP_BASE wxMessageOutputBest : public wxMessageOutput | |
79 | { | |
80 | public: | |
81 | wxMessageOutputBest() { } | |
82 | ||
83 | protected: | |
84 | virtual void DoPrintf(const wxChar* format, ...) ATTRIBUTE_PRINTF_2; | |
85 | }; | |
86 | ||
87 | // ---------------------------------------------------------------------------- | |
88 | // implementation which sends output to stderr | |
89 | // ---------------------------------------------------------------------------- | |
90 | ||
91 | class WXDLLIMPEXP_BASE wxMessageOutputStderr : public wxMessageOutput | |
92 | { | |
93 | public: | |
94 | wxMessageOutputStderr() { } | |
95 | ||
96 | protected: | |
97 | virtual void DoPrintf(const wxChar* format, ...) ATTRIBUTE_PRINTF_2; | |
98 | }; | |
99 | ||
100 | // ---------------------------------------------------------------------------- | |
101 | // implementation which shows output in a message box | |
102 | // ---------------------------------------------------------------------------- | |
103 | ||
104 | #if wxUSE_GUI | |
105 | ||
106 | class WXDLLIMPEXP_CORE wxMessageOutputMessageBox : public wxMessageOutput | |
107 | { | |
108 | public: | |
109 | wxMessageOutputMessageBox() { } | |
110 | ||
111 | protected: | |
112 | virtual void DoPrintf(const wxChar* format, ...) ATTRIBUTE_PRINTF_2; | |
113 | }; | |
114 | ||
115 | #endif // wxUSE_GUI | |
116 | ||
117 | // ---------------------------------------------------------------------------- | |
118 | // implementation using the native way of outputting debug messages | |
119 | // ---------------------------------------------------------------------------- | |
120 | ||
121 | class WXDLLIMPEXP_BASE wxMessageOutputDebug : public wxMessageOutput | |
122 | { | |
123 | public: | |
124 | wxMessageOutputDebug() { } | |
125 | ||
126 | protected: | |
127 | virtual void DoPrintf(const wxChar* format, ...) ATTRIBUTE_PRINTF_2; | |
128 | }; | |
129 | ||
130 | // ---------------------------------------------------------------------------- | |
131 | // implementation using wxLog (mainly for backwards compatibility) | |
132 | // ---------------------------------------------------------------------------- | |
133 | ||
134 | class WXDLLIMPEXP_BASE wxMessageOutputLog : public wxMessageOutput | |
135 | { | |
136 | public: | |
137 | wxMessageOutputLog() { } | |
138 | ||
139 | protected: | |
140 | virtual void DoPrintf(const wxChar* format, ...) ATTRIBUTE_PRINTF_2; | |
141 | }; | |
142 | ||
143 | #endif | |
144 | // _WX_MSGOUT_H_ |