projects / wxWidgets.git / blame
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1 | /**************************************************************************** |
| 2 | * | |
| 3 | * wxWindows HTML Applet Package | |
| 4 | * | |
| 5 | * Copyright (C) 1991-2001 SciTech Software, Inc. | |
| 6 | * All rights reserved. | |
| 7 | * | |
| 8 | * ======================================================================== | |
| 9 | * | |
| 10 | * The contents of this file are subject to the wxWindows License | |
| 11 | * Version 3.0 (the "License"); you may not use this file except in | |
| 12 | * compliance with the License. You may obtain a copy of the License at | |
| 13 | * http://www.wxwindows.org/licence3.txt | |
| 14 | * | |
| 15 | * Software distributed under the License is distributed on an | |
| 16 | * "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
| 17 | * implied. See the License for the specific language governing | |
| 18 | * rights and limitations under the License. | |
| 19 | * | |
| 20 | * ======================================================================== | |
| 21 | * | |
| 22 | * Language: ANSI C++ | |
| 23 | * Environment: Any | |
| 24 | * | |
| 25 | * Description: Header file for wxIfElseVariable Class, Dynamically constructed | |
| 26 | * objects representing variables in SSI #if, #else and #endif directives | |
| 27 | * | |
| 28 | ****************************************************************************/ | |
| 29 | ||
| 30 | #ifndef __WX_IFELSEVAR_H | |
| 31 | #define __WX_IFELSEVAR_H | |
| 32 | ||
| 33 | /*--------------------------- Class Definitions ---------------------------*/ | |
| 34 | ||
| 35 | /**************************************************************************** | |
| 36 | REMARKS: | |
| 37 | This class is used to create variables for the HTML preprocessor #if, #else, | |
| 38 | and #endif directives. | |
| 39 | ||
| 40 | SEE ALSO: | |
| 41 | wxIfElsePrep | |
| 42 | ****************************************************************************/ | |
| 43 | class wxIfElseVariable : public wxObject { | |
| 44 | private: | |
| 45 | DECLARE_ABSTRACT_CLASS(wxIfElseVariable); | |
| 46 | ||
| 47 | public: | |
| 48 | wxIfElseVariable() : wxObject() {} | |
| 49 | ~wxIfElseVariable() {} | |
| 50 | ||
| 51 | /**************************************************************************** | |
| 52 | RETURNS: | |
| 53 | The boolean value of the variable | |
| 54 | ||
| 55 | REMARKS: | |
| 56 | To create new variables for the #if, #else and #endif HTML preprocessing | |
| 57 | blocks you need to derive classes from wxIfElseVariable and override the | |
| 58 | pure virtual GetValue function. However this should not be done directly | |
| 59 | but by using the BEGIN_IFELSE_VARIABLE and END_IFELSE_VARIABLE macros | |
| 60 | ||
| 61 | SEE ALSO: | |
| 62 | wxIfElsePrep, BEGIN_IFELSE_VARIABLE, END_IFELSE_VARIABLE | |
| 63 | ****************************************************************************/ | |
| 64 | virtual bool GetValue() const = 0; | |
| 65 | ||
| 66 | ||
| 67 | public: | |
| 68 | // static function to retrieve any variable avaliable | |
| 69 | static bool GetValue(const wxString &cls); | |
| 70 | }; | |
| 71 | ||
| 72 | /*--------------------------------- MACROS --------------------------------*/ | |
| 73 | ||
| 74 | #define BEGIN_IFELSE_VARIABLE(name) \ | |
| 75 | class wxIfElseVariable##name : public wxIfElseVariable { \ | |
| 76 | private: \ | |
| 77 | DECLARE_DYNAMIC_CLASS(wxIfElseVariable##name##); \ | |
| 78 | public: \ | |
| 79 | wxIfElseVariable##name##() : wxIfElseVariable() {} \ | |
| 80 | virtual bool GetValue() const; \ | |
| 81 | }; \ | |
| 82 | IMPLEMENT_DYNAMIC_CLASS(wxIfElseVariable##name##, wxIfElseVariable); \ | |
| 83 | bool wxIfElseVariable##name :: GetValue() const { | |
| 84 | ||
| 85 | #define END_IFELSE_VARIABLE(name, returnval) \ | |
| 86 | return returnval; \ | |
| 87 | } | |
| 88 | ||
| 89 | #define IFELSE_VARIABLE(name, state) \ | |
| 90 | BEGIN_IFELSE_VARIABLE(##name##); \ | |
| 91 | END_IFELSE_VARIABLE(##name##, bool (state)) | |
| 92 | ||
| 93 | ||
| 94 | #endif // __WX_IFELSEVAR_H | |
| 95 |