#ifndef __WX_IFELSEVAR_H
#define __WX_IFELSEVAR_H
+#include "wx/object.h"
+#include "wx/hash.h"
+
/*--------------------------- Class Definitions ---------------------------*/
/****************************************************************************
+RETURNS:
+The boolean value of the variable
+
REMARKS:
-This class is used to create variables for the HTML preprocessor #if, #else,
-and #endif directives.
+To create new variables for the #if, #else and #endif HTML preprocessing
+blocks you need to derive classes from wxIfElseVariable and override the
+pure virtual GetValue function. However this should not be done directly
+but by using the BEGIN_IFELSE_VARIABLE and END_IFELSE_VARIABLE macros
SEE ALSO:
-wxIfElsePrep
+wxIfElsePrep, BEGIN_IFELSE_VARIABLE, END_IFELSE_VARIABLE
+****************************************************************************/
+typedef bool (*wxIfElseVariableGetValueFn)();
+
+/****************************************************************************
+REMARKS:
+wxIfElseVariable class Definition
****************************************************************************/
class wxIfElseVariable : public wxObject {
-private:
- DECLARE_ABSTRACT_CLASS(wxIfElseVariable);
+protected:
+ const wxChar *m_varName;
+ wxIfElseVariableGetValueFn m_getValueFn;
+ static wxIfElseVariable *sm_first;
+ wxIfElseVariable *m_next;
+ static wxHashTable *sm_varTable;
+ bool forced;
+ bool forceVal;
+
+ static inline wxIfElseVariable *wxIfElseVariable::FindVariable(const wxChar *varName);
public:
- wxIfElseVariable() : wxObject() {}
- ~wxIfElseVariable() {}
+ // Constructor to create the echo variable and register the class
+ wxIfElseVariable(
+ const char *varName,
+ wxIfElseVariableGetValueFn getValueFn);
+
+ // Member variable access functions
+ const wxChar *GetClassName() const { return m_varName; }
+ wxIfElseVariableGetValueFn GetValueFn() const { return m_getValueFn; }
+ static const wxIfElseVariable* GetFirst() { return sm_first; }
+ const wxIfElseVariable* GetNext() const { return m_next; }
- /****************************************************************************
- RETURNS:
- The boolean value of the variable
+ // Static functions to retrieve any variable avaliable
+ static bool GetValue(const wxChar *varName);
+ static bool Exists(const wxChar *varName);
+ static void Force(const wxChar *varName, bool val);
- REMARKS:
- To create new variables for the #if, #else and #endif HTML preprocessing
- blocks you need to derive classes from wxIfElseVariable and override the
- pure virtual GetValue function. However this should not be done directly
- but by using the BEGIN_IFELSE_VARIABLE and END_IFELSE_VARIABLE macros
+ // Initializes parent pointers and hash table for fast searching.
+ static void Initialize();
- SEE ALSO:
- wxIfElsePrep, BEGIN_IFELSE_VARIABLE, END_IFELSE_VARIABLE
- ****************************************************************************/
- virtual bool GetValue() const = 0;
+ // Cleans up hash table used for fast searching.
+ static void CleanUp();
+ };
+
+/****************************************************************************
+PARAMETERS:
+class - Name of class for echo variable to find
+RETURNS:
+Pointer to the echo variable class
-public:
- // static function to retrieve any variable avaliable
- static bool GetValue(const wxString &cls);
-};
+REMARKS:
+Inline helper function to find the echo variable from it's class name.
+****************************************************************************/
+inline wxIfElseVariable *wxIfElseVariable::FindVariable(
+ const wxChar *varName)
+{
+ if (sm_varTable)
+ return (wxIfElseVariable*)sm_varTable->Get(varName);
+ else {
+ wxIfElseVariable *info = sm_first;
+ while (info) {
+ if (info->m_varName && wxStrcmp(info->m_varName, varName) == 0)
+ return info;
+ info = info->m_next;
+ }
+ return NULL;
+ }
+}
/*--------------------------------- MACROS --------------------------------*/
#define BEGIN_IFELSE_VARIABLE(name) \
- class wxIfElseVariable##name : public wxIfElseVariable { \
- private: \
- DECLARE_DYNAMIC_CLASS(wxIfElseVariable##name##); \
- public: \
- wxIfElseVariable##name##() : wxIfElseVariable() {} \
- virtual bool GetValue() const; \
- }; \
- IMPLEMENT_DYNAMIC_CLASS(wxIfElseVariable##name##, wxIfElseVariable); \
- bool wxIfElseVariable##name :: GetValue() const {
-
-#define END_IFELSE_VARIABLE(name, returnval) \
+bool wxIfElseVariableFn##name(); \
+wxIfElseVariable wxIfElseVariable##name(#name,wxIfElseVariableFn##name); \
+bool wxIfElseVariableFn##name() { \
+
+#define END_IFELSE_VARIABLE(returnval) \
return returnval; \
}
#define IFELSE_VARIABLE(name, state) \
BEGIN_IFELSE_VARIABLE(##name##); \
- END_IFELSE_VARIABLE(##name##, bool (state))
-
+ END_IFELSE_VARIABLE(bool (state))
#endif // __WX_IFELSEVAR_H
projects / wxWidgets.git / blobdiff