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/* $Id$ */

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/** @file macos.h Functions related to MacOS support. */

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#ifndef MACOS_H

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#define MACOS_H

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/*

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 * Functions to show the popup window

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 * use ShowMacDialog when you want to control title, message and text on the button

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 * ShowMacAssertDialog is used by assert

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 * ShowMacErrorDialog should be used when an unrecoverable error shows up. It only contains the title, which will should tell what went wrong

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 * the function then adds text that tells the user to update and then report the bug if it's present in the newest version

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 * It also quits in a nice way since we call it when we know something happened that will crash OpenTTD (like a needed pointer turns out to be NULL or similar)

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 */

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void ShowMacDialog ( const char *title, const char *message, const char *buttonLabel );

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void ShowMacAssertDialog ( const char *function, const char *file, const int line, const char *expression );

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void ShowMacErrorDialog(const char *error);

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// Since MacOS X users will never see an assert unless they started the game from a terminal

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// we're using a custom assert(e) macro.

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#undef assert

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#ifdef NDEBUG

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#define assert(e)       ((void)0)

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#else

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#define assert(e) \

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		(__builtin_expect(!(e), 0) ? ShowMacAssertDialog ( __func__, __FILE__, __LINE__, #e ): (void)0 )

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#endif

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/**

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 * Get the major version of Mac OS we are running under. Useful for things like the cocoa driver.

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 * @return major version of the os. This would be 10 in the case of 10.4.11.

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 */

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long GetMacOSVersionMajor();

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/**

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 * Get the minor version of Mac OS we are running under. Useful for things like the cocoa driver.

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 * @return minor version of the os. This would be 4 in the case of 10.4.11.

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 */

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long GetMacOSVersionMinor();

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/**

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 * Get the bugfix version of Mac OS we are running under. Useful for things like the cocoa driver.

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 * @return bugfix version of the os. This would be 11 in the case of 10.4.11.

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 */

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long GetMacOSVersionBugfix();

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/**

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 * Check if we are at least running on the specified version of Mac OS.

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 * @param major major version of the os. This would be 10 in the case of 10.4.11.

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 * @param minor minor version of the os. This would be 4 in the case of 10.4.11.

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 * @param bugfix bugfix version of the os. This would be 11 in the case of 10.4.11.

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 * @return true if the running os is at least what we asked, false otherwise.

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 */

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static inline bool MacOSVersionIsAtLeast(long major, long minor, long bugfix)

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{

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	long maj = GetMacOSVersionMajor();

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	long min = GetMacOSVersionMinor();

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	long bf = GetMacOSVersionBugfix();

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	if (maj < major) return false;

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	if (maj == major && min < minor) return false;

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	if (maj == major && min == minor && bf < bugfix) return false;

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	return true;

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}

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#endif /* MACOS_H */