ObjFW  Artifact [91ca5aaec7]

Artifact 91ca5aaec7b9455841052e7d4c50a95739e56a9ce79c9971cdc8d3aec9ab0eb8:

• File src/OFApplication.h — part of check-in [48980f2297] at 2015-11-29 11:43:05 on branch trunk — Make properties a requirement and clean up code

  This increases the required GCC version from 4.0 to 4.6 (exception:
  Apple GCC, which already supports this with >= 4.0 starting with OS X
  10.5). Since even GCC 4.6 is really old by now, there is no point in
  still supporting something even older and making the code ugly because
  of that. While some hardware and OS support was dropped from GCC 4.6
  compared to GCC 4.0, there is nothing in there that would be an
  interesting target with the exception of BeOS maybe - but a port to BeOS
  can also be achieved using the Haiku support. The other dropped OSes are
  mostly old versions of OSes while newer ones are still being supported
  (and those newer versions of those OSes still support the same
  hardware). (user: js, size: 6581) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFObject.h"

OF_ASSUME_NONNULL_BEGIN

@class OFString;
#ifndef DOXYGEN
@class OFArray OF_GENERIC(ObjectType);
@class OFDictionary OF_GENERIC(KeyType, ObjectType);
@class OFMutableArray OF_GENERIC(ObjectType);
@class OFMutableDictionary OF_GENERIC(KeyType, ObjectType);
#endif

#define OF_APPLICATION_DELEGATE(cls)					\
	int								\
	main(int argc, char *argv[])					\
	{								\
		return of_application_main(&argc, &argv, [cls class]);	\
	}

/*!
 * @protocol OFApplicationDelegate OFApplication.h ObjFW/OFApplication.h
 *
 * @brief A protocol for delegates of OFApplication.
 */
@protocol OFApplicationDelegate <OFObject>
/*!
 * @brief A method which is called when the application was initialized and is
 *	  running now.
 */
- (void)applicationDidFinishLaunching;

#ifdef OF_HAVE_OPTIONAL_PROTOCOLS
@optional
#endif
/*!
 * @brief A method which is called when the application will terminate.
 */
- (void)applicationWillTerminate;

/*!
 * @brief A method which is called when the application received a SIGINT.
 *
 * @warning You are not allowed to send any messages inside this method, as
 *	    message dispatching is not signal-safe! You are only allowed to do
 *	    signal-safe operations like setting a variable or calling a
 *	    signal-safe function!
 */
- (void)applicationDidReceiveSIGINT;

#ifndef OF_WINDOWS
/*!
 * @brief A method which is called when the application received a SIGHUP.
 *
 * This signal is not available on Windows.
 *
 * @warning You are not allowed to send any messages inside this method, as
 *	    message dispatching is not signal-safe! You are only allowed to do
 *	    signal-safe operations like setting a variable or calling a
 *	    signal-safe function!
 */
- (void)applicationDidReceiveSIGHUP;

/*!
 * @brief A method which is called when the application received a SIGUSR1.
 *
 * This signal is not available on Windows.
 *
 * @warning You are not allowed to send any messages inside this method, as
 *	    message dispatching is not signal-safe! You are only allowed to do
 *	    signal-safe operations like setting a variable or calling a
 *	    signal-safe function!
 */
- (void)applicationDidReceiveSIGUSR1;

/*!
 * @brief A method which is called when the application received a SIGUSR2.
 *
 * This signal is not available on Windows.
 *
 * @warning You are not allowed to send any messages inside this method, as
 *	    message dispatching is not signal-safe! You are only allowed to do
 *	    signal-safe operations like setting a variable or calling a
 *	    signal-safe function!
 */
- (void)applicationDidReceiveSIGUSR2;
#endif
@end

/*!
 * @class OFApplication OFApplication.h ObjFW/OFApplication.h
 *
 * @brief A class which represents the application as an object.
 *
 * In order to create a new OFApplication, you should create a class conforming
 * to the optional @ref OFApplicationDelegate protocol and put
 * `OF_APPLICATION_DELEGATE(NameOfYourClass)` in the .m file of that class. The
 * only required method of the @ref OFApplicationDelegate protocol is
 * @ref OFApplicationDelegate::applicationDidFinishLaunching.
 */
@interface OFApplication: OFObject
{
	OFString *_programName;
	OFArray OF_GENERIC(OFString*) *_arguments;
	OFDictionary OF_GENERIC(OFString*, OFString*) *_environment;
	int *_argc;
	char ***_argv;
@public
	id <OFApplicationDelegate> _delegate;
	void (*_SIGINTHandler)(id, SEL);
#ifndef OF_WINDOWS
	void (*_SIGHUPHandler)(id, SEL);
	void (*_SIGUSR1Handler)(id, SEL);
	void (*_SIGUSR2Handler)(id, SEL);
#endif
}

/*!
 * The name of the program (argv[0]).
 */
@property (readonly, assign) OFString *programName;

/*!
 * The arguments passed to the application.
 */
@property (readonly, assign) OFArray OF_GENERIC(OFString*) *arguments;

/*!
 * The environment of the application.
 */
@property (readonly, assign)
    OFDictionary OF_GENERIC(OFString*, OFString*) *environment;

/*!
 * @brief Returns the only OFApplication instance in the application.
 *
 * @return The only OFApplication instance in the application
 */
+ (OFApplication*)sharedApplication;

/*!
 * @brief Returns the name of the program (argv[0]).
 *
 * @return The name of the program (argv[0])
 */
+ (OFString*)programName;

/*!
 * @brief Returns the arguments passed to the application.
 *
 * @return The arguments passed to the application
 */
+ (OFArray OF_GENERIC(OFString*)*)arguments;

/*!
 * @brief Returns the environment of the application.
 *
 * @return The environment of the application
 */
+ (OFDictionary OF_GENERIC(OFString*, OFString*)*)environment;

/*!
 * @brief Terminates the application with the EXIT_SUCCESS status.
 */
+ (void)terminate OF_NO_RETURN;

/*!
 * @brief Terminates the application with the specified status.
 *
 * @param status The status with which the application will terminate
 */
+ (void)terminateWithStatus: (int)status OF_NO_RETURN;

/*!
 * @brief Gets args and argv.
 *
 * @param argc A pointer where a pointer to argc should be stored
 * @param argv A pointer where a pointer to argv should be stored
 */
- (void)getArgumentCount: (int *_Nonnull *_Nonnull)argc
       andArgumentValues: (char *_Nonnull *_Nonnull *_Nonnull[])argv;

/*!
 * @brief Returns the delegate of the application.
 *
 * @return The delegate of the application
 */
- (nullable id <OFApplicationDelegate>)delegate;

/*!
 * @brief Sets the delegate of the application.
 *
 * @param delegate The delegate for the application
 */
- (void)setDelegate: (nullable id <OFApplicationDelegate>)delegate;

/*!
 * @brief Terminates the application.
 */
- (void)terminate OF_NO_RETURN;

/*!
 * @brief Terminates the application with the specified status.
 *
 * @param status The status with which the application will terminate
 */
- (void)terminateWithStatus: (int)status OF_NO_RETURN;
@end

@interface OFObject (OFApplicationDelegate) <OFApplicationDelegate>
@end

#ifdef __cplusplus
extern "C" {
#endif
extern int of_application_main(int *_Nonnull, char *_Nonnull *_Nonnull[],
    Class);
#ifdef __cplusplus
}
#endif

OF_ASSUME_NONNULL_END