signals.h File Reference

Signal API

purple. More...

#include <glib.h>
#include "value.h"

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Signal API

#define PURPLE_SIGNAL_PRIORITY_DEFAULT   0
 Signal Connect Priorities.
#define PURPLE_SIGNAL_PRIORITY_HIGHEST   9999
#define PURPLE_SIGNAL_PRIORITY_LOWEST   -9999
gulong purple_signal_register (void *instance, const char *signal, PurpleSignalMarshalFunc marshal, PurpleValue *ret_value, int num_values,...)
 Registers a signal in an instance.
void purple_signal_unregister (void *instance, const char *signal)
 Unregisters a signal in an instance.
void purple_signals_unregister_by_instance (void *instance)
 Unregisters all signals in an instance.
void purple_signal_get_values (void *instance, const char *signal, PurpleValue **ret_value, int *num_values, PurpleValue ***values)
 Returns a list of value types used for a signal.
gulong purple_signal_connect_priority (void *instance, const char *signal, void *handle, PurpleCallback func, void *data, int priority)
 Connects a signal handler to a signal for a particular object.
gulong purple_signal_connect (void *instance, const char *signal, void *handle, PurpleCallback func, void *data)
 Connects a signal handler to a signal for a particular object.
gulong purple_signal_connect_priority_vargs (void *instance, const char *signal, void *handle, PurpleCallback func, void *data, int priority)
 Connects a signal handler to a signal for a particular object.
gulong purple_signal_connect_vargs (void *instance, const char *signal, void *handle, PurpleCallback func, void *data)
 Connects a signal handler to a signal for a particular object.
void purple_signal_disconnect (void *instance, const char *signal, void *handle, PurpleCallback func)
 Disconnects a signal handler from a signal on an object.
void purple_signals_disconnect_by_handle (void *handle)
 Removes all callbacks associated with a receiver handle.
void purple_signal_emit (void *instance, const char *signal,...)
 Emits a signal.
void purple_signal_emit_vargs (void *instance, const char *signal, va_list args)
 Emits a signal, using a va_list of arguments.
void * purple_signal_emit_return_1 (void *instance, const char *signal,...)
 Emits a signal and returns the first non-NULL return value.
void * purple_signal_emit_vargs_return_1 (void *instance, const char *signal, va_list args)
 Emits a signal and returns the first non-NULL return value.
void purple_signals_init (void)
 Initializes the signals subsystem.
void purple_signals_uninit (void)
 Uninitializes the signals subsystem.

Marshal Functions

void purple_marshal_VOID (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__INT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__INT_INT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_INT_INT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER_UINT_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER_POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER_POINTER_POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER_POINTER_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER_POINTER_POINTER_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_VOID__POINTER_POINTER_POINTER_UINT_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_INT__INT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_INT__INT_INT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_INT__POINTER_POINTER_POINTER_POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__POINTER_POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__POINTER_POINTER_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__POINTER_POINTER_POINTER_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__POINTER_POINTER_POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__POINTER_POINTER_POINTER_POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__POINTER_POINTER_POINTER_POINTER_UINT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_BOOLEAN__INT_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_POINTER__POINTER_INT (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_POINTER__POINTER_INT64 (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_POINTER__POINTER_INT_BOOLEAN (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_POINTER__POINTER_INT64_BOOLEAN (PurpleCallback cb, va_list args, void *data, void **return_val)
void purple_marshal_POINTER__POINTER_POINTER (PurpleCallback cb, va_list args, void *data, void **return_val)

Defines

#define PURPLE_CALLBACK(func)   ((PurpleCallback)func)

Typedefs

typedef void(* PurpleCallback )(void)
typedef void(* PurpleSignalMarshalFunc )(PurpleCallback cb, va_list args, void *data, void **return_val)


Detailed Description

Signal API

purple.

Purple is the legal property of its developers, whose names are too numerous to list here. Please refer to the COPYRIGHT file distributed with this source distribution.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA


Function Documentation

gulong purple_signal_connect void *  instance,
const char *  signal,
void *  handle,
PurpleCallback  func,
void *  data
 

Connects a signal handler to a signal for a particular object.

(priority defaults to 0)

Take care not to register a handler function twice. Purple will not correct any mistakes for you in this area.

Parameters:
instance The instance to connect to.
signal The name of the signal to connect.
handle The handle of the receiver.
func The callback function.
data The data to pass to the callback function.
Returns:
The signal handler ID.
See also:
purple_signal_disconnect()

gulong purple_signal_connect_priority void *  instance,
const char *  signal,
void *  handle,
PurpleCallback  func,
void *  data,
int  priority
 

Connects a signal handler to a signal for a particular object.

Take care not to register a handler function twice. Purple will not correct any mistakes for you in this area.

Parameters:
instance The instance to connect to.
signal The name of the signal to connect.
handle The handle of the receiver.
func The callback function.
data The data to pass to the callback function.
priority The priority with which the handler should be called. Signal handlers are called in order from PURPLE_SIGNAL_PRIORITY_LOWEST to PURPLE_SIGNAL_PRIORITY_HIGHEST.
Returns:
The signal handler ID.
See also:
purple_signal_disconnect()

gulong purple_signal_connect_priority_vargs void *  instance,
const char *  signal,
void *  handle,
PurpleCallback  func,
void *  data,
int  priority
 

Connects a signal handler to a signal for a particular object.

The signal handler will take a va_args of arguments, instead of individual arguments.

Take care not to register a handler function twice. Purple will not correct any mistakes for you in this area.

Parameters:
instance The instance to connect to.
signal The name of the signal to connect.
handle The handle of the receiver.
func The callback function.
data The data to pass to the callback function.
priority The order in which the signal should be added to the list
Returns:
The signal handler ID.
See also:
purple_signal_disconnect()

gulong purple_signal_connect_vargs void *  instance,
const char *  signal,
void *  handle,
PurpleCallback  func,
void *  data
 

Connects a signal handler to a signal for a particular object.

(priority defaults to 0) The signal handler will take a va_args of arguments, instead of individual arguments.

Take care not to register a handler function twice. Purple will not correct any mistakes for you in this area.

Parameters:
instance The instance to connect to.
signal The name of the signal to connect.
handle The handle of the receiver.
func The callback function.
data The data to pass to the callback function.
Returns:
The signal handler ID.
See also:
purple_signal_disconnect()

void purple_signal_disconnect void *  instance,
const char *  signal,
void *  handle,
PurpleCallback  func
 

Disconnects a signal handler from a signal on an object.

Parameters:
instance The instance to disconnect from.
signal The name of the signal to disconnect.
handle The handle of the receiver.
func The registered function to disconnect.
See also:
purple_signal_connect()

void purple_signal_emit void *  instance,
const char *  signal,
  ...
 

Emits a signal.

Parameters:
instance The instance emitting the signal.
signal The signal being emitted.
See also:
purple_signal_connect()

purple_signal_disconnect()

void* purple_signal_emit_return_1 void *  instance,
const char *  signal,
  ...
 

Emits a signal and returns the first non-NULL return value.

Further signal handlers are NOT called after a handler returns something other than NULL.

Parameters:
instance The instance emitting the signal.
signal The signal being emitted.
Returns:
The first non-NULL return value

void purple_signal_emit_vargs void *  instance,
const char *  signal,
va_list  args
 

Emits a signal, using a va_list of arguments.

Parameters:
instance The instance emitting the signal.
signal The signal being emitted.
args The arguments list.
See also:
purple_signal_connect()

purple_signal_disconnect()

void* purple_signal_emit_vargs_return_1 void *  instance,
const char *  signal,
va_list  args
 

Emits a signal and returns the first non-NULL return value.

Further signal handlers are NOT called after a handler returns something other than NULL.

Parameters:
instance The instance emitting the signal.
signal The signal being emitted.
args The arguments list.
Returns:
The first non-NULL return value

void purple_signal_get_values void *  instance,
const char *  signal,
PurpleValue **  ret_value,
int *  num_values,
PurpleValue ***  values
 

Returns a list of value types used for a signal.

Parameters:
instance The instance the signal is registered to.
signal The signal.
ret_value The return value from the last signal handler.
num_values The returned number of values.
values The returned list of values.

gulong purple_signal_register void *  instance,
const char *  signal,
PurpleSignalMarshalFunc  marshal,
PurpleValue ret_value,
int  num_values,
  ...
 

Registers a signal in an instance.

Parameters:
instance The instance to register the signal for.
signal The signal name.
marshal The marshal function.
ret_value The return value type, or NULL for no return value.
num_values The number of values to be passed to the callbacks.
... The values to pass to the callbacks.
Returns:
The signal ID local to that instance, or 0 if the signal couldn't be registered.
See also:
PurpleValue

void purple_signal_unregister void *  instance,
const char *  signal
 

Unregisters a signal in an instance.

Parameters:
instance The instance to unregister the signal for.
signal The signal name.

void purple_signals_disconnect_by_handle void *  handle  ) 
 

Removes all callbacks associated with a receiver handle.

Parameters:
handle The receiver handle.

void purple_signals_unregister_by_instance void *  instance  ) 
 

Unregisters all signals in an instance.

Parameters:
instance The instance to unregister the signal for.