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Bug 541208 – Functions to easily install and use signals without class

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2008-07-04  Michael Natterer  <mitch@imendio.com>

	Bug 541208 – Functions to easily install and use signals without
	class struct slot

	* gobject.symbols
	* gsignal.[ch] (g_signal_new_class_handler): the same as
	_gtk_binding_signal_new(), to install signals with a callback
	instead of a class struct slot as class closure.

	The next two functions are C convenience and much easier to use
	than the generic overriding and chaining APIs which are intended
	primarily for language bindings:

	(g_signal_override_class_handler): to override a signal with a
	callback instead of a class struct slot.

	(g_signal_chain_from_overridden_handler): to chain up from a
	signal without class struct slot. The API is similar to
	g_signal_emit().


svn path=/trunk/; revision=7157
This commit is contained in:
Michael Natterer
2008-07-04 11:10:17 +00:00
committed by Michael Natterer
parent 548b2bd02b
commit 20d4f6da73
4 changed files with 328 additions and 7 deletions
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28
gobject/gsignal.h
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@@ -277,6 +277,17 @@ guint g_signal_new (const gchar *signal_name,
GType return_type,
guint n_params,
...);
guint g_signal_new_class_handler (const gchar *signal_name,
GType itype,
GSignalFlags signal_flags,
GCallback class_handler,
GSignalAccumulator accumulator,
gpointer accu_data,
GSignalCMarshaller c_marshaller,
GType return_type,
guint n_params,
...);
void g_signal_emitv (const GValue *instance_and_params,
guint signal_id,
GQuark detail,
@@ -380,12 +391,17 @@ guint g_signal_handlers_disconnect_matched (gpointer instance,
gpointer data);
/* --- chaining for language bindings --- */
void g_signal_override_class_closure (guint signal_id,
GType instance_type,
GClosure *class_closure);
void g_signal_chain_from_overridden (const GValue *instance_and_params,
GValue *return_value);
/* --- overriding and chaining --- */
void g_signal_override_class_closure (guint signal_id,
GType instance_type,
GClosure *class_closure);
void g_signal_override_class_handler (const gchar *signal_name,
GType instance_type,
GCallback class_handler);
void g_signal_chain_from_overridden (const GValue *instance_and_params,
GValue *return_value);
void g_signal_chain_from_overridden_handler (gpointer instance,
...);
/* --- convenience --- */