Listen and unlisten are quite bad. Keep Edje name compat as did for
emit. I know it may be used differently, but even them
signal_callback_add is good
On Friday, June 25, 2010, Enlightenment SVN <no-re...@enlightenment.org> wrote:
> Log:
> Implement elm_object_signal_listen and unlisten
>
> elm_object_signal_listen add callback(s) for edje object(s) of the widget.
> elm_object_signal_unlisten delete this callback.
> They're general functions, and every widget should set hooks for these.
>
> It will improve elm extension flexibility. We have already
> elm_object_signal_emit to send signals for the widgets theme, adding
> callbacks
> is an expected step.
>
> It provides a way to support sound on widgets. For example, in the elm
> extension
> we could emit "file_to_play", "play", and add a callback with
> elm_object_signal_listen for "*", "play". The callback function could use
> the signal received to request the file to be played by the backend
> sound system.
>
> Certainly we should look for a better way to provide support for sound
> on edje, but for now, it does the work. And anyway, it's only a use case
> for these new functions.
>
>
> Author: bdilly
> Date: 2010-06-25 15:38:32 -0700 (Fri, 25 Jun 2010)
> New Revision: 49868
>
> Modified:
> trunk/TMP/st/elementary/src/lib/Elementary.h.in
> trunk/TMP/st/elementary/src/lib/elm_main.c
> trunk/TMP/st/elementary/src/lib/elm_priv.h
> trunk/TMP/st/elementary/src/lib/elm_widget.c
>
> Modified: trunk/TMP/st/elementary/src/lib/Elementary.h.in
> ===================================================================
> --- trunk/TMP/st/elementary/src/lib/Elementary.h.in 2010-06-25 22:28:06
> UTC (rev 49867)
> +++ trunk/TMP/st/elementary/src/lib/Elementary.h.in 2010-06-25 22:38:32
> UTC (rev 49868)
> @@ -288,6 +288,8 @@
> EAPI void elm_object_scroll_freeze_pop(Evas_Object *obj);
>
> EAPI void elm_object_signal_emit(Evas_Object *obj, const char
> *emission, const char *source);
> + EAPI void elm_object_signal_listen(Evas_Object *obj, const char
> *emission, const char *source, void (*func) (void *data, Evas_Object *o,
> const char *emission, const char *source), void *data);
> + EAPI void *elm_object_signal_unlisten(Evas_Object *obj, const
> char *emission, const char *source, void (*func) (void *data, Evas_Object *o,
> const char *emission, const char *source));
>
> EAPI void elm_coords_finger_size_adjust(int times_w, Evas_Coord
> *w, int times_h, Evas_Coord *h);
>
>
> Modified: trunk/TMP/st/elementary/src/lib/elm_main.c
> ===================================================================
> --- trunk/TMP/st/elementary/src/lib/elm_main.c 2010-06-25 22:28:06 UTC (rev
> 49867)
> +++ trunk/TMP/st/elementary/src/lib/elm_main.c 2010-06-25 22:38:32 UTC (rev
> 49868)
> @@ -1409,3 +1409,45 @@
> {
> elm_widget_signal_emit(obj, emission, source);
> }
> +
> +/**
> + * Add a callback for a signal emitted by widget edje object.
> + *
> + * This function connects a callback function to a signal emitted by the
> + * edje object of the obj.
> + * Globs can occur in either the emission or source name.
> + *
> + * @param obj The object
> + * @param emission The signal's name.
> + * @param source The signal's source.
> + * @param func The callback function to be executed when the signal is
> + * emitted.
> + * @param data A pointer to data to pass in to the callback function.
> + * @ingroup General
> + */
> +EAPI void elm_object_signal_listen(Evas_Object *obj, const char *emission,
> const char *source, void (*func) (void *data, Evas_Object *o, const char
> *emission, const char *source), void *data)
> +{
> + elm_widget_signal_listen(obj, emission, source, func, data);
> +}
> +
> +/**
> + * Remove a signal-triggered callback from an widget edje object.
> + *
> + * This function removes a callback, previoulsy attached to a signal emitted
> + * by the edje object of the obj.
> + * The parameters emission, source and func must match exactly those passed
> to
> + * a previous call to elm_object_signal_listen(). The data pointer that
> + * was passed to this call will be returned.
> + *
> + * @param obj The object
> + * @param emission The signal's name.
> + * @param source The signal's source.
> + * @param func The callback function to be executed when the signal is
> + * emitted.
> + * @return The data pointer
> + * @ingroup General
> + */
> +EAPI void *elm_object_signal_unlisten(Evas_Object *obj, const char
> *emission, const char *source, void (*func) (void *data, Evas_Object *o,
> const char *emission, const char *source))
> +{
> + return elm_widget_signal_unlisten(obj, emission, source, func);
> +}
>
> Modified: trunk/TMP/st/elementary/src/lib/elm_priv.h
> ===================================================================
> --- trunk/TMP/st/elementary/src/lib/elm_priv.h 2010-06-25 22:28:06 UTC (rev
> 49867)
> +++ trunk/TMP/st/elementary/src/lib/elm_priv.h 2010-06-25 22:38:32 UTC (rev
> 49868)
> @@ -139,6 +139,8 @@
> EAPI void elm_widget_theme_hook_set(Evas_Object *obj, void (*func)
> (Evas_Object *obj));
> EAPI void elm_widget_changed_hook_set(Evas_Object *obj, void (*func)
> (Evas_Object *obj));
> EAPI void elm_widget_signal_emit_hook_set(Evas_Object *obj, void
> (*func) (Evas_Object *obj, const char *emission, const char *source));
> +EAPI void elm_widget_signal_listen_hook_set(Evas_Object *obj, void
> (*func) (Evas_Object *obj, const char *emission, const char *source, void
> (*func_cb) (void *data, Evas_Object *o, const char *emission, const char
> *source), void *data));
> +EAPI void elm_widget_signal_unlisten_hook_set(Evas_Object *obj, void
> *(*func) (Evas_Object *obj, const char *emission, const char *source, void
> (*func_cb) (void *data, Evas_Object *o, const char *emission, const char
> *source)));
> EAPI void elm_widget_theme(Evas_Object *obj);
> EAPI void elm_widget_on_focus_hook_set(Evas_Object *obj, void
> (*func) (void *data, Evas_Object *obj), void *data);
> EAPI void elm_widget_on_change_hook_set(Evas_Object *obj, void
> (*func) (void *data, Evas_Object *obj), void *data);
> @@ -150,6 +152,8 @@
> EAPI void elm_widget_resize_object_set(Evas_Object *obj, Evas_Object
> *sobj);
> EAPI void elm_widget_hover_object_set(Evas_Object *obj, Evas_Object
> *sobj);
> EAPI void elm_widget_signal_emit(Evas_Object *obj, const char
> *emission, const char *source);
> +EAPI void elm_widget_signal_listen(Evas_Object *obj, const char
> *emission, const char *source, void (*func) (void *data, Evas_Object *o,
> const char *emission, const char *source), void *data);
> +EAPI void *elm_widget_signal_unlisten(Evas_Object *obj, const char
> *emission, const char *source, void (*func) (void *data, Evas_Object *o,
> const char *emission, const char *source));
> EAPI void elm_widget_can_focus_set(Evas_Object *obj, int can_focus);
> EAPI int elm_widget_can_focus_get(const Evas_Object *obj);
> EAPI int elm_widget_focus_get(const Evas_Object *obj);
>
> Modified: trunk/TMP/st/elementary/src/lib/elm_widget.c
> ===================================================================
> --- trunk/TMP/st/elementary/src/lib/elm_widget.c 2010-06-25 22:28:06
> UTC (rev 49867)
> +++ trunk/TMP/st/elementary/src/lib/elm_widget.c 2010-06-25 22:38:32
> UTC (rev 49868)
> @@ -29,6 +29,14 @@
> void (*theme_func) (Evas_Object *obj);
> void (*signal_func) (Evas_Object *obj, const char *emission,
> const char *source);
> + void (*listen_func) (Evas_Object *obj, const char *emission,
> + const char *source, void (*func) (void *data,
> + Evas_Object *o, const char *emission,
> + const char *source), void *data);
> + void *(*unlisten_func) (Evas_Object *obj, const char *emission,
> + const char *source, void (*func) (void
> *data,
> + Evas_Object *o, const char *emission,
> + const char *source));
> void (*changed_func) (Evas_Object *obj);
> void (*on_focus_func) (void *data, Evas_Object *obj);
> void *on_focus_data;
> @@ -171,6 +179,20 @@
> }
>
> EAPI void
> +elm_widget_signal_listen_hook_set(Evas_Object *obj, void (*func)
> (Evas_Object *obj, const char *emission, const char *source, void (*func_cb)
> (void *data, Evas_Object *o, const char *emission, const char *source), void
> *data))
> +{
> + API_ENTRY return;
> + sd->listen_func = func;
> +}
> +
> +EAPI void
> +elm_widget_signal_unlisten_hook_set(Evas_Object *obj, void *(*func)
> (Evas_Object *obj, const char *emission, const char *source, void (*func_cb)
> (void *data, Evas_Object *o, const char *emission, const char *source)))
> +{
> + API_ENTRY return;
> + sd->unlisten_func = func;
> +}
> +
> +EAPI void
> elm_widget_theme(Evas_Object *obj)
> {
> const Eina_List *l;
> @@ -610,6 +632,22 @@
> }
>
> EAPI void
> +elm_widget_signal_listen(Evas_Object *obj, const char *emission, const char
> *source, void (*func) (void *data, Evas_Object *o, const char *emission,
> const char *source), void *data)
> +{
> + API_ENTRY return;
> + if (!sd->listen_func) return;
> + sd->listen_func(obj, emission, source, func, data);
> +}
> +
> +EAPI void *
> +elm_widget_signal_unlisten(Evas_Object *obj, const char *emission, const
> char *source, void (*func) (void *data, Evas_Object *o, const char *emission,
> const char *source))
> +{
> + API_ENTRY return NULL;
> + if (!sd->unlisten_func) return NULL;
> + return sd->unlisten_func(obj, emission, source, func);
> +}
> +
> +EAPI void
> elm_widget_focus_set(Evas_Object *obj, int first)
> {
> API_ENTRY return;
>
>
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--
Gustavo Sverzut Barbieri
http://profusion.mobi embedded systems
--------------------------------------
MSN: barbi...@gmail.com
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Mobile: +55 (19) 9225-2202
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