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Eo: Added support for event freeze/thaw. 

SVN revision: 71120
This commit is contained in:
Tom Hacohen 2012-05-15 14:17:03 +00:00
parent 2cf5e56694
commit 3ec36334a4
3 changed files with 257 additions and 0 deletions
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106
legacy/eobj/examples/signals/main.c
View File

@ -67,6 +67,112 @@ main(int argc, char *argv[])
fail_if(ret);
fail_if(pd->cb_count != 0);
/* Freeze/thaw. */
int fcount = 0;
cb_count = 0;
eo_do(obj, eo_event_callback_priority_add(EV_A_CHANGED, EO_CALLBACK_PRIORITY_BEFORE, _a_changed_cb, (void *) 1));
fail_if(pd->cb_count != 1);
eo_do(obj, eo_event_freeze_get(&fcount));
fail_if(fcount != 0);
eo_do(obj, eo_event_freeze());
eo_do(obj, eo_event_freeze_get(&fcount));
fail_if(fcount != 1);
eo_do(obj, eo_event_freeze());
eo_do(obj, eo_event_freeze_get(&fcount));
fail_if(fcount != 2);
eo_do(obj, eo_event_callback_priority_add(EV_A_CHANGED, EO_CALLBACK_PRIORITY_BEFORE, _a_changed_cb, (void *) 2));
fail_if(pd->cb_count != 1);
eo_do(obj, simple_a_set(2));
fail_if(cb_count != 0);
eo_do(obj, eo_event_thaw());
eo_do(obj, eo_event_freeze_get(&fcount));
fail_if(fcount != 1);
eo_do(obj, eo_event_thaw());
eo_do(obj, eo_event_freeze_get(&fcount));
fail_if(fcount != 0);
eo_do(obj, simple_a_set(3));
fail_if(cb_count != 2);
cb_count = 0;
eo_do(obj, eo_event_thaw());
eo_do(obj, eo_event_freeze_get(&fcount));
fail_if(fcount != 0);
eo_do(obj, eo_event_freeze());
eo_do(obj, eo_event_freeze_get(&fcount));
fail_if(fcount != 1);
eo_do(obj, simple_a_set(2));
fail_if(cb_count != 0);
eo_do(obj, eo_event_thaw());
eo_do(obj, eo_event_freeze_get(&fcount));
fail_if(fcount != 0);
eo_do(obj, eo_event_callback_del_lazy(EV_A_CHANGED, _a_changed_cb, &ret));
fail_if(!ret);
eo_do(obj, eo_event_callback_del_lazy(EV_A_CHANGED, _a_changed_cb, &ret));
fail_if(!ret);
eo_do(obj, eo_event_callback_del_lazy(EV_A_CHANGED, _a_changed_cb, &ret));
fail_if(ret);
/* Global Freeze/thaw. */
fcount = 0;
cb_count = 0;
pd->cb_count = 0;
eo_do(obj, eo_event_callback_priority_add(EV_A_CHANGED, EO_CALLBACK_PRIORITY_BEFORE, _a_changed_cb, (void *) 1));
fail_if(pd->cb_count != 1);
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze_get(&fcount));
fail_if(fcount != 0);
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze());
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze_get(&fcount));
fail_if(fcount != 1);
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze());
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze_get(&fcount));
fail_if(fcount != 2);
eo_do(obj, eo_event_callback_priority_add(EV_A_CHANGED, EO_CALLBACK_PRIORITY_BEFORE, _a_changed_cb, (void *) 2));
fail_if(pd->cb_count != 1);
eo_do(obj, simple_a_set(2));
fail_if(cb_count != 0);
eo_class_do(EO_BASE_CLASS, eo_event_global_thaw());
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze_get(&fcount));
fail_if(fcount != 1);
eo_class_do(EO_BASE_CLASS, eo_event_global_thaw());
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze_get(&fcount));
fail_if(fcount != 0);
eo_do(obj, simple_a_set(3));
fail_if(cb_count != 2);
cb_count = 0;
eo_class_do(EO_BASE_CLASS, eo_event_global_thaw());
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze_get(&fcount));
fail_if(fcount != 0);
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze());
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze_get(&fcount));
fail_if(fcount != 1);
eo_do(obj, simple_a_set(2));
fail_if(cb_count != 0);
eo_class_do(EO_BASE_CLASS, eo_event_global_thaw());
eo_class_do(EO_BASE_CLASS, eo_event_global_freeze_get(&fcount));
fail_if(fcount != 0);
eo_unref(obj);
eo_shutdown();
return 0;

75
legacy/eobj/lib/Eo.h
View File

@ -791,6 +791,12 @@ enum {
EO_BASE_SUB_ID_EVENT_CALLBACK_CALL,
EO_BASE_SUB_ID_EVENT_CALLBACK_FORWARDER_ADD,
EO_BASE_SUB_ID_EVENT_CALLBACK_FORWARDER_DEL,
EO_BASE_SUB_ID_EVENT_FREEZE,
EO_BASE_SUB_ID_EVENT_THAW,
EO_BASE_SUB_ID_EVENT_FREEZE_GET,
EO_BASE_SUB_ID_EVENT_GLOBAL_FREEZE,
EO_BASE_SUB_ID_EVENT_GLOBAL_THAW,
EO_BASE_SUB_ID_EVENT_GLOBAL_FREEZE_GET,
EO_BASE_SUB_ID_LAST
};
@ -952,6 +958,75 @@ typedef Eina_Bool (*Eo_Event_Cb)(void *data, Eo *obj, const Eo_Event_Description
*/
#define eo_event_callback_forwarder_del(desc, new_obj) EO_BASE_ID(EO_BASE_SUB_ID_EVENT_CALLBACK_FORWARDER_DEL), EO_TYPECHECK(const Eo_Event_Description *, desc), EO_TYPECHECK(Eo *, new_obj)
/**
* @def eo_event_freeze
* @brief freeze events of object.
*
* Prevents event callbacks from being called for the object.
*
* @see #eo_event_thaw
*/
#define eo_event_freeze() EO_BASE_ID(EO_BASE_SUB_ID_EVENT_FREEZE)
/**
* @def eo_event_thaw
* @brief thaw events of object.
*
* Lets event callbacks be called for the object.
*
* @see #eo_event_freeze
*/
#define eo_event_thaw() EO_BASE_ID(EO_BASE_SUB_ID_EVENT_THAW)
/**
* @def eo_event_freeze_get
* @brief return freeze events of object.
*
* @param fcount[out] The event freeze count of the object.
*
* Return event freeze count.
*
* @see #eo_event_freeze
* @see #eo_event_thaw
*/
#define eo_event_freeze_get(fcount) EO_BASE_ID(EO_BASE_SUB_ID_EVENT_FREEZE_GET), EO_TYPECHECK(int *, fcount)
/**
* @def eo_event_global_freeze
* @brief freeze events of object.
*
* Prevents event callbacks from being called for the object.
*
* @see #eo_event_freeze
* @see #eo_event_global_thaw
*/
#define eo_event_global_freeze() EO_BASE_ID(EO_BASE_SUB_ID_EVENT_GLOBAL_FREEZE)
/**
* @def eo_event_global_thaw
* @brief thaw events of object.
*
* Lets event callbacks be called for the object.
*
* @see #eo_event_thaw
* @see #eo_event_global_freeze
*/
#define eo_event_global_thaw() EO_BASE_ID(EO_BASE_SUB_ID_EVENT_GLOBAL_THAW)
/**
* @def eo_event_global_freeze_get
* @brief return freeze events of object.
*
* @param fcount[out] The event freeze count of the object.
*
* Return event freeze count.
*
* @see #eo_event_freeze_get
* @see #eo_event_global_freeze
* @see #eo_event_global_thaw
*/
#define eo_event_global_freeze_get(fcount) EO_BASE_ID(EO_BASE_SUB_ID_EVENT_GLOBAL_FREEZE_GET), EO_TYPECHECK(int *, fcount)
/**
* @def eo_event_callback_add(obj, desc, cb, data)
* Add a callback for an event.

76
legacy/eobj/lib/eo_base_class.c
View File

@ -7,6 +7,8 @@
EAPI Eo_Op EO_BASE_BASE_ID = EO_NOOP;
static int event_freeze_count = 0;
typedef struct
{
Eina_Inlist *generic_data;
@ -14,6 +16,7 @@ typedef struct
Eina_Inlist *callbacks;
int walking_list;
int event_freeze_count;
} Private_Data;
typedef struct
@ -373,6 +376,9 @@ _ev_cb_call(const Eo *_obj, const void *class_data, va_list *list)
if (ret) *ret = EINA_TRUE;
if (event_freeze_count || pd->event_freeze_count)
return;
/* FIXME: Change eo_ref to _eo_ref and unref. */
eo_ref(obj);
pd->walking_list++;
@ -426,6 +432,62 @@ _ev_cb_forwarder_del(Eo *obj, void *class_data EINA_UNUSED, va_list *list)
eo_do(obj, eo_event_callback_del(desc, _eo_event_forwarder_callback, new_obj));
}
static void
_ev_freeze(Eo *obj EINA_UNUSED, void *class_data, va_list *list EINA_UNUSED)
{
Private_Data *pd = (Private_Data *) class_data;
pd->event_freeze_count++;
}
static void
_ev_thaw(Eo *obj, void *class_data, va_list *list EINA_UNUSED)
{
Private_Data *pd = (Private_Data *) class_data;
if (pd->event_freeze_count > 0)
{
pd->event_freeze_count--;
}
else
{
ERR("Events for object %p have already been thawed.", obj);
}
}
static void
_ev_freeze_get(const Eo *obj EINA_UNUSED, const void *class_data, va_list *list)
{
Private_Data *pd = (Private_Data *) class_data;
int *ret = va_arg(*list, int *);
*ret = pd->event_freeze_count;
}
static void
_ev_global_freeze(const Eo_Class *klass EINA_UNUSED, va_list *list EINA_UNUSED)
{
event_freeze_count++;
}
static void
_ev_global_thaw(const Eo_Class *klass EINA_UNUSED, va_list *list EINA_UNUSED)
{
if (event_freeze_count > 0)
{
event_freeze_count--;
}
else
{
ERR("Global events have already been thawed.");
}
}
static void
_ev_global_freeze_get(const Eo_Class *klass EINA_UNUSED, va_list *list)
{
int *ret = va_arg(*list, int *);
*ret = event_freeze_count;
}
/* EOF event callbacks */
@ -459,6 +521,8 @@ _destructor(Eo *obj, void *class_data)
static void
_class_constructor(Eo_Class *klass)
{
event_freeze_count = 0;
const Eo_Op_Func_Description func_desc[] = {
EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_DATA_SET), _data_set),
EO_OP_FUNC_CONST(EO_BASE_ID(EO_BASE_SUB_ID_DATA_GET), _data_get),
@ -471,6 +535,12 @@ _class_constructor(Eo_Class *klass)
EO_OP_FUNC_CONST(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_CALLBACK_CALL), _ev_cb_call),
EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_CALLBACK_FORWARDER_ADD), _ev_cb_forwarder_add),
EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_CALLBACK_FORWARDER_DEL), _ev_cb_forwarder_del),
EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_FREEZE), _ev_freeze),
EO_OP_FUNC(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_THAW), _ev_thaw),
EO_OP_FUNC_CONST(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_FREEZE_GET), _ev_freeze_get),
EO_OP_FUNC_CLASS(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_GLOBAL_FREEZE), _ev_global_freeze),
EO_OP_FUNC_CLASS(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_GLOBAL_THAW), _ev_global_thaw),
EO_OP_FUNC_CLASS(EO_BASE_ID(EO_BASE_SUB_ID_EVENT_GLOBAL_FREEZE_GET), _ev_global_freeze_get),
EO_OP_FUNC_SENTINEL
};
@ -489,6 +559,12 @@ static const Eo_Op_Description op_desc[] = {
EO_OP_DESCRIPTION_CONST(EO_BASE_SUB_ID_EVENT_CALLBACK_CALL, "?", "Call the event callbacks for an event."),
EO_OP_DESCRIPTION(EO_BASE_SUB_ID_EVENT_CALLBACK_FORWARDER_ADD, "?", "Add an event forwarder."),
EO_OP_DESCRIPTION(EO_BASE_SUB_ID_EVENT_CALLBACK_FORWARDER_DEL, "?", "Delete an event forwarder."),
EO_OP_DESCRIPTION(EO_BASE_SUB_ID_EVENT_FREEZE, "?", "Freezes events."),
EO_OP_DESCRIPTION(EO_BASE_SUB_ID_EVENT_THAW, "?", "Thaws events."),
EO_OP_DESCRIPTION_CONST(EO_BASE_SUB_ID_EVENT_FREEZE_GET, "?", "Get event freeze counter."),
EO_OP_DESCRIPTION_CLASS(EO_BASE_SUB_ID_EVENT_GLOBAL_FREEZE, "?", "Freezes events globally."),
EO_OP_DESCRIPTION_CLASS(EO_BASE_SUB_ID_EVENT_GLOBAL_THAW, "?", "Thaws events globally."),
EO_OP_DESCRIPTION_CLASS(EO_BASE_SUB_ID_EVENT_GLOBAL_FREEZE_GET, "?", "Get global event freeze counter."),
EO_OP_DESCRIPTION_SENTINEL
};