/
Component.c
1162 lines (1033 loc) · 30.1 KB
/
Component.c
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/*-
* Copyright (c) 1997-2002 The Protein Laboratory, University of Copenhagen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
*/
#include "apricot.h"
#include <ctype.h>
#include "Component.h"
#include <Component.inc>
#ifdef __cplusplus
extern "C" {
#endif
#undef my
#define inherited CObject->
#define my ((( PComponent) self)-> self)
#define var (( PComponent) self)
typedef Bool ActionProc ( Handle self, Handle item, void * params);
typedef ActionProc *PActionProc;
void
Component_init( Handle self, HV * profile)
{
dPROFILE;
SV * res;
HV * hv;
HE * he;
inherited init( self, profile);
if ( !my-> validate_owner( self, &var-> owner, profile)) {
var-> stage = csDeadInInit;
croak( "Illegal 'owner' reference passed to %s::%s%s", my-> className, "init",
application ? "" : ". Probably you forgot to include 'use Prima::Application' in your code. Error");
}
if ( var-> owner)
((( PComponent) var-> owner)-> self)-> attach( var-> owner, self);
my-> set_name( self, pget_sv( name));
my-> set_delegations( self, pget_sv( delegations));
var-> evQueue = plist_create( 8, 8);
apc_component_create( self);
res = my-> notification_types( self);
hv = ( HV *) SvRV( res);
hv_iterinit( hv);
while (( he = hv_iternext( hv)) != nil) {
char buf[ 1024];
SV ** holder;
int len = snprintf( buf, 1023, "on%s", HeKEY( he));
holder = hv_fetch( profile, buf, len, 0);
if ( holder == nil || SvTYPE( *holder) == SVt_NULL) continue;
my-> add_notification( self, HeKEY( he), *holder, self, -1);
}
sv_free( res);
}
void
Component_setup( Handle self)
{
Event ev = {cmCreate};
ev. gen. source = self;
my-> message( self, &ev);
if ( var-> owner) {
ev. cmd = cmChildEnter;
ev. gen. source = var-> owner;
ev. gen. H = self;
CComponent( var-> owner)-> message( var-> owner, &ev);
}
}
static Bool bring_by_name( Handle self, PComponent item, char * name)
{
return strcmp( name, item-> name) == 0;
}
Handle
Component_bring( Handle self, char * componentName)
{
return my-> first_that_component( self, (void*)bring_by_name, componentName);
}
static Bool
detach_all( Handle child, Handle self)
{
my-> detach( self, child, true);
return false;
}
void
Component_cleanup( Handle self)
{
Event ev = {cmDestroy};
if ( var-> owner) {
Event ev = {cmChildLeave};
ev. gen. source = var-> owner;
ev. gen. H = self;
CComponent( var-> owner)-> message( var-> owner, &ev);
}
if ( var-> components != nil)
list_first_that( var-> components, (void*)detach_all, ( void*) self);
ev. gen. source = self;
my-> message( self, &ev);
}
static Bool
free_private_posts( PostMsg * msg, void * dummy)
{
sv_free( msg-> info1);
sv_free( msg-> info2);
free( msg);
return false;
}
static Bool
free_queue( PEvent event, void * dummy)
{
free( event);
return false;
}
static Bool
free_eventref( Handle self, Handle * org)
{
if ( var-> refs) list_delete( var-> refs, *org);
my-> unlink_notifier( self, *org);
return false;
}
void
Component_done( Handle self)
{
if ( var-> owner)
CComponent( var-> owner)-> detach( var-> owner, self, false);
if ( var-> eventIDs) {
int i;
PList list = var-> events;
hash_destroy( var-> eventIDs, false);
var-> eventIDs = nil;
for ( i = 0; i < var-> eventIDCount; i++) {
int j;
for ( j = 0; j < list-> count; j += 2)
sv_free(( SV *) list-> items[ j + 1]);
list_destroy( list++);
}
free( var-> events);
var-> events = nil;
}
if ( var-> refs) {
Handle * pself = &self;
list_first_that( var-> refs, (void*)free_eventref, pself);
plist_destroy( var-> refs);
var-> refs = nil;
}
if ( var-> postList != nil) {
list_first_that( var-> postList, (void*)free_private_posts, nil);
list_destroy( var-> postList);
free( var-> postList);
var-> postList = nil;
}
if ( var-> evQueue != nil)
{
list_first_that( var-> evQueue, (void*)free_queue, nil);
list_destroy( var-> evQueue);
free( var-> evQueue);
var-> evQueue = nil;
}
if ( var-> components != nil) {
list_destroy( var-> components);
free( var-> components);
var-> components = nil;
}
apc_component_destroy( self);
free( var-> name);
var-> name = nil;
free( var-> evStack);
var-> evStack = nil;
inherited done( self);
}
void
Component_attach( Handle self, Handle object)
{
if ( var-> stage > csNormal) return;
if ( object && kind_of( object, CComponent)) {
if ( var-> components == nil)
var-> components = plist_create( 8, 8);
else
if ( list_index_of( var-> components, object) >= 0) {
warn( "Object attach failed");
return;
}
list_add( var-> components, object);
SvREFCNT_inc( SvRV(( PObject( object))-> mate));
} else
warn( "Object attach failed");
}
void
Component_detach( Handle self, Handle object, Bool kill)
{
if ( object && ( var-> components != nil)) {
int index = list_index_of( var-> components, object);
if ( index >= 0) {
list_delete_at( var-> components, index);
--SvREFCNT( SvRV(( PObject( object))-> mate));
if ( kill) Object_destroy( object);
}
}
}
SV *
Component_name( Handle self, Bool set, SV * name)
{
if ( set) {
free( var-> name);
var-> name = nil;
var-> name = duplicate_string( SvPV_nolen( name));
opt_assign( optUTF8_name, prima_is_utf8_sv(name));
if ( var-> stage >= csNormal)
apc_component_fullname_changed_notify( self);
} else {
name = newSVpv( var-> name ? var-> name : "", 0);
if ( is_opt( optUTF8_name)) SvUTF8_on( name);
return name;
}
return nilSV;
}
Handle
Component_owner( Handle self, Bool set, Handle owner)
{
HV * profile;
if ( !set)
return var-> owner;
profile = newHV();
pset_H( owner, owner);
my-> set( self, profile);
sv_free(( SV *) profile);
return nilHandle;
}
void
Component_set( Handle self, HV * profile)
{
/* this can eliminate unwilling items */
/* from HV before indirect Object::set */
my-> update_sys_handle( self, profile);
if ( pexist( owner)) {
Handle owner, oldOwner = var-> owner;
if ( !my-> validate_owner( self, &owner, profile))
croak( "Illegal 'owner' reference passed to %s::%s", my-> className, "set");
if ( oldOwner && oldOwner != owner) {
Event ev;
ev. cmd = cmChildLeave;
ev. gen. source = oldOwner;
ev. gen. H = self;
if ( oldOwner)
CComponent( oldOwner)-> message( oldOwner, &ev);
}
my-> migrate( self, owner);
var-> owner = owner;
pdelete( owner);
if ( oldOwner != owner) {
Event ev;
ev. cmd = cmChildEnter;
ev. gen. source = owner;
ev. gen. H = self;
if ( owner)
CComponent( owner)-> message( owner, &ev);
ev. cmd = cmChangeOwner;
ev. gen. source = self;
ev. gen. H = oldOwner;
my-> message( self, &ev);
}
}
inherited set ( self, profile);
}
static Bool
find_dup_msg( PEvent event, int * cmd)
{
return event-> cmd == *cmd;
}
Bool
Component_message( Handle self, PEvent event)
{
Bool ret = false;
if ( var-> stage == csNormal) {
if ( var-> evQueue) goto Constructing;
ForceProcess:
protect_object( self);
my-> push_event( self);
my-> handle_event( self, event);
ret = my-> pop_event( self);
if ( !ret) event-> cmd = 0;
unprotect_object( self);
} else if ( var-> stage == csConstructing) {
if ( var-> evQueue == nil)
croak("Object set twice to constructing stage");
Constructing:
switch ( event-> cmd & ctQueueMask) {
case ctDiscardable:
break;
case ctPassThrough:
goto ForceProcess;
case ctSingle:
event-> cmd = ( event-> cmd & ~ctQueueMask) | ctSingleResponse;
if ( list_first_that( var-> evQueue, (void*)find_dup_msg, &event-> cmd) >= 0)
break;
default:
{
void * ev = malloc( sizeof( Event));
if ( ev)
list_add( var-> evQueue, ( Handle) memcpy( ev, event, sizeof( Event)));
}
}
} else if (( var-> stage < csFinalizing) && ( event-> cmd & ctNoInhibit))
goto ForceProcess;
return ret;
}
Bool
Component_can_event( Handle self)
{
return var-> stage == csNormal;
}
void
Component_clear_event( Handle self)
{
my-> set_eventFlag( self, 0);
}
void
Component_push_event( Handle self)
{
if ( var-> stage == csDead)
return;
if ( var-> evPtr == var-> evLimit) {
char * newStack = allocs( 16 + var-> evLimit);
if ( !newStack) croak("Not enough memory");
if ( var-> evStack) {
memcpy( newStack, var-> evStack, var-> evLimit);
free( var-> evStack);
}
var-> evStack = newStack;
var-> evLimit += 16;
}
var-> evStack[ var-> evPtr++] = 1;
}
Bool
Component_pop_event( Handle self)
{
if ( var-> stage == csDead)
return false;
if ( !var-> evStack || var-> evPtr <= 0) {
warn("Component::pop_event call not within message()");
return false;
}
return var-> evStack[ --var-> evPtr];
}
Bool
Component_eventFlag( Handle self, Bool set, Bool eventFlag)
{
if ( var-> stage == csDead)
return false;
if ( !var-> evStack || var-> evPtr <= 0) {
warn("Component::eventFlag call not within message()");
return false;
}
if ( set)
var-> evStack[ var-> evPtr - 1] = eventFlag;
return set ? eventFlag : var-> evStack[ var-> evPtr - 1];
}
void
Component_event_error( Handle self)
{
apc_beep( mbWarning);
}
SV *
Component_get_handle( Handle self)
{
return newSVsv( nilSV);
}
static Bool
oversend( PEvent event, Handle self)
{
my-> message( self, event);
free( event);
return false;
}
void
Component_handle_event( Handle self, PEvent event)
{
switch ( event-> cmd)
{
case cmCreate:
my-> notify( self, "<s", "Create");
if ( var-> stage == csNormal && var-> evQueue) {
PList q = var-> evQueue;
var-> evQueue = nil;
if ( q-> count > 0)
list_first_that( q, (void*)oversend, ( void*) self);
list_destroy( q);
free( q);
}
break;
case cmDestroy:
opt_set( optcmDestroy);
my-> notify( self, "<s", "Destroy");
opt_clear( optcmDestroy);
break;
case cmPost:
{
PPostMsg p = ( PPostMsg) event-> gen. p;
list_delete( var-> postList, ( Handle) p);
my-> notify( self, "<sSS", "PostMessage", p-> info1, p-> info2);
if ( p-> info1) sv_free( p-> info1);
if ( p-> info2) sv_free( p-> info2);
free( p);
}
break;
case cmChangeOwner:
my-> notify( self, "<sH", "ChangeOwner", event-> gen. H);
break;
case cmChildEnter:
my-> notify( self, "<sH", "ChildEnter", event-> gen. H);
break;
case cmChildLeave:
my-> notify( self, "<sH", "ChildLeave", event-> gen. H);
break;
}
}
int
Component_is_owner( Handle self, Handle objectHandle)
{
int depth = 1;
if ( !objectHandle || !kind_of( objectHandle, CComponent))
return 0;
if ( objectHandle == self) return -1;
while ( PComponent(objectHandle)-> owner) {
if ( PComponent(objectHandle)-> owner == self)
return depth;
objectHandle = PComponent(objectHandle)-> owner;
depth++;
}
return 0;
}
Bool
Component_migrate( Handle self, Handle attachTo)
{
PComponent detachFrom = PComponent( var-> owner ? var-> owner : application);
PComponent attachTo_ = PComponent( attachTo ? attachTo : application);
if ( detachFrom != attachTo_) {
if ( attachTo_)
attachTo_ -> self-> attach(( Handle) attachTo_, self);
if ( detachFrom)
detachFrom-> self-> detach(( Handle) detachFrom, self, false);
}
return detachFrom != attachTo_;
}
void
Component_recreate( Handle self)
{
HV * profile = newHV();
pset_H( owner, var-> owner);
my-> update_sys_handle( self, profile);
sv_free(( SV *) profile);
}
Handle
Component_first_that_component( Handle self, void * actionProc, void * params)
{
Handle child = nilHandle;
int i, count;
Handle * list = nil;
if ( actionProc == nil || var-> components == nil)
return nilHandle;
count = var-> components-> count;
if ( count == 0) return nilHandle;
if ( !( list = allocn( Handle, count))) return nilHandle;
memcpy( list, var-> components-> items, sizeof( Handle) * count);
for ( i = 0; i < count; i++)
{
if ((( PActionProc) actionProc)( self, list[ i], params))
{
child = list[ i];
break;
}
}
free( list);
return child;
}
void
Component_post_message( Handle self, SV * info1, SV * info2)
{
PPostMsg p;
Event ev = { cmPost};
if ( var-> stage > csNormal) return;
if (!( p = alloc1( PostMsg))) return;
p-> info1 = newSVsv( info1);
p-> info2 = newSVsv( info2);
p-> h = self;
if ( var-> postList == nil)
list_create( var-> postList = ( List*) malloc( sizeof( List)), 8, 8);
list_add( var-> postList, ( Handle) p);
ev. gen. p = p;
ev. gen. source = ev. gen. H = self;
apc_message( application, &ev, true);
}
void
Component_update_sys_handle( Handle self, HV * profile)
{
}
Bool
Component_validate_owner( Handle self, Handle * owner, HV * profile)
{
dPROFILE;
*owner = pget_H( owner);
if ( *owner != nilHandle) {
Handle x = *owner;
if (((( PObject) x)-> stage > csNormal) || !kind_of( x, CComponent))
return false;
while ( x) {
if ( x == self)
return false;
x = PComponent( x)-> owner;
}
}
return true;
}
void
Component_on_create( Handle self)
{
}
void
Component_on_destroy( Handle self)
{
}
void
Component_on_postmessage( Handle self, SV * info1, SV * info2)
{
}
XS( Component_event_hook_FROMPERL)
{
dXSARGS;
SV *hook;
if ( items == 0) {
GET_CASE:
if ( eventHook)
XPUSHs( sv_2mortal( newSVsv(( SV *) eventHook)));
else
XPUSHs( &PL_sv_undef);
PUTBACK;
return;
}
hook = ST(0);
/* shift unless ref $_[0] */
if ( SvPOK(hook) && !SvROK(hook)) {
if ( items == 1) goto GET_CASE;
hook = ST(1);
}
if ( SvTYPE(hook) == SVt_NULL) {
if ( eventHook) sv_free( eventHook);
eventHook = nil;
PUTBACK;
return;
}
if ( !SvROK( hook) || ( SvTYPE( SvRV( hook)) != SVt_PVCV)) {
warn("Not a CODE reference passed to Prima::Component::event_hook");
PUTBACK;
return;
}
if ( eventHook) sv_free( eventHook);
eventHook = newSVsv( hook);
PUTBACK;
return;
}
XS( Component_notify_FROMPERL)
{
dXSARGS;
Handle self;
SV * res;
HV * hv;
char * name, * s;
int nameLen, rnt, i, ret = -1, evPtr;
SV ** argsv;
int argsc = items - 1;
char buf[ 1024];
SV * privMethod;
Handle * sequence;
int seqCount = 0, stage = csNormal;
PList list = nil;
if ( items < 2)
croak ("Invalid usage of Component.notify");
SP -= items;
self = gimme_the_mate( ST( 0));
name = ( char*) SvPV_nolen( ST( 1));
if ( self == nilHandle)
croak( "Illegal object reference passed to Component.notify");
if ( eventHook) {
dSP;
dPUB_ARGS;
dG_EVAL_ARGS;
int flag;
ENTER;
SAVETMPS;
PUSHMARK( sp);
EXTEND( sp, items);
for ( i = 0; i < items; i++) PUSHs( ST( i));
PUTBACK;
OPEN_G_EVAL;
perl_call_sv( eventHook, G_SCALAR | G_EVAL);
SPAGAIN;
if ( SvTRUE( GvSV( PL_errgv))) {
(void)POPs;
PUB_CHECK;
CLOSE_G_EVAL;
croak( "%s", SvPV_nolen( GvSV( PL_errgv)));
}
CLOSE_G_EVAL;
SPAGAIN;
flag = POPi;
FREETMPS;
LEAVE;
SPAGAIN;
if ( !flag) XSRETURN_IV(0);
}
if ( var-> stage != csNormal) {
if ( !is_opt( optcmDestroy)) XSRETURN_IV(1);
opt_clear( optcmDestroy);
stage = var-> stage;
}
res = my-> notification_types( self);
hv = ( HV *) SvRV( res);
SPAGAIN;
/* fetching notification type */
nameLen = strlen( name);
if ( hv_exists( hv, name, nameLen)) {
SV ** holder = hv_fetch( hv, name, nameLen, 0);
if ( !holder || !SvOK(*holder) || SvTYPE(*holder) == SVt_NULL)
croak("Inconsistent storage in %s::notification_types for %s during Component.notify", var-> self-> className, name);
rnt = SvIV( *holder);
} else {
warn("Unknown notification:%s", name);
rnt = ntDefault;
}
sv_free( res);
SPAGAIN;
/* searching private on_xxx method */
strncat( strcpy( buf, "on_"), name, 1020);
for ( s = buf; *s; s++) *s = tolower(*s);
privMethod = ( SV *) query_method( self, buf, 0);
if ( privMethod) {
privMethod = newRV( privMethod);
seqCount++;
}
SPAGAIN;
/* searching dynamic onXxxx subs */
if ( var-> eventIDs) {
void * ret;
ret = hash_fetch( var-> eventIDs, name, nameLen);
if ( ret != nil) {
list = var-> events + PTR2UV( ret) - 1;
seqCount += list-> count;
}
}
if ( seqCount == 0) XSRETURN_IV(1);
/* filling calling sequence */
sequence = ( Handle *) malloc( seqCount * 2 * sizeof( void *));
if ( !sequence) XSRETURN_IV(1);
i = 0;
if ( privMethod && (( rnt & ntCustomFirst) == 0)) {
sequence[ i++] = self;
sequence[ i++] = ( Handle) privMethod;
}
if ( list) {
int j;
if ( rnt & ntFluxReverse) {
for ( j = list-> count - 1; j > 0; j -= 2) {
sequence[ i++] = list-> items[ j - 1];
sequence[ i++] = list-> items[ j];
}
} else
memcpy( sequence + i, list-> items, list-> count * sizeof( Handle));
}
if ( privMethod && ( rnt & ntCustomFirst)) {
sequence[ i++] = self;
sequence[ i++] = ( Handle) privMethod;
}
/* copying arguments passed from perl */
argsv = ( SV **) malloc( argsc * sizeof( SV *));
if ( !argsv) {
free( sequence);
XSRETURN_IV(1);
}
for ( i = 0; i < argsc; i++) argsv[ i] = ST( i + 1);
argsv[ 0] = ST( 0);
/* entering event */
my-> push_event( self);
SPAGAIN;
/* cycling subs */
rnt &= ntMultiple | ntEvent;
evPtr = var-> evPtr;
for ( i = 0; i < seqCount; i += 2) {
dSP;
dPUB_ARGS;
dG_EVAL_ARGS;
int j;
ENTER;
SAVETMPS;
PUSHMARK( sp);
EXTEND( sp, argsc + (( sequence[ i] == self) ? 0 : 1));
if ( sequence[ i] != self)
PUSHs((( PAnyObject)( sequence[i]))-> mate);
for ( j = 0; j < argsc; j++) PUSHs( argsv[ j]);
PUTBACK;
OPEN_G_EVAL;
perl_call_sv(( SV*) sequence[ i + 1], G_DISCARD | G_EVAL);
if ( SvTRUE( GvSV( PL_errgv))) {
PUB_CHECK;
CLOSE_G_EVAL;
if ( privMethod) sv_free( privMethod);
free( argsv);
free( sequence);
croak( "%s", SvPV_nolen( GvSV( PL_errgv)));
}
CLOSE_G_EVAL;
SPAGAIN;
FREETMPS;
LEAVE;
if (( var-> stage != stage) ||
( var-> evPtr != evPtr) ||
( rnt == ntSingle) ||
(( rnt == ntEvent) && ( var-> evStack[ var-> evPtr - 1] == 0))
) break;
}
SPAGAIN;
/* leaving */
if ( privMethod) sv_free( privMethod);
if ( var-> stage < csDead) ret = my-> pop_event( self);
SPAGAIN;
SP -= items;
XPUSHs( sv_2mortal( newSViv( ret)));
free( argsv);
free( sequence);
PUTBACK;
}
Bool
Component_notify( Handle self, char * format, ...)
{
Bool r;
SV * ret;
va_list args;
va_start( args, format);
ENTER;
SAVETMPS;
ret = call_perl_indirect( self, "notify", format, true, false, args);
va_end( args);
r = ( ret && SvIOK( ret)) ? SvIV( ret) : 0;
if ( ret) my-> set_eventFlag( self, r);
FREETMPS;
LEAVE;
return r;
}
Bool
Component_notify_REDEFINED( Handle self, char * format, ...)
{
Bool r;
SV * ret;
va_list args;
va_start( args, format);
ENTER;
SAVETMPS;
ret = call_perl_indirect( self, "notify", format, true, false, args);
va_end( args);
r = ( ret && SvIOK( ret)) ? SvIV( ret) : 0;
if ( ret) my-> set_eventFlag( self, r);
FREETMPS;
LEAVE;
return r;
}
XS( Component_get_components_FROMPERL)
{
dXSARGS;
Handle self;
Handle * list;
int i, count;
if ( items != 1)
croak ("Invalid usage of Component.get_components");
SP -= items;
self = gimme_the_mate( ST( 0));
if ( self == nilHandle)
croak( "Illegal object reference passed to Component.get_components");
if ( var-> components) {
count = var-> components-> count;
list = var-> components-> items;
EXTEND( sp, count);
for ( i = 0; i < count; i++)
PUSHs( sv_2mortal( newSVsv((( PAnyObject) list[ i])-> mate)));
}
PUTBACK;
return;
}
void Component_get_components ( Handle self) { warn("Invalid call of Component::get_components"); }
void Component_get_components_REDEFINED( Handle self) { warn("Invalid call of Component::get_components"); }
UV
Component_add_notification( Handle self, char * name, SV * subroutine, Handle referer, int index)
{
UV ret;
PList list;
int nameLen = strlen( name);
SV * res;
res = my-> notification_types( self);
if ( !hv_exists(( HV *) SvRV( res), name, nameLen)) {
sv_free( res);
warn("No such event %s", name);
return 0;
}
sv_free( res);
if ( !subroutine || !SvROK( subroutine) || ( SvTYPE( SvRV( subroutine)) != SVt_PVCV)) {
warn("Not a CODE reference passed to %s to Component::add_notification", name);
return 0;
}
if ( referer == nilHandle) referer = self;
if ( var-> eventIDs == nil) {
var-> eventIDs = hash_create();
ret = 0;
} else
ret = (UV) hash_fetch( var-> eventIDs, name, nameLen);
if ( ret == 0) {
hash_store( var-> eventIDs, name, nameLen, INT2PTR(void*, var-> eventIDCount + 1));
if ( var-> events == nil)
var-> events = ( List*) malloc( sizeof( List));
else {
void * cf = realloc( var-> events, ( var-> eventIDCount + 1) * sizeof( List));
if ( cf == nil) free( var-> events);
var-> events = ( List*) cf;
}
if ( var-> events == nil) croak("No enough memory");
list = var-> events + var-> eventIDCount++;
list_create( list, 2, 2);
} else
list = var-> events + PTR2UV( ret) - 1;
ret = (UV) newSVsv( subroutine);
index = list_insert_at( list, referer, index);
list_insert_at( list, ( Handle) ret, index + 1);
if ( referer != self) {
if ( PComponent( referer)-> refs == nil)
PComponent( referer)-> refs = plist_create( 2, 2);
else
if ( list_index_of( PComponent( referer)-> refs, self) >= 0) goto NO_ADDREF;
list_add( PComponent( referer)-> refs, self);
NO_ADDREF:;
if ( var-> refs == nil)
var-> refs = plist_create( 2, 2);
else
if ( list_index_of( var-> refs, referer) >= 0) goto NO_SELFREF;
list_add( var-> refs, referer);
NO_SELFREF:;
}
return ret;
}
void
Component_remove_notification( Handle self, UV id)
{
int i = var-> eventIDCount;
PList list = var-> events;
if ( list == nil) return;
while ( i--) {
int j;
for ( j = 0; j < list-> count; j += 2) {
if ((( UV ) list-> items[ j + 1]) != id) continue;
sv_free(( SV *) list-> items[ j + 1]);
list_delete_at( list, j + 1);
list_delete_at( list, j);
return;
}
list++;
}
}
void
Component_unlink_notifier( Handle self, Handle referer)
{
int i = var-> eventIDCount;
PList list = var-> events;
if ( list == nil) return;
while ( i--) {
int j;
AGAIN: