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/*
* ion/ioncore/attach.c
*
* Copyright (c) Tuomo Valkonen 1999-2007.
*
* See the included file LICENSE for details.
*/
#include <string.h>
#include <limits.h>
#include "common.h"
#include "global.h"
#include "region.h"
#include "attach.h"
#include "clientwin.h"
#include "saveload.h"
#include "manage.h"
#include "extlconv.h"
#include "names.h"
#include "focus.h"
#include "screen-notify.h"
/*{{{ Helper */
static WRegion *doit_new(WRegion *mgr,
WWindow *par, const WFitParams *fp,
WRegionDoAttachFn *cont, void *cont_param,
WRegionCreateFn *fn, void *fn_param)
{
WRegion *reg=fn(par, fp, fn_param);
if(reg==NULL)
return NULL;
if(!cont(mgr, reg, cont_param)){
destroy_obj((Obj*)reg);
return NULL;
}
return reg;
}
static WRegion *doit_reparent(WRegion *mgr,
WWindow *par, const WFitParams *fp,
WRegionDoAttachFn *cont, void *cont_param,
WRegion *reg)
{
WFitParams fp2;
WRegion *disposeroot;
WScreen *old_scr=region_screen_of(reg);
if(!region_ancestor_check(mgr, reg)){
warn(TR("Attempt to make region %s manage its ancestor %s."),
region_name(mgr), region_name(reg));
return NULL;
}
disposeroot=region_disposeroot(reg);
if(disposeroot==NULL){
/* Region may not be reparented */
return NULL;
}
if(fp->mode®ION_FIT_WHATEVER){
/* fp->g is not final; substitute size with current to avoid
* useless resizing.
*/
fp2.mode=fp->mode;
fp2.g.x=fp->g.x;
fp2.g.y=fp->g.y;
fp2.g.w=REGION_GEOM(reg).w;
fp2.g.h=REGION_GEOM(reg).h;
fp=&fp2;
}
if(!region_fitrep(reg, par, fp)){
warn(TR("Unable to reparent."));
return NULL;
}
region_detach_manager(reg);
if(old_scr!=NULL)
screen_update_notifywin(old_scr);
ioncore_screen_activity_notify(reg, ioncore_g.notifies.activity);
if(!cont(mgr, reg, cont_param)){
WScreen *scr=region_screen_of(reg);
warn(TR("Unexpected attach error: "
"trying to recover by attaching to screen."));
if(scr!=NULL){
/* Try to attach to screen, to have `reg` attached at least
* somewhere. For better recovery, we could try to get
* a placeholder for `reg` before we detach it, but this
* would add unnecessary overhead in the usual succesfull
* case. (This failure is supposed to be _very_ rare!)
* We intentionally also do not region_postdetach_dispose
* on recovery.
*/
int flags=(region_may_control_focus(reg)
? MPLEX_ATTACH_SWITCHTO
: 0);
if(mplex_attach_simple(&scr->mplex, reg, flags)!=NULL)
return NULL;
}
warn(TR("Failed recovery."));
return NULL;
}
region_postdetach_dispose(reg, disposeroot);
return reg;
}
static WRegion *wrap_load(WWindow *par, const WFitParams *fp,
ExtlTab *tab)
{
return create_region_load(par, fp, *tab);
}
WRegion *ioncore_newly_created=NULL;
static WRegion *doit_load(WRegion *mgr,
WWindow *par, const WFitParams *fp,
WRegionDoAttachFn *cont, void *cont_param,
ExtlTab tab)
{
WRegion *reg=NULL;
if(extl_table_gets_o(tab, "reg", (Obj**)®)){
if(!OBJ_IS(reg, WRegion))
return FALSE;
}/*else if(extl_table_is_bool_set(tab, "reg_use_new")){
reg=ioncore_newly_created;
if(reg==NULL)
return NULL;
}*/
if(reg!=NULL){
return doit_reparent(mgr, par, fp, cont, cont_param, reg);
}else{
return doit_new(mgr, par, fp, cont, cont_param,
(WRegionCreateFn*)wrap_load, &tab);
}
}
WRegion *region_attach_helper(WRegion *mgr,
WWindow *par, const WFitParams *fp,
WRegionDoAttachFn *fn, void *fn_param,
const WRegionAttachData *data)
{
if(data->type==REGION_ATTACH_NEW){
return doit_new(mgr, par, fp, fn, fn_param,
data->u.n.fn, data->u.n.param);
}else if(data->type==REGION_ATTACH_LOAD){
return doit_load(mgr, par, fp, fn, fn_param, data->u.tab);
}else if(data->type==REGION_ATTACH_REPARENT){
return doit_reparent(mgr, par, fp, fn, fn_param, data->u.reg);
}else{
return NULL;
}
}
/*}}}*/
/*{{{ Reparent check etc. */
bool region_ancestor_check(WRegion *dst, WRegion *reg)
{
WRegion *reg2;
/* Check that reg is not a parent or manager of mgr */
for(reg2=dst; reg2!=NULL; reg2=REGION_MANAGER(reg2)){
if(reg2==reg)
return FALSE;
}
for(reg2=REGION_PARENT_REG(dst); reg2!=NULL; reg2=REGION_PARENT_REG(reg2)){
if(reg2==reg)
return FALSE;
}
return TRUE;
}
void region_postdetach_dispose(WRegion *reg, WRegion *disposeroot)
{
/* disposeroot should be destroyed (as empty and useless) unless it
* still, in fact, is an ancestor of reg.
*/
if(disposeroot!=reg && region_ancestor_check(reg, disposeroot))
region_dispose(disposeroot);
}
/*}}}*/
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