ioncore/activity.c

   1 /*
   2  * ion/ioncore/activity.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2009.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <libtu/setparam.h>
  10 #include <libtu/minmax.h>
  11 #include <libtu/objlist.h>
  12 #include "common.h"
  13 #include "global.h"
  14 #include "region.h"
  15 #include "activity.h"
  16
  17
  18 static ObjList *actlist=NULL;
  19
  20
  21 void region_mark_mgd_activity(WRegion *mgr)
  22 {
  23     bool mgr_marked;
  24
  25     if(mgr==NULL)
  26         return;
  27
  28     mgr_marked=region_is_activity_r(mgr);
  29     mgr->mgd_activity++;
  30
  31     if(!mgr_marked){
  32         region_notify_change(mgr, ioncore_g.notifies.sub_activity);
  33         region_mark_mgd_activity(REGION_MANAGER(mgr));
  34     }
  35 }
  36
  37
  38 void region_clear_mgd_activity(WRegion *mgr)
  39 {
  40     if(mgr==NULL)
  41         return;
  42
  43     mgr->mgd_activity=maxof(0, mgr->mgd_activity-1);
  44
  45     if(!region_is_activity_r(mgr)){
  46         region_notify_change(mgr, ioncore_g.notifies.sub_activity);
  47         region_clear_mgd_activity(REGION_MANAGER(mgr));
  48     }
  49 }
  50
  51
  52 static void propagate_activity(WRegion *reg)
  53 {
  54     region_mark_mgd_activity(REGION_MANAGER(reg));
  55 }
  56
  57
  58 static void propagate_clear(WRegion *reg)
  59 {
  60     region_clear_mgd_activity(REGION_MANAGER(reg));
  61 }
  62
  63
  64 bool region_set_activity(WRegion *reg, int sp)
  65 {
  66     bool set=(reg->flags&REGION_ACTIVITY);
  67     bool nset=libtu_do_setparam(sp, set);
  68
  69     if(!XOR(set, nset))
  70         return nset;
  71
  72     if(nset){
  73         if(REGION_IS_ACTIVE(reg))
  74             return FALSE;
  75
  76         reg->flags|=REGION_ACTIVITY;
  77         objlist_insert_last(&actlist, (Obj*)reg);
  78
  79         if(reg->mgd_activity==0)
  80             propagate_activity(reg);
  81     }else{
  82         reg->flags&=~REGION_ACTIVITY;
  83         objlist_remove(&actlist, (Obj*)reg);
  84
  85         if(reg->mgd_activity==0)
  86             propagate_clear(reg);
  87     }
  88
  89     region_notify_change(reg, ioncore_g.notifies.activity);
  90
  91     return nset;
  92 }
  93
  94
  95 /*EXTL_DOC
  96  * Set activity flag of \var{reg}. The \var{how} parameter must be
  97  * one of \codestr{set}, \codestr{unset} or \codestr{toggle}.
  98  */
  99 EXTL_EXPORT_AS(WRegion, set_activity)
 100 bool region_set_activity_extl(WRegion *reg, const char *how)
 101 {
 102     return region_set_activity(reg, libtu_string_to_setparam(how));
 103 }
 104
 105
 106 /*EXTL_DOC
 107  * Is activity notification set on \var{reg}.
 108  */
 109 EXTL_SAFE
 110 EXTL_EXPORT_MEMBER
 111 bool region_is_activity(WRegion *reg)
 112 {
 113     return (reg->flags&REGION_ACTIVITY);
 114 }
 115
 116
 117 bool region_is_activity_r(WRegion *reg)
 118 {
 119     return (reg->flags&REGION_ACTIVITY || reg->mgd_activity!=0);
 120 }
 121
 122
 123 /*EXTL_DOC
 124  * Iterate over activity list until \var{iterfn} returns \code{false}.
 125  * The function is called in protected mode.
 126  * This routine returns \code{true} if it reaches the end of list
 127  * without this happening.
 128  */
 129 EXTL_SAFE
 130 EXTL_EXPORT
 131 bool ioncore_activity_i(ExtlFn iterfn)
 132 {
 133     return extl_iter_objlist(iterfn, actlist);
 134 }
 135
 136
 137 /*EXTL_DOC
 138  * Returns first region on activity list.
 139  */
 140 EXTL_SAFE
 141 EXTL_EXPORT
 142 WRegion *ioncore_activity_first()
 143 {
 144     if(actlist==NULL)
 145         return NULL;
 146     return (WRegion*)actlist->watch.obj;
 147 }
 148
 149
 150 ObjList *ioncore_activity_list()
 151 {
 152     return actlist;
 153 }
 154
 155
 156 /*EXTL_DOC
 157  * Go to first region on activity list.
 158  */
 159 EXTL_EXPORT
 160 bool ioncore_goto_activity()
 161 {
 162     WRegion *reg=ioncore_activity_first();
 163
 164     if(reg!=NULL)
 165         return region_goto(reg);
 166     else
 167         return FALSE;
 168 }
 169