ioncore/basicpholder.c

   1 /*
   2  * ion/ioncore/basicpholder.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 2005-2007.
   5  *
   6  * Ion is free software; you can redistribute it and/or modify it under
   7  * the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <libtu/objp.h>
  13 #include <libtu/obj.h>
  14 #include <libtu/pointer.h>
  15
  16 #include "basicpholder.h"
  17
  18
  19 /*{{{ Init/deinit */
  20
  21
  22 static void basicpholder_watch_handler(Watch *watch, Obj *reg)
  23 {
  24     WBasicPHolder *ph=FIELD_TO_STRUCT(WBasicPHolder, reg_watch, watch);
  25     pholder_redirect(&(ph->ph), (WRegion*)reg);
  26 }
  27
  28
  29 bool basicpholder_init(WBasicPHolder *ph, WRegion *reg,
  30                        WBasicPHolderHandler *hnd)
  31 {
  32     assert(reg!=NULL && hnd!=NULL);
  33
  34     pholder_init(&(ph->ph));
  35
  36     watch_init(&(ph->reg_watch));
  37
  38     if(!watch_setup(&(ph->reg_watch), (Obj*)reg, basicpholder_watch_handler)){
  39         pholder_deinit(&(ph->ph));
  40         return FALSE;
  41     }
  42
  43     ph->hnd=hnd;
  44
  45     return TRUE;
  46 }
  47
  48
  49 WBasicPHolder *create_basicpholder(WRegion *reg,
  50                                    WBasicPHolderHandler *hnd)
  51 {
  52     CREATEOBJ_IMPL(WBasicPHolder, basicpholder, (p, reg, hnd));
  53 }
  54
  55
  56 void basicpholder_deinit(WBasicPHolder *ph)
  57 {
  58     watch_reset(&(ph->reg_watch));
  59     pholder_deinit(&(ph->ph));
  60 }
  61
  62
  63 /*}}}*/
  64
  65
  66 /*{{{ Dynfuns */
  67
  68
  69 WRegion *basicpholder_do_attach(WBasicPHolder *ph, int flags,
  70                                 WRegionAttachData *data)
  71 {
  72     WRegion *reg=(WRegion*)ph->reg_watch.obj;
  73
  74     if(reg==NULL || ph->hnd==NULL)
  75         return FALSE;
  76
  77     return ph->hnd(reg, flags, data);
  78 }
  79
  80
  81 bool basicpholder_do_goto(WBasicPHolder *ph)
  82 {
  83     WRegion *reg=(WRegion*)ph->reg_watch.obj;
  84
  85     if(reg!=NULL)
  86         return region_goto((WRegion*)reg);
  87
  88     return FALSE;
  89 }
  90
  91
  92 WRegion *basicpholder_do_target(WBasicPHolder *ph)
  93 {
  94     return (WRegion*)ph->reg_watch.obj;
  95 }
  96
  97
  98 /*}}}*/
  99
 100
 101 /*{{{ Class information */
 102
 103
 104 static DynFunTab basicpholder_dynfuntab[]={
 105     {(DynFun*)pholder_do_attach,
 106      (DynFun*)basicpholder_do_attach},
 107
 108     {(DynFun*)pholder_do_goto,
 109      (DynFun*)basicpholder_do_goto},
 110
 111     {(DynFun*)pholder_do_target,
 112      (DynFun*)basicpholder_do_target},
 113
 114     END_DYNFUNTAB
 115 };
 116
 117 IMPLCLASS(WBasicPHolder, WPHolder, basicpholder_deinit,
 118           basicpholder_dynfuntab);
 119
 120
 121 /*}}}*/
 122