bgui/gadgets/TreeView/TVGetSet.c

   1 /*
   2  * @(#) $Header$
   3  *
   4  * BGUI Tree List View class
   5  *
   6  * (C) Copyright 1999 Manuel Lemos.
   7  * (C) Copyright 1996-1999 Nick Christie.
   8  * All Rights Reserved.
   9  *
  10  * $Log$
  11  * Revision 42.2  2004/06/16 20:16:49  verhaegs
  12  * Use METHODPROTO, METHOD_END and REGFUNCPROTOn where needed.
  13  *
  14  * Revision 42.1  2000/05/15 19:29:08  stegerg
  15  * replacements for REG macro
  16  *
  17  * Revision 42.0  2000/05/09 22:21:41  mlemos
  18  * Bumped to revision 42.0 before handing BGUI to AROS team
  19  *
  20  * Revision 41.11  2000/05/09 20:35:25  mlemos
  21  * Bumped to revision 41.11
  22  *
  23  * Revision 1.2  2000/05/09 20:00:25  mlemos
  24  * Merged with the branch Manuel_Lemos_fixes.
  25  *
  26  * Revision 1.1.2.2  1999/05/31 01:12:47  mlemos
  27  * Made the method functions take the arguments in the apropriate registers.
  28  *
  29  * Revision 1.1.2.1  1999/02/21 04:07:39  mlemos
  30  * Nick Christie sources.
  31  *
  32  *
  33  *
  34  */
  35
  36 /************************************************************************
  37 ***********************  TREEVIEW CLASS: GET/SET  ***********************
  38 ************************************************************************/
  39
  40
  41 /************************************************************************
  42 ******************************  INCLUDES  *******************************
  43 ************************************************************************/
  44
  45 #include "TreeViewPrivate.h"
  46 #include "TVUtil.h"
  47
  48 /************************************************************************
  49 **************************  LOCAL DEFINITIONS  **************************
  50 ************************************************************************/
  51
  52
  53 /************************************************************************
  54 *************************  EXTERNAL REFERENCES  *************************
  55 ************************************************************************/
  56
  57 /*
  58  * Functions from TVUtil are listed in TVUtil.h
  59  */
  60
  61 /************************************************************************
  62 *****************************  PROTOTYPES  ******************************
  63 ************************************************************************/
  64
  65
  66 /************************************************************************
  67 *****************************  LOCAL DATA  ******************************
  68 ************************************************************************/
  69
  70
  71 /************************************************************************
  72 *****************************  TV_GET()  ********************************
  73 *************************************************************************
  74 * Handle OM_GET: return an object attribute. Supply our class ptr,
  75 * object ptr and an opGet message. Returns TRUE if attribute was
  76 * recognized, FALSE otherwise.
  77 *
  78 *************************************************************************/
  79
  80 METHOD(TV_Get, struct opGet *, opg)
  81 {
  82 TVData  *tv;
  83 ULONG   rc;
  84
  85 tv = (TVData *) INST_DATA(cl,obj);
  86 rc = 1;
  87
  88 switch (opg->opg_AttrID)
  89         {
  90         case TVA_Indentation:
  91                 *(opg->opg_Storage) = tv->tv_Indentation;
  92                 break;
  93
  94         case TVA_Top:
  95                 {
  96                 IPTR    top;
  97
  98                 GetAttr(LISTV_NumEntries,tv->tv_Listview,&top);
  99
 100                 if (top)
 101                         {
 102                         GetAttr(LISTV_Top,tv->tv_Listview,&top);
 103                         *(opg->opg_Storage) = (IPTR) TV_IndexToTreeNode(tv,top);
 104                         }
 105                 else
 106                         *(opg->opg_Storage) = (IPTR)NULL;
 107                 }
 108                 break;
 109
 110         case TVA_NumEntries:
 111                 *(opg->opg_Storage) = tv->tv_NumEntries;
 112                 break;
 113
 114         case TVA_LastClicked:
 115                 *(opg->opg_Storage) = (IPTR) tv->tv_LastClicked;
 116                 break;
 117
 118         case TVA_ViewBounds:
 119                 GetAttr(LISTV_ViewBounds,tv->tv_Listview,opg->opg_Storage);
 120                 break;
 121
 122         default:
 123                 rc = DoSuperMethodA(cl,obj,(Msg) opg);
 124                 break;
 125         }
 126
 127 return(rc);
 128 }
 129 METHOD_END
 130
 131 /************************************************************************
 132 *****************************  TV_SET()  ********************************
 133 *************************************************************************
 134 * Handle OM_SET: set an object attribute. Supply our class ptr,
 135 * object ptr and an opGet message. Returns TRUE if new attribute(s)
 136 * caused a visual update.
 137 *
 138 *************************************************************************/
 139
 140 METHOD(TV_Set, struct opSet *, ops)
 141 {
 142 struct TagItem  *tag;
 143 TVData                  *tv;
 144 ULONG                   rc;
 145 BOOL                    refresh;
 146
 147 tv = (TVData *) INST_DATA(cl,obj);
 148 refresh = FALSE;
 149
 150 /*
 151  * Let our superclass react to OM_SET first
 152  */
 153
 154 rc = DoSuperMethodA(cl,obj,(Msg) ops);
 155
 156 /*
 157  * Now we look at the taglist
 158  */
 159
 160 if ((tag = FindTagItem(TVA_Indentation,ops->ops_AttrList)))
 161         {
 162         tv->tv_Indentation = max(tag->ti_Data,8);
 163         refresh = TRUE;
 164         rc = 1;
 165         }
 166
 167 if (refresh)
 168         DoMethod(obj,TVM_REFRESH,ops->ops_GInfo);
 169
 170 if ((tag = FindTagItem(TVA_Top,ops->ops_AttrList)))
 171         {
 172         struct TagItem  tags[2];
 173         TNPTR                   tn;
 174         ULONG                   pos;
 175
 176         if ((tn = TV_FindTreeNode(RootList(tv),(APTR) tag->ti_Data)))
 177                 {
 178                 if ((pos = TV_TreeNodeToIndex(tv,tn)) != ~0)
 179                         {
 180                         /* debug
 181                         KPrintF("OM_SET: tn=%08lx  pos=%lu\n",tn,pos);
 182                         */
 183
 184                         tags[0].ti_Tag = LISTV_Top;
 185                         tags[0].ti_Data = pos;
 186                         tags[1].ti_Tag = TAG_DONE;
 187                         DoMethod(tv->tv_Listview,OM_SET,tags,ops->ops_GInfo);
 188                         }
 189
 190                 rc = 1;
 191                 }
 192         }
 193
 194 return(rc);
 195 }
 196 METHOD_END
 197