NetBSD/dist/cdk/binding.c

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#include <cdk.h>
/*
* $Author: garbled $
* $Date: 2001/01/04 19:58:29 $
* $Revision: 1.1.1.1 $
*/
/*
* Declare file local prototypes.
*/
static int mapChtype (chtype key);
/*
* This inserts a binding.
*/
void bindCDKObject (EObjectType cdktype, void *object, chtype key, BINDFN function, void * data)
{
int Index = mapChtype (key);
CDKOBJS *obj = (CDKOBJS *)object;
/*
* When an alarm is set and this function is entered, a very wild
* value for the key is provided, and the index gets messed up big time.
* So we will make sure that index is a valid value before using it.
*/
if ((Index >= 0) && (Index < MAX_BINDINGS))
{
if (cdktype == vFSELECT)
{
bindCDKObject (vENTRY, ((CDKFSELECT *)object)->entryField, key, function, data);
}
else if (cdktype == vALPHALIST)
{
bindCDKObject (vENTRY, ((CDKALPHALIST *)object)->entryField, key, function, data);
}
else
{
if (Index >= obj->bindingCount)
{
unsigned next = (Index + 1);
unsigned need = next * sizeof(CDKBINDING);
if (obj->bindingList != 0)
obj->bindingList = (CDKBINDING *)realloc(obj->bindingList, need);
else
obj->bindingList = (CDKBINDING *)malloc(need);
memset(&(obj->bindingList[obj->bindingCount]), 0,
(next - obj->bindingCount) * sizeof(CDKBINDING));
obj->bindingCount = next;
}
if (obj->bindingList != 0)
{
obj->bindingList[Index].bindFunction = function;
obj->bindingList[Index].bindData = data;
}
}
}
}
/*
* This removes a binding on an object.
*/
void unbindCDKObject (EObjectType cdktype, void *object, chtype key)
{
int Index = mapChtype(key);
CDKOBJS *obj = (CDKOBJS *)object;
/*
* When an alarm is set and this function is entered, a very wild
* value for the key is provided, and the index gets messed up big time.
* So we will make sure that index is a valid value before using it.
*/
if (cdktype == vFSELECT)
{
unbindCDKObject (vENTRY, ((CDKFSELECT *)object)->entryField, key);
}
else if (cdktype == vALPHALIST)
{
unbindCDKObject (vENTRY, ((CDKALPHALIST *)object)->entryField, key);
}
else if (Index >= 0 && Index < obj->bindingCount)
{
obj->bindingList[Index].bindFunction = 0;
obj->bindingList[Index].bindData = 0;
}
}
/*
* This sets all the bindings for the given objects.
*/
void cleanCDKObjectBindings (EObjectType cdktype, void *object)
{
/*
* Since dereferencing a void pointer is a no-no, we have to cast
* our pointer correctly.
*/
if (cdktype == vFSELECT)
{
cleanCDKObjectBindings (vENTRY, ((CDKFSELECT *)object)->entryField);
cleanCDKObjectBindings (vSCROLL, ((CDKFSELECT *)object)->scrollField);
}
else if (cdktype == vALPHALIST)
{
cleanCDKObjectBindings (vENTRY, ((CDKALPHALIST *)object)->entryField);
cleanCDKObjectBindings (vSCROLL, ((CDKALPHALIST *)object)->scrollField);
}
else
{
int x;
CDKOBJS *obj = (CDKOBJS *)object;
for (x=0; x < obj->bindingCount; x++)
{
(obj)->bindingList[x].bindFunction = 0;
(obj)->bindingList[x].bindData = 0;
}
}
}
/*
* This checks to see iof the binding for the key exists. If it does then it
* runs the command and returns a TRUE. If it doesn't it returns a FALSE. This
* way we can 'overwrite' coded bindings.
*/
int checkCDKObjectBind (EObjectType cdktype, void *object, chtype key)
{
int Index = mapChtype (key);
CDKOBJS *obj = (CDKOBJS *)object;
/*
* When an alarm is set and this function is entered, a very wild
* value for the key is provided, and the index gets messed up big time.
* So we will make sure that index is a valid value before using it.
*/
if ((Index >= 0) && (Index < obj->bindingCount))
{
if ( (obj)->bindingList[Index].bindFunction != 0 )
{
BINDFN function = obj->bindingList[Index].bindFunction;
void * data = obj->bindingList[Index].bindData;
function (cdktype, object, data, key);
return (TRUE);
}
}
return (FALSE);
}
/*
* This translates non ascii characters like KEY_UP to an 'equivalent'
* ascii value.
*/
static int mapChtype (chtype key)
{
static const struct {
int key_out;
chtype key_in;
} table[] = {
{ 257, KEY_UP },
{ 258, KEY_DOWN },
{ 259, KEY_LEFT },
{ 260, KEY_RIGHT },
{ 261, KEY_NPAGE },
{ 262, KEY_PPAGE },
{ 263, KEY_HOME },
{ 264, KEY_END },
{ 265, KEY_F0 },
{ 266, KEY_F1 },
{ 267, KEY_F2 },
{ 268, KEY_F3 },
{ 269, KEY_F4 },
{ 270, KEY_F5 },
{ 271, KEY_F6 },
{ 272, KEY_F7 },
{ 273, KEY_A1 },
{ 274, KEY_A3 },
{ 275, KEY_B2 },
{ 276, KEY_C1 },
{ 277, KEY_C3 },
{ 278, KEY_ESC },
};
unsigned n;
for (n = 0; n < sizeof(table)/sizeof(table[0]); n++)
{
if (table[n].key_in == key)
{
key = table[n].key_out;
break;
}
}
return (key);
}