freebsd-skq/lib/libforms/objects.c

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/*-
* Copyright (c) 1995
* Paul Richards. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
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* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Richards.
* 4. The name Paul Richards may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <strhash.h>
#include <ctype.h>
#include <err.h>
#include <ncurses.h>
#include <forms.h>
#include <string.h>
#include <stdlib.h>
#include "internal.h"
extern hash_table *global_bindings;
extern int lineno;
int done=0;
__inline void
inherit_parent(OBJECT *obj, OBJECT *parent)
{
obj->parent = parent;
obj->status = parent->status;
if (!obj->y)
obj->y = parent->y;
if (!obj->x)
obj->x = parent->x;
if (!obj->height)
obj->height = parent->height;
if (!obj->width)
obj->width = parent->width;
if (!obj->attributes && parent->attributes)
obj->attributes = strdup(parent->attributes);
if (!obj->highlight && parent->highlight)
obj->highlight = strdup(parent->highlight);
if (!obj->lnext && parent->lnext)
obj->lnext = strdup(parent->lnext);
if (!obj->lup && parent->lup)
obj->lup = strdup(parent->lup);
if (!obj->ldown && parent->ldown)
obj->ldown = strdup(parent->ldown);
if (!obj->lleft && parent->lleft)
obj->lleft = strdup(parent->lleft);
if (!obj->lright && parent->lright)
obj->lright = strdup(parent->lright);
obj->display = parent->display;
obj->window = parent->window;
}
/*
* Inherit any unspecified properties from the parent. Not
* all properties get passed down to children.
*/
int
inherit_props(char *key, void *data, void *arg)
{
TUPLE *tuple = (TUPLE *)data;
OBJECT *parent = (OBJECT *)arg;
OBJECT *obj = (OBJECT *)tuple->addr;
inherit_parent(obj, parent);
if (obj->bind)
hash_traverse(obj->bind, &inherit_props, obj);
return (1);
}
/*
* Propagate unspecified properties from the parent
* to any attached sub-objects.
*/
void
inherit_properties(OBJECT *obj, OBJECT *parent)
{
inherit_parent(obj, parent);
hash_traverse(obj->bind, &inherit_props, obj);
}
__inline void
clone_object(OBJECT *object, OBJECT *def)
{
int i;
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/* XXX - Should really check if strdup's succeed */
object->type = def->type;
object->status = def->status;
object->parent = def->parent;
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/*
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* Only copy sizes for fixed size objects,
* otherwise inherit from parent. Always
* inherit x and y.
*/
if (def->type != OT_COMPOUND && def->type != OT_FUNCTION) {
object->height = def->height;
object->width = def->width;
}
if (def->attributes)
object->attributes = strdup(def->attributes);
if (def->highlight)
object->highlight = strdup(def->highlight);
if (def->lnext)
object->lnext = strdup(def->lnext);
if (def->lup)
object->lup = strdup(def->lup);
if (def->ldown)
object->ldown = strdup(def->ldown);
if (def->lleft)
object->lleft = strdup(def->lleft);
if (def->lright)
object->lright = strdup(def->lright);
if (def->UserDrawFunc)
object->UserDrawFunc = strdup(def->UserDrawFunc);
if (def->UserProcFunc)
object->UserProcFunc = strdup(def->UserProcFunc);
if (def->OnEntry)
object->OnEntry = strdup(def->OnEntry);
if (def->OnExit)
object->OnExit = strdup(def->OnExit);
object->display = def->display;
object->window = def->window;
switch (object->type) {
case OT_ACTION:
if (def->object.action) {
object->object.action = malloc(sizeof (ACTION_OBJECT));
if (!object->object.action)
errx(-1,
"Failed to allocate memory for copy of action object");
if (def->object.action->text)
object->object.action->text =
strdup(def->object.action->text);
if (def->object.action->action)
object->object.action->action =
strdup(def->object.action->action);
}
break;
case OT_COMPOUND:
if (def->object.compound) {
object->object.compound = malloc(sizeof (COMPOUND_OBJECT));
if (!object->object.compound)
errx(-1,
"Failed to allocate memory for copy of compound object");
if (def->object.compound->defobj)
object->object.compound->defobj =
strdup(def->object.compound->defobj);
}
break;
case OT_FUNCTION:
object->object.function = malloc(sizeof (FUNCTION_OBJECT));
if (!object->object.function)
errx(-1, "Failed to allocate memory for copy of function object");
object->object.function->fn = strdup(def->object.function->fn);
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break;
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case OT_INPUT:
object->object.input = malloc(sizeof (INPUT_OBJECT));
if (!object->object.input)
errx(-1, "Failed to allocate memory for copy of input object");
object->object.input->lbl_flag = def->object.input->lbl_flag;
object->object.input->label = strdup(def->object.input->label);
object->object.input->input = strdup(def->object.input->input);
object->object.input->limit = def->object.input->limit;
break;
case OT_MENU:
object->object.menu = malloc(sizeof (MENU_OBJECT));
if (!object->object.menu)
errx(-1, "Failed to allocate memory for copy of menu object");
object->object.menu->selected = def->object.menu->selected;
for (i=0; i < def->object.menu->no_options; i++) {
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object->object.menu->no_options =
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add_menu_option(object->object.menu,
def->object.menu->options[i]);
if (!object->object.menu->no_options)
errx(-1, "Failed to allocate memory for copy of menu option");
}
break;
case OT_TEXT:
object->object.text = malloc(sizeof (TEXT_OBJECT));
if (!object->object.text)
errx(-1, "Failed to allocate memory for copy of text object");
object->object.text->text = strdup(def->object.text->text);
break;
default:
break;
}
}
/*
* Recursively clone objects in the bindings table.
*/
int
copy_bound_objects(char *key, void *data, void *arg)
{
TUPLE *tuple = (TUPLE *)data;
OBJECT *object = (OBJECT *)arg;
OBJECT *clone, *src;
if (tuple->type != TT_OBJ_DEF && tuple->type != TT_OBJ_INST)
errx(-1, "Invalid tuple type in definition");
src = (OBJECT *)tuple->addr;
clone = malloc(sizeof (OBJECT));
if (!clone)
errx(-1, "Failed to allocate memory for clone object");
clone->bind = hash_create(0);
if (!clone->bind)
errx(-1, "Failed to create hash table for definition copy");
clone_object(clone, src);
bind_tuple(object->bind, key, tuple->type, (FUNCP)clone);
if (src->bind)
hash_traverse(src->bind, &copy_bound_objects, clone);
return (1);
}
int
use_defined_object(OBJECT *object, char *src)
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{
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TUPLE *tuple;
OBJECT *def;
tuple = tuple_search(object, src, TT_OBJ_DEF);
if (!tuple)
return (ST_NOBIND);
else
def = (OBJECT *)tuple->addr;
/* Clone root object */
clone_object(object, def);
/* Now recursively clone sub-objects */
hash_traverse(def->bind, &copy_bound_objects, object);
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}
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/*
* Calculate length of printable part of the string,
* stripping out the attribute modifiers.
*/
int
calc_string_width(char *string)
{
int len, width=0;
if (!string)
return (0);
len = strlen(string);
while (len) {
if (*string != '\\') {
width++;
len--;
string++;
continue;
} else {
string++;
len--;
if (*string == '\\') {
string++;
width++;
len--;
continue;
} else {
while (!isspace(*string)) {
string++;
len--;
}
while (isspace(*string)) {
string ++;
len--;
}
}
}
}
return (width);
}
/* Calculate a default height for a object */
void
calc_object_height(OBJECT *object, char *string)
{
int len;
len = calc_string_width(string);
if (!object->width) {
/*
* This is a failsafe, this routine shouldn't be called
* with a width of 0, the width should be determined
* first.
*/
object->height = 1;
return;
}
if (len < object->width) {
object->height = 1;
return;
} else
object->height = len / object->width;
if ((object->height*object->width) < len)
object->height++;
return;
}
int
add_menu_option(MENU_OBJECT *menu, char *option)
{
char **tmp;
int len;
tmp = (char **)realloc(menu->options, (menu->no_options + 1) * sizeof(char**));
if (!tmp)
return (0);
else
menu->options = tmp;
len = strlen(option) + 1;
menu->options[menu->no_options] = (char *)malloc(len);
if (!menu->options[menu->no_options])
return (0);
strncpy(menu->options[menu->no_options], option, len);
return (++menu->no_options);
}
/* Default object functions */
void
draw_box(OBJECT *object)
{
/* Gross hack for now */
ncurses_draw_box(object);
}
void
draw_shadow(OBJECT *object)
{
/* Gross hack for now */
ncurses_draw_shadow(object);
}