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elinks/src/document/forms.c
2018-09-09 19:18:53 +02:00

169 lines
2.9 KiB
C

/** The document base functionality
* @file */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "elinks.h"
#include "bfu/listmenu.h"
#include "document/document.h"
#include "document/forms.h"
#include "document/renderer.h"
#include "util/error.h"
#include "util/lists.h"
#include "util/memory.h"
struct form_type_name {
enum form_type num;
unsigned char *name;
};
static struct form_type_name form_type2name[] = {
{ FC_TEXT, "text" },
{ FC_PASSWORD, "password" },
{ FC_FILE, "file" },
{ FC_TEXTAREA, "textarea" },
{ FC_CHECKBOX, "checkbox" },
{ FC_RADIO, "radio" },
{ FC_SELECT, "select" },
{ FC_SUBMIT, "submit" },
{ FC_IMAGE, "image" },
{ FC_HIDDEN, "hidden" },
};
#define FORM_TYPE_COUNT (sizeof(form_type2name)/sizeof(struct form_type_name))
int
str2form_type(unsigned char *s)
{
int n;
for (n = 0; n < FORM_TYPE_COUNT; n++)
if (!strcmp(form_type2name[n].name, s))
return form_type2name[n].num;
return -1;
}
unsigned char *
form_type2str(enum form_type num)
{
int n;
for (n = 0; n < FORM_TYPE_COUNT; n++)
if (form_type2name[n].num == num)
return form_type2name[n].name;
return NULL;
}
#undef FORM_TYPE_COUNT
struct form *
init_form(void)
{
struct form *form = mem_calloc(1, sizeof(*form));
if (!form) return NULL;
/* Make the form initially stretch the whole range. */
form->form_end = INT_MAX;
init_list(form->items);
return form;
}
void
done_form(struct form *form)
{
struct el_form_control *fc;
if (form->next)
del_from_list(form);
mem_free_if(form->action);
mem_free_if(form->name);
mem_free_if(form->onsubmit);
mem_free_if(form->target);
foreach (fc, form->items) {
done_form_control(fc);
}
free_list(form->items);
mem_free(form);
}
int
has_form_submit(struct form *form)
{
struct el_form_control *fc;
assert(form);
if_assert_failed return 0;
assertm(!list_empty(form->items), "form has no items");
foreach (fc, form->items) {
if (fc->type == FC_SUBMIT || fc->type == FC_IMAGE)
return 1;
}
/* Return path :-). */
return 0;
}
int
get_form_control_link(struct document *document, struct el_form_control *fc)
{
int link;
/* Hidden form fields have no links. */
if (fc->type == FC_HIDDEN)
return -1;
if (!document->links_sorted) sort_links(document);
for (link = 0; link < document->nlinks; link++)
if (fc == get_link_form_control(&document->links[link]))
return link;
assertm(0, "Form control has no link.");
return -1;
}
void
done_form_control(struct el_form_control *fc)
{
int i;
assert(fc);
if_assert_failed return;
mem_free_if(fc->id);
mem_free_if(fc->name);
mem_free_if(fc->alt);
mem_free_if(fc->default_value);
for (i = 0; i < fc->nvalues; i++) {
mem_free_if(fc->values[i]);
mem_free_if(fc->labels[i]);
}
mem_free_if(fc->values);
mem_free_if(fc->labels);
if (fc->menu) free_menu(fc->menu);
}