ui/ncurses: allow tab/backtab to skip through a widget's fields
[petitboot] / ui / ncurses / nc-widgets.c
index 8632aff11180375079ba500c78a9e1b69a097be2..5592db9c7769a3c68fc03497776f469d208d0abc 100644 (file)
@@ -15,9 +15,9 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#define _GNU_SOURCE
-
+#if defined(HAVE_CONFIG_H)
 #include "config.h"
 #include "config.h"
+#endif
 
 #include <linux/input.h> /* This must be included before ncurses.h */
 #if defined HAVE_NCURSESW_CURSES_H
 
 #include <linux/input.h> /* This must be included before ncurses.h */
 #if defined HAVE_NCURSESW_CURSES_H
@@ -52,7 +52,6 @@
 #include <log/log.h>
 #include <util/util.h>
 
 #include <log/log.h>
 #include <util/util.h>
 
-#include "config.h"
 #include "nc-cui.h"
 #include "nc-widgets.h"
 
 #include "nc-cui.h"
 #include "nc-widgets.h"
 
@@ -78,6 +77,9 @@ struct nc_widgetset {
        void    (*widget_focus)(struct nc_widget *, void *);
        void    *widget_focus_arg;
        FIELD   *cur_field;
        void    (*widget_focus)(struct nc_widget *, void *);
        void    *widget_focus_arg;
        FIELD   *cur_field;
+
+       /* custom validators */
+       FIELDTYPE *ipv4_multi_type;
 };
 
 struct nc_widget {
 };
 
 struct nc_widget {
@@ -106,6 +108,7 @@ struct nc_widget_checkbox {
 };
 
 struct nc_widget_textbox {
 };
 
 struct nc_widget_textbox {
+       struct nc_widgetset     *set;
        struct nc_widget        widget;
 };
 
        struct nc_widget        widget;
 };
 
@@ -132,6 +135,11 @@ struct nc_widget_button {
 static void widgetset_add_field(struct nc_widgetset *set, FIELD *field);
 static void widgetset_remove_field(struct nc_widgetset *set, FIELD *field);
 
 static void widgetset_add_field(struct nc_widgetset *set, FIELD *field);
 static void widgetset_remove_field(struct nc_widgetset *set, FIELD *field);
 
+static bool key_is_select(int key)
+{
+       return key == ' ' || key == '\r' || key == '\n' || key == KEY_ENTER;
+}
+
 static bool process_key_nop(struct nc_widget *widget __attribute__((unused)),
                FORM *form __attribute((unused)),
                int key __attribute__((unused)))
 static bool process_key_nop(struct nc_widget *widget __attribute__((unused)),
                FORM *form __attribute((unused)),
                int key __attribute__((unused)))
@@ -206,7 +214,7 @@ static bool checkbox_process_key(struct nc_widget *widget,
 {
        struct nc_widget_checkbox *checkbox = to_checkbox(widget);
 
 {
        struct nc_widget_checkbox *checkbox = to_checkbox(widget);
 
-       if (key != ' ')
+       if (!key_is_select(key))
                return false;
 
        checkbox->checked = !checkbox->checked;
                return false;
 
        checkbox->checked = !checkbox->checked;
@@ -324,6 +332,7 @@ struct nc_widget_textbox *widget_new_textbox(struct nc_widgetset *set,
        FIELD *f;
 
        textbox = talloc_zero(set, struct nc_widget_textbox);
        FIELD *f;
 
        textbox = talloc_zero(set, struct nc_widget_textbox);
+       textbox->set = set;
        textbox->widget.height = 1;
        textbox->widget.width = len;
        textbox->widget.x = x;
        textbox->widget.height = 1;
        textbox->widget.width = len;
        textbox->widget.x = x;
@@ -344,6 +353,67 @@ struct nc_widget_textbox *widget_new_textbox(struct nc_widgetset *set,
        return textbox;
 }
 
        return textbox;
 }
 
+void widget_textbox_set_fixed_size(struct nc_widget_textbox *textbox)
+{
+       field_opts_on(textbox->widget.field, O_STATIC);
+}
+
+void widget_textbox_set_validator_integer(struct nc_widget_textbox *textbox,
+               long min, long max)
+{
+       set_field_type(textbox->widget.field, TYPE_INTEGER, 1, min, max);
+}
+
+void widget_textbox_set_validator_ipv4(struct nc_widget_textbox *textbox)
+{
+       set_field_type(textbox->widget.field, TYPE_IPV4);
+}
+
+static bool check_ipv4_multi_char(int c,
+               const void *arg __attribute__((unused)))
+{
+       return isdigit(c) || c == '.' || c == ' ';
+}
+
+static bool check_ipv4_multi_field(FIELD *field,
+               const void *arg __attribute__((unused)))
+{
+       char *buf = field_buffer(field, 0);
+       unsigned int ip[4];
+       int n, len;
+
+       while (*buf != '\0') {
+               n = sscanf(buf, "%u.%u.%u.%u%n",
+                               &ip[0], &ip[1], &ip[2], &ip[3], &len);
+               if (n != 4)
+                       return false;
+
+               if (ip[0] > 255 || ip[1] > 255 || ip[2] > 255 || ip[3] > 255)
+                       return false;
+
+               for (buf += len; *buf != '\0'; buf++) {
+                       if (isspace(*buf))
+                               continue;
+                       else if (isdigit(*buf))
+                               break;
+                       else
+                               return false;
+               }
+       }
+
+       return true;
+}
+
+void widget_textbox_set_validator_ipv4_multi(struct nc_widget_textbox *textbox)
+{
+       if (!textbox->set->ipv4_multi_type) {
+               textbox->set->ipv4_multi_type = new_fieldtype(
+                               check_ipv4_multi_field,
+                               check_ipv4_multi_char);
+       }
+       set_field_type(textbox->widget.field, textbox->set->ipv4_multi_type);
+}
+
 static void select_option_change(struct select_option *opt, bool selected)
 {
        const char *str;
 static void select_option_change(struct select_option *opt, bool selected)
 {
        const char *str;
@@ -361,13 +431,8 @@ static bool select_process_key(struct nc_widget *w, FORM *form, int key)
        int i, new_idx;
        FIELD *field;
 
        int i, new_idx;
        FIELD *field;
 
-       switch (key) {
-       case ' ':
-       case KEY_ENTER:
-               break;
-       default:
+       if (!key_is_select(key))
                return false;
                return false;
-       }
 
        field = current_field(form);
        new_opt = NULL;
 
        field = current_field(form);
        new_opt = NULL;
@@ -556,15 +621,11 @@ static bool button_process_key(struct nc_widget *widget,
        if (!button->click)
                return false;
 
        if (!button->click)
                return false;
 
-       switch (key) {
-       case ' ':
-       case '\r':
-       case '\n':
-               button->click(button->arg);
-               return true;
-       }
+       if (!key_is_select(key))
+               return false;
 
 
-       return false;
+       button->click(button->arg);
+       return true;
 }
 
 static int button_destructor(void *ptr)
 }
 
 static int button_destructor(void *ptr)
@@ -628,19 +689,26 @@ static void widget_focus_change(struct nc_widget *widget, FIELD *field,
 bool widgetset_process_key(struct nc_widgetset *set, int key)
 {
        struct nc_widget *widget;
 bool widgetset_process_key(struct nc_widgetset *set, int key)
 {
        struct nc_widget *widget;
-       FIELD *field;
+       FIELD *field, *tmp;
        int req = 0;
        int req = 0;
+       bool tab;
 
        field = current_field(set->form);
        assert(field);
 
 
        field = current_field(set->form);
        assert(field);
 
+       tab = false;
+
        /* handle field change events */
        switch (key) {
        case KEY_BTAB:
        /* handle field change events */
        switch (key) {
        case KEY_BTAB:
+               tab = true;
+               /* fall through */
        case KEY_UP:
                req = REQ_PREV_FIELD;
                break;
        case '\t':
        case KEY_UP:
                req = REQ_PREV_FIELD;
                break;
        case '\t':
+               tab = true;
+               /* fall through */
        case KEY_DOWN:
                req = REQ_NEXT_FIELD;
                break;
        case KEY_DOWN:
                req = REQ_NEXT_FIELD;
                break;
@@ -656,8 +724,18 @@ bool widgetset_process_key(struct nc_widgetset *set, int key)
        if (req) {
                widget_focus_change(widget, field, false);
                form_driver(set->form, req);
        if (req) {
                widget_focus_change(widget, field, false);
                form_driver(set->form, req);
-               form_driver(set->form, REQ_END_FIELD);
+
+               /* if we're doing a tabbed-field-change, skip until we
+                * see the next widget */
+               tmp = field;
                field = current_field(set->form);
                field = current_field(set->form);
+
+               for (; tab && tmp != field && field_userptr(field) == widget;) {
+                       form_driver(set->form, req);
+                       field = current_field(set->form);
+               }
+
+               form_driver(set->form, REQ_END_FIELD);
                widget = field_userptr(field);
                widget_focus_change(widget, field, true);
                if (widget->field_focus)
                widget = field_userptr(field);
                widget_focus_change(widget, field, true);
                if (widget->field_focus)
@@ -677,6 +755,8 @@ static int widgetset_destructor(void *ptr)
 {
        struct nc_widgetset *set = ptr;
        free_form(set->form);
 {
        struct nc_widgetset *set = ptr;
        free_form(set->form);
+       if (set->ipv4_multi_type)
+               free_fieldtype(set->ipv4_multi_type);
        return 0;
 }
 
        return 0;
 }