+ boot_editor->state = STATE_CANCEL;
+}
+
+static int layout_pair(struct boot_editor *boot_editor, int y,
+ struct nc_widget_label *label,
+ struct nc_widget_textbox *field)
+{
+ struct nc_widget *label_w = widget_label_base(label);
+ struct nc_widget *field_w = widget_textbox_base(field);
+ widget_move(label_w, y, boot_editor->label_x);
+ widget_move(field_w, y, boot_editor->field_x);
+ return max(widget_height(label_w), widget_height(field_w));
+}
+
+static int pad_height(int blockdevs_height)
+{
+ return 10 + blockdevs_height;
+}
+
+static void boot_editor_layout_widgets(struct boot_editor *boot_editor)
+{
+ struct nc_widget *wf, *wl;
+ int y = 1;
+
+ wl = widget_label_base(boot_editor->widgets.device_l);
+ wf = widget_select_base(boot_editor->widgets.device_f);
+ widget_move(wl, y, boot_editor->label_x);
+ widget_move(wf, y, boot_editor->field_x);
+
+ y += widget_height(wf) + 1;
+
+
+ y += layout_pair(boot_editor, y, boot_editor->widgets.image_l,
+ boot_editor->widgets.image_f);
+
+ y += layout_pair(boot_editor, y, boot_editor->widgets.initrd_l,
+ boot_editor->widgets.initrd_f);
+
+ y += layout_pair(boot_editor, y, boot_editor->widgets.dtb_l,
+ boot_editor->widgets.dtb_f);
+
+ y += layout_pair(boot_editor, y, boot_editor->widgets.args_l,
+ boot_editor->widgets.args_f);
+
+
+ y++;
+ widget_move(widget_button_base(boot_editor->widgets.ok_b), y,
+ boot_editor->field_x);
+ widget_move(widget_button_base(boot_editor->widgets.help_b), y,
+ boot_editor->field_x + 14);
+ widget_move(widget_button_base(boot_editor->widgets.cancel_b), y,
+ boot_editor->field_x + 28);
+}
+
+static void boot_editor_widget_focus(struct nc_widget *widget, void *arg)
+{
+ struct boot_editor *boot_editor = arg;
+ int w_y, s_max;
+
+ w_y = widget_y(widget) + widget_focus_y(widget);
+ s_max = getmaxy(boot_editor->scr.sub_ncw) - 1;
+
+ if (w_y < boot_editor->scroll_y)
+ boot_editor->scroll_y = w_y;
+
+ else if (w_y + boot_editor->scroll_y + 1 > s_max)
+ boot_editor->scroll_y = 1 + w_y - s_max;
+
+ else
+ return;
+
+ pad_refresh(boot_editor);
+}
+
+static void boot_editor_device_select_change(void *arg, int idx)
+{
+ struct boot_editor *boot_editor = arg;
+ if (idx == -1)
+ boot_editor->selected_device = NULL;
+ else
+ boot_editor->selected_device =
+ boot_editor->cui->sysinfo->blockdevs[idx]->name;
+}
+
+static void boot_editor_populate_device_select(struct boot_editor *boot_editor,
+ const struct system_info *sysinfo)
+{
+ struct nc_widget_select *select = boot_editor->widgets.device_f;
+ unsigned int i;
+ bool selected;
+
+ widget_select_drop_options(select);
+
+ for (i = 0; sysinfo && i < sysinfo->n_blockdevs; i++) {
+ struct blockdev_info *bd_info = sysinfo->blockdevs[i];
+ const char *name;
+
+ name = talloc_asprintf(boot_editor, "%s [%s]",
+ bd_info->name, bd_info->uuid);
+ selected = boot_editor->selected_device &&
+ !strcmp(bd_info->name,
+ boot_editor->selected_device);
+
+ widget_select_add_option(select, i, name, selected);
+ }
+
+ /* If we're editing an existing option, the paths will be fully-
+ * resolved. In this case, we want the manual device pre-selected.
+ * However, we only do this if the widget hasn't been manually
+ * changed. */
+ selected = !boot_editor->selected_device;
+
+ widget_select_add_option(select, -1, _("Specify paths/URLs manually"),
+ selected);
+}
+
+static bool path_on_device(struct blockdev_info *bd_info,
+ const char *path)
+{
+ int len;
+
+ if (!bd_info->mountpoint)
+ return false;
+
+ len = strlen(bd_info->mountpoint);
+ if (strncmp(bd_info->mountpoint, path, len))
+ return false;
+
+ /* if the mountpoint doesn't have a trailing slash, ensure that
+ * the path starts with one (so we don't match a "/mnt/sda1/foo" path
+ * on a "/mnt/sda" mountpoint) */
+ return bd_info->mountpoint[len-1] == '/' || path[len] == '/';
+}
+
+
+static void boot_editor_find_device(struct boot_editor *boot_editor,
+ struct pb_boot_data *bd, const struct system_info *sysinfo)
+{
+ struct blockdev_info *bd_info, *tmp;
+ unsigned int i, len;
+
+ if (!sysinfo || !sysinfo->n_blockdevs)
+ return;
+
+ /* find the device for our boot image, by finding the longest
+ * matching blockdev's mountpoint */
+ for (len = 0, i = 0, bd_info = NULL; i < sysinfo->n_blockdevs; i++) {
+ tmp = sysinfo->blockdevs[i];
+ if (!path_on_device(tmp, bd->image))
+ continue;
+ if (strlen(tmp->mountpoint) <= len)
+ continue;
+ bd_info = tmp;
+ len = strlen(tmp->mountpoint);
+ }
+
+ if (!bd_info)
+ return;
+
+ /* ensure that other paths are on this device */
+ if (bd->initrd && !path_on_device(bd_info, bd->initrd))
+ return;
+
+ if (bd->dtb && !path_on_device(bd_info, bd->dtb))
+ return;
+
+ /* ok, we match; preselect the device option, and remove the common
+ * prefix */
+ boot_editor->selected_device = bd_info->name;
+ boot_editor->image += len;
+
+ if (boot_editor->initrd)
+ boot_editor->initrd += len;
+ if (boot_editor->dtb)
+ boot_editor->dtb += len;
+}
+
+static void boot_editor_setup_widgets(struct boot_editor *boot_editor,
+ const struct system_info *sysinfo)
+{
+ struct nc_widgetset *set;
+ int field_size;
+
+ field_size = COLS - 1 - boot_editor->field_x;
+
+ boot_editor->widgetset = set = widgetset_create(boot_editor,
+ boot_editor->scr.main_ncw,
+ boot_editor->pad);
+
+ widgetset_set_widget_focus(boot_editor->widgetset,
+ boot_editor_widget_focus, boot_editor);
+
+ boot_editor->widgets.device_l = widget_new_label(set, 0, 0,
+ _("Device:"));
+ boot_editor->widgets.device_f = widget_new_select(set, 0, 0,
+ field_size);
+ widget_select_on_change(boot_editor->widgets.device_f,
+ boot_editor_device_select_change, boot_editor);
+
+ boot_editor_populate_device_select(boot_editor, sysinfo);
+
+ boot_editor->widgets.image_l = widget_new_label(set, 0, 0,
+ _("Kernel:"));
+ boot_editor->widgets.image_f = widget_new_textbox(set, 0, 0,
+ field_size, boot_editor->image);
+
+ boot_editor->widgets.initrd_l = widget_new_label(set, 0, 0,
+ _("Initrd:"));
+ boot_editor->widgets.initrd_f = widget_new_textbox(set, 0, 0,
+ field_size,
+ boot_editor->initrd);
+
+ boot_editor->widgets.dtb_l = widget_new_label(set, 0, 0,
+ _("Device tree:"));
+ boot_editor->widgets.dtb_f = widget_new_textbox(set, 0, 0,
+ field_size, boot_editor->dtb);
+
+ boot_editor->widgets.args_l = widget_new_label(set, 0, 0,
+ _("Boot arguments:"));
+ boot_editor->widgets.args_f = widget_new_textbox(set, 0, 0,
+ field_size, boot_editor->args);
+
+ boot_editor->widgets.ok_b = widget_new_button(set, 0, 0, 10,
+ _("OK"), ok_click, boot_editor);
+ boot_editor->widgets.help_b = widget_new_button(set, 0, 0, 10,
+ _("Help"), help_click, boot_editor);
+ boot_editor->widgets.cancel_b = widget_new_button(set, 0, 0, 10,
+ _("Cancel"), cancel_click, boot_editor);
+}
+
+void boot_editor_update(struct boot_editor *boot_editor,
+ const struct system_info *sysinfo)
+{
+ int height;
+
+ if (boot_editor->cui->current != boot_editor_scr(boot_editor)) {
+ boot_editor->need_update = true;
+ return;
+ }
+
+ widgetset_unpost(boot_editor->widgetset);
+
+ height = pad_height(sysinfo ? sysinfo->n_blockdevs : 0);
+ if (getmaxy(boot_editor->pad) < height) {
+ delwin(boot_editor->pad);
+ boot_editor->pad = newpad(height, COLS);
+ widgetset_set_windows(boot_editor->widgetset,
+ boot_editor->scr.main_ncw,
+ boot_editor->pad);
+ }
+
+ boot_editor_populate_device_select(boot_editor, sysinfo);
+
+ boot_editor_layout_widgets(boot_editor);
+
+ widgetset_post(boot_editor->widgetset);
+
+ pad_refresh(boot_editor);