ui/ncurses: Allow boot editor sysinfo updates

We may start a boot editor (via 'New') before we have the sysinfo. To
allow this, we redraw the device select.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

diff --git a/ui/ncurses/nc-boot-editor.c b/ui/ncurses/nc-boot-editor.c
index 5765c955fe14b53747d3b63db126110aac464062..79ca3a74269e7311140cb56de183d0152ac487e7 100644 (file)
--- a/ui/ncurses/nc-boot-editor.c
+++ b/ui/ncurses/nc-boot-editor.c
@@ -59,6 +59,10 @@ struct boot_editor {
        } widgets;
 
        const char              *selected_device;
+       char                    *image;
+       char                    *initrd;
+       char                    *dtb;
+       char                    *args;
 };
 
 static struct boot_editor *boot_editor_from_scr(struct nc_scr *scr)
@@ -268,8 +272,6 @@ static void boot_editor_layout_widgets(struct boot_editor *boot_editor)
        y++;
        widget_move(widget_button_base(boot_editor->widgets.ok_b), y, 9);
        widget_move(widget_button_base(boot_editor->widgets.cancel_b), y, 19);
-
-       pad_refresh(boot_editor);
 }
 
 static void boot_editor_widget_focus(struct nc_widget *widget, void *arg)
@@ -311,7 +313,7 @@ static void boot_editor_populate_device_select(struct boot_editor *boot_editor,
 
        widget_select_drop_options(select);
 
-       for (i = 0; i < sysinfo->n_blockdevs; i++) {
+       for (i = 0; sysinfo && i < sysinfo->n_blockdevs; i++) {
                struct blockdev_info *bd_info = sysinfo->blockdevs[i];
                const char *name;
 
@@ -321,8 +323,7 @@ static void boot_editor_populate_device_select(struct boot_editor *boot_editor,
                                !strcmp(bd_info->name,
                                                boot_editor->selected_device);
 
-               widget_select_add_option(boot_editor->widgets.device_f,
-                               i, name, selected);
+               widget_select_add_option(select, i, name, selected);
        }
 
        /* If we're editing an existing option, the paths will be fully-
@@ -331,8 +332,8 @@ static void boot_editor_populate_device_select(struct boot_editor *boot_editor,
         * changed. */
        selected = !boot_editor->selected_device;
 
-       widget_select_add_option(boot_editor->widgets.device_f,
-                       -1, "Specify paths/URLs manually", selected);
+       widget_select_add_option(select, -1, "Specify paths/URLs manually",
+                       selected);
 }
 
 static bool path_on_device(struct blockdev_info *bd_info,
@@ -355,8 +356,7 @@ static bool path_on_device(struct blockdev_info *bd_info,
 
 
 static void boot_editor_find_device(struct boot_editor *boot_editor,
-               struct pb_boot_data *bd, const struct system_info *sysinfo,
-               char **image, char **initrd, char **dtb)
+               struct pb_boot_data *bd, const struct system_info *sysinfo)
 {
        struct blockdev_info *bd_info, *tmp;
        unsigned int i, len;
@@ -389,12 +389,81 @@ static void boot_editor_find_device(struct boot_editor *boot_editor,
        /* ok, we match; preselect the device option, and remove the common
         * prefix */
        boot_editor->selected_device = bd_info->name;
-       *image += len;
+       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, "image:");
+       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, "dtb:");
+       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, "args:");
+       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, 6,
+                                       "OK", ok_click, boot_editor);
+       boot_editor->widgets.cancel_b = widget_new_button(set, 0, 0, 6,
+                                       "Cancel", cancel_click, boot_editor);
+}
+
+void boot_editor_update(struct boot_editor *boot_editor,
+               const struct system_info *sysinfo)
+{
+       int height;
+
+       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);
+
+       widgetset_post(boot_editor->widgetset);
 
-       if (*initrd)
-               *initrd += len;
-       if (*dtb)
-               *dtb += len;
+       pad_refresh(boot_editor);
 }
 
 struct boot_editor *boot_editor_init(struct cui *cui,
@@ -404,12 +473,7 @@ struct boot_editor *boot_editor_init(struct cui *cui,
                                struct pmenu_item *item,
                                struct pb_boot_data *bd))
 {
-       char *image, *initrd, *dtb, *args;
        struct boot_editor *boot_editor;
-       struct nc_widgetset *set;
-       int field_size;
-
-       (void)sysinfo;
 
        boot_editor = talloc_zero(cui, struct boot_editor);
 
@@ -436,55 +500,21 @@ struct boot_editor *boot_editor_init(struct cui *cui,
 
        if (item) {
                struct pb_boot_data *bd = cod_from_item(item)->bd;
-               image = bd->image;
-               initrd = bd->initrd;
-               dtb = bd->dtb;
-               args = bd->args;
-               boot_editor_find_device(boot_editor, bd, sysinfo,
-                               &image, &initrd, &dtb);
+               boot_editor->image = bd->image;
+               boot_editor->initrd = bd->initrd;
+               boot_editor->dtb = bd->dtb;
+               boot_editor->args = bd->args;
+               boot_editor_find_device(boot_editor, bd, sysinfo);
        } else {
-               image = initrd = dtb = args = "";
+               boot_editor->image = boot_editor->initrd =
+                       boot_editor->dtb = boot_editor->args = "";
        }
 
-       field_size = COLS - 1 - boot_editor->field_x;
-
-       boot_editor->pad = newpad(pad_height(sysinfo->n_blockdevs), COLS);
-
-       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, "image:");
-       boot_editor->widgets.image_f = widget_new_textbox(set, 0, 0,
-                                               field_size, image);
+       boot_editor->pad = newpad(
+                               pad_height(sysinfo ? sysinfo->n_blockdevs : 0),
+                               COLS);
 
-       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, initrd);
-
-       boot_editor->widgets.dtb_l = widget_new_label(set, 0, 0, "dtb:");
-       boot_editor->widgets.dtb_f = widget_new_textbox(set, 0, 0,
-                                               field_size, dtb);
-
-       boot_editor->widgets.args_l = widget_new_label(set, 0, 0, "args:");
-       boot_editor->widgets.args_f = widget_new_textbox(set, 0, 0,
-                                       field_size, args);
-
-       boot_editor->widgets.ok_b = widget_new_button(set, 0, 0, 6,
-                                       "OK", ok_click, boot_editor);
-       boot_editor->widgets.cancel_b = widget_new_button(set, 0, 0, 6,
-                                       "Cancel", cancel_click, boot_editor);
+       boot_editor_setup_widgets(boot_editor, sysinfo);
 
        boot_editor_layout_widgets(boot_editor);
 

diff --git a/ui/ncurses/nc-cui.c b/ui/ncurses/nc-cui.c
index 107539b32a11a1b5974d70caad18ac5d4c36425d..5f1a5e4433555b4cb742ed2e2e3341a86760dba8 100644 (file)
--- a/ui/ncurses/nc-cui.c
+++ b/ui/ncurses/nc-cui.c
@@ -522,10 +522,14 @@ static void cui_update_sysinfo(struct system_info *sysinfo, void *arg)
        if (cui->sysinfo_screen)
                sysinfo_screen_update(cui->sysinfo_screen, sysinfo);
 
-       /* ... and do the same with the config screen */
+       /* ... and do the same with the config screen... */
        if (cui->config_screen)
                config_screen_update(cui->config_screen, cui->config, sysinfo);
 
+       /* ... and the boot editor. */
+       if (cui->boot_editor)
+               boot_editor_update(cui->boot_editor, sysinfo);
+
        cui_update_mm_title(cui);
 }