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expo: Add some scene fields needed for text entry

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Add the CLI state, a buffer to hold the old value of the text being
edited and a place to save vidconsole entry context. These will be use
by the textline object.

Set an upper limit on the maximum number of characters in a textline
object supported by expo, at least for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-10-01 19:13:31 -06:00 • committed by Tom Rini
parent 94598d5b0a
commit 93f99b35ec
2 changed files with 24 additions and 0 deletions
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10
boot/scene.c
View file

@ -32,6 +32,14 @@ int scene_new(struct expo *exp, const char *name, uint id, struct scene **scnp)
return log_msg_ret("name", -ENOMEM);
}
abuf_init(&scn->buf);
if (!abuf_realloc(&scn->buf, EXPO_MAX_CHARS + 1)) {
free(scn->name);
free(scn);
return log_msg_ret("buf", -ENOMEM);
}
abuf_init(&scn->entry_save);
INIT_LIST_HEAD(&scn->obj_head);
scn->id = resolve_id(exp, id);
scn->expo = exp;
@ -57,6 +65,8 @@ void scene_destroy(struct scene *scn)
list_for_each_entry_safe(obj, next, &scn->obj_head, sibling)
scene_obj_destroy(obj);
abuf_uninit(&scn->entry_save);
abuf_uninit(&scn->buf);
free(scn->name);
free(scn);
}

14
include/expo.h
View file

@ -7,11 +7,14 @@
#ifndef __EXPO_H
#define __EXPO_H
#include <abuf.h>
#include <dm/ofnode_decl.h>
#include <linux/list.h>
struct udevice;
#include <cli.h>
/**
* enum expoact_type - types of actions reported by the expo
*
@ -121,6 +124,9 @@ struct expo_string {
* @id: ID number of the scene
* @title_id: String ID of title of the scene (allocated)
* @highlight_id: ID of highlighted object, if any
* @cls: cread state to use for input
* @buf: Buffer for input
* @entry_save: Buffer to hold vidconsole text-entry information
* @sibling: Node to link this scene to its siblings
* @obj_head: List of objects in the scene
*/
@ -130,6 +136,9 @@ struct scene {
uint id;
uint title_id;
uint highlight_id;
struct cli_line_state cls;
struct abuf buf;
struct abuf entry_save;
struct list_head sibling;
struct list_head obj_head;
};
@ -180,6 +189,11 @@ enum scene_obj_flags_t {
SCENEOF_OPEN = 1 << 2,
};
enum {
/* Maximum number of characters allowed in an line editor */
EXPO_MAX_CHARS = 250,
};
/**
* struct scene_obj - information about an object in a scene
*