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Notes: plain text notes on the SD card, with an editor that saves by itself (#19)

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The Notes App lists the files of /notes by their first line, newest first:
n starts a note, Enter opens it, r renames its file, d deletes it after
asking, s sorts by name. A new note's file is named after its first line.

The editor wraps at spaces, 38 columns by 8 rows; Fn+arrows move through
the wrapped text, Ctrl+A and Ctrl+E go to the ends of the line. There is no
save key: the note is written five seconds after the last key, on Back, on
leaving the App, when the screen turns off and before the device powers
off. A save writes a temporary file and puts it in the note's place; a save
cut short is put back, or offered, the next time.

A note is up to 16 KB, held in one buffer reserved when it's opened: the
file is read straight into it and typing never makes it grow. A failed
allocation aborts on this device, and with IRC connected the largest free
block is about 31 KB: a first version that copied the note once on loading
restarted the device when a full note was opened with IRC connected.
Editing files of any size is #47.

The Storage App's text viewer gets `e`, which edits a text file up to 16 KB
with the same editor unless the file is read-only.

439 host tests. Checked on the device: docs/milestones/F1.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
This commit is contained in:
twisla
2026-10-06 10:08:10 +02:00
co-authored by Claude Opus 5.5
parent c868977f1c
commit e8a654a15f
17 changed files with 1599 additions and 9 deletions
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src/apps/storage_app.h
+6 -4
View File
@@ -7,6 +7,7 @@
#include "app.h"
#include "apps/file_viewer.h"
#include "apps/maintenance_page.h"
#include "apps/note_editor.h"
#include "dialog_model.h"
#include "event_bus.h"
#include "file_list.h"
@@ -25,17 +26,17 @@ namespace roro {
// usage, Storage Clean-up and erasing the card, behind a warning (Q128).
class StorageApp : public App {
public:
StorageApp(FileOps& ops, StorageService& storage, ClockService& clock, UpdateService& update, EventBus& bus)
: ops_(ops), storage_(storage), bus_(bus), maintenance_(storage, clock, bus), viewer_(storage, update) {}
StorageApp(FileOps& ops, StorageService& storage, ClockService& clock, UpdateService& update, PowerService& power, EventBus& bus)
: ops_(ops), storage_(storage), bus_(bus), maintenance_(storage, clock, bus), viewer_(storage, update), noteEditor_(storage, clock, power) {}
void onEnter() override;
void onExit() override;
bool onKey(const KeyEvent& e) override;
bool textEntryActive() const override { return view_ == View::Name; }
bool textEntryActive() const override { return view_ == View::Name || view_ == View::Editor; }
void update(uint32_t nowMs) override;
void draw(Canvas& c) override;
private:
enum class View { Browse, Details, Name, Viewer, Maintenance, NoMemory };
enum class View { Browse, Details, Name, Viewer, Editor, Maintenance, NoMemory };
enum class Ask { None, Delete, Replace, Maintenance };
enum class Wait { None, List, CountToDelete, CountForDetails, Work }; // what the running operation is for
static constexpr int kRows = 8;
@@ -67,6 +68,7 @@ class StorageApp : public App {
EventBus& bus_;
MaintenancePage maintenance_;
FileViewer viewer_;
NoteEditor noteEditor_; // `e` in the text viewer (Q146)
View view_ = View::Browse;
std::string cwd_ = "/", want_ = "/"; // the folder on screen; the one being read