From a361b7a87b7b050583b2e414176904d49451f4f2 Mon Sep 17 00:00:00 2001
From: Jeremy Wall <Jeremy@marzhillstudios.com>
Date: Tue, 5 Nov 2024 15:35:51 -0500
Subject: [PATCH] wip: Informative help text

---
 src/ui/mod.rs | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/src/ui/mod.rs b/src/ui/mod.rs
index e04463d..7c41ecf 100644
--- a/src/ui/mod.rs
+++ b/src/ui/mod.rs
@@ -5,7 +5,6 @@ use std::{
     io::Read,
     path::PathBuf,
     process::ExitCode,
-    time::{Duration, Instant},
 };
 
 use super::sheet::{Address, Tbl};
@@ -17,13 +16,11 @@ use ratatui::{
     layout::{Constraint, Flex, Layout},
     style::{Color, Modifier, Style, Stylize},
     text::{Line, Text},
-    widgets::{Block, Cell, Row, Table, Widget},
+    widgets::{Block, Cell, Paragraph, Row, Table, Widget},
     Frame,
 };
 use tui_textarea::{CursorMove, TextArea};
 
-const DEFAULT_KEY_TIMEOUT: Duration = Duration::from_millis(30);
-
 #[derive(Default, Debug, PartialEq)]
 pub enum Modality {
     #[default]
@@ -131,6 +128,14 @@ impl<'ws> Workspace<'ws> {
         Ok(None)
     }
 
+    fn render_help_text(&self) -> impl Widget {
+        let info_block = Block::bordered().title("Help");
+        Paragraph::new(match self.state.modality {
+            Modality::Navigate => "Navigate Mode:\n* e: Enter edit mode for current cell\n* h,j,k,l: vim style navigation\n* q exit\n* Ctrl-S Save sheet",
+            Modality::CellEdit => "Edit Mode:\n ESC: Exit edit mode\nOtherwise edit as normal",
+        }).block(info_block)
+    }
+
     fn handle_edit_input(&mut self, key: event::KeyEvent) -> Result<Option<ExitCode>> {
         if key.kind == KeyEventKind::Press {
             if let KeyCode::Esc = key.code {
@@ -242,8 +247,8 @@ impl<'widget, 'ws: 'widget> Widget for &'widget Workspace<'ws> {
                 ))
                 .right_aligned(),
             );
-        let [edit_rect, table_rect] =
-            Layout::vertical(&[Constraint::Fill(1), Constraint::Fill(20)])
+        let [edit_rect, table_rect, info_rect] =
+            Layout::vertical(&[Constraint::Fill(1), Constraint::Fill(20), Constraint::Fill(3)])
                 .vertical_margin(2)
                 .horizontal_margin(2)
                 .flex(Flex::Legacy)
@@ -253,6 +258,9 @@ impl<'widget, 'ws: 'widget> Widget for &'widget Workspace<'ws> {
         let table_block = Block::bordered();
         let table = Table::from(&self.tbl).block(table_block);
         table.render(table_rect, buf);
+        // TODO(jwall): render help text?
+        let info_para = self.render_help_text();
+        info_para.render(info_rect, buf);
     }
 }