Migrate TUI from cursive to ratatui

Cargo.toml

@@ -25,7 +25,8 @@ chrono = "0.4.11"
 thiserror = "1"
 clap = { version = "2.33", features = ["yaml"] }
 ctrlc = { version = "3.1", features = ["termination"] }
-cursive_table_view = "0.15.0"
+ratatui = "0.29"
+crossterm = "0.28"
 humansize = "1.1.0"
 serde = "1"
 serde_derive = "1"
@@ -44,10 +45,6 @@ grin_servers = { path = "./servers", version = "5.5.1-alpha.0" }
 grin_util = { path = "./util", version = "5.5.1-alpha.0" }
 grin_store = { path = "./store", version = "5.5.1-alpha.0" }
 
-[dependencies.cursive]
-version = "0.21"
-default-features = false
-features = ["crossterm-backend"]
 
 [build-dependencies]
 built = { version = "0.8.0", features = ["git2"]}

src/bin/tui/app.rs

@@ -0,0 +1,152 @@
+// Copyright 2026 The Grin Developers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Central application state for the ratatui-based TUI
+
+use crate::servers::ServerStats;
+use grin_util::logger::LogEntry;
+use ratatui::layout::Rect;
+use ratatui::widgets::TableState;
+use std::collections::VecDeque;
+
+/// Number of log lines retained in the ring buffer
+pub const LOG_BUFFER_SIZE: usize = 200;
+
+/// Top level tabs, in the order they appear in the side menu
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
+pub enum Tab {
+	Status,
+	Peers,
+	Mining,
+	Logs,
+	Version,
+}
+
+impl Tab {
+	pub const ALL: [Tab; 5] = [
+		Tab::Status,
+		Tab::Peers,
+		Tab::Mining,
+		Tab::Logs,
+		Tab::Version,
+	];
+
+	pub fn title(&self) -> &'static str {
+		match self {
+			Tab::Status => "Basic Status",
+			Tab::Peers => "Peers and Sync",
+			Tab::Mining => "Mining",
+			Tab::Logs => "Logs",
+			Tab::Version => "Version Info",
+		}
+	}
+
+	pub fn index(&self) -> usize {
+		Tab::ALL.iter().position(|t| t == self).unwrap_or(0)
+	}
+}
+
+/// Which sub-screen of the Mining tab is showing
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
+pub enum MiningSubview {
+	Workers,
+	Difficulty,
+}
+
+/// Which pane currently receives key input
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
+pub enum Focus {
+	Menu,
+	Content,
+}
+
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
+pub enum DialogKind {
+	Info,
+	Error,
+}
+
+pub struct Dialog {
+	pub text: String,
+	pub kind: DialogKind,
+}
+
+/// All mutable state the UI renders from. Replaces the tree of named
+/// cursive views with a single struct that every `draw` function reads.
+pub struct App {
+	pub tab: Tab,
+	pub mining_subview: MiningSubview,
+	pub focus: Focus,
+	pub stats: Option<ServerStats>,
+	pub logs: VecDeque<LogEntry>,
+	pub peers_table: TableState,
+	pub mining_workers_table: TableState,
+	pub mining_diff_table: TableState,
+	pub dialog: Option<Dialog>,
+	pub should_quit: bool,
+	/// Screen area of the menu list, stored at draw time for mouse hit-testing
+	pub menu_area: Rect,
+}
+
+impl App {
+	pub fn new() -> App {
+		App {
+			tab: Tab::Status,
+			mining_subview: MiningSubview::Workers,
+			focus: Focus::Menu,
+			stats: None,
+			logs: VecDeque::with_capacity(LOG_BUFFER_SIZE),
+			peers_table: TableState::default(),
+			mining_workers_table: TableState::default(),
+			mining_diff_table: TableState::default(),
+			dialog: None,
+			should_quit: false,
+			menu_area: Rect::default(),
+		}
+	}
+
+	/// Number of rows in the table currently on screen, if any
+	pub fn current_table_len(&self) -> usize {
+		let stats = match &self.stats {
+			Some(s) => s,
+			None => return 0,
+		};
+		match self.tab {
+			Tab::Peers => stats.peer_stats.len(),
+			Tab::Mining => match self.mining_subview {
+				MiningSubview::Workers => stats.stratum_stats.worker_stats.len(),
+				MiningSubview::Difficulty => stats.diff_stats.last_blocks.len(),
+			},
+			_ => 0,
+		}
+	}
+
+	pub fn push_log(&mut self, entry: LogEntry) {
+		self.logs.push_front(entry);
+		if self.logs.len() > LOG_BUFFER_SIZE {
+			self.logs.pop_back();
+		}
+	}
+
+	pub fn select_menu_next(&mut self) {
+		let next = (self.tab.index() + 1) % Tab::ALL.len();
+		self.tab = Tab::ALL[next];
+	}
+
+	pub fn select_menu_prev(&mut self) {
+		let len = Tab::ALL.len();
+		let prev = (self.tab.index() + len - 1) % len;
+		self.tab = Tab::ALL[prev];
+	}
+}

src/bin/tui/constants.rs

@@ -12,55 +12,29 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//! Identifiers for various TUI elements, because they may be referenced
-//! from a few different places
-
-// Basic Status view
-pub const VIEW_BASIC_STATUS: &str = "basic_status_view";
-
-// Peer/Sync View
-pub const VIEW_PEER_SYNC: &str = "peer_sync_view";
-pub const TABLE_PEER_STATUS: &str = "peer_status_table";
-
-// Mining View
-pub const VIEW_MINING: &str = "mining_view";
-pub const SUBMENU_MINING_BUTTON: &str = "mining_submenu_button";
-pub const TABLE_MINING_STATUS: &str = "mining_status_table";
-pub const TABLE_MINING_DIFF_STATUS: &str = "mining_diff_status_table";
-
-// Logs View
-pub const VIEW_LOGS: &str = "logs_view";
-
-// Mining View
-pub const VIEW_VERSION: &str = "version_view";
-
-// Menu and root elements
-pub const MAIN_MENU: &str = "main_menu";
-pub const ROOT_STACK: &str = "root_stack";
-
 // Logo (not final, to be used somewhere eventually
-pub const _WELCOME_LOGO: &str = "                 GGGGG                      GGGGGGG         
-               GGGGGGG                      GGGGGGGGG      
-             GGGGGGGGG         GGGG         GGGGGGGGGG     
-           GGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGG    
-          GGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGG   
-         GGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGG  
-        GGGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGGG 
-        GGGGGGGGGGGGGG       GGGGGGGGGGGGGGGGGGGGGGGGGGGGG 
+pub const _WELCOME_LOGO: &str = "                 GGGGG                      GGGGGGG
+               GGGGGGG                      GGGGGGGGG
+             GGGGGGGGG         GGGG         GGGGGGGGGG
+           GGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGG
+          GGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGG
+         GGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGG
+        GGGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGGG
+        GGGGGGGGGGGGGG       GGGGGGGGGGGGGGGGGGGGGGGGGGGGG
        GGGGGGGGGGGGGGG       GGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
        GGGGGGGGGGGGGGG       GGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
-                             GGGGGG                        
-                             GGGGGGG                       
-                             GGGGGGGG                      
+                             GGGGGG
+                             GGGGGGG
+                             GGGGGGGG
        GGGGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGGGG
        GGGGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGGGG
-        GGGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGGGG
-         GGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGGG 
-          GGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGG  
-           GGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGG   
-            GGGGGGGGGG       GGGGGGGG       GGGGGGGGGGG    
-              GGGGGGGG       GGGGGGGG       GGGGGGGGG      
-               GGGGGGG       GGGGGGGG       GGGGGGG        
-                  GGGG       GGGGGGGG       GGGG           
-                    GG       GGGGGGGG       GG             
+        GGGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGGG
+         GGGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGG
+          GGGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGGG
+           GGGGGGGGGGG       GGGGGGGG       GGGGGGGGGGGG
+            GGGGGGGGGG       GGGGGGGG       GGGGGGGGGGG
+              GGGGGGGG       GGGGGGGG       GGGGGGGGG
+               GGGGGGG       GGGGGGGG       GGGGGGG
+                  GGGG       GGGGGGGG       GGGG
+                    GG       GGGGGGGG       GG
                              GGGGGGGG                       ";