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automatic cursor style handled by the library

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This commit is contained in:
Priec
2025-08-02 15:06:29 +02:00
parent c92c617314
commit 0baf152c3e
8 changed files with 296 additions and 426 deletions
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3
canvas/Cargo.toml
View File

@@ -12,7 +12,7 @@ categories.workspace = true
[dependencies]
common = { path = "../common" }
ratatui = { workspace = true, optional = true }
crossterm = { workspace = true }
crossterm = { workspace = true, optional = true }
anyhow.workspace = true
tokio = { workspace = true, optional = true }
toml = { workspace = true }
@@ -31,6 +31,7 @@ tokio-test = "0.4.4"
default = []
gui = ["ratatui"]
autocomplete = ["tokio"]
cursor-style = ["crossterm"]
[[example]]
name = "autocomplete"

388
canvas/examples/canvas_gui_demo.rs
View File

@@ -1,388 +0,0 @@
// examples/canvas_gui_demo.rs
use std::io;
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyModifiers},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{
backend::{Backend, CrosstermBackend},
layout::{Constraint, Direction, Layout},
style::{Color, Style},
text::{Line, Span},
widgets::{Block, Borders, Paragraph},
Frame, Terminal,
};
use canvas::{
canvas::{
gui::render_canvas,
modes::{AppMode, HighlightState, ModeManager},
state::{ActionContext, CanvasState},
theme::CanvasTheme,
},
CanvasAction, execute,
};
// Simple theme implementation
#[derive(Clone)]
struct DemoTheme;
impl CanvasTheme for DemoTheme {
fn bg(&self) -> Color { Color::Reset }
fn fg(&self) -> Color { Color::White }
fn accent(&self) -> Color { Color::Cyan }
fn secondary(&self) -> Color { Color::Gray }
fn highlight(&self) -> Color { Color::Yellow }
fn highlight_bg(&self) -> Color { Color::DarkGray }
fn warning(&self) -> Color { Color::Red }
fn border(&self) -> Color { Color::Gray }
}
// Demo form state
struct DemoFormState {
fields: Vec<String>,
field_names: Vec<String>,
current_field: usize,
cursor_pos: usize,
mode: AppMode,
highlight_state: HighlightState,
has_changes: bool,
debug_message: String,
}
impl DemoFormState {
fn new() -> Self {
Self {
fields: vec![
"John Doe".to_string(),
"john.doe@example.com".to_string(),
"+1 234 567 8900".to_string(),
"123 Main Street Apt 4B".to_string(),
"San Francisco".to_string(),
"This is a test comment with multiple words".to_string(),
],
field_names: vec![
"Name".to_string(),
"Email".to_string(),
"Phone".to_string(),
"Address".to_string(),
"City".to_string(),
"Comments".to_string(),
],
current_field: 0,
cursor_pos: 0,
mode: AppMode::ReadOnly,
highlight_state: HighlightState::Off,
has_changes: false,
debug_message: "Ready - Use hjkl to move, w for next word, i to edit".to_string(),
}
}
fn enter_edit_mode(&mut self) {
if ModeManager::can_enter_edit_mode(self.mode) {
self.mode = AppMode::Edit;
self.debug_message = "Entered EDIT mode".to_string();
}
}
fn enter_readonly_mode(&mut self) {
if ModeManager::can_enter_read_only_mode(self.mode) {
self.mode = AppMode::ReadOnly;
self.highlight_state = HighlightState::Off;
self.debug_message = "Entered READ-ONLY mode".to_string();
}
}
fn enter_highlight_mode(&mut self) {
if ModeManager::can_enter_highlight_mode(self.mode) {
self.mode = AppMode::Highlight;
self.highlight_state = HighlightState::Characterwise {
anchor: (self.current_field, self.cursor_pos),
};
self.debug_message = "Entered VISUAL mode".to_string();
}
}
}
impl CanvasState for DemoFormState {
fn current_field(&self) -> usize {
self.current_field
}
fn current_cursor_pos(&self) -> usize {
self.cursor_pos
}
fn set_current_field(&mut self, index: usize) {
self.current_field = index.min(self.fields.len().saturating_sub(1));
self.cursor_pos = self.fields[self.current_field].len();
}
fn set_current_cursor_pos(&mut self, pos: usize) {
let max_pos = self.fields[self.current_field].len();
self.cursor_pos = pos.min(max_pos);
}
fn current_mode(&self) -> AppMode {
self.mode
}
fn get_current_input(&self) -> &str {
&self.fields[self.current_field]
}
fn get_current_input_mut(&mut self) -> &mut String {
&mut self.fields[self.current_field]
}
fn inputs(&self) -> Vec<&String> {
self.fields.iter().collect()
}
fn fields(&self) -> Vec<&str> {
self.field_names.iter().map(|s| s.as_str()).collect()
}
fn has_unsaved_changes(&self) -> bool {
self.has_changes
}
fn set_has_unsaved_changes(&mut self, changed: bool) {
self.has_changes = changed;
}
fn handle_feature_action(&mut self, action: &CanvasAction, _context: &ActionContext) -> Option<String> {
match action {
CanvasAction::Custom(cmd) => {
match cmd.as_str() {
"enter_edit_mode" => {
self.enter_edit_mode();
Some("Entered edit mode".to_string())
}
"enter_readonly_mode" => {
self.enter_readonly_mode();
Some("Entered read-only mode".to_string())
}
"enter_highlight_mode" => {
self.enter_highlight_mode();
Some("Entered highlight mode".to_string())
}
_ => None,
}
}
_ => None,
}
}
}
/// Simple key mapping - users have full control!
async fn handle_key_press(key: KeyCode, modifiers: KeyModifiers, state: &mut DemoFormState) -> bool {
let is_edit_mode = state.mode == AppMode::Edit;
// Handle quit first
if (key == KeyCode::Char('q') && modifiers.contains(KeyModifiers::CONTROL)) ||
(key == KeyCode::Char('c') && modifiers.contains(KeyModifiers::CONTROL)) ||
key == KeyCode::F(10) {
return false; // Signal to quit
}
// Users directly map keys to actions - no configuration needed!
let action = match (state.mode, key, modifiers) {
// === READ-ONLY MODE KEYS ===
(AppMode::ReadOnly, KeyCode::Char('h'), _) => Some(CanvasAction::MoveLeft),
(AppMode::ReadOnly, KeyCode::Char('j'), _) => Some(CanvasAction::MoveDown),
(AppMode::ReadOnly, KeyCode::Char('k'), _) => Some(CanvasAction::MoveUp),
(AppMode::ReadOnly, KeyCode::Char('l'), _) => Some(CanvasAction::MoveRight),
(AppMode::ReadOnly, KeyCode::Char('w'), _) => Some(CanvasAction::MoveWordNext),
(AppMode::ReadOnly, KeyCode::Char('b'), _) => Some(CanvasAction::MoveWordPrev),
(AppMode::ReadOnly, KeyCode::Char('e'), _) => Some(CanvasAction::MoveWordEnd),
(AppMode::ReadOnly, KeyCode::Char('0'), _) => Some(CanvasAction::MoveLineStart),
(AppMode::ReadOnly, KeyCode::Char('$'), _) => Some(CanvasAction::MoveLineEnd),
(AppMode::ReadOnly, KeyCode::Tab, _) => Some(CanvasAction::NextField),
(AppMode::ReadOnly, KeyCode::BackTab, _) => Some(CanvasAction::PrevField),
// === EDIT MODE KEYS ===
(AppMode::Edit, KeyCode::Left, _) => Some(CanvasAction::MoveLeft),
(AppMode::Edit, KeyCode::Right, _) => Some(CanvasAction::MoveRight),
(AppMode::Edit, KeyCode::Up, _) => Some(CanvasAction::MoveUp),
(AppMode::Edit, KeyCode::Down, _) => Some(CanvasAction::MoveDown),
(AppMode::Edit, KeyCode::Home, _) => Some(CanvasAction::MoveLineStart),
(AppMode::Edit, KeyCode::End, _) => Some(CanvasAction::MoveLineEnd),
(AppMode::Edit, KeyCode::Backspace, _) => Some(CanvasAction::DeleteBackward),
(AppMode::Edit, KeyCode::Delete, _) => Some(CanvasAction::DeleteForward),
(AppMode::Edit, KeyCode::Tab, _) => Some(CanvasAction::NextField),
(AppMode::Edit, KeyCode::BackTab, _) => Some(CanvasAction::PrevField),
// Vim-style movement in edit mode (optional)
(AppMode::Edit, KeyCode::Char('h'), m) if m.contains(KeyModifiers::CONTROL) => Some(CanvasAction::MoveLeft),
(AppMode::Edit, KeyCode::Char('l'), m) if m.contains(KeyModifiers::CONTROL) => Some(CanvasAction::MoveRight),
// Word movement with Ctrl in edit mode
(AppMode::Edit, KeyCode::Left, m) if m.contains(KeyModifiers::CONTROL) => Some(CanvasAction::MoveWordPrev),
(AppMode::Edit, KeyCode::Right, m) if m.contains(KeyModifiers::CONTROL) => Some(CanvasAction::MoveWordNext),
// === MODE TRANSITIONS ===
(AppMode::ReadOnly, KeyCode::Char('i'), _) => Some(CanvasAction::Custom("enter_edit_mode".to_string())),
(AppMode::ReadOnly, KeyCode::Char('a'), _) => {
// 'a' moves to end of line then enters edit mode
if let Ok(_) = execute(CanvasAction::MoveLineEnd, state).await {
Some(CanvasAction::Custom("enter_edit_mode".to_string()))
} else {
None
}
},
(AppMode::ReadOnly, KeyCode::Char('v'), _) => Some(CanvasAction::Custom("enter_highlight_mode".to_string())),
(_, KeyCode::Esc, _) => Some(CanvasAction::Custom("enter_readonly_mode".to_string())),
// === CHARACTER INPUT IN EDIT MODE ===
(AppMode::Edit, KeyCode::Char(c), m) if !m.contains(KeyModifiers::CONTROL) && !m.contains(KeyModifiers::ALT) => {
Some(CanvasAction::InsertChar(c))
},
// === ARROW KEYS IN READ-ONLY MODE ===
(AppMode::ReadOnly, KeyCode::Left, _) => Some(CanvasAction::MoveLeft),
(AppMode::ReadOnly, KeyCode::Right, _) => Some(CanvasAction::MoveRight),
(AppMode::ReadOnly, KeyCode::Up, _) => Some(CanvasAction::MoveUp),
(AppMode::ReadOnly, KeyCode::Down, _) => Some(CanvasAction::MoveDown),
_ => None,
};
// Execute the action if we found one
if let Some(action) = action {
match execute(action.clone(), state).await {
Ok(result) => {
if result.is_success() {
// Mark as changed for editing actions
if is_edit_mode {
match action {
CanvasAction::InsertChar(_) | CanvasAction::DeleteBackward | CanvasAction::DeleteForward => {
state.set_has_unsaved_changes(true);
}
_ => {}
}
}
if let Some(msg) = result.message() {
state.debug_message = msg.to_string();
} else {
state.debug_message = format!("Executed: {}", action.description());
}
} else if let Some(msg) = result.message() {
state.debug_message = format!("Error: {}", msg);
}
}
Err(e) => {
state.debug_message = format!("Error executing action: {}", e);
}
}
} else {
state.debug_message = format!("Unhandled key: {:?} (mode: {:?})", key, state.mode);
}
true // Continue running
}
async fn run_app<B: Backend>(terminal: &mut Terminal<B>, mut state: DemoFormState) -> io::Result<()> {
let theme = DemoTheme;
loop {
terminal.draw(|f| ui(f, &state, &theme))?;
if let Event::Key(key) = event::read()? {
let should_continue = handle_key_press(key.code, key.modifiers, &mut state).await;
if !should_continue {
break;
}
}
}
Ok(())
}
fn ui(f: &mut Frame, state: &DemoFormState, theme: &DemoTheme) {
let chunks = Layout::default()
.direction(Direction::Vertical)
.constraints([
Constraint::Min(8),
Constraint::Length(4),
])
.split(f.area());
// Render the canvas form
render_canvas(
f,
chunks[0],
state,
theme,
state.mode == AppMode::Edit,
&state.highlight_state,
);
// Render status bar
let mode_text = match state.mode {
AppMode::Edit => "EDIT",
AppMode::ReadOnly => "NORMAL",
AppMode::Highlight => "VISUAL",
AppMode::General => "GENERAL",
AppMode::Command => "COMMAND",
};
let status_text = if state.has_changes {
format!("-- {} -- [Modified]", mode_text)
} else {
format!("-- {} --", mode_text)
};
let position_text = format!("Field: {}/{} | Cursor: {} | Actions: {}",
state.current_field + 1,
state.fields.len(),
state.cursor_pos,
CanvasAction::movement_actions().len() + CanvasAction::editing_actions().len());
let help_text = match state.mode {
AppMode::ReadOnly => "hjkl/arrows: Move | Tab/Shift+Tab: Fields | w/b/e: Words | 0/$: Line | i/a: Edit | v: Visual | F10: Quit",
AppMode::Edit => "Type to edit | Arrows/Ctrl+arrows: Move | Tab: Next field | Backspace/Delete: Delete | Home/End: Line | Esc: Normal | F10: Quit",
AppMode::Highlight => "hjkl/arrows: Select | w/b/e: Words | 0/$: Line | Esc: Normal | F10: Quit",
_ => "Esc: Normal | F10: Quit",
};
let status = Paragraph::new(vec![
Line::from(Span::styled(status_text, Style::default().fg(theme.accent()))),
Line::from(Span::styled(position_text, Style::default().fg(theme.fg()))),
Line::from(Span::styled(state.debug_message.clone(), Style::default().fg(theme.warning()))),
Line::from(Span::styled(help_text, Style::default().fg(theme.secondary()))),
])
.block(Block::default().borders(Borders::ALL).title("Status"));
f.render_widget(status, chunks[1]);
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
enable_raw_mode()?;
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
let state = DemoFormState::new();
let res = run_app(&mut terminal, state).await;
disable_raw_mode()?;
execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
terminal.show_cursor()?;
if let Err(err) = res {
println!("{:?}", err);
}
Ok(())
}

156
canvas/examples/full_canvas_demo.rs
View File

@@ -3,6 +3,7 @@
use std::io;
use crossterm::{
cursor::SetCursorStyle,
event::{
self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyModifiers,
},
@@ -28,12 +29,26 @@ use canvas::{
DataProvider, FormEditor,
};
/// Update cursor style based on current AppMode
fn update_cursor_for_mode(mode: AppMode) -> io::Result<()> {
let style = match mode {
AppMode::Edit => SetCursorStyle::SteadyBar, // Thin line for insert mode
AppMode::ReadOnly => SetCursorStyle::SteadyBlock, // Block for normal mode
AppMode::Highlight => SetCursorStyle::BlinkingBlock, // Blinking block for visual mode
AppMode::General => SetCursorStyle::SteadyBlock, // Block for general mode
AppMode::Command => SetCursorStyle::SteadyUnderScore, // Underscore for command mode
};
execute!(io::stdout(), style)
}
// Enhanced FormEditor that adds visual mode and status tracking
struct EnhancedFormEditor<D: DataProvider> {
editor: FormEditor<D>,
highlight_state: HighlightState,
has_unsaved_changes: bool,
debug_message: String,
command_buffer: String, // For multi-key vim commands like "gg"
}
impl<D: DataProvider> EnhancedFormEditor<D> {
@@ -43,11 +58,30 @@ impl<D: DataProvider> EnhancedFormEditor<D> {
highlight_state: HighlightState::Off,
has_unsaved_changes: false,
debug_message: "Full Canvas Demo - All features enabled".to_string(),
command_buffer: String::new(),
}
}
// === COMMAND BUFFER HANDLING ===
fn clear_command_buffer(&mut self) {
self.command_buffer.clear();
}
fn add_to_command_buffer(&mut self, ch: char) {
self.command_buffer.push(ch);
}
fn get_command_buffer(&self) -> &str {
&self.command_buffer
}
fn has_pending_command(&self) -> bool {
!self.command_buffer.is_empty()
}
// === VISUAL/HIGHLIGHT MODE SUPPORT ===
fn enter_visual_mode(&mut self) {
if ModeManager::can_enter_highlight_mode(self.editor.mode()) {
self.editor.set_mode(AppMode::Highlight);
@@ -100,7 +134,7 @@ impl<D: DataProvider> EnhancedFormEditor<D> {
}
// === ENHANCED MOVEMENT WITH VISUAL UPDATES ===
fn move_left(&mut self) {
self.editor.move_left();
self.update_visual_selection();
@@ -172,7 +206,7 @@ impl<D: DataProvider> EnhancedFormEditor<D> {
}
// === DELETE OPERATIONS ===
fn delete_backward(&mut self) -> anyhow::Result<()> {
let result = self.editor.delete_backward();
if result.is_ok() {
@@ -192,7 +226,7 @@ impl<D: DataProvider> EnhancedFormEditor<D> {
}
// === MODE TRANSITIONS ===
fn enter_edit_mode(&mut self) {
self.editor.enter_edit_mode();
self.debug_message = "-- INSERT --".to_string();
@@ -217,23 +251,23 @@ impl<D: DataProvider> EnhancedFormEditor<D> {
fn current_field(&self) -> usize {
self.editor.current_field()
}
fn cursor_position(&self) -> usize {
self.editor.cursor_position()
}
fn mode(&self) -> AppMode {
self.editor.mode()
}
fn current_text(&self) -> &str {
self.editor.current_text()
}
fn data_provider(&self) -> &D {
self.editor.data_provider()
}
fn ui_state(&self) -> &canvas::EditorState {
self.editor.ui_state()
}
@@ -246,7 +280,7 @@ impl<D: DataProvider> EnhancedFormEditor<D> {
}
// === STATUS AND DEBUG ===
fn set_debug_message(&mut self, msg: String) {
self.debug_message = msg;
}
@@ -298,23 +332,23 @@ impl DataProvider for FullDemoData {
fn field_count(&self) -> usize {
self.fields.len()
}
fn field_name(&self, index: usize) -> &str {
&self.fields[index].0
}
fn field_value(&self, index: usize) -> &str {
&self.fields[index].1
}
fn set_field_value(&mut self, index: usize, value: String) {
self.fields[index].1 = value;
}
fn supports_autocomplete(&self, _field_index: usize) -> bool {
false
}
fn display_value(&self, _index: usize) -> Option<&str> {
None
}
@@ -326,7 +360,7 @@ fn handle_key_press(
modifiers: KeyModifiers,
editor: &mut EnhancedFormEditor<FullDemoData>,
) -> anyhow::Result<bool> {
let mode = editor.mode();
let old_mode = editor.mode(); // Store mode before processing
// Quit handling
if (key == KeyCode::Char('q') && modifiers.contains(KeyModifiers::CONTROL))
@@ -336,34 +370,41 @@ fn handle_key_press(
return Ok(false);
}
match (mode, key, modifiers) {
match (old_mode, key, modifiers) {
// === MODE TRANSITIONS ===
(AppMode::ReadOnly, KeyCode::Char('i'), _) => {
editor.enter_edit_mode();
editor.clear_command_buffer();
}
(AppMode::ReadOnly, KeyCode::Char('a'), _) => {
editor.move_right(); // Move after current character
editor.enter_edit_mode();
editor.set_debug_message("-- INSERT -- (append)".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly, KeyCode::Char('A'), _) => {
editor.move_line_end();
editor.enter_edit_mode();
editor.set_debug_message("-- INSERT -- (end of line)".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly, KeyCode::Char('o'), _) => {
editor.move_line_end();
editor.enter_edit_mode();
editor.set_debug_message("-- INSERT -- (open line)".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly, KeyCode::Char('v'), _) => {
editor.enter_visual_mode();
editor.clear_command_buffer();
}
(AppMode::ReadOnly, KeyCode::Char('V'), _) => {
editor.enter_visual_line_mode();
editor.clear_command_buffer();
}
(_, KeyCode::Esc, _) => {
editor.exit_edit_mode();
editor.clear_command_buffer();
}
// === MOVEMENT: VIM-STYLE NAVIGATION ===
@@ -373,39 +414,47 @@ fn handle_key_press(
| (AppMode::ReadOnly | AppMode::Highlight, KeyCode::Left, _) => {
editor.move_left();
editor.set_debug_message("← left".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('l'), _)
| (AppMode::ReadOnly | AppMode::Highlight, KeyCode::Right, _) => {
editor.move_right();
editor.set_debug_message("→ right".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('j'), _)
| (AppMode::ReadOnly | AppMode::Highlight, KeyCode::Down, _) => {
editor.move_down();
editor.set_debug_message("↓ next field".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('k'), _)
| (AppMode::ReadOnly | AppMode::Highlight, KeyCode::Up, _) => {
editor.move_up();
editor.set_debug_message("↑ previous field".to_string());
editor.clear_command_buffer();
}
// Word movement - Full vim word navigation
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('w'), _) => {
editor.move_word_next();
editor.set_debug_message("w: next word start".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('b'), _) => {
editor.move_word_prev();
editor.set_debug_message("b: previous word start".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('e'), _) => {
editor.move_word_end();
editor.set_debug_message("e: word end".to_string());
editor.clear_command_buffer();
}
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('W'), _) => {
editor.move_word_end_prev();
editor.set_debug_message("W: previous word end".to_string());
editor.clear_command_buffer();
}
// Line movement
@@ -422,15 +471,33 @@ fn handle_key_press(
// Field/document movement
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('g'), _) => {
editor.move_first_line();
editor.set_debug_message("gg: first field".to_string());
if editor.get_command_buffer() == "g" {
// Second 'g' - execute "gg" command
editor.move_first_line();
editor.set_debug_message("gg: first field".to_string());
editor.clear_command_buffer();
} else {
// First 'g' - start command buffer
editor.clear_command_buffer();
editor.add_to_command_buffer('g');
editor.set_debug_message("g".to_string());
}
}
(AppMode::ReadOnly | AppMode::Highlight, KeyCode::Char('G'), _) => {
editor.move_last_line();
editor.set_debug_message("G: last field".to_string());
editor.clear_command_buffer();
}
// === EDIT MODE MOVEMENT ===
(AppMode::Edit, KeyCode::Left, m) if m.contains(KeyModifiers::CONTROL) => {
editor.move_word_prev();
editor.set_debug_message("Ctrl+← word back".to_string());
}
(AppMode::Edit, KeyCode::Right, m) if m.contains(KeyModifiers::CONTROL) => {
editor.move_word_next();
editor.set_debug_message("Ctrl+→ word forward".to_string());
}
(AppMode::Edit, KeyCode::Left, _) => {
editor.move_left();
}
@@ -450,16 +517,6 @@ fn handle_key_press(
editor.move_line_end();
}
// Word movement in edit mode with Ctrl
(AppMode::Edit, KeyCode::Left, m) if m.contains(KeyModifiers::CONTROL) => {
editor.move_word_prev();
editor.set_debug_message("Ctrl+← word back".to_string());
}
(AppMode::Edit, KeyCode::Right, m) if m.contains(KeyModifiers::CONTROL) => {
editor.move_word_next();
editor.set_debug_message("Ctrl+→ word forward".to_string());
}
// === DELETE OPERATIONS ===
(AppMode::Edit, KeyCode::Backspace, _) => {
editor.delete_backward()?;
@@ -496,7 +553,7 @@ fn handle_key_press(
// === DEBUG/INFO COMMANDS ===
(AppMode::ReadOnly, KeyCode::Char('?'), _) => {
editor.set_debug_message(format!(
"Field {}/{}, Pos {}, Mode: {:?}",
"Field {}/{}, Pos {}, Mode: {:?}",
editor.current_field() + 1,
editor.data_provider().field_count(),
editor.cursor_position(),
@@ -505,13 +562,25 @@ fn handle_key_press(
}
_ => {
editor.set_debug_message(format!(
"Unhandled: {:?} + {:?} in {:?} mode",
key, modifiers, mode
));
// If we have a pending command and this key doesn't complete it, clear the buffer
if editor.has_pending_command() {
editor.clear_command_buffer();
editor.set_debug_message("Invalid command sequence".to_string());
} else {
editor.set_debug_message(format!(
"Unhandled: {:?} + {:?} in {:?} mode",
key, modifiers, old_mode
));
}
}
}
// Update cursor if mode changed
let new_mode = editor.mode();
if old_mode != new_mode {
update_cursor_for_mode(new_mode)?;
}
Ok(true)
}
@@ -579,7 +648,9 @@ fn render_status_and_help(
_ => "NORMAL",
};
let status_text = if editor.has_unsaved_changes() {
let status_text = if editor.has_pending_command() {
format!("-- {} -- {} [{}]", mode_text, editor.debug_message(), editor.get_command_buffer())
} else if editor.has_unsaved_changes() {
format!("-- {} -- [Modified] {}", mode_text, editor.debug_message())
} else {
format!("-- {} -- {}", mode_text, editor.debug_message())
@@ -593,7 +664,14 @@ fn render_status_and_help(
// Help text
let help_text = match editor.mode() {
AppMode::ReadOnly => {
"Normal: hjkl/arrows=move, w/b/e=words, 0/$=line, gg/G=first/last, i/a/A=insert, v/V=visual, x/X=delete, ?=info"
if editor.has_pending_command() {
match editor.get_command_buffer() {
"g" => "Press 'g' again for first field, or any other key to cancel",
_ => "Pending command... (Esc to cancel)"
}
} else {
"Normal: hjkl/arrows=move, w/b/e=words, 0/$=line, gg/G=first/last, i/a/A=insert, v/V=visual, x/X=delete, ?=info"
}
}
AppMode::Edit => {
"Insert: arrows=move, Ctrl+arrows=words, Backspace/Del=delete, Esc=normal, Tab/Shift+Tab=fields"
@@ -621,9 +699,15 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
let data = FullDemoData::new();
let mut editor = EnhancedFormEditor::new(data);
editor.set_mode(AppMode::ReadOnly); // Start in normal mode
// Set initial cursor style
update_cursor_for_mode(editor.mode())?;
let res = run_app(&mut terminal, editor);
// Reset cursor style on exit
execute!(io::stdout(), SetCursorStyle::DefaultUserShape)?;
disable_raw_mode()?;
execute!(
terminal.backend_mut(),

45
canvas/src/canvas/cursor.rs Normal file
View File

@@ -0,0 +1,45 @@
// src/canvas/cursor.rs
//! Cursor style management for different canvas modes
#[cfg(feature = "cursor-style")]
use crossterm::{cursor::SetCursorStyle, execute};
#[cfg(feature = "cursor-style")]
use std::io;
use crate::canvas::modes::AppMode;
/// Manages cursor styles based on canvas modes
pub struct CursorManager;
impl CursorManager {
/// Update cursor style based on current mode
#[cfg(feature = "cursor-style")]
pub fn update_for_mode(mode: AppMode) -> io::Result<()> {
let style = match mode {
AppMode::Edit => SetCursorStyle::SteadyBar, // Thin line for insert
AppMode::ReadOnly => SetCursorStyle::SteadyBlock, // Block for normal
AppMode::Highlight => SetCursorStyle::BlinkingBlock, // Blinking for visual
AppMode::General => SetCursorStyle::SteadyBlock, // Block for general
AppMode::Command => SetCursorStyle::SteadyUnderScore, // Underscore for command
};
execute!(io::stdout(), style)
}
/// No-op when cursor-style feature is disabled
#[cfg(not(feature = "cursor-style"))]
pub fn update_for_mode(_mode: AppMode) -> io::Result<()> {
Ok(())
}
/// Reset cursor to default on cleanup
#[cfg(feature = "cursor-style")]
pub fn reset() -> io::Result<()> {
execute!(io::stdout(), SetCursorStyle::DefaultUserShape)
}
#[cfg(not(feature = "cursor-style"))]
pub fn reset() -> io::Result<()> {
Ok(())
}
}

7
canvas/src/canvas/mod.rs
View File

@@ -6,9 +6,14 @@ pub mod modes;
#[cfg(feature = "gui")]
pub mod gui;
#[cfg(feature = "gui")]
pub mod theme;
#[cfg(feature = "cursor-style")]
pub mod cursor;
// Keep these exports for current functionality
pub use modes::{AppMode, ModeManager, HighlightState};
#[cfg(feature = "cursor-style")]
pub use cursor::CursorManager;

37
canvas/src/canvas/modes/manager.rs
View File

@@ -1,6 +1,8 @@
// src/modes/handlers/mode_manager.rs
// canvas/src/modes/manager.rs
#[cfg(feature = "cursor-style")]
use crate::canvas::CursorManager;
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum AppMode {
@@ -30,4 +32,39 @@ impl ModeManager {
pub fn can_enter_highlight_mode(current_mode: AppMode) -> bool {
matches!(current_mode, AppMode::ReadOnly)
}
/// Transition to new mode with automatic cursor update (when cursor-style feature enabled)
pub fn transition_to_mode(current_mode: AppMode, new_mode: AppMode) -> std::io::Result<AppMode> {
if current_mode != new_mode {
#[cfg(feature = "cursor-style")]
{
let _ = CursorManager::update_for_mode(new_mode);
}
}
Ok(new_mode)
}
/// Enter highlight mode with cursor styling
pub fn enter_highlight_mode_with_cursor(current_mode: AppMode) -> std::io::Result<bool> {
if Self::can_enter_highlight_mode(current_mode) {
#[cfg(feature = "cursor-style")]
{
let _ = CursorManager::update_for_mode(AppMode::Highlight);
}
Ok(true)
} else {
Ok(false)
}
}
/// Exit highlight mode with cursor styling
pub fn exit_highlight_mode_with_cursor() -> std::io::Result<AppMode> {
let new_mode = AppMode::ReadOnly;
#[cfg(feature = "cursor-style")]
{
let _ = CursorManager::update_for_mode(new_mode);
}
Ok(new_mode)
}
}

83
canvas/src/editor.rs
View File

@@ -1,6 +1,9 @@
// src/editor.rs
//! Main API for the canvas library - FormEditor with library-owned state
#[cfg(feature = "cursor-style")]
use crate::canvas::CursorManager;
use anyhow::Result;
use crate::canvas::state::EditorState;
use crate::data_provider::{DataProvider, AutocompleteProvider, SuggestionItem};
@@ -145,12 +148,21 @@ impl<D: DataProvider> FormEditor<D> {
/// Change mode (for vim compatibility)
pub fn set_mode(&mut self, mode: AppMode) {
#[cfg(feature = "cursor-style")]
let old_mode = self.ui_state.current_mode;
self.ui_state.current_mode = mode;
// Clear autocomplete when changing modes
if mode != AppMode::Edit {
self.ui_state.deactivate_autocomplete();
}
// Update cursor style if mode changed and cursor-style feature is enabled
#[cfg(feature = "cursor-style")]
if old_mode != mode {
let _ = crate::canvas::CursorManager::update_for_mode(mode);
}
}
// ===================================================================
@@ -457,4 +469,75 @@ impl<D: DataProvider> FormEditor<D> {
self.ui_state.cursor_pos = safe_pos;
}
/// Set the value of the current field
pub fn set_current_field_value(&mut self, value: String) {
let field_index = self.ui_state.current_field;
self.data_provider.set_field_value(field_index, value);
// Reset cursor to start of field
self.ui_state.cursor_pos = 0;
self.ui_state.ideal_cursor_column = 0;
}
/// Set the value of a specific field by index
pub fn set_field_value(&mut self, field_index: usize, value: String) {
if field_index < self.data_provider.field_count() {
self.data_provider.set_field_value(field_index, value);
// If we're modifying the current field, reset cursor
if field_index == self.ui_state.current_field {
self.ui_state.cursor_pos = 0;
self.ui_state.ideal_cursor_column = 0;
}
}
}
/// Clear the current field (set to empty string)
pub fn clear_current_field(&mut self) {
self.set_current_field_value(String::new());
}
/// Get mutable access to data provider (for advanced operations)
pub fn data_provider_mut(&mut self) -> &mut D {
&mut self.data_provider
}
/// Set cursor to exact position (for vim-style movements like f, F, t, T)
pub fn set_cursor_position(&mut self, position: usize) {
let current_text = self.current_text();
let is_edit_mode = self.ui_state.current_mode == AppMode::Edit;
// Clamp to valid bounds for current mode
let max_pos = if is_edit_mode {
current_text.len() // Edit mode: can go past end
} else {
current_text.len().saturating_sub(1).max(0) // Read-only: stay within text
};
let clamped_pos = position.min(max_pos);
// Update cursor position directly
self.ui_state.cursor_pos = clamped_pos;
self.ui_state.ideal_cursor_column = clamped_pos;
}
/// Cleanup cursor style (call this when shutting down)
pub fn cleanup_cursor(&self) -> std::io::Result<()> {
#[cfg(feature = "cursor-style")]
{
crate::canvas::CursorManager::reset()
}
#[cfg(not(feature = "cursor-style"))]
{
Ok(())
}
}
}
// Add Drop implementation for automatic cleanup
impl<D: DataProvider> Drop for FormEditor<D> {
fn drop(&mut self) {
// Reset cursor to default when FormEditor is dropped
let _ = self.cleanup_cursor();
}
}

3
canvas/src/lib.rs
View File

@@ -8,6 +8,9 @@ pub mod data_provider;
#[cfg(feature = "autocomplete")]
pub mod autocomplete;
#[cfg(feature = "cursor-style")]
pub use canvas::CursorManager;
// ===================================================================
// NEW API: Library-owned state pattern
// ===================================================================