Data Table

A comprehensive data table component designed for handling large datasets with high performance. Features virtual scrolling, column configuration, sorting, filtering, row/column/cell selection, and custom cell rendering. Perfect for displaying tabular data with thousands of rows while maintaining smooth performance.

#Key Features

• Multiple Selection Modes: Row, column, and individual cell selection
• Virtual Scrolling: Handle thousands of rows with smooth performance
• Column Management: Resizable, movable, and fixed columns
• Sorting: Built-in column sorting support
• Keyboard Navigation: Full keyboard support for all selection modes
• Custom Cell Rendering: Render any content in table cells
• Context Menus: Right-click support for rows and cells
• Infinite Loading: Load more data as user scrolls
• Events: Comprehensive event system for user interactions

#Import

use gpui_kit::component::table::{
    DataTable, TableState, TableDelegate,
    Column, ColumnSort, ColumnFixed,
    TableEvent
};

#Usage

#Basic Table

To create a table, you need to implement the TableDelegate trait and provide column definitions, and use TableState to manage the table state.

use std::ops::Range;
use gpui_kit::{App, Context, Window, IntoElement};
use gpui_kit::component::table::{DataTable, TableDelegate, Column, ColumnSort};

struct MyData {
    id: usize,
    name: String,
    age: u32,
    email: String,
}

struct MyTableDelegate {
    data: Vec<MyData>,
    columns: Vec<Column>,
}

impl MyTableDelegate {
    fn new() -> Self {
        Self {
            data: vec![
                MyData { id: 1, name: "John".to_string(), age: 30, email: "john@example.com".to_string() },
                MyData { id: 2, name: "Jane".to_string(), age: 25, email: "jane@example.com".to_string() },
            ],
            columns: vec![
                Column::new("id", "ID").width(60.),
                Column::new("name", "Name").width(150.).sortable(),
                Column::new("age", "Age").width(80.).sortable(),
                Column::new("email", "Email").width(200.),
            ],
        }
    }
}

impl TableDelegate for MyTableDelegate {
    fn columns_count(&self, _: &App) -> usize {
        self.columns.len()
    }

    fn rows_count(&self, _: &App) -> usize {
        self.data.len()
    }

    fn column(&self, col_ix: usize, _: &App) -> Column {
        self.columns[col_ix].clone()
    }

    fn render_td(&mut self, row_ix: usize, col_ix: usize, _: &mut Window, _: &mut Context<TableState<Self>>) -> impl IntoElement {
        let row = &self.data[row_ix];
        let col = &self.columns[col_ix];

        match col.key.as_ref() {
            "id" => row.id.to_string(),
            "name" => row.name.clone(),
            "age" => row.age.to_string(),
            "email" => row.email.clone(),
            _ => "".to_string(),
        }
    }
}

// Create the table
let delegate = MyTableDelegate::new();
let state = cx.new(|cx| TableState::new(delegate, window, cx));

#Column Configuration

Columns provide extensive configuration options:

// Basic column
Column::new("id", "ID")

// Sortable column
Column::new("name", "Name")
    .sortable()
    .width(150.)

// Right-aligned column
Column::new("price", "Price")
    .text_right()
    .sortable()

// Fixed column (pinned to left)
Column::new("actions", "Actions")
    .fixed(ColumnFixed::Left)
    .resizable(false)
    .movable(false)

// Column with custom padding
Column::new("description", "Description")
    .width(200.)
    .paddings(px(8.))

// Non-resizable column
Column::new("status", "Status")
    .width(100.)
    .resizable(false)

// Custom sort orders
Column::new("created", "Created")
    .ascending() // Default ascending
// or
Column::new("modified", "Modified")
    .descending() // Default descending

#Virtual Scrolling for Large Datasets

The table automatically handles virtual scrolling for optimal performance:

struct LargeDataDelegate {
    data: Vec<Record>, // Could be 10,000+ items
    columns: Vec<Column>,
}

impl TableDelegate for LargeDataDelegate {
    fn rows_count(&self, _: &App) -> usize {
        self.data.len() // No performance impact regardless of size
    }

    // Only visible rows are rendered
    fn render_td(&mut self, row_ix: usize, col_ix: usize, _: &mut Window, _: &mut Context<TableState<Self>>) -> impl IntoElement {
        // This is only called for visible rows
        // Efficiently render cell content
        let row = &self.data[row_ix];
        format_cell_data(row, col_ix)
    }

    // Track visible range for optimizations
    fn visible_rows_changed(&mut self, visible_range: Range<usize>, _: &mut Window, _: &mut Context<TableState<Self>>) {
        // Only update data for visible rows if needed
        // This is called when user scrolls
    }
}

#Sorting Implementation

Implement sorting in your delegate:

impl TableDelegate for MyTableDelegate {
    fn perform_sort(&mut self, col_ix: usize, sort: ColumnSort, _: &mut Window, _: &mut Context<TableState<Self>>) {
        let col = &self.columns[col_ix];

        match col.key.as_ref() {
            "name" => {
                match sort {
                    ColumnSort::Ascending => self.data.sort_by(|a, b| a.name.cmp(&b.name)),
                    ColumnSort::Descending => self.data.sort_by(|a, b| b.name.cmp(&a.name)),
                    ColumnSort::Default => {
                        // Reset to original order or default sort
                        self.data.sort_by(|a, b| a.id.cmp(&b.id));
                    }
                }
            }
            "age" => {
                match sort {
                    ColumnSort::Ascending => self.data.sort_by(|a, b| a.age.cmp(&b.age)),
                    ColumnSort::Descending => self.data.sort_by(|a, b| b.age.cmp(&a.age)),
                    ColumnSort::Default => self.data.sort_by(|a, b| a.id.cmp(&b.id)),
                }
            }
            _ => {}
        }
    }
}

#ContextMenu

impl TableDelegate for MyTableDelegate {
    // Context menu for right-click
    fn context_menu(&mut self, row_ix: usize, menu: PopupMenu, _: &mut Window, _: &mut Context<TableState<Self>>) -> PopupMenu {
        let row = &self.data[row_ix];
        menu.menu(format!("Edit {}", row.name), Box::new(EditRowAction(row_ix)))
            .menu("Delete", Box::new(DeleteRowAction(row_ix)))
            .separator()
            .menu("Duplicate", Box::new(DuplicateRowAction(row_ix)))
    }
}

#Cell Rendering

Create rich cell content with custom rendering:

impl TableDelegate for MyTableDelegate {
    fn render_td(&mut self, row_ix: usize, col_ix: usize, _: &mut Window, cx: &mut Context<TableState<Self>>) -> impl IntoElement {
        let row = &self.data[row_ix];
        let col = &self.columns[col_ix];

        match col.key.as_ref() {
            "status" => {
                // Custom status badge
                let (color, text) = match row.status {
                    Status::Active => (cx.theme().green, "Active"),
                    Status::Inactive => (cx.theme().red, "Inactive"),
                    Status::Pending => (cx.theme().yellow, "Pending"),
                };

                div()
                    .px_2()
                    .py_1()
                    .rounded(px(4.))
                    .bg(color.opacity(0.1))
                    .text_color(color)
                    .child(text)
            }
            "progress" => {
                // Progress bar
                div()
                    .w_full()
                    .h(px(8.))
                    .bg(cx.theme().muted)
                    .rounded(px(4.))
                    .child(
                        div()
                            .h_full()
                            .w(percentage(row.progress))
                            .bg(cx.theme().primary)
                            .rounded(px(4.))
                    )
            }
            "actions" => {
                // Action buttons
                h_flex()
                    .gap_1()
                    .child(Button::new(format!("edit-{}", row_ix)).text().icon(IconName::Edit))
                    .child(Button::new(format!("delete-{}", row_ix)).text().icon(IconName::Trash))
            }
            "avatar" => {
                // User avatar with image
                h_flex()
                    .items_center()
                    .gap_2()
                    .child(
                        div()
                            .w(px(32.))
                            .h(px(32.))
                            .rounded_full()
                            .bg(cx.theme().accent)
                            .flex()
                            .items_center()
                            .justify_center()
                            .child(row.name.chars().next().unwrap_or('?').to_string())
                    )
                    .child(row.name.clone())
            }
            _ => row.get_field_value(col.key.as_ref()).into_any_element(),
        }
    }
}

#Selection Modes

The table supports three distinct selection modes:

// Row selection mode (default)
let state = cx.new(|cx| {
    TableState::new(delegate, window, cx)
        .row_selectable(true)  // Enable row selection
        .col_selectable(false)
        .cell_selectable(false)
});

// Column selection mode
let state = cx.new(|cx| {
    TableState::new(delegate, window, cx)
        .row_selectable(false)
        .col_selectable(true)  // Enable column selection
        .cell_selectable(false)
});

// Cell selection mode
let state = cx.new(|cx| {
    TableState::new(delegate, window, cx)
        .row_selectable(true)   // Keep row selection for row selector column
        .col_selectable(false)
        .cell_selectable(true)  // Enable cell selection
});

#Column Resizing and Moving

Enable dynamic column management:

// Configure table features
let state = cx.new(|cx| {
    TableState::new(delegate, window, cx)
        .col_resizable(true)  // Allow column resizing
        .col_movable(true)    // Allow column reordering
        .sortable(true)       // Enable sorting
        .col_selectable(true) // Allow column selection
        .row_selectable(true) // Allow row selection
});

// Listen for column changes
cx.subscribe_in(&state, window, |view, table, event, _, cx| {
    match event {
        TableEvent::ColumnWidthsChanged(widths) => {
            // Save column widths to user preferences
            save_column_widths(widths);
        }
        TableEvent::MoveColumn(from_ix, to_ix) => {
            // Save column order
            save_column_order(from_ix, to_ix);
        }
        _ => {}
    }
}).detach();

#Infinite Loading / Pagination

Implement loading more data as user scrolls:

impl TableDelegate for MyTableDelegate {
    fn has_more(&self, _: &App) -> bool {
        self.has_more_data
    }

    fn load_more_threshold(&self) -> usize {
        50 // Load more when 50 rows from bottom
    }

    fn load_more(&mut self, _: &mut Window, cx: &mut Context<TableState<Self>>) {
        if self.loading {
            return; // Prevent multiple loads
        }

        self.loading = true;

        // Spawn async task to load data
        cx.spawn(async move |view, cx| {
            let new_data = fetch_more_data().await;

            cx.update(|cx| {
                view.update(cx, |view, _| {
                    let delegate = view.table.delegate_mut();
                    delegate.data.extend(new_data);
                    delegate.loading = false;
                    delegate.has_more_data = !new_data.is_empty();
                });
            })
        }).detach();
    }

    fn loading(&self, _: &App) -> bool {
        self.loading
    }
}

#Table Styling

Customize table appearance. DataTable implements Sizable: use preset sizes such as .small() and .large() for standard density, or pass a custom pixel size to set a uniform header and body row height.

use gpui_kit::px;
use gpui_kit::component::Sizable as _;

let state = cx.new(|cx| {
    TableState::new(delegate, window, cx)
});

// In render
DataTable::new(&state)
    .with_size(px(48.))             // Custom uniform row height
    .stripe(true)                   // Alternating row colors
    .bordered(true)                 // Border around table
    .scrollbar_visible(true, true)  // Vertical, horizontal scrollbars

#Examples

#Financial Data Table

struct StockData {
    symbol: String,
    price: f64,
    change: f64,
    change_percent: f64,
    volume: u64,
}

impl TableDelegate for StockTableDelegate {
    fn render_td(&mut self, row_ix: usize, col_ix: usize, _: &mut Window, cx: &mut Context<TableState<Self>>) -> impl IntoElement {
        let stock = &self.stocks[row_ix];
        let col = &self.columns[col_ix];

        match col.key.as_ref() {
            "symbol" => div().font_weight(FontWeight::BOLD).child(stock.symbol.clone()),
            "price" => div().text_right().child(format!("${:.2}", stock.price)),
            "change" => {
                let color = if stock.change >= 0.0 { cx.theme().green } else { cx.theme().red };
                div()
                    .text_right()
                    .text_color(color)
                    .child(format!("{:+.2}", stock.change))
            }
            "change_percent" => {
                let color = if stock.change_percent >= 0.0 { cx.theme().green } else { cx.theme().red };
                div()
                    .text_right()
                    .text_color(color)
                    .child(format!("{:+.1}%", stock.change_percent * 100.0))
            }
            "volume" => div().text_right().child(format!("{:,}", stock.volume)),
            _ => div(),
        }
    }
}

#User Management Table

struct UserTableDelegate {
    users: Vec<User>,
    columns: Vec<Column>,
}

impl UserTableDelegate {
    fn new() -> Self {
        Self {
            users: Vec::new(),
            columns: vec![
                Column::new("avatar", "").width(50.).resizable(false).movable(false),
                Column::new("name", "Name").width(150.).sortable().fixed_left(),
                Column::new("email", "Email").width(200.).sortable(),
                Column::new("role", "Role").width(100.).sortable(),
                Column::new("status", "Status").width(100.),
                Column::new("last_login", "Last Login").width(120.).sortable(),
                Column::new("actions", "Actions").width(100.).resizable(false),
            ],
        }
    }
}

#Cell Selection

Enable individual cell selection for more granular control:

let state = cx.new(|cx| {
    TableState::new(delegate, window, cx)
        .cell_selectable(true)  // Enable cell selection
        .row_selectable(true)   // Also allow row selection
});

// Listen for cell events
cx.subscribe_in(&state, window, |view, table, event, _, cx| {
    match event {
        TableEvent::SelectCell(row_ix, col_ix) => {
            println!("Selected cell: ({}, {})", row_ix, col_ix);
        }
        TableEvent::DoubleClickedCell(row_ix, col_ix) => {
            // Open editor or detail view
            open_cell_editor(row_ix, col_ix);
        }
        TableEvent::RightClickedCell(row_ix, col_ix) => {
            // Show cell-specific context menu
            show_cell_context_menu(row_ix, col_ix);
        }
        TableEvent::ClearSelection => {
            println!("Selection cleared");
        }
        _ => {}
    }
}).detach();

#Cell Selection Features

When cell selection is enabled:

• Click to select: Click on any cell to select it
• Row selector column: A dedicated column appears on the left for selecting entire rows
• Keyboard navigation: Arrow keys navigate between cells (not rows/columns)
• Double-click support: Trigger actions like editing by double-clicking cells
• Right-click support: Show context menus specific to cell content
• Visual feedback: Selected cells show highlight with border

#Programmatic Cell Selection

// Get the currently selected cell
if let Some((row_ix, col_ix)) = state.read(cx).selected_cell() {
    println!("Current cell: ({}, {})", row_ix, col_ix);
}

// Select a specific cell programmatically
state.update(cx, |state, cx| {
    state.set_selected_cell(5, 3, cx);  // Select row 5, column 3
});

// Clear all selections
state.update(cx, |state, cx| {
    state.clear_selection(cx);
});

#Non-selectable Columns

Prevent specific columns from being selected (useful for action columns):

Column::new("actions", "Actions")
    .width(100.)
    .selectable(false)  // This column's cells cannot be selected
    .resizable(false)

#Cell Selection with Custom Rendering

impl TableDelegate for MyTableDelegate {
    fn render_td(&mut self, row_ix: usize, col_ix: usize, _: &mut Window, cx: &mut Context<TableState<Self>>) -> impl IntoElement {
        let row = &self.data[row_ix];
        let col = &self.columns[col_ix];

        // Render different content based on whether cell is selected
        let is_selected = cx.entity().read(cx).selected_cell() == Some((row_ix, col_ix));

        match col.key.as_ref() {
            "editable_field" => {
                if is_selected {
                    // Show input when selected
                    Input::new(format!("cell-{}-{}", row_ix, col_ix))
                        .value(row.field_value.clone())
                        .into_any_element()
                } else {
                    // Show plain text when not selected
                    div().child(row.field_value.clone()).into_any_element()
                }
            }
            _ => div().child(row.get_value(col.key.as_ref())).into_any_element()
        }
    }
}

#Keyboard Shortcuts

#Row Selection Mode (default)

• ↑/↓ - Navigate rows
• ←/→ - Navigate columns
• Home - Jump to first row/column
• End - Jump to last row/column
• PageUp/PageDown - Navigate by page
• Escape - Clear selection

#Cell Selection Mode

• ↑/↓ - Navigate up/down within current column
• ←/→ - Navigate left/right within current row
• Tab - Move to next cell (right, then next row)
• Shift+Tab - Move to previous cell
• Home - Jump to first cell in current row
• End - Jump to last cell in current row
• PageUp/PageDown - Navigate by page within current column
• Escape - Clear selection

#API Reference

#Core Types

• DataTable - The data table component
• TableState - Table state management
• TableDelegate - Trait for implementing table data source
• Column - Column configuration
• TableEvent - Table events (selection, clicks, etc.)

#Column Types

• ColumnSort - Column sort direction enum
• ColumnFixed - Column fixed position enum

#Methods

#TableState

• new(delegate, window, cx) - Create a new table state
• cell_selectable(bool) - Enable/disable cell selection
• row_selectable(bool) - Enable/disable row selection
• col_selectable(bool) - Enable/disable column selection
• selected_cell() - Get currently selected cell
• set_selected_cell(row_ix, col_ix, cx) - Select a specific cell
• selected_row() - Get currently selected row
• selected_col() - Get currently selected column
• clear_selection(cx) - Clear all selections
• scroll_to_row(row_ix, cx) - Scroll to specific row
• scroll_to_col(col_ix, cx) - Scroll to specific column

#Column

• new(key, name) - Create a new column
• width(pixels) - Set column width
• sortable() - Make column sortable
• ascending() - Set default sort to ascending
• descending() - Set default sort to descending
• text_right() - Right-align column text
• text_center() - Center-align column text
• fixed(ColumnFixed) - Pin column to left
• resizable(bool) - Enable/disable column resizing
• movable(bool) - Enable/disable column moving
• selectable(bool) - Enable/disable column/cell selection
• paddings(edges) - Set custom padding
• min_width(pixels) - Set minimum width
• max_width(pixels) - Set maximum width

#Events

• SelectRow(usize) - Row selected
• DoubleClickedRow(usize) - Row double-clicked
• SelectColumn(usize) - Column selected
• SelectCell(usize, usize) - Cell selected (row_ix, col_ix)
• DoubleClickedCell(usize, usize) - Cell double-clicked (row_ix, col_ix)
• RightClickedCell(usize, usize) - Cell right-clicked (row_ix, col_ix)
• RightClickedRow(Option<usize>) - Row right-clicked
• ColumnWidthsChanged(Vec<Pixels>) - Column widths changed
• MoveColumn(usize, usize) - Column moved (from_ix, to_ix)