leptodon 0.1.0

your Leptos UI toolkit for data science
Documentation 
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// Leptodon
//
// Copyright (C) 2025-2026 Open Analytics NV
//
// ===========================================================================
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the Apache License as published by The Apache Software
// Foundation, either version 2 of the License, or (at your option) any later
// version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the Apache License for more details.
//
// You should have received a copy of the Apache License along with this program.
// If not, see <http://www.apache.org/licenses/>
use leptos_struct_table::{ColumnSort, DragHandler, TableClassesProvider};

pub mod grouping;

pub struct StyledHeadDragHandler;

impl<Column> DragHandler<Column> for StyledHeadDragHandler
where
    Column: Clone + PartialEq + Send + Sync + 'static,
{
    fn grabbed_class(&self) -> &'static str {
        "outline outline-blue-500 outline-dashed -outline-offset-1 bg-blue-500/10"
    }

    fn hover_left_class(&self) -> &'static str {
        "relative border-l-2 border-blue-500 after:content-[''] after:absolute after:left-0 after:top-0 after:w-0 after:h-0 after:border-l-[6px] after:border-l-transparent after:border-r-[6px] after:border-r-transparent after:border-t-[8px] after:border-t-blue-500 after:-translate-x-[7px]"
    }

    fn hover_right_class(&self) -> &'static str {
        "relative border-r-2 border-blue-500 after:content-[''] after:absolute after:right-0 after:top-0 after:w-0 after:h-0 after:border-r-[6px] after:border-r-transparent after:border-l-[6px] after:border-l-transparent after:border-t-[8px] after:border-t-blue-500 after:translate-x-[7px]"
    }
}

#[derive(Clone, Copy)]
pub struct TailwindClassesPreset;

impl TableClassesProvider for TailwindClassesPreset {
    fn new() -> Self {
        Self
    }

    fn thead_row(&self, template_classes: &str) -> String {
        format!(
            "{} {}",
            "text-xs text-gray-700 uppercase bg-gray-200 dark:bg-gray-700 dark:text-gray-300",
            template_classes
        )
    }

    fn thead_cell(&self, sort: ColumnSort, template_classes: &str) -> String {
        let sort_class = match sort {
            ColumnSort::None => "",
            _ => "text-black dark:text-white",
        };

        format!(
            "cursor-pointer px-5 py-2 {} {}",
            sort_class, template_classes
        )
    }

    fn thead_cell_inner(&self) -> String {
        "flex items-center after:content-[--sort-icon] after:pl-1 after:opacity-40 before:content-[--sort-priority] before:order-last before:pl-0.5 before:font-light before:opacity-40".to_string()
    }

    fn row(&self, row_index: usize, selected: bool, template_classes: &str) -> String {
        let bg_color = if row_index.is_multiple_of(2) {
            if selected {
                "bg-sky-300 text-gray-700 dark:bg-sky-700 dark:text-gray-400"
            } else {
                "bg-white dark:bg-gray-900 hover:bg-gray-100 dark:hover:bg-gray-800"
            }
        } else if selected {
            "bg-sky-300 text-gray-700 dark:bg-sky-700 dark:text-gray-400"
        } else {
            "bg-gray-50 dark:bg-gray-800 hover:bg-gray-100 dark:hover:bg-gray-700"
        };

        format!(
            "{} {} {}",
            "border-b dark:border-gray-700", bg_color, template_classes
        )
    }

    fn loading_cell(&self, _row_index: usize, _col_index: usize, prop_class: &str) -> String {
        format!("{} {}", "px-5 py-2", prop_class)
    }

    fn loading_cell_inner(&self, row_index: usize, _col_index: usize, prop_class: &str) -> String {
        let width = match row_index % 4 {
            0 => "w-[calc(85%-2.5rem)]",
            1 => "w-[calc(90%-2.5rem)]",
            2 => "w-[calc(75%-2.5rem)]",
            _ => "w-[calc(60%-2.5rem)]",
        };
        format!(
            "animate-pulse h-2 bg-gray-200 rounded-full dark:bg-gray-700 inline-block align-middle {} {}",
            width, prop_class
        )
    }

    fn cell(&self, template_classes: &str) -> String {
        format!("{} {}", "px-5 py-2", template_classes)
    }
}