cad-editor/src/ui/shortcuts.rs

//! Keyboard Shortcuts Reference window — fills the entire OS window.

use crate::app::Message;
use iced::widget::{column, container, row, scrollable, text, Space};
use iced::{Background, Color, Element, Fill, Theme};

const TB:     Color = Color { r: 0.13, g: 0.13, b: 0.13, a: 1.0 };
const BG:     Color = Color { r: 0.15, g: 0.15, b: 0.15, a: 1.0 };
const BORDER: Color = Color { r: 0.35, g: 0.35, b: 0.35, a: 1.0 };
const DIM:    Color = Color { r: 0.55, g: 0.55, b: 0.55, a: 1.0 };
const ACCENT: Color = Color { r: 0.25, g: 0.50, b: 0.85, a: 1.0 };
const KEY:    Color = Color { r: 0.40, g: 0.70, b: 1.00, a: 1.0 };

fn hdivider<'a>() -> Element<'a, Message> {
    container(Space::new().width(Fill).height(1))
        .width(Fill).height(1)
        .style(|_: &Theme| container::Style {
            background: Some(Background::Color(BORDER)),
            ..Default::default()
        })
        .into()
}

fn shortcut_row<'a>(key: &'static str, action: &'static str) -> Element<'a, Message> {
    row![
        text(key).size(11).color(KEY).font(iced::Font::MONOSPACE).width(160),
        text(action).size(11),
    ]
    .spacing(8)
    .align_y(iced::Center)
    .padding([2, 0])
    .into()
}

fn section<'a>(title: &'static str) -> Element<'a, Message> {
    container(text(title).size(11).color(DIM))
        .padding(iced::Padding { top: 6.0, right: 0.0, bottom: 2.0, left: 0.0 })
        .into()
}

pub fn view_window<'a>(
    overrides: &'a std::collections::HashMap<String, String>,
) -> Element<'a, Message> {
    // ── Toolbar ───────────────────────────────────────────────────────────
    let toolbar = container(
        row![
            text("Type  SHORTCUTS SET <key> <cmd>  to add custom shortcuts.")
                .size(10)
                .color(DIM),
        ]
        .align_y(iced::Center)
    )
    .style(|_: &Theme| container::Style {
        background: Some(Background::Color(TB)),
        ..Default::default()
    })
    .width(Fill)
    .padding([5, 10]);

    // ── Shortcut entries ──────────────────────────────────────────────────
    let mut rows: Vec<Element<'_, Message>> = vec![
        section("── Function Keys ──────────────────────────────────────"),
        shortcut_row("F3",                   "Toggle Object Snap"),
        shortcut_row("F7",                   "Toggle Grid"),
        shortcut_row("F8",                   "Toggle Ortho"),
        shortcut_row("F9",                   "Toggle Grid Snap"),
        shortcut_row("F10",                  "Toggle Polar Tracking"),
        shortcut_row("F11",                  "Toggle Object Snap Tracking"),
        shortcut_row("F12",                  "Toggle Dynamic Input"),
        section("── Ctrl Shortcuts ──────────────────────────────────────"),
        shortcut_row("Ctrl+N",               "New Drawing"),
        shortcut_row("Ctrl+O",               "Open File"),
        shortcut_row("Ctrl+S",               "Save"),
        shortcut_row("Ctrl+Shift+S",         "Save As"),
        shortcut_row("Ctrl+Z",               "Undo"),
        shortcut_row("Ctrl+Shift+Z / Ctrl+Y","Redo"),
        shortcut_row("Ctrl+C",               "Copy to Clipboard"),
        shortcut_row("Ctrl+X",               "Cut to Clipboard"),
        shortcut_row("Ctrl+V",               "Paste from Clipboard"),
        section("── Other Keys ──────────────────────────────────────────"),
        shortcut_row("Enter / Space",        "Finalize command / Repeat last"),
        shortcut_row("Escape",               "Cancel active command"),
        shortcut_row("Delete",               "Delete selected entities"),
        shortcut_row("↑ / ↓",               "Command history navigation"),
    ];

    // Custom overrides section
    rows.push(section("── Custom Overrides (SHORTCUTS SET) ──────────────────"));
    if overrides.is_empty() {
        rows.push(
            text("  (none — use: SHORTCUTS SET <key> <command>)")
                .size(11).color(DIM).into()
        );
    } else {
        let mut sorted: Vec<_> = overrides.iter().collect();
        sorted.sort_by_key(|(k, _)| k.as_str());
        for (key, cmd) in sorted {
            rows.push(
                row![
                    text(key.as_str()).size(11).color(KEY).font(iced::Font::MONOSPACE).width(160),
                    text(cmd.as_str()).size(11),
                ]
                .spacing(8).align_y(iced::Center).padding([2, 0])
                .into()
            );
        }
    }

    // ── Section headers styled separately ────────────────────────────────
    let content = scrollable(
        column(rows).spacing(3).padding([12, 16])
    )
    .width(Fill)
    .height(Fill);

    // ── Header row with accent ────────────────────────────────────────────
    let header = container(
        row![
            text("Key").size(10).color(ACCENT).width(160),
            text("Action").size(10).color(ACCENT),
        ]
        .spacing(8)
        .padding([4, 16])
    )
    .style(|_: &Theme| container::Style {
        background: Some(Background::Color(Color { r: 0.13, g: 0.13, b: 0.18, a: 1.0 })),
        ..Default::default()
    })
    .width(Fill);

    container(
        column![toolbar, hdivider(), header, hdivider(), content].spacing(0)
    )
    .style(|_: &Theme| container::Style {
        background: Some(Background::Color(BG)),
        ..Default::default()
    })
    .width(Fill)
    .height(Fill)
    .into()
}