OneCAD-Draft/src/ui/layout_manager.rs

//! Layout Manager window — fills the entire OS window.

use crate::app::Message;
use iced::widget::{button, column, container, row, scrollable, text, text_input, Space};
use iced::{Background, Border, 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 TEXT:   Color = Color { r: 0.88, g: 0.88, b: 0.88, 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 ACTIVE: Color = Color { r: 0.20, g: 0.40, b: 0.70, a: 1.0 };
const FIELD:  Color = Color { r: 0.10, g: 0.10, b: 0.10, a: 1.0 };
const LIST:   Color = Color { r: 0.12, g: 0.12, b: 0.12, a: 1.0 };
const WARN:   Color = Color { r: 0.80, g: 0.35, b: 0.25, a: 1.0 };

fn btn_s(accent: bool) -> impl Fn(&Theme, button::Status) -> button::Style {
    move |_: &Theme, st| button::Style {
        background: Some(Background::Color(match (accent, st) {
            (true,  button::Status::Hovered | button::Status::Pressed) => Color { r: 0.20, g: 0.42, b: 0.72, a: 1.0 },
            (false, button::Status::Hovered | button::Status::Pressed) => Color { r: 0.28, g: 0.28, b: 0.28, a: 1.0 },
            (true,  _) => ACCENT,
            _ => Color { r: 0.22, g: 0.22, b: 0.22, a: 1.0 },
        })),
        text_color: TEXT,
        border: Border { color: BORDER, width: 1.0, radius: 4.0.into() },
        ..Default::default()
    }
}

fn list_item(active: bool) -> impl Fn(&Theme, button::Status) -> button::Style {
    move |_: &Theme, st| button::Style {
        background: Some(Background::Color(match (active, st) {
            (true,  _) => ACTIVE,
            (false, button::Status::Hovered | button::Status::Pressed) => Color { r: 0.26, g: 0.26, b: 0.26, a: 1.0 },
            _ => Color::TRANSPARENT,
        })),
        text_color: TEXT,
        ..Default::default()
    }
}

fn field_style(_: &Theme, _: text_input::Status) -> text_input::Style {
    text_input::Style {
        background: Background::Color(FIELD),
        border: Border { color: BORDER, width: 1.0, radius: 3.0.into() },
        icon: TEXT, placeholder: DIM, value: TEXT, selection: ACCENT,
    }
}

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

pub fn view_window<'a>(
    layouts: Vec<String>,
    selected: &'a str,
    rename_buf: &'a str,
    current: String,
) -> Element<'a, Message> {
    let is_model = selected == "Model";

    // ── Toolbar ───────────────────────────────────────────────────────────
    let toolbar = container(
        row![
            button(text("New Layout").size(11)).on_press(Message::LayoutManagerNew).style(btn_s(false)).padding([4, 10]),
            button(text("Delete").size(11))
                .on_press(Message::LayoutManagerDelete)
                .style(move |_: &Theme, st| button::Style {
                    background: Some(Background::Color(match st {
                        button::Status::Hovered | button::Status::Pressed => Color { r: 0.60, g: 0.20, b: 0.18, a: 1.0 },
                        _ => Color { r: 0.22, g: 0.22, b: 0.22, a: 1.0 },
                    })),
                    text_color: if is_model { DIM } else { WARN },
                    border: Border { color: BORDER, width: 1.0, radius: 4.0.into() },
                    ..Default::default()
                })
                .padding([4, 10]),
            Space::new().width(Fill),
            button(text("◀ Move Left").size(11)).on_press(Message::LayoutManagerMoveLeft).style(btn_s(false)).padding([4, 8]),
            button(text("Move Right ▶").size(11)).on_press(Message::LayoutManagerMoveRight).style(btn_s(false)).padding([4, 8]),
            button(text("Set Current").size(11)).on_press(Message::LayoutManagerSetCurrent).style(btn_s(true)).padding([4, 10]),
        ]
        .spacing(4)
        .align_y(iced::Center)
    )
    .style(|_: &Theme| container::Style {
        background: Some(Background::Color(TB)),
        ..Default::default()
    })
    .width(Fill)
    .padding([5, 8]);

    // ── Left: Layout list ─────────────────────────────────────────────────
    let list_items: Vec<Element<'_, Message>> = layouts.iter().map(|name| {
        let is_sel = name.as_str() == selected;
        let is_cur = name.as_str() == current.as_str();
        let label = if is_cur { format!("{name} ◀") } else { name.clone() };
        button(text(label).size(12))
            .on_press(Message::LayoutManagerSelect(name.clone()))
            .style(list_item(is_sel))
            .padding([5, 10])
            .width(Fill)
            .into()
    }).collect();

    let layout_list = container(
        column![
            text("Layouts").size(10).color(DIM),
            container(scrollable(column(list_items).spacing(2)).height(Fill))
                .style(|_: &Theme| container::Style {
                    background: Some(Background::Color(LIST)),
                    border: Border { color: BORDER, width: 1.0, radius: 3.0.into() },
                    ..Default::default()
                })
                .width(Fill)
                .height(Fill)
                .padding(2),
        ]
        .spacing(4)
        .height(Fill)
    )
    .width(220)
    .height(Fill)
    .padding(iced::Padding { top: 12.0, right: 8.0, bottom: 12.0, left: 12.0 });

    // ── Right: Details + rename ───────────────────────────────────────────
    let details = container(
        column![
            text(if is_model { "Model Space" } else { "Paper Space Layout" })
                .size(13).color(TEXT),
            Space::new().height(8),
            row![
                text("Name:").size(11).color(DIM).width(80),
                text(selected).size(11),
            ].spacing(8).align_y(iced::Center),
            row![
                text("Status:").size(11).color(DIM).width(80),
                text(if selected == current.as_str() { "Active ◀" } else { "Inactive" })
                    .size(11)
                    .color(if selected == current.as_str() { ACCENT } else { DIM }),
            ].spacing(8).align_y(iced::Center),
            Space::new().height(16),
            text("Rename").size(10).color(DIM),
            row![
                text_input("New name…", rename_buf)
                    .on_input(Message::LayoutManagerRenameBuf)
                    .on_submit(Message::LayoutManagerRenameCommit)
                    .style(field_style)
                    .size(11)
                    .padding([4, 8]),
                button(text("OK").size(11))
                    .on_press(Message::LayoutManagerRenameCommit)
                    .style(btn_s(true))
                    .padding([4, 10]),
            ].spacing(6).align_y(iced::Center),
        ]
        .spacing(8)
    )
    .width(Fill)
    .padding([12, 12]);

    let body = row![layout_list, vsep(), details].height(Fill);

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