uzor 1.2.2

//! Tab input-coordinator registration helpers.

use crate::app_context::ContextManager;
use crate::layout::docking::DockPanel;
use crate::input::core::coordinator::{InputCoordinator, LayerId};
use crate::input::core::sense::Sense;
use crate::input::core::widget_kind::WidgetKind;
use crate::layout::{LayoutManager, LayoutNodeId, WidgetNode};
use crate::render::RenderContext;
use crate::types::{Rect, WidgetId, CompositeId};

use super::render::{draw_tab, TabView};
use super::settings::TabSettings;
use super::state::TabState;

// ---------------------------------------------------------------------------
// Core registration helpers (existing — kept)
// ---------------------------------------------------------------------------

/// Register a tab as a top-level composite widget.
///
/// If `close_btn_rect` is `Some`, an atomic `Button` child is registered for
/// the close button. The close button id is `"{tab_id}:close"`.
///
/// Returns the [`CompositeId`] of the tab composite.
pub fn register_tab(
    coord: &mut InputCoordinator,
    tab_id: impl Into<WidgetId>,
    rect: Rect,
    sense: Sense,
    close_btn_rect: Option<Rect>,
) -> CompositeId {
    let id = coord.register_composite(tab_id, WidgetKind::ChromeTab, rect, sense, &LayerId::main());
    if let Some(close_rect) = close_btn_rect {
        let close_id = format!("{}:close", id.0.0);
        coord.register_child(&id, close_id, WidgetKind::Button, close_rect, Sense::CLICK);
    }
    id
}

/// Register a tab composite on an explicit layer.
///
/// Use this variant when the tab strip lives on a non-main layer (e.g.
/// inside a Chrome that is on a popup layer).
pub fn register_tab_on_layer(
    coord: &mut InputCoordinator,
    tab_id: impl Into<WidgetId>,
    rect: Rect,
    sense: Sense,
    close_btn_rect: Option<Rect>,
    layer: &LayerId,
) -> CompositeId {
    let id = coord.register_composite(tab_id, WidgetKind::ChromeTab, rect, sense, layer);
    if let Some(close_rect) = close_btn_rect {
        let close_id = format!("{}:close", id.0.0);
        coord.register_child(&id, close_id, WidgetKind::Button, close_rect, Sense::CLICK);
    }
    id
}

// ---------------------------------------------------------------------------
// Convenience wrappers — make call-sites self-documenting.
// All three wrappers use the same composite registration; the names clarify
// which visual variant the tab belongs to.
// ---------------------------------------------------------------------------

/// Register a Chrome (browser-style) tab on the main layer.
///
/// Pass `close_btn_rect = Some(...)` for closable tabs;
/// the close button is registered as a `Button` child with id `"{tab_id}:close"`.
pub fn register_chrome_tab(
    coord: &mut InputCoordinator,
    tab_id: impl Into<WidgetId>,
    rect: Rect,
    close_btn_rect: Option<Rect>,
) -> CompositeId {
    register_tab(coord, tab_id, rect, Sense::CLICK | Sense::HOVER, close_btn_rect)
}

/// Register a ModalSidebar (icon-only vertical) tab on the given layer.
///
/// Modal tabs always live on a layer (the modal's own layer); pass the layer
/// id created for that modal.
pub fn register_sidebar_tab(
    coord: &mut InputCoordinator,
    tab_id: impl Into<WidgetId>,
    rect: Rect,
    layer: &LayerId,
) -> CompositeId {
    // Sidebar tabs are never closable — no close child needed.
    register_tab_on_layer(coord, tab_id, rect, Sense::CLICK | Sense::HOVER, None, layer)
}

/// Register a ModalHorizontal (text + filled-bg active) tab on the given layer.
///
/// Pass `close_btn_rect = Some(...)` if the variant needs a close button
/// (not present in mlc horizontal tabs, but accepted for future use).
pub fn register_horizontal_tab(
    coord: &mut InputCoordinator,
    tab_id: impl Into<WidgetId>,
    rect: Rect,
    close_btn_rect: Option<Rect>,
    layer: &LayerId,
) -> CompositeId {
    register_tab_on_layer(coord, tab_id, rect, Sense::CLICK | Sense::HOVER, close_btn_rect, layer)
}

// ── Level 1 / Level 2 entry points ───────────────────────────────────────────

/// Level 1 — register a tab with an explicit `InputCoordinator`.
///
/// Wraps `register_tab_on_layer`. `sense` defaults to `CLICK | HOVER`; pass an
/// explicit value for non-standard tabs (e.g. hover-only preview tabs).
pub fn register_input_coordinator_tab(
    coord: &mut InputCoordinator,
    tab_id: impl Into<WidgetId>,
    rect: Rect,
    sense: Sense,
    close_btn_rect: Option<Rect>,
    layer: &LayerId,
    state: &mut TabState,
) -> CompositeId {
    let _ = state; // transient per-frame state; managed by caller each frame
    register_tab_on_layer(coord, tab_id, rect, sense, close_btn_rect, layer)
}

/// Level 2 — register a tab via `ContextManager`, pulling `TabState` from the registry,
/// and draw it using the provided render context.
///
/// Uses `CLICK | HOVER` sense. `view` supplies per-frame tab config, hover, and press
/// state. `settings` supplies visual style. For custom sense use
/// `register_input_coordinator_tab`.
pub fn register_context_manager_tab(
    ctx: &mut ContextManager,
    render: &mut dyn RenderContext,
    tab_id: impl Into<WidgetId>,
    rect: Rect,
    close_btn_rect: Option<Rect>,
    layer: &LayerId,
    view: &TabView<'_>,
    settings: &TabSettings,
) -> CompositeId {
    let tab_id: WidgetId = tab_id.into();
    let state = ctx.registry.get_or_insert_with(tab_id.clone(), TabState::default);
    let id = register_input_coordinator_tab(
        &mut ctx.input,
        tab_id,
        rect,
        Sense::CLICK | Sense::HOVER,
        close_btn_rect,
        layer,
        state,
    );
    draw_tab(render, rect, view, settings);
    id
}

/// Level 3 — register a tab via `LayoutManager`.
pub fn register_layout_manager_tab<P: DockPanel>(
    layout: &mut LayoutManager<P>,
    render: &mut dyn RenderContext,
    parent: LayoutNodeId,
    tab_id: impl Into<WidgetId>,
    rect: Rect,
    close_btn_rect: Option<Rect>,
    view: &TabView<'_>,
    settings: &TabSettings,
) -> CompositeId {
    let tab_id: WidgetId = tab_id.into();
    let layer = layout.compute_layer_for(parent);
    layout.tree_mut().add_widget(parent, WidgetNode { id: tab_id.clone(), kind: WidgetKind::ChromeTab, rect, sense: Sense::CLICK | Sense::HOVER, label: None });
    register_context_manager_tab(
        layout.ctx_mut(), render, tab_id, rect, close_btn_rect, &layer, view, settings,
    )
}