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// SPDX-License-Identifier: MPL-2.0
// SPDX-FileCopyrightText: 2026 FernTech
//! Tier-3 style protocol for `TextInput`. See `docs/styling-system.md`.
use std::rc::Rc;
use serde::{Deserialize, Serialize};
use crate::build_context::BuildContext;
use crate::signal::Signal;
use crate::widget_id::WidgetId;
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash, Default, Serialize, Deserialize)]
pub enum TextInputVariant {
/// IntUI default: 1 dp bordered rectangle.
#[default]
Outlined,
/// Filled background, no border (Material-3-ish).
Filled,
/// Just a baseline underline.
Underline,
/// No chrome at all — for embedded fields where the parent
/// surface IS the chrome (search fields, ComboBox text part).
Bare,
}
/// Validation outcome state, separate from interaction state. Drives
/// border-color tinting and the per-state recipe lookup independently
/// of focus/hover.
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash, Default, Serialize, Deserialize)]
pub enum TextInputValidationLevel {
#[default]
None,
Info,
Warning,
Error,
/// Brief accent tint after a successful auto-correction.
Corrected,
}
#[derive(Clone, Debug)]
pub struct TextInputStyleConfig {
/// The actual editable area subtree (caret, glyph layout, IME).
/// The style wraps it with border / fill / focus-ring chrome.
pub editor: WidgetId,
pub is_focused: Signal<bool>,
pub is_hovered: Signal<bool>,
pub is_disabled: Signal<bool>,
pub validation: Signal<TextInputValidationLevel>,
pub variant: TextInputVariant,
/// The minimum height the widget resolved for the field, in logical
/// pixels, when it differs from the style's own: an app's explicit
/// `TextInput::min_height`, or the density's target size when a text
/// style sizes the field from its line. `None` — the default — leaves the
/// style its own control height.
///
/// A style that floors its chrome with a minimum height should use this in
/// its place when it is set; one that ignores it keeps its own floor, and
/// the field can then be no shorter than that.
pub min_height: Option<f32>,
}
pub trait TextInputStyle: 'static {
fn make_body(&self, cfg: &TextInputStyleConfig, ctx: &mut BuildContext) -> WidgetId;
}
pub type SharedTextInputStyle = Rc<dyn TextInputStyle>;