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use crate::glue::{Action, GlobalEventCx, Id};
use crate::element_tree::{Element, ElementExt, NoEvent, VirtualDom};
use crate::flex::FlexParams;
use crate::widgets::TextBoxWidget;
use crate::element_tree::ReconcileCtx;
use derivative::Derivative;
use tracing::{instrument, trace};
#[derive(Derivative, PartialEq)]
#[derivative(Debug(bound = ""), Default(bound = ""), Clone(bound = ""))]
pub struct TextBox<CpEvent = NoEvent, CpState = ()> {
pub text: String,
pub flex: FlexParams,
#[derivative(Debug = "ignore")]
pub _markers: std::marker::PhantomData<(CpEvent, CpState)>,
}
#[derive(Derivative, PartialEq)]
#[derivative(Debug(bound = ""), Default(bound = ""), Clone(bound = ""))]
pub struct TextBoxData<CpEvent = NoEvent, CpState = ()> {
pub text: String,
pub flex: FlexParams,
#[derivative(Debug = "ignore")]
pub _markers: std::marker::PhantomData<(CpEvent, CpState)>,
}
#[derive(Debug, Clone, Default, PartialEq)]
pub struct TextChanged {
pub new_content: String,
}
impl<CpEvent, CpState> TextBox<CpEvent, CpState> {
pub fn new(text: impl Into<String>) -> Self {
TextBox {
text: text.into(),
flex: FlexParams {
flex: 1.0,
alignment: None,
},
_markers: Default::default(),
}
}
pub fn with_flex_params(self, flex_params: FlexParams) -> Self {
TextBox {
flex: flex_params,
..self
}
}
pub fn on_text_changed(
self,
callback: impl Fn(&mut CpState, TextChanged),
) -> impl Element<CpEvent, CpState> {
self.on(callback)
}
}
impl<CpEvent, CpState> Element<CpEvent, CpState> for TextBox<CpEvent, CpState> {
type Event = TextChanged;
type AggregateChildrenState = ();
type BuildOutput = TextBoxData<CpEvent, CpState>;
#[instrument(name = "TextBox", skip(self, _prev_state))]
fn build(self, _prev_state: ()) -> (TextBoxData<CpEvent, CpState>, ()) {
(
TextBoxData {
text: self.text,
flex: self.flex,
_markers: Default::default(),
},
(),
)
}
}
impl<CpEvent, CpState> VirtualDom<CpEvent, CpState> for TextBoxData<CpEvent, CpState> {
type Event = TextChanged;
type AggregateChildrenState = ();
type TargetWidgetSeq = TextBoxWidget;
#[instrument(name = "TextBox", skip(self))]
fn init_tree(&self) -> TextBoxWidget {
TextBoxWidget::new(self.text.clone(), self.flex, Id::new())
}
#[instrument(name = "TextBox", skip(self, _other, widget, ctx))]
fn reconcile(&self, _other: &Self, widget: &mut TextBoxWidget, ctx: &mut ReconcileCtx) {
widget.text = self.text.clone();
widget.request_druid_update(ctx);
}
#[instrument(
name = "TextBox",
skip(self, _component_state, _children_state, widget, cx)
)]
fn process_local_event(
&self,
_component_state: &mut CpState,
_children_state: &mut Self::AggregateChildrenState,
widget: &mut TextBoxWidget,
cx: &mut GlobalEventCx,
) -> Option<TextChanged> {
let id = widget.id;
if let Some(Action::TextChanged(new_content)) = cx.app_data.dequeue_action(id) {
trace!("Processed text change");
Some(TextChanged { new_content })
} else {
None
}
}
}
#[cfg(test)]
mod tests {
}