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use crate::api::Value;
use i_slint_core::model::{Model, ModelTracker};
use std::cell::RefCell;
pub struct ValueModel {
value: RefCell<Value>,
}
impl ValueModel {
pub fn new(value: Value) -> Self {
Self { value: RefCell::new(value) }
}
}
impl ModelTracker for ValueModel {
fn attach_peer(&self, peer: i_slint_core::model::ModelPeer) {
if let Value::Model(ref model_ptr) = *self.value.borrow() {
model_ptr.model_tracker().attach_peer(peer)
}
}
fn track_row_count_changes(&self) {
if let Value::Model(ref model_ptr) = *self.value.borrow() {
model_ptr.model_tracker().track_row_count_changes()
}
}
fn track_row_data_changes(&self, row: usize) {
if let Value::Model(ref model_ptr) = *self.value.borrow() {
model_ptr.model_tracker().track_row_data_changes(row)
}
}
}
impl Model for ValueModel {
type Data = Value;
fn row_count(&self) -> usize {
match &*self.value.borrow() {
Value::Bool(b) => {
if *b {
1
} else {
0
}
}
Value::Number(x) => *x as usize,
Value::Void => 0,
Value::Model(model_ptr) => model_ptr.row_count(),
x => panic!("Invalid model {:?}", x),
}
}
fn row_data(&self, row: usize) -> Option<Self::Data> {
if row >= self.row_count() {
None
} else {
Some(match &*self.value.borrow() {
Value::Bool(_) => Value::Void,
Value::Number(_) => Value::Number(row as _),
Value::Model(model_ptr) => model_ptr.row_data(row)?,
x => panic!("Invalid model {:?}", x),
})
}
}
fn model_tracker(&self) -> &dyn ModelTracker {
self
}
fn set_row_data(&self, row: usize, data: Self::Data) {
match &mut *self.value.borrow_mut() {
Value::Model(model_ptr) => model_ptr.set_row_data(row, data),
_ => eprintln!("Trying to change the value of a read-only integer model."),
}
}
fn as_any(&self) -> &dyn core::any::Any {
self
}
}
