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Form API
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pub mod form2 { | |
use seed::{prelude::*, *}; | |
use seed_hooks::*; | |
#[derive(Clone, Debug)] | |
pub struct FormData { | |
pub name: String, | |
pub color: Option<crate::form_fields::color_picker::Color>, //Option<(i32, f64, f64)>, | |
} | |
pub fn initialize( | |
id: Local, | |
name: Option<String>, | |
color: Option<crate::form_fields::color_picker::Color>, | |
) { | |
form_data(id).set(FormData { | |
name: name.unwrap_or("".to_string()), | |
color: color.clone(), | |
}); | |
crate::form_fields::color_picker::initialize(id, color); | |
} | |
#[atom] | |
pub fn form_data(id: Local) -> Atom<FormData> { | |
FormData { | |
name: "".to_string(), | |
color: None, | |
} | |
} | |
// Individual field's data and respective UI | |
// ==================================== | |
fn name_ui<Ms: 'static, F: FnOnce(String) -> () + Clone + 'static>( | |
value: &String, | |
setter: F, | |
) -> Node<Ms> { | |
div![ | |
label!["Name:"], | |
input![ | |
attrs! {At::Value => value}, | |
input_ev(Ev::Input, move |inp| setter(inp)) | |
] | |
] | |
} | |
#[reaction] | |
fn color_ui<Ms: 'static, F: FnOnce(String) -> () + Clone + 'static>( | |
id: Local, | |
setter: crate::form_fields::color_picker::Impure<F>, | |
) -> Reaction<Node<Ms>> { | |
div![ | |
label!["Color:"], | |
crate::form_fields::color_picker::observable_color_picker( | |
id, | |
input_ev(Ev::Input, move |inp| setter.0(inp)) | |
) | |
.observe() | |
] | |
} | |
#[reaction] | |
pub fn form_ui<Ms: 'static>(id: Local) -> Reaction<Node<Ms>> { | |
let data = form_data(id).observe(); | |
div![ | |
name_ui(&data.name, move |inp| form_data(id) | |
.update(|f| f.name = inp)), | |
color_ui( | |
id, | |
crate::form_fields::color_picker::Impure(move |inp: String| form_data(id) | |
.update(|f| f.color = | |
serde_json::from_str(&inp).expect("JSON deserialization failure"))) | |
) | |
.observe(), | |
] | |
} | |
// Actual View | |
#[topo::nested] | |
pub fn view<Ms: 'static + Clone>() -> Node<Ms> { | |
let form_id = Local::new(); | |
let form_data = form_data(form_id).get(); | |
div![ | |
h1!["Form Data"], | |
p![format!("name: {}", form_data.name)], | |
p![format!("color: {:?}", form_data.color)], | |
h1!["Form"], | |
form_ui(form_id).get(), | |
] | |
} | |
} |
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pub mod color_picker { | |
use seed::{prelude::*, *}; | |
use seed_hooks::*; | |
fn hsv_to_hsl_string(color: &Color) -> String { | |
let hsv = color.0; | |
let l = hsv.2 * (1.0 - hsv.1 / 2.0); | |
let s = if l == 1.0 || l == 0.0 { | |
0.0 | |
} else { | |
(hsv.2 - l) / f64::min(l, 1.0 - l) | |
}; | |
format!( | |
"hsla({}, {}%, {}%, 1)", | |
hsv.0, | |
f64::trunc(s * 100.0), | |
f64::trunc(l * 100.0) | |
) | |
} | |
#[atom] | |
fn widget_status(_local: Local) -> Atom<ColorPickerState> { | |
ColorPickerState { | |
widget_status: HsvWidgetStatus::Unpicked, | |
hsv: Color((100, 0.01, 0.01)), | |
} | |
} | |
#[derive(Clone, Debug, Serialize, Deserialize)] | |
pub struct Color(pub (i32, f64, f64)); | |
impl Color { | |
fn set_hue(self: &mut Self, h: i32) { | |
(self.0).0 = h; | |
} | |
fn set_saturation(self: &mut Self, s: f64) { | |
(self.0).1 = s; | |
} | |
fn set_value(self: &mut Self, v: f64) { | |
(self.0).2 = v; | |
} | |
} | |
#[derive(Clone, Debug)] | |
pub enum HsvWidgetStatus { | |
Unpicked, | |
Open, | |
Picked(Color), //(i32, f64, f64)), | |
} | |
#[derive(Clone, Debug)] | |
struct ColorPickerState { | |
widget_status: HsvWidgetStatus, | |
hsv: Color, // (i32, f64, f64), | |
} | |
#[derive(Clone)] | |
pub struct Impure<T>(pub T) | |
where | |
T: Clone; | |
impl<T> PartialEq for Impure<T> | |
where | |
T: Clone, | |
{ | |
fn eq(&self, _other: &Self) -> bool { | |
true | |
} | |
} | |
impl<T> std::hash::Hash for Impure<T> | |
where | |
T: Clone, | |
{ | |
fn hash<H: std::hash::Hasher>(&self, _state: &mut H) {} | |
} | |
impl<T> std::cmp::Eq for Impure<T> where T: Clone {} | |
pub fn initialize(id: Local, initial_value: Option<Color>) { | |
//Option<(i32, f64, f64)>) { | |
widget_status(id).set(match initial_value { | |
None => ColorPickerState { | |
widget_status: HsvWidgetStatus::Unpicked, | |
hsv: Color((100, 0.01, 0.01)), | |
}, | |
Some(hsv) => ColorPickerState { | |
widget_status: HsvWidgetStatus::Picked(hsv.clone()), | |
hsv: hsv, | |
}, | |
}); | |
} | |
pub fn observable_color_picker<Ms: 'static>( | |
id: Local, | |
ev_handler: EventHandler<Ms>, | |
) -> Reaction<Node<Ms>> { | |
picker_ui(id, Impure(ev_handler)) | |
} | |
#[reaction] | |
fn picker_ui<Ms: 'static>( | |
id: Local, | |
ev_handler: Impure<EventHandler<Ms>>, | |
) -> Reaction<Node<Ms>> { | |
let status = widget_status(id).observe(); | |
seed::log!(status); | |
match status.widget_status { | |
HsvWidgetStatus::Unpicked => picker_unpicked_ui(id), | |
HsvWidgetStatus::Open => picker_open_ui(id, ev_handler), | |
HsvWidgetStatus::Picked(hsv) => picker_picked_ui(id, hsv), | |
} | |
} | |
fn picker_unpicked_ui<Ms: 'static>(id: Local) -> Node<Ms> { | |
div![ | |
C!(styles::STYLES.buttons.button), | |
"Choose Color", | |
widget_status(id).on_click(|s| (*s).widget_status = HsvWidgetStatus::Open) | |
] | |
} | |
fn picker_picked_ui<Ms: 'static>(id: Local, hsv_value: Color) -> Node<Ms> { | |
// hsv_value: (i32, f64, f64)) -> Node<Ms> { | |
div![ | |
div![attrs! { | |
At::Style => format!("background-color: {}; width: 30px;height:30px;margin:20px", | |
hsv_to_hsl_string(&hsv_value)), | |
}], | |
div![ | |
C!(styles::STYLES.buttons.button), | |
"Choose another Color", | |
widget_status(id).on_click(|s| (*s).widget_status = HsvWidgetStatus::Open) | |
] | |
] | |
} | |
//#[reaction] | |
fn picker_open_ui<Ms: 'static>(id: Local, ev_handler: Impure<EventHandler<Ms>>) -> Node<Ms> { | |
let el_ref = use_state(|| ElRef::<web_sys::HtmlElement>::new()); | |
let widget_data = widget_status(id).observe(); | |
let hsv_value = widget_data.hsv.clone(); | |
seed::log("picker_open_ui"); | |
div![ | |
div![attrs! { | |
At::Style => format!("background-color: {}; width: 100px;height:30px;margin:100px", | |
hsv_to_hsl_string(&hsv_value)), | |
}], | |
div![ | |
label!("Hue:"), | |
input![ | |
attrs! {At::Value => (hsv_value.0).0, | |
At::Type => "range",At::Min => 0, At::Max => 360}, | |
widget_status(id) | |
.on_input(|widget, hue| widget.hsv.set_hue(hue.parse::<i32>().unwrap())) | |
] | |
], | |
div![ | |
label!("Saturation:"), | |
input![ | |
attrs! {At::Value => (hsv_value.0).1, | |
At::Type => "range", At::Min => 0.0, At::Max => 1.0, | |
At::Step => "0.01" }, | |
widget_status(id).on_input(|widget, saturation| { | |
widget | |
.hsv | |
.set_saturation(saturation.parse::<f64>().unwrap()) | |
}) | |
] | |
], | |
div![ | |
label!["Value:"], | |
input![ | |
attrs! {At::Value => (hsv_value.0).2, At::Type => "range", At::Min => 0.0, At::Max => 1.0, | |
At::Step => "0.01" }, | |
widget_status(id).on_input(|widget, lightness| { | |
widget.hsv.set_value(lightness.parse::<f64>().unwrap()) | |
}) | |
] | |
], | |
div![ | |
div![ | |
C!(styles::STYLES.buttons.button), | |
"Ok", | |
widget_status(id).on_click(move |s| { | |
let el = el_ref.get().get().unwrap(); | |
let target = el.dyn_into::<web_sys::EventTarget>().unwrap(); | |
target.dispatch_event(&web_sys::Event::new("input").unwrap()); | |
(*s).widget_status = HsvWidgetStatus::Picked(hsv_value); | |
}) | |
], | |
input![ | |
attrs! { | |
At::Style => "display:hidden", | |
At::Value=> serde_json::to_string(&widget_data.hsv).expect("JSON serialization failure"), | |
}, | |
el_ref.get(), | |
ev_handler.0 | |
] | |
] | |
] | |
} | |
#[reaction] | |
//#[topo::nested] | |
pub fn view<Ms: 'static>() -> Reaction<Node<Ms>> { | |
div![ | |
observable_color_picker(Local::new(), input_ev(Ev::Input, |color| seed::log!(color))) | |
.observe(), | |
] | |
} | |
} |
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