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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use crate::dom::bindings::codegen::Bindings::HTMLProgressElementBinding::HTMLProgressElementMethods;
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::num::Finite;
use crate::dom::bindings::root::{DomRoot, MutNullableDom};
use crate::dom::document::Document;
use crate::dom::element::Element;
use crate::dom::htmlelement::HTMLElement;
use crate::dom::node::Node;
use crate::dom::nodelist::NodeList;
use dom_struct::dom_struct;
use html5ever::{LocalName, Prefix};
#[dom_struct]
pub struct HTMLProgressElement {
htmlelement: HTMLElement,
labels_node_list: MutNullableDom<NodeList>,
}
impl HTMLProgressElement {
fn new_inherited(
local_name: LocalName,
prefix: Option<Prefix>,
document: &Document,
) -> HTMLProgressElement {
HTMLProgressElement {
htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
labels_node_list: MutNullableDom::new(None),
}
}
#[allow(unrooted_must_root)]
pub fn new(
local_name: LocalName,
prefix: Option<Prefix>,
document: &Document,
) -> DomRoot<HTMLProgressElement> {
Node::reflect_node(
Box::new(HTMLProgressElement::new_inherited(
local_name, prefix, document,
)),
document,
)
}
}
impl HTMLProgressElementMethods for HTMLProgressElement {
// https://html.spec.whatwg.org/multipage/#dom-lfe-labels
make_labels_getter!(Labels, labels_node_list);
// https://html.spec.whatwg.org/multipage/#dom-progress-value
fn Value(&self) -> Finite<f64> {
// In case of missing `value`, parse error, or negative `value`, `value` should be
// interpreted as 0. As `get_string_attribute` returns an empty string in case the
// attribute is missing, this case is handeled as the default of the `map_or` function.
//
// It is safe to wrap the number coming from `parse_floating_point_number` as it will
// return Err on inf and nan
self.upcast::<Element>()
.get_string_attribute(&local_name!("value"))
.parse_floating_point_number()
.map_or(Finite::wrap(0.0), |v| {
if v < 0.0 {
Finite::wrap(0.0)
} else {
Finite::wrap(v.min(*self.Max()))
}
})
}
// https://html.spec.whatwg.org/multipage/#dom-progress-value
fn SetValue(&self, new_val: Finite<f64>) {
if 0.0 <= *new_val {
self.upcast::<Element>()
.set_string_attribute(&local_name!("value"), (*new_val).to_string().into());
}
}
// https://html.spec.whatwg.org/multipage/#dom-progress-max
fn Max(&self) -> Finite<f64> {
// In case of missing `max`, parse error, or negative `max`, `max` should be interpreted as
// 1.0. As `get_string_attribute` returns an empty string in case the attribute is missing,
// these cases are handeled by `map_or`
self.upcast::<Element>()
.get_string_attribute(&local_name!("max"))
.parse_floating_point_number()
.map_or(Finite::wrap(1.0), |m| {
if m <= 0.0 {
Finite::wrap(1.0)
} else {
Finite::wrap(m)
}
})
}
// https://html.spec.whatwg.org/multipage/#dom-progress-max
fn SetMax(&self, new_val: Finite<f64>) {
self.upcast::<Element>()
.set_string_attribute(&local_name!("max"), (*new_val).to_string().into());
}
// https://html.spec.whatwg.org/multipage/#dom-progress-position
fn Position(&self) -> Finite<f64> {
let value = self
.upcast::<Element>()
.get_string_attribute(&local_name!("value"));
if value.is_empty() {
Finite::wrap(-1.0)
} else {
let value = self.Value();
let max = self.Max();
// An unsafe Finite constructor might be nice here, as it's unlikely for the
// compiler to infer the following guarantees. It is probably premature
// optimization though.
//
// Safety: `ret` have to be a finite, defined number. This is the case since both
// value and max is finite, max > 0, and a value >> max cannot exist, as
// Self::Value(&self) enforces value <= max.
Finite::wrap(*value / *max)
}
}
}
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