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use webcore::value::Reference;
use webcore::try_from::TryInto;
use webcore::reference_type::ReferenceType;
/// A blob object represents a file-like object of immutable, raw data.
/// Blobs represent data that isn't necessarily in a JavaScript-native format.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Blob)
// https://w3c.github.io/FileAPI/#dfn-Blob
pub trait IBlob: ReferenceType {
/// The size, in bytes, of the data contained in the Blob object.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Blob/size)
// https://w3c.github.io/FileAPI/#ref-for-dfn-size%E2%91%A0
fn len( &self ) -> u64 {
let reference = self.as_ref();
let length: u64 = js!( return @{reference}.size; ).try_into().unwrap();
length
}
/// A string indicating the MIME type of the data contained in the `Blob`.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Blob/type)
// https://w3c.github.io/FileAPI/#ref-for-dfn-type%E2%91%A0
fn mime( &self ) -> Option< String > {
let reference = self.as_ref();
let mime: String = js!( return @{reference}.type; ).try_into().unwrap();
if mime.is_empty() {
None
} else {
Some( mime )
}
}
}
/// A reference to a JavaScript object which implements the [IBlob](trait.IBlob.html)
/// interface.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Blob)
// https://w3c.github.io/FileAPI/#dfn-Blob
#[derive(Clone, Debug, PartialEq, Eq, ReferenceType)]
#[reference(instance_of = "Blob")]
pub struct Blob( Reference );
impl IBlob for Blob {}