stdweb/webapi/
string_map.rs

1use webcore::value::Reference;
2use webcore::try_from::TryInto;
3use private::TODO;
4
5/// Used by the `dataset` HTML attribute to represent data for custom attributes added to elements.
6///
7/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/DOMStringMap)
8// https://html.spec.whatwg.org/#domstringmap
9#[derive(Clone, Debug, PartialEq, Eq, ReferenceType)]
10#[reference(instance_of = "DOMStringMap")]
11pub struct StringMap( Reference );
12
13// The methods here are deliberately named exactly as those from Rust's HashMap.
14impl StringMap {
15    /// Returns a value corresponding to the key.
16    // https://html.spec.whatwg.org/#dom-domstringmap-nameditem
17    pub fn get( &self, key: &str ) -> Option< String > {
18        js!( return @{self}[ @{key} ]; ).try_into().ok()
19    }
20
21    /// Inserts a key-value pair into the map.
22    // https://html.spec.whatwg.org/#dom-domstringmap-setitem
23    pub fn insert( &self, key: &str, value: &str ) -> Result< (), TODO > {
24        js!( @(no_return)
25            @{self}[ @{key} ] = @{value};
26        );
27
28        Ok(())
29    }
30
31    /// Removes a key from the map.
32    // https://html.spec.whatwg.org/#dom-domstringmap-removeitem
33    pub fn remove( &self, key: &str ) {
34        js!( @(no_return)
35            delete @{self}[ @{key} ];
36        );
37    }
38
39    /// Returns true if the map contains a value for the specified key.
40    pub fn contains_key( &self, key: &str ) -> bool {
41        js!( return @{key} in @{self}; ).try_into().unwrap()
42    }
43}
stdweb/webapi/string_map.rs

stdweb/webapi/
string_map.rs
