script/dom/xpath/
xpathevaluator.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use std::rc::Rc;
6
7use dom_struct::dom_struct;
8use js::context::JSContext;
9use js::rust::HandleObject;
10use script_bindings::codegen::GenericBindings::WindowBinding::WindowMethods;
11use script_bindings::reflector::{Reflector, reflect_dom_object_with_proto_and_cx};
12
13use crate::dom::bindings::codegen::Bindings::XPathEvaluatorBinding::XPathEvaluatorMethods;
14use crate::dom::bindings::codegen::Bindings::XPathNSResolverBinding::XPathNSResolver;
15use crate::dom::bindings::error::Fallible;
16use crate::dom::bindings::root::{Dom, DomRoot};
17use crate::dom::bindings::str::DOMString;
18use crate::dom::node::Node;
19use crate::dom::window::Window;
20use crate::dom::xpathexpression::XPathExpression;
21use crate::dom::xpathresult::XPathResult;
22use crate::xpath::parse_expression;
23
24#[dom_struct]
25pub(crate) struct XPathEvaluator {
26    reflector_: Reflector,
27    window: Dom<Window>,
28}
29
30impl XPathEvaluator {
31    fn new_inherited(window: &Window) -> XPathEvaluator {
32        XPathEvaluator {
33            reflector_: Reflector::new(),
34            window: Dom::from_ref(window),
35        }
36    }
37
38    pub(crate) fn new(
39        cx: &mut JSContext,
40        window: &Window,
41        proto: Option<HandleObject>,
42    ) -> DomRoot<XPathEvaluator> {
43        reflect_dom_object_with_proto_and_cx(
44            Box::new(XPathEvaluator::new_inherited(window)),
45            window,
46            proto,
47            cx,
48        )
49    }
50}
51
52impl XPathEvaluatorMethods<crate::DomTypeHolder> for XPathEvaluator {
53    /// <https://dom.spec.whatwg.org/#dom-xpathevaluator-xpathevaluator>
54    fn Constructor(
55        cx: &mut JSContext,
56        window: &Window,
57        proto: Option<HandleObject>,
58    ) -> DomRoot<XPathEvaluator> {
59        XPathEvaluator::new(cx, window, proto)
60    }
61
62    /// <https://dom.spec.whatwg.org/#dom-xpathevaluatorbase-createexpression>
63    fn CreateExpression(
64        &self,
65        cx: &mut JSContext,
66        expression: DOMString,
67        resolver: Option<Rc<XPathNSResolver>>,
68    ) -> Fallible<DomRoot<XPathExpression>> {
69        let parsed_expression = parse_expression(
70            cx,
71            &expression.str(),
72            resolver,
73            self.window.Document().is_html_document(),
74        )?;
75        Ok(XPathExpression::new(
76            cx,
77            &self.window,
78            None,
79            parsed_expression,
80        ))
81    }
82
83    /// <https://dom.spec.whatwg.org/#dom-xpathevaluatorbase-creatensresolver>
84    fn CreateNSResolver(&self, node_resolver: &Node) -> DomRoot<Node> {
85        // Legacy: the spec tells us to just return `node_resolver` as-is
86        DomRoot::from_ref(node_resolver)
87    }
88
89    /// <https://dom.spec.whatwg.org/#dom-xpathevaluatorbase-evaluate>
90    fn Evaluate(
91        &self,
92        cx: &mut JSContext,
93        expression: DOMString,
94        context_node: &Node,
95        resolver: Option<Rc<XPathNSResolver>>,
96        result_type: u16,
97        result: Option<&XPathResult>,
98    ) -> Fallible<DomRoot<XPathResult>> {
99        let parsed_expression = parse_expression(
100            cx,
101            &expression.str(),
102            resolver,
103            self.window.Document().is_html_document(),
104        )?;
105        let expression = XPathExpression::new(cx, &self.window, None, parsed_expression);
106        expression.evaluate_internal(cx, context_node, result_type, result)
107    }
108}
script/dom/xpath/xpathevaluator.rs

script/dom/xpath/
xpathevaluator.rs
