1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144

/* 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 std::cell::Cell;

use dom_struct::dom_struct;
use servo_arc::Arc;
use style::shared_lock::SharedRwLock;
use style::stylesheets::{CssRuleTypes, Stylesheet as StyleStyleSheet};

use crate::dom::bindings::codegen::Bindings::CSSStyleSheetBinding::CSSStyleSheetMethods;
use crate::dom::bindings::error::{Error, ErrorResult, Fallible};
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject};
use crate::dom::bindings::root::{DomRoot, MutNullableDom};
use crate::dom::bindings::str::DOMString;
use crate::dom::cssrulelist::{CSSRuleList, RulesSource};
use crate::dom::element::Element;
use crate::dom::medialist::MediaList;
use crate::dom::node::{stylesheets_owner_from_node, Node};
use crate::dom::stylesheet::StyleSheet;
use crate::dom::window::Window;
use crate::script_runtime::CanGc;

#[dom_struct]
pub struct CSSStyleSheet {
    stylesheet: StyleSheet,
    owner: MutNullableDom<Element>,
    rulelist: MutNullableDom<CSSRuleList>,
    #[ignore_malloc_size_of = "Arc"]
    #[no_trace]
    style_stylesheet: Arc<StyleStyleSheet>,
    origin_clean: Cell<bool>,
}

impl CSSStyleSheet {
    fn new_inherited(
        owner: &Element,
        type_: DOMString,
        href: Option<DOMString>,
        title: Option<DOMString>,
        stylesheet: Arc<StyleStyleSheet>,
    ) -> CSSStyleSheet {
        CSSStyleSheet {
            stylesheet: StyleSheet::new_inherited(type_, href, title),
            owner: MutNullableDom::new(Some(owner)),
            rulelist: MutNullableDom::new(None),
            style_stylesheet: stylesheet,
            origin_clean: Cell::new(true),
        }
    }

    #[allow(crown::unrooted_must_root)]
    pub fn new(
        window: &Window,
        owner: &Element,
        type_: DOMString,
        href: Option<DOMString>,
        title: Option<DOMString>,
        stylesheet: Arc<StyleStyleSheet>,
    ) -> DomRoot<CSSStyleSheet> {
        reflect_dom_object(
            Box::new(CSSStyleSheet::new_inherited(
                owner, type_, href, title, stylesheet,
            )),
            window,
            CanGc::note(),
        )
    }

    fn rulelist(&self) -> DomRoot<CSSRuleList> {
        self.rulelist.or_init(|| {
            let rules = self.style_stylesheet.contents.rules.clone();
            CSSRuleList::new(self.global().as_window(), self, RulesSource::Rules(rules))
        })
    }

    pub fn disabled(&self) -> bool {
        self.style_stylesheet.disabled()
    }

    pub fn get_owner(&self) -> Option<DomRoot<Element>> {
        self.owner.get()
    }

    pub fn set_disabled(&self, disabled: bool) {
        if self.style_stylesheet.set_disabled(disabled) && self.get_owner().is_some() {
            stylesheets_owner_from_node(self.get_owner().unwrap().upcast::<Node>())
                .invalidate_stylesheets();
        }
    }

    pub fn set_owner(&self, value: Option<&Element>) {
        self.owner.set(value);
    }

    pub fn shared_lock(&self) -> &SharedRwLock {
        &self.style_stylesheet.shared_lock
    }

    pub fn style_stylesheet(&self) -> &StyleStyleSheet {
        &self.style_stylesheet
    }

    pub fn set_origin_clean(&self, origin_clean: bool) {
        self.origin_clean.set(origin_clean);
    }

    pub fn medialist(&self) -> DomRoot<MediaList> {
        MediaList::new(
            self.global().as_window(),
            self,
            self.style_stylesheet().media.clone(),
        )
    }
}

impl CSSStyleSheetMethods<crate::DomTypeHolder> for CSSStyleSheet {
    // https://drafts.csswg.org/cssom/#dom-cssstylesheet-cssrules
    fn GetCssRules(&self) -> Fallible<DomRoot<CSSRuleList>> {
        if !self.origin_clean.get() {
            return Err(Error::Security);
        }
        Ok(self.rulelist())
    }

    // https://drafts.csswg.org/cssom/#dom-cssstylesheet-insertrule
    fn InsertRule(&self, rule: DOMString, index: u32) -> Fallible<u32> {
        if !self.origin_clean.get() {
            return Err(Error::Security);
        }
        self.rulelist()
            .insert_rule(&rule, index, CssRuleTypes::default(), None)
    }

    // https://drafts.csswg.org/cssom/#dom-cssstylesheet-deleterule
    fn DeleteRule(&self, index: u32) -> ErrorResult {
        if !self.origin_clean.get() {
            return Err(Error::Security);
        }
        self.rulelist().remove_rule(index)
    }
}