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505159a464
This used to conflict with the util crate from the standard library, which has long since been removed. The import in layout has not been changed because of a conflict with the util mod there.
66 lines
2.7 KiB
Rust
66 lines
2.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! Traits that nodes must implement. Breaks the otherwise-cyclic dependency between layout and
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//! style.
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use cssparser::RGBA;
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use legacy::{IntegerAttribute, LengthAttribute, SimpleColorAttribute, UnsignedIntegerAttribute};
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use selectors::AttrSelector;
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use util::str::LengthOrPercentageOrAuto;
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use string_cache::{Atom, Namespace};
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pub trait TNode<'a, E: TElement<'a>> : Clone + Copy {
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fn parent_node(self) -> Option<Self>;
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fn first_child(self) -> Option<Self>;
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fn last_child(self) -> Option<Self>;
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fn prev_sibling(self) -> Option<Self>;
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fn next_sibling(self) -> Option<Self>;
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fn is_document(self) -> bool;
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fn is_element(self) -> bool;
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fn as_element(self) -> E;
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fn match_attr<F>(self, attr: &AttrSelector, test: F) -> bool where F: Fn(&str) -> bool;
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fn is_html_element_in_html_document(self) -> bool;
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fn has_changed(self) -> bool;
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unsafe fn set_changed(self, value: bool);
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fn is_dirty(self) -> bool;
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unsafe fn set_dirty(self, value: bool);
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fn has_dirty_siblings(self) -> bool;
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unsafe fn set_dirty_siblings(self, value: bool);
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fn has_dirty_descendants(self) -> bool;
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unsafe fn set_dirty_descendants(self, value: bool);
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}
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pub trait TElement<'a> : Copy {
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fn get_attr(self, namespace: &Namespace, attr: &Atom) -> Option<&'a str>;
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fn get_attrs(self, attr: &Atom) -> Vec<&'a str>;
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fn get_link(self) -> Option<&'a str>;
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fn get_local_name(self) -> &'a Atom;
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fn get_namespace(self) -> &'a Namespace;
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fn get_hover_state(self) -> bool;
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fn get_id(self) -> Option<Atom>;
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fn get_disabled_state(self) -> bool;
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fn get_enabled_state(self) -> bool;
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fn get_checked_state(self) -> bool;
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fn get_indeterminate_state(self) -> bool;
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fn has_class(self, name: &Atom) -> bool;
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fn has_nonzero_border(self) -> bool;
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// Ordinarily I wouldn't use callbacks like this, but the alternative is
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// really messy, since there is a `JSRef` and a `RefCell` involved. Maybe
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// in the future when we have associated types and/or a more convenient
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// JS GC story... --pcwalton
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fn each_class<F>(self, callback: F) where F: FnMut(&Atom);
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}
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pub trait TElementAttributes : Copy {
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fn get_length_attribute(self, attribute: LengthAttribute) -> LengthOrPercentageOrAuto;
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fn get_integer_attribute(self, attribute: IntegerAttribute) -> Option<i32>;
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fn get_unsigned_integer_attribute(self, attribute: UnsignedIntegerAttribute) -> Option<u32>;
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fn get_simple_color_attribute(self, attribute: SimpleColorAttribute) -> Option<RGBA>;
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}
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