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use crate::matcher::Matcher;
use crate::Selection;
use std::collections::HashSet;
impl<'a> Selection<'a> {
/// Checks the current matched set of elements against a selector and
/// returns true if at least one of these elements matches.
pub fn is(&self, sel: &str) -> bool {
if self.length() > 0 {
return Matcher::new(sel)
.map(|matcher| self.is_matcher(&matcher))
.unwrap_or(false);
}
false
}
/// Checks the current matched set of elements against a matcher and
/// returns true if at least one of these elements matches.
pub fn is_matcher(&self, matcher: &Matcher) -> bool {
if self.length() > 0 {
return self
.nodes()
.into_iter()
.filter(|node| matcher.match_element(*node))
.count()
> 0;
}
false
}
/// Checks the current matches set of elemets against a selection and
/// returns true if at least one of these elements matches.
pub fn is_selection(&self, sel: &Selection) -> bool {
if self.length() == 0 || sel.length() == 0 {
return false;
}
let mut m = HashSet::with_capacity(sel.length());
for node in sel.nodes() {
m.insert(node.id);
}
for node in self.nodes() {
if m.contains(&node.id) {
return true;
}
}
false
}
}