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use std::convert::TryFrom; use crate::console::{Write, Writer}; use crate::event::on_event::FromEvent; use wasm_bindgen::JsCast; pub trait Event: AsRef<web_sys::Event> { fn bubbles(&self) -> bool { self.as_ref().bubbles() } fn cancelable(&self) -> bool { self.as_ref().cancelable() } fn composed(&self) -> bool { self.as_ref().composed() } fn is_trusted(&self) -> bool { self.as_ref().is_trusted() } fn default_prevented(&self) -> bool { self.as_ref().default_prevented() } fn event_phase(&self) -> EventPhase { match self.as_ref().event_phase() { web_sys::Event::NONE => EventPhase::None, web_sys::Event::CAPTURING_PHASE => EventPhase::CapturingPhase, web_sys::Event::AT_TARGET => EventPhase::AtTarget, web_sys::Event::BUBBLING_PHASE => EventPhase::BubblingPhase, _ => unreachable!(), } } fn event_type(&self) -> String { self.as_ref().type_() } fn target(&self) -> Option<GenericEventTarget> { self.as_ref().target().map(|t| t.into()) } fn current_target(&self) -> Option<GenericEventTarget> { self.as_ref().current_target().map(|t| t.into()) } fn composed_path(&self) -> ComposedPath { ComposedPath { inner: self.as_ref().composed_path(), } } fn prevent_default(&self) { self.as_ref().prevent_default() } fn stop_propagation(&self) { self.as_ref().stop_propagation() } fn stop_immediate_propagation(&self) { self.as_ref().stop_immediate_propagation() } } #[derive(Clone, Copy, PartialEq, Eq, Debug)] pub enum EventPhase { None, CapturingPhase, AtTarget, BubblingPhase, } #[derive(Clone, Debug)] pub struct GenericEventTarget { inner: web_sys::EventTarget, } impl From<web_sys::EventTarget> for GenericEventTarget { fn from(inner: web_sys::EventTarget) -> Self { GenericEventTarget { inner } } } impl AsRef<web_sys::EventTarget> for GenericEventTarget { fn as_ref(&self) -> &web_sys::EventTarget { &self.inner } } impl Write for GenericEventTarget { fn write(&self, writer: &mut Writer) { writer.write_1(self.inner.as_ref()) } } #[derive(Debug)] pub struct ComposedPath { inner: js_sys::Array, } impl ComposedPath { pub fn get(&self, index: usize) -> Option<GenericEventTarget> { u32::try_from(index).ok().map(|index| GenericEventTarget { inner: self.inner.get(index).unchecked_into(), }) } pub fn len(&self) -> usize { self.inner.length() as usize } pub fn is_empty(&self) -> bool { self.len() == 0 } pub fn is_not_empty(&self) -> bool { !self.is_empty() } pub fn first(&self) -> Option<GenericEventTarget> { self.get(0) } pub fn last(&self) -> Option<GenericEventTarget> { let len = self.len(); if len > 0 { self.get(len - 1) } else { None } } } impl Write for ComposedPath { fn write(&self, writer: &mut Writer) { writer.write_1(self.inner.as_ref()) } } impl IntoIterator for ComposedPath { type Item = GenericEventTarget; type IntoIter = ComposedPathIntoIter; fn into_iter(self) -> Self::IntoIter { ComposedPathIntoIter { composed_path: self, current: 0, } } } pub struct ComposedPathIter<'a> { composed_path: &'a ComposedPath, current: usize, } impl<'a> Iterator for ComposedPathIter<'a> { type Item = GenericEventTarget; fn next(&mut self) -> Option<Self::Item> { let current = self.current; self.current += 1; self.composed_path.get(current) } } pub struct ComposedPathIntoIter { composed_path: ComposedPath, current: usize, } impl Iterator for ComposedPathIntoIter { type Item = GenericEventTarget; fn next(&mut self) -> Option<Self::Item> { let current = self.current; self.current += 1; self.composed_path.get(current) } } #[derive(Clone, Debug)] pub struct GenericEvent { inner: web_sys::Event, } impl From<web_sys::Event> for GenericEvent { fn from(inner: web_sys::Event) -> Self { GenericEvent { inner } } } impl FromEvent for GenericEvent { fn from_event(inner: web_sys::Event) -> Self { GenericEvent { inner } } } impl AsRef<web_sys::Event> for GenericEvent { fn as_ref(&self) -> &web_sys::Event { &self.inner } } impl Write for GenericEvent { fn write(&self, writer: &mut Writer) { writer.write_1(self.inner.as_ref()) } } impl Event for GenericEvent {}