858 lines
30 KiB
Rust
858 lines
30 KiB
Rust
//! Implementation of a renderer for Dioxus on the web.
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//!
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//! Oustanding todos:
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//! - Removing event listeners (delegation)
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//! - Passive event listeners
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//! - no-op event listener patch for safari
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//! - tests to ensure dyn_into works for various event types.
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//! - Partial delegation?>
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use dioxus_core::{DomEdit, ElementId, SchedulerMsg, ScopeId, UserEvent};
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use fxhash::FxHashMap;
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use std::{any::Any, fmt::Debug, rc::Rc, sync::Arc};
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use wasm_bindgen::{closure::Closure, JsCast};
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use web_sys::{
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CssStyleDeclaration, Document, Element, Event, HtmlElement, HtmlInputElement,
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HtmlOptionElement, HtmlTextAreaElement, Node,
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};
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use crate::{nodeslab::NodeSlab, WebConfig};
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pub struct WebsysDom {
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stack: Stack,
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/// A map from ElementID (index) to Node
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pub(crate) nodes: NodeSlab,
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document: Document,
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pub(crate) root: Element,
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sender_callback: Rc<dyn Fn(SchedulerMsg)>,
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// map of listener types to number of those listeners
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// This is roughly a delegater
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// TODO: check how infero delegates its events - some are more performant
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listeners: FxHashMap<&'static str, ListenerEntry>,
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}
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type ListenerEntry = (usize, Closure<dyn FnMut(&Event)>);
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impl WebsysDom {
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pub fn new(cfg: WebConfig, sender_callback: Rc<dyn Fn(SchedulerMsg)>) -> Self {
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let document = load_document();
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let nodes = NodeSlab::new(2000);
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let listeners = FxHashMap::default();
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let mut stack = Stack::with_capacity(10);
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let root = load_document().get_element_by_id(&cfg.rootname).unwrap();
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let root_node = root.clone().dyn_into::<Node>().unwrap();
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stack.push(root_node);
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Self {
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stack,
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nodes,
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listeners,
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document,
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sender_callback,
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root,
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}
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}
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pub fn apply_edits(&mut self, mut edits: Vec<DomEdit>) {
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for edit in edits.drain(..) {
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match edit {
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DomEdit::PushRoot { root } => self.push(root),
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DomEdit::AppendChildren { many } => self.append_children(many),
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DomEdit::ReplaceWith { m, root } => self.replace_with(m, root),
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DomEdit::Remove { root } => self.remove(root),
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DomEdit::CreateTextNode { text, root: id } => self.create_text_node(text, id),
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DomEdit::CreateElement { tag, root: id } => self.create_element(tag, None, id),
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DomEdit::CreateElementNs { tag, root: id, ns } => {
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self.create_element(tag, Some(ns), id)
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}
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DomEdit::CreatePlaceholder { root: id } => self.create_placeholder(id),
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DomEdit::NewEventListener {
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event_name,
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scope,
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root: mounted_node_id,
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} => self.new_event_listener(event_name, scope, mounted_node_id),
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DomEdit::RemoveEventListener { event, root } => {
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self.remove_event_listener(event, root)
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}
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DomEdit::SetText { text, root } => self.set_text(text, root),
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DomEdit::SetAttribute {
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field,
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value,
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ns,
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root,
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} => self.set_attribute(field, value, ns, root),
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DomEdit::RemoveAttribute { name, root } => self.remove_attribute(name, root),
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DomEdit::InsertAfter { n, root } => self.insert_after(n, root),
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DomEdit::InsertBefore { n, root } => self.insert_before(n, root),
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}
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}
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}
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fn push(&mut self, root: u64) {
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let key = root as usize;
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let domnode = &self.nodes[key];
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let real_node: Node = match domnode {
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Some(n) => n.clone(),
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None => todo!(),
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};
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self.stack.push(real_node);
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}
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fn append_children(&mut self, many: u32) {
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let root: Node = self
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.stack
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.list
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.get(self.stack.list.len() - (1 + many as usize))
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.unwrap()
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.clone();
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// We need to make sure to add comments between text nodes
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// We ensure that the text siblings are patched by preventing the browser from merging
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// neighboring text nodes. Originally inspired by some of React's work from 2016.
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// -> https://reactjs.org/blog/2016/04/07/react-v15.html#major-changes
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// -> https://github.com/facebook/react/pull/5753
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/*
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todo: we need to track this for replacing/insert after/etc
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*/
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let mut last_node_was_text = false;
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for child in self
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.stack
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.list
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.drain((self.stack.list.len() - many as usize)..)
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{
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if child.dyn_ref::<web_sys::Text>().is_some() {
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if last_node_was_text {
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let comment_node = self
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.document
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.create_comment("dioxus")
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.dyn_into::<Node>()
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.unwrap();
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root.append_child(&comment_node).unwrap();
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}
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last_node_was_text = true;
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} else {
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last_node_was_text = false;
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}
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root.append_child(&child).unwrap();
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}
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}
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fn replace_with(&mut self, m: u32, root: u64) {
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let old = self.nodes[root as usize].as_ref().unwrap();
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let arr: js_sys::Array = self
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.stack
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.list
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.drain((self.stack.list.len() - m as usize)..)
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.collect();
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if let Some(el) = old.dyn_ref::<Element>() {
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el.replace_with_with_node(&arr).unwrap();
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} else if let Some(el) = old.dyn_ref::<web_sys::CharacterData>() {
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el.replace_with_with_node(&arr).unwrap();
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} else if let Some(el) = old.dyn_ref::<web_sys::DocumentType>() {
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el.replace_with_with_node(&arr).unwrap();
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}
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}
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fn remove(&mut self, root: u64) {
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let node = self.nodes[root as usize].as_ref().unwrap();
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if let Some(element) = node.dyn_ref::<Element>() {
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element.remove();
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} else {
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if let Some(parent) = node.parent_node() {
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parent.remove_child(&node).unwrap();
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}
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}
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}
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fn create_placeholder(&mut self, id: u64) {
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self.create_element("pre", None, id);
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self.set_attribute("hidden", "", None, id);
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}
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fn create_text_node(&mut self, text: &str, id: u64) {
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let textnode = self
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.document
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.create_text_node(text)
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.dyn_into::<Node>()
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.unwrap();
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self.stack.push(textnode.clone());
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self.nodes[(id as usize)] = Some(textnode);
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}
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fn create_element(&mut self, tag: &str, ns: Option<&'static str>, id: u64) {
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let tag = wasm_bindgen::intern(tag);
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let el = match ns {
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Some(ns) => self
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.document
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.create_element_ns(Some(ns), tag)
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.unwrap()
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.dyn_into::<Node>()
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.unwrap(),
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None => self
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.document
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.create_element(tag)
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.unwrap()
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.dyn_into::<Node>()
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.unwrap(),
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};
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use smallstr::SmallString;
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use std::fmt::Write;
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let mut s: SmallString<[u8; 8]> = smallstr::SmallString::new();
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write!(s, "{}", id).unwrap();
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let el2 = el.dyn_ref::<Element>().unwrap();
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el2.set_attribute("dioxus-id", s.as_str()).unwrap();
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self.stack.push(el.clone());
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self.nodes[(id as usize)] = Some(el);
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}
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fn new_event_listener(&mut self, event: &'static str, _scope: ScopeId, _real_id: u64) {
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let event = wasm_bindgen::intern(event);
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// attach the correct attributes to the element
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// these will be used by accessing the event's target
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// This ensures we only ever have one handler attached to the root, but decide
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// dynamically when we want to call a listener.
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let el = self.stack.top();
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let el = el.dyn_ref::<Element>().unwrap();
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el.set_attribute("dioxus-event", event).unwrap();
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// Register the callback to decode
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if let Some(entry) = self.listeners.get_mut(event) {
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entry.0 += 1;
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} else {
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let trigger = self.sender_callback.clone();
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let c: Box<dyn FnMut(&Event)> = Box::new(move |event: &web_sys::Event| {
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// "Result" cannot be received from JS
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// Instead, we just build and immediately execute a closure that returns result
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match decode_trigger(event) {
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Ok(synthetic_event) => {
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let target = event.target().unwrap();
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if let Some(node) = target.dyn_ref::<HtmlElement>() {
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if let Some(name) = node.get_attribute("dioxus-prevent-default") {
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if name == synthetic_event.name
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|| name.trim_start_matches("on") == synthetic_event.name
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{
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log::trace!("Preventing default");
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event.prevent_default();
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}
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}
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}
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trigger.as_ref()(SchedulerMsg::Event(synthetic_event))
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}
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Err(e) => log::error!("Error decoding Dioxus event attribute. {:#?}", e),
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};
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});
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let handler = Closure::wrap(c);
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self.root
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.add_event_listener_with_callback(event, (&handler).as_ref().unchecked_ref())
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.unwrap();
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// Increment the listeners
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self.listeners.insert(event.into(), (1, handler));
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}
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}
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fn remove_event_listener(&mut self, _event: &str, _root: u64) {
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todo!()
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}
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fn set_text(&mut self, text: &str, root: u64) {
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let el = self.nodes[root as usize].as_ref().unwrap();
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el.set_text_content(Some(text))
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}
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fn set_attribute(&mut self, name: &str, value: &str, ns: Option<&str>, root: u64) {
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let node = self.nodes[root as usize].as_ref().unwrap();
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if ns == Some("style") {
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if let Some(el) = node.dyn_ref::<Element>() {
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let el = el.dyn_ref::<HtmlElement>().unwrap();
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let style_dc: CssStyleDeclaration = el.style();
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style_dc.set_property(name, value).unwrap();
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}
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} else {
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let fallback = || {
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let el = node.dyn_ref::<Element>().unwrap();
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el.set_attribute(name, value).unwrap()
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};
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match name {
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"dangerous_inner_html" => {
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if let Some(el) = node.dyn_ref::<Element>() {
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el.set_inner_html(value);
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}
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}
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"value" => {
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if let Some(input) = node.dyn_ref::<HtmlInputElement>() {
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/*
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if the attribute being set is the same as the value of the input, then don't bother setting it.
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This is used in controlled components to keep the cursor in the right spot.
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this logic should be moved into the virtualdom since we have the notion of "volatile"
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*/
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if input.value() != value {
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input.set_value(value);
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}
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} else if let Some(node) = node.dyn_ref::<HtmlTextAreaElement>() {
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if name == "value" {
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node.set_value(value);
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}
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} else {
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fallback();
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}
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}
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"checked" => {
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if let Some(input) = node.dyn_ref::<HtmlInputElement>() {
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match value {
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"true" => input.set_checked(true),
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"false" => input.set_checked(false),
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_ => fallback(),
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}
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} else {
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fallback();
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}
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}
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"selected" => {
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if let Some(node) = node.dyn_ref::<HtmlOptionElement>() {
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node.set_selected(true);
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} else {
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fallback();
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}
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}
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_ => {
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// https://github.com/facebook/react/blob/8b88ac2592c5f555f315f9440cbb665dd1e7457a/packages/react-dom/src/shared/DOMProperty.js#L352-L364
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if value == "false" {
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if let Some(el) = node.dyn_ref::<Element>() {
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match name {
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"allowfullscreen"
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| "allowpaymentrequest"
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| "async"
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| "autofocus"
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| "autoplay"
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| "checked"
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| "controls"
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| "default"
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| "defer"
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| "disabled"
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| "formnovalidate"
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| "hidden"
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| "ismap"
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| "itemscope"
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| "loop"
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| "multiple"
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| "muted"
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| "nomodule"
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| "novalidate"
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| "open"
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| "playsinline"
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| "readonly"
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| "required"
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| "reversed"
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| "selected"
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| "truespeed" => {
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let _ = el.remove_attribute(name);
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}
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_ => {
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let _ = el.set_attribute(name, value);
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}
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};
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}
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} else {
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fallback();
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}
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}
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}
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}
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}
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fn remove_attribute(&mut self, name: &str, root: u64) {
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let node = self.nodes[root as usize].as_ref().unwrap();
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if let Some(node) = node.dyn_ref::<web_sys::Element>() {
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node.remove_attribute(name).unwrap();
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}
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if let Some(node) = node.dyn_ref::<HtmlInputElement>() {
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// Some attributes are "volatile" and don't work through `removeAttribute`.
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if name == "value" {
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node.set_value("");
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}
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if name == "checked" {
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node.set_checked(false);
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}
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}
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if let Some(node) = node.dyn_ref::<HtmlOptionElement>() {
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if name == "selected" {
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node.set_selected(true);
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}
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}
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}
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fn insert_after(&mut self, n: u32, root: u64) {
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let old = self.nodes[root as usize].as_ref().unwrap();
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let arr: js_sys::Array = self
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.stack
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.list
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.drain((self.stack.list.len() - n as usize)..)
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.collect();
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if let Some(el) = old.dyn_ref::<Element>() {
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el.after_with_node(&arr).unwrap();
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} else if let Some(el) = old.dyn_ref::<web_sys::CharacterData>() {
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el.after_with_node(&arr).unwrap();
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} else if let Some(el) = old.dyn_ref::<web_sys::DocumentType>() {
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el.after_with_node(&arr).unwrap();
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}
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}
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fn insert_before(&mut self, n: u32, root: u64) {
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let anchor = self.nodes[root as usize].as_ref().unwrap();
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if n == 1 {
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let before = self.stack.pop();
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anchor
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.parent_node()
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.unwrap()
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.insert_before(&before, Some(&anchor))
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.unwrap();
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} else {
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let arr: js_sys::Array = self
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.stack
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.list
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.drain((self.stack.list.len() - n as usize)..)
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.collect();
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if let Some(el) = anchor.dyn_ref::<Element>() {
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el.before_with_node(&arr).unwrap();
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} else if let Some(el) = anchor.dyn_ref::<web_sys::CharacterData>() {
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el.before_with_node(&arr).unwrap();
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} else if let Some(el) = anchor.dyn_ref::<web_sys::DocumentType>() {
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el.before_with_node(&arr).unwrap();
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}
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}
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}
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}
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#[derive(Debug, Default)]
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struct Stack {
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list: Vec<Node>,
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}
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impl Stack {
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#[inline]
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fn with_capacity(cap: usize) -> Self {
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Stack {
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list: Vec::with_capacity(cap),
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}
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}
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#[inline]
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fn push(&mut self, node: Node) {
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self.list.push(node);
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}
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#[inline]
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fn pop(&mut self) -> Node {
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self.list.pop().unwrap()
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}
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fn top(&self) -> &Node {
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match self.list.last() {
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Some(a) => a,
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None => panic!("Called 'top' of an empty stack, make sure to push the root first"),
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}
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}
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}
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pub struct DioxusWebsysEvent(web_sys::Event);
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// safety: currently the web is not multithreaded and our VirtualDom exists on the same thread
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unsafe impl Send for DioxusWebsysEvent {}
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unsafe impl Sync for DioxusWebsysEvent {}
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|
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// todo: some of these events are being casted to the wrong event type.
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// We need tests that simulate clicks/etc and make sure every event type works.
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fn virtual_event_from_websys_event(event: web_sys::Event) -> Arc<dyn Any + Send + Sync> {
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use dioxus_html::on::*;
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use dioxus_html::KeyCode;
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|
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match event.type_().as_str() {
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"copy" | "cut" | "paste" => Arc::new(ClipboardData {}),
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"compositionend" | "compositionstart" | "compositionupdate" => {
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let evt: &web_sys::CompositionEvent = event.dyn_ref().unwrap();
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Arc::new(CompositionData {
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data: evt.data().unwrap_or_default(),
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})
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}
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"keydown" | "keypress" | "keyup" => {
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let evt: &web_sys::KeyboardEvent = event.dyn_ref().unwrap();
|
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Arc::new(KeyboardData {
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alt_key: evt.alt_key(),
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char_code: evt.char_code(),
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key: evt.key(),
|
|
key_code: KeyCode::from_raw_code(evt.key_code() as u8),
|
|
ctrl_key: evt.ctrl_key(),
|
|
locale: "not implemented".to_string(),
|
|
location: evt.location() as usize,
|
|
meta_key: evt.meta_key(),
|
|
repeat: evt.repeat(),
|
|
shift_key: evt.shift_key(),
|
|
which: evt.which() as usize,
|
|
})
|
|
}
|
|
"focus" | "blur" => Arc::new(FocusData {}),
|
|
|
|
// todo: these handlers might get really slow if the input box gets large and allocation pressure is heavy
|
|
// don't have a good solution with the serialized event problem
|
|
"change" | "input" | "invalid" | "reset" | "submit" => {
|
|
let evt: &web_sys::Event = event.dyn_ref().unwrap();
|
|
|
|
let target: web_sys::EventTarget = evt.target().unwrap();
|
|
let value: String = (&target)
|
|
.dyn_ref()
|
|
.map(|input: &web_sys::HtmlInputElement| {
|
|
// todo: special case more input types
|
|
match input.type_().as_str() {
|
|
"checkbox" => {
|
|
match input.checked() {
|
|
true => "true".to_string(),
|
|
false => "false".to_string(),
|
|
}
|
|
},
|
|
_ => {
|
|
input.value()
|
|
}
|
|
}
|
|
})
|
|
.or_else(|| {
|
|
target
|
|
.dyn_ref()
|
|
.map(|input: &web_sys::HtmlTextAreaElement| input.value())
|
|
})
|
|
// select elements are NOT input events - because - why woudn't they be??
|
|
.or_else(|| {
|
|
target
|
|
.dyn_ref()
|
|
.map(|input: &web_sys::HtmlSelectElement| input.value())
|
|
})
|
|
.or_else(|| {
|
|
target
|
|
.dyn_ref::<web_sys::HtmlElement>()
|
|
.unwrap()
|
|
.text_content()
|
|
})
|
|
.expect("only an InputElement or TextAreaElement or an element with contenteditable=true can have an oninput event listener");
|
|
|
|
Arc::new(FormData { value })
|
|
}
|
|
"click" | "contextmenu" | "doubleclick" | "drag" | "dragend" | "dragenter" | "dragexit"
|
|
| "dragleave" | "dragover" | "dragstart" | "drop" | "mousedown" | "mouseenter"
|
|
| "mouseleave" | "mousemove" | "mouseout" | "mouseover" | "mouseup" => {
|
|
let evt: &web_sys::MouseEvent = event.dyn_ref().unwrap();
|
|
Arc::new(MouseData {
|
|
alt_key: evt.alt_key(),
|
|
button: evt.button(),
|
|
buttons: evt.buttons(),
|
|
client_x: evt.client_x(),
|
|
client_y: evt.client_y(),
|
|
ctrl_key: evt.ctrl_key(),
|
|
meta_key: evt.meta_key(),
|
|
screen_x: evt.screen_x(),
|
|
screen_y: evt.screen_y(),
|
|
shift_key: evt.shift_key(),
|
|
page_x: evt.page_x(),
|
|
page_y: evt.page_y(),
|
|
})
|
|
}
|
|
"pointerdown" | "pointermove" | "pointerup" | "pointercancel" | "gotpointercapture"
|
|
| "lostpointercapture" | "pointerenter" | "pointerleave" | "pointerover" | "pointerout" => {
|
|
let evt: &web_sys::PointerEvent = event.dyn_ref().unwrap();
|
|
Arc::new(PointerData {
|
|
alt_key: evt.alt_key(),
|
|
button: evt.button(),
|
|
buttons: evt.buttons(),
|
|
client_x: evt.client_x(),
|
|
client_y: evt.client_y(),
|
|
ctrl_key: evt.ctrl_key(),
|
|
meta_key: evt.meta_key(),
|
|
page_x: evt.page_x(),
|
|
page_y: evt.page_y(),
|
|
screen_x: evt.screen_x(),
|
|
screen_y: evt.screen_y(),
|
|
shift_key: evt.shift_key(),
|
|
pointer_id: evt.pointer_id(),
|
|
width: evt.width(),
|
|
height: evt.height(),
|
|
pressure: evt.pressure(),
|
|
tangential_pressure: evt.tangential_pressure(),
|
|
tilt_x: evt.tilt_x(),
|
|
tilt_y: evt.tilt_y(),
|
|
twist: evt.twist(),
|
|
pointer_type: evt.pointer_type(),
|
|
is_primary: evt.is_primary(),
|
|
// get_modifier_state: evt.get_modifier_state(),
|
|
})
|
|
}
|
|
"select" => Arc::new(SelectionData {}),
|
|
"touchcancel" | "touchend" | "touchmove" | "touchstart" => {
|
|
let evt: &web_sys::TouchEvent = event.dyn_ref().unwrap();
|
|
Arc::new(TouchData {
|
|
alt_key: evt.alt_key(),
|
|
ctrl_key: evt.ctrl_key(),
|
|
meta_key: evt.meta_key(),
|
|
shift_key: evt.shift_key(),
|
|
})
|
|
}
|
|
"scroll" => Arc::new(()),
|
|
"wheel" => {
|
|
let evt: &web_sys::WheelEvent = event.dyn_ref().unwrap();
|
|
Arc::new(WheelData {
|
|
delta_x: evt.delta_x(),
|
|
delta_y: evt.delta_y(),
|
|
delta_z: evt.delta_z(),
|
|
delta_mode: evt.delta_mode(),
|
|
})
|
|
}
|
|
"animationstart" | "animationend" | "animationiteration" => {
|
|
let evt: &web_sys::AnimationEvent = event.dyn_ref().unwrap();
|
|
Arc::new(AnimationData {
|
|
elapsed_time: evt.elapsed_time(),
|
|
animation_name: evt.animation_name(),
|
|
pseudo_element: evt.pseudo_element(),
|
|
})
|
|
}
|
|
"transitionend" => {
|
|
let evt: &web_sys::TransitionEvent = event.dyn_ref().unwrap();
|
|
Arc::new(TransitionData {
|
|
elapsed_time: evt.elapsed_time(),
|
|
property_name: evt.property_name(),
|
|
pseudo_element: evt.pseudo_element(),
|
|
})
|
|
}
|
|
"abort" | "canplay" | "canplaythrough" | "durationchange" | "emptied" | "encrypted"
|
|
| "ended" | "error" | "loadeddata" | "loadedmetadata" | "loadstart" | "pause" | "play"
|
|
| "playing" | "progress" | "ratechange" | "seeked" | "seeking" | "stalled" | "suspend"
|
|
| "timeupdate" | "volumechange" | "waiting" => Arc::new(MediaData {}),
|
|
"toggle" => Arc::new(ToggleData {}),
|
|
_ => Arc::new(()),
|
|
}
|
|
}
|
|
|
|
/// This function decodes a websys event and produces an EventTrigger
|
|
/// With the websys implementation, we attach a unique key to the nodes
|
|
fn decode_trigger(event: &web_sys::Event) -> anyhow::Result<UserEvent> {
|
|
use anyhow::Context;
|
|
|
|
let target = event
|
|
.target()
|
|
.expect("missing target")
|
|
.dyn_into::<Element>()
|
|
.expect("not a valid element");
|
|
|
|
let typ = event.type_();
|
|
|
|
let element_id = target
|
|
.get_attribute("dioxus-id")
|
|
.context("Could not find element id on event target")?
|
|
.parse()?;
|
|
|
|
Ok(UserEvent {
|
|
name: event_name_from_typ(&typ),
|
|
data: virtual_event_from_websys_event(event.clone()),
|
|
element: Some(ElementId(element_id)),
|
|
scope_id: None,
|
|
priority: dioxus_core::EventPriority::Medium,
|
|
})
|
|
}
|
|
|
|
pub(crate) fn load_document() -> Document {
|
|
web_sys::window()
|
|
.expect("should have access to the Window")
|
|
.document()
|
|
.expect("should have access to the Document")
|
|
}
|
|
|
|
fn event_name_from_typ(typ: &str) -> &'static str {
|
|
match typ {
|
|
"copy" => "copy",
|
|
"cut" => "cut",
|
|
"paste" => "paste",
|
|
"compositionend" => "compositionend",
|
|
"compositionstart" => "compositionstart",
|
|
"compositionupdate" => "compositionupdate",
|
|
"keydown" => "keydown",
|
|
"keypress" => "keypress",
|
|
"keyup" => "keyup",
|
|
"focus" => "focus",
|
|
"blur" => "blur",
|
|
"change" => "change",
|
|
"input" => "input",
|
|
"invalid" => "invalid",
|
|
"reset" => "reset",
|
|
"submit" => "submit",
|
|
"click" => "click",
|
|
"contextmenu" => "contextmenu",
|
|
"doubleclick" => "doubleclick",
|
|
"drag" => "drag",
|
|
"dragend" => "dragend",
|
|
"dragenter" => "dragenter",
|
|
"dragexit" => "dragexit",
|
|
"dragleave" => "dragleave",
|
|
"dragover" => "dragover",
|
|
"dragstart" => "dragstart",
|
|
"drop" => "drop",
|
|
"mousedown" => "mousedown",
|
|
"mouseenter" => "mouseenter",
|
|
"mouseleave" => "mouseleave",
|
|
"mousemove" => "mousemove",
|
|
"mouseout" => "mouseout",
|
|
"mouseover" => "mouseover",
|
|
"mouseup" => "mouseup",
|
|
"pointerdown" => "pointerdown",
|
|
"pointermove" => "pointermove",
|
|
"pointerup" => "pointerup",
|
|
"pointercancel" => "pointercancel",
|
|
"gotpointercapture" => "gotpointercapture",
|
|
"lostpointercapture" => "lostpointercapture",
|
|
"pointerenter" => "pointerenter",
|
|
"pointerleave" => "pointerleave",
|
|
"pointerover" => "pointerover",
|
|
"pointerout" => "pointerout",
|
|
"select" => "select",
|
|
"touchcancel" => "touchcancel",
|
|
"touchend" => "touchend",
|
|
"touchmove" => "touchmove",
|
|
"touchstart" => "touchstart",
|
|
"scroll" => "scroll",
|
|
"wheel" => "wheel",
|
|
"animationstart" => "animationstart",
|
|
"animationend" => "animationend",
|
|
"animationiteration" => "animationiteration",
|
|
"transitionend" => "transitionend",
|
|
"abort" => "abort",
|
|
"canplay" => "canplay",
|
|
"canplaythrough" => "canplaythrough",
|
|
"durationchange" => "durationchange",
|
|
"emptied" => "emptied",
|
|
"encrypted" => "encrypted",
|
|
"ended" => "ended",
|
|
"error" => "error",
|
|
"loadeddata" => "loadeddata",
|
|
"loadedmetadata" => "loadedmetadata",
|
|
"loadstart" => "loadstart",
|
|
"pause" => "pause",
|
|
"play" => "play",
|
|
"playing" => "playing",
|
|
"progress" => "progress",
|
|
"ratechange" => "ratechange",
|
|
"seeked" => "seeked",
|
|
"seeking" => "seeking",
|
|
"stalled" => "stalled",
|
|
"suspend" => "suspend",
|
|
"timeupdate" => "timeupdate",
|
|
"volumechange" => "volumechange",
|
|
"waiting" => "waiting",
|
|
"toggle" => "toggle",
|
|
_ => {
|
|
panic!("unsupported event type")
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//! This module provides a mirror of the VirtualDOM Element Slab using a Vector.
|
|
|
|
use std::ops::{Index, IndexMut};
|
|
use web_sys::Node;
|
|
|
|
pub(crate) struct NodeSlab {
|
|
nodes: Vec<Option<Node>>,
|
|
}
|
|
|
|
impl NodeSlab {
|
|
pub fn new(capacity: usize) -> NodeSlab {
|
|
let nodes = Vec::with_capacity(capacity);
|
|
NodeSlab { nodes }
|
|
}
|
|
}
|
|
impl Index<usize> for NodeSlab {
|
|
type Output = Option<Node>;
|
|
fn index(&self, index: usize) -> &Self::Output {
|
|
&self.nodes[index]
|
|
}
|
|
}
|
|
|
|
impl IndexMut<usize> for NodeSlab {
|
|
fn index_mut(&mut self, index: usize) -> &mut Self::Output {
|
|
if index >= self.nodes.capacity() * 3 {
|
|
panic!("Trying to mutate an element way too far out of bounds");
|
|
}
|
|
|
|
if index + 1 > self.nodes.len() {
|
|
self.nodes.resize_with(index + 1, || None);
|
|
}
|
|
&mut self.nodes[index]
|
|
}
|
|
}
|
|
|
|
|
|
#[derive(Debug, Default)]
|
|
struct Stack {
|
|
list: Vec<Node>,
|
|
}
|
|
|
|
impl Stack {
|
|
#[inline]
|
|
fn with_capacity(cap: usize) -> Self {
|
|
Stack {
|
|
list: Vec::with_capacity(cap),
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn push(&mut self, node: Node) {
|
|
self.list.push(node);
|
|
}
|
|
|
|
#[inline]
|
|
fn pop(&mut self) -> Node {
|
|
self.list.pop().unwrap()
|
|
}
|
|
|
|
fn top(&self) -> &Node {
|
|
match self.list.last() {
|
|
Some(a) => a,
|
|
None => panic!("Called 'top' of an empty stack, make sure to push the root first"),
|
|
}
|
|
}
|
|
}
|