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use std::collections::HashMap;
use std::fmt;
use std::ops::Deref;
use web_sys::{self, Element, Node};
pub use self::event::EventAttribFn;
pub use self::iterable_nodes::*;
pub use self::velement::*;
pub use self::vtext::*;
pub mod event;
pub mod test_utils;
mod create_element;
mod iterable_nodes;
mod velement;
mod vtext;
#[derive(PartialEq)]
pub enum VirtualNode {
Element(VElement),
Text(VText),
}
impl VirtualNode {
pub fn element<S>(tag: S) -> Self
where
S: Into<String>,
{
VirtualNode::Element(VElement::new(tag))
}
pub fn text<S>(text: S) -> Self
where
S: Into<String>,
{
VirtualNode::Text(VText::new(text.into()))
}
pub fn as_velement_ref(&self) -> Option<&VElement> {
match self {
VirtualNode::Element(ref element_node) => Some(element_node),
_ => None,
}
}
pub fn as_velement_mut(&mut self) -> Option<&mut VElement> {
match self {
VirtualNode::Element(ref mut element_node) => Some(element_node),
_ => None,
}
}
pub fn as_vtext_ref(&self) -> Option<&VText> {
match self {
VirtualNode::Text(ref text_node) => Some(text_node),
_ => None,
}
}
pub fn as_vtext_mut(&mut self) -> Option<&mut VText> {
match self {
VirtualNode::Text(ref mut text_node) => Some(text_node),
_ => None,
}
}
pub fn create_dom_node(&self) -> CreatedNode<Node> {
match self {
VirtualNode::Text(text_node) => {
CreatedNode::without_closures(text_node.create_text_node())
}
VirtualNode::Element(element_node) => element_node.create_element_node().into(),
}
}
pub fn insert_space_before_text(&mut self) {
match self {
VirtualNode::Text(text_node) => {
text_node.text = " ".to_string() + &text_node.text;
}
_ => {}
}
}
pub fn insert_space_after_text(&mut self) {
match self {
VirtualNode::Text(text_node) => {
text_node.text += " ";
}
_ => {}
}
}
}
pub struct CreatedNode<T> {
pub node: T,
pub closures: HashMap<u32, Vec<EventAttribFn>>,
}
impl<T> CreatedNode<T> {
pub fn without_closures<N: Into<T>>(node: N) -> Self {
CreatedNode {
node: node.into(),
closures: std::collections::HashMap::with_capacity(0),
}
}
}
impl<T> Deref for CreatedNode<T> {
type Target = T;
fn deref(&self) -> &Self::Target {
&self.node
}
}
impl From<CreatedNode<Element>> for CreatedNode<Node> {
fn from(other: CreatedNode<Element>) -> CreatedNode<Node> {
CreatedNode {
node: other.node.into(),
closures: other.closures,
}
}
}
pub trait View {
fn render(&self) -> VirtualNode;
}
impl<V> From<&V> for VirtualNode
where
V: View,
{
fn from(v: &V) -> Self {
v.render()
}
}
impl From<VText> for VirtualNode {
fn from(other: VText) -> Self {
VirtualNode::Text(other)
}
}
impl From<VElement> for VirtualNode {
fn from(other: VElement) -> Self {
VirtualNode::Element(other)
}
}
impl From<&str> for VirtualNode {
fn from(other: &str) -> Self {
VirtualNode::text(other)
}
}
impl From<String> for VirtualNode {
fn from(other: String) -> Self {
VirtualNode::text(other.as_str())
}
}
impl IntoIterator for VirtualNode {
type Item = VirtualNode;
type IntoIter = ::std::vec::IntoIter<VirtualNode>;
fn into_iter(self) -> Self::IntoIter {
vec![self].into_iter()
}
}
impl Into<::std::vec::IntoIter<VirtualNode>> for VirtualNode {
fn into(self) -> ::std::vec::IntoIter<VirtualNode> {
self.into_iter()
}
}
impl fmt::Debug for VirtualNode {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
VirtualNode::Element(e) => write!(f, "Node::{:?}", e),
VirtualNode::Text(t) => write!(f, "Node::{:?}", t),
}
}
}
impl fmt::Display for VirtualNode {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
VirtualNode::Element(element) => write!(f, "{}", element),
VirtualNode::Text(text) => write!(f, "{}", text),
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn self_closing_tag_to_string() {
let node = VirtualNode::element("br");
assert_eq!(&node.to_string(), "<br>");
}
#[test]
fn to_string() {
let mut node = VirtualNode::Element(VElement::new("div"));
node.as_velement_mut()
.unwrap()
.attrs
.insert("id".into(), "some-id".into());
let mut child = VirtualNode::Element(VElement::new("span"));
let text = VirtualNode::Text(VText::new("Hello world"));
child.as_velement_mut().unwrap().children.push(text);
node.as_velement_mut().unwrap().children.push(child);
let expected = r#"<div id="some-id"><span>Hello world</span></div>"#;
assert_eq!(node.to_string(), expected);
}
#[test]
fn boolean_attribute_true_shown() {
let mut button = VElement::new("button");
button.attrs.insert("disabled".into(), true.into());
let expected = "<button disabled></button>";
let button = VirtualNode::Element(button).to_string();
assert_eq!(button.to_string(), expected);
}
#[test]
fn boolean_attribute_false_ignored() {
let mut button = VElement::new("button");
button.attrs.insert("disabled".into(), false.into());
let expected = "<button></button>";
let button = VirtualNode::Element(button).to_string();
assert_eq!(button.to_string(), expected);
}
}