use crate::*;
/// Visual equality comparison for attribute values.
///
/// Compares values by their visual output rather than identity. `Signal`
/// values are compared by their current resolved string, `Event` values
/// are always considered equal (re-binding is handled by the handler
/// registry), and `CssClass` values are compared by class name.
impl PartialEq for AttributeValue {
/// Compares two attribute values for visual equality.
///
/// # Arguments
///
/// - `&Self` - The first attribute value.
/// - `&Self` - The second attribute value.
///
/// # Returns
///
/// - `bool` - `true` if the values are visually equal.
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(AttributeValue::Text(a_val), AttributeValue::Text(b_val)) => a_val == b_val,
(AttributeValue::Signal(a_sig), AttributeValue::Signal(b_sig)) => {
a_sig.get() == b_sig.get()
}
(AttributeValue::Signal(a_sig), AttributeValue::Text(b_val)) => a_sig.get() == *b_val,
(AttributeValue::Text(a_val), AttributeValue::Signal(b_sig)) => *a_val == b_sig.get(),
(AttributeValue::Event(_), AttributeValue::Event(_)) => true,
(AttributeValue::Css(a_css), AttributeValue::Css(b_css)) => {
a_css.get_name() == b_css.get_name()
}
(AttributeValue::Dynamic(a_dyn), AttributeValue::Dynamic(b_dyn)) => a_dyn == b_dyn,
_ => false,
}
}
}
/// Visual equality comparison for attribute entries.
///
/// Two attribute entries are equal when their names match and their values
/// are visually equal as defined by `AttributeValue::eq`.
impl PartialEq for AttributeEntry {
/// Compares two attribute entries for visual equality.
///
/// # Arguments
///
/// - `&Self` - The first attribute entry.
/// - `&Self` - The second attribute entry.
///
/// # Returns
///
/// - `bool` - `true` if both names and values match.
fn eq(&self, other: &Self) -> bool {
self.get_name() == other.get_name() && self.get_value() == other.get_value()
}
}
/// Visual equality comparison for CSS classes.
///
/// Two CSS classes are considered equal when their class names match,
/// since the name uniquely identifies the visual style rule.
impl PartialEq for CssClass {
/// Compares two CSS classes by name.
///
/// # Arguments
///
/// - `&Self` - The first CSS class.
/// - `&Self` - The second CSS class.
///
/// # Returns
///
/// - `bool` - `true` if the class names match.
fn eq(&self, other: &Self) -> bool {
self.get_name() == other.get_name()
}
}
/// Implementation of style CSS serialization.
impl Style {
/// Adds a style property.
///
/// Property names are automatically converted from snake_case to kebab-case
/// (e.g., `flex_direction` becomes `flex-direction`).
///
/// # Arguments
///
/// - `N` - The property name (snake_case will be converted to kebab-case).
/// - `V` - The property value.
///
/// # Returns
///
/// - `Self` - This style with the property added.
pub fn property<N, V>(mut self, name: N, value: V) -> Self
where
N: AsRef<str>,
V: AsRef<str>,
{
self.get_mut_properties().push(StyleProperty::new(
name.as_ref().replace('_', "-"),
value.as_ref().to_string(),
));
self
}
/// Converts the style to a CSS string.
///
/// # Returns
///
/// - `String` - The CSS string representation.
pub fn to_css_string(&self) -> String {
self.get_properties()
.iter()
.map(|style: &StyleProperty| format!("{}: {};", style.get_name(), style.get_value()))
.collect::<Vec<String>>()
.join(" ")
}
/// Builds a CSS style string from an array of key-value pairs.
///
/// This function is used by the `html!` macro to convert static `style:`
/// attributes into a CSS string without allocating intermediate `Style`
/// and `Vec<StyleProperty>` objects. Keys are converted from snake_case
/// to kebab-case automatically.
///
/// # Arguments
///
/// - `&[(&str, &str)]` - An array of CSS property name-value pairs.
///
/// # Returns
///
/// - `String` - The CSS string (e.g., `"margin: 0 auto; max-width: 800px;"`).
pub fn create_style_string(props: &[(&str, &str)]) -> String {
let mut result: String = String::new();
for (key, value) in props {
if !result.is_empty() {
result.push(' ');
}
result.push_str(&key.replace('_', "-"));
result.push_str(": ");
result.push_str(value);
result.push(';');
}
result
}
}
/// Provides a default empty style.
impl Default for Style {
/// Returns a default `Style` with no properties.
///
/// # Returns
///
/// - `Self` - An empty style.
fn default() -> Self {
Self::new(Vec::new())
}
}
/// Implementation of CssClass construction and style injection.
impl CssClass {
/// Creates a new CSS class with the given name and style declarations.
///
/// Automatically injects the styles into the DOM upon creation.
///
/// # Arguments
///
/// - `String` - The class name.
/// - `String` - The CSS style declarations.
///
/// # Returns
///
/// - `Self` - A new CSS class with injected styles.
pub fn new(name: String, style: String) -> Self {
let mut css_class: CssClass = CssClass::default();
css_class.set_name(name);
css_class.set_style(style);
css_class.inject_style();
css_class
}
/// Injects this class's styles into the DOM if not already present.
///
/// Creates a `<style>` element with id `euv-css-injected` on first call,
/// then appends the class rule. Subsequent calls for the same class name
/// are no-ops. On first creation, also injects global CSS keyframes
/// required by built-in animations.
///
/// # Panics
///
/// Panics if `window()` or `document()` is unavailable on the current platform.
pub fn inject_style(&self) {
#[cfg(target_arch = "wasm32")]
{
let style_id: &str = "euv-css-injected";
let document: Document = window()
.expect("no global window exists")
.document()
.expect("no document exists");
let style_element: HtmlStyleElement = match document.get_element_by_id(style_id) {
Some(el) => el.dyn_into::<HtmlStyleElement>().unwrap(),
None => {
let el: HtmlStyleElement = document
.create_element("style")
.unwrap()
.dyn_into::<HtmlStyleElement>()
.unwrap();
el.set_id(style_id);
let keyframes: &str = "@keyframes euv-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } } @keyframes euv-fade-in { from { opacity: 0; } to { opacity: 1; } } @keyframes euv-scale-in { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } } @keyframes euv-pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.2); } } @keyframes euv-slide-up { from { transform: translateY(100%); } to { transform: translateY(0); } } @keyframes euv-slide-left { from { transform: translateX(-100%); } to { transform: translateX(0); } } @keyframes euv-fade-in-up { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }";
let global: &str = "html, body, #app { height: 100%; margin: 0; padding: 0; overflow: hidden; } * { -webkit-tap-highlight-color: transparent; }";
let media_queries: &str = "@media (max-width: 767px) { .c_app_nav { display: none; } .c_app_main { padding: 20px 16px; max-width: 100%; } .c_page_title { font-size: 22px; } .c_page_subtitle { font-size: 14px; } .c_card { padding: 16px; margin: 12px 0; border-radius: 10px; } .c_card_title { font-size: 16px; } .c_form_grid { grid-template-columns: 1fr; } .c_browser_api_row { grid-template-columns: 1fr; } .c_modal_content { max-width: 100%; width: calc(100% - 32px); border-radius: 16px 16px 0 0; position: fixed; bottom: 0; left: 16px; height: 80vh; animation: euv-slide-up 0.25s ease; } .c_modal_overlay { align-items: flex-end; } .c_event_stats { gap: 12px; flex-wrap: wrap; } .c_event_section_row { gap: 12px; flex-wrap: wrap; } .c_event_section_col { min-width: 100%; } .c_counter_value { font-size: 20px; } .c_timer_value { font-size: 36px; } .c_not_found_code { font-size: 56px; } .c_not_found_container { padding: 40px 20px; } .c_list_input_row { flex-direction: column; } .c_vconsole_button { bottom: 16px; right: 16px; width: 44px; height: 44px; border-radius: 12px; } .c_tab_bar { flex-wrap: wrap; } .c_primary_button { padding: 10px 18px; font-size: 14px; } .c_badge { padding: 4px 10px; font-size: 11px; } .c_badge_outline { padding: 4px 10px; font-size: 11px; } .c_browser_info_grid { grid-template-columns: 1fr; } .c_anim_spin { font-size: 36px; } .c_anim_spin_stopped { font-size: 36px; } .c_anim_pulse { font-size: 36px; } .c_anim_pulse_stopped { font-size: 36px; } }";
el.set_inner_text(&format!("{} {} {}", global, keyframes, media_queries));
document.head().unwrap().append_child(&el).unwrap();
el
}
};
let existing_css: String = style_element.inner_text();
let class_rule: String = format!(".{} {{ {} }}", self.get_name(), self.get_style());
if !existing_css.contains(&class_rule) {
let new_css: String = if existing_css.is_empty() {
class_rule
} else {
format!("{}\n{}", existing_css, class_rule)
};
style_element.set_inner_text(&new_css);
}
}
}
}
/// Displays the CSS class name.
///
/// This enables `format!("{}", css_class)` to produce the class name string,
/// which is required for reactive `if` conditions in `class:` attributes.
impl std::fmt::Display for CssClass {
/// Formats the CSS class as its name string.
///
/// # Arguments
///
/// - `&mut Formatter` - The formatter.
///
/// # Returns
///
/// - `std::fmt::Result` - The formatting result.
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.get_name())
}
}