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use super::*;
/// A conditional rendering demo page.
///
/// # Returns
///
/// - `VirtualNode` - The conditional demo page virtual DOM tree.
#[component]
pub(crate) fn page_conditional(node: VirtualNode<PageConditionalProps>) -> VirtualNode {
let PageConditionalProps: PageConditionalProps = node.try_get_props().unwrap_or_default();
let show_details: Signal<bool> = App::use_signal(|| false);
let user_type: Signal<ConditionalUserType> = App::use_signal(ConditionalUserType::default);
let tab: Signal<ConditionalTab> = App::use_signal(ConditionalTab::default);
let display_name: Signal<String> = App::use_signal(|| "".to_string());
html! {
div {
class: c_page_container()
euv_header {
icon: "🔀"
title: "Conditional Rendering"
subtitle: "Toggle element visibility with if expressions, render different content based on role with match, and implement tab switching — all driven by Signal state."
}
euv_card {
title: "Toggle Content"
div {
class: c_button_controls()
euv_button {
variant: if { show_details } {
EuvButtonVariant::Outline
} else {
EuvButtonVariant::Primary
}
label: "Toggle"
onclick: UseEuvInput::use_toggle(show_details)
}
}
if { show_details } {
div {
class: c_toggle_content()
h4 {
class: c_toggle_title()
"Hidden Details"
}
p {
class: c_demo_text()
"This content is conditionally rendered using an if expression bound to a Signal. When the Signal is false, the node is removed from the Virtual DOM entirely."
}
p {
class: c_demo_text_muted()
"Use this pattern for modals, accordions, feature flags, permission-based UI, and any scenario where content should appear or disappear reactively."
}
}
}
}
euv_card {
title: "Role-Based Rendering"
div {
class: c_role_button_row()
euv_button {
variant: if { user_type.get() == ConditionalUserType::Guest } {
EuvButtonVariant::Primary
} else {
EuvButtonVariant::Outline
}
label: ConditionalUserType::Guest.label()
onclick: user_type_on_select(user_type, ConditionalUserType::Guest)
}
euv_button {
variant: if { user_type.get() == ConditionalUserType::User } {
EuvButtonVariant::Primary
} else {
EuvButtonVariant::Outline
}
label: ConditionalUserType::User.label()
onclick: user_type_on_select(user_type, ConditionalUserType::User)
}
euv_button {
variant: if { user_type.get() == ConditionalUserType::Admin } {
EuvButtonVariant::Primary
} else {
EuvButtonVariant::Outline
}
label: ConditionalUserType::Admin.label()
onclick: user_type_on_select(user_type, ConditionalUserType::Admin)
}
}
match { user_type } {
ConditionalUserType::Guest => {
div {
p {
class: c_role_guest_text()
"Welcome, guest! Please sign in to access more features."
}
}
}
ConditionalUserType::User => {
div {
p {
class: c_role_user_text()
"Hello, user! You have standard access."
}
}
}
_ => {
div {
p {
class: c_role_admin_text()
"Welcome, administrator! You have full access."
}
}
}
}
}
euv_card {
title: "Tab Switching"
div {
class: c_tab_bar()
div {
class: if { tab.get() == ConditionalTab::Info } {
c_tab_item_active()
} else {
c_tab_item_inactive()
}
onclick: tab_on_select(tab, ConditionalTab::Info)
ConditionalTab::Info.to_string()
}
div {
class: if { tab.get() == ConditionalTab::Settings } {
c_tab_item_active()
} else {
c_tab_item_inactive()
}
onclick: tab_on_select(tab, ConditionalTab::Settings)
ConditionalTab::Settings.to_string()
}
div {
class: if { tab.get() == ConditionalTab::About } {
c_tab_item_active()
} else {
c_tab_item_inactive()
}
onclick: tab_on_select(tab, ConditionalTab::About)
ConditionalTab::About.to_string()
}
}
match { tab } {
ConditionalTab::Info => {
div {
class: c_tab_content()
p {
class: c_tab_text()
"This is the information tab."
}
p {
class: c_tab_text_muted()
"Here you can find general details about the application."
}
}
}
ConditionalTab::Settings => {
div {
class: c_tab_content()
p {
class: c_tab_text_input()
"This is the settings tab."
}
euv_input {
id: SETTINGS_DISPLAY_NAME_ID
label: "Display Name"
placeholder: SETTINGS_DISPLAY_NAME_PLACEHOLDER
value: display_name
autocomplete: CONDITIONAL_AUTOCOMPLETE_NAME
}
}
}
_ => {
div {
class: c_tab_content()
p {
class: c_tab_text()
"This is the about tab."
}
p {
class: c_tab_text_muted()
"euv is a declarative UI framework for Rust."
}
}
}
}
}
}
}
}