feat(typeahead): Improve typeahead initialization and event handling
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d6661c2ac9
commit
5ca277ee80
2 changed files with 102 additions and 94 deletions
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@ -30,6 +30,8 @@ pub fn App() -> impl IntoView {
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// });
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view! {
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<head>
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<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
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<script src="https://twitter.github.io/typeahead.js/releases/latest/typeahead.bundle.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/corejs-typeahead/1.3.1/typeahead.bundle.min.js"></script>
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</head>
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<Router>
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@ -7,6 +7,8 @@ use gloo_utils::format::JsValueSerdeExt;
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use wasm_bindgen::JsCast;
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use web_sys::HtmlInputElement;
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use leptos::logging::log;
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use std::time::Duration;
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#[component]
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pub fn TypeaheadInput(
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value: String,
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@ -16,11 +18,20 @@ pub fn TypeaheadInput(
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) -> impl IntoView {
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let (is_initialized, set_initialized) = create_signal(false);
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create_effect(move |_| {
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if let (Some(input), false) = (node_ref.get(), is_initialized.get()) {
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spawn_local(async move {
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log!("[INIT] Component mounted");
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let mut retries = 0;
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while retries < 10 {
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if let Some(input) = node_ref.get() {
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log!("[INIT] Input element found");
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let bloodhound = initialize_bloodhound(fetch_suggestions.clone());
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initialize_typeahead(&input, bloodhound, on_select.clone(), node_ref.clone());
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set_initialized.set(true);
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break;
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}
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gloo_timers::future::sleep(Duration::from_millis(100)).await;
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retries += 1;
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}
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});
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@ -30,6 +41,18 @@ pub fn TypeaheadInput(
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class="typeahead"
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prop:value=value
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node_ref=node_ref
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on:focus=move |_| log!("[FOCUS] Name input focused")
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on:blur=move |_| log!("[FOCUS] Name input blurred")
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on:input=move |ev| {
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let value = event_target_value(&ev);
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log!("[INPUT] Value changed: {}", value);
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if let Some(input) = node_ref.get() {
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// Correct DOM element access using JsCast
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let dom_input: &web_sys::HtmlInputElement = &*input;
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let id = dom_input.id();
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let _ = js_sys::eval(&format!("console.log('JS Value:', $('#{}').val())", id));
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}
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}
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/>
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}
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}
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@ -52,10 +75,12 @@ extern "C" {
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fn initialize_bloodhound(fetch: Callback<String, Vec<WikidataSuggestion>>) -> JsValue {
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let bloodhound_options = Object::new();
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// Store the Closure in a variable to prevent premature garbage collection
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let remote_fn = Closure::wrap(Box::new(move |query: String, sync: js_sys::Function| {
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log!("Fetching suggestions for: {}", query);
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// Configure Bloodhound remote with proper parameters
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let remote_fn = Closure::wrap(Box::new(move |query: String, sync: Function| {
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log!("[BLOODHOUND] Fetching suggestions for: {}", query);
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let suggestions = fetch.call(query.clone());
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log!("[BLOODHOUND] Received {} suggestions", suggestions.len());
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let array = Array::new();
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for suggestion in &suggestions {
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let obj = Object::new();
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@ -63,24 +88,34 @@ fn initialize_bloodhound(fetch: Callback<String, Vec<WikidataSuggestion>>) -> Js
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Reflect::set(&obj, &"value".into(), &suggestion.id.clone().into()).unwrap();
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array.push(&obj);
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}
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sync.call1(&JsValue::NULL, &array).unwrap();
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}) as Box<dyn Fn(String, js_sys::Function)>);
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// Configure Bloodhound
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sync.call1(&JsValue::NULL, &array).unwrap();
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}) as Box<dyn Fn(String, Function)>);
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let remote_config = Object::new();
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Reflect::set(&remote_config, &"url".into(), &"".into()).unwrap();
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Reflect::set(&remote_config, &"wildcard".into(), &"%QUERY".into()).unwrap();
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Reflect::set(&remote_config, &"prepare".into(), &remote_fn.as_ref()).unwrap();
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Reflect::set(&remote_config, &"rateLimitWait".into(), &JsValue::from(300)).unwrap();
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Reflect::set(
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&remote_config,
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&"prepare".into(),
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&js_sys::eval(&format!(
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"function(query, callback) {{
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return {}(query, callback);
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}}",
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remote_fn.as_ref().unchecked_ref::<js_sys::Function>().to_string()
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)).unwrap()
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).unwrap();
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Reflect::set(
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&remote_config,
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&"wildcard".into(),
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&JsValue::from_str("%QUERY")
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).unwrap();
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Reflect::set(&bloodhound_options, &"remote".into(), &remote_config).unwrap();
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Reflect::set(&bloodhound_options, &"queryTokenizer".into(), &JsValue::from("whitespace")).unwrap();
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Reflect::set(&bloodhound_options, &"datumTokenizer".into(), &JsValue::from("whitespace")).unwrap();
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Reflect::set(&bloodhound_options, &"datumTokenizer".into(), &JsValue::from_str("whitespace")).unwrap();
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Reflect::set(&bloodhound_options, &"queryTokenizer".into(), &JsValue::from_str("whitespace")).unwrap();
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let bloodhound = Bloodhound::new(&bloodhound_options.into());
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bloodhound.initialize(true);
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// Prevent Closure from being dropped
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remote_fn.forget();
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bloodhound.into()
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@ -92,92 +127,63 @@ fn initialize_typeahead(
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on_select: Callback<WikidataSuggestion>,
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node_ref: NodeRef<Input>,
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) {
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// input event handler for direct typing
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let node_ref_clone = node_ref.clone();
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let input_handler = Closure::wrap(Box::new(move |_event: web_sys::Event| {
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if let Some(input) = node_ref_clone.get() {
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let value = input.value();
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log!("Input updated: {}", value);
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// Create synthetic change event for Leptos
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let event = web_sys::CustomEvent::new("input").unwrap();
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input.dispatch_event(&event).unwrap();
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}
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}) as Box<dyn FnMut(_)>);
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log!("[TYPEAHEAD] Initializing for input: {}", input.id());
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let input_id = format!("typeahead-{}", uuid::Uuid::new_v4());
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input.set_id(&input_id);
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input.add_event_listener_with_callback(
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"input",
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input_handler.as_ref().unchecked_ref()
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).unwrap();
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input_handler.forget();
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let typeahead_options = Object::new();
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Reflect::set(&typeahead_options, &"hint".into(), &JsValue::TRUE).unwrap();
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Reflect::set(&typeahead_options, &"highlight".into(), &JsValue::TRUE).unwrap();
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Reflect::set(&typeahead_options, &"minLength".into(), &JsValue::from(1)).unwrap();
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// Bloodhound remote configuration
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let bloodhound_ref = bloodhound.unchecked_ref::<Bloodhound>();
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let remote_config = Object::new();
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Reflect::set(&remote_config, &"prepare".into(), &JsValue::from_str("function(q) { return { q: q }; }")).unwrap();
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Reflect::set(&remote_config, &"transform".into(), &js_sys::Function::new_with_args("response", "return response;")).unwrap();
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// Update dataset configuration
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let dataset = Object::new();
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let bloodhound_ref = bloodhound.unchecked_ref::<Bloodhound>();
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Reflect::set(&dataset, &"source".into(), &bloodhound_ref.tt_adapter()).unwrap();
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Reflect::set(&dataset, &"display".into(), &"label".into()).unwrap();
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Reflect::set(&dataset, &"limit".into(), &JsValue::from(10)).unwrap();
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// Create proper templates
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let templates = Object::new();
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Reflect::set(&templates, &"suggestion".into(), &js_sys::eval(r#"
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function(data) {
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return '<div class="suggestion-item">' +
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'<strong>' + data.label + '</strong>' +
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(data.description ? '<br><small>' + data.description + '</small>' : '') +
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'</div>';
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}
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"#).unwrap()).unwrap();
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// Create and register the closure
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let closure = Closure::wrap(Box::new(move |_event: web_sys::Event, suggestion: JsValue| {
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log!("[TYPEAHEAD] Selection made");
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let data: WikidataSuggestion = suggestion.into_serde().unwrap();
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on_select.call(data.clone());
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Reflect::set(&dataset, &"templates".into(), &templates).unwrap();
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if let Some(input) = node_ref.get() {
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input.set_value(&data.label);
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}
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}) as Box<dyn FnMut(web_sys::Event, JsValue)>);
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// Register the closure in the JS global scope
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let handler_name = format!("handler_{}", input_id);
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let handler_name_global = handler_name.clone();
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let global = js_sys::global();
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Reflect::set(
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&global,
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&handler_name_global.into(),
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&closure.as_ref()
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).unwrap();
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// Typeahead initialization using jQuery
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let init_script = format!(
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r#"(function() {{
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$('#{}').typeahead({}, {});
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}})"#,
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input.id(),
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JSON::stringify(&typeahead_options).unwrap(),
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JSON::stringify(&dataset).unwrap()
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r#"
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(function() {{
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console.log('[TYPEAHEAD] Initializing for #{id}');
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$('#{id}').typeahead(
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{{
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hint: true,
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highlight: true,
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minLength: 1
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}},
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{dataset}
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).on('typeahead:select', function(ev, suggestion) {{
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console.log('[TYPEAHEAD] Select event triggered');
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{handler}(ev, suggestion);
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}});
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console.log('[TYPEAHEAD] Initialization complete for #{id}');
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}})();
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"#,
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id = input_id,
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dataset = JSON::stringify(&dataset).unwrap(),
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handler = handler_name
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);
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log!("[TYPEAHEAD] Init script: {}", init_script);
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let _ = js_sys::eval(&init_script).unwrap();
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// Handle selection events
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let closure = Closure::wrap(Box::new(move |event: web_sys::Event| {
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if let Some(selected) = event.target() {
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let js_value = selected.unchecked_into::<JsValue>();
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let data: WikidataSuggestion = js_sys::JSON::parse(
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&js_sys::JSON::stringify(&js_value)
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.unwrap()
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.as_string()
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.unwrap()
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.as_str()
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).unwrap()
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.into_serde()
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.unwrap();
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let data_clone = data.clone();
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on_select.call(data);
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// Explicitly update the input value
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if let Some(input) = node_ref.get() {
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input.set_value(&data_clone.label);
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}
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}
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}) as Box<dyn FnMut(_)>);
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input.add_event_listener_with_callback(
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"typeahead:select",
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closure.as_ref().unchecked_ref()
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).unwrap();
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closure.forget();
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}
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