57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
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const autocomplete_query_delay_ms = 60;
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class AutocompleteText {
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constructor(text_id, dropdown_id, query_function)
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{
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this.text_id = text_id;
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this.dropdown_id = dropdown_id;
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this.query_callback = query_function.bind(this);
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document.getElementById(text_id).addEventListener("keyup", this.ac_delay(function(event) {
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this.query_callback(document.getElementById(this.text_id).value, this);
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}, autocomplete_query_delay_ms).bind(this));
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}
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show_results(results) {
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var ul = document.getElementById(this.dropdown_id);
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ul.innerHTML = '';
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for (var i = 0; i < results.length; i++) {
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var node = document.createElement('li');
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node.setAttribute('class', 'dropdown-item');
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node.appendChild(document.createTextNode(results[i]));
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ul.appendChild(node);
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node.addEventListener('click',
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(e) => {
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var element = e.target;
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var text_box = document.getElementById(this.text_id);
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text_box.value = element.innerHTML;
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var dropdown = bootstrap.Dropdown.getOrCreateInstance(text_box);
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dropdown.hide();
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}
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);
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}
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if (results.length == 0) {
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var node = document.createElement('li');
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node.setAttribute('class', 'dropdown-item text-danger');
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node.appendChild(document.createTextNode('No results'));
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ul.appendChild(node);
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}
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var dropdown = bootstrap.Dropdown.getOrCreateInstance(document.getElementById(this.text_id));
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dropdown.show();
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}
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ac_delay(callback, ms) {
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var timer = 0;
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return function() {
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var context = this, args = arguments;
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clearTimeout(timer);
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timer = setTimeout(function() {
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callback.apply(context, args);
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}, ms || 0);
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};
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}
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}
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