132 lines
4.7 KiB
HTML
132 lines
4.7 KiB
HTML
<link rel="prefetch" href="{{root}}search-index.json" />
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<link rel="prefetch" href="{{root}}search-metadata.json" />
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<div id="search_placeholder">
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<p>Search is loading. If you cannot see any results after a few seconds, check that JavaScript is enabled in your browser.</p>
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</div>
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<div id="search_noquery">
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<p>Enter a few words into the box above to start the search.</p>
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<p>You may use <code>*</code> for wildcard search, and prefixes <code>+</code> for required terms and <code>-</code> for unwanted terms.</p>
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<p><strong>Example:</strong> <code>laboratory noteb* +red -code</code> will find cards about <em>laboratory notebooks</em> that must also describe something <em>red</em>, but do not contain any mention of <em>code</em>.</p>
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</div>
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<div id="search_success" style="display: none">
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<h1>Search results</h1>
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<ul id="search_results" class="search-results">
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</ul>
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</div>
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<div id="search_fail" style="display: none">
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<h1>No results found</h1>
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<p>You may try a simpler search query, or find the page <a href="{{root}}tag">by the categories</a>.</p>
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</div>
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<div id="search_error" style="display: none">
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<h1>Search error</h1>
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<p>Search failed; this is likely caused by a badly formatted query string. Try a different query.</p>
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<p>The error description is: <span style="color: red" id="search_error_text"></span></p>
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</div>
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<script src="{{root}}static/lunr.min.js"></script>
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<script>
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var el_query = document.getElementById('search_query');
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var el_placeholder = document.getElementById('search_placeholder');
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var el_noquery = document.getElementById('search_noquery');
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var el_success = document.getElementById('search_success');
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var el_fail = document.getElementById('search_fail');
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var el_error = document.getElementById('search_error');
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var el_error_text = document.getElementById('search_error_text');
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var el_results = document.getElementById('search_results');
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function run_search(q) {
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el_placeholder.style.display = 'none';
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if(q.length === 0) {
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el_noquery.style.display = 'block';
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el_success.style.display = 'none';
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el_fail.style.display = 'none';
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el_error.style.display = 'none';
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return;
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}
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var results = []
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try {
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results = window.search_index.search(q)
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} catch (err) {
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console.log("search error: " + err);
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el_error_text.innerHTML = '';
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el_error_text.appendChild(document.createTextNode(err.message));
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el_noquery.style.display = 'none';
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el_success.style.display = 'none';
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el_fail.style.display = 'none';
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el_error.style.display = 'block';
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return;
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}
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el_results.innerHTML = ''
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for(var ri=0; ri<results.length; ++ri) {
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if (ri>=100) {
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var out = document.createElement("p")
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out.innerHTML = "Displaying only 100 top matches. Try searching for more specific terms to refine the search."
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el_results.appendChild(out)
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break;
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}
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const r = results[ri]
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const m = window.search_metadata[r.ref]
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var out = document.createElement("li")
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var a = document.createElement("a")
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a.className = "search-result"
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a.appendChild(document.createTextNode(m.title))
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a.href = r.ref
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out.appendChild(a)
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for(var ti=0; ti<m.tags.length; ++ti) {
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t = document.createElement("div")
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t.className = "search-tag"
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t.appendChild(document.createTextNode(m.tags[ti].join(" » ")));
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out.appendChild(t);
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}
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el_results.appendChild(out)
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}
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if(results.length === 0) {
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el_noquery.style.display = 'none';
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el_success.style.display = 'none';
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el_fail.style.display = 'block';
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el_error.style.display = 'none';
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} else {
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el_noquery.style.display = 'none';
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el_success.style.display = 'block';
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el_fail.style.display = 'none';
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el_error.style.display = 'none';
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}
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}
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function handle_search_input(ev) {
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run_search(ev.target.value)
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window.history.pushState("", "",
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window.location.pathname + '?search_query='+encodeURIComponent(ev.target.value)
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)
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// This reinstalls the listener only _after_ the original event is done,
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// preventing infinite events and CPU boils if a cat steps on the keyboard.
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el_query.addEventListener('input', handle_search_input)
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}
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Promise.all([
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fetch('{{root}}search-index.json').then(response => response.text()).then(text => {
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window.search_index = lunr.Index.load(JSON.parse(text))
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}),
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fetch('{{root}}search-metadata.json').then(response => response.text()).then(text => {
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window.search_metadata = JSON.parse(text)
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})
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]).then(() => {
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var search_term = (new URLSearchParams(window.location.search)).get('search_query') || "";
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el_query.value = search_term
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handle_search_input({target: {value: search_term}})
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})
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</script>
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