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Commit 16628f2b authored by Silvio Giebl's avatar Silvio Giebl
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Improved search responsiveness for many results

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assets/js/just-the-docs.js
+ 155
− 136
View file @ 16628f2b
......@@ -118,6 +118,7 @@ function searchLoaded(index, docs) {
var searchResults = document.getElementById('search-results');
var mainHeader = document.getElementById('main-header');
var currentInput;
var currentSearchIndex = 0;
function showSearch() {
document.documentElement.classList.add('search-active');
......@@ -128,6 +129,8 @@ function searchLoaded(index, docs) {
}
function update() {
currentSearchIndex++;
var input = searchInput.value;
if (input === '') {
hideSearch();
......@@ -180,161 +183,177 @@ function searchLoaded(index, docs) {
resultsList.classList.add('search-results-list');
searchResults.appendChild(resultsList);
for (var i in results) {
var result = results[i];
var doc = docs[result.ref];
var resultsListItem = document.createElement('li');
resultsListItem.classList.add('search-results-list-item');
resultsList.appendChild(resultsListItem);
var resultLink = document.createElement('a');
resultLink.classList.add('search-result');
resultLink.setAttribute('href', doc.url);
resultsListItem.appendChild(resultLink);
var resultTitle = document.createElement('div');
resultTitle.classList.add('search-result-title');
resultLink.appendChild(resultTitle);
var resultDoc = document.createElement('div');
resultDoc.classList.add('search-result-doc');
resultDoc.innerHTML = '<svg viewBox="0 0 24 24" class="search-result-icon"><use xlink:href="#svg-doc"></use></svg>';
resultTitle.appendChild(resultDoc);
var resultDocTitle = document.createElement('div');
resultDocTitle.classList.add('search-result-doc-title');
resultDocTitle.innerHTML = doc.doc;
resultDoc.appendChild(resultDocTitle);
var resultDocOrSection = resultDocTitle;
if (doc.doc != doc.title) {
resultDoc.classList.add('search-result-doc-parent');
var resultSection = document.createElement('div');
resultSection.classList.add('search-result-section');
resultSection.innerHTML = doc.title;
resultTitle.appendChild(resultSection);
resultDocOrSection = resultSection;
addResults(resultsList, results, 0, 10, 100, currentSearchIndex);
}
function addResults(resultsList, results, start, batchSize, batchMillis, searchIndex) {
if (searchIndex != currentSearchIndex) {
return;
}
for (var i = start; i < (start + batchSize); i++) {
if (i == results.length) {
return;
}
addResult(resultsList, results[i]);
}
setTimeout(function() {
addResults(resultsList, results, start + batchSize, batchSize, batchMillis, searchIndex);
}, batchMillis);
}
var metadata = result.matchData.metadata;
var titlePositions = [];
var contentPositions = [];
for (var j in metadata) {
var meta = metadata[j];
if (meta.title) {
var positions = meta.title.position;
for (var k in positions) {
titlePositions.push(positions[k]);
}
function addResult(resultsList, result) {
var doc = docs[result.ref];
var resultsListItem = document.createElement('li');
resultsListItem.classList.add('search-results-list-item');
resultsList.appendChild(resultsListItem);
var resultLink = document.createElement('a');
resultLink.classList.add('search-result');
resultLink.setAttribute('href', doc.url);
resultsListItem.appendChild(resultLink);
var resultTitle = document.createElement('div');
resultTitle.classList.add('search-result-title');
resultLink.appendChild(resultTitle);
var resultDoc = document.createElement('div');
resultDoc.classList.add('search-result-doc');
resultDoc.innerHTML = '<svg viewBox="0 0 24 24" class="search-result-icon"><use xlink:href="#svg-doc"></use></svg>';
resultTitle.appendChild(resultDoc);
var resultDocTitle = document.createElement('div');
resultDocTitle.classList.add('search-result-doc-title');
resultDocTitle.innerHTML = doc.doc;
resultDoc.appendChild(resultDocTitle);
var resultDocOrSection = resultDocTitle;
if (doc.doc != doc.title) {
resultDoc.classList.add('search-result-doc-parent');
var resultSection = document.createElement('div');
resultSection.classList.add('search-result-section');
resultSection.innerHTML = doc.title;
resultTitle.appendChild(resultSection);
resultDocOrSection = resultSection;
}
var metadata = result.matchData.metadata;
var titlePositions = [];
var contentPositions = [];
for (var j in metadata) {
var meta = metadata[j];
if (meta.title) {
var positions = meta.title.position;
for (var k in positions) {
titlePositions.push(positions[k]);
}
if (meta.content) {
var positions = meta.content.position;
for (var k in positions) {
var position = positions[k];
var previewStart = position[0];
var previewEnd = position[0] + position[1];
var ellipsesBefore = true;
var ellipsesAfter = true;
for (var k = 0; k < {{ site.search.preview_words_before | default: 5 }}; k++) {
var nextSpace = doc.content.lastIndexOf(' ', previewStart - 2);
var nextDot = doc.content.lastIndexOf('. ', previewStart - 2);
if ((nextDot >= 0) && (nextDot > nextSpace)) {
previewStart = nextDot + 1;
ellipsesBefore = false;
break;
}
if (nextSpace < 0) {
previewStart = 0;
ellipsesBefore = false;
break;
}
previewStart = nextSpace + 1;
}
if (meta.content) {
var positions = meta.content.position;
for (var k in positions) {
var position = positions[k];
var previewStart = position[0];
var previewEnd = position[0] + position[1];
var ellipsesBefore = true;
var ellipsesAfter = true;
for (var k = 0; k < {{ site.search.preview_words_before | default: 5 }}; k++) {
var nextSpace = doc.content.lastIndexOf(' ', previewStart - 2);
var nextDot = doc.content.lastIndexOf('. ', previewStart - 2);
if ((nextDot >= 0) && (nextDot > nextSpace)) {
previewStart = nextDot + 1;
ellipsesBefore = false;
break;
}
if (nextSpace < 0) {
previewStart = 0;
ellipsesBefore = false;
break;
}
previewStart = nextSpace + 1;
}
for (var k = 0; k < {{ site.search.preview_words_after | default: 10 }}; k++) {
var nextSpace = doc.content.indexOf(' ', previewEnd + 1);
var nextDot = doc.content.indexOf('. ', previewEnd + 1);
if ((nextDot >= 0) && (nextDot < nextSpace)) {
previewEnd = nextDot;
ellipsesAfter = false;
break;
}
for (var k = 0; k < {{ site.search.preview_words_after | default: 10 }}; k++) {
var nextSpace = doc.content.indexOf(' ', previewEnd + 1);
var nextDot = doc.content.indexOf('. ', previewEnd + 1);
if ((nextDot >= 0) && (nextDot < nextSpace)) {
previewEnd = nextDot;
ellipsesAfter = false;
break;
}
if (nextSpace < 0) {
previewEnd = doc.content.length;
ellipsesAfter = false;
break;
}
previewEnd = nextSpace;
if (nextSpace < 0) {
previewEnd = doc.content.length;
ellipsesAfter = false;
break;
}
contentPositions.push({
highlight: position,
previewStart: previewStart, previewEnd: previewEnd,
ellipsesBefore: ellipsesBefore, ellipsesAfter: ellipsesAfter
});
previewEnd = nextSpace;
}
contentPositions.push({
highlight: position,
previewStart: previewStart, previewEnd: previewEnd,
ellipsesBefore: ellipsesBefore, ellipsesAfter: ellipsesAfter
});
}
}
}
if (titlePositions.length > 0) {
titlePositions.sort(function(p1, p2){ return p1[0] - p2[0] });
resultDocOrSection.innerHTML = '';
addHighlightedText(resultDocOrSection, doc.title, 0, doc.title.length, titlePositions);
}
if (titlePositions.length > 0) {
titlePositions.sort(function(p1, p2){ return p1[0] - p2[0] });
resultDocOrSection.innerHTML = '';
addHighlightedText(resultDocOrSection, doc.title, 0, doc.title.length, titlePositions);
}
if (contentPositions.length > 0) {
contentPositions.sort(function(p1, p2){ return p1.highlight[0] - p2.highlight[0] });
var contentPosition = contentPositions[0];
var previewPosition = {
highlight: [contentPosition.highlight],
previewStart: contentPosition.previewStart, previewEnd: contentPosition.previewEnd,
ellipsesBefore: contentPosition.ellipsesBefore, ellipsesAfter: contentPosition.ellipsesAfter
};
var previewPositions = [previewPosition];
for (var j = 1; j < contentPositions.length; j++) {
contentPosition = contentPositions[j];
if (previewPosition.previewEnd < contentPosition.previewStart) {
previewPosition = {
highlight: [contentPosition.highlight],
previewStart: contentPosition.previewStart, previewEnd: contentPosition.previewEnd,
ellipsesBefore: contentPosition.ellipsesBefore, ellipsesAfter: contentPosition.ellipsesAfter
}
previewPositions.push(previewPosition);
} else {
previewPosition.highlight.push(contentPosition.highlight);
previewPosition.previewEnd = contentPosition.previewEnd;
previewPosition.ellipsesAfter = contentPosition.ellipsesAfter;
if (contentPositions.length > 0) {
contentPositions.sort(function(p1, p2){ return p1.highlight[0] - p2.highlight[0] });
var contentPosition = contentPositions[0];
var previewPosition = {
highlight: [contentPosition.highlight],
previewStart: contentPosition.previewStart, previewEnd: contentPosition.previewEnd,
ellipsesBefore: contentPosition.ellipsesBefore, ellipsesAfter: contentPosition.ellipsesAfter
};
var previewPositions = [previewPosition];
for (var j = 1; j < contentPositions.length; j++) {
contentPosition = contentPositions[j];
if (previewPosition.previewEnd < contentPosition.previewStart) {
previewPosition = {
highlight: [contentPosition.highlight],
previewStart: contentPosition.previewStart, previewEnd: contentPosition.previewEnd,
ellipsesBefore: contentPosition.ellipsesBefore, ellipsesAfter: contentPosition.ellipsesAfter
}
previewPositions.push(previewPosition);
} else {
previewPosition.highlight.push(contentPosition.highlight);
previewPosition.previewEnd = contentPosition.previewEnd;
previewPosition.ellipsesAfter = contentPosition.ellipsesAfter;
}
}
var resultPreviews = document.createElement('div');
resultPreviews.classList.add('search-result-previews');
resultLink.appendChild(resultPreviews);
var resultPreviews = document.createElement('div');
resultPreviews.classList.add('search-result-previews');
resultLink.appendChild(resultPreviews);
var content = doc.content;
for (var j = 0; j < Math.min(previewPositions.length, {{ site.search.previews | default: 3 }}); j++) {
var position = previewPositions[j];
var content = doc.content;
for (var j = 0; j < Math.min(previewPositions.length, {{ site.search.previews | default: 3 }}); j++) {
var position = previewPositions[j];
var resultPreview = document.createElement('div');
resultPreview.classList.add('search-result-preview');
resultPreviews.appendChild(resultPreview);
var resultPreview = document.createElement('div');
resultPreview.classList.add('search-result-preview');
resultPreviews.appendChild(resultPreview);
if (position.ellipsesBefore) {
resultPreview.appendChild(document.createTextNode('... '));
}
addHighlightedText(resultPreview, content, position.previewStart, position.previewEnd, position.highlight);
if (position.ellipsesAfter) {
resultPreview.appendChild(document.createTextNode(' ...'));
}
if (position.ellipsesBefore) {
resultPreview.appendChild(document.createTextNode('... '));
}
addHighlightedText(resultPreview, content, position.previewStart, position.previewEnd, position.highlight);
if (position.ellipsesAfter) {
resultPreview.appendChild(document.createTextNode(' ...'));
}
}
{%- if site.search.rel_url != false %}
var resultRelUrl = document.createElement('span');
resultRelUrl.classList.add('search-result-rel-url');
resultRelUrl.innerText = doc.relUrl;
resultTitle.appendChild(resultRelUrl);
{%- endif %}
}
{%- if site.search.rel_url != false %}
var resultRelUrl = document.createElement('span');
resultRelUrl.classList.add('search-result-rel-url');
resultRelUrl.innerText = doc.relUrl;
resultTitle.appendChild(resultRelUrl);
{%- endif %}
}
function addHighlightedText(parent, text, start, end, positions) {
......
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