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added more session 1-2 content

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Jeremy Kidwell 2019-03-14 07:49:25 +00:00
parent 211e59c0d9
commit a93fabdf61
27 changed files with 2098 additions and 3 deletions
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docs/libs/gitbook-2.6.7/js/plugin-search.js Normal file
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require(["gitbook", "lodash", "jQuery"], function(gitbook, _, $) {
var index = null;
var $searchInput, $searchForm;
var $highlighted, hi = 0, hiOpts = { className: 'search-highlight' };
var collapse = false;
// Use a specific index
function loadIndex(data) {
// [Yihui] In bookdown, I use a character matrix to store the chapter
// content, and the index is dynamically built on the client side.
// Gitbook prebuilds the index data instead: https://github.com/GitbookIO/plugin-search
// We can certainly do that via R packages V8 and jsonlite, but let's
// see how slow it really is before improving it. On the other hand,
// lunr cannot handle non-English text very well, e.g. the default
// tokenizer cannot deal with Chinese text, so we may want to replace
// lunr with a dumb simple text matching approach.
index = lunr(function () {
this.ref('url');
this.field('title', { boost: 10 });
this.field('body');
});
data.map(function(item) {
index.add({
url: item[0],
title: item[1],
body: item[2]
});
});
}
// Fetch the search index
function fetchIndex() {
return $.getJSON(gitbook.state.basePath+"/search_index.json")
.then(loadIndex); // [Yihui] we need to use this object later
}
// Search for a term and return results
function search(q) {
if (!index) return;
var results = _.chain(index.search(q))
.map(function(result) {
var parts = result.ref.split("#");
return {
path: parts[0],
hash: parts[1]
};
})
.value();
// [Yihui] Highlight the search keyword on current page
hi = 0;
$highlighted = results.length === 0 ? undefined : $('.page-inner')
.unhighlight(hiOpts).highlight(q, hiOpts).find('span.search-highlight');
scrollToHighlighted();
toggleTOC(results.length > 0);
return results;
}
// [Yihui] Scroll the chapter body to the i-th highlighted string
function scrollToHighlighted() {
if (!$highlighted) return;
var n = $highlighted.length;
if (n === 0) return;
var $p = $highlighted.eq(hi), p = $p[0], rect = p.getBoundingClientRect();
if (rect.top < 0 || rect.bottom > $(window).height()) {
($(window).width() >= 1240 ? $('.body-inner') : $('.book-body'))
.scrollTop(p.offsetTop - 100);
}
$highlighted.css('background-color', '');
// an orange background color on the current item and removed later
$p.css('background-color', 'orange');
setTimeout(function() {
$p.css('background-color', '');
}, 2000);
}
// [Yihui] Expand/collapse TOC
function toggleTOC(show) {
if (!collapse) return;
var toc_sub = $('ul.summary').children('li[data-level]').children('ul');
if (show) return toc_sub.show();
var href = window.location.pathname;
href = href.substr(href.lastIndexOf('/') + 1);
if (href === '') href = 'index.html';
var li = $('a[href^="' + href + location.hash + '"]').parent('li.chapter').first();
toc_sub.hide().parent().has(li).children('ul').show();
li.children('ul').show();
}
// Create search form
function createForm(value) {
if ($searchForm) $searchForm.remove();
if ($searchInput) $searchInput.remove();
$searchForm = $('<div>', {
'class': 'book-search',
'role': 'search'
});
$searchInput = $('<input>', {
'type': 'search',
'class': 'form-control',
'val': value,
'placeholder': 'Type to search'
});
$searchInput.appendTo($searchForm);
$searchForm.prependTo(gitbook.state.$book.find('.book-summary'));
}
// Return true if search is open
function isSearchOpen() {
return gitbook.state.$book.hasClass("with-search");
}
// Toggle the search
function toggleSearch(_state) {
if (isSearchOpen() === _state) return;
if (!$searchInput) return;
gitbook.state.$book.toggleClass("with-search", _state);
// If search bar is open: focus input
if (isSearchOpen()) {
gitbook.sidebar.toggle(true);
$searchInput.focus();
} else {
$searchInput.blur();
$searchInput.val("");
gitbook.storage.remove("keyword");
gitbook.sidebar.filter(null);
$('.page-inner').unhighlight(hiOpts);
toggleTOC(false);
}
}
// Recover current search when page changed
function recoverSearch() {
var keyword = gitbook.storage.get("keyword", "");
createForm(keyword);
if (keyword.length > 0) {
if(!isSearchOpen()) {
toggleSearch(true); // [Yihui] open the search box
}
gitbook.sidebar.filter(_.pluck(search(keyword), "path"));
}
}
gitbook.events.bind("start", function(e, config) {
// [Yihui] disable search
if (config.search === false) return;
collapse = !config.toc || config.toc.collapse === 'section' ||
config.toc.collapse === 'subsection';
// Pre-fetch search index and create the form
fetchIndex()
// [Yihui] recover search after the page is loaded
.then(recoverSearch);
// Type in search bar
$(document).on("keyup", ".book-search input", function(e) {
var key = (e.keyCode ? e.keyCode : e.which);
// [Yihui] Escape -> close search box; Up/Down: previous/next highlighted
if (key == 27) {
e.preventDefault();
toggleSearch(false);
} else if (key == 38) {
if (hi <= 0 && $highlighted) hi = $highlighted.length;
hi--;
scrollToHighlighted();
} else if (key == 40) {
hi++;
if ($highlighted && hi >= $highlighted.length) hi = 0;
scrollToHighlighted();
}
}).on("input", ".book-search input", function(e) {
var q = $(this).val();
if (q.length === 0) {
gitbook.sidebar.filter(null);
gitbook.storage.remove("keyword");
$('.page-inner').unhighlight(hiOpts);
toggleTOC(false);
} else {
var results = search(q);
gitbook.sidebar.filter(
_.pluck(results, "path")
);
gitbook.storage.set("keyword", q);
}
});
// Create the toggle search button
gitbook.toolbar.createButton({
icon: 'fa fa-search',
label: 'Search',
position: 'left',
onClick: toggleSearch
});
// Bind keyboard to toggle search
gitbook.keyboard.bind(['f'], toggleSearch);
});
// [Yihui] do not try to recover search; always start fresh
// gitbook.events.bind("page.change", recoverSearch);
});