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define([
"jQuery",
"lodash",
"lunr",
"utils/storage",
"core/state",
"core/sidebar"
], function($, _, lunr, storage, state, sidebar) {
var index = null;
// Use a specific idnex
var useIndex = function(data) {
index = lunr.Index.load(data);
};
// Load complete index
var loadIndex = function() {
$.getJSON(state.basePath+"/search_index.json")
.then(useIndex);
};
// Search for a term
var search = function(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();
return results;
};
// Toggle search bar
var toggleSearch = function(_state) {
if (state != null && isSearchOpen() == _state) return;
var $searchInput = $(".book-search input");
state.$book.toggleClass("with-search", _state);
// If search bar is open: focus input
if (isSearchOpen()) {
sidebar.toggle(true);
$searchInput.focus();
} else {
$searchInput.blur();
$searchInput.val("");
sidebar.filter(null);
}
};
// Return true if search bar is open
var isSearchOpen = function() {
return state.$book.hasClass("with-search");
};
var init = function() {
loadIndex();
// Toggle search
$(document).on("click", ".book-header .toggle-search", function(e) {
e.preventDefault();
toggleSearch();
});
// Type in search bar
$(document).on("keyup", ".book-search input", function(e) {
var key = (e.keyCode ? e.keyCode : e.which);
var q = $(this).val();
if (key == 27) {
e.preventDefault();
toggleSearch(false);
return;
}
if (q.length == 0) {
sidebar.filter(null);
} else {
var results = search(q);
sidebar.filter(
_.pluck(results, "path")
);
}
})
};
return {
init: init,
search: search,
toggle: toggleSearch
};
});
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