clap/docs/main.js
2015-03-15 17:17:52 -04:00

849 lines
33 KiB
JavaScript

// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
/*jslint browser: true, es5: true */
/*globals $: true, rootPath: true */
(function() {
"use strict";
var resizeTimeout, interval;
// This mapping table should match the discriminants of
// `rustdoc::html::item_type::ItemType` type in Rust.
var itemTypes = ["mod",
"externcrate",
"import",
"struct",
"enum",
"fn",
"type",
"static",
"trait",
"impl",
"tymethod",
"method",
"structfield",
"variant",
"macro",
"primitive",
"associatedtype",
"constant"];
$('.js-only').removeClass('js-only');
function getQueryStringParams() {
var params = {};
window.location.search.substring(1).split("&").
map(function(s) {
var pair = s.split("=");
params[decodeURIComponent(pair[0])] =
typeof pair[1] === "undefined" ?
null : decodeURIComponent(pair[1]);
});
return params;
}
function browserSupportsHistoryApi() {
return window.history && typeof window.history.pushState === "function";
}
function highlightSourceLines(ev) {
var i, from, to, match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);
if (match) {
from = parseInt(match[1], 10);
to = Math.min(50000, parseInt(match[2] || match[1], 10));
from = Math.min(from, to);
if ($('#' + from).length === 0) {
return;
}
if (ev === null) $('#' + from)[0].scrollIntoView();
$('.line-numbers span').removeClass('line-highlighted');
for (i = from; i <= to; ++i) {
$('#' + i).addClass('line-highlighted');
}
}
}
highlightSourceLines(null);
$(window).on('hashchange', highlightSourceLines);
$(document).on('keyup', function(e) {
if (document.activeElement.tagName === 'INPUT') {
return;
}
if (e.which === 191 && $('#help').hasClass('hidden')) { // question mark
e.preventDefault();
$('#help').removeClass('hidden');
} else if (e.which === 27) { // esc
if (!$('#help').hasClass('hidden')) {
e.preventDefault();
$('#help').addClass('hidden');
} else if (!$('#search').hasClass('hidden')) {
e.preventDefault();
$('#search').addClass('hidden');
$('#main').removeClass('hidden');
}
} else if (e.which === 83) { // S
e.preventDefault();
$('.search-input').focus();
}
}).on('click', function(e) {
if (!$(e.target).closest('#help').length) {
$('#help').addClass('hidden');
}
});
$('.version-selector').on('change', function() {
var i, match,
url = document.location.href,
stripped = '',
len = rootPath.match(/\.\.\//g).length + 1;
for (i = 0; i < len; ++i) {
match = url.match(/\/[^\/]*$/);
if (i < len - 1) {
stripped = match[0] + stripped;
}
url = url.substring(0, url.length - match[0].length);
}
url += '/' + $('.version-selector').val() + stripped;
document.location.href = url;
});
/**
* A function to compute the Levenshtein distance between two strings
* Licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported
* Full License can be found at http://creativecommons.org/licenses/by-sa/3.0/legalcode
* This code is an unmodified version of the code written by Marco de Wit
* and was found at http://stackoverflow.com/a/18514751/745719
*/
var levenshtein = (function() {
var row2 = [];
return function(s1, s2) {
if (s1 === s2) {
return 0;
} else {
var s1_len = s1.length, s2_len = s2.length;
if (s1_len && s2_len) {
var i1 = 0, i2 = 0, a, b, c, c2, row = row2;
while (i1 < s1_len)
row[i1] = ++i1;
while (i2 < s2_len) {
c2 = s2.charCodeAt(i2);
a = i2;
++i2;
b = i2;
for (i1 = 0; i1 < s1_len; ++i1) {
c = a + (s1.charCodeAt(i1) !== c2 ? 1 : 0);
a = row[i1];
b = b < a ? (b < c ? b + 1 : c) : (a < c ? a + 1 : c);
row[i1] = b;
}
}
return b;
} else {
return s1_len + s2_len;
}
}
};
})();
function initSearch(rawSearchIndex) {
var currentResults, index, searchIndex;
var MAX_LEV_DISTANCE = 3;
var params = getQueryStringParams();
// Populate search bar with query string search term when provided,
// but only if the input bar is empty. This avoid the obnoxious issue
// where you start trying to do a search, and the index loads, and
// suddenly your search is gone!
if ($(".search-input")[0].value === "") {
$(".search-input")[0].value = params.search || '';
}
/**
* Executes the query and builds an index of results
* @param {[Object]} query [The user query]
* @param {[type]} max [The maximum results returned]
* @param {[type]} searchWords [The list of search words to query
* against]
* @return {[type]} [A search index of results]
*/
function execQuery(query, max, searchWords) {
var valLower = query.query.toLowerCase(),
val = valLower,
typeFilter = itemTypeFromName(query.type),
results = [],
split = valLower.split("::");
//remove empty keywords
for (var j = 0; j < split.length; ++j) {
split[j].toLowerCase();
if (split[j] === "") {
split.splice(j, 1);
}
}
// quoted values mean literal search
var nSearchWords = searchWords.length;
if ((val.charAt(0) === "\"" || val.charAt(0) === "'") &&
val.charAt(val.length - 1) === val.charAt(0))
{
val = val.substr(1, val.length - 2);
for (var i = 0; i < nSearchWords; ++i) {
if (searchWords[i] === val) {
// filter type: ... queries
if (typeFilter < 0 || typeFilter === searchIndex[i].ty) {
results.push({id: i, index: -1});
}
}
if (results.length === max) {
break;
}
}
} else {
// gather matching search results up to a certain maximum
val = val.replace(/\_/g, "");
for (var i = 0; i < split.length; ++i) {
for (var j = 0; j < nSearchWords; ++j) {
var lev_distance;
if (searchWords[j].indexOf(split[i]) > -1 ||
searchWords[j].indexOf(val) > -1 ||
searchWords[j].replace(/_/g, "").indexOf(val) > -1)
{
// filter type: ... queries
if (typeFilter < 0 || typeFilter === searchIndex[j].ty) {
results.push({
id: j,
index: searchWords[j].replace(/_/g, "").indexOf(val),
lev: 0,
});
}
} else if (
(lev_distance = levenshtein(searchWords[j], val)) <=
MAX_LEV_DISTANCE) {
if (typeFilter < 0 || typeFilter === searchIndex[j].ty) {
results.push({
id: j,
index: 0,
// we want lev results to go lower than others
lev: lev_distance,
});
}
}
if (results.length === max) {
break;
}
}
}
}
var nresults = results.length;
for (var i = 0; i < nresults; ++i) {
results[i].word = searchWords[results[i].id];
results[i].item = searchIndex[results[i].id] || {};
}
// if there are no results then return to default and fail
if (results.length === 0) {
return [];
}
results.sort(function(aaa, bbb) {
var a, b;
// Sort by non levenshtein results and then levenshtein results by the distance
// (less changes required to match means higher rankings)
a = (aaa.lev);
b = (bbb.lev);
if (a !== b) return a - b;
// sort by crate (non-current crate goes later)
a = (aaa.item.crate !== window.currentCrate);
b = (bbb.item.crate !== window.currentCrate);
if (a !== b) return a - b;
// sort by exact match (mismatch goes later)
a = (aaa.word !== valLower);
b = (bbb.word !== valLower);
if (a !== b) return a - b;
// sort by item name length (longer goes later)
a = aaa.word.length;
b = bbb.word.length;
if (a !== b) return a - b;
// sort by item name (lexicographically larger goes later)
a = aaa.word;
b = bbb.word;
if (a !== b) return (a > b ? +1 : -1);
// sort by index of keyword in item name (no literal occurrence goes later)
a = (aaa.index < 0);
b = (bbb.index < 0);
if (a !== b) return a - b;
// (later literal occurrence, if any, goes later)
a = aaa.index;
b = bbb.index;
if (a !== b) return a - b;
// sort by description (no description goes later)
a = (aaa.item.desc === '');
b = (bbb.item.desc === '');
if (a !== b) return a - b;
// sort by type (later occurrence in `itemTypes` goes later)
a = aaa.item.ty;
b = bbb.item.ty;
if (a !== b) return a - b;
// sort by path (lexicographically larger goes later)
a = aaa.item.path;
b = bbb.item.path;
if (a !== b) return (a > b ? +1 : -1);
// que sera, sera
return 0;
});
// remove duplicates, according to the data provided
for (var i = results.length - 1; i > 0; i -= 1) {
if (results[i].word === results[i - 1].word &&
results[i].item.ty === results[i - 1].item.ty &&
results[i].item.path === results[i - 1].item.path &&
(results[i].item.parent || {}).name === (results[i - 1].item.parent || {}).name)
{
results[i].id = -1;
}
}
for (var i = 0; i < results.length; ++i) {
var result = results[i],
name = result.item.name.toLowerCase(),
path = result.item.path.toLowerCase(),
parent = result.item.parent;
var valid = validateResult(name, path, split, parent);
if (!valid) {
result.id = -1;
}
}
return results;
}
/**
* Validate performs the following boolean logic. For example:
* "File::open" will give IF A PARENT EXISTS => ("file" && "open")
* exists in (name || path || parent) OR => ("file" && "open") exists in
* (name || path )
*
* This could be written functionally, but I wanted to minimise
* functions on stack.
*
* @param {[string]} name [The name of the result]
* @param {[string]} path [The path of the result]
* @param {[string]} keys [The keys to be used (["file", "open"])]
* @param {[object]} parent [The parent of the result]
* @return {[boolean]} [Whether the result is valid or not]
*/
function validateResult(name, path, keys, parent) {
for (var i=0; i < keys.length; ++i) {
// each check is for validation so we negate the conditions and invalidate
if (!(
// check for an exact name match
name.toLowerCase().indexOf(keys[i]) > -1 ||
// then an exact path match
path.toLowerCase().indexOf(keys[i]) > -1 ||
// next if there is a parent, check for exact parent match
(parent !== undefined &&
parent.name.toLowerCase().indexOf(keys[i]) > -1) ||
// lastly check to see if the name was a levenshtein match
levenshtein(name.toLowerCase(), keys[i]) <=
MAX_LEV_DISTANCE)) {
return false;
}
}
return true;
}
function getQuery() {
var matches, type, query, raw = $('.search-input').val();
query = raw;
matches = query.match(/^(fn|mod|struct|enum|trait|t(ype)?d(ef)?)\s*:\s*/i);
if (matches) {
type = matches[1].replace(/^td$/, 'typedef')
.replace(/^tdef$/, 'typedef')
.replace(/^typed$/, 'typedef');
query = query.substring(matches[0].length);
}
return {
raw: raw,
query: query,
type: type,
id: query + type,
};
}
function initSearchNav() {
var hoverTimeout, $results = $('.search-results .result');
$results.on('click', function() {
var dst = $(this).find('a')[0];
if (window.location.pathname == dst.pathname) {
$('#search').addClass('hidden');
$('#main').removeClass('hidden');
document.location.href = dst.href;
}
}).on('mouseover', function() {
var $el = $(this);
clearTimeout(hoverTimeout);
hoverTimeout = setTimeout(function() {
$results.removeClass('highlighted');
$el.addClass('highlighted');
}, 20);
});
$(document).off('keydown.searchnav');
$(document).on('keydown.searchnav', function(e) {
var $active = $results.filter('.highlighted');
if (e.which === 38) { // up
e.preventDefault();
if (!$active.length || !$active.prev()) {
return;
}
$active.prev().addClass('highlighted');
$active.removeClass('highlighted');
} else if (e.which === 40) { // down
e.preventDefault();
if (!$active.length) {
$results.first().addClass('highlighted');
} else if ($active.next().length) {
$active.next().addClass('highlighted');
$active.removeClass('highlighted');
}
} else if (e.which === 13) { // return
e.preventDefault();
if ($active.length) {
document.location.href = $active.find('a').prop('href');
}
}
});
}
function escape(content) {
return $('<h1/>').text(content).html();
}
function showResults(results) {
var output, shown, query = getQuery();
currentResults = query.id;
output = '<h1>Results for ' + escape(query.query) +
(query.type ? ' (type: ' + escape(query.type) + ')' : '') + '</h1>';
output += '<table class="search-results">';
if (results.length > 0) {
shown = [];
results.forEach(function(item) {
var name, type, href, displayPath;
if (shown.indexOf(item) !== -1) {
return;
}
shown.push(item);
name = item.name;
type = itemTypes[item.ty];
if (type === 'mod') {
displayPath = item.path + '::';
href = rootPath + item.path.replace(/::/g, '/') + '/' +
name + '/index.html';
} else if (type === 'static' || type === 'reexport') {
displayPath = item.path + '::';
href = rootPath + item.path.replace(/::/g, '/') +
'/index.html';
} else if (item.parent !== undefined) {
var myparent = item.parent;
var anchor = '#' + type + '.' + name;
displayPath = item.path + '::' + myparent.name + '::';
href = rootPath + item.path.replace(/::/g, '/') +
'/' + itemTypes[myparent.ty] +
'.' + myparent.name +
'.html' + anchor;
} else {
displayPath = item.path + '::';
href = rootPath + item.path.replace(/::/g, '/') +
'/' + type + '.' + name + '.html';
}
output += '<tr class="' + type + ' result"><td>' +
'<a href="' + href + '">' +
displayPath + '<span class="' + type + '">' +
name + '</span></a></td><td>' +
'<a href="' + href + '">' +
'<span class="desc">' + item.desc +
'&nbsp;</span></a></td></tr>';
});
} else {
output += 'No results :( <a href="https://duckduckgo.com/?q=' +
encodeURIComponent('rust ' + query.query) +
'">Try on DuckDuckGo?</a>';
}
output += "</p>";
$('#main.content').addClass('hidden');
$('#search.content').removeClass('hidden').html(output);
$('#search .desc').width($('#search').width() - 40 -
$('#search td:first-child').first().width());
initSearchNav();
}
function search(e) {
var query,
filterdata = [],
obj, i, len,
results = [],
maxResults = 200,
resultIndex;
var params = getQueryStringParams();
query = getQuery();
if (e) {
e.preventDefault();
}
if (!query.query || query.id === currentResults) {
return;
}
// Because searching is incremental by character, only the most
// recent search query is added to the browser history.
if (browserSupportsHistoryApi()) {
if (!history.state && !params.search) {
history.pushState(query, "", "?search=" +
encodeURIComponent(query.raw));
} else {
history.replaceState(query, "", "?search=" +
encodeURIComponent(query.raw));
}
}
resultIndex = execQuery(query, 20000, index);
len = resultIndex.length;
for (i = 0; i < len; ++i) {
if (resultIndex[i].id > -1) {
obj = searchIndex[resultIndex[i].id];
filterdata.push([obj.name, obj.ty, obj.path, obj.desc]);
results.push(obj);
}
if (results.length >= maxResults) {
break;
}
}
showResults(results);
}
function itemTypeFromName(typename) {
for (var i = 0; i < itemTypes.length; ++i) {
if (itemTypes[i] === typename) return i;
}
return -1;
}
function buildIndex(rawSearchIndex) {
searchIndex = [];
var searchWords = [];
for (var crate in rawSearchIndex) {
if (!rawSearchIndex.hasOwnProperty(crate)) { continue }
// an array of [(Number) item type,
// (String) name,
// (String) full path or empty string for previous path,
// (String) description,
// (optional Number) the parent path index to `paths`]
var items = rawSearchIndex[crate].items;
// an array of [(Number) item type,
// (String) name]
var paths = rawSearchIndex[crate].paths;
// convert `paths` into an object form
var len = paths.length;
for (var i = 0; i < len; ++i) {
paths[i] = {ty: paths[i][0], name: paths[i][1]};
}
// convert `items` into an object form, and construct word indices.
//
// before any analysis is performed lets gather the search terms to
// search against apart from the rest of the data. This is a quick
// operation that is cached for the life of the page state so that
// all other search operations have access to this cached data for
// faster analysis operations
var len = items.length;
var lastPath = "";
for (var i = 0; i < len; ++i) {
var rawRow = items[i];
var row = {crate: crate, ty: rawRow[0], name: rawRow[1],
path: rawRow[2] || lastPath, desc: rawRow[3],
parent: paths[rawRow[4]]};
searchIndex.push(row);
if (typeof row.name === "string") {
var word = row.name.toLowerCase();
searchWords.push(word);
} else {
searchWords.push("");
}
lastPath = row.path;
}
}
return searchWords;
}
function startSearch() {
var keyUpTimeout;
$('.do-search').on('click', search);
$('.search-input').on('keyup', function() {
clearTimeout(keyUpTimeout);
keyUpTimeout = setTimeout(search, 500);
});
// Push and pop states are used to add search results to the browser
// history.
if (browserSupportsHistoryApi()) {
$(window).on('popstate', function(e) {
var params = getQueryStringParams();
// When browsing back from search results the main page
// visibility must be reset.
if (!params.search) {
$('#main.content').removeClass('hidden');
$('#search.content').addClass('hidden');
}
// When browsing forward to search results the previous
// search will be repeated, so the currentResults are
// cleared to ensure the search is successful.
currentResults = null;
// Synchronize search bar with query string state and
// perform the search. This will empty the bar if there's
// nothing there, which lets you really go back to a
// previous state with nothing in the bar.
$('.search-input').val(params.search);
// Some browsers fire 'onpopstate' for every page load
// (Chrome), while others fire the event only when actually
// popping a state (Firefox), which is why search() is
// called both here and at the end of the startSearch()
// function.
search();
});
}
search();
}
function plainSummaryLine(markdown) {
var str = markdown.replace(/\n/g, ' ')
str = str.replace(/'/g, "\'")
str = str.replace(/^#+? (.+?)/, "$1")
str = str.replace(/\[(.*?)\]\(.*?\)/g, "$1")
str = str.replace(/\[(.*?)\]\[.*?\]/g, "$1")
return str;
}
index = buildIndex(rawSearchIndex);
startSearch();
// Draw a convenient sidebar of known crates if we have a listing
if (rootPath == '../') {
var sidebar = $('.sidebar');
var div = $('<div>').attr('class', 'block crate');
div.append($('<h2>').text('Crates'));
var crates = [];
for (var crate in rawSearchIndex) {
if (!rawSearchIndex.hasOwnProperty(crate)) { continue }
crates.push(crate);
}
crates.sort();
for (var i = 0; i < crates.length; ++i) {
var klass = 'crate';
if (crates[i] == window.currentCrate) {
klass += ' current';
}
var desc = rawSearchIndex[crates[i]].items[0][3];
div.append($('<a>', {'href': '../' + crates[i] + '/index.html',
'title': plainSummaryLine(desc),
'class': klass}).text(crates[i]));
}
sidebar.append(div);
}
}
window.initSearch = initSearch;
// delayed sidebar rendering.
function initSidebarItems(items) {
var sidebar = $('.sidebar');
var current = window.sidebarCurrent;
function block(shortty, longty) {
var filtered = items[shortty];
if (!filtered) return;
var div = $('<div>').attr('class', 'block ' + shortty);
div.append($('<h2>').text(longty));
for (var i = 0; i < filtered.length; ++i) {
var item = filtered[i];
var name = item[0];
var desc = item[1]; // can be null
var klass = shortty;
if (name === current.name && shortty == current.ty) {
klass += ' current';
}
var path;
if (shortty === 'mod') {
path = name + '/index.html';
} else {
path = shortty + '.' + name + '.html';
}
div.append($('<a>', {'href': current.relpath + path,
'title': desc,
'class': klass}).text(name));
}
sidebar.append(div);
}
block("mod", "Modules");
block("struct", "Structs");
block("enum", "Enums");
block("trait", "Traits");
block("fn", "Functions");
block("macro", "Macros");
}
window.initSidebarItems = initSidebarItems;
window.register_implementors = function(imp) {
var list = $('#implementors-list');
var libs = Object.getOwnPropertyNames(imp);
for (var i = 0; i < libs.length; ++i) {
if (libs[i] == currentCrate) continue;
var structs = imp[libs[i]];
for (var j = 0; j < structs.length; ++j) {
var code = $('<code>').append(structs[j]);
$.each(code.find('a'), function(idx, a) {
var href = $(a).attr('href');
if (href && href.indexOf('http') !== 0) {
$(a).attr('href', rootPath + href);
}
});
var li = $('<li>').append(code);
list.append(li);
}
}
};
if (window.pending_implementors) {
window.register_implementors(window.pending_implementors);
}
// See documentation in html/render.rs for what this is doing.
var query = getQueryStringParams();
if (query['gotosrc']) {
window.location = $('#src-' + query['gotosrc']).attr('href');
}
$("#expand-all").on("click", function() {
$(".docblock").show();
$(".toggle-label").hide();
$(".toggle-wrapper").removeClass("collapsed");
$(".collapse-toggle").children(".inner").html("-");
});
$("#collapse-all").on("click", function() {
$(".docblock").hide();
$(".toggle-label").show();
$(".toggle-wrapper").addClass("collapsed");
$(".collapse-toggle").children(".inner").html("+");
});
$(document).on("click", ".collapse-toggle", function() {
var toggle = $(this);
var relatedDoc = toggle.parent().next();
if (relatedDoc.is(".docblock")) {
if (relatedDoc.is(":visible")) {
relatedDoc.slideUp({duration:'fast', easing:'linear'});
toggle.parent(".toggle-wrapper").addClass("collapsed");
toggle.children(".inner").html("+");
toggle.children(".toggle-label").fadeIn();
} else {
relatedDoc.slideDown({duration:'fast', easing:'linear'});
toggle.parent(".toggle-wrapper").removeClass("collapsed");
toggle.children(".inner").html("-");
toggle.children(".toggle-label").hide();
}
}
});
$(function() {
var toggle = $("<a/>", {'href': 'javascript:void(0)', 'class': 'collapse-toggle'})
.html("[<span class='inner'>-</span>]");
$(".method").each(function() {
if ($(this).next().is(".docblock")) {
$(this).children().first().after(toggle.clone());
}
});
var mainToggle =
$(toggle).append(
$('<span/>', {'class': 'toggle-label'})
.css('display', 'none')
.html('&nbsp;Expand&nbsp;description'));
var wrapper = $("<div class='toggle-wrapper'>").append(mainToggle);
$("#main > .docblock").before(wrapper);
});
$('pre.line-numbers').on('click', 'span', function() {
var prev_id = 0;
function set_fragment(name) {
if (history.replaceState) {
history.replaceState(null, null, '#' + name);
$(window).trigger('hashchange');
} else {
location.replace('#' + name);
}
}
return function(ev) {
var cur_id = parseInt(ev.target.id);
if (ev.shiftKey && prev_id) {
if (prev_id > cur_id) {
var tmp = prev_id;
prev_id = cur_id;
cur_id = tmp;
}
set_fragment(prev_id + '-' + cur_id);
} else {
prev_id = cur_id;
set_fragment(cur_id);
}
};
}());
}());