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bitshift
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A semantic search engine for source code https://bitshift.benkurtovic.com/
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${ item.name }
Create branch ${ searchTerm }
from '3243d7b3b2'
${ noResults }
bitshift/static/js/index.js

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  1. /*

  2.  * @file Manages all library initialization, jQuery callbacks, query entry

  3.  *      callbacks, server querying, and results diplay for `index.html`.

  4.  */

  5. 

  6. var advancedSearchDiv = $("div#advanced-search");

  7. var advancedSearchButton = $("button#advanced-search");

  8. FINISH_TYPING_INTERVAL = 650;

  9. var searchBar = $("form#search-bar input[type='text']")[0];

  10. var resultsDiv = $("div#results")[0];

  11. 

  12. var typingTimer, scrollTimer, lastValue;

  13. var searchResultsPage = 1;

  14. 

  15. /*

  16.  * Set all page callbacks.

  17.  */

  18. (function setHomePageCallbabacks(){

  19.     var results = $('#results').get(0);

  20. 

  21.     // Enable infinite scrolling down the results page.

  22.     $(window).scroll(function(){

  23.         if($(window).scrollTop() + $(window).height() == $(document).height() &&

  24.                 resultsDiv.querySelectorAll(".result").length > 0)

  25.             loadMoreResults();

  26. 

  27.         clearTimeout(scrollTimer);

  28.         if (!results.classList.contains('disable-hover'))

  29.             results.classList.add('disable-hover')

  30. 

  31.         scrollTimer = setTimeout(function(){

  32.             if (results.classList.contains('disable-hover'))

  33.                 results.classList.remove('disable-hover');

  34.         }, 200);

  35.     });

  36. 

  37.     // Toggle the advanced-search form's visibility.

  38.     advancedSearchButton.click(function(){

  39.         var searchField = $("div#search-field");

  40.         if(!advancedSearchDiv.hasClass("visible")){

  41.             searchField.addClass("partly-visible");

  42.             advancedSearchDiv.fadeIn(500).addClass("visible");

  43.             advancedSearchButton.addClass("clicked");

  44.         }

  45.         else {

  46.             advancedSearchDiv.fadeOut(300).removeClass("visible");

  47.             advancedSearchButton.removeClass("clicked");

  48.             if($("div#results .result").length == 0)

  49.                 searchField.removeClass("partly-visible");

  50.         }

  51.     });

  52. 

  53.     // Enable capturing the `enter` key.

  54.     $("form#search-bar").submit(function(event){

  55.         event.preventDefault();

  56.         return false;

  57.     });

  58.     searchBar.onkeyup = typingTimer;

  59. }());

  60. 

  61. /*

  62.  * Set keyboard shortcut mappings.

  63.  */

  64. (function resultsHotkeys(){

  65.     /*

  66.      * If the currently viewed result is not the first, scroll to the previous

  67.      * result.

  68.      */

  69.     var previousResult = function(){

  70.         var currResult = $(".display-all");

  71.         if(currResult.length) {

  72.             currResult.removeClass("display-all");

  73.             currResult = currResult.closest(".result").prev(".result");

  74.         } else {

  75.             currResult = $(document.querySelectorAll(".result")[0]);

  76.         }

  77. 

  78.         currResult.addClass("display-all");

  79.         currResult.each(function(){

  80.             $('html,body').stop().animate({

  81.                 scrollTop: $(this).offset().top - (

  82.                     $(window).height() - $(this).outerHeight(true)) / 2

  83.             }, 140);

  84.         });

  85.     };

  86. 

  87.     /*

  88.      * If the currently viewed result is not the last, scroll to the next

  89.      * result.

  90.      */

  91.     var nextResult = function(){

  92.         var currResult = $(".display-all");

  93.         if(currResult.length) {

  94.             currResult.removeClass("display-all");

  95.             currResult = currResult.closest(".result").next(".result");

  96.         } else {

  97.             currResult = $(document.querySelectorAll(".result")[0]);

  98.         }

  99. 

  100.         currResult.addClass('display-all');

  101.         currResult.each(function(){

  102.             $('html,body').stop().animate({

  103.                 scrollTop: $(this).offset().top - (

  104.                     $(window).height() - $(this).outerHeight(true)) / 2

  105.             }, 140);

  106.         });

  107.     };

  108. 

  109.     var displayHotkeyHelp = function(){

  110.         var help = $("div#hotkey-help");

  111.         console.log("H");

  112.         if(help.hasClass("hidden"))

  113.             help.fadeIn(420);

  114.         else

  115.             help.fadeOut(420);

  116. 

  117.         $("div#body").toggleClass("faded");

  118.         help.toggleClass("hidden");

  119.     }

  120. 

  121.     var hotkeyActions = {

  122.         "k" : previousResult,

  123.         "j" : nextResult,

  124.         "h" : previousSymbolMatch,

  125.         "l" : nextSymbolMatch,

  126.         "?" : displayHotkeyHelp

  127.     };

  128. 

  129.     $(window).keypress(function(key){

  130.         for(var hotkey in hotkeyActions){

  131.             var keyChar = String.fromCharCode(key.keyCode);

  132.             if(keyChar == hotkey &&

  133.                 !($(key.target).is("textarea") || $(key.target).is("input")))

  134.                 hotkeyActions[keyChar]();

  135.         }

  136.     });

  137. }());

  138. 

  139. //Obtained by parsing python file with pygments

  140. var codeExample = '<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre> 1\n 2\n 3\n 4\n 5\n 6\n 7\n 8\n 9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40</pre></div></td><td class="code"><div class="highlight"><pre><span class="sd">&quot;&quot;&quot;</span>\n<span class="sd">Module to contain all the project&#39;s Flask server plumbing.</span>\n<span class="sd">&quot;&quot;&quot;</span>\n\n<span class="kn">from</span> <span class="nn">flask</span> <span class="kn">import</span> <span class="n">Flask</span>\n<span class="kn">from</span> <span class="nn">flask</span> <span class="kn">import</span> <span class="n">render_template</span><span class="p">,</span> <span class="n">session</span>\n\n<span class="kn">from</span> <span class="nn">bitshift</span> <span class="kn">import</span> <span class="n">assets</span>\n<span class="c"># from bitshift.database import Database</span>\n<span class="c"># from bitshift.query import parse_query</span>\n\n<span class="hll"><span class="n">app</span> <span class="o">=</span> <span class="n">Flask</span><span class="p">(</span><span class="n">__name__</span><span class="p">)</span>\n</span><span class="hll"><span class="n">app</span><span class="o">.</span><span class="n">config</span><span class="o">.</span><span class="n">from_object</span><span class="p">(</span><span class="s">&quot;bitshift.config&quot;</span><span class="p">)</span>\n</span>\n<span class="hll"><span class="n">app_env</span> <span class="o">=</span> <span class="n">app</span><span class="o">.</span><span class="n">jinja_env</span>\n</span><span class="hll"><span class="n">app_env</span><span class="o">.</span><span class="n">line_statement_prefix</span> <span class="o">=</span> <span class="s">&quot;=&quot;</span>\n</span><span class="hll"><span class="n">app_env</span><span class="o">.</span><span class="n">globals</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">assets</span><span class="o">=</span><span class="n">assets</span><span class="p">)</span>\n</span>\n<span class="c"># database = Database()</span>\n\n<span class="hll"><span class="nd">@app.route</span><span class="p">(</span><span class="s">&quot;/&quot;</span><span class="p">)</span>\n</span><span class="k">def</span> <span class="nf">index</span><span class="p">():</span>\n    <span class="k">return</span> <span class="n">render_template</span><span class="p">(</span><span class="s">&quot;index.html&quot;</span><span class="p">)</span>\n\n<span class="hll"><span class="nd">@app.route</span><span class="p">(</span><span class="s">&quot;/search/&lt;query&gt;&quot;</span><span class="p">)</span>\n</span><span class="k">def</span> <span class="nf">search</span><span class="p">(</span><span class="n">query</span><span class="p">):</span>\n    <span class="c"># tree = parse_query(query)</span>\n    <span class="c"># database.search(tree)</span>\n    <span class="k">pass</span>\n\n<span class="hll"><span class="nd">@app.route</span><span class="p">(</span><span class="s">&quot;/about&quot;</span><span class="p">)</span>\n</span><span class="k">def</span> <span class="nf">about</span><span class="p">():</span>\n    <span class="k">return</span> <span class="n">render_template</span><span class="p">(</span><span class="s">&quot;about.html&quot;</span><span class="p">)</span>\n\n<span class="hll"><span class="nd">@app.route</span><span class="p">(</span><span class="s">&quot;/developers&quot;</span><span class="p">)</span>\n</span><span class="k">def</span> <span class="nf">developers</span><span class="p">():</span>\n    <span class="k">return</span> <span class="n">render_template</span><span class="p">(</span><span class="s">&quot;developers.html&quot;</span><span class="p">)</span>\n\n<span class="k">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">&quot;__main__&quot;</span><span class="p">:</span>\n<span class="hll">    <span class="n">app</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="n">debug</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>\n</span></pre></div>\n</td></tr></table>'

  141. 

  142. var testCodelet = {

  143.     'url': 'https://github.com/earwig/bitshift/blob/develop/app.py',

  144.     'name': 'app.py',

  145.     'language': 'python',

  146.     'date_created': 'May 10, 2014',

  147.     'date_modified': '2 days ago',

  148.     'origin': ['GitHub', 'https://github.com', ''],

  149.     'authors': ['sevko', 'earwig'],

  150.     'code': codeExample

  151. };

  152. 

  153. // Enable infinite scrolling down the results page.

  154. $(window).scroll(function() {

  155.     var searchField = $("div#search-field");

  156.     if($(window).scrollTop() + $(window).height() == $(document).height() &&

  157.         searchField.hasClass('partly-visible')){

  158.         loadMoreResults();

  159.     }

  160. });

  161. 

  162. /*

  163.  * Clear the existing timer and set a new one the the user types text into the

  164.  * search bar.

  165.  */

  166. function typingTimer(event){

  167.     clearTimeout(typingTimer);

  168. 

  169.     var enterKeyCode = 13;

  170.     if(event.keyCode != enterKeyCode){

  171.         if(lastValue != searchBar.value)

  172.             typingTimer = setTimeout(finishedTyping, FINISH_TYPING_INTERVAL);

  173.     }

  174.     else {

  175.         event.preventDefault();

  176.         finishedTyping();

  177.         return false;

  178.     }

  179. };

  180. 

  181. /*

  182.  * Callback which queries the server whenver the user stops typing.

  183.  *

  184.  * Whenever the user doesn't type for a `FINISH_TYPING_INTERVAL` after having

  185.  * entered new text in the search bar, send the current query request to the

  186.  * server.

  187.  */

  188. function finishedTyping(){

  189.     lastValue = searchBar.value;

  190.     var searchField = $("div#search-field");

  191. 

  192.     clearResults();

  193.     if(searchBar.value){

  194.         searchField.addClass("partly-visible");

  195.         populateResults();

  196.     }

  197.     else {

  198.         searchField.removeClass("partly-visible");

  199.         $("div#advanced-search").fadeOut(50);

  200.         advancedSearchButton.removeClass("clicked");

  201.     }

  202. }

  203. 

  204. /*

  205.  * Removes any child elements of `div#results`.

  206.  */

  207. function clearResults(){

  208.     while(resultsDiv.firstChild)

  209.         resultsDiv.removeChild(resultsDiv.firstChild);

  210. }

  211. 

  212. /*

  213.  * Create a result element based upon a codelet instance.

  214.  *

  215.  * @return {Element} The result element.

  216.  */

  217. function createResult(codelet) {

  218.     //Level 1

  219.     var newDiv = document.createElement("div"),

  220.         table = document.createElement("table"),

  221.         row = document.createElement("tr");

  222.     //Level 2

  223.     var displayInfo = document.createElement("div"),

  224.         codeElt = document.createElement("td"),

  225.         hiddenInfoContainer = document.createElement("td"),

  226.         hiddenInfo = document.createElement("div"),

  227.         cycle = document.createElement("div");

  228.     //Level 3

  229.     var title = document.createElement("span"),

  230.         site = document.createElement("span"),

  231.         nextMatch = document.createElement("a"),

  232.         prevMatch = document.createElement("a"),

  233.         dateModified = document.createElement("div"),

  234.         language = document.createElement("div"),

  235.         dateCreated = document.createElement("div"),

  236.         authors = document.createElement("div");

  237. 

  238.     //Classes and ID's

  239.     newDiv.classList.add('result');

  240. 

  241.     displayInfo.id = 'display-info';

  242.     codeElt.id = 'code';

  243.     hiddenInfo.id = 'hidden-info';

  244.     cycle.id = 'cycle-matches'

  245. 

  246.     title.id = 'title';

  247.     site.id = 'site';

  248.     nextMatch.id = 'next-match';

  249.     nextMatch.href = '#';

  250.     prevMatch.id = 'prev-match';

  251.     prevMatch.href = '#';

  252.     dateModified.id = 'date-modified';

  253.     language.id = 'language';

  254.     dateCreated.id = 'date-created';

  255.     authors.id = 'authors';

  256. 

  257.     //Add the bulk of the html

  258.     title.innerHTML = ' &raquo; <a href="' + codelet.url + '">'

  259.                       + codelet.name + '</a>';

  260.     site.innerHTML = '<a href="' + codelet.origin[1] + '">' + codelet.origin[0] +'</a>';

  261.     nextMatch.innerHTML = 'next match';

  262.     prevMatch.innerHTML = 'prev match';

  263.     language.innerHTML = 'Language: <span>' + codelet.lang + '</span>';

  264.     dateModified.innerHTML = 'Last modified: <span>' + codelet.modified + '</span>';

  265.     // Needs to be changed from int to string on the server

  266.     dateCreated.innerHTML = 'Created: <span>' + codelet.created + '</span>';

  267. 

  268.     var authorsHtml = 'Authors: <span>';

  269.     codelet.authors.forEach(function(a, i) {

  270.         if (i == codelet.authors.length - 1)

  271.             authorsHtml += '<a href=#>' + a + ' </a>';

  272.         else

  273.             authorsHtml += '<a href=#>' + a + ' </a>, ';

  274.     });

  275.     authors.innerHTML = authorsHtml;

  276. 

  277.     // Needs to be processed on the server

  278.     codeElt.innerHTML = '<div id=tablecontainer>' + codelet.code + '</div>';

  279. 

  280.     //Event binding

  281.     $(newDiv).on('mousemove', function(e) {

  282.         var holdCondition = $('.disable-hover');

  283. 

  284.         if(holdCondition.length == 0) {

  285.             $(this).siblings().removeClass('display-all');

  286.             $(this).addClass('display-all');

  287.         }

  288.     });

  289. 

  290.     $(newDiv).on('mouseleave', function(e) {

  291.         var holdCondition = $('.disable-hover');

  292. 

  293.         if(holdCondition.length == 0)

  294.             $(this).removeClass('display-all');

  295.     });

  296. 

  297.     $(nextMatch).click(function(e) {

  298.         e.stopPropagation();

  299.         e.preventDefault();

  300.         nextSymbolMatch();

  301.     });

  302. 

  303.     $(prevMatch).click(function(e) {

  304.         e.stopPropagation();

  305.         e.preventDefault();

  306.         previousSymbolMatch();

  307.     });

  308. 

  309.     //Finish and append elements to parent elements

  310.     hiddenInfo.appendChild(dateCreated);

  311.     hiddenInfo.appendChild(dateModified);

  312.     hiddenInfo.appendChild(language);

  313.     hiddenInfo.appendChild(authors);

  314. 

  315.     hiddenInfoContainer.appendChild(hiddenInfo);

  316. 

  317.     row.appendChild(codeElt);

  318.     row.appendChild(hiddenInfoContainer);

  319.     table.appendChild(row);

  320. 

  321.     displayInfo.appendChild(site);

  322.     displayInfo.appendChild(title);

  323. 

  324.     cycle.appendChild(prevMatch);

  325.     cycle.appendChild(nextMatch);

  326. 

  327.     newDiv.appendChild(displayInfo);

  328.     newDiv.appendChild(table);

  329. 

  330.     return newDiv;

  331. }

  332. 

  333. function previousSymbolMatch() {

  334.     var currResult = $(".display-all"),

  335.         currMatch = currResult.find(".hll.current"),

  336.         matches = currResult.find(".hll"),

  337.         scrollDiv = currResult.find("#tablecontainer");

  338. 

  339.     if (currMatch.length == 0)

  340.         currMatch = matches[0];

  341.     else

  342.         currMatch.removeClass('current');

  343. 

  344.     var index = matches.index(currMatch.get(0)) - 1;

  345.     index = index <= 0 ? matches.length - 1 : index;

  346.     var newMatch = $(matches[index]);

  347. 

  348.     scrollDiv.scrollTop(scrollDiv.scrollTop()

  349.             - scrollDiv.height() / 2

  350.             + newMatch.position().top + newMatch.height() / 2);

  351. 

  352.     newMatch.effect("highlight", {color: '#FFF'}, 750)

  353.     newMatch.addClass('current');

  354. };

  355. 

  356. function nextSymbolMatch() {

  357.     var currResult = $(".display-all"),

  358.         currMatch = currResult.find(".hll.current"),

  359.         matches = currResult.find(".hll"),

  360.         scrollDiv = currResult.find("#tablecontainer");

  361. 

  362.     if (currMatch.length == 0)

  363.         currMatch = $(matches[0]);

  364.     else

  365.         currMatch.removeClass("current");

  366. 

  367.     var index = matches.index(currMatch.get(0)) + 1;

  368.     index = index >= matches.length ? 0 : index;

  369.     var newMatch = $(matches[index]);

  370. 

  371.     scrollDiv.scrollTop(scrollDiv.scrollTop()

  372.             - scrollDiv.height() / 2

  373.             + newMatch.position().top + newMatch.height() / 2);

  374. 

  375.     newMatch.effect("highlight", {color: "#FFF"}, 750)

  376.     newMatch.addClass("current");

  377. };

  378. 

  379. /*

  380.  * AJAX the current query string to the server, and return its response.

  381.  *

  382.  * @return {Array} The server's response in the form of `div.result` DOM

  383.  *      elements, to fill `div#results`.

  384.  */

  385. function queryServer(){

  386.     var queryUrl = document.URL + "search.json?" + $.param({

  387.         "q" : searchBar.value,

  388.         "p" : searchResultsPage++

  389.     });

  390. 

  391.     var results = $.Deferred();

  392.     $.getJSON(queryUrl, function(result){

  393.         var resultDivs = [];

  394.         if("error" in result)

  395.             insertErrorMessage(result["error"]);

  396.         else

  397.             for(var codelet = 0; codelet < result["results"].length; codelet++){

  398.                 resultDivs.push(createResult(result["results"][codelet]));

  399.                 console.log(result["results"][codelet]);

  400.             }

  401.         results.resolve(resultDivs);

  402.     });

  403. 

  404.     return results;

  405. }

  406. 

  407. /*

  408.  * Query the server with the current search string, and populate `div#results`

  409.  * with its response.

  410.  */

  411. function populateResults(){

  412.     searchResultsPage = 1;

  413.     loadMoreResults();

  414. }

  415. 

  416. /*

  417.  * Query the server for the next results page, and add its codelets to

  418.  * `div#results`.

  419.  */

  420. function loadMoreResults(){

  421.     queryServer().done(function(results){

  422.         for(var result = 0; result < results.length; result++){

  423.             var newDiv = results[result];

  424.             resultsDiv.appendChild(newDiv);

  425.             setTimeout(

  426.                 (function(divReference){

  427.                     return function(){

  428.                         divReference.classList.add("cascade");

  429.                     };

  430.                 }(newDiv)),

  431.                 result * 20);

  432.         }

  433.     });

  434. }

  435. 

  436. /*

  437.  * Displays a warning message in the UI.

  438.  *

  439.  * @param msg (str) The message string.

  440.  */

  441. function insertErrorMessage(msg){

  442.     var error = $("<div id='error'><span>Error: </span></div>");

  443.     error.append(msg);

  444.     resultsDiv.appendChild(error[0]);

  445. }