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Wanikani Self-Study Quiz

Quiz yourself on Wanikani items

目前為 2018-06-24 提交的版本，檢視 最新版本。

  1. // ==UserScript==
  2. // @name        Wanikani Self-Study Quiz
  3. // @namespace   rfindley
  4. // @description Quiz yourself on Wanikani items
  5. // @version     3.0.19
  6. // @include     https://www.wanikani.com/*
  7. // @exclude     https://www.wanikani.com/review*
  8. // @exclude     https://www.wanikani.com/lesson*
  9. // @require     https://unpkg.com/wanakana
  10. // @copyright   2018+, Robin Findley
  11. // @license     MIT; http://opensource.org/licenses/MIT
  12. // @run-at      document-end
  13. // @grant       none
  14. // ==/UserScript==
  15.  
  16. window.ss_quiz = {};
  17.  
  18. (function(gobj) {
  19.  
  20.     //===================================================================
  21.     // Initialization of the Wanikani Open Framework.
  22.     //-------------------------------------------------------------------
  23.     var script_name = 'Self-Study Quiz';
  24.     var wkof_version_needed = '1.0.17';
  25.     if (!window.wkof) {
  26.         if (confirm(script_name+' requires Wanikani Open Framework.\nDo you want to be forwarded to the installation instructions?'))
  27.             window.location.href = 'https://community.wanikani.com/t/instructions-installing-wanikani-open-framework/28549';
  28.         return;
  29.     }
  30.     if (wkof.version.compare_to(wkof_version_needed) === 'older') {
  31.         if (confirm(script_name+' requires Wanikani Open Framework version '+wkof_version_needed+'.\nDo you want to be forwarded to the update page?'))
  32.             window.location.href = 'https://gf.qytechs.cn/en/scripts/38582-wanikani-open-framework';
  33.         return;
  34.     }
  35.  
  36.     wkof.include('Menu');
  37.     wkof.ready('Menu').then(install_menu);
  38.  
  39.     function install_menu() {
  40.         wkof.Menu.insert_script_link({
  41.             name: 'selfstudyquiz',
  42.             submenu: 'Open',
  43.             title: 'Self-Study Quiz',
  44.             on_click: open_quiz
  45.         });
  46.     }
  47.  
  48.     //########################################################################
  49.     // QUIZ SETTINGS DIALOG
  50.     //########################################################################
  51.  
  52.     //========================================================================
  53.     // setup_quiz_settings()
  54.     //------------------------------------------------------------------------
  55.     var quiz_settings_state = 'init';
  56.     function setup_quiz_settings() {
  57.         if (quiz_settings_state === 'init') {
  58.             quiz_settings_state = 'loading';
  59.             return wkof.ready('Settings')
  60.             .then(function(){
  61.                 quiz_settings_state = 'setup';
  62.                 setup_quiz_settings();
  63.             });
  64.         }
  65.         if (quiz_settings_state !== 'setup') return;
  66.  
  67.         var config = {
  68.             script_id: 'ss_quiz',
  69.             title: 'Self-Study Quiz',
  70.             pre_open: preopen_quiz_settings,
  71.             on_save: save_quiz_settings,
  72.             on_close: close_quiz_settings,
  73.             on_refresh: refresh_quiz_settings,
  74.             no_bkgd: true,
  75.             settings: {
  76.                 pg_questions: {type:'page',label:'Questions',hover_tip:'Choose what quiz questions you want to be asked',content:{
  77.                     grp_qpre_list: {type:'group',label:'Presets List',content:{
  78.                         active_qpreset: {type:'list',refresh_on_change:true,hover_tip:'Question Presets',content:{}},
  79.                     }},
  80.                     grp_qpre: {type:'group',label:'Selected Preset',content:{
  81.                         sect_qpre_name: {type:'section',label:'Preset Name'},
  82.                         qpre_name: {type:'text',label:'Edit Preset Name',on_change:refresh_qpresets,path:'@qpresets[@active_qpreset].name',hover_tip:'Enter a name for the selected preset'},
  83.  
  84.                         sect_qpre_question: {type:'section',label:'Questions <span class="icon-circle-arrow-right"></span> Answers'},
  85.                         char2mean: {type:'checkbox',label:'Rad/Kan/Voc <span class="icon-circle-arrow-right"></span> Meaning',path:'@qpresets[@active_qpreset].content.char2mean',hover_tip:'Question: A radical or kanji character, or vocab word drawn with kanji\nAnswer: The meaning in English'},
  86.                         char2read: {type:'checkbox',label:'Kan/Voc <span class="icon-circle-arrow-right"></span> Reading',path:'@qpresets[@active_qpreset].content.char2read',hover_tip:'Question: A kanji character, or vocab word drawn with kanji\nAnswer: The Japanese reading, in hiragana or katakana'},
  87.                         read2mean: {type:'checkbox',label:'Voc Reading <span class="icon-circle-arrow-right"></span> Meaning',path:'@qpresets[@active_qpreset].content.read2mean',hover_tip:'Question: A kanji or vocab reading, in hiragana or katakana\nAnswer: The meaning in English'},
  88.                         mean2read: {type:'checkbox',label:'Voc Meaning <span class="icon-circle-arrow-right"></span> Reading',path:'@qpresets[@active_qpreset].content.mean2read',hover_tip:'Question: A vocab word in English\nAnswer: The Japanese reading, in hiragana or katakana'},
  89.                         aud2mean: {type:'checkbox',label:'Voc Audio <span class="icon-circle-arrow-right"></span> Meaning',path:'@qpresets[@active_qpreset].content.aud2mean',hover_tip:'Question: A vocab word, in spoken audio\nAnswer: The meaning in English'},
  90.                         aud2read: {type:'checkbox',label:'Voc Audio <span class="icon-circle-arrow-right"></span> Reading',path:'@qpresets[@active_qpreset].content.aud2read',hover_tip:'Question: A vocab word, in spoken audio\nAnswer: The Japanese reading, in hiragana or katakana'},
  91.                     }},
  92.                 }},
  93.                 pg_items: {type:'page',label:'Items',hover_tip:'Choose what items you want to be quizzed on',content:{
  94.                     grp_ipre_list: {type:'group',label:'Presets List',content:{
  95.                         active_ipreset: {type:'list',refresh_on_change:true,hover_tip:'Item Presets',content:{}},
  96.                     }},
  97.                     grp_ipre: {type:'group',label:'Selected Preset',content:{
  98.                         sect_ipre_name: {type:'section',label:'Preset Name'},
  99.                         ipre_name: {type:'text',label:'Edit Preset Name',on_change:refresh_ipresets,path:'@ipresets[@active_ipreset].name',hover_tip:'Enter a name for the selected preset'},
  100.  
  101.                         sect_ipre_srcs: {type:'section',label:'Item Sources'},
  102.                         ipre_srcs: {type:'tabset',content:{}},
  103.                     }},
  104.                 }},
  105.                 pg_opts: {type:'page',label:'Settings',hover_tip:'Configure the user interface settings',content:{
  106.                     grp_quiz_size: {type:'group',label:'Quiz Size',content:{
  107.                         max_quiz_size: {type:'number',label:'Maximum Quiz Size',hover_tip:'Set the approximate maximum quiz size. (0 for unlimited)',default:0},
  108.                     }},
  109.                     grp_typos: {type:'group',label:'Typo Tolerance',content:{
  110.                         allow_typos: {type:'checkbox',label:'Allow typos',hover_tip:'When enabled, English answers with minor typos will be accepted.',default:true},
  111.                     }},
  112.                     grp_help: {type:'group',label:'Wrong Answers',content:{
  113.                         autoshow_correct: {type:'checkbox',label:'Auto-show Correct Answer',hover_tip:'Automatically show the correct answer\nwhen you answer incorrectly.',default:false},
  114.                     }},
  115.                     grp_msgs: {type:'group',label:'Warning Messages',content:{
  116.                         show_slightly_off: {type:'checkbox',label:'Answer is slightly off',path:'@messages.show_slightly_off',hover_tip:'Tells you when your answer is slightly off',default:true},
  117.                         show_multi_reading: {type:'checkbox',label:'Has multiple readings',path:'@messages.show_multi_reading',hover_tip:'Tells you when an item has multiple readings',default:false},
  118.                     }},
  119.                     grp_halt: {type:'group',label:'Override Lightning',content:{
  120.                         halt_slightly_off: {type:'checkbox',label:'Halt if slightly off',path:'@messages.halt_slightly_off',hover_tip:'Override lightning mode when your answer is slightly off',default:true},
  121.                         halt_multi_reading: {type:'checkbox',label:'Halt if multiple readings',path:'@messages.halt_multi_reading',hover_tip:'Override lightning mode when an item has multiple readings',default:false},
  122.                     }},
  123.                 }},
  124.             },
  125.         };
  126.  
  127.         populate_items_config(config);
  128.  
  129.         quiz.settings_dialog = new wkof.Settings(config);
  130.         quiz_settings_state = 'ready';
  131.         open_quiz_settings();
  132.     }
  133.  
  134.     //========================================================================
  135.     // preopen_quiz_settings()
  136.     //------------------------------------------------------------------------
  137.     function preopen_quiz_settings(dialog) {
  138.         var btn_grp =
  139.             '<div class="pre_list_btn_grp">'+
  140.             '<button type="button" ref="###" action="new" class="ui-button ui-corner-all ui-widget" title="Create a new preset">New</button>'+
  141.             '<button type="button" ref="###" action="up" class="ui-button ui-corner-all ui-widget" title="Move the selected preset up in the list"><span class="icon-arrow-up"></span></button>'+
  142.             '<button type="button" ref="###" action="down" class="ui-button ui-corner-all ui-widget" title="Move the selected preset down in the list"><span class="icon-arrow-down"></span></button>'+
  143.             '<button type="button" ref="###" action="delete" class="ui-button ui-corner-all ui-widget" title="Delete the selected preset">Delete</button>'+
  144.             '</div>';
  145.  
  146.         var wrap = dialog.find('#ss_quiz_active_qpreset').closest('.row');
  147.         wrap.addClass('pre_list_wrap');
  148.         wrap.prepend(btn_grp.replace(/###/g, 'qpreset'));
  149.         wrap.find('.pre_list_btn_grp').on('click', 'button', preset_button_pressed);
  150.  
  151.         wrap = dialog.find('#ss_quiz_active_ipreset').closest('.row');
  152.         wrap.addClass('pre_list_wrap');
  153.         wrap.prepend(btn_grp.replace(/###/g, 'ipreset'));
  154.         wrap.find('.pre_list_btn_grp').on('click', 'button', preset_button_pressed);
  155.  
  156.         $('#ss_quiz_ipre_srcs .row:first-child').each(function(i,e){
  157.             var row = $(e);
  158.             var right = row.find('>.right');
  159.             row.prepend(right);
  160.             row.addClass('src_enable');
  161.         });
  162.  
  163.         // Customize the item source filters.
  164.         var srcs = $('#ss_quiz_ipre_srcs');
  165.         var flt_grps = srcs.find('.wkof_group');
  166.         flt_grps.addClass('filters');
  167.         var filters = flt_grps.find('.row');
  168.         filters.prepend('<div class="enable"><input type="checkbox"></div>');
  169.         filters.on('change', '.enable input[type="checkbox"]', toggle_filter);
  170.  
  171.         init_settings();
  172.         refresh_qpresets();
  173.         refresh_ipresets();
  174.     }
  175.  
  176.     //========================================================================
  177.     // open_quiz_settings()
  178.     //------------------------------------------------------------------------
  179.     function open_quiz_settings() {
  180.         if (quiz_settings_state !== 'ready') return setup_quiz_settings();
  181.         quiz_settings_state = 'open';
  182.         var backup = {};
  183.         quiz.backup = backup;
  184.         backup.max_quiz_size = quiz.settings.max_quiz_size;
  185.         backup.qpre = JSON.stringify(quiz.settings.qpresets[quiz.settings.active_qpreset].content);
  186.         backup.ipre = JSON.stringify(quiz.settings.ipresets[quiz.settings.active_ipreset].content);
  187.         quiz.settings_dialog.open();
  188.     }
  189.  
  190.     //========================================================================
  191.     // save_quiz_settings()
  192.     //------------------------------------------------------------------------
  193.     function save_quiz_settings(settings) {
  194.         quiz.settings = settings;
  195.         populate_presets($('#ss_quiz_qna'), settings.qpresets, settings.active_qpreset);
  196.         populate_presets($('#ss_quiz_source'), settings.ipresets, settings.active_ipreset);
  197.         var qpre = JSON.stringify(quiz.settings.qpresets[quiz.settings.active_qpreset].content);
  198.         var ipre = JSON.stringify(quiz.settings.ipresets[quiz.settings.active_ipreset].content);
  199.         var reshuffle = (qpre !== quiz.backup.qpre) || (quiz.settings.max_quiz_size !== quiz.backup.max_quiz_size);
  200.         var refetch = (ipre !== quiz.backup.ipre);
  201.         delete quiz.backup;
  202.         if (refetch) {
  203.             fetch_items().then(quiz.start);
  204.         } else if (reshuffle) {
  205.             quiz.start();
  206.         }
  207.     }
  208.  
  209.     //========================================================================
  210.     // close_quiz_settings()
  211.     //------------------------------------------------------------------------
  212.     function close_quiz_settings(settings) {
  213.         quiz_settings_state = 'setup';
  214.     }
  215.  
  216.     //========================================================================
  217.     // refresh_quiz_settings()
  218.     //------------------------------------------------------------------------
  219.     function refresh_quiz_settings(settings) {
  220.         $('#ss_quiz_ipre_srcs .wkof_group .row').each(function(i,e){
  221.             var row = $(e);
  222.             var panel = row.closest('[role="tabpanel"]');
  223.             var source = panel.attr('id').match(/^ss_quiz_pg_(.*)$/)[1];
  224.             var filter_name = row.find('.setting').attr('name').slice((source+'_flt_').length);
  225.             var preset = quiz.settings.ipresets[quiz.settings.active_ipreset].content;
  226.             var enabled = false;
  227.             try {
  228.                 enabled = preset[source].filters[filter_name].enabled;
  229.             } catch(e) {}
  230.  
  231.             if (enabled) {
  232.                 row.addClass('checked');
  233.             } else {
  234.                 row.removeClass('checked');
  235.             }
  236.             row.find('.enable input[type="checkbox"]').prop('checked', enabled);
  237.         });
  238.     }
  239.  
  240.     //========================================================================
  241.     // refresh_qpresets()
  242.     //------------------------------------------------------------------------
  243.     function refresh_qpresets() {
  244.         var settings = quiz.settings;
  245.         populate_presets($('#ss_quiz_active_qpreset'), settings.qpresets, settings.active_qpreset);
  246.     }
  247.  
  248.     //========================================================================
  249.     // refresh_ipresets()
  250.     //------------------------------------------------------------------------
  251.     function refresh_ipresets() {
  252.         var settings = quiz.settings;
  253.         populate_presets($('#ss_quiz_active_ipreset'), settings.ipresets, settings.active_ipreset);
  254.     }
  255.  
  256.     //========================================================================
  257.     // preset_button_pressed()
  258.     //------------------------------------------------------------------------
  259.     function preset_button_pressed(e) {
  260.         var settings = quiz.settings;
  261.         var ref = e.currentTarget.attributes.ref.value;
  262.         var action = e.currentTarget.attributes.action.value;
  263.         var selected = Number(settings['active_'+ref]);
  264.         var presets = settings[ref+'s'];
  265.         var elem = $('#ss_quiz_active_'+ref);
  266.  
  267.         var dflt;
  268.         if (ref === 'qpreset') {
  269.             dflt = {name:'<untitled>', content:$.extend(true, {}, qpre_defaults)};
  270.         } else {
  271.             dflt = {name:'<untitled>', content:$.extend(true, {}, ipre_defaults)};
  272.         }
  273.  
  274.         switch (action) {
  275.             case 'new':
  276.                 presets.push(dflt);
  277.                 selected = presets.length - 1;
  278.                 settings[ref+'s'] = presets;
  279.                 settings['active_'+ref] = selected;
  280.                 populate_presets(elem, presets, selected);
  281.                 quiz.settings_dialog.refresh();
  282.                 $('#ss_quiz_'+ref.slice(0,4)+'_name').focus().select();
  283.                 break;
  284.  
  285.             case 'up':
  286.                 if (selected <= 0) break;
  287.                 presets = [].concat(presets.slice(0, selected-1), presets[selected], presets[selected-1], presets.slice(selected+1));
  288.                 selected--;
  289.                 settings[ref+'s'] = presets;
  290.                 settings['active_'+ref] = selected;
  291.                 populate_presets(elem, presets, selected);
  292.                 break;
  293.  
  294.             case 'down':
  295.                 if (selected >= presets.length-1) break;
  296.                 presets = [].concat(presets.slice(0, selected), presets[selected+1], presets[selected], presets.slice(selected+2));
  297.                 selected++;
  298.                 settings[ref+'s'] = presets;
  299.                 settings['active_'+ref] = selected;
  300.                 populate_presets(elem, presets, selected);
  301.                 break;
  302.  
  303.             case 'delete':
  304.                 presets = presets.slice(0, selected).concat(presets.slice(selected+1));
  305.                 selected = Math.max(0, selected-1);
  306.                 settings[ref+'s'] = presets;
  307.                 settings['active_'+ref] = selected;
  308.                 populate_presets(elem, presets, selected);
  309.                 quiz.settings_dialog.refresh();
  310.                 break;
  311.         }
  312.     }
  313.  
  314.     //========================================================================
  315.     // init_settings()
  316.     //------------------------------------------------------------------------
  317.     var qpre_defaults = {char2mean:false, char2read:false, read2mean:false, mean2read:false, aud2mean:false, aud2read:false};
  318.     function init_settings() {
  319.         var idx;
  320.         // Merge some defaults
  321.         var defaults = {
  322.             pairing: 'reading_first',
  323.             allow_typos: true,
  324.             play_audio: true,
  325.             mute_audio: false,
  326.             autoshow_correct: false,
  327.             max_quiz_size: 0, // 0 = unlimited
  328.             messages: {
  329.                 show_slightly_off: true,
  330.                 show_multi_reading: false,
  331.                 halt_slightly_off: true,
  332.                 halt_multi_reading: false,
  333.             }
  334.         };
  335.         var settings = $.extend(true, {}, defaults, wkof.settings.ss_quiz);
  336.         wkof.settings.ss_quiz = quiz.settings = settings;
  337.         if (settings.qpresets === undefined) {
  338.             settings.qpresets = [
  339.                 {name:'All Questions', content:{char2mean:true, char2read:true, read2mean:true, mean2read:true, aud2mean:true, aud2read:true}},
  340.                 {name:'Japanese to English', content:{char2mean:true, char2read:true, read2mean:false, mean2read:false, aud2mean:false, aud2read:false}},
  341.                 {name:'English to Japanese', content:{char2mean:false, char2read:false, read2mean:false, mean2read:true, aud2mean:false, aud2read:false}},
  342.                 {name:'Audio Quiz', content:{char2mean:false, char2read:false, read2mean:false, mean2read:false, aud2mean:true, aud2read:true}},
  343.             ];
  344.             settings.active_qpreset = 0;
  345.         }
  346.         for (idx in settings.qpresets) {
  347.             settings.qpresets[idx].content = $.extend(true, {}, qpre_defaults, settings.qpresets[idx].content);
  348.         }
  349.         if (settings.messages === undefined) {
  350.             settings.messages = {show_slightly_off:true, show_multi_reading:false, halt_slightly_off:true, halt_multi_reading:false}
  351.         }
  352.         if (settings.ipresets === undefined) {
  353.             settings.ipresets = [
  354.                 {name:'All Learned Items', content:{wk_items:{enabled:true,filters:{srs:{enabled:true,value:{appr1:true,appr2:true,appr3:true,appr4:true,guru1:true,guru2:true,mast:true,enli:true,burn:true}}}}}},
  355.                 {name:'Apprentice Items', content:{wk_items:{enabled:true,filters:{srs:{enabled:true,value:{appr1:true,appr2:true,appr3:true,appr4:true}}}}}},
  356.                 {name:'Burned Items', content:{wk_items:{enabled:true,filters:{srs:{enabled:true,value:{burn:true}}}}}},
  357.                 {name:'Resurrected Items', content:{wk_items:{enabled:true,filters:{have_burned:{enabled:true,value:true},srs:{enabled:true,value:{appr1:true,appr2:true,appr3:true,appr4:true,guru1:true,guru2:true,mast:true,enli:true}}}}}},
  358.             ];
  359.             settings.active_ipreset = 0;
  360.         }
  361.         if (ipre_defaults) {
  362.             for (idx in settings.ipresets) {
  363.                 settings.ipresets[idx].content = $.extend(true, {}, ipre_defaults, settings.ipresets[idx].content);
  364.             }
  365.         }
  366.     }
  367.  
  368.     //========================================================================
  369.     // populate_items_config()
  370.     //------------------------------------------------------------------------
  371.     var ipre_defaults;
  372.     function populate_items_config(config) {
  373.         var ipre_srcs = config.settings.pg_items.content.grp_ipre.content.ipre_srcs.content;
  374.         var srcs = wkof.ItemData.registry.sources;
  375.         ipre_defaults = {};
  376.         for (var src_name in srcs) {
  377.             var src = srcs[src_name];
  378.             var pg_content = {};
  379.             ipre_srcs['pg_'+src_name] = {type:'page',label:src.description,content:pg_content};
  380.             var settings = {};
  381.             ipre_defaults[src_name] = settings;
  382.             pg_content[src_name+'_enable'] = {
  383.                 type:'checkbox',
  384.                 label:'Include this source',
  385.                 path:'@ipresets[@active_ipreset].content["'+src_name+'"].enabled',
  386.                 hover_tip:'Check to include this data source in the quiz'
  387.             };
  388.             // Enable Wanikani source by default.
  389.             settings.enabled = (src_name === 'wk_items');
  390.  
  391.             // Add 'Options' section.  'wk_items' is handled automatically.
  392.             if (src_name !== 'wk_items') {
  393.                 if (src.options && Object.keys(src.options).length > 0) {
  394.                     settings.options = {};
  395.                     var opt_content = {};
  396.                     pg_content['grp_'+src_name+'_options'] = {type:'group',label:'Options',content:opt_content};
  397.                     for (var opt_name in src.options) {
  398.                         var opt = src.options[opt_name];
  399.                         switch (opt.type) {
  400.                             case 'checkbox':
  401.                                 opt_content[src_name+'_opt_'+opt_name] = {
  402.                                     type:'checkbox',
  403.                                     label:opt.label,
  404.                                     default:opt.default,
  405.                                     hover_tip:opt.hover_tip
  406.                                 }
  407.                                 break;
  408.                         }
  409.                     }
  410.                 }
  411.             }
  412.  
  413.             // Add 'Filters' section.
  414.             if (src.filters && Object.keys(src.filters).length > 0) {
  415.                 settings.filters = {};
  416.                 var flt_content = {};
  417.                 pg_content['grp_'+src_name+'_filters'] = {type:'group',label:'Filters',content:flt_content};
  418.                 for (var flt_name in src.filters) {
  419.                     var flt = src.filters[flt_name];
  420.                     settings.filters[flt_name] = {enabled:false, value:flt.default};
  421.                     switch (flt.type) {
  422.                         case 'checkbox':
  423.                             flt_content[src_name+'_flt_'+flt_name] = {
  424.                                 type:'checkbox',
  425.                                 label:flt.label,
  426.                                 default:flt.default,
  427.                                 path:'@ipresets[@active_ipreset].content["'+src_name+'"].filters["'+flt_name+'"].value',
  428.                                 hover_tip:flt.hover_tip
  429.                             }
  430.                             break;
  431.                         case 'multi':
  432.                             var dflt = flt.default;
  433.                             if (typeof flt.filter_value_map === 'function') dflt = flt.filter_value_map(dflt);
  434.                             flt_content[src_name+'_flt_'+flt_name] = {
  435.                                 type:'list',
  436.                                 multi:true,
  437.                                 size:Math.min(4,Object.keys(flt.content).length),
  438.                                 label:flt.label,
  439.                                 content:flt.content,
  440.                                 default:dflt,
  441.                                 path:'@ipresets[@active_ipreset].content["'+src_name+'"].filters["'+flt_name+'"].value',
  442.                                 hover_tip:flt.hover_tip
  443.                             }
  444.                             settings.filters[flt_name].value = dflt;
  445.                             break;
  446.                         case 'text':
  447.                         case 'number':
  448.                         case 'input':
  449.                             flt_content[src_name+'_flt_'+flt_name] = {
  450.                                 type:flt.type,
  451.                                 label:flt.label,
  452.                                 placeholder:flt.placeholder,
  453.                                 default:flt.default,
  454.                                 path:'@ipresets[@active_ipreset].content["'+src_name+'"].filters["'+flt_name+'"].value',
  455.                                 hover_tip:flt.hover_tip
  456.                             }
  457.                             break;
  458.                         case 'button':
  459.                             flt_content[src_name+'_flt_'+flt_name] = {
  460.                                 type:flt.type,
  461.                                 label:flt.label,
  462.                                 on_click:flt.on_click,
  463.                                 hover_tip:flt.hover_tip
  464.                             }
  465.                             break;
  466.                     }
  467.                 }
  468.             }
  469.         }
  470.     }
  471.  
  472.     //========================================================================
  473.     // toggle_filter()
  474.     //------------------------------------------------------------------------
  475.     function toggle_filter(e) {
  476.         var row = $(e.delegateTarget);
  477.         var panel = row.closest('[role="tabpanel"]');
  478.         var source = panel.attr('id').match(/^ss_quiz_pg_(.*)$/)[1];
  479.         var enabled = row.find('.enable input[type="checkbox"]').prop('checked');
  480.         var preset = quiz.settings.ipresets[quiz.settings.active_ipreset].content;
  481.         var filter_name = row.find('.setting').attr('name').slice((source+'_flt_').length);
  482.  
  483.         if (enabled) {
  484.             row.addClass('checked');
  485.         } else {
  486.             row.removeClass('checked');
  487.         }
  488.         try {
  489.             preset[source].filters[filter_name].enabled = enabled;
  490.         } catch(e) {}
  491.     }
  492.  
  493.     //########################################################################
  494.     // QUIZ DIALOG
  495.     //########################################################################
  496.  
  497.     //========================================================================
  498.     // install_css()
  499.     //------------------------------------------------------------------------
  500.     function install_css() {
  501.         $('head').append(
  502.             '<style id="ss_quiz_css" type="text/css">'+
  503.             '.noselect {-webkit-touch-callout:none; -webkit-user-select:none; -khtml-user-select:none; -moz-user-select: none; -ms-user-select:none; user-select: none;}'+
  504.  
  505.             '#ss_quiz [lang="ja"] {font-family: "Meiryo","Yu Gothic","Hiragino Kaku Gothic Pro","TakaoPGothic","Yu Gothic","ヒラギノ角ゴ Pro W3","メイリオ","Osaka","MS PGothic","ＭＳ Ｐゴシック",sans-serif;}'+
  506.             '#ss_quiz {position:fixed; z-index:12001; width:573px; background-color:#000; border-radius:8px; border:8px solid rgba(0,0,0,0.85); font-size:16px; line-height:16px; font-family:"Helvetica Neue", Helvetica, Arial, sans-serif;}'+
  507.             '#ss_quiz * {text-align:center;}'+
  508.  
  509.             '#ss_quiz .titlebar {cursor:move; text-align:left; padding-bottom:4px; font-size:1.125em; font-weight:bold; line-height:1.125em; background-color:rgba(0,0,0,0.85); color:#ddd;}'+
  510.             '#ss_quiz .titlebar .button {display:inline-block; float:right; height:20px; width:20px; line-height:1em; cursor:pointer; border:1px solid rgba(255,255,255,0.2); border-radius:4px;}'+
  511.  
  512.             '#ss_quiz .prev, #ss_quiz .next {display:inline-block; width:80px; color:#fff; line-height:8em; cursor:pointer;}'+
  513.             '#ss_quiz .prev:hover {background-image:linear-gradient(to left, rgba(0,0,0,0), rgba(0,0,0,0.2));}'+
  514.             '#ss_quiz .next:hover {background-image:linear-gradient(to right, rgba(0,0,0,0), rgba(0,0,0,0.2));}'+
  515.             '#ss_quiz .prev {float:left;}'+
  516.             '#ss_quiz .next {float:right;}'+
  517.  
  518.             '#ss_quiz .cfgbar {background-color:rgba(32,32,32,0.85); padding:4px 0; border-bottom:1px solid #444;}'+
  519.             '#ss_quiz .cfgbar select {margin:0; background:transparent; color:rgba(255,255,255,0.5); border:1px solid #777; width:248px; height:2em; text-align:left; font-size:0.875em; border-radius:4px; padding:4px 6px;}'+
  520.             '#ss_quiz .cfgbar option {color:#000;}'+
  521.             '#ss_quiz .cfgbar .button {display:inline-block; width:24px; height:24px; cursor:pointer; color:#777; font-size:24px; vertical-align:middle;}'+
  522.             '#ss_quiz .cfgbar .button:hover {color:#ccc;}'+
  523.  
  524.             '#ss_quiz .statusbar {line-height:1em; color:rgba(255,255,255,0.5); background-color:rgba(32,32,32,0.85);}'+
  525.  
  526.             '#ss_quiz .settings {float:left; padding:6px 8px; text-align:left; line-height:1.5em; font-size:0.875em;}'+
  527.             '#ss_quiz .settings span[class*="icon-"] {font-size:1.3em; padding:0 2px;}'+
  528.             '#ss_quiz .settings .ss_audio {padding-left:0; padding-right:4px;}'+
  529.             '#ss_quiz .settings .ss_done {font-size:1.25em;}'+
  530.             '#ss_quiz .settings .ss_pair {font-weight:bold;}'+
  531.             '#ss_quiz .settings span {cursor:pointer;}'+
  532.             '#ss_quiz .settings > span:hover {color:rgba(255,255,204,0.8);}'+
  533.             '#ss_quiz .settings span.active {color:#ffc;}'+
  534.  
  535.             '#ss_quiz .stats_labels {text-align:right; font-family:monospace; font-size:14px; line-height:14px; white-space:pre;}'+
  536.             '#ss_quiz .stats {float:right; text-align:right; color:rgba(255,255,255,0.8); font-family:monospace; padding:0 5px;}'+
  537.  
  538.             '#ss_quiz .icon-audio:before {content:"\\f028";}'+
  539.  
  540.             '#ss_quiz .ss_audio {display:inline-block;box-sizing:border-box;width:22px;text-align:left}'+
  541.             '#ss_quiz .ss_audio:before {content:"\\f026";}'+
  542.             '#ss_quiz .ss_audio.active:before {content:"\\f028";}'+
  543.             '#ss_quiz .ss_audio.mute {color:rgba(255,0,0,0.8);}'+
  544.             '#ss_quiz .ss_audio.mute:hover {color:rgba(255,127,127,0.8);}'+
  545.  
  546.             '#ss_quiz[data-qtype="characters"] .question {font-size:2em;}'+
  547.             '#ss_quiz .question svg.radical {width:1em;height:1em;stroke:#fff;stroke-width:68;stroke-linecap:square;stroke-miterlimit:2;fill:none;}'+
  548.  
  549.             '#ss_quiz .atype {font-size:1.75em; line-height:2em; cursor:default; color:#fff; border-top:1px solid #000; border-bottom:1px solid #000;}'+
  550.             '#ss_quiz[data-atype="reading"] .atype {color:#fff; text-shadow:-1px -1px 0 #000; border-top:1px solid #555; border-bottom:1px solid #000; background-color:#2e2e2e; background-image:linear-gradient(to bottom, #3c3c3c, #1a1a1a); background-repeat:repeat-x;}'+
  551.             '#ss_quiz[data-atype="meaning"] .atype {color:#555; text-shadow:-1px -1px 0 rgba(255,255,255,0.1); border-top:1px solid #d5d5d5; border-bottom:1px solid #c8c8c8; background-color:#e9e9e9; background-image:linear-gradient(to bottom, #eee, #e1e1e1); background-repeat:repeat-x;}'+
  552.  
  553.             '#ss_quiz .help {display:none;'+
  554.             '  position:absolute; top:3%; left:13%; width:74%; box-sizing:border-box; border:2px solid #000; border-radius:15px; padding:4px;'+
  555.             '  color:#555; text-shadow:2px 2px 0 rgba(0,0,0,0.13); background-color:rgba(255,255,255,0.9); font-size:0.8em; line-height:1.2em;'+
  556.             '}'+
  557.             '#ss_quiz.help .help {display:inherit;}'+
  558.  
  559.             '#ss_quiz .message {visibility:hidden;'+
  560.             '  position:absolute; bottom:3%; left:13%; width:74%; box-sizing:border-box; border:2px solid #000; border-radius:15px; padding:4px;'+
  561.             '  color:#555; text-shadow:2px 2px 0 rgba(0,0,0,0.13); background-color:rgba(255,255,255,0.9); font-size:0.6em; line-height:1.2em; opacity:0; transition:visibility 0.25s, opacity 0.25s linear;'+
  562.             '}'+
  563.             '#ss_quiz.message .message {visibility:visible; opacity:1; transition:visibility 0s, opacity 0.25s linear;}'+
  564.  
  565.             '#ss_quiz .answer {font-size:1.75em; background-color:#ddd; padding:8px;}'+
  566.             '#ss_quiz .answer input {'+
  567.             '  width:100%; background-color:#fff; height:2em; margin:0; border:2px solid #000; padding:0;'+
  568.             '  box-sizing:border-box; border-radius:0; font-size:1em;'+
  569.             '}'+
  570.             '#ss_quiz[data-result="correct"] .answer input {color:#fff; background-color:#8c8; text-shadow:2px 2px 0 rgba(0,0,0,0.2);}'+
  571.             '#ss_quiz[data-result="incorrect"] .answer input {color:#fff; background-color:#f03; text-shadow:2px 2px 0 rgba(0,0,0,0.2);}'+
  572.  
  573.             '#ss_quiz .btn.requiz {position:absolute; top:6px; right:6px; padding-left:6px; padding-right:6px;}'+
  574.  
  575.             '#ss_quiz .qwrap {height:8em; position:relative; clear:both; font-size:1.75em}'+
  576.             '#ss_quiz[data-itype="radical"] .qwrap, #ss_quiz[data-itype="radical"] .summary .que {background-color:#0af;}'+
  577.             '#ss_quiz[data-itype="kanji"] .qwrap, #ss_quiz[data-itype="kanji"] .summary .que {background-color:#f0a;}'+
  578.             '#ss_quiz[data-itype="vocabulary"] .qwrap, #ss_quiz[data-itype="vocabulary"] .summary .que {background-color:#a0f;}'+
  579.  
  580.             '#ss_quiz .qwrap > .center {display:none; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);}'+
  581.  
  582.             '#ss_quiz[data-mode="loading"] .qwrap {background-color:#ccc; opacity:0.5;}'+
  583.             '#ss_quiz[data-mode="loading"] .answer {opacity:0.5;}'+
  584.  
  585.             '#ss_quiz[data-mode="question"] .question {display:block;}'+
  586.             '#ss_quiz .question {overflow-x:auto; overflow-y:hidden; color:#fff; text-align:center; line-height:1.1em; font-size:1em; cursor:default;}'+
  587.             '#ss_quiz .question .icon-audio {font-size:2.5em; cursor:pointer;}'+
  588.  
  589.             '#ss_quiz[data-mode="summary"] .summary {display:block;}'+
  590.             '#ss_quiz .summary {display:none; position:absolute; width:74%; height:100%; background-color:rgba(0,0,0,0.7); color:#fff; font-weight:bold;}'+
  591.             '#ss_quiz .summary h3 {'+
  592.             '  background-image:linear-gradient(to bottom, #3c3c3c, #1a1a1a); background-repeat:repeat-x;'+
  593.             '  border-top:1px solid #777; border-bottom:1px solid #000; margin:0; box-sizing:border-box;'+
  594.             '  text-shadow:2px 2px 0 rgba(0,0,0,0.5); color:#fff; font-size:0.8em; font-weight:bold; line-height:40px;'+
  595.             '}'+
  596.             '#ss_quiz .summary .errors {position:absolute; top:40px; bottom:0px; width:100%; margin:0; overflow-y:auto; list-style-type:none;}'+
  597.             '#ss_quiz .summary li {margin:4px 0 0 0; font-size:0.6em; font-weight:bold; line-height:1.4em;}'+
  598.  
  599.             '#ss_quiz .summary .errors span {display:inline-block; padding:2px 4px 0px 4px; border-radius:4px; line-height:1.1em; max-width:50%; vertical-align:middle; cursor:pointer;}'+
  600.             '#ss_quiz .summary .ans {background-color:#fff; color:#000;}'+
  601.             '#ss_quiz .summary .wrong {color:#f22;}'+
  602.  
  603.  
  604.             //--[ Settings dialog ]-------------------------------------------
  605.             '#wkof_ds div[role="dialog"][aria-describedby="wkofs_ss_quiz"] {z-index:12002;}'+
  606.  
  607.             '#wkofs_ss_quiz.wkof_settings .pre_list_btn_grp {width:60px;float:left;margin-right:2px;}'+
  608.             '#wkofs_ss_quiz.wkof_settings .pre_list_btn_grp button {width:100%; padding:2px 0;}'+
  609.             '#wkofs_ss_quiz.wkof_settings .pre_list_btn_grp button:not(:last-child) {margin-bottom:2px;}'+
  610.             '#wkofs_ss_quiz.wkof_settings .pre_list_wrap {display:flex;}'+
  611.             '#wkofs_ss_quiz.wkof_settings .pre_list_wrap .right {flex:1;}'+
  612.             '#wkofs_ss_quiz.wkof_settings .pre_list_wrap .list {overflow:auto;height:100%;}'+
  613.  
  614.             '#wkofs_ss_quiz.wkof_settings .filters .row {border-top:1px solid #ccc; padding:6px 4px; margin-bottom:0;}'+
  615.             '#wkofs_ss_quiz.wkof_settings .filters .row:not(.checked) {padding-top:0px;padding-bottom:0px;}'+
  616.             '#wkofs_ss_quiz .filters .row .enable input[type="checkbox"] {margin:0;}'+
  617.             '#wkofs_ss_quiz.narrow .filters .row.checked .right input[type="checkbox"]:after {content:"⇐yes?";margin-left:28px;line-height:30px;}'+
  618.             '#wkofs_ss_quiz .filters .row.checked {background-color:#f7f7f7;}'+
  619.             '#wkofs_ss_quiz .filters .row:not(.checked) {opacity:0.5;}'+
  620.             '#wkofs_ss_quiz .filters .row .enable {display:inline; margin:0; float:left;}'+
  621.             '#wkofs_ss_quiz:not(.narrow) .filters .left {width:170px;}'+
  622.  
  623.             '#wkofs_ss_quiz .filters .row .enable input[type="checkbox"] {margin:0 4px 0 0;}'+
  624.             '#wkofs_ss_quiz .filters .row:not(.checked) .right {display:none;}'+
  625.             '#wkofs_ss_quiz .filters .row:not(.checked) .left label {text-align:left;}'+
  626.             '#wkofs_ss_quiz.narrow .filters .row .left {width:initial;}'+
  627.             '#wkofs_ss_quiz.narrow .filters .row .left label {line-height:30px;}'+
  628.             '#wkofs_ss_quiz #ss_quiz_ipre_srcs .src_enable .left {width:initial;}'+
  629.             '#wkofs_ss_quiz #ss_quiz_ipre_srcs .src_enable .left label {text-align:left;width:initial;line-height:30px;}'+
  630.             '#wkofs_ss_quiz #ss_quiz_ipre_srcs .src_enable .right {float:left; margin:0 4px;width:initial;}'+
  631.             //----------------------------------------------------------------
  632.  
  633.             '</style>'
  634.         );
  635.     }
  636.  
  637.     //========================================================================
  638.     // open_quiz()
  639.     //------------------------------------------------------------------------
  640.     var quiz_setup_state = 'init';
  641.     function open_quiz(custom_options) {
  642.         if (quiz_setup_state === 'init') {
  643.             quiz_setup_state = 'loading';
  644.             install_css();
  645.             wkof.include('ItemData, Settings');
  646.             wkof.ready('ItemData, Settings').then(function(){
  647.                 return wkof.Settings.load('ss_quiz');
  648.             }).then(function(){
  649.                 quiz_setup_state = 'ready';
  650.                 init_settings();
  651.                 open_quiz(custom_options);
  652.             });
  653.         }
  654.         if (quiz_setup_state !== 'ready') return;
  655.  
  656.         var quiz_html =
  657.             '<div id="ss_quiz" class="dialog" data-itype="loading" data-atype="meaning" data-mode="question">'+
  658.             '  <div class="titlebar noselect">Self-Study Quiz<span class="button" title="Close the quiz.\nHotkey: Rapid triple-tap [Esc]">x</span></div>'+
  659.             '  <div class="cfgbar">'+
  660.             '    <select id="ss_quiz_qna" title="Choose what quiz questions you want to be asked"></select>'+
  661.             '    <select id="ss_quiz_source" title="Choose what items you want to be quizzed on"></select>'+
  662.             '    <span class="icon-repeat shuffle button" title="Shuffle Quiz (Ctrl-S)\nDouble-click to reset Round counter"></span>'+
  663.             '    <span class="icon-cog config button" title="Configure presets"></span>'+
  664.             '  </div>'+
  665.             '  <div class="statusbar">'+
  666.             '    <div class="settings noselect">'+
  667.             '      <span class="icon-bolt ss_lightning" title="Lightning Mode: Skip <enter> on correct answers (Ctrl-L)"></span>'+
  668.             '      <span class="icon-audio ss_audio" title="Toggle when to play audio (Ctrl-Shift-A)\n* Red = Never play audio\n* Gray = Audio questions only\n* Yellow = Audio questions, After correct reading, Opening help for reading\n\nTo play audio immediately, press (Ctrl-A)"></span>'+
  669.             '      <span class="icon-question-sign ss_help" title="Help: Peek at item info (F1, Ctrl-H, or ?)"></span>'+
  670.             '      <span class="icon-step-forward ss_done" title="End the quiz and show summary (Esc or Ctrl-E)"></span><br />'+
  671.             '      <span class="ss_pair" title="Pairing mode: Group reading and meaning together (Ctrl-P)">Pairing: <span class="data">Disabled</span></span>'+
  672.             '    </div>'+
  673.             '    <div class="stats"></div>'+
  674.             '    <div class="stats_labels">Round:<br>Remaining:<br>Correct:<br>Incorrect:</div>'+
  675.             '  </div>'+
  676.             '  <div class="qwrap">'+
  677.             '    <div class="prev" title="Previous question (Ctrl-Left)"><i class="icon-chevron-left"></i></div>'+
  678.             '    <div class="next" title="Next question (Ctrl-Right)"><i class="icon-chevron-right"></i></div>'+
  679.             '    <div class="question center"></div>'+
  680.             '    <div class="help"></div>'+
  681.             '    <div class="message"></div>'+
  682.             '    <div class="summary center">'+
  683.             '      <h3>Summary - <span class="percent">100%</span> Correct <button class="btn requiz" title="Re-quiz wrong items">Re-quiz</button></h3>'+
  684.             '      <ul class="errors"></ul>'+
  685.             '    </div>'+
  686.             '  </div>'+
  687.             '  <div class="atype">Loading...</div>'+
  688.             '  <div class="answer"><input type="text" lang="en" value=""></div>'+
  689.             '</div>';
  690.  
  691.         if (quiz.dialog) quiz.close();
  692.         var dialog = (quiz.dialog = $(quiz_html));
  693.  
  694.         var settings = quiz.settings;
  695.         init_custom_options(custom_options);
  696.         populate_presets(dialog.find('#ss_quiz_qna'), settings.qpresets, settings.active_qpreset);
  697.         populate_presets(dialog.find('#ss_quiz_source'), settings.ipresets, settings.active_ipreset);
  698.  
  699.         wkof.Settings.background.open();
  700.         $('#wkof_ds').append(dialog);
  701.  
  702.         dialog.css('top', Math.max(0,Math.floor((window.innerHeight - dialog.outerHeight()) / 2)));
  703.         dialog.css('left', Math.floor((window.innerWidth - dialog.outerWidth()) / 2));
  704.  
  705.         // Initialize settings
  706.         var settings_bar = dialog.find('.statusbar .settings');
  707.         if (settings.lightning_mode === true) settings_bar.find('.ss_lightning').addClass('active');
  708.         if (settings.repeat_quiz === true) settings_bar.find('.ss_repeat').addClass('active');
  709.         if (settings.shuffle_on_repeat === true) settings_bar.find('.ss_shuffle').addClass('active');
  710.         if (settings.play_audio === true) settings_bar.find('.ss_audio').addClass('active');
  711.         if (settings.mute_audio === true) settings_bar.find('.ss_audio').addClass('mute');
  712.         toggle_pairing(null, true /* initialize */);
  713.  
  714.         // Events
  715.         dialog.find('.settings .ss_lightning').on('click', toggle_lightning);
  716.         dialog.find('.settings .ss_audio').on('click', toggle_audio);
  717.         dialog.find('.settings .ss_help').on('click', toggle_help);
  718.         dialog.find('.settings .ss_pair').on('click', toggle_pairing);
  719.         dialog.find('.settings .ss_done').on('click', process_escape);
  720.         dialog.find('.prev').on('click', quiz.prev);
  721.         dialog.find('.next').on('click', quiz.next);
  722.         dialog.find('.titlebar').on('mousedown touchstart', drag);
  723.         dialog.find('.cfgbar .button.shuffle').on('click', manual_shuffle);
  724.         dialog.find('.cfgbar .button.config').on('click', open_quiz_settings);
  725.         dialog.find('.titlebar .button').on('click', close_quiz);
  726.         dialog.find('.summary .requiz').on('click', quiz.requiz);
  727.         dialog.find('.question').on('click', '.icon-audio', play_audio.bind(null,true,null));
  728.         $('#ss_quiz_qna').on('change', qpreset_changed);
  729.         $('#ss_quiz_source').on('change', ipreset_changed);
  730.         $('body').on('keydown.ss_quiz_key keypress.ss_quiz_key', quiz_key_handler);
  731.         freeze_body();
  732.  
  733.         set_mode('loading');
  734.         fetch_items().then(quiz.start);
  735.     }
  736.  
  737.     //========================================================================
  738.     // init_custom_options()
  739.     //------------------------------------------------------------------------
  740.     function init_custom_options(custom) {
  741.         if (!custom) {
  742.             quiz.custom = {
  743.                 has_ipreset: false,
  744.                 using_ipreset: false,
  745.                 has_qpreset: false,
  746.                 using_qpreset: false,
  747.             }
  748.             return;
  749.         }
  750.         quiz.custom = custom;
  751.         if (custom.qpreset) {
  752.             quiz.custom.has_qpreset = true;
  753.             quiz.custom.using_qpreset = true;
  754.         }
  755.         if (custom.ipreset) {
  756.             quiz.custom.has_ipreset = true;
  757.             quiz.custom.using_ipreset = true;
  758.         }
  759.     }
  760.  
  761.     //========================================================================
  762.     // close_quiz()
  763.     //------------------------------------------------------------------------
  764.     function close_quiz(e) {
  765.         unfreeze_body();
  766.         $('body').off('.ss_quiz_key');
  767.         quiz.dialog.remove();
  768.         wkof.Settings.background.close();
  769.     }
  770.  
  771.     var body_scroll_y;
  772.     function freeze_body() {
  773.         body_scroll_y = window.scrollY;
  774.         $('body').css('overflow', 'hidden').scrollTop(body_scroll_y);
  775.     }
  776.     function unfreeze_body() {
  777.         $('body').css('overflow','unset');
  778.         window.scroll({top:body_scroll_y});
  779.     }
  780.  
  781.     //========================================================================
  782.     // qpreset_changed()
  783.     //------------------------------------------------------------------------
  784.     function qpreset_changed(e) {
  785.         var settings = quiz.settings;
  786.         var selected = e.target.selectedOptions[0].attributes.name.value;
  787.         if (selected === 'custom') {
  788.             quiz.custom.using_qpreset = true;
  789.         } else {
  790.             quiz.custom.using_qpreset = false;
  791.             settings.active_qpreset = selected;
  792.             wkof.Settings.save('ss_quiz');
  793.         }
  794.         quiz.start();
  795.     }
  796.  
  797.     //========================================================================
  798.     // ipreset_changed()
  799.     //------------------------------------------------------------------------
  800.     function ipreset_changed(e) {
  801.         var settings = quiz.settings;
  802.         var selected = e.target.selectedOptions[0].attributes.name.value;
  803.         if (selected === 'custom') {
  804.             quiz.custom.using_ipreset = true;
  805.         } else {
  806.             quiz.custom.using_ipreset = false;
  807.             settings.active_ipreset = selected;
  808.             wkof.Settings.save('ss_quiz');
  809.         }
  810.         fetch_items().then(quiz.start);
  811.     }
  812.  
  813.     //========================================================================
  814.     // populate_presets()
  815.     //------------------------------------------------------------------------
  816.     function populate_presets(elem, presets, active_preset) {
  817.         var html = '';
  818.         for (var idx in presets) {
  819.             var preset = presets[idx];
  820.             var name = preset.name.replace(/</g,'&lt;').replace(/>/g,'&gt;');
  821.             html += '<option name="'+idx+'">'+name+'</option>';
  822.         }
  823.         var elem_name = elem.attr('id')
  824.         if (elem_name === 'ss_quiz_qna' && quiz.custom.has_qpreset) {
  825.             html += '<option name="custom">('+quiz.custom.qpreset.name+')</option>';
  826.             if (quiz.custom.using_qpreset) active_preset = presets.length;
  827.         } else if (elem_name === 'ss_quiz_source' && quiz.custom.has_ipreset) {
  828.             html += '<option name="custom">('+quiz.custom.ipreset.name+')</option>';
  829.             if (quiz.custom.using_ipreset) active_preset = presets.length;
  830.         }
  831.         elem.html(html);
  832.         elem.children().eq(active_preset).prop('selected', true);
  833.     }
  834.  
  835.     //########################################################################
  836.     // QUIZ DATA
  837.     //########################################################################
  838.  
  839.     var quiz = {
  840.         // Dialogs
  841.         dialog: null,
  842.         settings_dialog: null,
  843.  
  844.         // Item Lists
  845.         items: [],
  846.         group_list: [],
  847.         serial_list: [],
  848.         index: null,
  849.  
  850.         // Status
  851.         showing_help: false,
  852.         mode: 'loading',
  853.  
  854.         // Question Info
  855.         qinfo: {
  856.             load: load_qinfo,
  857.             prep: prep_qinfo,
  858.             cache: {},
  859.         },
  860.  
  861.         // Stats
  862.         stats: {
  863.             round: 1,
  864.             total: 0,
  865.             correct: 0,
  866.             incorrect: 0,
  867.         },
  868.  
  869.         // Functions
  870.         start: start_quiz,
  871.         shuffle: shuffle_quiz,
  872.         requiz: requiz,
  873.         ask: ask_question,
  874.         submit: submit_answer,
  875.         prev: prev_question,
  876.         next: next_question,
  877.         close: close_quiz,
  878.     };
  879.     gobj.open = open_quiz;
  880.  
  881.     //========================================================================
  882.     // fetch_items()
  883.     //------------------------------------------------------------------------
  884.     function fetch_items() {
  885.         var settings = quiz.settings;
  886.         var ipreset = (quiz.custom.using_ipreset ? quiz.custom.ipreset.content : settings.ipresets[settings.active_ipreset].content);
  887.  
  888.         set_mode('loading');
  889.         var config = {};
  890.         for (var src_name in ipreset) {
  891.             var src_preset = ipreset[src_name];
  892.             if (!src_preset.enabled) continue;
  893.             if (!wkof.ItemData.registry.sources[src_name]) continue;
  894.             var src_cfg = {};
  895.             config[src_name] = src_cfg;
  896.             src_cfg.filters = {};
  897.             if (src_name === 'wk_items') src_cfg.options = {study_materials: true};
  898.             var ipre_filters = src_preset.filters;
  899.             for (var flt_name in ipre_filters) {
  900.                 var ipre_flt = ipre_filters[flt_name];
  901.                 if (!ipre_flt.enabled) continue;
  902.                 if (!wkof.ItemData.registry.sources[src_name].filters[flt_name]) continue;
  903.                 src_cfg.filters[flt_name] = {value: ipre_flt.value};
  904.                 if (ipre_flt.invert === true) src_cfg.filters[flt_name].invert = true;
  905.             }
  906.         }
  907.         return wkof.ItemData.get_items(config)
  908.         .then(function(items){
  909.             quiz.items = items;
  910.         });
  911.     }
  912.  
  913.     //========================================================================
  914.     // shuffle_quiz()
  915.     //------------------------------------------------------------------------
  916.     function shuffle_quiz() {
  917.         var settings = quiz.settings;
  918.         var qpreset = (quiz.custom.using_qpreset ? quiz.custom.qpreset.content : settings.qpresets[settings.active_qpreset].content);
  919.         var pairing = settings.pairing || 'disabled';
  920.  
  921.         var valid_question_types = {
  922.             char2read: {radical:false, kanji:true,  vocabulary:true},
  923.             char2mean: {radical:true,  kanji:true,  vocabulary:true},
  924.             read2mean: {radical:false, kanji:false, vocabulary:true},
  925.             mean2read: {radical:false, kanji:false, vocabulary:true},
  926.             aud2read:  {radical:false, kanji:false, vocabulary:true},
  927.             aud2mean:  {radical:false, kanji:false, vocabulary:true},
  928.         };
  929.  
  930.         var id, idx, item, qset;
  931.         var grp_list = quiz.group_list = [];
  932.         quiz.stats.total = 0;
  933.         switch (pairing) {
  934.             case 'disabled':
  935.                 var qna = ['char2mean','char2read','read2mean','mean2read','aud2mean','aud2read'];
  936.                 for (id in quiz.items) {
  937.                     item = quiz.items[id];
  938.                     for (idx in qna) {
  939.                         var qtype = qna[idx];
  940.                         if (valid(qtype)) {
  941.                             grp_list.push({item:item, qna:[qtype], order:Math.random()});
  942.                         }
  943.                     }
  944.                 }
  945.                 break;
  946.  
  947.             case 'reading_first':
  948.                 for (id in quiz.items) {
  949.                     item = quiz.items[id];
  950.                     qset = [];
  951.                     if (valid('char2read')) qset.push('char2read');
  952.                     if (valid('char2mean')) qset.push('char2mean');
  953.                     if (qset.length > 0) grp_list.push({item:item, qna:qset, order:Math.random()});
  954.                     if (valid('mean2read')) grp_list.push({item:item, qna:['mean2read'], order:Math.random()});
  955.                     if (valid('read2mean')) grp_list.push({item:item, qna:['read2mean'], order:Math.random()});
  956.                     qset = [];
  957.                     if (valid('aud2read')) qset.push('aud2read');
  958.                     if (valid('aud2mean')) qset.push('aud2mean');
  959.                     if (qset.length > 0) grp_list.push({item:item, qna:qset, order:Math.random()});
  960.                 }
  961.                 break;
  962.  
  963.             case 'meaning_first':
  964.                 for (id in quiz.items) {
  965.                     item = quiz.items[id];
  966.                     qset = [];
  967.                     if (valid('char2mean')) qset.push('char2mean');
  968.                     if (valid('char2read')) qset.push('char2read');
  969.                     if (qset.length > 0) grp_list.push({item:item, qna:qset, order:Math.random()});
  970.                     if (valid('read2mean')) grp_list.push({item:item, qna:['read2mean'], order:Math.random()});
  971.                     if (valid('mean2read')) grp_list.push({item:item, qna:['mean2read'], order:Math.random()});
  972.                     qset = [];
  973.                     if (valid('aud2mean')) qset.push('aud2mean');
  974.                     if (valid('aud2read')) qset.push('aud2read');
  975.                     if (qset.length > 0) grp_list.push({item:item, qna:qset, order:Math.random()});
  976.                 }
  977.                 break;
  978.  
  979.             case 'random_order':
  980.                 for (id in quiz.items) {
  981.                     item = quiz.items[id];
  982.                     qset = [];
  983.                     if (Math.random() < 0.5) {
  984.                         if (valid('char2read')) qset.push('char2read');
  985.                         if (valid('char2mean')) qset.push('char2mean');
  986.                     } else {
  987.                         if (valid('char2mean')) qset.push('char2mean');
  988.                         if (valid('char2read')) qset.push('char2read');
  989.                     }
  990.                     if (qset.length > 0) grp_list.push({item:item, qna:qset, order:Math.random()});
  991.                     if (valid('mean2read')) grp_list.push({item:item, qna:['mean2read'], order:Math.random()});
  992.                     if (valid('read2mean')) grp_list.push({item:item, qna:['read2mean'], order:Math.random()});
  993.                     qset = [];
  994.                     if (Math.random() < 0.5) {
  995.                         if (valid('aud2read')) qset.push('aud2read');
  996.                         if (valid('aud2mean')) qset.push('aud2mean');
  997.                     } else {
  998.                         if (valid('aud2mean')) qset.push('aud2mean');
  999.                         if (valid('aud2read')) qset.push('aud2read');
  1000.                     }
  1001.                     if (qset.length > 0) grp_list.push({item:item, qna:qset, order:Math.random()});
  1002.                 }
  1003.                 break;
  1004.         }
  1005.  
  1006.         grp_list.sort(function(a,b){return a.order - b.order;});
  1007.         var serial_list = quiz.serial_list = [];
  1008.         for (var idx1 in grp_list) {
  1009.             for (var idx2 in grp_list[idx1].qna) {
  1010.                 serial_list.push([idx1, idx2]);
  1011.             }
  1012.         }
  1013.         quiz.qinfo.cache = {};
  1014.         quiz.stats.real_total = quiz.stats.total;
  1015.         if (settings.max_quiz_size > 0) quiz.stats.total = Math.min(quiz.stats.total, settings.max_quiz_size);
  1016.  
  1017.         function valid(qtype) {
  1018.             var valid = ((qpreset[qtype] === true) && (valid_question_types[qtype][item.object] === true));
  1019.             if (valid) quiz.stats.total++;
  1020.             return valid;
  1021.         }
  1022.     }
  1023.  
  1024.     //########################################################################
  1025.     // QUIZ
  1026.     //########################################################################
  1027.  
  1028.     //========================================================================
  1029.     // jw_distance() - Jaro-Winkler Distance
  1030.     //------------------------------------------------------------------------
  1031.     function jw_distance(a, c) {var h,b,d,k,e,g,f,l,n,m,p;if(a.length>c.length) {c=[c,a];a=c[0];c=c[1];}k=~~Math.max(0,c.length/2-1);e=[];g=[];b=n=0;for(p=a.length;n<p;b=++n){for(h=a[b],l=Math.max(0,b-k),f=Math.min(b+k+1,c.length),d=m=l;l<=f?m<f:m>f;d=l<=f?++m:--m){if(g[d]===undefined&&h===c[d]){e[b]=h;g[d]=c[d];break;}}}e=e.join("");g=g.join("");d=e.length;if(d){b=f=k=0;for(l=e.length;f<l;b=++f){h=e[b];if(h!==g[b])k++;}b=g=e=0;for(f=a.length;g<f;b=++g){if(h=a[b],h===c[b])e++;else	break;}a=(d/a.length+d/c.length+(d-~~(k/2))/d)/3;a+=0.1*Math.min(e,4)*(1-a);}else{a=0;}return	a;}
  1032.  
  1033.     //========================================================================
  1034.     // to_title_case() - Make first letter of each word upper-case.
  1035.     //------------------------------------------------------------------------
  1036.     function to_title_case(str) {return str.replace(/\w\S*/g, function(txt){return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();});}
  1037.  
  1038.     //========================================================================
  1039.     // start_quiz()
  1040.     //------------------------------------------------------------------------
  1041.     function start_quiz(options) {
  1042.         if (!options) options = {};
  1043.         if (options.keep_round_count !== true) options.keep_round_count = false; // Default 'false'
  1044.         if (!options.keep_round_count) quiz.stats.round = 1;
  1045.         quiz.stats.correct = 0;
  1046.         quiz.stats.incorrect = 0;
  1047.         quiz.index = 0;
  1048.         quiz.shuffle();
  1049.         if (quiz.stats.total === 0) return set_mode('no_items');
  1050.         set_mode('question');
  1051.     }
  1052.  
  1053.     //========================================================================
  1054.     // requiz()
  1055.     //------------------------------------------------------------------------
  1056.     function requiz() {
  1057.         quiz.do_requiz = true;
  1058.         quiz.next();
  1059.     }
  1060.  
  1061.     //========================================================================
  1062.     // set_mode()
  1063.     //------------------------------------------------------------------------
  1064.     function set_mode(mode) {
  1065.         var dialog = quiz.dialog;
  1066.         if (mode === 'previous') mode = quiz.last_mode;
  1067.         dialog.attr('data-mode', mode);
  1068.         switch (mode) {
  1069.             case 'loading':
  1070.                 dialog.attr('data-itype', 'loading');
  1071.                 dialog.attr('data-atype', 'loading');
  1072.                 dialog.find('.atype').html('Loading...');
  1073.                 break;
  1074.  
  1075.             case 'no_items':
  1076.                 dialog.attr('data-itype', 'loading');
  1077.                 dialog.attr('data-atype', 'reading');
  1078.                 dialog.find('.atype').html('No questions found!');
  1079.                 break;
  1080.  
  1081.             case 'question':
  1082.                 ask_question();
  1083.                 break;
  1084.  
  1085.             case 'summary':
  1086.                 dialog.attr('data-atype', 'reading');
  1087.                 dialog.find('.atype').html('[Enter] for new quiz, [Esc] to return');
  1088.                 dialog.find('.answer input').val('').prop('readonly', true);
  1089.                 dialog.attr('data-result', '');
  1090.                 populate_errors();
  1091.                 break;
  1092.         }
  1093.         if (quiz.mode !== quiz.last_mode) quiz.last_mode = quiz.mode;
  1094.         quiz.mode = mode;
  1095.     }
  1096.  
  1097.     function is_svg(img) {return (img.content_type === 'image/svg+xml') && (img.metadata.inline_styles === false);}
  1098.  
  1099.     //========================================================================
  1100.     // ask_question()
  1101.     //------------------------------------------------------------------------
  1102.     function ask_question(erase_old_answer) {
  1103.         var dialog = quiz.dialog;
  1104.         var qinfo = quiz.qinfo.load(quiz.index);
  1105.  
  1106.         toggle_help('off');
  1107.         dialog.attr('data-itype', qinfo.item.type);
  1108.         dialog.attr('data-qtype', qinfo.question.type);
  1109.         dialog.attr('data-atype', qinfo.answer.type);
  1110.         if (quiz.message_timer) {
  1111.             clearTimeout(quiz.message_timer);
  1112.             delete quiz.message_timer;
  1113.         }
  1114.         dialog.removeClass('message');
  1115.  
  1116.         // Draw the question
  1117.         var question = dialog.find('.question');
  1118.         question.attr('lang', qinfo.question.lang);
  1119.         if (qinfo.question.html || qinfo.item.type !== 'radical') {
  1120.             question.html(qinfo.question.html);
  1121.         } else {
  1122.             qinfo.question.svg_promise.then(function(qinfo){
  1123.                 if (quiz.index === qinfo.index) question.html(qinfo.question.html);
  1124.             });
  1125.         }
  1126.  
  1127.         // Initialize the answer
  1128.         var input = $('#ss_quiz .answer input');
  1129.         var old_answer = get_user_answer(quiz.index);
  1130.         if (erase_old_answer) {
  1131.             if (old_answer[0] !== '') quiz.stats[old_answer[0]]--;
  1132.             update_quiz_stats();
  1133.             set_user_answer(quiz.index, '', '');
  1134.             old_answer = ['', ''];
  1135.         }
  1136.         if (old_answer[0] !== '') {
  1137.             dialog.attr('data-result', old_answer[0]);
  1138.             input.val(old_answer[1]).prop('readonly', true);
  1139.         } else {
  1140.             dialog.attr('data-result', '');
  1141.             input.val('').prop('readonly', false);
  1142.         }
  1143.  
  1144.         if (qinfo.answer.lang === 'ja') {
  1145.             if (input.attr('lang') !== 'ja') {
  1146.                 input.attr('lang', 'ja');
  1147.                 wanakana.bind(input[0], {IMEMode:true});
  1148.             }
  1149.         } else {
  1150.             if (input.attr('lang') === 'ja') {
  1151.                 input.attr('lang', 'en');
  1152.                 wanakana.unbind(input[0]);
  1153.             }
  1154.         }
  1155.  
  1156.         // Populate the help window
  1157.         dialog.find('.help').attr('lang',qinfo.answer.lang).html(to_title_case(qinfo.answer.good.join(', '))+(qinfo.answer.help_suffix || ''));
  1158.         dialog.find('.atype').html(qinfo.answer.html);
  1159.  
  1160.         // Update progress stats
  1161.         update_quiz_stats();
  1162.  
  1163.         // If question is audio, play audio now.
  1164.         if (!erase_old_answer && qinfo.question.type === 'audio') {
  1165.             play_audio(true /* force_play */, qinfo);
  1166.         }
  1167.  
  1168.         input.focus();
  1169.  
  1170.         quiz.qinfo.prep(quiz.index);
  1171.     }
  1172.  
  1173.     //========================================================================
  1174.     // play_audio()
  1175.     //------------------------------------------------------------------------
  1176.     function play_audio(force_play, qinfo) {
  1177.         if (quiz.settings.mute_audio) return;
  1178.         if (!force_play && !quiz.settings.play_audio) return;
  1179.         if (!qinfo) qinfo = quiz.qinfo.load(quiz.index);
  1180.         if (!qinfo) return;
  1181.         if (!qinfo.question.audio_promise) return;
  1182.         qinfo.question.audio_promise.then(function(qinfo){
  1183.             if (!((quiz.index === qinfo.index) ||
  1184.                   (quiz.settings.lightning_mode && quiz.index === (qinfo.index + 1)))) return;
  1185.             qinfo.question.audio.currentTime = 0;
  1186.             qinfo.question.audio.play();
  1187.         });
  1188.     }
  1189.  
  1190.     //========================================================================
  1191.     // load_qinfo()
  1192.     //------------------------------------------------------------------------
  1193.     function load_qinfo(index) {
  1194.         if (index < 0 || index >= quiz.stats.total) return null;
  1195.         if (!quiz.qinfo.cache[index]) populate_qinfo(index);
  1196.         return quiz.qinfo.cache[index];
  1197.     }
  1198.  
  1199.     //========================================================================
  1200.     // prep_qinfo()
  1201.     //------------------------------------------------------------------------
  1202.     function prep_qinfo(index) {
  1203.         Object.keys(quiz.qinfo.cache).forEach(function(cache_idx){
  1204.             if (cache_idx < index-2 || cache_idx > index+2) {
  1205.                 delete quiz.qinfo.cache[cache_idx];
  1206.             }
  1207.         });
  1208.         for (var ofs = 1; ofs <= 2; ofs++) {
  1209.             populate_qinfo(index+ofs);
  1210.         }
  1211.     }
  1212.  
  1213.     //========================================================================
  1214.     // populate_qinfo()
  1215.     //------------------------------------------------------------------------
  1216.     function populate_qinfo(index) {
  1217.         if (index < 0 || index >= quiz.stats.total) return;
  1218.         if (quiz.qinfo.cache[index]) return;
  1219.         var qinfo = {index:index, item:{}, question:{}, answer:{}};
  1220.         quiz.qinfo.cache[index] = qinfo;
  1221.  
  1222.         var grp_idx = quiz.serial_list[index];
  1223.         var group = quiz.group_list[grp_idx[0]];
  1224.         var item = group.item;
  1225.         var qnatype = group.qna[grp_idx[1]];
  1226.         qinfo.first_in_group = (grp_idx[1] == 0);
  1227.         qinfo.item.type = item.object;
  1228.         qinfo.item.object = item;
  1229.         qinfo.question.type = {
  1230.             char2read:'characters', char2mean:'characters', mean2read:'meaning',
  1231.             read2mean:'reading', aud2read:'audio', aud2mean:'audio'
  1232.         }[qnatype];
  1233.         qinfo.answer.type = {
  1234.             char2read:'reading', char2mean:'meaning', mean2read:'reading',
  1235.             read2mean:'meaning', aud2read:'reading', aud2mean:'meaning'
  1236.         }[qnatype];
  1237.         qinfo.answer.html = to_title_case(qinfo.item.type+' '+qinfo.answer.type);
  1238.  
  1239.         var synonyms = [];
  1240.         try {synonyms = item.study_materials.meaning_synonyms || [];} catch(e) {}
  1241.         var meanings = item.data.meanings.map(meaning => meaning.meaning);
  1242.         meanings = synonyms.concat(meanings).map(meaning => meaning.toLowerCase());
  1243.  
  1244.         if (qinfo.item.type === 'vocabulary') {
  1245.             qinfo.question.audio_promise = new Promise(function(resolve, reject){
  1246.                 qinfo.question.audio = new Audio();
  1247.                 qinfo.question.audio.oncanplaythrough = function(){
  1248.                     resolve(qinfo);
  1249.                 }
  1250.                 qinfo.question.audio.src = 'https://cdn.wanikani.com/subjects/audio/'+item.id+'-'+encodeURIComponent(item.data.characters)+'.mp3';
  1251.             });
  1252.         }
  1253.  
  1254.         switch (qinfo.question.type) {
  1255.             case 'characters':
  1256.                 qinfo.question.lang = 'ja';
  1257.                 if (qinfo.item.type === 'radical') {
  1258.                     var svg_url = item.data.character_images.filter(is_svg)[0].url;
  1259.                     qinfo.question.svg_promise = wkof.load_file(svg_url).then(function(svg){
  1260.                         qinfo.question.html = svg;
  1261.                         return qinfo;
  1262.                     });
  1263.                 } else {
  1264.                     qinfo.question.html = item.data.characters;
  1265.                 }
  1266.                 break;
  1267.  
  1268.             case 'reading':
  1269.                 qinfo.question.lang = 'ja';
  1270.                 qinfo.question.html = item.data.readings.map(reading => reading.reading).join(', ');
  1271.                 break;
  1272.  
  1273.             case 'meaning':
  1274.                 qinfo.question.lang = 'en';
  1275.                 qinfo.question.html = to_title_case(meanings.join(', '));
  1276.                 break;
  1277.  
  1278.             case 'audio':
  1279.                 qinfo.question.lang = 'ja';
  1280.                 qinfo.question.html = '<span class="icon-audio"></span>';
  1281.                 qinfo.answer.help_suffix = '<br><span lang="ja">('+item.data.characters+')</span>';
  1282.                 break;
  1283.         }
  1284.  
  1285.         var idx, idx2, reading;
  1286.         qinfo.answer.other = [];
  1287.         qinfo.answer.bad = [];
  1288.         qinfo.answer.reading_type = '';
  1289.         switch (qinfo.answer.type) {
  1290.             case 'reading':
  1291.                 qinfo.answer.good = [];
  1292.                 qinfo.answer.lang = 'ja';
  1293.                 for (idx in item.data.readings) {
  1294.                     reading = item.data.readings[idx];
  1295.                     if (qinfo.item.type === 'vocabulary' || reading.accepted_answer) {
  1296.                         qinfo.answer.good.push(reading.reading);
  1297.                         if (qinfo.item.type === 'kanji') {
  1298.                             qinfo.answer.reading_type = reading.type.replace('yomi','\'yomi');
  1299.                         }
  1300.                     } else {
  1301.                         qinfo.answer.other.push(reading.reading);
  1302.                     }
  1303.                     qinfo.answer.bad = meanings;
  1304.                 }
  1305.                 break;
  1306.  
  1307.             case 'meaning':
  1308.                 qinfo.answer.good = meanings;
  1309.                 qinfo.answer.lang = 'en';
  1310.                 if (!item.data.readings) break;
  1311.                 for (idx in item.data.readings) {
  1312.                     reading = item.data.readings[idx];
  1313.  
  1314.                     if (qinfo.item.type === 'vocabulary' || reading.accepted_answer) {
  1315.                         qinfo.answer.bad.push(reading.reading);
  1316.                     }
  1317.                 }
  1318.                 break;
  1319.         }
  1320.     }
  1321.  
  1322.     //========================================================================
  1323.     // get_user_answer()
  1324.     //------------------------------------------------------------------------
  1325.     function get_user_answer(index) {
  1326.         var grp_idx = quiz.serial_list[index];
  1327.         var group = quiz.group_list[grp_idx[0]];
  1328.         if (!group.answer || !group.answer[grp_idx[1]]) return ['', ''];
  1329.         return group.answer[grp_idx[1]];
  1330.     }
  1331.  
  1332.     //========================================================================
  1333.     // set_user_answer()
  1334.     //------------------------------------------------------------------------
  1335.     function set_user_answer(index, status, answer) {
  1336.         var grp_idx = quiz.serial_list[index];
  1337.         var group = quiz.group_list[grp_idx[0]];
  1338.         if (!group.answer) group.answer = [];
  1339.         group.answer[grp_idx[1]] = [status, answer];
  1340.     }
  1341.  
  1342.     //========================================================================
  1343.     // submit_answer()
  1344.     //------------------------------------------------------------------------
  1345.     function submit_answer() {
  1346.         var dialog = quiz.dialog;
  1347.         var input = $('#ss_quiz .answer input');
  1348.  
  1349.         var qinfo = quiz.qinfo.load(quiz.index);
  1350.         var item = qinfo.item.object;
  1351.         var itype = qinfo.item.type;
  1352.         var atype = qinfo.answer.type;
  1353.         var raw_answer = input.val();
  1354.         var answer = raw_answer;
  1355.         var action = 'fail';
  1356.         var msgcfg = quiz.settings.messages;
  1357.         var is_exact = true;
  1358.         var is_multi = false;
  1359.         var message;
  1360.  
  1361.         if (answer === '') {
  1362.             atype = 'ignore';
  1363.             action = 'shake';
  1364.         }
  1365.  
  1366.         switch (atype) {
  1367.             case 'reading':
  1368.                 answer = wanakana.toHiragana(answer);
  1369.                 if (qinfo.answer.good.indexOf(answer) >= 0 || qinfo.answer.good.indexOf(raw_answer) >= 0) {
  1370.                     action = 'correct';
  1371.                     if (qinfo.answer.good.length > 1) is_multi = true;
  1372.                     if (is_multi && msgcfg.show_multi_reading) message = 'This item has multiple readings';
  1373.                 } else if (itype === 'kanji' && qinfo.answer.other.indexOf(answer) >= 0) {
  1374.                     action = 'shake';
  1375.                     message = 'We\'re looking for the '+to_title_case(qinfo.answer.reading_type)+' reading';
  1376.                 } else {
  1377.                     var bad = qinfo.answer.bad.map(function(english){
  1378.                         return wanakana.toHiragana(english.toLowerCase());
  1379.                     });
  1380.                     if (bad.indexOf(answer) >= 0) {
  1381.                         action = 'shake';
  1382.                         message = 'We\'re looking for the reading, not the meaning';
  1383.                     } else if (!wanakana.isKana(answer)) {
  1384.                         action = 'shake';
  1385.                         message = 'Your answer contains invalid characters';
  1386.                     } else {
  1387.                         action = 'incorrect';
  1388.                     }
  1389.                 }
  1390.                 break;
  1391.  
  1392.             case 'meaning':
  1393.                 var is_correct = false;
  1394.                 is_exact = false;
  1395.                 answer = answer.toLowerCase();
  1396.                 var allow_typos = (quiz.settings.allow_typos === true);
  1397.                 for (var idx in qinfo.answer.good) {
  1398.                     var good_answer = qinfo.answer.good[idx];
  1399.                     if (answer === good_answer) {
  1400.                         is_correct = true;
  1401.                         is_exact = true;
  1402.                         break;
  1403.                     } else if (allow_typos && jw_distance(good_answer, answer) > 0.9) {
  1404.                         is_correct = true;
  1405.                     }
  1406.                 }
  1407.                 if (is_correct) {
  1408.                     action = 'correct';
  1409.                     if (!is_exact && msgcfg.show_slightly_off === true) message = "Your answer was slightly off";
  1410.                 } else {
  1411.                     var alt_answer = wanakana.toHiragana(answer,{IMEMode:true});
  1412.                     if (qinfo.answer.bad.indexOf(alt_answer) >= 0) {
  1413.                         action = 'shake';
  1414.                         message = 'We\'re looking for the meaning, not the reading';
  1415.                     } else {
  1416.                         action = 'incorrect';
  1417.                     }
  1418.                 }
  1419.                 break;
  1420.         }
  1421.  
  1422.         if (action !== 'shake') set_user_answer(quiz.index, action, answer);
  1423.         switch (action) {
  1424.             case 'correct':
  1425.                 quiz.stats.correct++;
  1426.  
  1427.                 // If question is reading, play audio now.
  1428.                 if (qinfo.answer.type === 'reading' && qinfo.question.type !== 'audio') {
  1429.                     play_audio(false /* force_play */, qinfo);
  1430.                 }
  1431.  
  1432.                 if ((quiz.settings.lightning_mode === true) &&
  1433.                     (!is_multi || !msgcfg.show_multi_reading || !msgcfg.halt_multi_reading) &&
  1434.                     (is_exact || !msgcfg.show_slightly_off || !msgcfg.halt_slightly_off )) {
  1435.  
  1436.                     return quiz.next();
  1437.                 } else {
  1438.                     update_quiz_stats();
  1439.                     input.prop('readonly', true);
  1440.                 }
  1441.                 dialog.attr('data-result', 'correct');
  1442.                 break;
  1443.  
  1444.             case 'shake':
  1445.                 shake(input);
  1446.                 input.focus();
  1447.                 break;
  1448.  
  1449.             case 'incorrect':
  1450.                 quiz.stats.incorrect++;
  1451.                 update_quiz_stats();
  1452.                 input.prop('readonly', true);
  1453.                 dialog.attr('data-result', 'incorrect');
  1454.  
  1455.                 if (quiz.settings.autoshow_correct && !quiz.showing_help) {
  1456.                     toggle_help('on');
  1457.                 }
  1458.                 break;
  1459.         }
  1460.  
  1461.         if (message) {
  1462.             dialog.find('.message').text(message);
  1463.             dialog.addClass('message');
  1464.             if (quiz.message_timer) {
  1465.                 clearTimeout(quiz.message_timer);
  1466.                 delete quiz.message_timer;
  1467.             }
  1468.             quiz.message_timer = setTimeout(function(){
  1469.                 dialog.removeClass('message');
  1470.                 quiz.message_timer = undefined;
  1471.             },2750);
  1472.         }
  1473.     }
  1474.  
  1475.     //========================================================================
  1476.     // shake()
  1477.     //------------------------------------------------------------------------
  1478.     function shake(elem) {
  1479.         var dist = '15px';
  1480.         var speed = 75;
  1481.         var right = {padding:'0 '+dist+' 0 0'}, left = {padding:'0 0 0 '+dist}, center = {padding:"0 0 0 0"};
  1482.  
  1483.         elem.animate(left,speed/2).animate(right,speed)
  1484.         .animate(left,speed).animate(right,speed)
  1485.         .animate(left,speed).animate(center,speed/2);
  1486.     }
  1487.  
  1488.     //========================================================================
  1489.     // prev_question()
  1490.     //------------------------------------------------------------------------
  1491.     function prev_question() {
  1492.         switch (quiz.mode) {
  1493.             case 'question':
  1494.                 if (quiz.index > 0) quiz.index--;
  1495.                 quiz.ask();
  1496.                 break;
  1497.  
  1498.             case 'summary':
  1499.                 if (quiz.index === quiz.stats.total) {
  1500.                     quiz.index = quiz.stats.total - 1;
  1501.                     update_quiz_stats();
  1502.                 }
  1503.                 set_mode('question');
  1504.                 break;
  1505.         }
  1506.         quiz.ask();
  1507.     }
  1508.  
  1509.     //========================================================================
  1510.     // next_question()
  1511.     //------------------------------------------------------------------------
  1512.     function next_question() {
  1513.         switch (quiz.mode) {
  1514.             case 'question':
  1515.                 if (quiz.index < quiz.stats.total-1) {
  1516.                     quiz.index++;
  1517.                     quiz.ask();
  1518.                 } else {
  1519.                     quiz.index = quiz.stats.total;
  1520.                     update_quiz_stats();
  1521.                     set_mode('summary');
  1522.                 }
  1523.                 break;
  1524.  
  1525.             case 'summary':
  1526.                 if (quiz.do_requiz) {
  1527.                     delete quiz.do_requiz;
  1528.                     if (!quiz.original_items) {
  1529.                         quiz.original_items = quiz.items;
  1530.                         quiz.items = quiz.requiz_items;
  1531.                         delete quiz.requiz_items;
  1532.                     }
  1533.                 } else {
  1534.                     delete quiz.requiz_items;
  1535.                     if (quiz.original_items) {
  1536.                         quiz.items = quiz.original_items;
  1537.                         delete quiz.original_items;
  1538.                     }
  1539.                     quiz.stats.round++;
  1540.                 }
  1541.                 quiz.start({keep_round_count:true});
  1542.                 break;
  1543.         }
  1544.     }
  1545.  
  1546.     //========================================================================
  1547.     // populate_errors()
  1548.     //------------------------------------------------------------------------
  1549.     function populate_errors() {
  1550.         var dialog = quiz.dialog;
  1551.         var percent_elem = dialog.find('.summary .percent');
  1552.         var errors_elem = dialog.find('.summary .errors');
  1553.  
  1554.         var total = quiz.stats.correct + quiz.stats.incorrect;
  1555.         var percent = (total === 0 ? 100 : 100 * quiz.stats.correct / total);
  1556.         percent_elem.text((Math.round(percent*100)/100).toString()+'%');
  1557.         if (total === quiz.stats.correct) {
  1558.             $('#ss_quiz .summary .requiz').addClass('hidden');
  1559.         } else {
  1560.             $('#ss_quiz .summary .requiz').removeClass('hidden');
  1561.         }
  1562.  
  1563.         var idx;
  1564.         var err_list = dialog.find('.summary .errors');
  1565.         err_list.html('');
  1566.         var requiz_items = {};
  1567.         quiz.requiz_items = [];
  1568.         for (idx = 0; idx < quiz.stats.total; idx++) {
  1569.             var grp_idx = quiz.serial_list[idx];
  1570.             var group = quiz.group_list[grp_idx[0]];
  1571.             if (!group.answer) continue;
  1572.             var answer = group.answer[grp_idx[1]];
  1573.             if (!answer || answer[0] !== 'incorrect') continue;
  1574.             var item = group.item;
  1575.             if (!requiz_items[item.id]) {
  1576.                 requiz_items[item.id] = 1;
  1577.                 quiz.requiz_items.push(item);
  1578.             }
  1579.             var itype = item.object;
  1580.             var qnatype = group.qna[grp_idx[1]];
  1581.             answer = answer[1];
  1582.             var qtype = {
  1583.                 char2read:'characters', char2mean:'characters', mean2read:'meaning',
  1584.                 read2mean:'reading', aud2read:'audio', aud2mean:'audio'
  1585.             }[qnatype];
  1586.             var atype = {
  1587.                 char2read:'reading', char2mean:'meaning', mean2read:'reading',
  1588.                 read2mean:'meaning', aud2read:'reading', aud2mean:'meaning'
  1589.             }[qnatype];
  1590.             var qlang = (qtype === 'meaning' ? 'en' : 'ja');
  1591.             var alang = (atype === 'meaning' ? 'en' : 'ja');
  1592.             var qtitle = to_title_case(itype+' '+atype);
  1593.             var atitle;
  1594.             switch (atype) {
  1595.                 case 'meaning':
  1596.                     var synonyms = [];
  1597.                     try {synonyms = item.study_materials.meaning_synonyms || [];} catch(e) {}
  1598.                     var meanings = item.data.meanings.map(meaning => meaning.meaning);
  1599.                     meanings = synonyms.concat(meanings).map(meaning => meaning.toLowerCase());
  1600.                     atitle = meanings.join(', ');
  1601.                     break;
  1602.                 case 'reading':
  1603.                     atitle = to_title_case(item.data.readings.map(reading => reading.reading).join(', '));
  1604.                     break;
  1605.             }
  1606.             var qtext = item.data.slug;
  1607.             if (qtype === 'audio') qtext += ' <i class="icon-audio"></i>';
  1608.             var atext = answer + ' <i class="icon-remove-sign wrong"></i>';
  1609.             err_list.append(
  1610.                 '<li><span class="que" lang="'+qlang+'" title="'+qtitle+'">'+qtext+'</span>'+
  1611.                 '<i class="icon-long-arrow-right"></i>'+
  1612.                 '<span class="ans" lang="'+alang+'" title="'+atitle+'">'+atext+'</span></li>'
  1613.             );
  1614.         }
  1615.     }
  1616.  
  1617.     //========================================================================
  1618.     // update_quiz_stats()
  1619.     //------------------------------------------------------------------------
  1620.     function update_quiz_stats() {
  1621.         var stats = $('#ss_quiz .stats_labels');
  1622.         var stats_width = quiz.stats.total.toString().length; // Number of digits in quiz counter
  1623.         var remaining = quiz.stats.total - quiz.index;
  1624.         stats.html(
  1625.             'Round: '+('       '+quiz.stats.round).slice(-1*stats_width)+'<br>'+
  1626.             'Remaining: '+('       '+remaining).slice(-1*stats_width)+'<br>'+
  1627.             'Correct: '+('       '+quiz.stats.correct).slice(-1*stats_width)+'<br>'+
  1628.             'Incorrect: '+('       '+quiz.stats.incorrect).slice(-1*stats_width)
  1629.         );
  1630.     }
  1631.  
  1632.     //========================================================================
  1633.     // quiz_key_handler()
  1634.     //------------------------------------------------------------------------
  1635.     var keycode_xlat = {
  1636.         '8':'Backspace', '13':'Enter', '27':'Escape', '37':'ArrowLeft', '39':'ArrowRight', '65':'KeyA',
  1637.         '69':'KeyE', '72':'KeyH', '76':'KeyL', '80':'KeyP', '82':'KeyR', '83':'KeyS', '112':'F1',
  1638.     };
  1639.     function quiz_key_handler(e) {
  1640.         if (quiz_settings_state === 'open') return true;
  1641.         var input = quiz.dialog.find('.answer input');
  1642.         var input_readonly = input.prop('readonly');
  1643.         var code;
  1644.         if (e.type === 'keydown') {
  1645.             if (e.originalEvent.keyCode) {
  1646.                 code = keycode_xlat[e.originalEvent.keyCode] || 'Unknown';
  1647.             } else {
  1648.                 code = e.originalEvent.code;
  1649.             }
  1650.         } else {
  1651.             code = String.fromCharCode(e.charCode);
  1652.         }
  1653.  
  1654.         if (code === 'Enter') {
  1655.             if (quiz.mode === 'question' && !input_readonly) {
  1656.                 quiz.submit(e);
  1657.             } else {
  1658.                 quiz.next();
  1659.             }
  1660.         } else if (code === 'Escape') {
  1661.             process_escape();
  1662.         } else if (code === 'F1' || code === '?') {
  1663.             toggle_help();
  1664.         } else if (code === 'Backspace') {
  1665.             // Prevent backspace from navigating away from the page.
  1666.             if (quiz.mode !== 'question') return false;
  1667.             if (input_readonly) quiz.ask(true /* erase_old_answer */);
  1668.             return true;
  1669.         } else if (e.ctrlKey || e.metaKey) {
  1670.             switch (code) {
  1671.                 case 'KeyA':
  1672.                     if (e.shiftKey) {
  1673.                         toggle_audio();
  1674.                     } else {
  1675.                         play_audio(true);
  1676.                     }
  1677.                     break;
  1678.                 case 'KeyE': process_escape(); break;   // End
  1679.                 case 'KeyH': toggle_help(); break;      // Help
  1680.                 case 'KeyL': toggle_lightning(); break; // Lightning
  1681.                 case 'KeyP': toggle_pairing(); break;  // Pairing
  1682.                 case 'KeyR': // Re-quiz
  1683.                     if (quiz.mode !== 'summary' || quiz.dialog.find('.summary .requiz').hasClass('hidden')) break;
  1684.                     quiz.requiz();
  1685.                     break;
  1686.                 case 'KeyS': manual_shuffle(); break;
  1687.                 case 'ArrowLeft': quiz.prev(); break;
  1688.                 case 'ArrowRight': quiz.next(); break;
  1689.                 default: return true;
  1690.             }
  1691.         } else {
  1692.             var is_special = (e.key.length !== 1);
  1693.             if (is_special) return true;
  1694.  
  1695.             // Let the browser handle regular keys in the input box
  1696.             if (e.target === input[0]) return true;
  1697.  
  1698.             // Let the browser handle all other keys while not in question mode.
  1699.             if (quiz.mode !== 'question') return true;
  1700.         }
  1701.         return false;
  1702.     }
  1703.  
  1704.     //========================================================================
  1705.     // manual_shuffle()
  1706.     //------------------------------------------------------------------------
  1707.     function manual_shuffle() {
  1708.         var keep_round_count = true;
  1709.         if (quiz.shuffle_timer === undefined) {
  1710.             quiz.shuffle_timer = setTimeout(function(){
  1711.                 delete quiz.shuffle_timer;
  1712.             }, 1000);
  1713.         } else {
  1714.             clearTimeout(quiz.shuffle_timer);
  1715.             delete quiz.shuffle_timer;
  1716.             keep_round_count = false;
  1717.         }
  1718.         quiz.start({keep_round_count:keep_round_count});
  1719.     }
  1720.  
  1721.     //========================================================================
  1722.     // process_escape()
  1723.     //------------------------------------------------------------------------
  1724.     function process_escape() {
  1725.         if (quiz.escape_timer === undefined) {
  1726.             quiz.escape_counter = 1;
  1727.             quiz.escape_timer = setTimeout(function(){
  1728.                 delete quiz.escape_counter;
  1729.                 delete quiz.escape_timer;
  1730.             }, 750);
  1731.         } else {
  1732.             quiz.escape_counter++;
  1733.             if (quiz.escape_counter === 3) {
  1734.                 clearTimeout(quiz.escape_timer);
  1735.                 delete quiz.escape_timer;
  1736.                 quiz.close();
  1737.                 return;
  1738.             }
  1739.         }
  1740.         switch (quiz.mode) {
  1741.             case 'question':
  1742.                 set_mode('summary');
  1743.                 break;
  1744.  
  1745.             case 'summary':
  1746.                 if (quiz.index === quiz.stats.total) quiz.index = quiz.stats.total-1;
  1747.                 set_mode('previous');
  1748.                 break;
  1749.         }
  1750.     }
  1751.  
  1752.     //========================================================================
  1753.     // toggle_audio()
  1754.     //------------------------------------------------------------------------
  1755.     function toggle_audio() {
  1756.         var elem = $('#ss_quiz .settings .ss_audio');
  1757.         if (quiz.settings.mute_audio) {
  1758.             quiz.settings.mute_audio = false;
  1759.             quiz.settings.play_audio = false;
  1760.             elem.removeClass('mute');
  1761.             elem.removeClass('active');
  1762.         } else if (quiz.settings.play_audio) {
  1763.             quiz.settings.mute_audio = true;
  1764.             quiz.settings.play_audio = false;
  1765.             elem.addClass('mute');
  1766.             elem.removeClass('active');
  1767.         } else {
  1768.             quiz.settings.mute_audio = false;
  1769.             quiz.settings.play_audio = true;
  1770.             elem.removeClass('mute');
  1771.             elem.addClass('active');
  1772.         }
  1773.         wkof.Settings.save('ss_quiz');
  1774.     }
  1775.  
  1776.     //========================================================================
  1777.     // toggle_help()
  1778.     //------------------------------------------------------------------------
  1779.     function toggle_help(value) {
  1780.         if (quiz.mode !== 'question') return;
  1781.         var elem = $('#ss_quiz .settings .ss_help');
  1782.         switch (value) {
  1783.             case 'on':
  1784.                 elem.addClass('active');
  1785.                 quiz.dialog.addClass('help');
  1786.                 quiz.showing_help = true;
  1787.                 break;
  1788.             case 'off':
  1789.                 elem.removeClass('active');
  1790.                 quiz.dialog.removeClass('help');
  1791.                 quiz.showing_help = false;
  1792.                 break;
  1793.             default:
  1794.                 elem.toggleClass('active');
  1795.                 quiz.dialog.toggleClass('help');
  1796.                 quiz.showing_help = !quiz.showing_help;
  1797.                 break;
  1798.         }
  1799.         var qinfo = quiz.qinfo.load(quiz.index);
  1800.         if (quiz.showing_help && qinfo.answer.type === 'reading') play_audio(false /* force_play */);
  1801.     }
  1802.  
  1803.     //========================================================================
  1804.     // toggle_lightning()
  1805.     //------------------------------------------------------------------------
  1806.     function toggle_lightning() {
  1807.         var elem = $('#ss_quiz .settings .ss_lightning');
  1808.         elem.toggleClass('active');
  1809.         quiz.settings.lightning_mode = elem.hasClass('active');
  1810.         wkof.Settings.save('ss_quiz');
  1811.     }
  1812.  
  1813.     //========================================================================
  1814.     // toggle_pairing()
  1815.     //------------------------------------------------------------------------
  1816.     function toggle_pairing(e, initialize) {
  1817.         var elem_pair = $('#ss_quiz .settings .ss_pair');
  1818.         var elem_data = elem_pair.find('.data');
  1819.         var values = ['disabled', 'reading_first', 'meaning_first', 'random_order'];
  1820.         var value = Math.max(0, values.indexOf(quiz.settings.pairing));
  1821.  
  1822.         if (!initialize) value = (value + 1) % values.length;
  1823.         quiz.settings.pairing = value = values[value];
  1824.         wkof.Settings.save('ss_quiz')
  1825.  
  1826.         switch (value) {
  1827.             case 'disabled': elem_data.text('Disabled'); elem_pair.removeClass('active'); break;
  1828.             case 'reading_first': elem_data.text('Reading First'); elem_pair.addClass('active'); break;
  1829.             case 'meaning_first': elem_data.text('Meaning First'); elem_pair.addClass('active'); break;
  1830.             case 'random_order': elem_data.text('Random Order'); elem_pair.addClass('active'); break;
  1831.         }
  1832.         if (!initialize) quiz.start({keep_round_count:true});
  1833.     }
  1834.  
  1835.     //========================================================================
  1836.     // drag()
  1837.     //------------------------------------------------------------------------
  1838.     function drag(e) {
  1839.         var dlg = $(e.currentTarget).closest('.dialog');
  1840.         var pos = dlg.position();
  1841.         var ofs = {x: e.pageX-pos.left, y: e.pageY-pos.top};
  1842.         $('body')
  1843.         .on('mousemove.ss_quiz_drag touchmove.ss_quiz_drag', function(e){
  1844.             dlg.css({left: Math.max(0,e.pageX-ofs.x), top: Math.max(0,e.pageY-ofs.y)});
  1845.         })
  1846.         .on('mouseup.ss_quiz_drag touchend.ss_quiz_drag', function(e){
  1847.             $('body').off('.ss_quiz_drag');
  1848.         });
  1849.     }
  1850.  
  1851.     wkof.set_state('ss_quiz', 'ready');
  1852.  
  1853. })(window.ss_quiz);

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