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(function(){
var jqScreen = $('#screen_problem'),
jqLanguageTitle = jqScreen.find('.language-title'),
jqLanguageDescription = jqScreen.find('.language-description'),
jqLanguageProblems = jqScreen.find('.language-problems'),
languageCache = {}, // keyed by language identifier
currentData = null, // currently active data
createLanguageData = function (data, languageIdentifier, lang) { // data is the content of language.json
var trLanguage = codeq.chooseTranslation(data.translations, lang),
groups = data.groups || {},
languageHints = trLanguage.hint || {},
html = [],
problemReferences = [],
groupIdentifier, group, trGroup, problems, problemIdentifier, problem, trProblem;
for (groupIdentifier in groups) {
if (!groups.hasOwnProperty(groupIdentifier)) continue;
group = groups[groupIdentifier] || {};
trGroup = codeq.chooseTranslation(group.translations, lang);
html.push('<li><div class="group-title">', codeq.escapeHtml(trGroup.name || 'Group name not set: ' + groupIdentifier), '</div>');
html.push('<div class="group-description">', codeq.escapeHtml(trGroup.description || 'Group description not set: ' + groupIdentifier), '</div>');
html.push('<ul class="group-problems">');
problems = group.problems || {};
for (problemIdentifier in problems) {
if (!problems.hasOwnProperty(problemIdentifier)) continue;
problem = problems[problemIdentifier];
trProblem = codeq.chooseTranslation(problem.translations, lang);
html.push('<li><a class="problem-', '' + problemReferences.length, '">', codeq.escapeHtml(trProblem.name || 'Problem name not set: ' + problemIdentifier), '</a></li>');
problemReferences.push({'g': groupIdentifier, 'p': problemIdentifier});
}
html.push('</ul></li>');
}
return {
'name': trLanguage.name || 'Language name not set: ' + languageIdentifier,
'description': trLanguage.description || 'Description not set: ' + languageIdentifier,
'html': html.join(''),
'refs': problemReferences,
'hints': trLanguage.hint || {}
};
},
onLangChange = function (args) {
purgeDom();
createDom(currentData);
},
createDom = function (languageData) {
var lang = codeq.getLang(),
language = languageData.identifier,
data = languageData[lang];
if (!data) {
data = createLanguageData(languageData.raw, language, lang);
languageData[lang] = data;
}
jqLanguageTitle.html(data.name);
jqLanguageDescription.html(data.description);
jqLanguageProblems.html(data.html);
jqLanguageProblems.find('a').on('click', function () {
var index = +$(this).attr('class').split('-')[1],
ref = data.refs[index];
if (!ref) {
codeq.log.error('Clicked on a problem link having erroneous index: ' + index);
return;
}
// transition
codeq.wait(
codeq.comms.getProblem(language, ref.g, ref.p)
.then(function (data) {
if (data.code !== 0) throw new Error('Failed to obtain problem data, code: ' + data.code + ', message: ' + data.message);
codeq.globalStateMachine.transition(language, data);
})
)
.fail(function (reason) {
codeq.log.error('Failed to obtain the problem definition: ' + reason, reason);
alert('Failed to obtain the problem definition: ' + reason);
})
.done();
});
codeq.on('langchange', onLangChange);
},
purgeDom = function () {
jqLanguageProblems.find('a').off();
jqLanguageProblems.empty();
jqLanguageDescription.empty();
jqLanguageTitle.empty();
codeq.off('langchange', onLangChange);
},
lastLanguage;
codeq.globalStateMachine.register('problem',{
'enter': function(language){
if (language) lastLanguage = language;
else language = lastLanguage; // This happens when we hit this with the back button
$('#navigation-login').css('display', '');
$('#navigation-language').css('display', '');
$("#navigation-problem").addClass("active").css('display', '');
jqScreen.css('display', '');
currentData = languageCache[language];
if (currentData) {
createDom(currentData);
}
else {
codeq.wait(codeq.comms.getLanguageDef(language).then(function (rawData) {
currentData = {'raw': rawData, 'identifier': language};
languageCache[language] = currentData;
createDom(currentData);
})).done();
}
/* codeq.comms.send({'action': 'list_problems', 'language':language})
.then(
function success(data) {
var i, groups, group, problems, problem, first_group,
jqGroup = $('#problem_group'),
jqProblems = $('#problems'),
html = [],
mapping = {},
onGroupChange = function () {
var problems = mapping[jqGroup.val()],
html = [],
i, p;
if (problems) {
for (i = 0; i < problems.length; i++) {
p = problems[i];
html.push('<option value="', p.identifier, '">', p.name, '</option>\n')
}
}
jqProblems.html(html.join(''));
};
if (data && (data.code === 0)) {
$('#disabled').css('display', 'none');
groups = data.problems;
for (i = 0; i < groups.length; i++) {
group = groups[i];
var identifier = group.identifier.group;
html.push('<option value="', identifier, '">', group.name.group, '</option>\n');
mapping[identifier] = group.problems;
}
jqGroup.html(html.join(''));
first_group = html[1];
html = null;
jqGroup.on('click', onGroupChange);
jqGroup.val(first_group);
onGroupChange();
$("#submit_problem").on('click', function(){
var identifier = $('#problem_group').val(),//.split('/'),
problem = $('#problems').val();
if(!identifier) alert('Choose a problem group');
else if (!problem) alert('Choose a problem');
else {
$('#disabled').css('display', '');
codeq.comms.getProblem(language, identifier, problem)
.then(function (data) {
if (data.code !== 0) throw new Error('Failed to obtain problem data, code: ' + data.code + ', message: ' + data.message);
$('#disabled').css('display', 'none');
switch (language) {//(identifier[0]) {
case 'prolog':
codeq.globalStateMachine.transition('prolog', data);
break;
case 'python':
codeq.globalStateMachine.transition('python', data);
break;
default:
alert('Unknown language: ' + language);
break;
}
})
.fail(function (reason) {
$('#disabled').css('display', 'none');
alert('Login request failed: ' + reason);
})
.done();
}
});
$('#screen_problem').css('display', '');
}
else {
$('#disabled').css('cursor', '');
alert('Obtaining list of problems failed: code=' + data.code + ', reason=' + data.message);
}
},
function failure(reason) {
$('#disabled').css('cursor', '');
alert('Request to obtain list of problems failed: ' + reason);
}
).done();*/
},
'exit' : function(){
purgeDom();
/* $('#problem_group').off();
$("#submit_problem").off();
$("#problem_group option").remove();//empty the selects
$("#problems option").remove();
$("#screen_problem").css('display', 'none');*/
jqScreen.css('display', 'none');
$('#navigation-login').css('display', 'none');
$('#navigation-language').css('display', 'none');
$('#navigation-problem').css('display', 'none').removeClass("active");
}
});
})();
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