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/**
* Created by robert on 9/18/15.
*/
(function(){
codeq.globalStateMachine.register('language',{
'enter': function(){
$('#disabled').css('display', '');
$('#disabled').css('cursor', 'wait');
codeq.comms.send({'action': 'list_problems'})//currently problem list and the actual login are still in the same state
.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.language + '/' + group.identifier.group;
var name = group.name.language + ': ' + group.name.group;
html.push('<option value="', identifier, '">', name, '</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.length < 2) alert('Choose a problem group');
else if (!problem) alert('Choose a problem');
else {
$('#disabled').css('display', '');
codeq.comms.getProblem(identifier[0], identifier[1], 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 (identifier[0]) {
case 'prolog':
codeq.globalStateMachine.transition('prolog', data);
break;
case 'python':
codeq.globalStateMachine.transition('python', data);
break;
default:
alert('Unknown language: ' + identifier[0]);
break;
}
})
.fail(function (reason) {
$('#disabled').css('display', 'none');
alert('Login request failed: ' + reason);
})
.done();
}
});
$('#screen_language').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(){
$('#problem_group').off();
$("#submit_problem").off();
$("#problem_group option").remove();//empty the selects
$("#problems option").remove();
$("#screen_language").css('display', 'none');
}
});
})();
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