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/* CodeQ: an online programming tutor.
Copyright (C) 2015,2016 UL FRI
This program is free software: you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option) any
later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
(function() {
"use strict";
var jqScreen = $('#screen-python'), // the screen container element
jqConsole = jqScreen.find('.block-console'),
jqBtnPlan = jqScreen.find('.btn-plan'),
jqBtnTest = jqScreen.find('.btn-test').ladda(),
jqBtnRun = jqScreen.find('.btn-run'),
jqBtnStop = jqScreen.find('.btn-stop'),
jqAllButtons = jqBtnPlan.add(jqBtnTest).add(jqBtnRun).add(jqBtnStop), // all buttons
pythonHandler; // created when we enter the python state and destroyed once we leave it
var enterFun = function(problemDef, commonDef, currentSolution) {
$('#navigation-problem-list').css('display', '');
var navigationPhython = $("#navigation-python");
navigationPhython.addClass("active");
navigationPhython.css('display', '');
jqScreen.css('display', ''); // we have to show the screen now so the code editor shows its initial values correctly
pythonHandler = createPythonHandler(problemDef, commonDef, currentSolution);
};
codeq.globalStateMachine.register('python', {
'jqScreen': jqScreen,
'enter': function (ref, data) {
codeq.loadProblemData(ref, data).then(function (problem) {
enterFun(problem.generalProblemData, data.commonDef, problem.solution);
})
.fail(function (error) {
var message = 'Could not obtain problem definition: ' + error.message;
codeq.log.error(message, error);
alert(message);
history.back();
})
.done();
},
'exit': function () {
jqScreen.css('display', 'none');
if (pythonHandler) pythonHandler.destroy();
pythonHandler = null;
$('#navigation-problem-list').css('display', 'none');
var navigationPhython = $("#navigation-python");
navigationPhython.removeClass("active");
navigationPhython.css('display', 'none');
}
});
// a constant
var firstCharacterPos = {'line': 0, 'ch': 0};
var makePythonTerminalHandler = function (jqConsole, editor, problem_id, activityHandler) {
var terminal = codeq.makeConsole(jqConsole, {
'greeting': 'CodeQ Python terminal proxy',
'autoHistory': true
}),
tcs = function terminalCommandSuccess (data) {
if (data.code !== 0) {
alert(data.message);
}
},
tcf = function terminalCommandFailed (error) {
alert(error);
};
terminal.onInput = function (text) {
terminal.leftmostCol = 0;
activityHandler.queueTrace({'typ': 'python_input', 'txt': text + '\n'});
return codeq.comms.sendPythonPush({
'text': text + '\n'
}).then(tcs, tcf);
};
codeq.comms.on('terminal_output', function (data) {
var text = data.text,
lines = text.split('\n');
terminal.append(text, 'output');
terminal.leftmostCol = lines[lines.length-1].length;
});
terminal.leftmostCol = 1;
return terminal;
};
codeq.on('init', function (args) {
codeq.tr.registerDictionary('python', codeq.tr.emptyDictionary); // to make the translator happy, when this screen is not active
});
var createPythonHandler = function (problemDef, commonDef, currentSolution) {
var jqEditor = jqScreen.find('.code-editor'),
jqHints = jqScreen.find('.hints'),
jqTerminal = jqConsole.find('.console'),
editor = codeq.makeEditor(jqEditor[0],
{
mode: 'python',
indentUnit: 4,
value: currentSolution || problemDef.initial || ''
},
function () {
jqTerminal.click()
}),
activityHandler = codeq.makeActivityHandler(editor, problemDef.id),
terminal = makePythonTerminalHandler(jqTerminal, editor, problemDef.id, activityHandler),
hinter = codeq.makeHinter(jqHints, jqEditor, editor, 'python_hints', problemDef, commonDef, activityHandler);
codeq.template.processDictionary(problemDef.translations.description,
[problemDef.language, problemDef.group, problemDef.problem]);
codeq.tr.registerDictionary('python', problemDef.translations);
codeq.tr.translateDom(jqScreen);
jqBtnPlan.prop('disabled', !hinter.hasNextPlan());
editor.on('change', function (instance, changeObj) {
var doc = editor.getDoc(),
pos = codeq.codePointCount(doc.getRange(firstCharacterPos, changeObj.from)),
text;
text = changeObj.removed.join('\n');
if (text) {
activityHandler.queueTrace({'typ': 'rm', 'off': pos, 'txt': text});
}
text = changeObj.text.join('\n');
if (text) {
activityHandler.queueTrace({'typ': 'ins', 'off': pos, 'txt': text});
}
});
jqBtnPlan.on('click', function () {
hinter.clear();
if (!hinter.planNext()) {
jqBtnPlan.prop('disabled', true).blur();
}
});
jqBtnTest.on('click', function () {
// random timeout before returning results to the user, helps
// maintain the illusion
var timeout = 250 + Math.random() * 500;
hinter.clear();
$(editor.getWrapperElement()).addClass('disabled');
editor.setOption('readOnly', 'nocursor');
terminal.inputDisable();
jqBtnTest.ladda('start');
codeq.throttle(
codeq.comms.sendTest({
'program': editor.getDoc().getValue(),
'problem_id': problemDef.id
}),
timeout)
.then(function (data) {
if (data.code === 0) {
hinter.handle(data.hints);
}
else {
alert(data.message);
}
})
.fail(alert)
.fin(function () {
editor.setOption('readOnly', false);
$(editor.getWrapperElement()).removeClass('disabled');
terminal.inputEnable();
jqBtnTest.ladda('stop');
})
.done();
});
jqBtnRun.on('click', function () {
var program = editor.getDoc().getValue();
activityHandler.queueTrace({'typ': 'python_run', 'program': program});
codeq.comms.sendPythonStop({})
.then(function () {
codeq.comms.sendPythonExec({
'program': program,
'problem_id': problemDef.id
});
})
.fail(alert)
.done();
// focus the terminal
jqTerminal.click();
});
jqBtnStop.on('click', function () {
activityHandler.queueTrace({'typ': 'python_stop'});
codeq.comms.sendPythonStop({})
.fail(alert)
.done();
});
codeq.comms.loadProblem(problemDef.id).done();
activityHandler.queueTrace({
'typ': 'open',
'time': Date.now(),
'content': editor.getDoc().getValue()
});
return {
destroy: function () {
codeq.comms.endProblem().done();
$('#screen-python .title').text(''); //empty the title text
jqAllButtons.off();
editor.off('change');
codeq.comms.off('terminal_output'); // stop listening for the terminal events from server
activityHandler.queueTrace({'typ': 'close'});
activityHandler.flush();
hinter.destroy();
terminal.destroy();
jqEditor.empty(); // TODO: perhaps you do not want to "free" the editor, just empty it
jqTerminal.empty(); // TODO: the same with the console
jqEditor = null;
jqTerminal = null;
jqHints = null;
codeq.tr.registerDictionary('python', codeq.tr.emptyDictionary);
}
};
};
})();
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