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+/**
+ * Created by robert on 9/15/15.
+ */
+
+/**
+ * this is currently not used - I made this common python/prolog library a bit to early, but I don't want to delete everything, so I'll leave it for now in case it can be used later without to many changes
+ *
+ *
+ *
+ * @param editor
+ * @param problem_id
+ * @returns {{queueTrace: Function, flush: Function, addAndPurge: Function}}
+ */
+
+codeq.makeActivityHandler = function (editor, problem_id) {
+ var lastActivityMillis = Date.now(),
+ deltaActivityMillis = function deltaActivityMillisFunc () {
+ var now = Date.now(),
+ dt = now - lastActivityMillis;
+ lastActivityMillis = now;
+ return dt;
+ },
+ queue = [],
+ ts = null,
+ timer = function () {
+ var promise;
+ ts = null;
+ if (queue.length === 0) return Q(true);
+ promise = codeq.comms.sendActivity(queue, editor.getDoc().getValue(), problem_id);
+ queue.length = 0;
+ return promise;
+ },
+ flush = function () {
+ clearTimeout(ts);
+ return timer();
+ };
+
+ return {
+ 'queueTrace': function (trace) {
+ trace['dt'] = deltaActivityMillis();
+ queue.push(trace);
+ if (ts === null) setTimeout(timer, 10000); // flush every 10 seconds
+ },
+ 'flush': flush,
+ 'addAndPurge': function (trace) {
+ var accumulatedTrace = queue;
+ queue = [];
+ trace['dt'] = deltaActivityMillis();
+ accumulatedTrace.push(trace);
+ if (ts !== null) {
+ clearTimeout(ts);
+ ts = null;
+ }
+ return accumulatedTrace;
+ }
+ };
+};
+
+/**
+ * Creates a new handler for the given Programming language assignment definition.
+ *
+ * @param {string} language - either 'prolog' or 'python'
+ * @param {PrologTaskDef} info
+ * @param {function} makeTerminalHandlerFun - either the makePythonTerminalHandler or makePrologTerminalHandler function
+ * @returns {{destroy: Function, processServerHints: Function}}
+ */
+codeq.createProgrammingLanguageHandler = function (language,info,makeTerminalHandlerFun) {
+ var firstCharacterPos = {'line': 0, 'ch': 0};
+
+ var problem = info.problem,
+ jqDescription = $('#description'),
+ jqEditor = $('#code_editor'),
+ jqConsole = $('#console'),
+ jqHints = $('#info'),
+ editor = CodeMirror(jqEditor[0], { cursorHeight: 0.85, lineNumbers: true, matchBrackets: true }),
+ activityHandler = codeq.makeActivityHandler(editor, problem.id),
+ terminal = makeTerminalHandlerFun(jqConsole, editor, problem.id, activityHandler),
+ hintDefs = problem.hint,
+ hintCounter = 0, // for generating unique class-names
+ hintCleaners = [],
+ clearHints = function () {
+ var i;
+ for (i = hintCleaners.length - 1; i >= 0; i--) {
+ hintCleaners[i]();
+ }
+ hintCleaners.length = 0;
+ hintCounter = 0;
+ },
+ addMark = function (start, end) {
+ var posStart = editor.posFromIndex(start),
+ posEnd = editor.posFromIndex(end),
+ doc = editor.getDoc(),
+ mark = doc.markText(posStart, posEnd, {className: 'editor-mark _emark_' + hintCounter}),
+ result = {start: posStart, end: posEnd, mark: mark, className: '_emark_' + hintCounter};
+ hintCleaners.push(function () { mark.clear(); mark = null; doc = null; result.mark = null; });
+ hintCounter++;
+ return result;
+ },
+ processTemplate = function (template, args) {
+ if (!args)
+ return template;
+ return template.replace(/\[%=(\w+)%\]/g, function(match, name) {
+ return args[name];
+ });
+ },
+ hintHandlers = {
+ 'static': function (type, template, serverHint) {
+ codeq.log.debug('Processing static hint');
+ var message = processTemplate(template, serverHint.args);
+ jqHints.append('<div class="hint-static">' + message + '</div>');
+ // no hint cleaner here, a static hint remains on the screen
+ },
+ 'popup': function (type, template, serverHint) {
+ codeq.log.debug('Processing popup hint');
+ var message = processTemplate(template, serverHint.args),
+ mark = addMark(serverHint.start, serverHint.end), // add the mark
+ jqMark = jqEditor.find('.' + mark.className);
+ /* jqPopup = null,
+ onBlur = function () {
+ codeq.log.debug('Removing popup');
+ if (jqPopup) {
+ jqPopup.off('blur', onBlur);
+ jqPopup.remove();
+ jqPopup = null;
+ }
+ };
+
+ window.jqMark = jqMark; // TODO: DEBUG
+
+ jqMark.on('click', function () {
+ if (jqPopup) return;
+ codeq.log.debug('Showing popup');
+ var pos = mark.mark.find(), // results in {from: {line: number, ch: number}, to: {line: number, ch: number}}
+ left = pos.from.ch < pos.to.ch ? pos.from.ch : pos.to.ch,
+ down = pos.from.line < pos.to.line ? pos.to.line : pos.from.line;
+ jqPopup = $('<div style="position: absolute;" class="editor-popup ' + mark.className + '"></div>').html(template);
+ editor.addWidget({line: down, ch: left}, jqPopup[0], true);
+ jqPopup = jqEditor.find('.editor-popup.' + mark.className);
+ setTimeout(function () {jqPopup.trigger('focus'); jqPopup.on('click', onBlur);}, 50); // event handlers can be registered only when the DOM elements is part of the document
+ window.jqPopup = jqPopup; // TODO: DEBUG
+ });
+
+ hintCleaners.push(function () {
+ if (jqPopup) {
+ jqPopup.off('blur', onBlur);
+ jqPopup.remove();
+ jqPopup = null;
+ }
+ if (jqMark) {
+ jqMark = null;
+ }
+ mark = null;
+ });*/
+
+ jqMark.popover({content: message, html: true, placement: 'auto bottom', trigger: 'hover focus click', container: 'body'});
+ hintCleaners.push(function () { if (jqMark) { jqMark.popover('destroy'); jqMark = null; } });
+
+ mark.mark.on('', function () {});
+ },
+ 'dropdown': function (type, template, serverHint) {
+ codeq.log.debug('Processing dropdown hint');
+ var completion = null, // the completion object, created in showHint()
+ close = function () {
+ if (completion) {
+ completion.close();
+ completion = null;
+ }
+ };
+
+ if ((editor.listSelections().length > 1) || editor.somethingSelected()) {
+ // showHint() doesn't work if a selection is activeparts
+ }
+
+ editor.showHint({
+ hint: function () {
+ var hints = {
+ list: serverHint.choices,
+ from: editor.posFromIndex(serverHint.start),
+ to: editor.posFromIndex(serverHint.end)
+ };
+ completion = editor.state.completionActive;
+ return hints;
+ },
+ completeOnSingleClick: true,
+ completeSingle: false
+ });
+
+ hintCleaners.push(close);
+ }
+ };
+
+ editor.setValue(info.solution);
+ $('#title').text(problem.slug);
+ jqDescription.html(problem.description);
+
+ editor.on('change', function (instance, changeObj) {
+ var doc = editor.getDoc(),
+ pos = codeq.codePointCount(doc.getRange(firstCharacterPos, changeObj.from));
+
+ if (changeObj.removed) {
+ activityHandler.queueTrace({'typ': 'rm', 'off': pos, 'len': codeq.codePointCount(changeObj.removed)});
+ }
+
+ if (changeObj.text) {
+ activityHandler.queueTrace({'typ': 'ins', 'off': pos, 'txt': changeObj.text});
+ }
+ });
+
+ var handler = {
+ destroy: function () {
+ terminal.destroy();
+ jqDescription.empty();
+ jqEditor.empty(); // TODO: perhaps you do not want to "free" the editor, just empty it
+ jqConsole.empty(); // TODO: the same with the console
+ jqHints.empty(); // TODO: just make static references to these
+ jqDescription = null;
+ jqEditor = null;
+ jqConsole = null;
+ jqHints = null;
+ },
+
+ /**
+ * Processes and display appropriately the server hints.
+ * TODO: sort hints so static and popup hints come first, and a (single) drop-down hint last
+ *
+ * @param {ServerHint[]} serverHints an array of hints from the server
+ */
+ processServerHints: function (serverHints) {
+ var n = serverHints.length,
+ /** number */ i,
+ /** ServerHint */ serverHint,
+ /** HintDefinition */ hintDef,
+ hintType, hintTemplate, t, fn;
+ clearHints();
+ for (i = 0; i < n; i++) {
+ serverHint = serverHints[i];
+ hintDef = hintDefs[serverHint.id];
+ if (serverHint.indices) {
+ indices = serverHint.indices
+ for (i = 0; i < indices.length; i++) {
+ hintDef = hintDef[indices[i]];
+ if (!hintDef)
+ break;
+ }
+ }
+ if (!hintDef) {
+ codeq.log.error('Undefined hint ' + serverHint.id + ' with indices ' + serverHint.indices);
+ continue;
+ }
+ t = typeof hintDef;
+ if (t === 'object') {
+ hintType = hintDef.type;
+ hintTemplate = hintDef.message;
+ }
+ else if (t === 'string') {
+ hintType = 'static';
+ hintTemplate = hintDef;
+ }
+ else {
+ codeq.log.error('Unsupported hint definition: ' + t);
+ continue;
+ }
+
+ fn = hintHandlers[hintType];
+ if (!fn) codeq.log.error('Unsupported hint type: ' + hintType);
+ else fn(hintType, hintTemplate, serverHint);
+ }
+ }
+ };
+
+ var jqButtons = $('#block-toolbar button');
+// $(jqButtons.get(0)).on('click', function () { handler.processServerHints([{id:'x_must_be_female'}]); });
+// $(jqButtons.get(1)).on('click', function () { handler.processServerHints([{id:'popup_unknown', start: 20, end: 26}]); });
+// $(jqButtons.get(2)).on('click', function () { handler.processServerHints([{id:'drop_down', start: 20, end: 26, choices:['ena', 'dva', 'tri']}]); });
+
+ $('#btn_code_hint').on('click', function () {
+ if (language === 'prolog') {
+ terminal.append('hint.\n', 'input');
+ terminal.inputDisable();
+ }
+ var doc = editor.getDoc();
+ codeq.comms.sendHint({
+ 'language': 'prolog',
+ 'program': editor.getDoc().getValue(),
+ 'problem_id': problem.id
+ }).then(
+ function hintSuccess(data) {
+ if (data.code === 0)
+ handler.processServerHints(data.hints);
+ else
+ terminal.append(data.message + '\n', 'error');
+ },
+ function hintFailed (error) {
+ terminal.append(error + '\n', 'error');
+ }
+ ).fin(function () {
+ if(language === 'prolog'){
+ terminal.inputEnable();
+ terminal.append('?- ', 'output');
+ }
+ }
+ ).done();
+ });
+ $('#btn_code_test').on('click', function () {
+ if(language === 'prolog'){
+ terminal.append('test.\n', 'input');
+ terminal.inputDisable();
+ }
+ var doc = editor.getDoc();
+ codeq.comms.sendTest({
+ 'language': language,
+ 'program': editor.getDoc().getValue(),
+ 'problem_id': problem.id
+ }).then(
+ function testSuccess(data) {
+ if (data.code === 0)
+ handler.processServerHints(data.hints);
+ else
+ terminal.append(data.message + '\n', 'error');
+ },
+ function testFailed (error) {
+ terminal.append(error + '\n', 'error');
+ }
+ ).fin(function () {
+ if(language === 'prolog'){
+ terminal.inputEnable();
+ terminal.append('?- ', 'output');
+ }
+ }
+ ).done();
+ });
+
+ if(language === 'python'){
+ // TODO first line of interpreter output is buffered without this, why?
+ codeq.comms.sendPush({
+ 'text': ''
+ });
+ }
+
+ return handler;
+};