笙默考试管理系统-MyExamTest----codemirror（13）

笙默考试管理系统-MyExamTest----codemirror（13）

目录

一、 笙默考试管理系统-MyExamTest----codemirror

二、 笙默考试管理系统-MyExamTest----codemirror

三、 笙默考试管理系统-MyExamTest----codemirror

四、 笙默考试管理系统-MyExamTest----codemirror

五、 笙默考试管理系统-MyExamTest----codemirror

• 笙默考试管理系统-MyExamTest----codemirror

 function replaceSelection(code, collapse) {

            replaceRange1(splitLines(code), sel.from, sel.to, function(end) {

                if (collapse == "end") return {from: end, to: end};

                else if (collapse == "start") return {from: sel.from, to: sel.from};

                else return {from: sel.from, to: end};

            });

        }

• 笙默考试管理系统-MyExamTest----codemirror

        function replaceRange1(code, from, to, computeSel) {

            var endch = code.length == 1 ? code[0].length + from.ch : code[code.length-1].length;

            var newSel = computeSel({line: from.line + code.length - 1, ch: endch});

            updateLines(from, to, code, newSel.from, newSel.to);

        }

• 笙默考试管理系统-MyExamTest----codemirror

        function getRange(from, to) {

            var l1 = from.line, l2 = to.line;

            if (l1 == l2) return getLine(l1).text.slice(from.ch, to.ch);

            var code = [getLine(l1).text.slice(from.ch)];

            doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });

            code.push(getLine(l2).text.slice(0, to.ch));

            return code.join("\n");

        }

• 笙默考试管理系统-MyExamTest----codemirror

        function getSelection() {

            return getRange(sel.from, sel.to);

        }

        var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll

        function slowPoll() {

• 笙默考试管理系统-MyExamTest----codemirror

            if (pollingFast) return;

            poll.set(options.pollInterval, function() {

                startOperation();

                readInput();

                if (focused) slowPoll();

                endOperation();

            });

        }