笙默考试管理系统-MyExamTest----codemirror（24）

笙默考试管理系统-MyExamTest----codemirror（23）

目录

笙默考试管理系统-MyExamTest----codemirror（23）

一、 笙默考试管理系统-MyExamTest

二、 笙默考试管理系统-MyExamTest

三、 笙默考试管理系统-MyExamTest

四、 笙默考试管理系统-MyExamTest

五、 笙默考试管理系统-MyExamTest

• 笙默考试管理系统-MyExamTest

 function setBookmark(pos) {

            pos = clipPos(pos);

            var bm = new Bookmark(pos.ch);

            getLine(pos.line).addMark(bm);

            return bm;

        }

        function addGutterMarker(line, text, className) {

            if (typeof line == "number") line = getLine(clipLine(line));

            line.gutterMarker = {text: text, style: className};

            gutterDirty = true;

            return line;

        }

• 笙默考试管理系统-MyExamTest

        function removeGutterMarker(line) {

            if (typeof line == "number") line = getLine(clipLine(line));

            line.gutterMarker = null;

            gutterDirty = true;

        }

        function changeLine(handle, op) {

            var no = handle, line = handle;

            if (typeof handle == "number") line = getLine(clipLine(handle));

            else no = lineNo(handle);

            if (no == null) return null;

            if (op(line, no)) changes.push({from: no, to: no + 1});

            else return null;

            return line;

        }

• 笙默考试管理系统-MyExamTest

        function setLineClass(handle, className) {

            return changeLine(handle, function(line) {

                if (line.className != className) {

                    line.className = className;

                    return true;

                }

            });

        }

• 笙默考试管理系统-MyExamTest

        function setLineHidden(handle, hidden) {

            return changeLine(handle, function(line, no) {

                if (line.hidden != hidden) {

                    line.hidden = hidden;

                    updateLineHeight(line, hidden ? 0 : 1);

                    if (hidden && (sel.from.line == no || sel.to.line == no))

                        setSelection(skipHidden(sel.from, sel.from.line, sel.from.ch),

                            skipHidden(sel.to, sel.to.line, sel.to.ch));

                    return (gutterDirty = true);

                }

            });

        }

        function lineInfo(line) {

            if (typeof line == "number") {

                if (!isLine(line)) return null;

                var n = line;

                line = getLine(line);

                if (!line) return null;

            }

• 笙默考试管理系统-MyExamTest

            else {

                var n = lineNo(line);

                if (n == null) return null;

            }

            var marker = line.gutterMarker;

            return {line: n, handle: line, text: line.text, markerText: marker && marker.text,

                markerClass: marker && marker.style, lineClass: line.className};

        }

        function stringWidth(str) {

            measure.innerHTML = "

x

";

            measure.firstChild.firstChild.firstChild.nodeValue = str;

            return measure.firstChild.firstChild.offsetWidth || 10;

        }

        // These are used to go from pixel positions to character

        // positions, taking varying character widths into account.

        function charFromX(line, x) {

            if (x <= 0) return 0;

            var lineObj = getLine(line), text = lineObj.text;

            function getX(len) {

                measure.innerHTML = "

" + lineObj.getHTML(null, null, false, tabText, len) + "

";

                return measure.firstChild.firstChild.offsetWidth;

            }

            var from = 0, fromX = 0, to = text.length, toX;

            // Guess a suitable upper bound for our search.

            var estimated = Math.min(to, Math.ceil(x / charWidth()));

            for (;;) {

                var estX = getX(estimated);

                if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));

                else {toX = estX; to = estimated; break;}