笙默考试管理系统-MyExamTest----codemirror（15）

笙默考试管理系统-MyExamTest----codemirror（15）

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 focusInput() {

            if (!options.readOnly) input.focus();

        }

        function scrollEditorIntoView() {

            if (!cursor.getBoundingClientRect) return;

            var rect = cursor.getBoundingClientRect();

            // IE returns bogus coordinates when the instance sits inside of an iframe and the cursor is hidden

• 笙默考试管理系统-MyExamTest----codemirror

            if (ie && rect.top == rect.bottom) return;

            var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight);

            if (rect.top < 0 || rect.bottom > winH) cursor.scrollIntoView();

        }

        function scrollCursorIntoView() {

            var cursor = localCoords(sel.inverted ? sel.from : sel.to);

            var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x;

• 笙默考试管理系统-MyExamTest----codemirror

            return scrollIntoView(x, cursor.y, x, cursor.yBot);

        }

        function scrollIntoView(x1, y1, x2, y2) {

            var pl = paddingLeft(), pt = paddingTop(), lh = textHeight();

            y1 += pt; y2 += pt; x1 += pl; x2 += pl;

            var screen = scroller.clientHeight, screentop = scroller.scrollTop, scrolled = false, result = true;

            if (y1 < screentop) {scroller.scrollTop = Math.max(0, y1 - 2*lh); scrolled = true;}

            else if (y2 > screentop + screen) {scroller.scrollTop = y2 + lh - screen; scrolled = true;}

            var screenw = scroller.clientWidth, screenleft = scroller.scrollLeft;

            var gutterw = options.fixedGutter ? gutter.clientWidth : 0;

            if (x1 < screenleft + gutterw) {

• 笙默考试管理系统-MyExamTest----codemirror

                if (x1 < 50) x1 = 0;

                scroller.scrollLeft = Math.max(0, x1 - 10 - gutterw);

                scrolled = true;

            }

            else if (x2 > screenw + screenleft - 3) {

                scroller.scrollLeft = x2 + 10 - screenw;

                scrolled = true;

                if (x2 > code.clientWidth) result = false;

            }

            if (scrolled && options.onScroll) options.onScroll(instance);

            return result;

        }

• 笙默考试管理系统-MyExamTest----codemirror

        function visibleLines() {

            var lh = textHeight(), top = scroller.scrollTop - paddingTop();

            var from_height = Math.max(0, Math.floor(top / lh));

            var to_height = Math.ceil((top + scroller.clientHeight) / lh);

            return {from: lineAtHeight(doc, from_height),

                to: lineAtHeight(doc, to_height)};

        }