笙默考試管理系統-MyExamTest----codemirror（53）

目錄

笙默考試管理系統-MyExamTest----codemirror（51）

一、 笙默考試管理系統-MyExamTest----codemirror

二、 笙默考試管理系統-MyExamTest----codemirror

三、 笙默考試管理系統-MyExamTest----codemirror

四、 笙默考試管理系統-MyExamTest----codemirror

五、 笙默考試管理系統-MyExamTest----codemirror

• 笙默考試管理系統-MyExamTest----codemirror

function lineNo(line) {

????????if (line.parent == null) return null;

????????var cur = line.parent, no = indexOf(cur.lines, line);

????????for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {

????????????for (var i = 0, e = chunk.children.length; ; ++i) {

????????????????if (chunk.children[i] == cur) break;

????????????????no += chunk.children[i].chunkSize();

????????????}

????????}

????????return no;

}

• 笙默考試管理系統-MyExamTest----codemirror

????function lineAtHeight(chunk, h) {

????????var n = 0;

????????outer: do {

????????????for (var i = 0, e = chunk.children.length; i < e; ++i) {

????????????????var child = chunk.children[i], ch = child.height;

????????????????if (h < ch) { chunk = child; continue outer; }

????????????????h -= ch;

????????????????n += child.chunkSize();

????????????}

????????????return n;

????????} while (!chunk.lines);

????????for (var i = 0, e = chunk.lines.length; i < e; ++i) {

????????????var line = chunk.lines[i], lh = line.height;

????????????if (h < lh) break;

????????????h -= lh;

????????}

• 笙默考試管理系統-MyExamTest----codemirror

????????return n + i;

????}

????function heightAtLine(chunk, n) {

????????var h = 0;

????????outer: do {

????????????for (var i = 0, e = chunk.children.length; i < e; ++i) {

????????????????var child = chunk.children[i], sz = child.chunkSize();

????????????????if (n < sz) { chunk = child; continue outer; }

????????????????n -= sz;

????????????????h += child.height;

????????????}

• 笙默考試管理系統-MyExamTest----codemirror

????????????return h;

????????} while (!chunk.lines);

????????for (var i = 0; i < n; ++i) h += chunk.lines[i].height;

????????return h;

????}

• 笙默考試管理系統-MyExamTest----codemirror

????// The history object 'chunks' changes that are made close together

????// and at almost the same time into bigger undoable units.

????function History() {

????????this.time = 0;

????????this.done = []; this.undone = [];

????}