2 if (typeof exports == "object" && typeof module == "object") // CommonJS
3 mod(require("../../lib/codemirror"));
4 else if (typeof define == "function" && define.amd) // AMD
5 define(["../../lib/codemirror"], mod);
6 else // Plain browser env
8 })(function(CodeMirror) {
9 var ie_lt8 = /MSIE \d/.test(navigator.userAgent) &&
10 (document.documentMode == null || document.documentMode < 8);
12 var Pos = CodeMirror.Pos;
14 var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
16 function findMatchingBracket(cm, where, strict, config) {
17 var line = cm.getLineHandle(where.line), pos = where.ch - 1;
18 var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
19 if (!match) return null;
20 var dir = match.charAt(1) == ">" ? 1 : -1;
21 if (strict && (dir > 0) != (pos == where.ch)) return null;
22 var style = cm.getTokenTypeAt(Pos(where.line, pos + 1));
24 var found = scanForBracket(cm, Pos(where.line, pos + (dir > 0 ? 1 : 0)), dir, style || null, config);
25 return {from: Pos(where.line, pos), to: found && found.pos,
26 match: found && found.ch == match.charAt(0), forward: dir > 0};
29 // bracketRegex is used to specify which type of bracket to scan
30 // should be a regexp, e.g. /[[\]]/
32 // Note: If "where" is on an open bracket, then this bracket is ignored.
33 function scanForBracket(cm, where, dir, style, config) {
34 var maxScanLen = (config && config.maxScanLineLength) || 10000;
35 var maxScanLines = (config && config.maxScanLines) || 500;
38 var re = config && config.bracketRegex ? config.bracketRegex : /[(){}[\]]/;
39 var lineEnd = dir > 0 ? Math.min(where.line + maxScanLines, cm.lastLine() + 1)
40 : Math.max(cm.firstLine() - 1, where.line - maxScanLines);
41 for (var lineNo = where.line; lineNo != lineEnd; lineNo += dir) {
42 var line = cm.getLine(lineNo);
44 var pos = dir > 0 ? 0 : line.length - 1, end = dir > 0 ? line.length : -1;
45 if (line.length > maxScanLen) continue;
46 if (lineNo == where.line) pos = where.ch - (dir < 0 ? 1 : 0);
47 for (; pos != end; pos += dir) {
48 var ch = line.charAt(pos);
49 if (re.test(ch) && (style === undefined || cm.getTokenTypeAt(Pos(lineNo, pos + 1)) == style)) {
50 var match = matching[ch];
51 if ((match.charAt(1) == ">") == (dir > 0)) stack.push(ch);
52 else if (!stack.length) return {pos: Pos(lineNo, pos), ch: ch};
59 function matchBrackets(cm, autoclear, config) {
60 // Disable brace matching in long lines, since it'll cause hugely slow updates
61 var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000;
62 var marks = [], ranges = cm.listSelections();
63 for (var i = 0; i < ranges.length; i++) {
64 var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, false, config);
65 if (match && cm.getLine(match.from.line).length <= maxHighlightLen &&
66 match.to && cm.getLine(match.to.line).length <= maxHighlightLen) {
67 var style = match.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
68 marks.push(cm.markText(match.from, Pos(match.from.line, match.from.ch + 1), {className: style}));
70 marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), {className: style}));
75 // Kludge to work around the IE bug from issue #1193, where text
76 // input stops going to the textare whever this fires.
77 if (ie_lt8 && cm.state.focused) cm.display.input.focus();
79 var clear = function() {
80 cm.operation(function() {
81 for (var i = 0; i < marks.length; i++) marks[i].clear();
84 if (autoclear) setTimeout(clear, 800);
89 var currentlyHighlighted = null;
90 function doMatchBrackets(cm) {
91 cm.operation(function() {
92 if (currentlyHighlighted) {currentlyHighlighted(); currentlyHighlighted = null;}
93 currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets);
97 CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) {
98 if (old && old != CodeMirror.Init)
99 cm.off("cursorActivity", doMatchBrackets);
101 cm.state.matchBrackets = typeof val == "object" ? val : {};
102 cm.on("cursorActivity", doMatchBrackets);
106 CodeMirror.defineExtension("matchBrackets", function() {matchBrackets(this, true);});
107 CodeMirror.defineExtension("findMatchingBracket", function(pos, strict, config){
108 return findMatchingBracket(this, pos, strict, config);
110 CodeMirror.defineExtension("scanForBracket", function(pos, dir, style, config){
111 return scanForBracket(this, pos, dir, style, config);