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Diffstat (limited to 'js/lib/matchbrackets.js')
-rw-r--r-- | js/lib/matchbrackets.js | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/js/lib/matchbrackets.js b/js/lib/matchbrackets.js deleted file mode 100644 index 70e1ae1..0000000 --- a/js/lib/matchbrackets.js +++ /dev/null @@ -1,120 +0,0 @@ -// CodeMirror, copyright (c) by Marijn Haverbeke and others -// Distributed under an MIT license: http://codemirror.net/LICENSE - -(function(mod) { - if (typeof exports == "object" && typeof module == "object") // CommonJS - mod(require("../../lib/codemirror")); - else if (typeof define == "function" && define.amd) // AMD - define(["../../lib/codemirror"], mod); - else // Plain browser env - mod(CodeMirror); -})(function(CodeMirror) { - var ie_lt8 = /MSIE \d/.test(navigator.userAgent) && - (document.documentMode == null || document.documentMode < 8); - - var Pos = CodeMirror.Pos; - - var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"}; - - function findMatchingBracket(cm, where, strict, config) { - var line = cm.getLineHandle(where.line), pos = where.ch - 1; - var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)]; - if (!match) return null; - var dir = match.charAt(1) == ">" ? 1 : -1; - if (strict && (dir > 0) != (pos == where.ch)) return null; - var style = cm.getTokenTypeAt(Pos(where.line, pos + 1)); - - var found = scanForBracket(cm, Pos(where.line, pos + (dir > 0 ? 1 : 0)), dir, style || null, config); - if (found == null) return null; - return {from: Pos(where.line, pos), to: found && found.pos, - match: found && found.ch == match.charAt(0), forward: dir > 0}; - } - - // bracketRegex is used to specify which type of bracket to scan - // should be a regexp, e.g. /[[\]]/ - // - // Note: If "where" is on an open bracket, then this bracket is ignored. - // - // Returns false when no bracket was found, null when it reached - // maxScanLines and gave up - function scanForBracket(cm, where, dir, style, config) { - var maxScanLen = (config && config.maxScanLineLength) || 10000; - var maxScanLines = (config && config.maxScanLines) || 1000; - - var stack = []; - var re = config && config.bracketRegex ? config.bracketRegex : /[(){}[\]]/; - var lineEnd = dir > 0 ? Math.min(where.line + maxScanLines, cm.lastLine() + 1) - : Math.max(cm.firstLine() - 1, where.line - maxScanLines); - for (var lineNo = where.line; lineNo != lineEnd; lineNo += dir) { - var line = cm.getLine(lineNo); - if (!line) continue; - var pos = dir > 0 ? 0 : line.length - 1, end = dir > 0 ? line.length : -1; - if (line.length > maxScanLen) continue; - if (lineNo == where.line) pos = where.ch - (dir < 0 ? 1 : 0); - for (; pos != end; pos += dir) { - var ch = line.charAt(pos); - if (re.test(ch) && (style === undefined || cm.getTokenTypeAt(Pos(lineNo, pos + 1)) == style)) { - var match = matching[ch]; - if ((match.charAt(1) == ">") == (dir > 0)) stack.push(ch); - else if (!stack.length) return {pos: Pos(lineNo, pos), ch: ch}; - else stack.pop(); - } - } - } - return lineNo - dir == (dir > 0 ? cm.lastLine() : cm.firstLine()) ? false : null; - } - - function matchBrackets(cm, autoclear, config) { - // Disable brace matching in long lines, since it'll cause hugely slow updates - var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000; - var marks = [], ranges = cm.listSelections(); - for (var i = 0; i < ranges.length; i++) { - var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, false, config); - if (match && cm.getLine(match.from.line).length <= maxHighlightLen) { - var style = match.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket"; - marks.push(cm.markText(match.from, Pos(match.from.line, match.from.ch + 1), {className: style})); - if (match.to && cm.getLine(match.to.line).length <= maxHighlightLen) - marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), {className: style})); - } - } - - if (marks.length) { - // Kludge to work around the IE bug from issue #1193, where text - // input stops going to the textare whever this fires. - if (ie_lt8 && cm.state.focused) cm.focus(); - - var clear = function() { - cm.operation(function() { - for (var i = 0; i < marks.length; i++) marks[i].clear(); - }); - }; - if (autoclear) setTimeout(clear, 800); - else return clear; - } - } - - var currentlyHighlighted = null; - function doMatchBrackets(cm) { - cm.operation(function() { - if (currentlyHighlighted) {currentlyHighlighted(); currentlyHighlighted = null;} - currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets); - }); - } - - CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) { - if (old && old != CodeMirror.Init) - cm.off("cursorActivity", doMatchBrackets); - if (val) { - cm.state.matchBrackets = typeof val == "object" ? val : {}; - cm.on("cursorActivity", doMatchBrackets); - } - }); - - CodeMirror.defineExtension("matchBrackets", function() {matchBrackets(this, true);}); - CodeMirror.defineExtension("findMatchingBracket", function(pos, strict, config){ - return findMatchingBracket(this, pos, strict, config); - }); - CodeMirror.defineExtension("scanForBracket", function(pos, dir, style, config){ - return scanForBracket(this, pos, dir, style, config); - }); -}); |