The Tor Browser / file comparison
comparison: browser/devtools/sourceeditor/codemirror/matchbrackets.js
browser/devtools/sourceeditor/codemirror/matchbrackets.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:f3e5e410d402 |
|---|---|
| 1 (function(mod) { | |
| 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 | |
| 7 mod(CodeMirror); | |
| 8 })(function(CodeMirror) { | |
| 9 var ie_lt8 = /MSIE \d/.test(navigator.userAgent) && | |
| 10 (document.documentMode == null || document.documentMode < 8); | |
| 11 | |
| 12 var Pos = CodeMirror.Pos; | |
| 13 | |
| 14 var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"}; | |
| 15 | |
| 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)); | |
| 23 | |
| 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}; | |
| 27 } | |
| 28 | |
| 29 function scanForBracket(cm, where, dir, style, config) { | |
| 30 var maxScanLen = (config && config.maxScanLineLength) || 10000; | |
| 31 var maxScanLines = (config && config.maxScanLines) || 500; | |
| 32 | |
| 33 var stack = [], re = /[(){}[\]]/; | |
| 34 var lineEnd = dir > 0 ? Math.min(where.line + maxScanLines, cm.lastLine() + 1) | |
| 35 : Math.max(cm.firstLine() - 1, where.line - maxScanLines); | |
| 36 for (var lineNo = where.line; lineNo != lineEnd; lineNo += dir) { | |
| 37 var line = cm.getLine(lineNo); | |
| 38 if (!line) continue; | |
| 39 var pos = dir > 0 ? 0 : line.length - 1, end = dir > 0 ? line.length : -1; | |
| 40 if (line.length > maxScanLen) continue; | |
| 41 if (lineNo == where.line) pos = where.ch - (dir < 0 ? 1 : 0); | |
| 42 for (; pos != end; pos += dir) { | |
| 43 var ch = line.charAt(pos); | |
| 44 if (re.test(ch) && (style === undefined || cm.getTokenTypeAt(Pos(lineNo, pos + 1)) == style)) { | |
| 45 var match = matching[ch]; | |
| 46 if ((match.charAt(1) == ">") == (dir > 0)) stack.push(ch); | |
| 47 else if (!stack.length) return {pos: Pos(lineNo, pos), ch: ch}; | |
| 48 else stack.pop(); | |
| 49 } | |
| 50 } | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 function matchBrackets(cm, autoclear, config) { | |
| 55 // Disable brace matching in long lines, since it'll cause hugely slow updates | |
| 56 var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000; | |
| 57 var marks = [], ranges = cm.listSelections(); | |
| 58 for (var i = 0; i < ranges.length; i++) { | |
| 59 var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, false, config); | |
| 60 if (match && cm.getLine(match.from.line).length <= maxHighlightLen && | |
| 61 match.to && cm.getLine(match.to.line).length <= maxHighlightLen) { | |
| 62 var style = match.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket"; | |
| 63 marks.push(cm.markText(match.from, Pos(match.from.line, match.from.ch + 1), {className: style})); | |
| 64 if (match.to) | |
| 65 marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), {className: style})); | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 if (marks.length) { | |
| 70 // Kludge to work around the IE bug from issue #1193, where text | |
| 71 // input stops going to the textare whever this fires. | |
| 72 if (ie_lt8 && cm.state.focused) cm.display.input.focus(); | |
| 73 | |
| 74 var clear = function() { | |
| 75 cm.operation(function() { | |
| 76 for (var i = 0; i < marks.length; i++) marks[i].clear(); | |
| 77 }); | |
| 78 }; | |
| 79 if (autoclear) setTimeout(clear, 800); | |
| 80 else return clear; | |
| 81 } | |
| 82 } | |
| 83 | |
| 84 var currentlyHighlighted = null; | |
| 85 function doMatchBrackets(cm) { | |
| 86 cm.operation(function() { | |
| 87 if (currentlyHighlighted) {currentlyHighlighted(); currentlyHighlighted = null;} | |
| 88 currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets); | |
| 89 }); | |
| 90 } | |
| 91 | |
| 92 CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) { | |
| 93 if (old && old != CodeMirror.Init) | |
| 94 cm.off("cursorActivity", doMatchBrackets); | |
| 95 if (val) { | |
| 96 cm.state.matchBrackets = typeof val == "object" ? val : {}; | |
| 97 cm.on("cursorActivity", doMatchBrackets); | |
| 98 } | |
| 99 }); | |
| 100 | |
| 101 CodeMirror.defineExtension("matchBrackets", function() {matchBrackets(this, true);}); | |
| 102 CodeMirror.defineExtension("findMatchingBracket", function(pos, strict){ | |
| 103 return findMatchingBracket(this, pos, strict); | |
| 104 }); | |
| 105 CodeMirror.defineExtension("scanForBracket", function(pos, dir, style){ | |
| 106 return scanForBracket(this, pos, dir, style); | |
| 107 }); | |
| 108 }); |
