Mercurial
comparison .cms/lib/codemirror/addon/edit/matchbrackets.js @ 0:78edf6b517a0 draft
24.10
author | Coffee CMS <info@coffee-cms.ru> |
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date | Fri, 11 Oct 2024 22:40:23 +0000 |
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-1:000000000000 | 0:78edf6b517a0 |
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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others | |
2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE | |
3 | |
4 (function(mod) { | |
5 if (typeof exports == "object" && typeof module == "object") // CommonJS | |
6 mod(require("../../lib/codemirror")); | |
7 else if (typeof define == "function" && define.amd) // AMD | |
8 define(["../../lib/codemirror"], mod); | |
9 else // Plain browser env | |
10 mod(CodeMirror); | |
11 })(function(CodeMirror) { | |
12 var ie_lt8 = /MSIE \d/.test(navigator.userAgent) && | |
13 (document.documentMode == null || document.documentMode < 8); | |
14 | |
15 var Pos = CodeMirror.Pos; | |
16 | |
17 var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<", "<": ">>", ">": "<<"}; | |
18 | |
19 function bracketRegex(config) { | |
20 return config && config.bracketRegex || /[(){}[\]]/ | |
21 } | |
22 | |
23 function findMatchingBracket(cm, where, config) { | |
24 var line = cm.getLineHandle(where.line), pos = where.ch - 1; | |
25 var afterCursor = config && config.afterCursor | |
26 if (afterCursor == null) | |
27 afterCursor = /(^| )cm-fat-cursor($| )/.test(cm.getWrapperElement().className) | |
28 var re = bracketRegex(config) | |
29 | |
30 // A cursor is defined as between two characters, but in vim command mode | |
31 // (i.e. not insert mode), the cursor is visually represented as a | |
32 // highlighted box on top of the 2nd character. Otherwise, we allow matches | |
33 // from before or after the cursor. | |
34 var match = (!afterCursor && pos >= 0 && re.test(line.text.charAt(pos)) && matching[line.text.charAt(pos)]) || | |
35 re.test(line.text.charAt(pos + 1)) && matching[line.text.charAt(++pos)]; | |
36 if (!match) return null; | |
37 var dir = match.charAt(1) == ">" ? 1 : -1; | |
38 if (config && config.strict && (dir > 0) != (pos == where.ch)) return null; | |
39 var style = cm.getTokenTypeAt(Pos(where.line, pos + 1)); | |
40 | |
41 var found = scanForBracket(cm, Pos(where.line, pos + (dir > 0 ? 1 : 0)), dir, style, config); | |
42 if (found == null) return null; | |
43 return {from: Pos(where.line, pos), to: found && found.pos, | |
44 match: found && found.ch == match.charAt(0), forward: dir > 0}; | |
45 } | |
46 | |
47 // bracketRegex is used to specify which type of bracket to scan | |
48 // should be a regexp, e.g. /[[\]]/ | |
49 // | |
50 // Note: If "where" is on an open bracket, then this bracket is ignored. | |
51 // | |
52 // Returns false when no bracket was found, null when it reached | |
53 // maxScanLines and gave up | |
54 function scanForBracket(cm, where, dir, style, config) { | |
55 var maxScanLen = (config && config.maxScanLineLength) || 10000; | |
56 var maxScanLines = (config && config.maxScanLines) || 1000; | |
57 | |
58 var stack = []; | |
59 var re = bracketRegex(config) | |
60 var lineEnd = dir > 0 ? Math.min(where.line + maxScanLines, cm.lastLine() + 1) | |
61 : Math.max(cm.firstLine() - 1, where.line - maxScanLines); | |
62 for (var lineNo = where.line; lineNo != lineEnd; lineNo += dir) { | |
63 var line = cm.getLine(lineNo); | |
64 if (!line) continue; | |
65 var pos = dir > 0 ? 0 : line.length - 1, end = dir > 0 ? line.length : -1; | |
66 if (line.length > maxScanLen) continue; | |
67 if (lineNo == where.line) pos = where.ch - (dir < 0 ? 1 : 0); | |
68 for (; pos != end; pos += dir) { | |
69 var ch = line.charAt(pos); | |
70 if (re.test(ch) && (style === undefined || | |
71 (cm.getTokenTypeAt(Pos(lineNo, pos + 1)) || "") == (style || ""))) { | |
72 var match = matching[ch]; | |
73 if (match && (match.charAt(1) == ">") == (dir > 0)) stack.push(ch); | |
74 else if (!stack.length) return {pos: Pos(lineNo, pos), ch: ch}; | |
75 else stack.pop(); | |
76 } | |
77 } | |
78 } | |
79 return lineNo - dir == (dir > 0 ? cm.lastLine() : cm.firstLine()) ? false : null; | |
80 } | |
81 | |
82 function matchBrackets(cm, autoclear, config) { | |
83 // Disable brace matching in long lines, since it'll cause hugely slow updates | |
84 var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000, | |
85 highlightNonMatching = config && config.highlightNonMatching; | |
86 var marks = [], ranges = cm.listSelections(); | |
87 for (var i = 0; i < ranges.length; i++) { | |
88 var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, config); | |
89 if (match && (match.match || highlightNonMatching !== false) && cm.getLine(match.from.line).length <= maxHighlightLen) { | |
90 var style = match.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket"; | |
91 marks.push(cm.markText(match.from, Pos(match.from.line, match.from.ch + 1), {className: style})); | |
92 if (match.to && cm.getLine(match.to.line).length <= maxHighlightLen) | |
93 marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), {className: style})); | |
94 } | |
95 } | |
96 | |
97 if (marks.length) { | |
98 // Kludge to work around the IE bug from issue #1193, where text | |
99 // input stops going to the textarea whenever this fires. | |
100 if (ie_lt8 && cm.state.focused) cm.focus(); | |
101 | |
102 var clear = function() { | |
103 cm.operation(function() { | |
104 for (var i = 0; i < marks.length; i++) marks[i].clear(); | |
105 }); | |
106 }; | |
107 if (autoclear) setTimeout(clear, 800); | |
108 else return clear; | |
109 } | |
110 } | |
111 | |
112 function doMatchBrackets(cm) { | |
113 cm.operation(function() { | |
114 if (cm.state.matchBrackets.currentlyHighlighted) { | |
115 cm.state.matchBrackets.currentlyHighlighted(); | |
116 cm.state.matchBrackets.currentlyHighlighted = null; | |
117 } | |
118 cm.state.matchBrackets.currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets); | |
119 }); | |
120 } | |
121 | |
122 function clearHighlighted(cm) { | |
123 if (cm.state.matchBrackets && cm.state.matchBrackets.currentlyHighlighted) { | |
124 cm.state.matchBrackets.currentlyHighlighted(); | |
125 cm.state.matchBrackets.currentlyHighlighted = null; | |
126 } | |
127 } | |
128 | |
129 CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) { | |
130 if (old && old != CodeMirror.Init) { | |
131 cm.off("cursorActivity", doMatchBrackets); | |
132 cm.off("focus", doMatchBrackets) | |
133 cm.off("blur", clearHighlighted) | |
134 clearHighlighted(cm); | |
135 } | |
136 if (val) { | |
137 cm.state.matchBrackets = typeof val == "object" ? val : {}; | |
138 cm.on("cursorActivity", doMatchBrackets); | |
139 cm.on("focus", doMatchBrackets) | |
140 cm.on("blur", clearHighlighted) | |
141 } | |
142 }); | |
143 | |
144 CodeMirror.defineExtension("matchBrackets", function() {matchBrackets(this, true);}); | |
145 CodeMirror.defineExtension("findMatchingBracket", function(pos, config, oldConfig){ | |
146 // Backwards-compatibility kludge | |
147 if (oldConfig || typeof config == "boolean") { | |
148 if (!oldConfig) { | |
149 config = config ? {strict: true} : null | |
150 } else { | |
151 oldConfig.strict = config | |
152 config = oldConfig | |
153 } | |
154 } | |
155 return findMatchingBracket(this, pos, config) | |
156 }); | |
157 CodeMirror.defineExtension("scanForBracket", function(pos, dir, style, config){ | |
158 return scanForBracket(this, pos, dir, style, config); | |
159 }); | |
160 }); |