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comparison .cms/lib/codemirror/addon/edit/matchbrackets.js @ 0:78edf6b517a0 draft

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24.10
author Coffee CMS <info@coffee-cms.ru>
date Fri, 11 Oct 2024 22:40:23 +0000
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-1:000000000000 0:78edf6b517a0
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 });