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comparison .cms/lib/codemirror/addon/search/match-highlighter.js @ 0:78edf6b517a0 draft

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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 // Highlighting text that matches the selection
5 //
6 // Defines an option highlightSelectionMatches, which, when enabled,
7 // will style strings that match the selection throughout the
8 // document.
9 //
10 // The option can be set to true to simply enable it, or to a
11 // {minChars, style, wordsOnly, showToken, delay} object to explicitly
12 // configure it. minChars is the minimum amount of characters that should be
13 // selected for the behavior to occur, and style is the token style to
14 // apply to the matches. This will be prefixed by "cm-" to create an
15 // actual CSS class name. If wordsOnly is enabled, the matches will be
16 // highlighted only if the selected text is a word. showToken, when enabled,
17 // will cause the current token to be highlighted when nothing is selected.
18 // delay is used to specify how much time to wait, in milliseconds, before
19 // highlighting the matches. If annotateScrollbar is enabled, the occurrences
20 // will be highlighted on the scrollbar via the matchesonscrollbar addon.
21
22 (function(mod) {
23 if (typeof exports == "object" && typeof module == "object") // CommonJS
24 mod(require("../../lib/codemirror"), require("./matchesonscrollbar"));
25 else if (typeof define == "function" && define.amd) // AMD
26 define(["../../lib/codemirror", "./matchesonscrollbar"], mod);
27 else // Plain browser env
28 mod(CodeMirror);
29 })(function(CodeMirror) {
30 "use strict";
31
32 var defaults = {
33 style: "matchhighlight",
34 minChars: 2,
35 delay: 100,
36 wordsOnly: false,
37 annotateScrollbar: false,
38 showToken: false,
39 trim: true
40 }
41
42 function State(options) {
43 this.options = {}
44 for (var name in defaults)
45 this.options[name] = (options && options.hasOwnProperty(name) ? options : defaults)[name]
46 this.overlay = this.timeout = null;
47 this.matchesonscroll = null;
48 this.active = false;
49 }
50
51 CodeMirror.defineOption("highlightSelectionMatches", false, function(cm, val, old) {
52 if (old && old != CodeMirror.Init) {
53 removeOverlay(cm);
54 clearTimeout(cm.state.matchHighlighter.timeout);
55 cm.state.matchHighlighter = null;
56 cm.off("cursorActivity", cursorActivity);
57 cm.off("focus", onFocus)
58 }
59 if (val) {
60 var state = cm.state.matchHighlighter = new State(val);
61 if (cm.hasFocus()) {
62 state.active = true
63 highlightMatches(cm)
64 } else {
65 cm.on("focus", onFocus)
66 }
67 cm.on("cursorActivity", cursorActivity);
68 }
69 });
70
71 function cursorActivity(cm) {
72 var state = cm.state.matchHighlighter;
73 if (state.active || cm.hasFocus()) scheduleHighlight(cm, state)
74 }
75
76 function onFocus(cm) {
77 var state = cm.state.matchHighlighter
78 if (!state.active) {
79 state.active = true
80 scheduleHighlight(cm, state)
81 }
82 }
83
84 function scheduleHighlight(cm, state) {
85 clearTimeout(state.timeout);
86 state.timeout = setTimeout(function() {highlightMatches(cm);}, state.options.delay);
87 }
88
89 function addOverlay(cm, query, hasBoundary, style) {
90 var state = cm.state.matchHighlighter;
91 cm.addOverlay(state.overlay = makeOverlay(query, hasBoundary, style));
92 if (state.options.annotateScrollbar && cm.showMatchesOnScrollbar) {
93 var searchFor = hasBoundary ? new RegExp((/\w/.test(query.charAt(0)) ? "\\b" : "") +
94 query.replace(/[\\\[.+*?(){|^$]/g, "\\$&") +
95 (/\w/.test(query.charAt(query.length - 1)) ? "\\b" : "")) : query;
96 state.matchesonscroll = cm.showMatchesOnScrollbar(searchFor, false,
97 {className: "CodeMirror-selection-highlight-scrollbar"});
98 }
99 }
100
101 function removeOverlay(cm) {
102 var state = cm.state.matchHighlighter;
103 if (state.overlay) {
104 cm.removeOverlay(state.overlay);
105 state.overlay = null;
106 if (state.matchesonscroll) {
107 state.matchesonscroll.clear();
108 state.matchesonscroll = null;
109 }
110 }
111 }
112
113 function highlightMatches(cm) {
114 cm.operation(function() {
115 var state = cm.state.matchHighlighter;
116 removeOverlay(cm);
117 if (!cm.somethingSelected() && state.options.showToken) {
118 var re = state.options.showToken === true ? /[\w$]/ : state.options.showToken;
119 var cur = cm.getCursor(), line = cm.getLine(cur.line), start = cur.ch, end = start;
120 while (start && re.test(line.charAt(start - 1))) --start;
121 while (end < line.length && re.test(line.charAt(end))) ++end;
122 if (start < end)
123 addOverlay(cm, line.slice(start, end), re, state.options.style);
124 return;
125 }
126 var from = cm.getCursor("from"), to = cm.getCursor("to");
127 if (from.line != to.line) return;
128 if (state.options.wordsOnly && !isWord(cm, from, to)) return;
129 var selection = cm.getRange(from, to)
130 if (state.options.trim) selection = selection.replace(/^\s+|\s+$/g, "")
131 if (selection.length >= state.options.minChars)
132 addOverlay(cm, selection, false, state.options.style);
133 });
134 }
135
136 function isWord(cm, from, to) {
137 var str = cm.getRange(from, to);
138 if (str.match(/^\w+$/) !== null) {
139 if (from.ch > 0) {
140 var pos = {line: from.line, ch: from.ch - 1};
141 var chr = cm.getRange(pos, from);
142 if (chr.match(/\W/) === null) return false;
143 }
144 if (to.ch < cm.getLine(from.line).length) {
145 var pos = {line: to.line, ch: to.ch + 1};
146 var chr = cm.getRange(to, pos);
147 if (chr.match(/\W/) === null) return false;
148 }
149 return true;
150 } else return false;
151 }
152
153 function boundariesAround(stream, re) {
154 return (!stream.start || !re.test(stream.string.charAt(stream.start - 1))) &&
155 (stream.pos == stream.string.length || !re.test(stream.string.charAt(stream.pos)));
156 }
157
158 function makeOverlay(query, hasBoundary, style) {
159 return {token: function(stream) {
160 if (stream.match(query) &&
161 (!hasBoundary || boundariesAround(stream, hasBoundary)))
162 return style;
163 stream.next();
164 stream.skipTo(query.charAt(0)) || stream.skipToEnd();
165 }};
166 }
167 });