1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
// Highlighting text that matches the selection
//
// Defines an option highlightSelectionMatches, which, when enabled,
// will style strings that match the selection throughout the
// document.
//
// The option can be set to true to simply enable it, or to a
// {minChars, style, wordsOnly, showToken, delay} object to explicitly
// configure it. minChars is the minimum amount of characters that should be
// selected for the behavior to occur, and style is the token style to
// apply to the matches. This will be prefixed by "cm-" to create an
// actual CSS class name. If wordsOnly is enabled, the matches will be
// highlighted only if the selected text is a word. showToken, when enabled,
// will cause the current token to be highlighted when nothing is selected.
// delay is used to specify how much time to wait, in milliseconds, before
// highlighting the matches.
(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) {
"use strict";
var DEFAULT_MIN_CHARS = 2;
var DEFAULT_TOKEN_STYLE = "matchhighlight";
var DEFAULT_DELAY = 100;
var DEFAULT_WORDS_ONLY = false;
function State(options) {
if (typeof options == "object") {
this.minChars = options.minChars;
this.style = options.style;
this.showToken = options.showToken;
this.delay = options.delay;
this.wordsOnly = options.wordsOnly;
}
if (this.style == null) this.style = DEFAULT_TOKEN_STYLE;
if (this.minChars == null) this.minChars = DEFAULT_MIN_CHARS;
if (this.delay == null) this.delay = DEFAULT_DELAY;
if (this.wordsOnly == null) this.wordsOnly = DEFAULT_WORDS_ONLY;
this.overlay = this.timeout = null;
}
CodeMirror.defineOption("highlightSelectionMatches", false, function(cm, val, old) {
if (old && old != CodeMirror.Init) {
var over = cm.state.matchHighlighter.overlay;
if (over) cm.removeOverlay(over);
clearTimeout(cm.state.matchHighlighter.timeout);
cm.state.matchHighlighter = null;
cm.off("cursorActivity", cursorActivity);
}
if (val) {
cm.state.matchHighlighter = new State(val);
highlightMatches(cm);
cm.on("cursorActivity", cursorActivity);
}
});
function cursorActivity(cm) {
var state = cm.state.matchHighlighter;
clearTimeout(state.timeout);
state.timeout = setTimeout(function() {highlightMatches(cm);}, state.delay);
}
function highlightMatches(cm) {
cm.operation(function() {
var state = cm.state.matchHighlighter;
if (state.overlay) {
cm.removeOverlay(state.overlay);
state.overlay = null;
}
if (!cm.somethingSelected() && state.showToken) {
var re = state.showToken === true ? /[\w$]/ : state.showToken;
var cur = cm.getCursor(), line = cm.getLine(cur.line), start = cur.ch, end = start;
while (start && re.test(line.charAt(start - 1))) --start;
while (end < line.length && re.test(line.charAt(end))) ++end;
if (start < end)
cm.addOverlay(state.overlay = makeOverlay(line.slice(start, end), re, state.style));
return;
}
var from = cm.getCursor("from"), to = cm.getCursor("to");
if (from.line != to.line) return;
if (state.wordsOnly && !isWord(cm, from, to)) return;
var selection = cm.getRange(from, to).replace(/^\s+|\s+$/g, "");
if (selection.length >= state.minChars)
cm.addOverlay(state.overlay = makeOverlay(selection, false, state.style));
});
}
function isWord(cm, from, to) {
var str = cm.getRange(from, to);
if (str.match(/^\w+$/) !== null) {
if (from.ch > 0) {
var pos = {line: from.line, ch: from.ch - 1};
var chr = cm.getRange(pos, from);
if (chr.match(/\W/) === null) return false;
}
if (to.ch < cm.getLine(from.line).length) {
var pos = {line: to.line, ch: to.ch + 1};
var chr = cm.getRange(to, pos);
if (chr.match(/\W/) === null) return false;
}
return true;
} else return false;
}
function boundariesAround(stream, re) {
return (!stream.start || !re.test(stream.string.charAt(stream.start - 1))) &&
(stream.pos == stream.string.length || !re.test(stream.string.charAt(stream.pos)));
}
function makeOverlay(query, hasBoundary, style) {
return {token: function(stream) {
if (stream.match(query) &&
(!hasBoundary || boundariesAround(stream, hasBoundary)))
return style;
stream.next();
stream.skipTo(query.charAt(0)) || stream.skipToEnd();
}};
}
});
|
