|
0
|
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
|
|
|
2 // Distributed under an MIT license: http://codemirror.net/LICENSE
|
|
|
3
|
|
|
4 // Because sometimes you need to mark the selected *text*.
|
|
|
5 //
|
|
|
6 // Adds an option 'styleSelectedText' which, when enabled, gives
|
|
|
7 // selected text the CSS class given as option value, or
|
|
|
8 // "CodeMirror-selectedtext" when the value is not a string.
|
|
|
9
|
|
|
10 (function(mod) {
|
|
|
11 if (typeof exports == "object" && typeof module == "object") // CommonJS
|
|
|
12 mod(require("../../lib/codemirror"));
|
|
|
13 else if (typeof define == "function" && define.amd) // AMD
|
|
|
14 define(["../../lib/codemirror"], mod);
|
|
|
15 else // Plain browser env
|
|
|
16 mod(CodeMirror);
|
|
|
17 })(function(CodeMirror) {
|
|
|
18 "use strict";
|
|
|
19
|
|
|
20 CodeMirror.defineOption("styleSelectedText", false, function(cm, val, old) {
|
|
|
21 var prev = old && old != CodeMirror.Init;
|
|
|
22 if (val && !prev) {
|
|
|
23 cm.state.markedSelection = [];
|
|
|
24 cm.state.markedSelectionStyle = typeof val == "string" ? val : "CodeMirror-selectedtext";
|
|
|
25 reset(cm);
|
|
|
26 cm.on("cursorActivity", onCursorActivity);
|
|
|
27 cm.on("change", onChange);
|
|
|
28 } else if (!val && prev) {
|
|
|
29 cm.off("cursorActivity", onCursorActivity);
|
|
|
30 cm.off("change", onChange);
|
|
|
31 clear(cm);
|
|
|
32 cm.state.markedSelection = cm.state.markedSelectionStyle = null;
|
|
|
33 }
|
|
|
34 });
|
|
|
35
|
|
|
36 function onCursorActivity(cm) {
|
|
|
37 cm.operation(function() { update(cm); });
|
|
|
38 }
|
|
|
39
|
|
|
40 function onChange(cm) {
|
|
|
41 if (cm.state.markedSelection.length)
|
|
|
42 cm.operation(function() { clear(cm); });
|
|
|
43 }
|
|
|
44
|
|
|
45 var CHUNK_SIZE = 8;
|
|
|
46 var Pos = CodeMirror.Pos;
|
|
|
47 var cmp = CodeMirror.cmpPos;
|
|
|
48
|
|
|
49 function coverRange(cm, from, to, addAt) {
|
|
|
50 if (cmp(from, to) == 0) return;
|
|
|
51 var array = cm.state.markedSelection;
|
|
|
52 var cls = cm.state.markedSelectionStyle;
|
|
|
53 for (var line = from.line;;) {
|
|
|
54 var start = line == from.line ? from : Pos(line, 0);
|
|
|
55 var endLine = line + CHUNK_SIZE, atEnd = endLine >= to.line;
|
|
|
56 var end = atEnd ? to : Pos(endLine, 0);
|
|
|
57 var mark = cm.markText(start, end, {className: cls});
|
|
|
58 if (addAt == null) array.push(mark);
|
|
|
59 else array.splice(addAt++, 0, mark);
|
|
|
60 if (atEnd) break;
|
|
|
61 line = endLine;
|
|
|
62 }
|
|
|
63 }
|
|
|
64
|
|
|
65 function clear(cm) {
|
|
|
66 var array = cm.state.markedSelection;
|
|
|
67 for (var i = 0; i < array.length; ++i) array[i].clear();
|
|
|
68 array.length = 0;
|
|
|
69 }
|
|
|
70
|
|
|
71 function reset(cm) {
|
|
|
72 clear(cm);
|
|
|
73 var ranges = cm.listSelections();
|
|
|
74 for (var i = 0; i < ranges.length; i++)
|
|
|
75 coverRange(cm, ranges[i].from(), ranges[i].to());
|
|
|
76 }
|
|
|
77
|
|
|
78 function update(cm) {
|
|
|
79 if (!cm.somethingSelected()) return clear(cm);
|
|
|
80 if (cm.listSelections().length > 1) return reset(cm);
|
|
|
81
|
|
|
82 var from = cm.getCursor("start"), to = cm.getCursor("end");
|
|
|
83
|
|
|
84 var array = cm.state.markedSelection;
|
|
|
85 if (!array.length) return coverRange(cm, from, to);
|
|
|
86
|
|
|
87 var coverStart = array[0].find(), coverEnd = array[array.length - 1].find();
|
|
|
88 if (!coverStart || !coverEnd || to.line - from.line < CHUNK_SIZE ||
|
|
|
89 cmp(from, coverEnd.to) >= 0 || cmp(to, coverStart.from) <= 0)
|
|
|
90 return reset(cm);
|
|
|
91
|
|
|
92 while (cmp(from, coverStart.from) > 0) {
|
|
|
93 array.shift().clear();
|
|
|
94 coverStart = array[0].find();
|
|
|
95 }
|
|
|
96 if (cmp(from, coverStart.from) < 0) {
|
|
|
97 if (coverStart.to.line - from.line < CHUNK_SIZE) {
|
|
|
98 array.shift().clear();
|
|
|
99 coverRange(cm, from, coverStart.to, 0);
|
|
|
100 } else {
|
|
|
101 coverRange(cm, from, coverStart.from, 0);
|
|
|
102 }
|
|
|
103 }
|
|
|
104
|
|
|
105 while (cmp(to, coverEnd.to) < 0) {
|
|
|
106 array.pop().clear();
|
|
|
107 coverEnd = array[array.length - 1].find();
|
|
|
108 }
|
|
|
109 if (cmp(to, coverEnd.to) > 0) {
|
|
|
110 if (to.line - coverEnd.from.line < CHUNK_SIZE) {
|
|
|
111 array.pop().clear();
|
|
|
112 coverRange(cm, coverEnd.from, to);
|
|
|
113 } else {
|
|
|
114 coverRange(cm, coverEnd.to, to);
|
|
|
115 }
|
|
|
116 }
|
|
|
117 }
|
|
|
118 });
|
