| 1 |
// CodeMirror, copyright (c) by Marijn Haverbeke and others |
| 2 |
// Distributed under an MIT license: http://codemirror.net/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 defaults = { |
| 13 |
pairs: "()[]{}''\"\"", |
| 14 |
triples: "", |
| 15 |
explode: "[]{}" |
| 16 |
}; |
| 17 |
|
| 18 |
var Pos = CodeMirror.Pos; |
| 19 |
|
| 20 |
CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) { |
| 21 |
if (old && old != CodeMirror.Init) { |
| 22 |
cm.removeKeyMap(keyMap); |
| 23 |
cm.state.closeBrackets = null; |
| 24 |
} |
| 25 |
if (val) { |
| 26 |
ensureBound(getOption(val, "pairs")) |
| 27 |
cm.state.closeBrackets = val; |
| 28 |
cm.addKeyMap(keyMap); |
| 29 |
} |
| 30 |
}); |
| 31 |
|
| 32 |
function getOption(conf, name) { |
| 33 |
if (name == "pairs" && typeof conf == "string") return conf; |
| 34 |
if (typeof conf == "object" && conf[name] != null) return conf[name]; |
| 35 |
return defaults[name]; |
| 36 |
} |
| 37 |
|
| 38 |
var keyMap = {Backspace: handleBackspace, Enter: handleEnter}; |
| 39 |
function ensureBound(chars) { |
| 40 |
for (var i = 0; i < chars.length; i++) { |
| 41 |
var ch = chars.charAt(i), key = "'" + ch + "'" |
| 42 |
if (!keyMap[key]) keyMap[key] = handler(ch) |
| 43 |
} |
| 44 |
} |
| 45 |
ensureBound(defaults.pairs + "`") |
| 46 |
|
| 47 |
function handler(ch) { |
| 48 |
return function(cm) { return handleChar(cm, ch); }; |
| 49 |
} |
| 50 |
|
| 51 |
function getConfig(cm) { |
| 52 |
var deflt = cm.state.closeBrackets; |
| 53 |
if (!deflt || deflt.override) return deflt; |
| 54 |
var mode = cm.getModeAt(cm.getCursor()); |
| 55 |
return mode.closeBrackets || deflt; |
| 56 |
} |
| 57 |
|
| 58 |
function handleBackspace(cm) { |
| 59 |
var conf = getConfig(cm); |
| 60 |
if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass; |
| 61 |
|
| 62 |
var pairs = getOption(conf, "pairs"); |
| 63 |
var ranges = cm.listSelections(); |
| 64 |
for (var i = 0; i < ranges.length; i++) { |
| 65 |
if (!ranges[i].empty()) return CodeMirror.Pass; |
| 66 |
var around = charsAround(cm, ranges[i].head); |
| 67 |
if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass; |
| 68 |
} |
| 69 |
for (var i = ranges.length - 1; i >= 0; i--) { |
| 70 |
var cur = ranges[i].head; |
| 71 |
cm.replaceRange("", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1), "+delete"); |
| 72 |
} |
| 73 |
} |
| 74 |
|
| 75 |
function handleEnter(cm) { |
| 76 |
var conf = getConfig(cm); |
| 77 |
var explode = conf && getOption(conf, "explode"); |
| 78 |
if (!explode || cm.getOption("disableInput")) return CodeMirror.Pass; |
| 79 |
|
| 80 |
var ranges = cm.listSelections(); |
| 81 |
for (var i = 0; i < ranges.length; i++) { |
| 82 |
if (!ranges[i].empty()) return CodeMirror.Pass; |
| 83 |
var around = charsAround(cm, ranges[i].head); |
| 84 |
if (!around || explode.indexOf(around) % 2 != 0) return CodeMirror.Pass; |
| 85 |
} |
| 86 |
cm.operation(function() { |
| 87 |
var linesep = cm.lineSeparator() || "\n"; |
| 88 |
cm.replaceSelection(linesep + linesep, null); |
| 89 |
cm.execCommand("goCharLeft"); |
| 90 |
ranges = cm.listSelections(); |
| 91 |
for (var i = 0; i < ranges.length; i++) { |
| 92 |
var line = ranges[i].head.line; |
| 93 |
cm.indentLine(line, null, true); |
| 94 |
cm.indentLine(line + 1, null, true); |
| 95 |
} |
| 96 |
}); |
| 97 |
} |
| 98 |
|
| 99 |
function contractSelection(sel) { |
| 100 |
var inverted = CodeMirror.cmpPos(sel.anchor, sel.head) > 0; |
| 101 |
return {anchor: new Pos(sel.anchor.line, sel.anchor.ch + (inverted ? -1 : 1)), |
| 102 |
head: new Pos(sel.head.line, sel.head.ch + (inverted ? 1 : -1))}; |
| 103 |
} |
| 104 |
|
| 105 |
function handleChar(cm, ch) { |
| 106 |
var conf = getConfig(cm); |
| 107 |
if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass; |
| 108 |
|
| 109 |
var pairs = getOption(conf, "pairs"); |
| 110 |
var pos = pairs.indexOf(ch); |
| 111 |
if (pos == -1) return CodeMirror.Pass; |
| 112 |
var triples = getOption(conf, "triples"); |
| 113 |
|
| 114 |
var identical = pairs.charAt(pos + 1) == ch; |
| 115 |
var ranges = cm.listSelections(); |
| 116 |
var opening = pos % 2 == 0; |
| 117 |
|
| 118 |
var type; |
| 119 |
for (var i = 0; i < ranges.length; i++) { |
| 120 |
var range = ranges[i], cur = range.head, curType; |
| 121 |
var next = cm.getRange(cur, Pos(cur.line, cur.ch + 1)); |
| 122 |
if (opening && !range.empty()) { |
| 123 |
curType = "surround"; |
| 124 |
} else if ((identical || !opening) && next == ch) { |
| 125 |
if (identical && stringStartsAfter(cm, cur)) |
| 126 |
curType = "both"; |
| 127 |
else if (triples.indexOf(ch) >= 0 && cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == ch + ch + ch) |
| 128 |
curType = "skipThree"; |
| 129 |
else |
| 130 |
curType = "skip"; |
| 131 |
} else if (identical && cur.ch > 1 && triples.indexOf(ch) >= 0 && |
| 132 |
cm.getRange(Pos(cur.line, cur.ch - 2), cur) == ch + ch && |
| 133 |
(cur.ch <= 2 || cm.getRange(Pos(cur.line, cur.ch - 3), Pos(cur.line, cur.ch - 2)) != ch)) { |
| 134 |
curType = "addFour"; |
| 135 |
} else if (identical) { |
| 136 |
var prev = cur.ch == 0 ? " " : cm.getRange(Pos(cur.line, cur.ch - 1), cur) |
| 137 |
if (!CodeMirror.isWordChar(next) && prev != ch && !CodeMirror.isWordChar(prev)) curType = "both"; |
| 138 |
else return CodeMirror.Pass; |
| 139 |
} else if (opening && (cm.getLine(cur.line).length == cur.ch || |
| 140 |
isClosingBracket(next, pairs) || |
| 141 |
/\s/.test(next))) { |
| 142 |
curType = "both"; |
| 143 |
} else { |
| 144 |
return CodeMirror.Pass; |
| 145 |
} |
| 146 |
if (!type) type = curType; |
| 147 |
else if (type != curType) return CodeMirror.Pass; |
| 148 |
} |
| 149 |
|
| 150 |
var left = pos % 2 ? pairs.charAt(pos - 1) : ch; |
| 151 |
var right = pos % 2 ? ch : pairs.charAt(pos + 1); |
| 152 |
cm.operation(function() { |
| 153 |
if (type == "skip") { |
| 154 |
cm.execCommand("goCharRight"); |
| 155 |
} else if (type == "skipThree") { |
| 156 |
for (var i = 0; i < 3; i++) |
| 157 |
cm.execCommand("goCharRight"); |
| 158 |
} else if (type == "surround") { |
| 159 |
var sels = cm.getSelections(); |
| 160 |
for (var i = 0; i < sels.length; i++) |
| 161 |
sels[i] = left + sels[i] + right; |
| 162 |
cm.replaceSelections(sels, "around"); |
| 163 |
sels = cm.listSelections().slice(); |
| 164 |
for (var i = 0; i < sels.length; i++) |
| 165 |
sels[i] = contractSelection(sels[i]); |
| 166 |
cm.setSelections(sels); |
| 167 |
} else if (type == "both") { |
| 168 |
cm.replaceSelection(left + right, null); |
| 169 |
cm.triggerElectric(left + right); |
| 170 |
cm.execCommand("goCharLeft"); |
| 171 |
} else if (type == "addFour") { |
| 172 |
cm.replaceSelection(left + left + left + left, "before"); |
| 173 |
cm.execCommand("goCharRight"); |
| 174 |
} |
| 175 |
}); |
| 176 |
} |
| 177 |
|
| 178 |
function isClosingBracket(ch, pairs) { |
| 179 |
var pos = pairs.lastIndexOf(ch); |
| 180 |
return pos > -1 && pos % 2 == 1; |
| 181 |
} |
| 182 |
|
| 183 |
function charsAround(cm, pos) { |
| 184 |
var str = cm.getRange(Pos(pos.line, pos.ch - 1), |
| 185 |
Pos(pos.line, pos.ch + 1)); |
| 186 |
return str.length == 2 ? str : null; |
| 187 |
} |
| 188 |
|
| 189 |
function stringStartsAfter(cm, pos) { |
| 190 |
var token = cm.getTokenAt(Pos(pos.line, pos.ch + 1)) |
| 191 |
return /\bstring/.test(token.type) && token.start == pos.ch && |
| 192 |
(pos.ch == 0 || !/\bstring/.test(cm.getTokenTypeAt(pos))) |
| 193 |
} |
| 194 |
}); |
| 195 |
|
