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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE
(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) {
var defaults = {
pairs: "()[]{}''\"\"",
closeBefore: ")]}'\":;>",
triples: "",
explode: "[]{}"
};
var Pos = CodeMirror.Pos;
CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) {
if (old && old != CodeMirror.Init) {
cm.removeKeyMap(keyMap);
cm.state.closeBrackets = null;
}
if (val) {
ensureBound(getOption(val, "pairs"))
cm.state.closeBrackets = val;
cm.addKeyMap(keyMap);
}
});
function getOption(conf, name) {
if (name == "pairs" && typeof conf == "string") return conf;
if (typeof conf == "object" && conf[name] != null) return conf[name];
return defaults[name];
}
var keyMap = {Backspace: handleBackspace, Enter: handleEnter};
function ensureBound(chars) {
for (var i = 0; i < chars.length; i++) {
var ch = chars.charAt(i), key = "'" + ch + "'"
if (!keyMap[key]) keyMap[key] = handler(ch)
}
}
ensureBound(defaults.pairs + "`")
function handler(ch) {
return function(cm) { return handleChar(cm, ch); };
}
function getConfig(cm) {
var deflt = cm.state.closeBrackets;
if (!deflt || deflt.override) return deflt;
var mode = cm.getModeAt(cm.getCursor());
return mode.closeBrackets || deflt;
}
function handleBackspace(cm) {
var conf = getConfig(cm);
if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;
var pairs = getOption(conf, "pairs");
var ranges = cm.listSelections();
for (var i = 0; i < ranges.length; i++) {
if (!ranges[i].empty()) return CodeMirror.Pass;
var around = charsAround(cm, ranges[i].head);
if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
}
for (var i = ranges.length - 1; i >= 0; i--) {
var cur = ranges[i].head;
cm.replaceRange("", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1), "+delete");
}
}
function handleEnter(cm) {
var conf = getConfig(cm);
var explode = conf && getOption(conf, "explode");
if (!explode || cm.getOption("disableInput")) return CodeMirror.Pass;
var ranges = cm.listSelections();
for (var i = 0; i < ranges.length; i++) {
if (!ranges[i].empty()) return CodeMirror.Pass;
var around = charsAround(cm, ranges[i].head);
if (!around || explode.indexOf(around) % 2 != 0) return CodeMirror.Pass;
}
cm.operation(function() {
var linesep = cm.lineSeparator() || "\n";
cm.replaceSelection(linesep + linesep, null);
cm.execCommand("goCharLeft");
ranges = cm.listSelections();
for (var i = 0; i < ranges.length; i++) {
var line = ranges[i].head.line;
cm.indentLine(line, null, true);
cm.indentLine(line + 1, null, true);
}
});
}
function contractSelection(sel) {
var inverted = CodeMirror.cmpPos(sel.anchor, sel.head) > 0;
return {anchor: new Pos(sel.anchor.line, sel.anchor.ch + (inverted ? -1 : 1)),
head: new Pos(sel.head.line, sel.head.ch + (inverted ? 1 : -1))};
}
function handleChar(cm, ch) {
var conf = getConfig(cm);
if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass;
var pairs = getOption(conf, "pairs");
var pos = pairs.indexOf(ch);
if (pos == -1) return CodeMirror.Pass;
var closeBefore = getOption(conf,"closeBefore");
var triples = getOption(conf, "triples");
var identical = pairs.charAt(pos + 1) == ch;
var ranges = cm.listSelections();
var opening = pos % 2 == 0;
var type;
for (var i = 0; i < ranges.length; i++) {
var range = ranges[i], cur = range.head, curType;
var next = cm.getRange(cur, Pos(cur.line, cur.ch + 1));
if (opening && !range.empty()) {
curType = "surround";
} else if ((identical || !opening) && next == ch) {
if (identical && stringStartsAfter(cm, cur))
curType = "both";
else if (triples.indexOf(ch) >= 0 && cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == ch + ch + ch)
curType = "skipThree";
else
curType = "skip";
} else if (identical && cur.ch > 1 && triples.indexOf(ch) >= 0 &&
cm.getRange(Pos(cur.line, cur.ch - 2), cur) == ch + ch) {
if (cur.ch > 2 && /\bstring/.test(cm.getTokenTypeAt(Pos(cur.line, cur.ch - 2)))) return CodeMirror.Pass;
curType = "addFour";
} else if (identical) {
var prev = cur.ch == 0 ? " " : cm.getRange(Pos(cur.line, cur.ch - 1), cur)
if (!CodeMirror.isWordChar(next) && prev != ch && !CodeMirror.isWordChar(prev)) curType = "both";
else return CodeMirror.Pass;
} else if (opening && (next.length === 0 || /\s/.test(next) || closeBefore.indexOf(next) > -1)) {
curType = "both";
} else {
return CodeMirror.Pass;
}
if (!type) type = curType;
else if (type != curType) return CodeMirror.Pass;
}
var left = pos % 2 ? pairs.charAt(pos - 1) : ch;
var right = pos % 2 ? ch : pairs.charAt(pos + 1);
cm.operation(function() {
if (type == "skip") {
cm.execCommand("goCharRight");
} else if (type == "skipThree") {
for (var i = 0; i < 3; i++)
cm.execCommand("goCharRight");
} else if (type == "surround") {
var sels = cm.getSelections();
for (var i = 0; i < sels.length; i++)
sels[i] = left + sels[i] + right;
cm.replaceSelections(sels, "around");
sels = cm.listSelections().slice();
for (var i = 0; i < sels.length; i++)
sels[i] = contractSelection(sels[i]);
cm.setSelections(sels);
} else if (type == "both") {
cm.replaceSelection(left + right, null);
cm.triggerElectric(left + right);
cm.execCommand("goCharLeft");
} else if (type == "addFour") {
cm.replaceSelection(left + left + left + left, "before");
cm.execCommand("goCharRight");
}
});
}
function charsAround(cm, pos) {
var str = cm.getRange(Pos(pos.line, pos.ch - 1),
Pos(pos.line, pos.ch + 1));
return str.length == 2 ? str : null;
}
function stringStartsAfter(cm, pos) {
var token = cm.getTokenAt(Pos(pos.line, pos.ch + 1))
return /\bstring/.test(token.type) && token.start == pos.ch &&
(pos.ch == 0 || !/\bstring/.test(cm.getTokenTypeAt(pos)))
}
});