// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://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 DEFAULT_BRACKETS = "()[]{}''\"\"";
var DEFAULT_EXPLODE_ON_ENTER = "[]{}";
var SPACE_CHAR_REGEX = /\s/;
var Pos = CodeMirror.Pos;
CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) {
if (old != CodeMirror.Init && old)
cm.removeKeyMap("autoCloseBrackets");
if (!val) return;
var pairs = DEFAULT_BRACKETS, explode = DEFAULT_EXPLODE_ON_ENTER;
if (typeof val == "string") pairs = val;
else if (typeof val == "object") {
if (val.pairs != null) pairs = val.pairs;
if (val.explode != null) explode = val.explode;
}
var map = buildKeymap(pairs);
if (explode) map.Enter = buildExplodeHandler(explode);
cm.addKeyMap(map);
});
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;
}
// Project the token type that will exists after the given char is
// typed, and use it to determine whether it would cause the start
// of a string token.
function enteringString(cm, pos, ch) {
var line = cm.getLine(pos.line);
var token = cm.getTokenAt(pos);
if (/\bstring2?\b/.test(token.type)) return false;
var stream = new CodeMirror.StringStream(line.slice(0, pos.ch) + ch + line.slice(pos.ch), 4);
stream.pos = stream.start = token.start;
for (;;) {
var type1 = cm.getMode().token(stream, token.state);
if (stream.pos >= pos.ch + 1) return /\bstring2?\b/.test(type1);
stream.start = stream.pos;
}
}
function buildKeymap(pairs) {
var map = {
name : "autoCloseBrackets",
Backspace: function(cm) {
if (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 || 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));
}
}
};
var closingBrackets = "";
for (var i = 0; i < pairs.length; i += 2) (function(left, right) {
if (left != right) closingBrackets += right;
map["'" + left + "'"] = function(cm) {
if (cm.getOption("disableInput")) return CodeMirror.Pass;
var ranges = cm.listSelections(), type, next;
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 (!range.empty())
curType = "surround";
else if (left == right && next == right) {
if (cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == left + left + left)
curType = "skipThree";
else
curType = "skip";
} else if (left == right && cur.ch > 1 &&
cm.getRange(Pos(cur.line, cur.ch - 2), cur) == left + left &&
(cur.ch <= 2 || cm.getRange(Pos(cur.line, cur.ch - 3), Pos(cur.line, cur.ch - 2)) != left))
curType = "addFour";
else if (left == '"' || left == "'") {
if (!CodeMirror.isWordChar(next) && enteringString(cm, cur, left)) curType = "both";
else return CodeMirror.Pass;
} else if (cm.getLine(cur.line).length == cur.ch || closingBrackets.indexOf(next) >= 0 || SPACE_CHAR_REGEX.test(next))
curType = "both";
else
return CodeMirror.Pass;
if (!type) type = curType;
else if (type != curType) return CodeMirror.Pass;
}
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");
} else if (type == "both") {
cm.replaceSelection(left + right, null);
cm.execCommand("goCharLeft");
} else if (type == "addFour") {
cm.replaceSelection(left + left + left + left, "before");
cm.execCommand("goCharRight");
}
});
};
if (left != right) map["'" + right + "'"] = function(cm) {
var ranges = cm.listSelections();
for (var i = 0; i < ranges.length; i++) {
var range = ranges[i];
if (!range.empty() ||
cm.getRange(range.head, Pos(range.head.line, range.head.ch + 1)) != right)
return CodeMirror.Pass;
}
cm.execCommand("goCharRight");
};
})(pairs.charAt(i), pairs.charAt(i + 1));
return map;
}
function buildExplodeHandler(pairs) {
return function(cm) {
if (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 || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass;
}
cm.operation(function() {
cm.replaceSelection("\n\n", 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);
}
});
};
}
});