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