| (function() { |
| var DEFAULT_BRACKETS = "()[]{}''\"\""; |
| var DEFAULT_EXPLODE_ON_ENTER = "[]{}"; |
| var SPACE_CHAR_REGEX = /\s/; |
| |
| 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(CodeMirror.Pos(pos.line, pos.ch - 1), |
| CodeMirror.Pos(pos.line, pos.ch + 1)); |
| return str.length == 2 ? str : null; |
| } |
| |
| function buildKeymap(pairs) { |
| var map = { |
| name : "autoCloseBrackets", |
| Backspace: function(cm) { |
| if (cm.somethingSelected()) return CodeMirror.Pass; |
| var cur = cm.getCursor(), around = charsAround(cm, cur); |
| if (around && pairs.indexOf(around) % 2 == 0) |
| cm.replaceRange("", CodeMirror.Pos(cur.line, cur.ch - 1), CodeMirror.Pos(cur.line, cur.ch + 1)); |
| else |
| return CodeMirror.Pass; |
| } |
| }; |
| var closingBrackets = ""; |
| for (var i = 0; i < pairs.length; i += 2) (function(left, right) { |
| if (left != right) closingBrackets += right; |
| function surround(cm) { |
| var selection = cm.getSelection(); |
| cm.replaceSelection(left + selection + right); |
| } |
| function maybeOverwrite(cm) { |
| var cur = cm.getCursor(), ahead = cm.getRange(cur, CodeMirror.Pos(cur.line, cur.ch + 1)); |
| if (ahead != right || cm.somethingSelected()) return CodeMirror.Pass; |
| else cm.execCommand("goCharRight"); |
| } |
| map["'" + left + "'"] = function(cm) { |
| if (left == "'" && cm.getTokenAt(cm.getCursor()).type == "comment") |
| return CodeMirror.Pass; |
| if (cm.somethingSelected()) return surround(cm); |
| if (left == right && maybeOverwrite(cm) != CodeMirror.Pass) return; |
| var cur = cm.getCursor(), ahead = CodeMirror.Pos(cur.line, cur.ch + 1); |
| var line = cm.getLine(cur.line), nextChar = line.charAt(cur.ch), curChar = cur.ch > 0 ? line.charAt(cur.ch - 1) : ""; |
| if (left == right && CodeMirror.isWordChar(curChar)) |
| return CodeMirror.Pass; |
| if (line.length == cur.ch || closingBrackets.indexOf(nextChar) >= 0 || SPACE_CHAR_REGEX.test(nextChar)) |
| cm.replaceSelection(left + right, {head: ahead, anchor: ahead}); |
| else |
| return CodeMirror.Pass; |
| }; |
| if (left != right) map["'" + right + "'"] = maybeOverwrite; |
| })(pairs.charAt(i), pairs.charAt(i + 1)); |
| return map; |
| } |
| |
| function buildExplodeHandler(pairs) { |
| return function(cm) { |
| var cur = cm.getCursor(), around = charsAround(cm, cur); |
| if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass; |
| cm.operation(function() { |
| var newPos = CodeMirror.Pos(cur.line + 1, 0); |
| cm.replaceSelection("\n\n", {anchor: newPos, head: newPos}, "+input"); |
| cm.indentLine(cur.line + 1, null, true); |
| cm.indentLine(cur.line + 2, null, true); |
| }); |
| }; |
| } |
| })(); |