1(function() { 2 var DEFAULT_BRACKETS = "()[]{}''\"\""; 3 var SPACE_CHAR_REGEX = /\s/; 4 5 CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) { 6 var wasOn = old && old != CodeMirror.Init; 7 if (val && !wasOn) 8 cm.addKeyMap(buildKeymap(typeof val == "string" ? val : DEFAULT_BRACKETS)); 9 else if (!val && wasOn) 10 cm.removeKeyMap("autoCloseBrackets"); 11 }); 12 13 function buildKeymap(pairs) { 14 var map = { 15 name : "autoCloseBrackets", 16 Backspace: function(cm) { 17 if (cm.somethingSelected()) return CodeMirror.Pass; 18 var cur = cm.getCursor(), line = cm.getLine(cur.line); 19 if (cur.ch && cur.ch < line.length && 20 pairs.indexOf(line.slice(cur.ch - 1, cur.ch + 1)) % 2 == 0) 21 cm.replaceRange("", CodeMirror.Pos(cur.line, cur.ch - 1), CodeMirror.Pos(cur.line, cur.ch + 1)); 22 else 23 return CodeMirror.Pass; 24 } 25 }; 26 var closingBrackets = []; 27 for (var i = 0; i < pairs.length; i += 2) (function(left, right) { 28 if (left != right) closingBrackets.push(right); 29 function surround(cm) { 30 var selection = cm.getSelection(); 31 cm.replaceSelection(left + selection + right); 32 } 33 function maybeOverwrite(cm) { 34 var cur = cm.getCursor(), ahead = cm.getRange(cur, CodeMirror.Pos(cur.line, cur.ch + 1)); 35 if (ahead != right || cm.somethingSelected()) return CodeMirror.Pass; 36 else cm.execCommand("goCharRight"); 37 } 38 map["'" + left + "'"] = function(cm) { 39 if (cm.somethingSelected()) return surround(cm); 40 if (left == right && maybeOverwrite(cm) != CodeMirror.Pass) return; 41 var cur = cm.getCursor(), ahead = CodeMirror.Pos(cur.line, cur.ch + 1); 42 var line = cm.getLine(cur.line), nextChar = line.charAt(cur.ch); 43 if (line.length == cur.ch || closingBrackets.indexOf(nextChar) >= 0 || SPACE_CHAR_REGEX.test(nextChar)) 44 cm.replaceSelection(left + right, {head: ahead, anchor: ahead}); 45 else 46 return CodeMirror.Pass; 47 }; 48 if (left != right) map["'" + right + "'"] = maybeOverwrite; 49 })(pairs.charAt(i), pairs.charAt(i + 1)); 50 return map; 51 } 52})(); 53