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