83 lines
3.3 KiB
JavaScript
83 lines
3.3 KiB
JavaScript
(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);
|
|
});
|
|
};
|
|
}
|
|
})();
|