(function (mod){ 
if (typeof exports == "object" && typeof module == "object") mod(require("../../lib/codemirror")); 
 else if (typeof define == "function" && define.amd) define(["../../lib/codemirror"] , mod); 
 else mod(CodeMirror); 
} 
)(function (CodeMirror){ 
"use strict"; 
CodeMirror.defineOption("styleSelectedText", false , function (cm, val, old){ 
var prev = old && old != CodeMirror.Init; 
if (val && !prev) { 
cm.state.markedSelection = [] ; 
cm.state.markedSelectionStyle = typeof val == "string"? val: "CodeMirror-selectedtext"; 
reset(cm); 
cm.on("cursorActivity", onCursorActivity); 
cm.on("change", onChange); 
} 
 else if (!val && prev) { 
cm.off("cursorActivity", onCursorActivity); 
cm.off("change", onChange); 
clear(cm); 
cm.state.markedSelection = cm.state.markedSelectionStyle = null ; 
} 
} 
); 
function onCursorActivity(cm){ 
cm.operation(function (){ 
update(cm); 
} 
); 
} 
function onChange(cm){ 
if (cm.state.markedSelection.length) cm.operation(function (){ 
clear(cm); 
} 
); 
} 
var CHUNK_SIZE = 8; 
var Pos = CodeMirror.Pos; 
var cmp = CodeMirror.cmpPos; 
function coverRange(cm, from, to, addAt){ 
if (cmp(from, to) == 0) return ; 
var array = cm.state.markedSelection; 
var cls = cm.state.markedSelectionStyle; 
for (var line = from.line; 
; ){ 
var start = line == from.line? from: Pos(line, 0); 
var endLine = line + CHUNK_SIZE, atEnd = endLine >= to.line; 
var end = atEnd? to: Pos(endLine, 0); 
var mark = cm.markText(start, end, { 
className: cls}
); 
if (addAt == null ) array.push(mark); 
 else array.splice(addAt++ , 0, mark); 
if (atEnd) break ; 
line = endLine; 
} 
} 
function clear(cm){ 
var array = cm.state.markedSelection; 
for (var i = 0; 
i < _AN_Read_length("length", array); ++i)_AN_Call_clear("clear", array[i]); 
array.length = 0; 
} 
function reset(cm){ 
clear(cm); 
var ranges = cm.listSelections(); 
for (var i = 0; 
i < _AN_Read_length("length", ranges); i++ )coverRange(cm, ranges[i].from(), ranges[i].to()); 
} 
function update(cm){ 
if (!cm.somethingSelected()) return clear(cm); 
if (_AN_Read_length("length", cm.listSelections()) > 1) return reset(cm); 
var from = cm.getCursor("start"), to = cm.getCursor("end"); 
var array = cm.state.markedSelection; 
if (!_AN_Read_length("length", array)) return coverRange(cm, from, to); 
var coverStart = array[0].find(), coverEnd = array[_AN_Read_length("length", array) - 1].find(); 
if (!coverStart || !coverEnd || to.line - from.line < CHUNK_SIZE || cmp(from, coverEnd.to) >= 0 || cmp(to, coverStart.from) <= 0) return reset(cm); 
while (cmp(from, coverStart.from) > 0){ 
_AN_Call_clear("clear", array.shift()); 
coverStart = array[0].find(); 
} 
if (cmp(from, coverStart.from) < 0) { 
if (coverStart.to.line - from.line < CHUNK_SIZE) { 
_AN_Call_clear("clear", array.shift()); 
coverRange(cm, from, coverStart.to, 0); 
} 
 else { 
coverRange(cm, from, coverStart.from, 0); 
} 
} 
while (cmp(to, coverEnd.to) < 0){ 
_AN_Call_clear("clear", array.pop()); 
coverEnd = array[_AN_Read_length("length", array) - 1].find(); 
} 
if (cmp(to, coverEnd.to) > 0) { 
if (to.line - coverEnd.from.line < CHUNK_SIZE) { 
_AN_Call_clear("clear", array.pop()); 
coverRange(cm, coverEnd.from, to); 
} 
 else { 
coverRange(cm, coverEnd.to, to); 
} 
} 
} 
} 
);