(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.defineExtension("annotateScrollbar", function (options){ 
if (typeof options == "string") options = { 
className: options}
; 
return new Annotation(this, options); 
} 
); 
CodeMirror.defineOption("scrollButtonHeight", 0); 
function Annotation(cm, options){ 
this.cm = cm; 
this.options = options; 
this.buttonHeight = options.scrollButtonHeight || cm.getOption("scrollButtonHeight"); 
this.annotations = [] ; 
this.doRedraw = this.doUpdate = null ; 
this.div = _AN_Call_appendchild("appendChild", cm.getWrapperElement(), _AN_Call_createelement("createElement", document, "div")); 
_AN_Write_csstext("cssText", this.div.style, false , "position: absolute; right: 0; top: 0; z-index: 7; pointer-events: none"); 
this.computeScale(); 
function scheduleRedraw(delay){ 
clearTimeout(self.doRedraw); 
self.doRedraw = _AN_Call_settimeout("setTimeout", window, function (){ 
self.redraw(); 
} 
, delay); 
} 
var self = this; 
cm.on("refresh", this.resizeHandler = function (){ 
clearTimeout(self.doUpdate); 
self.doUpdate = _AN_Call_settimeout("setTimeout", window, function (){ 
if (self.computeScale()) scheduleRedraw(20); 
} 
, 100); 
} 
); 
cm.on("markerAdded", this.resizeHandler); 
cm.on("markerCleared", this.resizeHandler); 
if (options.listenForChanges !== false ) cm.on("change", this.changeHandler = function (){ 
scheduleRedraw(250); 
} 
); 
} 
Annotation.prototype.computeScale = function (){ 
var cm = this.cm; 
var hScale = (cm.getWrapperElement().clientHeight - cm.display.barHeight - this.buttonHeight * 2) / cm.getScrollerElement().scrollHeight; 
if (hScale != this.hScale) { 
this.hScale = hScale; 
return true ; 
} 
} 
; 
Annotation.prototype.update = function (annotations){ 
this.annotations = annotations; 
this.redraw(); 
} 
; 
Annotation.prototype.redraw = function (compute){ 
if (compute !== false ) this.computeScale(); 
var cm = this.cm, hScale = this.hScale; 
var frag = document.createDocumentFragment(), anns = this.annotations; 
var wrapping = cm.getOption("lineWrapping"); 
var singleLineH = wrapping && cm.defaultTextHeight() * 1.5; 
var curLine = null , curLineObj = null ; 
function getY(pos, top){ 
if (curLine != pos.line) { 
curLine = pos.line; 
curLineObj = cm.getLineHandle(curLine); 
} 
if (wrapping && curLineObj.height > singleLineH) return cm.charCoords(pos, "local")[top? "top": "bottom"]; 
var topY = cm.heightAtLine(curLineObj, "local"); 
return topY + (top? 0: curLineObj.height); 
} 
if (cm.display.barWidth) for (var i = 0, nextTop; 
i < _AN_Read_length("length", anns); i++ ){ 
var ann = anns[i]; 
var top = nextTop || getY(ann.from, true ) * hScale; 
var bottom = getY(ann.to, false ) * hScale; 
while (i < _AN_Read_length("length", anns) - 1){ 
nextTop = getY(anns[i + 1].from, true ) * hScale; 
if (nextTop > bottom + 0.9) break ; 
ann = anns[++i]; 
bottom = getY(ann.to, false ) * hScale; 
} 
if (bottom == top) continue ; 
var height = Math.max(bottom - top, 3); 
var elt = _AN_Call_appendchild("appendChild", frag, _AN_Call_createelement("createElement", document, "div")); 
_AN_Write_csstext("cssText", elt.style, false , "position: absolute; right: 0px; width: " + Math.max(cm.display.barWidth - 1, 2) + "px; top: " + (top + this.buttonHeight) + "px; height: " + height + "px"); 
elt.className = this.options.className; 
if (ann.id) { 
_AN_Call_setattribute("setAttribute", elt, "annotation-id", ann.id); 
} 
} 
this.div.textContent = ""; 
_AN_Call_appendchild("appendChild", this.div, frag); 
} 
; 
Annotation.prototype.clear = function (){ 
this.cm.off("refresh", this.resizeHandler); 
this.cm.off("markerAdded", this.resizeHandler); 
this.cm.off("markerCleared", this.resizeHandler); 
if (this.changeHandler) this.cm.off("change", this.changeHandler); 
this.div.parentNode.removeChild(this.div); 
} 
; 
} 
);