source: [view]
try{ // catch unexpected/unrecreatable errors (#7808) since we can recover using a semi-acceptable native method
node = dojo.byId(node);
var doc = node.ownerDocument || dojo.doc,
body = doc.body || dojo.body(),
html = doc.documentElement || body.parentNode,
isIE = dojo.isIE, isWK = dojo.isWebKit;
// if an untested browser, then use the native method
if((!(dojo.isMoz || isIE || isWK || dojo.isOpera) || node == body || node == html) && (typeof node.scrollIntoView != "undefined")){
node.scrollIntoView(false); // short-circuit to native if possible
return;
}
var backCompat = doc.compatMode == 'BackCompat',
clientAreaRoot = (isIE >= 9 && node.ownerDocument.parentWindow.frameElement)
? ((html.clientHeight > 0 && html.clientWidth > 0 && (body.clientHeight == 0 || body.clientWidth == 0 || body.clientHeight > html.clientHeight || body.clientWidth > html.clientWidth)) ? html : body)
: (backCompat ? body : html),
scrollRoot = isWK ? body : clientAreaRoot,
rootWidth = clientAreaRoot.clientWidth,
rootHeight = clientAreaRoot.clientHeight,
rtl = !dojo._isBodyLtr(),
nodePos = pos || dojo.position(node),
el = node.parentNode,
isFixed = function(el){
return ((isIE <= 6 || (isIE && backCompat))? false : (dojo.style(el, 'position').toLowerCase() == "fixed"));
};
if(isFixed(node)){ return; } // nothing to do
while(el){
if(el == body){ el = scrollRoot; }
var elPos = dojo.position(el),
fixedPos = isFixed(el);
if(el == scrollRoot){
elPos.w = rootWidth; elPos.h = rootHeight;
if(scrollRoot == html && isIE && rtl){ elPos.x += scrollRoot.offsetWidth-elPos.w; } // IE workaround where scrollbar causes negative x
if(elPos.x < 0 || !isIE){ elPos.x = 0; } // IE can have values > 0
if(elPos.y < 0 || !isIE){ elPos.y = 0; }
}else{
var pb = dojo._getPadBorderExtents(el);
elPos.w -= pb.w; elPos.h -= pb.h; elPos.x += pb.l; elPos.y += pb.t;
var clientSize = el.clientWidth,
scrollBarSize = elPos.w - clientSize;
if(clientSize > 0 && scrollBarSize > 0){
elPos.w = clientSize;
elPos.x += (rtl && (isIE || el.clientLeft > pb.l/*Chrome*/)) ? scrollBarSize : 0;
}
clientSize = el.clientHeight;
scrollBarSize = elPos.h - clientSize;
if(clientSize > 0 && scrollBarSize > 0){
elPos.h = clientSize;
}
}
if(fixedPos){ // bounded by viewport, not parents
if(elPos.y < 0){
elPos.h += elPos.y; elPos.y = 0;
}
if(elPos.x < 0){
elPos.w += elPos.x; elPos.x = 0;
}
if(elPos.y + elPos.h > rootHeight){
elPos.h = rootHeight - elPos.y;
}
if(elPos.x + elPos.w > rootWidth){
elPos.w = rootWidth - elPos.x;
}
}
// calculate overflow in all 4 directions
var l = nodePos.x - elPos.x, // beyond left: < 0
t = nodePos.y - Math.max(elPos.y, 0), // beyond top: < 0
r = l + nodePos.w - elPos.w, // beyond right: > 0
bot = t + nodePos.h - elPos.h; // beyond bottom: > 0
if(r * l > 0){
var s = Math[l < 0? "max" : "min"](l, r);
if(rtl && ((isIE == 8 && !backCompat) || isIE >= 9)){ s = -s; }
nodePos.x += el.scrollLeft;
el.scrollLeft += s;
nodePos.x -= el.scrollLeft;
}
if(bot * t > 0){
nodePos.y += el.scrollTop;
el.scrollTop += Math[t < 0? "max" : "min"](t, bot);
nodePos.y -= el.scrollTop;
}
el = (el != scrollRoot) && !fixedPos && el.parentNode;
}
}catch(error){
console.error('scrollIntoView: ' + error);
node.scrollIntoView(false);
}