tor-browser

box-navigation.js (794B)

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function IsInFlow(element) {
   var style = window.getComputedStyle(element);
   return style.getPropertyValue("display") !== "none" &&
       style.getPropertyValue("position") !== "absolute" &&
       style.getPropertyValue("position") !== "fixed";
}

function firstInFlowChild(element) {
   var child = element.firstElementChild;
   if (!child || IsInFlow(child))
       return child;
   return nextInFlowSibling(child);
}

function nextInFlowSibling(element) {
   var child = element;
   do {
       child = child.nextElementSibling;
   } while (child && !IsInFlow(child));
   return child;
}

function previousInFlowSibling(element) {
   var child = element;
   do {
       child = child.previousElementSibling;
   } while (child && !IsInFlow(child));
   return child;
}