code: function adjustOffset (index) {
      var elements = getElements();
  
      if (!angular.isNumber(index)) index = ctrl.focusIndex;
      if (!elements.tabs[ index ]) return;
      if (ctrl.shouldCenterTabs) return;
      var tab         = elements.tabs[ index ],
          left        = tab.offsetLeft,
          right       = tab.offsetWidth + left,
          extraOffset = 32;
  
      // If we are selecting the first tab (in LTR and RTL), always set the offset to 0
      if (index == 0) {
        ctrl.offsetLeft = 0;
        return;
      }
  
      if (isRtl()) {
        var tabWidthsBefore = calcTabsWidth(Array.prototype.slice.call(elements.tabs, 0, index));
        var tabWidthsIncluding = calcTabsWidth(Array.prototype.slice.call(elements.tabs, 0, index + 1));
  
        ctrl.offsetLeft = Math.min(ctrl.offsetLeft, fixOffset(tabWidthsBefore));
        ctrl.offsetLeft = Math.max(ctrl.offsetLeft, fixOffset(tabWidthsIncluding - elements.canvas.clientWidth));
      } else {
        ctrl.offsetLeft = Math.max(ctrl.offsetLeft, fixOffset(right - elements.canvas.clientWidth + extraOffset));
        ctrl.offsetLeft = Math.min(ctrl.offsetLeft, fixOffset(left));
      }
    }
docs: Forces the pagination to move the focused tab into view.