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Update PagerTabStripViewController.swift #713

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Update PagerTabStripViewController.swift #713

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15 changes: 15 additions & 0 deletions Sources/PagerTabStripViewController.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -147,6 +147,21 @@ open class PagerTabStripViewController: UIViewController, UIScrollViewDelegate {
open override var shouldAutomaticallyForwardAppearanceMethods: Bool {
return false
}

open func setupDefaultViewController(at index: Int) {
guard currentIndex != index else { return }
guard isViewLoaded, !self.viewControllers.isEmpty else {
currentIndex = index
return
}
guard view.window != nil else {
let step = (currentIndex < index) ? 1 : -1
for subindex in stride(from: currentIndex+step, through: index, by: step) {
containerView.setContentOffset(CGPoint(x: pageOffsetForChild(at: subindex), y: 0), animated: false)
}
return
}
}

open func moveToViewController(at index: Int, animated: Bool = true) {
guard isViewLoaded && view.window != nil && currentIndex != index else {
Expand Down