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Added loading state for invite contacts #19

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Added loading state for invite contacts #19

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23 changes: 21 additions & 2 deletions TelegramUI/InviteContactsControllerNode.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -224,7 +224,7 @@ private func preparedInviteContactsTransition(account: Account, from fromEntries
let insertions = indicesAndItems.map { ListViewInsertItem(index: $0.0, previousIndex: $0.2, item: $0.1.item(account: account, interaction: interaction), directionHint: nil) }
let updates = updateIndices.map { ListViewUpdateItem(index: $0.0, previousIndex: $0.2, item: $0.1.item(account: account, interaction: interaction), directionHint: nil) }

return InviteContactsTransition(deletions: deletions, insertions: insertions, updates: updates, sortedContats: sortedContats, firstTime: firstTime, animated: animated)
return InviteContactsTransition(deletions: deletions, insertions: insertions, updates: updates, sortedContats: sortedContats, firstTime: firstTime, animated: animated, isLoading: false)
}

private struct InviteContactsTransition {
Expand All @@ -234,6 +234,7 @@ private struct InviteContactsTransition {
let sortedContats: [(DeviceContactStableId, DeviceContactBasicData, Int32)]
let firstTime: Bool
let animated: Bool
let isLoading: Bool
}

final class InviteContactsControllerNode: ASDisplayNode {
Expand Down Expand Up @@ -276,6 +277,8 @@ final class InviteContactsControllerNode: ASDisplayNode {
private var presentationDataDisposable: Disposable?

private let themeAndStringsPromise: Promise<(PresentationTheme, PresentationStrings, PresentationPersonNameOrder, PresentationPersonNameOrder)>

private var chatListEmptyIndicator: ActivityIndicator?

private let _ready = Promise<Bool>()
private var readyValue = false {
Expand Down Expand Up @@ -431,7 +434,8 @@ final class InviteContactsControllerNode: ASDisplayNode {
}
})
|> deliverOnMainQueue


self.enqueueTransition(InviteContactsTransition(deletions: [], insertions: [], updates: [], sortedContats: [], firstTime: true, animated: false, isLoading: true))
self.disposable = transition.start(next: { [weak self] transition in
self?.enqueueTransition(transition)
})
Expand Down Expand Up @@ -518,6 +522,11 @@ final class InviteContactsControllerNode: ASDisplayNode {
let updateSizeAndInsets = ListViewUpdateSizeAndInsets(size: layout.size, insets: insets, headerInsets: headerInsets, duration: duration, curve: listViewCurve)

self.listNode.transaction(deleteIndices: [], insertIndicesAndItems: [], updateIndicesAndItems: [], options: [.Synchronous, .LowLatency], scrollToItem: nil, updateSizeAndInsets: updateSizeAndInsets, stationaryItemRange: nil, updateOpaqueState: nil, completion: { _ in })

if let chatListEmptyIndicator = self.chatListEmptyIndicator {
let indicatorSize = chatListEmptyIndicator.measure(CGSize(width: 100.0, height: 100.0))
transition.updateFrame(node: chatListEmptyIndicator, frame: CGRect(origin: CGPoint(x: floor((layout.size.width - indicatorSize.width) / 2.0), y: updateSizeAndInsets.insets.top + floor((layout.size.height - updateSizeAndInsets.insets.top - updateSizeAndInsets.insets.bottom - indicatorSize.height) / 2.0)), size: indicatorSize))
}

if !hadValidLayout {
self.dequeueTransitions()
Expand Down Expand Up @@ -579,6 +588,16 @@ final class InviteContactsControllerNode: ASDisplayNode {
} else if transition.animated {
options.insert(.AnimateInsertion)
}

if self.chatListEmptyIndicator == nil, transition.isLoading {
let chatListEmptyIndicator = ActivityIndicator(type: .custom(self.presentationData.theme.list.itemAccentColor, 22.0, 1.0, false))
self.chatListEmptyIndicator = chatListEmptyIndicator
self.insertSubnode(chatListEmptyIndicator, aboveSubnode: self.listNode)
} else if !transition.isLoading, let chatListEmptyIndicator = self.chatListEmptyIndicator {
self.chatListEmptyIndicator = nil
chatListEmptyIndicator.removeFromSupernode()
}

self.listNode.transaction(deleteIndices: transition.deletions, insertIndicesAndItems: transition.insertions, updateIndicesAndItems: transition.updates, options: options, updateOpaqueState: nil, completion: { [weak self] _ in
if let strongSelf = self {
strongSelf.readyValue = true
Expand Down