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@ -5,6 +5,7 @@
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import Foundation
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import AVFoundation
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import MediaPlayer
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import PromiseKit
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@objc
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public protocol AttachmentApprovalViewControllerDelegate: class {
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@ -12,8 +13,82 @@ public protocol AttachmentApprovalViewControllerDelegate: class {
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func attachmentApproval(_ attachmentApproval: AttachmentApprovalViewController, didCancelAttachments attachments: [SignalAttachment])
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}
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struct SignalAttachmentItem: Hashable {
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class AttachmentItemCollection {
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private (set) var attachmentItems: [SignalAttachmentItem]
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init(attachmentItems: [SignalAttachmentItem]) {
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self.attachmentItems = attachmentItems
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}
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func itemAfter(item: SignalAttachmentItem) -> SignalAttachmentItem? {
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guard let currentIndex = attachmentItems.index(of: item) else {
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owsFailDebug("currentIndex was unexpectedly nil")
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return nil
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}
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let nextIndex = attachmentItems.index(after: currentIndex)
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return attachmentItems[safe: nextIndex]
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}
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func itemBefore(item: SignalAttachmentItem) -> SignalAttachmentItem? {
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guard let currentIndex = attachmentItems.index(of: item) else {
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owsFailDebug("currentIndex was unexpectedly nil")
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return nil
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}
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let prevIndex = attachmentItems.index(before: currentIndex)
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return attachmentItems[safe: prevIndex]
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}
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func remove(item: SignalAttachmentItem) {
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attachmentItems = attachmentItems.filter { $0 != item }
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}
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}
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class SignalAttachmentItem: Hashable {
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enum SignalAttachmentItemError: Error {
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case noThumbnail
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}
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let attachment: SignalAttachment
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init(attachment: SignalAttachment) {
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self.attachment = attachment
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}
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// MARK:
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var imageSize: CGSize = .zero
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func getThumbnailImage() -> Promise<UIImage> {
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return DispatchQueue.global().async(.promise) { () -> UIImage in
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guard let image = self.attachment.image() else {
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throw SignalAttachmentItemError.noThumbnail
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}
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return image
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}.tap { result in
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switch result {
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case .fulfilled(let image):
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self.imageSize = image.size
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default: break
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}
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}
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}
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// MARK: Hashable
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public var hashValue: Int {
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return attachment.hashValue
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}
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// MARK: Equatable
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static func == (lhs: SignalAttachmentItem, rhs: SignalAttachmentItem) -> Bool {
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return lhs.attachment == rhs.attachment
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}
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}
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@objc
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@ -37,7 +112,8 @@ public class AttachmentApprovalViewController: UIPageViewController, UIPageViewC
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@objc
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required public init(attachments: [SignalAttachment]) {
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assert(attachments.count > 0)
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self.attachmentItems = attachments.map { SignalAttachmentItem(attachment: $0 )}
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let attachmentItems = attachments.map { SignalAttachmentItem(attachment: $0 )}
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self.attachmentItemCollection = AttachmentItemCollection(attachmentItems: attachmentItems)
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super.init(transitionStyle: .scroll,
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navigationOrientation: .horizontal,
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options: [UIPageViewControllerOptionInterPageSpacingKey: kSpacingBetweenItems])
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@ -62,6 +138,9 @@ public class AttachmentApprovalViewController: UIPageViewController, UIPageViewC
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// MARK: View Lifecycle
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let galleryRailView = GalleryRailView()
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let railContainerView = UIView()
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override public func viewDidLoad() {
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super.viewDidLoad()
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@ -69,6 +148,27 @@ public class AttachmentApprovalViewController: UIPageViewController, UIPageViewC
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disablePagingIfNecessary()
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railContainerView.backgroundColor = UIColor.black.withAlphaComponent(0.6)
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view.addSubview(railContainerView)
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railContainerView.preservesSuperviewLayoutMargins = true
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railContainerView.layoutMargins.bottom = 50
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railContainerView.autoPinEdgesToSuperviewEdges(with: .zero, excludingEdge: .top)
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let footerGradientView = GradientView(from: .clear, to: .black)
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railContainerView.addSubview(footerGradientView)
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footerGradientView.autoPinEdgesToSuperviewEdges(with: .zero, excludingEdge: .top)
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footerGradientView.autoSetDimension(.height, toSize: ScaleFromIPhone5(100))
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railContainerView.addSubview(galleryRailView)
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galleryRailView.delegate = self
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galleryRailView.scrollFocusMode = .keepWithinBounds
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galleryRailView.autoPinEdge(toSuperviewEdge: .leading)
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galleryRailView.autoPinEdge(toSuperviewEdge: .trailing)
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galleryRailView.autoPinEdge(toSuperviewMargin: .top)
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galleryRailView.autoPinEdge(toSuperviewMargin: .bottom)
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galleryRailView.autoSetDimension(.height, toSize: 72)
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// Bottom Toolbar
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let captioningToolbar = CaptioningToolbar()
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@ -124,6 +224,62 @@ public class AttachmentApprovalViewController: UIPageViewController, UIPageViewC
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// MARK: - View Helpers
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func remove(attachmentItem: SignalAttachmentItem) {
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if attachmentItem == currentItem {
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if let nextItem = attachmentItemCollection.itemAfter(item: attachmentItem) {
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setCurrentItem(nextItem, direction: .forward, animated: true)
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} else if let prevItem = attachmentItemCollection.itemBefore(item: attachmentItem) {
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setCurrentItem(prevItem, direction: .reverse, animated: true)
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} else {
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owsFailDebug("removing last item shouldn't be possible because rail should not be visible")
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return
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}
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}
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guard let cell = galleryRailView.cellViews.first(where: { $0.item === attachmentItem }) else {
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owsFailDebug("cell was unexpectedly nil")
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return
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}
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UIView.animate(withDuration: 0.2,
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animations: {
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// shrink stack view item until it disappears
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cell.isHidden = true
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// simultaneously fade out
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cell.alpha = 0
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},
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completion: { _ in
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self.attachmentItemCollection.remove(item: attachmentItem)
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self.updateMediaRail()
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})
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}
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func addDeleteIcon(cellViews: [GalleryRailCellView]) {
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for cellView in cellViews {
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guard let attachmentItem = cellView.item as? SignalAttachmentItem else {
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owsFailDebug("attachmentItem was unexpectedly nil")
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return
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}
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let button = OWSButton { [weak self] in
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guard let self = self else { return }
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self.remove(attachmentItem: attachmentItem)
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}
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button.setImage(#imageLiteral(resourceName: "ic_small_x"), for: .normal)
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let kInsetDistance: CGFloat = 5
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button.imageEdgeInsets = UIEdgeInsets(top: kInsetDistance, left: kInsetDistance, bottom: kInsetDistance, right: kInsetDistance)
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cellView.addSubview(button)
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let kButtonWidth: CGFloat = 9 + kInsetDistance * 2
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button.autoSetDimensions(to: CGSize(width: kButtonWidth, height: kButtonWidth))
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button.autoPinEdge(toSuperviewMargin: .top)
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button.autoPinEdge(toSuperviewMargin: .trailing)
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}
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}
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var pagerScrollView: UIScrollView?
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// This is kind of a hack. Since we don't have first class access to the superview's `scrollView`
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// we traverse the view hierarchy until we find it, then disable scrolling if there's only one
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@ -195,6 +351,7 @@ public class AttachmentApprovalViewController: UIPageViewController, UIPageViewC
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},
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completion: nil)
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previousPage.zoomOut(animated: false)
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updateMediaRail()
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}
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}
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}
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@ -274,10 +431,28 @@ public class AttachmentApprovalViewController: UIPageViewController, UIPageViewC
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}
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self.setViewControllers([page], direction: direction, animated: isAnimated, completion: nil)
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// TODO update rail
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updateMediaRail()
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}
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func updateMediaRail() {
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guard let currentItem = self.currentItem else {
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owsFailDebug("currentItem was unexpectedly nil")
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return
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}
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galleryRailView.configureCellViews(itemProvider: attachmentItemCollection, focusedItem: currentItem)
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addDeleteIcon(cellViews: galleryRailView.cellViews)
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railContainerView.isHidden = attachmentItemCollection.attachmentItems.count < 2
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captioningToolbar.alwaysShowGradient = railContainerView.isHidden
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}
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let attachmentItemCollection: AttachmentItemCollection
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var attachmentItems: [SignalAttachmentItem] {
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return attachmentItemCollection.attachmentItems
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}
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let attachmentItems: [SignalAttachmentItem]
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var attachments: [SignalAttachment] {
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return attachmentItems.map { $0.attachment }
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}
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@ -348,6 +523,49 @@ public class AttachmentApprovalViewController: UIPageViewController, UIPageViewC
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}
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}
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// MARK: GalleryRail
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extension SignalAttachmentItem: GalleryRailItem {
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var aspectRatio: CGFloat {
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return self.imageSize.aspectRatio
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}
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func getRailImage() -> Promise<UIImage> {
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return self.getThumbnailImage()
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}
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}
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extension AttachmentItemCollection: GalleryRailItemProvider {
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var railItems: [GalleryRailItem] {
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return self.attachmentItems
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}
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}
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extension AttachmentApprovalViewController: GalleryRailViewDelegate {
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public func galleryRailView(_ galleryRailView: GalleryRailView, didTapItem imageRailItem: GalleryRailItem) {
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guard let targetItem = imageRailItem as? SignalAttachmentItem else {
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owsFailDebug("unexpected imageRailItem: \(imageRailItem)")
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return
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}
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guard let currentIndex = attachmentItems.index(of: currentItem) else {
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owsFailDebug("currentIndex was unexpectedly nil")
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return
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}
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guard let targetIndex = attachmentItems.index(of: targetItem) else {
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owsFailDebug("targetIndex was unexpectedly nil")
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return
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}
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let direction: NavigationDirection = currentIndex < targetIndex ? .forward : .reverse
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self.setCurrentItem(targetItem, direction: direction, animated: true)
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}
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}
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// MARK: - Individual Page
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public class AttachmentPrepViewController: OWSViewController, PlayerProgressBarDelegate, OWSVideoPlayerDelegate {
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// We sometimes shrink the attachment view so that it remains somewhat visible
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// when the keyboard is presented.
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@ -734,8 +952,8 @@ class CaptioningToolbar: UIView, UITextViewDelegate {
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set { self.textView.text = newValue }
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}
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private let bottomGradient: GradientView
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private let lengthLimitLabel: UILabel
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private let bottomGradient: GradientView = GradientView(from: .clear, to: .black)
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private let lengthLimitLabel: UILabel = UILabel()
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// Layout Constants
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@ -770,10 +988,8 @@ class CaptioningToolbar: UIView, UITextViewDelegate {
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init() {
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self.sendButton = UIButton(type: .system)
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self.bottomGradient = GradientView(from: UIColor.clear, to: UIColor.black)
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self.textView = MessageTextView()
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self.textViewHeight = kMinTextViewHeight
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self.lengthLimitLabel = UILabel()
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super.init(frame: CGRect.zero)
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@ -785,15 +1001,13 @@ class CaptioningToolbar: UIView, UITextViewDelegate {
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textView.delegate = self
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textView.keyboardAppearance = Theme.keyboardAppearance
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textView.backgroundColor = (Theme.isDarkThemeEnabled ? UIColor.ows_gray90 : UIColor.ows_gray02)
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textView.layer.borderColor = (Theme.isDarkThemeEnabled
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? Theme.primaryColor.withAlphaComponent(0.06).cgColor
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: Theme.primaryColor.withAlphaComponent(0.12).cgColor)
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textView.backgroundColor = Theme.darkThemeBackgroundColor
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textView.layer.borderColor = Theme.darkThemePrimaryColor.cgColor
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textView.layer.borderWidth = 0.5
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textView.layer.cornerRadius = kMinTextViewHeight / 2
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textView.font = UIFont.ows_dynamicTypeBody
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textView.textColor = Theme.primaryColor
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textView.textColor = Theme.darkThemePrimaryColor
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textView.returnKeyType = .done
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textView.textContainerInset = UIEdgeInsets(top: 7, left: 7, bottom: 7, right: 7)
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textView.scrollIndicatorInsets = UIEdgeInsets(top: 5, left: 0, bottom: 5, right: 3)
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@ -804,17 +1018,7 @@ class CaptioningToolbar: UIView, UITextViewDelegate {
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sendButton.titleLabel?.font = UIFont.ows_mediumFont(withSize: 16)
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sendButton.titleLabel?.textAlignment = .center
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sendButton.tintColor = UIColor.white
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sendButton.backgroundColor = UIColor.ows_systemPrimaryButton
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sendButton.layer.cornerRadius = 4
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// Send Button Shadow - without this the send button bottom doesn't feel aligned with the toolbar.
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let kSendButtonShadowOffset: CGFloat = 1
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sendButton.layer.shadowColor = UIColor.darkGray.cgColor
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sendButton.layer.shadowOffset = CGSize(width: 0, height: kSendButtonShadowOffset)
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sendButton.layer.shadowOpacity = 0.8
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sendButton.layer.shadowRadius = 0.0
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sendButton.layer.masksToBounds = false
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sendButton.tintColor = Theme.galleryHighlightColor
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// Increase hit area of send button
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sendButton.contentEdgeInsets = UIEdgeInsets(top: 6, left: 8, bottom: 6, right: 8)
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@ -831,13 +1035,14 @@ class CaptioningToolbar: UIView, UITextViewDelegate {
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self.lengthLimitLabel.isHidden = true
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let contentView = UIView()
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addSubview(contentView)
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contentView.autoPinEdgesToSuperviewEdges()
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contentView.addSubview(bottomGradient)
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contentView.addSubview(sendButton)
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contentView.addSubview(textView)
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contentView.addSubview(lengthLimitLabel)
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addSubview(contentView)
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contentView.autoPinEdgesToSuperviewEdges()
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// Layout
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let kToolbarMargin: CGFloat = 8
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@ -860,9 +1065,7 @@ class CaptioningToolbar: UIView, UITextViewDelegate {
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textView.autoPinEdge(toSuperviewMargin: .bottom)
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sendButton.autoPinEdge(.left, to: .right, of: textView, withOffset: kToolbarMargin)
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// Because the textview has a border, the sendButton feels unaligned without this shadow and offset
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sendButton.autoPinEdge(.bottom, to: .bottom, of: textView, withOffset: -kSendButtonShadowOffset)
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sendButton.autoPinEdge(.bottom, to: .bottom, of: textView, withOffset: -3)
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sendButton.autoPinEdge(toSuperviewMargin: .right)
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sendButton.setContentHuggingHigh()
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@ -874,6 +1077,7 @@ class CaptioningToolbar: UIView, UITextViewDelegate {
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lengthLimitLabel.setContentHuggingHigh()
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lengthLimitLabel.setCompressionResistanceHigh()
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bottomGradient.isHidden = true
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let bottomGradientHeight = ScaleFromIPhone5(100)
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bottomGradient.autoSetDimension(.height, toSize: bottomGradientHeight)
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bottomGradient.autoPinEdgesToSuperviewEdges(with: .zero, excludingEdge: .top)
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@ -931,12 +1135,30 @@ class CaptioningToolbar: UIView, UITextViewDelegate {
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}
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}
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var alwaysShowGradient: Bool = false {
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didSet {
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if alwaysShowGradient {
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bottomGradient.isHidden = false
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}
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}
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}
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public func textViewDidBeginEditing(_ textView: UITextView) {
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self.captioningToolbarDelegate?.captioningToolbarDidBeginEditing(self)
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if !alwaysShowGradient {
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UIView.animate(withDuration: 0.2) {
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self.bottomGradient.isHidden = false
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}
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}
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}
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public func textViewDidEndEditing(_ textView: UITextView) {
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self.captioningToolbarDelegate?.captioningToolbarDidEndEditing(self)
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if !alwaysShowGradient {
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UIView.animate(withDuration: 0.2) {
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self.bottomGradient.isHidden = true
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}
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}
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}
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// MARK: - Helpers
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Michael Kirk
7 years ago
