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@ -83,7 +83,11 @@ public class LinkPreviewDraft: NSObject, LinkPreviewState {
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}
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public func title() -> String? {
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return linkPreviewDraft.title
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guard let value = linkPreviewDraft.title,
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value.count > 0 else {
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return nil
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}
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return value
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}
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public func imageState() -> LinkPreviewImageState {
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@ -114,11 +118,23 @@ public class LinkPreviewSent: NSObject, LinkPreviewState {
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private let linkPreview: OWSLinkPreview
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private let imageAttachment: TSAttachment?
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@objc public let conversationStyle: ConversationStyle
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@objc
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public var imageSize: CGSize {
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guard let attachmentStream = imageAttachment as? TSAttachmentStream else {
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return CGSize.zero
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}
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return attachmentStream.imageSize()
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}
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@objc
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public required init(linkPreview: OWSLinkPreview,
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imageAttachment: TSAttachment?) {
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imageAttachment: TSAttachment?,
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conversationStyle: ConversationStyle) {
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self.linkPreview = linkPreview
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self.imageAttachment = imageAttachment
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self.conversationStyle = conversationStyle
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}
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public func isLoaded() -> Bool {
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@ -142,7 +158,11 @@ public class LinkPreviewSent: NSObject, LinkPreviewState {
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}
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public func title() -> String? {
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return linkPreview.title
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guard let value = linkPreview.title,
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value.count > 0 else {
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return nil
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}
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return value
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}
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public func imageState() -> LinkPreviewImageState {
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@ -188,8 +208,7 @@ public class LinkPreviewSent: NSObject, LinkPreviewState {
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@objc
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public protocol LinkPreviewViewDelegate {
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func linkPreviewCanCancel() -> Bool
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@objc optional func linkPreviewDidCancel()
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@objc optional func linkPreviewDidTap(urlString: String?)
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func linkPreviewDidCancel()
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}
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// MARK: -
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@ -197,7 +216,16 @@ public protocol LinkPreviewViewDelegate {
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@objc
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public class LinkPreviewView: UIStackView {
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private weak var delegate: LinkPreviewViewDelegate?
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private let state: LinkPreviewState
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@objc
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public var state: LinkPreviewState? {
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didSet {
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AssertIsOnMainThread()
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assert(state == nil || oldValue == nil)
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updateContents()
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}
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}
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@available(*, unavailable, message:"use other constructor instead.")
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required init(coder aDecoder: NSCoder) {
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@ -209,58 +237,220 @@ public class LinkPreviewView: UIStackView {
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notImplemented()
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}
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private let imageView = UIImageView()
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private let titleLabel = UILabel()
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private let domainLabel = UILabel()
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private var cancelButton: UIButton?
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private weak var heroImageView: UIView?
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private weak var sentBodyView: UIView?
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private var layoutConstraints = [NSLayoutConstraint]()
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@objc
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public init(state: LinkPreviewState,
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delegate: LinkPreviewViewDelegate?) {
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self.state = state
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public init(delegate: LinkPreviewViewDelegate?) {
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self.delegate = delegate
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super.init(frame: .zero)
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createContents()
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if let delegate = delegate,
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|
delegate.linkPreviewCanCancel() {
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self.isUserInteractionEnabled = true
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self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(wasTapped)))
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|
}
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}
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private var isApproval: Bool {
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|
return delegate != nil
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}
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|
private func createContents() {
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|
private func resetContents() {
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|
|
for subview in subviews {
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|
subview.removeFromSuperview()
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}
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|
self.axis = .horizontal
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|
self.alignment = .center
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|
self.distribution = .fill
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|
self.spacing = 0
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|
|
self.isLayoutMarginsRelativeArrangement = false
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|
|
self.layoutMargins = .zero
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|
cancelButton = nil
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|
|
heroImageView = nil
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|
sentBodyView = nil
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|
|
NSLayoutConstraint.deactivate(layoutConstraints)
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|
|
layoutConstraints = []
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|
|
}
|
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|
|
private func updateContents() {
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|
|
resetContents()
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|
|
self.isUserInteractionEnabled = true
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|
|
self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(wasTapped)))
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|
|
guard let state = state else {
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|
|
return
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|
|
}
|
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|
|
guard isApproval else {
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|
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|
|
createSentContents()
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|
|
return
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|
|
}
|
|
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|
|
guard state.isLoaded() else {
|
|
|
|
|
createLoadingContents()
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|
|
return
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|
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|
|
}
|
|
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|
|
guard isApproval else {
|
|
|
|
|
createMessageContents()
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|
|
createApprovalContents(state: state)
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|
|
}
|
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|
|
private func createSentContents() {
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|
|
guard let state = state as? LinkPreviewSent else {
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|
|
owsFailDebug("Invalid state")
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|
|
return
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|
|
}
|
|
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|
|
createApprovalContents()
|
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|
|
self.addBackgroundView(withBackgroundColor: Theme.backgroundColor)
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|
|
if let imageView = createImageView(state: state) {
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|
|
if sentIsHero(state: state) {
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|
|
createHeroSentContents(state: state,
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|
|
imageView: imageView)
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|
|
} else {
|
|
|
|
|
createNonHeroSentContents(state: state,
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|
|
imageView: imageView)
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|
|
|
}
|
|
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|
|
} else {
|
|
|
|
|
createNonHeroSentContents(state: state,
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|
|
imageView: nil)
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|
|
}
|
|
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|
|
}
|
|
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|
|
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|
|
private func createMessageContents() {
|
|
|
|
|
// TODO:
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|
|
|
|
private func sentHeroImageSize(state: LinkPreviewSent) -> CGSize {
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|
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|
|
let maxMessageWidth = state.conversationStyle.maxMessageWidth
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|
|
let imageSize = state.imageSize
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|
|
let minImageHeight: CGFloat = maxMessageWidth * 0.5
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|
|
let maxImageHeight: CGFloat = maxMessageWidth
|
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|
|
let rawImageHeight = maxMessageWidth * imageSize.height / imageSize.width
|
|
|
|
|
let imageHeight: CGFloat = min(maxImageHeight, max(minImageHeight, rawImageHeight))
|
|
|
|
|
return CGSizeCeil(CGSize(width: maxMessageWidth, height: imageHeight))
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private let approvalHeight: CGFloat = 76
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|
|
|
|
private func createHeroSentContents(state: LinkPreviewSent,
|
|
|
|
|
imageView: UIImageView) {
|
|
|
|
|
self.layoutMargins = .zero
|
|
|
|
|
self.axis = .vertical
|
|
|
|
|
self.alignment = .fill
|
|
|
|
|
|
|
|
|
|
private var cancelButton: UIButton?
|
|
|
|
|
let heroImageSize = sentHeroImageSize(state: state)
|
|
|
|
|
imageView.autoSetDimensions(to: heroImageSize)
|
|
|
|
|
imageView.contentMode = .scaleAspectFill
|
|
|
|
|
imageView.setContentHuggingHigh()
|
|
|
|
|
imageView.setCompressionResistanceHigh()
|
|
|
|
|
imageView.clipsToBounds = true
|
|
|
|
|
// TODO: Cropping, stroke.
|
|
|
|
|
addArrangedSubview(imageView)
|
|
|
|
|
|
|
|
|
|
let textStack = createSentTextStack(state: state)
|
|
|
|
|
textStack.isLayoutMarginsRelativeArrangement = true
|
|
|
|
|
textStack.layoutMargins = UIEdgeInsets(top: sentHeroVMargin, left: sentHeroHMargin, bottom: sentHeroVMargin, right: sentHeroHMargin)
|
|
|
|
|
addArrangedSubview(textStack)
|
|
|
|
|
|
|
|
|
|
heroImageView = imageView
|
|
|
|
|
sentBodyView = textStack
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private func createNonHeroSentContents(state: LinkPreviewSent,
|
|
|
|
|
imageView: UIImageView?) {
|
|
|
|
|
self.layoutMargins = .zero
|
|
|
|
|
self.axis = .horizontal
|
|
|
|
|
self.isLayoutMarginsRelativeArrangement = true
|
|
|
|
|
self.layoutMargins = UIEdgeInsets(top: sentNonHeroVMargin, left: sentNonHeroHMargin, bottom: sentNonHeroVMargin, right: sentNonHeroHMargin)
|
|
|
|
|
self.spacing = sentNonHeroHSpacing
|
|
|
|
|
|
|
|
|
|
if let imageView = imageView {
|
|
|
|
|
imageView.autoSetDimensions(to: CGSize(width: sentNonHeroImageSize, height: sentNonHeroImageSize))
|
|
|
|
|
imageView.contentMode = .scaleAspectFill
|
|
|
|
|
imageView.setContentHuggingHigh()
|
|
|
|
|
imageView.setCompressionResistanceHigh()
|
|
|
|
|
imageView.clipsToBounds = true
|
|
|
|
|
// TODO: Cropping, stroke.
|
|
|
|
|
addArrangedSubview(imageView)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
let textStack = createSentTextStack(state: state)
|
|
|
|
|
addArrangedSubview(textStack)
|
|
|
|
|
|
|
|
|
|
sentBodyView = self
|
|
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|
|
}
|
|
|
|
|
|
|
|
|
|
private func createSentTextStack(state: LinkPreviewSent) -> UIStackView {
|
|
|
|
|
let textStack = UIStackView()
|
|
|
|
|
textStack.axis = .vertical
|
|
|
|
|
textStack.spacing = sentVSpacing
|
|
|
|
|
|
|
|
|
|
if let titleLabel = sentTitleLabel(state: state) {
|
|
|
|
|
textStack.addArrangedSubview(titleLabel)
|
|
|
|
|
}
|
|
|
|
|
let domainLabel = sentDomainLabel(state: state)
|
|
|
|
|
textStack.addArrangedSubview(domainLabel)
|
|
|
|
|
|
|
|
|
|
return textStack
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private let sentMinimumHeroSize: CGFloat = 200
|
|
|
|
|
|
|
|
|
|
private let sentTitleFontSizePoints: CGFloat = 17
|
|
|
|
|
private let sentDomainFontSizePoints: CGFloat = 12
|
|
|
|
|
private let sentVSpacing: CGFloat = 4
|
|
|
|
|
|
|
|
|
|
// The "sent message" mode has two submodes: "hero" and "non-hero".
|
|
|
|
|
private let sentNonHeroHMargin: CGFloat = 6
|
|
|
|
|
private let sentNonHeroVMargin: CGFloat = 6
|
|
|
|
|
private let sentNonHeroImageSize: CGFloat = 72
|
|
|
|
|
private let sentNonHeroHSpacing: CGFloat = 8
|
|
|
|
|
|
|
|
|
|
private let sentHeroHMargin: CGFloat = 12
|
|
|
|
|
private let sentHeroVMargin: CGFloat = 7
|
|
|
|
|
|
|
|
|
|
private func sentIsHero(state: LinkPreviewSent) -> Bool {
|
|
|
|
|
let imageSize = state.imageSize
|
|
|
|
|
return imageSize.width >= sentMinimumHeroSize && imageSize.height >= sentMinimumHeroSize
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private func sentTitleLabel(state: LinkPreviewState) -> UILabel? {
|
|
|
|
|
guard let text = state.title() else {
|
|
|
|
|
return nil
|
|
|
|
|
}
|
|
|
|
|
let label = UILabel()
|
|
|
|
|
label.text = text
|
|
|
|
|
label.font = UIFont.systemFont(ofSize: sentTitleFontSizePoints).ows_mediumWeight()
|
|
|
|
|
label.textColor = Theme.primaryColor
|
|
|
|
|
label.numberOfLines = 2
|
|
|
|
|
label.lineBreakMode = .byWordWrapping
|
|
|
|
|
return label
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private func createApprovalContents() {
|
|
|
|
|
private func sentDomainLabel(state: LinkPreviewState) -> UILabel {
|
|
|
|
|
let label = UILabel()
|
|
|
|
|
if let displayDomain = state.displayDomain(),
|
|
|
|
|
displayDomain.count > 0 {
|
|
|
|
|
label.text = displayDomain.uppercased()
|
|
|
|
|
} else {
|
|
|
|
|
label.text = NSLocalizedString("LINK_PREVIEW_UNKNOWN_DOMAIN", comment: "Label for link previews with an unknown host.").uppercased()
|
|
|
|
|
}
|
|
|
|
|
label.font = UIFont.systemFont(ofSize: sentDomainFontSizePoints)
|
|
|
|
|
label.textColor = Theme.secondaryColor
|
|
|
|
|
return label
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private let approvalHeight: CGFloat = 76
|
|
|
|
|
|
|
|
|
|
private func createApprovalContents(state: LinkPreviewState) {
|
|
|
|
|
self.axis = .horizontal
|
|
|
|
|
self.alignment = .fill
|
|
|
|
|
self.distribution = .equalSpacing
|
|
|
|
|
self.distribution = .fill
|
|
|
|
|
self.spacing = 8
|
|
|
|
|
|
|
|
|
|
NSLayoutConstraint.autoSetPriority(UILayoutPriority.defaultHigh) {
|
|
|
|
|
self.layoutConstraints.append(self.autoSetDimension(.height, toSize: approvalHeight))
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Image
|
|
|
|
|
|
|
|
|
|
if let imageView = createImageView() {
|
|
|
|
|
if let imageView = createImageView(state: state) {
|
|
|
|
|
imageView.contentMode = .scaleAspectFill
|
|
|
|
|
imageView.autoPinToSquareAspectRatio()
|
|
|
|
|
let imageSize = approvalHeight
|
|
|
|
|
@ -346,7 +536,7 @@ public class LinkPreviewView: UIStackView {
|
|
|
|
|
strokeView.autoSetDimension(.height, toSize: CGHairlineWidth())
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private func createImageView() -> UIImageView? {
|
|
|
|
|
private func createImageView(state: LinkPreviewState) -> UIImageView? {
|
|
|
|
|
guard state.isLoaded() else {
|
|
|
|
|
owsFailDebug("State not loaded.")
|
|
|
|
|
return nil
|
|
|
|
|
@ -367,13 +557,16 @@ public class LinkPreviewView: UIStackView {
|
|
|
|
|
private func createLoadingContents() {
|
|
|
|
|
self.axis = .vertical
|
|
|
|
|
self.alignment = .center
|
|
|
|
|
self.autoSetDimension(.height, toSize: approvalHeight)
|
|
|
|
|
|
|
|
|
|
let label = UILabel()
|
|
|
|
|
label.text = NSLocalizedString("LINK_PREVIEW_LOADING", comment: "Indicates that the link preview is being loaded.")
|
|
|
|
|
label.textColor = Theme.secondaryColor
|
|
|
|
|
label.font = UIFont.ows_dynamicTypeBody
|
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addArrangedSubview(label)
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NSLayoutConstraint.autoSetPriority(UILayoutPriority.defaultHigh) {
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self.layoutConstraints.append(self.autoSetDimension(.height, toSize: approvalHeight))
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}
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let activityIndicator = UIActivityIndicatorView(activityIndicatorStyle: .gray)
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activityIndicator.startAnimating()
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addArrangedSubview(activityIndicator)
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let activityIndicatorSize: CGFloat = 25
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activityIndicator.autoSetDimensions(to: CGSize(width: activityIndicatorSize, height: activityIndicatorSize))
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}
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// MARK: Events
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@ -388,14 +581,102 @@ public class LinkPreviewView: UIStackView {
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let hotAreaInset: CGFloat = -20
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let cancelButtonHotArea = cancelButton.bounds.insetBy(dx: hotAreaInset, dy: hotAreaInset)
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if cancelButtonHotArea.contains(cancelLocation) {
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self.delegate?.linkPreviewDidCancel?()
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self.delegate?.linkPreviewDidCancel()
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return
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}
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}
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self.delegate?.linkPreviewDidTap?(urlString: self.state.urlString())
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}
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// MARK: Measurement
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@objc
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public func measure(withSentState state: LinkPreviewSent) -> CGSize {
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switch state.imageState() {
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case .loaded:
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|
if sentIsHero(state: state) {
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|
|
|
return measureSentHero(state: state)
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|
} else {
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|
return measureSentNonHero(state: state, hasImage: true)
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}
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|
default:
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|
|
return measureSentNonHero(state: state, hasImage: false)
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|
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}
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|
}
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|
|
private func measureSentHero(state: LinkPreviewSent) -> CGSize {
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|
let maxMessageWidth = state.conversationStyle.maxMessageWidth
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|
|
var messageHeight: CGFloat = 0
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|
|
let heroImageSize = sentHeroImageSize(state: state)
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|
|
messageHeight += heroImageSize.height
|
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|
|
|
|
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|
|
let textStackSize = sentTextStackSize(state: state, maxWidth: maxMessageWidth - 2 * sentHeroHMargin)
|
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|
|
messageHeight += textStackSize.height + 2 * sentHeroVMargin
|
|
|
|
|
|
|
|
|
|
return CGSizeCeil(CGSize(width: maxMessageWidth, height: messageHeight))
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private func measureSentNonHero(state: LinkPreviewSent, hasImage: Bool) -> CGSize {
|
|
|
|
|
let maxMessageWidth = state.conversationStyle.maxMessageWidth
|
|
|
|
|
|
|
|
|
|
var maxTextWidth = maxMessageWidth - 2 * sentNonHeroHMargin
|
|
|
|
|
if hasImage {
|
|
|
|
|
maxTextWidth -= (sentNonHeroImageSize + sentNonHeroHSpacing)
|
|
|
|
|
}
|
|
|
|
|
let textStackSize = sentTextStackSize(state: state, maxWidth: maxTextWidth)
|
|
|
|
|
|
|
|
|
|
var result = textStackSize
|
|
|
|
|
|
|
|
|
|
if hasImage {
|
|
|
|
|
result.width += sentNonHeroImageSize + sentNonHeroHSpacing
|
|
|
|
|
result.height += max(result.height, sentNonHeroImageSize)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
result.width += 2 * sentNonHeroHMargin
|
|
|
|
|
result.height += 2 * sentNonHeroVMargin
|
|
|
|
|
|
|
|
|
|
return CGSizeCeil(result)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private func sentTextStackSize(state: LinkPreviewSent, maxWidth: CGFloat) -> CGSize {
|
|
|
|
|
let domainLabel = sentDomainLabel(state: state)
|
|
|
|
|
let domainLabelSize = CGSizeCeil(domainLabel.sizeThatFits(CGSize(width: maxWidth, height: CGFloat.greatestFiniteMagnitude)))
|
|
|
|
|
|
|
|
|
|
var result = domainLabelSize
|
|
|
|
|
|
|
|
|
|
if let titleLabel = sentTitleLabel(state: state) {
|
|
|
|
|
let titleLabelSize = CGSizeCeil(titleLabel.sizeThatFits(CGSize(width: maxWidth, height: CGFloat.greatestFiniteMagnitude)))
|
|
|
|
|
result.width = max(result.width, titleLabelSize.width)
|
|
|
|
|
result.height += titleLabelSize.height + sentVSpacing
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return result
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@objc
|
|
|
|
|
public func addBorderViews(bubbleView: OWSBubbleView) {
|
|
|
|
|
if let heroImageView = self.heroImageView {
|
|
|
|
|
let borderView = OWSBubbleShapeView(draw: ())
|
|
|
|
|
borderView.strokeColor = Theme.primaryColor
|
|
|
|
|
borderView.strokeThickness = CGHairlineWidth()
|
|
|
|
|
heroImageView.addSubview(borderView)
|
|
|
|
|
bubbleView.addPartnerView(borderView)
|
|
|
|
|
borderView.ows_autoPinToSuperviewEdges()
|
|
|
|
|
}
|
|
|
|
|
if let sentBodyView = self.sentBodyView {
|
|
|
|
|
let borderView = OWSBubbleShapeView(draw: ())
|
|
|
|
|
let borderColor = UIColor(rgbHex: Theme.isDarkThemeEnabled ? 0x0F1012 : 0xD5D6D6)
|
|
|
|
|
borderView.strokeColor = borderColor
|
|
|
|
|
borderView.strokeThickness = CGHairlineWidth()
|
|
|
|
|
sentBodyView.addSubview(borderView)
|
|
|
|
|
bubbleView.addPartnerView(borderView)
|
|
|
|
|
borderView.ows_autoPinToSuperviewEdges()
|
|
|
|
|
} else {
|
|
|
|
|
owsFailDebug("Missing sentBodyView")
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@objc func didTapCancel(sender: UIButton) {
|
|
|
|
|
self.delegate?.linkPreviewDidCancel?()
|
|
|
|
|
self.delegate?.linkPreviewDidCancel()
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
Matthew Chen
6 years ago