91 lines
3.1 KiB
Swift
91 lines
3.1 KiB
Swift
//
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// Copyright 2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import SignalServiceKit
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public import SignalUI
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public class CVComponentLinkPreview: CVComponentBase, CVComponent {
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public var componentKey: CVComponentKey { .linkPreview }
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private let linkPreviewState: CVComponentState.LinkPreview
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init(itemModel: CVItemModel,
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linkPreviewState: CVComponentState.LinkPreview) {
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self.linkPreviewState = linkPreviewState
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super.init(itemModel: itemModel)
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}
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public func buildComponentView(componentDelegate: CVComponentDelegate) -> CVComponentView {
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CVComponentViewLinkPreview()
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}
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public func configureForRendering(componentView componentViewParam: CVComponentView,
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cellMeasurement: CVCellMeasurement,
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componentDelegate: CVComponentDelegate) {
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guard let componentView = componentViewParam as? CVComponentViewLinkPreview else {
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owsFailDebug("Unexpected componentView.")
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componentViewParam.reset()
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return
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}
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let linkPreviewView = componentView.linkPreviewView
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linkPreviewView.configureForRendering(state: linkPreviewState.state,
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isDraft: false,
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hasAsymmetricalRounding: false,
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cellMeasurement: cellMeasurement)
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}
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private var stackConfig: CVStackViewConfig {
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CVStackViewConfig(axis: .vertical,
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alignment: .fill,
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spacing: 0,
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layoutMargins: .zero)
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}
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public func measure(maxWidth: CGFloat, measurementBuilder: CVCellMeasurement.Builder) -> CGSize {
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owsAssertDebug(maxWidth > 0)
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let maxWidth = min(maxWidth, conversationStyle.maxMediaMessageWidth)
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return LinkPreviewView.measure(maxWidth: maxWidth,
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measurementBuilder: measurementBuilder,
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state: linkPreviewState.state,
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isDraft: false)
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}
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// MARK: - Events
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public override func handleTap(sender: UIGestureRecognizer,
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componentDelegate: CVComponentDelegate,
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componentView: CVComponentView,
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renderItem: CVRenderItem) -> Bool {
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componentDelegate.didTapLinkPreview(linkPreviewState.linkPreview)
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return true
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}
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// MARK: -
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// Used for rendering some portion of an Conversation View item.
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// It could be the entire item or some part thereof.
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public class CVComponentViewLinkPreview: NSObject, CVComponentView {
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fileprivate let linkPreviewView = LinkPreviewView(draftDelegate: nil)
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public var isDedicatedCellView = false
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public var rootView: UIView {
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linkPreviewView
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}
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public func setIsCellVisible(_ isCellVisible: Bool) {}
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public func reset() {
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linkPreviewView.reset()
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}
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}
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}
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