111 lines
5.1 KiB
Swift
111 lines
5.1 KiB
Swift
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final class InputView : UIView, InputViewButtonDelegate, InputTextViewDelegate {
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private let delegate: InputViewDelegate
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var text: String {
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get { inputTextView.text }
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set { inputTextView.text = newValue }
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}
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override var intrinsicContentSize: CGSize { CGSize.zero }
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// MARK: UI Components
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private lazy var cameraButton = InputViewButton(icon: #imageLiteral(resourceName: "actionsheet_camera_black"), delegate: self)
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private lazy var libraryButton = InputViewButton(icon: #imageLiteral(resourceName: "actionsheet_camera_roll_black"), delegate: self)
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private lazy var gifButton = InputViewButton(icon: #imageLiteral(resourceName: "actionsheet_gif_black"), delegate: self)
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private lazy var documentButton = InputViewButton(icon: #imageLiteral(resourceName: "actionsheet_document_black"), delegate: self)
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private lazy var sendButton = InputViewButton(icon: #imageLiteral(resourceName: "ArrowUp"), isSendButton: true, delegate: self)
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private lazy var inputTextView = InputTextView(delegate: self)
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// MARK: Lifecycle
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init(delegate: InputViewDelegate) {
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self.delegate = delegate
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super.init(frame: CGRect.zero)
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setUpViewHierarchy()
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}
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override init(frame: CGRect) {
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preconditionFailure("Use init(delegate:) instead.")
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}
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required init?(coder: NSCoder) {
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preconditionFailure("Use init(delegate:) instead.")
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}
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private func setUpViewHierarchy() {
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autoresizingMask = .flexibleHeight
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// Background & blur
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let backgroundView = UIView()
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backgroundView.backgroundColor = isLightMode ? .white : .black
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backgroundView.alpha = Values.lowOpacity
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addSubview(backgroundView)
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backgroundView.pin(to: self)
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let blurView = UIVisualEffectView(effect: UIBlurEffect(style: .regular))
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addSubview(blurView)
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blurView.pin(to: self)
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// Separator
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let separator = UIView()
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separator.backgroundColor = Colors.text.withAlphaComponent(0.2)
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separator.set(.height, to: 1 / UIScreen.main.scale)
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addSubview(separator)
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separator.pin([ UIView.HorizontalEdge.leading, UIView.VerticalEdge.top, UIView.HorizontalEdge.trailing ], to: self)
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// Buttons
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func container(for button: InputViewButton) -> UIView {
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let result = UIView()
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result.addSubview(button)
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result.set(.width, to: InputViewButton.expandedSize)
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result.set(.height, to: InputViewButton.expandedSize)
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button.center(in: result)
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return result
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}
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let (cameraButtonContainer, libraryButtonContainer, gifButtonContainer, documentButtonContainer) = (container(for: cameraButton), container(for: libraryButton), container(for: gifButton), container(for: documentButton))
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let buttonStackView = UIStackView(arrangedSubviews: [ cameraButtonContainer, libraryButtonContainer, gifButtonContainer, documentButtonContainer, UIView.hStretchingSpacer() ])
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buttonStackView.axis = .horizontal
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buttonStackView.spacing = Values.smallSpacing
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// Bottom stack view
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let bottomStackView = UIStackView(arrangedSubviews: [ inputTextView, container(for: sendButton) ])
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bottomStackView.axis = .horizontal
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bottomStackView.spacing = Values.smallSpacing
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// Main stack view
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let mainStackView = UIStackView(arrangedSubviews: [ buttonStackView, bottomStackView ])
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mainStackView.axis = .vertical
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mainStackView.spacing = 12
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mainStackView.isLayoutMarginsRelativeArrangement = true
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let adjustment = (InputViewButton.expandedSize - InputViewButton.size) / 2
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mainStackView.layoutMargins = UIEdgeInsets(top: Values.smallSpacing, leading: Values.largeSpacing, bottom: Values.smallSpacing, trailing: Values.largeSpacing - adjustment)
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addSubview(mainStackView)
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mainStackView.pin(.top, to: .bottom, of: separator)
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mainStackView.pin([ UIView.HorizontalEdge.leading, UIView.HorizontalEdge.trailing ], to: self)
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mainStackView.pin(.bottom, to: .bottom, of: self, withInset: -12)
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}
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// MARK: Updating
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func inputTextViewDidChangeSize(_ inputTextView: InputTextView) {
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invalidateIntrinsicContentSize()
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}
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// MARK: Interaction
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func handleInputViewButtonTapped(_ inputViewButton: InputViewButton) {
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if inputViewButton == cameraButton { delegate.handleCameraButtonTapped() }
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if inputViewButton == libraryButton { delegate.handleLibraryButtonTapped() }
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if inputViewButton == gifButton { delegate.handleGIFButtonTapped() }
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if inputViewButton == documentButton { delegate.handleDocumentButtonTapped() }
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if inputViewButton == sendButton { delegate.handleSendButtonTapped() }
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}
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override func resignFirstResponder() -> Bool {
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inputTextView.resignFirstResponder()
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}
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}
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// MARK: Delegate
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protocol InputViewDelegate {
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func handleCameraButtonTapped()
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func handleLibraryButtonTapped()
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func handleGIFButtonTapped()
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func handleDocumentButtonTapped()
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func handleSendButtonTapped()
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}
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