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Apple Messages composer example #383

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merged 6 commits into from
Oct 24, 2023
Merged

Apple Messages composer example #383

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36e5bda
Initial work
martinmitrevski Oct 23, 2023
9b00e9c
Merge branch 'main' of https://github.com/GetStream/stream-chat-swift…
martinmitrevski Oct 23, 2023
9f38811
Updated the animations
martinmitrevski Oct 23, 2023
9c819e7
Code Cleanup
martinmitrevski Oct 24, 2023
8d29b80
Lint fixes
martinmitrevski Oct 24, 2023
b8b0bff
Linting fixes
martinmitrevski Oct 24, 2023
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366 changes: 366 additions & 0 deletions DemoAppSwiftUI/AppleMessageComposerView.swift
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//
// Copyright © 2023 Stream.io Inc. All rights reserved.
//

import StreamChat
import StreamChatSwiftUI
import SwiftUI

@available(iOS 15.0, *)
struct AppleMessageComposerView<Factory: ViewFactory>: View, KeyboardReadable {

@State var text = ""
@State var shouldShow = false

@Injected(\.colors) private var colors
@Injected(\.fonts) private var fonts

// Initial popup size, before the keyboard is shown.
@State private var popupSize: CGFloat = 350
@State private var composerHeight: CGFloat = 0
@State private var keyboardShown = false
@State private var editedMessageWillShow = false

private var factory: Factory
private var channelConfig: ChannelConfig?
@Binding var quotedMessage: ChatMessage?
@Binding var editedMessage: ChatMessage?

@State private var state: AnimationState = .initial
@State private var listScale: CGFloat = 0

public init(
viewFactory: Factory,
viewModel: MessageComposerViewModel? = nil,
channelController: ChatChannelController,
messageController: ChatMessageController? = nil,
quotedMessage: Binding<ChatMessage?>,
editedMessage: Binding<ChatMessage?>,
onMessageSent: @escaping () -> Void
) {
factory = viewFactory
channelConfig = channelController.channel?.config
let vm = viewModel ?? ViewModelsFactory.makeMessageComposerViewModel(
with: channelController,
messageController: messageController
)
_viewModel = StateObject(
wrappedValue: vm
)
_quotedMessage = quotedMessage
_editedMessage = editedMessage
self.onMessageSent = onMessageSent
}

@StateObject var viewModel: MessageComposerViewModel

var onMessageSent: () -> Void

var body: some View {
VStack(spacing: 0) {
HStack(alignment: .bottom) {
Button {
withAnimation(.bouncy) {
switch state {
case .initial:
listScale = 1
state = .expanded
case .expanded:
listScale = 0
state = .initial
}
}
} label: {
Image(systemName: "plus")
.padding(.all, 8)
.foregroundColor(Color.gray)
.background(Color(colors.background1))
.clipShape(Circle())
}
.padding(.bottom, 4)

ComposerInputView(
factory: DefaultViewFactory.shared,
text: $viewModel.text,
selectedRangeLocation: $viewModel.selectedRangeLocation,
command: $viewModel.composerCommand,
addedAssets: viewModel.addedAssets,
addedFileURLs: viewModel.addedFileURLs,
addedCustomAttachments: viewModel.addedCustomAttachments,
quotedMessage: $quotedMessage,
maxMessageLength: channelConfig?.maxMessageLength,
cooldownDuration: viewModel.cooldownDuration,
onCustomAttachmentTap: viewModel.customAttachmentTapped(_:),
removeAttachmentWithId: viewModel.removeAttachment(with:)
)
.overlay(
viewModel.sendButtonEnabled ? sendButton : nil
)
}
.padding(.all, 8)

factory.makeAttachmentPickerView(
attachmentPickerState: $viewModel.pickerState,
filePickerShown: $viewModel.filePickerShown,
cameraPickerShown: $viewModel.cameraPickerShown,
addedFileURLs: $viewModel.addedFileURLs,
onPickerStateChange: viewModel.change(pickerState:),
photoLibraryAssets: viewModel.imageAssets,
onAssetTap: viewModel.imageTapped(_:),
onCustomAttachmentTap: viewModel.customAttachmentTapped(_:),
isAssetSelected: viewModel.isImageSelected(with:),
addedCustomAttachments: viewModel.addedCustomAttachments,
cameraImageAdded: viewModel.cameraImageAdded(_:),
askForAssetsAccessPermissions: viewModel.askForPhotosPermission,
isDisplayed: viewModel.overlayShown,
height: viewModel.overlayShown ? popupSize : 0,
popupHeight: popupSize
)
}
.background(
GeometryReader { proxy in
let frame = proxy.frame(in: .local)
let height = frame.height
Color.clear.preference(key: HeightPreferenceKey.self, value: height)
}
)
.onPreferenceChange(HeightPreferenceKey.self) { value in
if let value = value, value != composerHeight {
self.composerHeight = value
}
}
.onReceive(keyboardWillChangePublisher) { visible in
if visible && !keyboardShown {
if viewModel.composerCommand == nil && !editedMessageWillShow {
withAnimation(.easeInOut(duration: 0.02)) {
viewModel.pickerTypeState = .expanded(.none)
}
}
}
keyboardShown = visible
editedMessageWillShow = false
}
.onReceive(keyboardHeight) { height in
if height > 0 && height != popupSize {
self.popupSize = height - bottomSafeArea
}
}
.overlay(
viewModel.showCommandsOverlay ?
factory.makeCommandsContainerView(
suggestions: viewModel.suggestions,
handleCommand: { commandInfo in
viewModel.handleCommand(
for: $viewModel.text,
selectedRangeLocation: $viewModel.selectedRangeLocation,
command: $viewModel.composerCommand,
extraData: commandInfo
)
}
)
.offset(y: -composerHeight)
.animation(nil) : nil,
alignment: .bottom
)
.modifier(factory.makeComposerViewModifier())
.onChange(of: editedMessage) { _ in
viewModel.text = editedMessage?.text ?? ""
if editedMessage != nil {
editedMessageWillShow = true
viewModel.selectedRangeLocation = editedMessage?.text.count ?? 0
}
}
.accessibilityElement(children: .contain)
.overlay(
ComposerActionsView(viewModel: viewModel, state: $state, listScale: $listScale)
.offset(y: -(UIScreen.main.bounds.height - composerHeight) / 2 + 80)
.allowsHitTesting(state == .expanded)
)
}

private var sendButton: some View {
BottomRightView {
Button {
viewModel.sendMessage(quotedMessage: nil, editedMessage: nil) {
onMessageSent()
}
} label: {
Image(systemName: "arrow.up.circle.fill")
.resizable()
.aspectRatio(contentMode: .fit)
.frame(width: 24)
.foregroundColor(.blue)
}
.padding(.trailing, 4)
.padding(.bottom, !viewModel.addedAssets.isEmpty ? 16 : 8)
}
}
}

@available(iOS 15.0, *)
struct BlurredBackground: View {
var body: some View {
Color.clear
.frame(
width: UIScreen.main.bounds.width,
height: UIScreen.main.bounds.height
)
.background(
.ultraThinMaterial,
in: RoundedRectangle(cornerRadius: 16.0)
)
}
}

struct HeightPreferenceKey: PreferenceKey {
static var defaultValue: CGFloat? = nil

static func reduce(value: inout CGFloat?, nextValue: () -> CGFloat?) {
value = value ?? nextValue()
}
}

enum AnimationState {
case initial, expanded
}

struct ComposerAction: Equatable, Identifiable {
static func == (lhs: ComposerAction, rhs: ComposerAction) -> Bool {
lhs.id == rhs.id
}

var imageName: String
var text: String
var color: Color
var action: () -> Void
var id: String {
"\(imageName)-\(text)"
}
}

@available(iOS 15.0, *)
struct ComposerActionsView: View {

@ObservedObject var viewModel: MessageComposerViewModel

@State var composerActions: [ComposerAction] = []

@Binding var state: AnimationState
@Binding var listScale: CGFloat

var body: some View {
ZStack(alignment: .bottomLeading) {
Color.white.opacity(state == .initial ? 0.2 : 0.5)

BlurredBackground()
.opacity(state == .initial ? 0.0 : 1)

VStack(alignment: .leading, spacing: 30) {
ForEach(composerActions) { composerAction in
Button {
withAnimation {
state = .initial
composerAction.action()
}
} label: {
ComposerActionView(composerAction: composerAction)
}
}
}
.padding(.leading, 40)
.padding(.bottom, 84)
.scaleEffect(
CGSize(
width: state == .initial ? 0 : 1,
height: state == .initial ? 0 : 1
)
)
.offset(
x: state == .initial ? -75 : 0,
y: state == .initial ? 90 : 0
)
}
.onAppear {
setupComposerActions()
}
.edgesIgnoringSafeArea(.all)
.onTapGesture {
withAnimation(.bouncy) {
switch state {
case .initial:
listScale = 1
state = .expanded
case .expanded:
listScale = 0
state = .initial
}
}
}
}

private func setupComposerActions() {
let imageAction: () -> Void = {
viewModel.pickerTypeState = .expanded(.media)
viewModel.pickerState = .photos
}
let commandsAction: () -> Void = {
viewModel.pickerTypeState = .expanded(.instantCommands)
}
let filesAction: () -> Void = {
viewModel.pickerTypeState = .expanded(.media)
viewModel.pickerState = .files
}
let cameraAction: () -> Void = {
viewModel.pickerTypeState = .expanded(.media)
viewModel.pickerState = .camera
}

composerActions = [
ComposerAction(
imageName: "photo.on.rectangle",
text: "Photos",
color: .purple,
action: imageAction
),
ComposerAction(
imageName: "camera.circle.fill",
text: "Camera",
color: .gray,
action: cameraAction
),
ComposerAction(
imageName: "folder.circle",
text: "Files",
color: .indigo,
action: filesAction
),
ComposerAction(
imageName: "command.circle.fill",
text: "Commands",
color: .orange,
action: commandsAction
)
]
}
}

struct ComposerActionView: View {

private let imageSize: CGFloat = 34

var composerAction: ComposerAction

var body: some View {
HStack(spacing: 20) {
Image(systemName: composerAction.imageName)
.resizable()
.scaledToFit()
.foregroundColor(composerAction.color)
.frame(width: imageSize, height: imageSize)

Text(composerAction.text)
.foregroundColor(.primary)
.font(.title2)
}
}
}
4 changes: 4 additions & 0 deletions StreamChatSwiftUI.xcodeproj/project.pbxproj
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Expand Up @@ -165,6 +165,7 @@
844EF8ED2809AACD00CC82F9 /* NoContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 844EF8EC2809AACD00CC82F9 /* NoContentView.swift */; };
84507C98281AC40F0081DDC2 /* AddUsersViewModel_Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84507C97281AC40F0081DDC2 /* AddUsersViewModel_Tests.swift */; };
84507C9A281ACCD70081DDC2 /* AddUsersView_Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84507C99281ACCD70081DDC2 /* AddUsersView_Tests.swift */; };
8451617E2AE7B093000A9230 /* AppleMessageComposerView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8451617D2AE7B093000A9230 /* AppleMessageComposerView.swift */; };
8463D9262836617F002B1894 /* ChannelListPage.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8463D9252836617F002B1894 /* ChannelListPage.swift */; };
8465FBBE2746873A00AF091E /* StreamChatSwiftUI.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 8465FBB52746873A00AF091E /* StreamChatSwiftUI.framework */; };
8465FCBF27468B6900AF091E /* DemoAppSwiftUIApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8465FCBE27468B6900AF091E /* DemoAppSwiftUIApp.swift */; };
Expand Down Expand Up @@ -667,6 +668,7 @@
844EF8EC2809AACD00CC82F9 /* NoContentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NoContentView.swift; sourceTree = "<group>"; };
84507C97281AC40F0081DDC2 /* AddUsersViewModel_Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AddUsersViewModel_Tests.swift; sourceTree = "<group>"; };
84507C99281ACCD70081DDC2 /* AddUsersView_Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AddUsersView_Tests.swift; sourceTree = "<group>"; };
8451617D2AE7B093000A9230 /* AppleMessageComposerView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppleMessageComposerView.swift; sourceTree = "<group>"; };
8463D9252836617F002B1894 /* ChannelListPage.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChannelListPage.swift; sourceTree = "<group>"; };
8465FBB52746873A00AF091E /* StreamChatSwiftUI.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = StreamChatSwiftUI.framework; sourceTree = BUILT_PRODUCTS_DIR; };
8465FBBD2746873A00AF091E /* StreamChatSwiftUITests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = StreamChatSwiftUITests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
Expand Down Expand Up @@ -1417,6 +1419,7 @@
8465FDDC2747A14700AF091E /* CustomComposerAttachmentView.swift */,
84335013274BAB15007A1B81 /* ViewFactoryExamples.swift */,
84FF723E2782FB2E006E26C8 /* iMessagePocView.swift */,
8451617D2AE7B093000A9230 /* AppleMessageComposerView.swift */,
8417AE912ADEDB6400445021 /* UserRepository.swift */,
84EDBC36274FE5CD0057218D /* Localizable.strings */,
8465FCCA27468B7500AF091E /* Info.plist */,
Expand Down Expand Up @@ -2672,6 +2675,7 @@
84B288D1274CEDD000DD090B /* GroupNameView.swift in Sources */,
84335014274BAB15007A1B81 /* ViewFactoryExamples.swift in Sources */,
8465FCDE274694D200AF091E /* CustomChannelHeader.swift in Sources */,
8451617E2AE7B093000A9230 /* AppleMessageComposerView.swift in Sources */,
84B288D3274D23AF00DD090B /* LoginView.swift in Sources */,
84B288D5274D286500DD090B /* LoginViewModel.swift in Sources */,
8465FCBF27468B6900AF091E /* DemoAppSwiftUIApp.swift in Sources */,
Expand Down
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