Package-level declarations
Types
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data class MessagesLazyListState(val lazyListState: LazyListState, messageOffsetHandler: MessagesLazyListState.MessageOffsetHandler = defaultOffsetHandler)
Provides a wrapper around lazy list state to be used with Messages composable. It is used to keep track of the focused message offset needed to center the focused message in the scroll list.
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Represents where the thread messages start.
Properties
Functions
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fun MessageContainer(messageListItemState: MessageListItemState, onLongItemClick: (Message) -> Unit = {}, onReactionsClick: (Message) -> Unit = {}, onThreadClick: (Message) -> Unit = {}, onGiphyActionClick: (GiphyAction) -> Unit = {}, onQuotedMessageClick: (Message) -> Unit = {}, onMediaGalleryPreviewResult: (MediaGalleryPreviewResult?) -> Unit = {}, dateSeparatorContent: @Composable (DateSeparatorItemState) -> Unit = {
DefaultMessageDateSeparatorContent(dateSeparator = it)
}, unreadSeparatorContent: @Composable (UnreadSeparatorItemState) -> Unit = {
DefaultMessageUnreadSeparatorContent(unreadSeparatorItemState = it)
}, threadSeparatorContent: @Composable (ThreadDateSeparatorItemState) -> Unit = {
DefaultMessageThreadSeparatorContent(threadSeparator = it)
}, systemMessageContent: @Composable (SystemMessageItemState) -> Unit = {
DefaultSystemMessageContent(systemMessageState = it)
}, messageItemContent: @Composable (MessageItemState) -> Unit = {
DefaultMessageItem(
messageItem = it,
onLongItemClick = onLongItemClick,
onReactionsClick = onReactionsClick,
onThreadClick = onThreadClick,
onGiphyActionClick = onGiphyActionClick,
onMediaGalleryPreviewResult = onMediaGalleryPreviewResult,
onQuotedMessageClick = onQuotedMessageClick,
)
}, typingIndicatorContent: @Composable (TypingItemState) -> Unit = { }, emptyThreadPlaceholderItemContent: @Composable (EmptyThreadPlaceholderItemState) -> Unit = { }, startOfTheChannelItemState: @Composable (StartOfTheChannelItemState) -> Unit = { })
Represents the message item container that allows us to customize each type of item in the MessageList.
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fun MessageItem(messageItem: MessageItemState, onLongItemClick: (Message) -> Unit, modifier: Modifier = Modifier, onReactionsClick: (Message) -> Unit = {}, onThreadClick: (Message) -> Unit = {}, onGiphyActionClick: (GiphyAction) -> Unit = {}, onQuotedMessageClick: (Message) -> Unit = {}, onMediaGalleryPreviewResult: (MediaGalleryPreviewResult?) -> Unit = {}, leadingContent: @Composable RowScope.(MessageItemState) -> Unit = {
DefaultMessageItemLeadingContent(messageItem = it)
}, headerContent: @Composable ColumnScope.(MessageItemState) -> Unit = {
DefaultMessageItemHeaderContent(
messageItem = it,
onReactionsClick = onReactionsClick,
)
}, centerContent: @Composable ColumnScope.(MessageItemState) -> Unit = {
DefaultMessageItemCenterContent(
messageItem = it,
onLongItemClick = onLongItemClick,
onMediaGalleryPreviewResult = onMediaGalleryPreviewResult,
onGiphyActionClick = onGiphyActionClick,
onQuotedMessageClick = onQuotedMessageClick,
)
}, footerContent: @Composable ColumnScope.(MessageItemState) -> Unit = {
DefaultMessageItemFooterContent(messageItem = it)
}, trailingContent: @Composable RowScope.(MessageItemState) -> Unit = {
DefaultMessageItemTrailingContent(messageItem = it)
})
The default message container for all messages in the Conversation/Messages screen.
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fun MessageList(viewModel: MessageListViewModel, modifier: Modifier = Modifier, contentPadding: PaddingValues = PaddingValues(vertical = 16.dp), messagesLazyListState: MessagesLazyListState = rememberMessageListState(parentMessageId = viewModel.currentMessagesState.parentMessageId), threadMessagesStart: ThreadMessagesStart = ThreadMessagesStart.BOTTOM, onThreadClick: (Message) -> Unit = { viewModel.openMessageThread(it) }, onLongItemClick: (Message) -> Unit = { viewModel.selectMessage(it) }, onReactionsClick: (Message) -> Unit = { viewModel.selectReactions(it) }, onMessagesPageStartReached: () -> Unit = { viewModel.loadOlderMessages() }, onLastVisibleMessageChanged: (Message) -> Unit = { viewModel.updateLastSeenMessage(it) }, onScrollToBottom: () -> Unit = { viewModel.clearNewMessageState() }, onGiphyActionClick: (GiphyAction) -> Unit = { viewModel.performGiphyAction(it) }, onQuotedMessageClick: (Message) -> Unit = { message ->
viewModel.scrollToMessage(
messageId = message.id,
parentMessageId = message.parentId,
)
}, onMediaGalleryPreviewResult: (MediaGalleryPreviewResult?) -> Unit = {
if (it?.resultType == MediaGalleryPreviewResultType.SHOW_IN_CHAT) {
viewModel.scrollToMessage(
messageId = it.messageId,
parentMessageId = it.parentMessageId,
)
}
}, onMessagesPageEndReached: (String) -> Unit = { viewModel.onBottomEndRegionReached(it) }, onScrollToBottomClicked: (() -> Unit) -> Unit = { viewModel.scrollToBottom(scrollToBottom = it) }, loadingContent: @Composable () -> Unit = { DefaultMessageListLoadingIndicator(modifier) }, emptyContent: @Composable () -> Unit = { DefaultMessageListEmptyContent(modifier) }, helperContent: @Composable BoxScope.() -> Unit = {
DefaultMessagesHelperContent(
messagesState = viewModel.currentMessagesState,
messagesLazyListState = messagesLazyListState,
scrollToBottom = onScrollToBottomClicked,
)
}, loadingMoreContent: @Composable () -> Unit = { DefaultMessagesLoadingMoreIndicator() }, itemContent: @Composable (MessageListItemState) -> Unit = { messageListItem ->
DefaultMessageContainer(
messageListItemState = messageListItem,
onMediaGalleryPreviewResult = onMediaGalleryPreviewResult,
onThreadClick = onThreadClick,
onLongItemClick = onLongItemClick,
onReactionsClick = onReactionsClick,
onGiphyActionClick = onGiphyActionClick,
onQuotedMessageClick = onQuotedMessageClick,
)
})
Default MessageList component, that relies on MessageListViewModel to connect all the data handling operations. It also delegates events to the ViewModel to handle, like long item clicks and pagination.
fun MessageList(currentState: MessageListState, threadMessagesStart: ThreadMessagesStart = ThreadMessagesStart.BOTTOM, modifier: Modifier = Modifier, contentPadding: PaddingValues = PaddingValues(vertical = 16.dp), messagesLazyListState: MessagesLazyListState = rememberMessageListState(parentMessageId = currentState.parentMessageId), onMessagesPageStartReached: () -> Unit = {}, onLastVisibleMessageChanged: (Message) -> Unit = {}, onScrolledToBottom: () -> Unit = {}, onThreadClick: (Message) -> Unit = {}, onLongItemClick: (Message) -> Unit = {}, onReactionsClick: (Message) -> Unit = {}, onMediaGalleryPreviewResult: (MediaGalleryPreviewResult?) -> Unit = {}, onGiphyActionClick: (GiphyAction) -> Unit = {}, onQuotedMessageClick: (Message) -> Unit = {}, onMessagesPageEndReached: (String) -> Unit = {}, onScrollToBottom: (() -> Unit) -> Unit = {}, loadingContent: @Composable () -> Unit = { DefaultMessageListLoadingIndicator(modifier) }, emptyContent: @Composable () -> Unit = { DefaultMessageListEmptyContent(modifier) }, helperContent: @Composable BoxScope.() -> Unit = {
DefaultMessagesHelperContent(
messagesState = currentState,
messagesLazyListState = messagesLazyListState,
scrollToBottom = onScrollToBottom,
)
}, loadingMoreContent: @Composable () -> Unit = { DefaultMessagesLoadingMoreIndicator() }, itemModifier: (index: Int, item: MessageListItemState) -> Modifier = { _, _ ->
Modifier
}, itemContent: @Composable (MessageListItemState) -> Unit = {
DefaultMessageContainer(
messageListItemState = it,
onLongItemClick = onLongItemClick,
onThreadClick = onThreadClick,
onReactionsClick = onReactionsClick,
onGiphyActionClick = onGiphyActionClick,
onMediaGalleryPreviewResult = onMediaGalleryPreviewResult,
onQuotedMessageClick = onQuotedMessageClick,
)
})
Clean representation of the MessageList that is decoupled from ViewModels. This components allows users to connect the UI to their own data providers, as it relies on pure state.
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fun Messages(messagesState: MessageListState, messagesLazyListState: MessagesLazyListState, threadMessagesStart: ThreadMessagesStart = ThreadMessagesStart.BOTTOM, onMessagesStartReached: () -> Unit, onLastVisibleMessageChanged: (Message) -> Unit, onScrolledToBottom: () -> Unit, onMessagesEndReached: (String) -> Unit, onScrollToBottom: (() -> Unit) -> Unit, modifier: Modifier = Modifier, contentPadding: PaddingValues = PaddingValues(vertical = 16.dp), helperContent: @Composable BoxScope.() -> Unit = {
DefaultMessagesHelperContent(
messagesState = messagesState,
messagesLazyListState = messagesLazyListState,
scrollToBottom = onScrollToBottom,
)
}, loadingMoreContent: @Composable () -> Unit = { DefaultMessagesLoadingMoreIndicator() }, itemModifier: (index: Int, item: MessageListItemState) -> Modifier = { _, _ -> Modifier }, itemContent: @Composable (MessageListItemState) -> Unit)
Builds a list of message items, based on the itemContent parameter and the state provided within messagesState. Also handles the pagination events, by propagating the event to the call site.