OverlayProvider

The OverlayProvider is the top level Stream Chat for React Native component and wraps all other components provided by the SDK. The OverlayProvider allows users to interact with messages on long press above the underlying views, use the full screen image viewer, and use the AttachmentPicker as a keyboard-esk view.

Basic Usage

The OverlayProvider should wrap all other Stream Chat for React Native components and in most cases the majority of your application.

note

For detailed implementation instructions of the OverlayProvider with navigation please refer to the Stream Chat with Navigation.

import { StreamChat } from 'stream-chat';
import { ChannelList, Chat, OverlayProvider } from 'stream-chat-react-native';

const client = StreamChat.getInstance('api_key');

export const App = () => (
  <OverlayProvider>
    <Chat client={client}>
      <ChannelList />
    </Chat>
  </OverlayProvider>
);

Context Providers

OverlayProvider contains providers for the AttachmentPickerContext, ImageGalleryContext, MessageOverlayContext, OverlayContext, ThemeContext, and TranslationContext. These can be accessed using the corresponding hooks.

Context	Hook
AttachmentPickerContext	useAttachmentPickerContext
ImageGalleryContext	useImageGalleryContext
MessageOverlayContext	useMessageOverlayContext
OverlayContext	useOverlayContext
ThemeContext	useTheme
TranslationContext	useTranslationContext

UI Customizations

You can override any of the components rendered in overlay using props on OverlayProvider or Channel. Custom components provided to Channel are hoisted to the overlay for use in displaying messages within the OverlayProvider. Customizing these components requires no interaction with the OverlayProvider.

Components only rendered within the overlay can be overridden and modified via props on the OverlayProvider. Removing the OverlayReactionList can be done easily by replacing it with a function that returns null.

<OverlayProvider OverlayReactionList={() => null}>

Message Overlay

Image Picker

Image Gallery

Props

The OverlayProvider can be used with no props provided but there are a plethora of props for customizing the components in the overlay.

attachmentPickerBottomSheetHandleHeight

Height of the image picker bottom sheet handle.

Type	Default
number	20

attachmentPickerBottomSheetHeight

Height of the image picker bottom sheet when closed.

Type	Default
number	308

attachmentPickerErrorButtonText

Text for the button within AttachmentPickerError that opens the apps OS level settings.

Type	Default
string	"Allow access to your Gallery"

attachmentPickerErrorText

Error text for AttachmentPickerError.

Type	Default
string	"Please enable access to your photos and videos so you can share them."

attachmentSelectionBarHeight

Height of the attachment selection bar displayed above the image picker.

Type	Default
number	52

bottomInset

Height of items located below the MessageInput when present. This inset determines the underlying shift to the MessageList when it is opened.

tip

This can also be set via the setBottomInset function provided by the useAttachmentPickerContext hook.

Type	Default
number	0

giphyVersion

The Giphy version to render when viewing a Giphy in the Image Gallery. Check the keys of the Image Object for possible values.

Type	Default
string	'fixed_height'

i18nInstance

Instance of Streami18n class used for internationalization. Please read more in the translations docs for details on creation and customization.

Type
Streami18n

imageGalleryCustomComponents

Image gallery components. Each key in the object is spread as props onto its respective component. Each component has a number of sub-components it can receive in this manor.

• footer -> ImageGalleryFooter
• grid -> ImageGrid
• gridHandle -> ImageGridHandle
• header -> ImageGalleryHeader

Type
object

imageGalleryGridHandleHeight

Height of the image gallery grid bottom sheet handle.

Type	Default
number	40

imageGalleryGridSnapPoints

SnapPoints for the image gallery grid bottom sheet.

Type	Default
array	[0, (screenHeight * 9) / 10]

messageTextNumberOfLines

Number of lines for the message text in the Message Overlay.

Type	Default
number	5

numberOfAttachmentImagesToLoadPerCall

Number of images to load per call to CameraRoll.getPhotos.

Type	Default
number	60

numberOfAttachmentPickerImageColumns

Number of columns to render within the image picker.

Type	Default
number	3

numberOfImageGalleryGridColumns

Number of columns to render within the image gallery grid.

Type	Default
number	3

topInset

Distance from the top of the screen the attachment picker should open to when expanded. This is often set to the header height.

tip

This can also be set via the setTopInset function provided by the useAttachmentPickerContext hook.

Type	Default
number	0

value

Partially overrides the value provided to the OverlayContext. This prop can be used to set the theme via the style key.

const theme = {
  messageSimple: {
    file: {
      container: {
        backgroundColor: 'red',
      },
    },
  },
};

<OverlayProvider value={{ style: theme }}>...</OverlayProvider>;

Type
object

AttachmentPickerBottomSheetHandle

Bottom sheet handle component for image picker.

Type	Default
component	AttachmentPickerBottomSheetHandle

AttachmentPickerError

Error component displayed when the app doesn't have permissions to access photos on the device.

Type	Default
component	AttachmentPickerError

AttachmentPickerErrorImage

Image component within AttachmentPickerError.

Type	Default
component	AttachmentPickerErrorImage

CameraSelectorIcon

Camera selector component displayed in the attachment selector bar.

Type	Default
component	CameraSelectorIcon

FileSelectorIcon

File selector component displayed in the attachment selector bar.

Type	Default
component	FileSelectorIcon

ImageOverlaySelectedComponent

Indicator component used to designate an image as selected in the image picker.

Type	Default
component	ImageOverlaySelectedComponent

ImageSelectorIcon

Image selector component displayed in the attachment selector bar.

Type	Default
component	ImageSelectorIcon

MessageActionList

Component for rendering a message action list within the message overlay.

Type	Default
Component	[MessageActionList

MessageActionListItem

Component for rendering message action list items within a message action list.

Type	Default
Component	MessageActionListItem

OverlayReactionList

Reaction selector component displayed within the message overlay when user long presses a message.

Type	Default
component	OverlayReactionList

OverlayReactions

List of reactions component within the message overlay.

Type	Default
component	OverlayReactions

OverlayReactionsAvatar

Component for rendering a avatar in the message reaction overlay.

Type	Default
component	OverlayReactionsAvatar