# BaseChatViewController

The base UIViewController you must subclass

Needs an input bar:
```swift
public func createChatInputView() -> UIView {
    assert(false, "Override in subclass")
    return UIView()
}

```

Needs a [Data source]:

```swift
public final func setChatDataSource(dataSource: ChatDataSourceProtocol?, triggeringUpdateType updateType: UpdateType?) {
    ...
}
```

Needs to know how to create [[Presenters]] for your `ChatItem`s:
```swift
public func createPresenterFactory() -> ChatItemPresenterFactoryProtocol {
    // Default implementation
    return ChatItemPresenterFactory(presenterBuildersByType: self.createPresenterBuilders())
}
```

If you stick to the default implementation then you must override `createPresenterBuilders`

```swift
public typealias ChatItemType = String
public func createPresenterBuilders() -> [ChatItemType: [ChatItemPresenterBuilderProtocol]] {
    assert(false, "Override in subclass")
    return [ChatItemType: [ChatItemPresenterBuilderProtocol]]()
}
```