Working with Frames (legacy)

A WebFrame object encapsulates the data displayed in a WebFrameView object. There is one WebFrame object per frame displayed in a WebView. An entire webpage is represented by a hierarchy of WebFrame objects in which the root object is called the main frame.

WebDataSource encapsulates the web content to be displayed in a web frame view. A WebDataSource object has a representation object, conforming to the WebDocumentRepresentation protocol, that holds the data in an appropriate format depending on the MIME type. You can extend WebKit to support new MIME types by implementing your own view and representation classes, and specifying the mapping between them using the registerClass(_:representationClass:forMIMEType:) WebView class method.

WebFrameView objects and their subviews display the web content contained in a frame. You never create instances of WebFrameView directly—WebView objects create and manage a hierarchy of WebFrameView objects, one for each frame. WebFrameView objects use a scroll view whose document view conforms to the WebDocumentView protocol.