flutter_pdfview_platform_interface #

The common platform interface for the flutter_pdfview plugin.

This package declares the interface that platform-specific implementations of flutter_pdfview implement. App authors should depend on flutter_pdfview instead — this package on its own renders nothing.

What is in here #

Implementing a platform #

Extend FlutterPdfViewPlatform — do not implement it. New members are added as non-breaking changes with a default implementation, which only works for subclasses:

class FlutterPdfViewWeb extends FlutterPdfViewPlatform {
  static void registerWith(Registrar registrar) {
    FlutterPdfViewPlatform.instance = FlutterPdfViewWeb();
  }

  @override
  Widget buildView({...}) => ...;
}

PdfColorMode.system is resolved to light or dark by the app-facing package before it reaches an implementation, so implementations never observe system.

Breaking changes #

Adding a new method with a default implementation, or a new optional parameter, is non-breaking. Removing or renaming anything, or adding a required parameter, is breaking and needs a major version bump.