| package com.google.r4a.examples.explorerapp.common.adapters |
| |
| import android.os.Bundle |
| import android.support.v4.app.Fragment |
| import android.view.LayoutInflater |
| import android.view.View |
| import android.view.ViewGroup |
| import android.widget.LinearLayout |
| import androidx.navigation.findNavController |
| import com.google.r4a.* |
| |
| /** |
| * A fragment that uses a Component as it's UI. |
| */ |
| abstract class ComposeFragment : Fragment() { |
| var reference: CompositionReference? = null |
| abstract fun compose() |
| |
| override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? { |
| // NOTE(lmr): Should we use FrameLayout or LinearLayout by default? |
| val root = LinearLayout(inflater.context).apply { |
| orientation = LinearLayout.VERTICAL |
| } |
| // TODO(lmr): right now we use container.findAmbientReference() as a way to allow ComposeFragment work |
| // seamlessly with FragmentComponent. It works but feels a little bit wrong. Consider better options. |
| val reference = reference ?: container?.findAmbientReference() |
| R4a.composeInto(root, reference) { |
| with(composer) { |
| provideAmbient(Ambients.Fragment, this@ComposeFragment) { |
| group(0) { |
| compose() |
| } |
| } |
| } |
| } |
| return root |
| } |
| } |
