androidMain.tech.skot.core.components.SKFrameView.kt Maven / Gradle / Ivy

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package tech.skot.core.components

import android.widget.FrameLayout
import androidx.fragment.app.Fragment
import androidx.lifecycle.Lifecycle

class SKFrameView(
    proxy: SKFrameViewProxy,
    activity: SKActivity,
    fragment: Fragment?,
    binding: FrameLayout,
    private val screens: Set>
) : SKComponentView(proxy, activity, fragment, binding) {


    init {
        fragmentManager.apply {
            val fragmentsToRemove = fragments.filter { it is SKFragment }
            if (fragmentsToRemove.isNotEmpty()) {
                beginTransaction().let { trans ->
                    fragmentsToRemove.forEach {
                        trans.remove(it)
                    }
                    trans.commitNowAllowingStateLoss()
                }
            }
        }
    }

    fun onScreen(screen: SKScreenViewProxy<*>?) {
        if (screen != null && !screens.contains(screen)) {
            throw IllegalAccessException("The screen you try to add do this Frame is not part of the list, maybe you should use a Stack")
        }
        fragmentManager.apply {
            val trans = beginTransaction()

            if (screen != null) {

                val tag = screen.key.toString()
                val alreadyAddedFragment = findFragmentByTag(tag)


                fragments.forEach {
                    if (it.tag != tag && !it.isHidden) {
                        trans.hide(it)
                        trans.setMaxLifecycle(it, Lifecycle.State.STARTED)
                    }
                }

                if (alreadyAddedFragment != null) {
                    trans.setMaxLifecycle(alreadyAddedFragment, Lifecycle.State.RESUMED)
                    trans.show(alreadyAddedFragment)
                } else {
                    screen.createFragment().let { frag ->
                        trans.add(binding.id, frag, tag)
                    }

                }

            } else {
                fragments.forEach {
                    trans.hide(it)
                }

            }
            trans.commit()

        }
    }


}