issue_5680_3.1: Create class TimeoutFragment2

package foundation.e.apps.utils.parentFragment

import androidx.annotation.LayoutRes

import androidx.fragment.app.Fragment

import androidx.lifecycle.MutableLiveData

import androidx.lifecycle.ViewModelProvider

import androidx.lifecycle.lifecycleScope

import foundation.e.apps.login.AuthObject

import foundation.e.apps.login.LoginViewModel

import kotlinx.coroutines.launch

/**

 * Parent class of all fragments.

 *

 * Mostly contains UI related code regarding dialogs to display.

 * Does also provide some interaction with [LoginViewModel].

 *

 * https://gitlab.e.foundation/e/backlog/-/issues/5680

 */

abstract class TimeoutFragment2(@LayoutRes layoutId: Int) : Fragment(layoutId) {

    val loginViewModel: LoginViewModel by lazy {

        ViewModelProvider(requireActivity())[LoginViewModel::class.java]

    }

    /**

     * Fragments observe this list to load data.

     * Fragments should not observe [loginViewModel]'s authObjects.

     */

    val authObjects: MutableLiveData<List<AuthObject>?> = MutableLiveData()

    abstract fun loadData(authObjectList: List<AuthObject>)

    abstract fun showLoadingUI()

    abstract fun stopLoadingUI()

    /**

     * Crucial to call this, other wise fragments will never receive any authentications.

     */

    fun setupListening() {

        loginViewModel.authObjects.observe(viewLifecycleOwner) {

            authObjects.postValue(it)

        }

    }

    /**

     * Call this to repopulate authObjects with old data, this can be used to refresh data

     * from inside the observer on [authObjects].

     */

    fun repostAuthObjects() {

        authObjects.postValue(loginViewModel.authObjects.value)

    }

}

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