Artem Hluhovskyi hluhovskyi

## medium_17.kt
class OwnFragment : Fragment() {
    val errorMessage by string(R.string.error_message)
}

## medium_16.kt
fun View.string(@StringRes id: Int): ReadOnlyProperty<View, String>
    = StringDelegate(contextProvider, id)

fun Activity.string(@StringRes id: Int): ReadOnlyProperty<Activity, String>
    = StringDelegate(contextProvider, id)

fun Fragment.string(@StringRes id: Int): ReadOnlyProperty<Fragment, String>
    = StringDelegate(contextProvider, id)

private class StringDelegate : ReadOnlyProperty<Any, Stirng>

## medium_15.kt
class StringDelegate : ReadOnlyPropery<Any, String> {

    private val stringRes: Int
    private val contextProvider: () -> Context
    private var string: String? = null

    constructor(contextProvider: () -> Context, @StringRes stringRes: Int) {
        this.contextProvider = contextProvider
        this.stringRes = stringRes
    }

## medium_14.kt
val View.contextProvider: () -> Context
    get() = this::getContext

val Activity.contextProvider: () -> Context
    get() = { this }

val Fragment.contextProvider: () -> Context
    get() = this::getContext


## medium_13.kt
class OwnFragment : Fragment(), ContextProvider {

    val errorMessage by string(R.string.error_message)

    overrider fun provideContext() = context
}

## medium_12.kt
fun ContextProvider.string(@StringRes stringRes: Int): ReadOnlyProperty<ContextProvider, Stirng>
    = StringDelegate(stringRes)

## medium_11.kt
class StringDelegate : ReadOnlyPropery<ContextProvider, String> {

    private val stringRes: Int
    private var string: String? = null

    constructor(@StringRes stringRes: Int) {
        this.stringRes = stringRes
    }

    override fun getValue(ref: ContextProvider, property: KProperty<*>): String {

## medium_10.kt
interface ContextProvdier {
    fun provideContext(): Context
}

class OwnActivity : AppCompatActivity(), ContextProvider {
    fun provideContext() = this
}

class OwnFragment : Fragment(), ContextProvider {
    fun provideContext() = context

## medium_9.kt
private val errorMessage: TextView by view(R.id.errorMessage)

## medium_8.kt
fun <T : View> Activity.view(IdRes id: Int): ReadOnlyProperty<Activity, T>
    = ViewFinderDelegate(id)