Merge pull request #1 from eadm/presentation-1.1

presentation/base/1.1.1

Author: eadm

dependencies.gradle

@@ -6,7 +6,7 @@ ext.versions = [
         viewNavigationName   : '1.0.2',
         viewInjectionName    : '1.0.0',
 
-        presentationBaseName : '1.0.0',
+        presentationBaseName : '1.1.1',
 
         minSdk               : 16,
         targetSdk            : 28,

presentation-base/src/main/java/ru/nobird/android/presentation/base/DefaultPresenterViewContainer.kt

@@ -0,0 +1,27 @@
+package ru.nobird.android.presentation.base
+
+import androidx.annotation.CallSuper
+
+class DefaultPresenterViewContainer<V> : PresenterViewContainer<V> {
+    @Volatile
+    override var view: V? = null
+        private set
+
+    @CallSuper
+    override fun attachView(view: V) {
+        val previousView = this.view
+
+        check(previousView == null) { "Previous view is not detached! previousView = $previousView" }
+
+        this.view = view
+    }
+
+    @CallSuper
+    override fun detachView(view: V) {
+        val previousView = this.view
+
+        check(previousView === view) { "Unexpected view! previousView = $previousView, getView to unbind = $view" }
+
+        this.view = null
+    }
+}

presentation-base/src/main/java/ru/nobird/android/presentation/base/DisposableViewModel.kt

@@ -0,0 +1,37 @@
+package ru.nobird.android.presentation.base
+
+import android.os.Bundle
+import androidx.annotation.CallSuper
+import androidx.lifecycle.ViewModel
+import io.reactivex.disposables.CompositeDisposable
+
+abstract class DisposableViewModel : ViewModel() {
+    protected val compositeDisposable = CompositeDisposable()
+
+    protected open val nestedDisposables: List<DisposableViewModel> = emptyList()
+
+    @CallSuper
+    override fun onCleared() {
+        nestedDisposables.forEach { it.onCleared() }
+        compositeDisposable.dispose()
+    }
+
+    @CallSuper
+    open fun onSaveInstanceState(outState: Bundle) {
+        nestedDisposables.forEachIndexed { index, nestedPresenter ->
+            val bundle = Bundle()
+            nestedPresenter.onSaveInstanceState(bundle)
+
+            outState.putBundle("${nestedPresenter::class.java.canonicalName}:$index", bundle)
+        }
+    }
+
+    @CallSuper
+    open fun onRestoreInstanceState(savedInstanceState: Bundle) {
+        nestedDisposables.forEachIndexed { index, nestedPresenter ->
+            savedInstanceState
+                .getBundle("${nestedPresenter::class.java.canonicalName}:$index")
+                ?.let(nestedPresenter::onRestoreInstanceState)
+        }
+    }
+}

presentation-base/src/main/java/ru/nobird/android/presentation/base/PresenterBase.kt

@@ -1,42 +1,25 @@
 package ru.nobird.android.presentation.base
 
-import android.os.Bundle
 import androidx.annotation.CallSuper
-import androidx.lifecycle.ViewModel
-import io.reactivex.disposables.CompositeDisposable
+import ru.nobird.android.presentation.base.delegate.PresenterDelegate
 
-abstract class PresenterBase<V> : ViewModel() {
-    protected val compositeDisposable = CompositeDisposable()
+abstract class PresenterBase<V>(
+    private val presenterViewContainer: PresenterViewContainer<V> = DefaultPresenterViewContainer()
+) : DisposableViewModel(), PresenterViewContainer<V> by presenterViewContainer {
+    protected open val delegates: List<PresenterDelegate<in V>> = emptyList()
 
-    @Volatile
-    var view: V? = null
-        private set
+    override val nestedDisposables: List<DisposableViewModel>
+        get() = delegates
 
     @CallSuper
-    open fun attachView(view: V) {
-        val previousView = this.view
-
-        check(previousView == null) { "Previous view is not detached! previousView = $previousView" }
-
-        this.view = view
+    override fun attachView(view: V) {
+        presenterViewContainer.attachView(view)
+        delegates.forEach { it.attachView(view) }
     }
 
     @CallSuper
-    open fun detachView(view: V) {
-        val previousView = this.view
-
-        if (previousView === view) {
-            this.view = null
-        } else {
-            throw IllegalStateException("Unexpected view! previousView = $previousView, getView to unbind = $view")
-        }
+    override fun detachView(view: V) {
+        delegates.forEach { it.detachView(view) }
+        presenterViewContainer.detachView(view)
     }
-
-    @CallSuper
-    override fun onCleared() {
-        compositeDisposable.dispose()
-    }
-
-    open fun onSaveInstanceState(outState: Bundle) {}
-    open fun onRestoreInstanceState(savedInstanceState: Bundle) {}
 }

presentation-base/src/main/java/ru/nobird/android/presentation/base/PresenterContract.kt

@@ -0,0 +1,6 @@
+package ru.nobird.android.presentation.base
+
+interface PresenterContract<V> {
+    fun attachView(view: V)
+    fun detachView(view: V)
+}

presentation-base/src/main/java/ru/nobird/android/presentation/base/PresenterViewContainer.kt

@@ -0,0 +1,3 @@
+package ru.nobird.android.presentation.base
+
+interface PresenterViewContainer<V> : ViewContainer<V>, PresenterContract<V>

presentation-base/src/main/java/ru/nobird/android/presentation/base/ViewContainer.kt

@@ -0,0 +1,5 @@
+package ru.nobird.android.presentation.base
+
+interface ViewContainer<V> {
+    val view: V?
+}

presentation-base/src/main/java/ru/nobird/android/presentation/base/delegate/PresenterDelegate.kt

@@ -0,0 +1,9 @@
+package ru.nobird.android.presentation.base.delegate
+
+import ru.nobird.android.presentation.base.DisposableViewModel
+import ru.nobird.android.presentation.base.PresenterContract
+
+abstract class PresenterDelegate<V> : PresenterContract<V>, DisposableViewModel() {
+    override fun attachView(view: V) {}
+    override fun detachView(view: V) {}
+}