Initial

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild

abstractMvp/.gitignore

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+/build

abstractMvp/build.gradle

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+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+
+android {
+    compileSdkVersion 28
+
+
+
+    defaultConfig {
+        minSdkVersion 15
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+
+repositories {
+    mavenCentral()
+}

abstractMvp/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

abstractMvp/src/androidTest/java/robertapikyan/com/abstractmvp/ExampleInstrumentedTest.java

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+package robertapikyan.com.abstractmvp;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("robertapikyan.com.abstractmvp.test", appContext.getPackageName());
+    }
+}

abstractMvp/src/main/AndroidManifest.xml

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+<manifest package="robertapikyan.com.abstractmvp" />

abstractMvp/src/main/java/robertapikyan/com/abstractmvp/presentation/Mvp.kt

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+package com.robertapikyan.abstractmvp.presentation
+
+import com.robertapikyan.abstractmvp.presentation.presenter.IPresenterHolder
+import com.robertapikyan.abstractmvp.presentation.presenter.IPresenterLifecycleHandler
+import com.robertapikyan.abstractmvp.presentation.presenter.Presenter
+import com.robertapikyan.abstractmvp.presentation.presenter.PresenterProxy
+import com.robertapikyan.abstractmvp.presentation.view.IView
+import com.robertapikyan.abstractmvp.presentation.view.IViewActionDispatcher
+import com.robertapikyan.abstractmvp.presentation.view.IViewActionObserver
+import com.robertapikyan.abstractmvp.presentation.view.ViewHolder
+
+class Mvp {
+
+    /**
+     * One of the important interface for MVP library.
+     * This is the starting point for MVP implementation
+     * Inherit from this Factory, and provide your custom implementations
+     * for IViewActionDispatcher, IViewActionObserver, IPresenterHolder, IPresenterLifecycleHandler ...
+     */
+    interface Factory<V : IView, P : Presenter<V>> {
+        fun getView(): V
+        fun getViewActionDispatcher(): IViewActionDispatcher<V>
+        fun getViewActionObserver(): IViewActionObserver<V>
+        fun getPresenter(): P
+        fun getPresenterHolder(): IPresenterHolder<V, P>
+        fun getPresenterLifecycleHandler(): IPresenterLifecycleHandler
+    }
+
+    companion object {
+        /**
+         * Use this method in order to receive your presenter instance
+         * based on you Factory implementation
+         */
+        fun <V : IView, P : Presenter<V>> from(factory: Factory<V, P>): P {
+            // View
+            val view = factory.getView()
+            val viewHolder = ViewHolder<V>()
+
+            // Presenter
+            val presenter by lazy { factory.getPresenter() }
+            val presenterHolder = factory.getPresenterHolder()
+            val presenterProxy by lazy { PresenterProxy(presenterHolder.get()) }
+            val presenterLifecycleHandler by lazy { factory.getPresenterLifecycleHandler() }
+
+            // Action dispatcher and observable
+            val viewActionObserver = factory.getViewActionObserver()
+            val viewActionDispatcher by lazy { factory.getViewActionDispatcher() }
+
+            // holds state whatever presenter is created or restored
+            val isPresenterCreated = !presenterHolder.hasPresenter()
+
+            // if holder is empty, we create new presenter instance
+            if (!presenterHolder.hasPresenter()) {
+                presenterHolder.put(presenter)
+            }
+
+            // set the viewHolder instance,
+            // in order to clear it when view scope is going to be destroyed
+            presenterProxy.viewHolder = viewHolder
+
+            viewHolder.putView(view)
+
+            // pass the presenterProxy instance as PresenterLifecycle
+            presenterLifecycleHandler.onCreate(presenterProxy)
+
+            viewActionObserver.onCreate(viewHolder)
+
+            // now if presenter is created we set viewActionObserver instance to viewActionDispatcher,
+            // pass the viewActionDispatcher instance to presenter,
+            // and call presenter.onCreate(). At this point presenter is ready
+            if (isPresenterCreated) {
+                viewActionDispatcher.setViewActionObserver(viewHolder, viewActionObserver)
+                presenter._viewActionDispatcher = viewActionDispatcher
+                presenter.onCreate()
+            } else {
+                // if presenter instance is restored, we just set viewActionObserver to viewActionDispatcher,
+                // and call presenter.onRestore()
+                presenterHolder.get()
+                        ._viewActionDispatcher
+                        .setViewActionObserver(viewHolder, viewActionObserver)
+                presenterHolder.get().onRestore()
+            }
+
+            // return the presenter instance
+            return presenterHolder.get()
+        }
+    }
+}

abstractMvp/src/main/java/robertapikyan/com/abstractmvp/presentation/presenter/IPresenterHolder.kt

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+package com.robertapikyan.abstractmvp.presentation.presenter
+
+import com.robertapikyan.abstractmvp.presentation.view.IView
+
+/**
+ * IPresenterHolder represent's holder container for Presenter instance,
+ * It receive's presenter instance via put() method, and provide's the same instance
+ * via get() method
+ * The main point of this class is to inherit from android lifecycle persistence objects such as
+ * Loaders and ViewModels and every time provide the same presenter instance
+ */
+interface IPresenterHolder<V : IView, P : Presenter<V>> {
+    fun hasPresenter(): Boolean
+    fun put(presenter: P)
+    fun get(): P
+}

abstractMvp/src/main/java/robertapikyan/com/abstractmvp/presentation/presenter/IPresenterLifecycle.kt

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+package com.robertapikyan.abstractmvp.presentation.presenter
+
+/**
+ * IPresenterLifecycle is Presenter lifecycle representation
+ */
+interface IPresenterLifecycle {
+
+    /**
+     * onViewAttach, will be called with activity setViewActionObserver
+     */
+    fun onViewAttach()
+
+    /**
+     * onViewStop, will be called with activity onStart
+     */
+    fun onViewStart()
+
+    /**
+     * onViewStop, will be called with activity onStop
+     */
+    fun onViewStop()
+
+    /**
+     * onViewDetach, will be called with activity onDestroy
+     */
+    fun onViewDetach()
+}

abstractMvp/src/main/java/robertapikyan/com/abstractmvp/presentation/presenter/IPresenterLifecycleHandler.kt

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+package com.robertapikyan.abstractmvp.presentation.presenter
+
+/**
+ * IPresenterLifecycleHandler is responsible for presenter lifecycle handling
+ * Receive presenter lifecycle instance via setViewActionObserver method,
+ * All lifecycle methods will be called by PresenterLifecycleHandler except Lifecycle::setViewActionObserver method,
+ * this method will be called by MVP framework
+ */
+interface IPresenterLifecycleHandler {
+    fun onCreate(presenterLifecycle: IPresenterLifecycle)
+}