Introduce MvRx in the application + start managing UI

matrix-sdk-android-rx/src/androidTest/java/im/vector/matrix/rx/ExampleInstrumentedTest.java

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+package im.vector.matrix.rx;
+
+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("im.vector.matrix.rx.test", appContext.getPackageName());
+    }
+}

matrix-sdk-android-rx/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="im.vector.matrix.rx" />

matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/LiveDataObservable.kt

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+package im.vector.matrix.rx
+
+import android.arch.lifecycle.LiveData
+import android.arch.lifecycle.Observer
+import io.reactivex.Observable
+import io.reactivex.android.MainThreadDisposable
+
+private class LiveDataObservable<T>(
+        private val liveData: LiveData<T>,
+        private val valueIfNull: T? = null
+) : Observable<T>() {
+
+    override fun subscribeActual(observer: io.reactivex.Observer<in T>) {
+        val relay = RemoveObserverInMainThread(observer)
+        observer.onSubscribe(relay)
+        liveData.observeForever(relay)
+    }
+
+    private inner class RemoveObserverInMainThread(private val observer: io.reactivex.Observer<in T>)
+        : MainThreadDisposable(), Observer<T> {
+
+        override fun onChanged(t: T?) {
+            if (!isDisposed) {
+                if (t == null) {
+                    if (valueIfNull != null) {
+                        observer.onNext(valueIfNull)
+                    } else {
+                        observer.onError(NullPointerException(
+                                "convert liveData value t to RxJava onNext(t), t cannot be null"))
+                    }
+                } else {
+                    observer.onNext(t)
+                }
+            }
+        }
+
+        override fun onDispose() {
+            liveData.removeObserver(this)
+        }
+    }
+}
+
+fun <T> LiveData<T>.asObservable(): Observable<T> {
+    return LiveDataObservable(this)
+}

matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxSession.kt

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+package im.vector.matrix.rx
+
+import im.vector.matrix.android.api.session.Session
+import im.vector.matrix.android.api.session.room.model.RoomSummary
+import io.reactivex.Observable
+
+class RxSession(private val session: Session) {
+
+    fun liveRoomSummaries(): Observable<List<RoomSummary>> {
+        return session.liveRoomSummaries().asObservable()
+    }
+
+}
+
+fun Session.rx(): RxSession {
+    return RxSession(this)
+}

matrix-sdk-android-rx/src/main/res/values/strings.xml

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+<resources>
+    <string name="app_name">matrix-sdk-android-rx</string>
+</resources>

matrix-sdk-android-rx/src/test/java/im/vector/matrix/rx/ExampleUnitTest.java

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+package im.vector.matrix.rx;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}