1 files changed, 67 insertions, 0 deletions
diff --git a/mobile/android/android-components/components/feature/session/README.md b/mobile/android/android-components/components/feature/session/README.md
new file mode 100644
index 0000000000..785420bfa5
--- /dev/null
+++ b/mobile/android/android-components/components/feature/session/README.md
@@ -0,0 +1,67 @@
+# [Android Components](../../../README.md) > Feature > Session
+
+A component that connects an (concept) engine implementation with the browser session module.
+A HistoryTrackingDelegate implementation is also provided, which allows tying together
+an engine implementation with a storage module.
+
+## Usage
+
+### Setting up the dependency
+
+Use Gradle to download the library from [maven.mozilla.org](https://maven.mozilla.org/) ([Setup repository](../../../README.md#maven-repository)):
+
+```Groovy
+implementation "org.mozilla.components:feature-session:{latest-version}"
+```
+
+### SwipeRefreshFeature
+Sample code can be found in [Sample Browser app](https://github.com/mozilla-mobile/android-components/tree/main/samples/browser).
+
+Class to add pull to refresh functionality to browsers. You should pass it a reference to a [`SwipeRefreshLayout`](https://developer.android.com/reference/kotlin/androidx/swiperefreshlayout/widget/SwipeRefreshLayout.html) and the SessionManager.
+
+Your layout should have a `SwipeRefreshLayout` with an `EngineView` as its only child view.
+
+```xml
+<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+    android:id="@+id/swipeRefreshLayout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+    <mozilla.components.concept.engine.EngineView
+        android:id="@+id/engineView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+```
+
+In your fragment code, use `SwipeRefreshFeature` to connect the `SwipeRefreshLayout` with your `SessionManager` and `ReloadUrlUseCase`.
+
+```kotlin
+    val feature = BrowserSwipeRefresh(sessionManager, sessionUseCases.reload, swipeRefreshLayout)
+    lifecycle.addObserver(feature)
+```
+
+`SwipeRefreshFeature` provides its own [`SwipeRefreshLayout.OnChildScrollUpCallback`](https://developer.android.com/reference/kotlin/androidx/swiperefreshlayout/widget/SwipeRefreshLayout.OnChildScrollUpCallback.html) and [`SwipeRefreshLayout.OnRefreshListener`](https://developer.android.com/reference/kotlin/androidx/swiperefreshlayout/widget/SwipeRefreshLayout.OnRefreshListener.html) implementations that you should not override.
+
+### ThumbnailsFeature
+
+Feature implementation for automatically taking thumbnails of sites. The feature will take a screenshot when the page finishes loading, and will add it to the `Session.thumbnail` property.
+
+```kotlin
+    val feature = ThumbnailsFeature(context, engineView, sessionManager)
+    lifecycle.addObserver(feature)
+```
+
+If the OS is under low memory conditions, the screenshot will be not taken. Ideally, this should be used in conjunction with [SessionManager.onLowMemory](https://github.com/mozilla-mobile/android-components/blob/024e3de456e3b46e9bf6718db9500ecc52da3d29/components/browser/session/src/main/java/mozilla/components/browser/session/SessionManager.kt#L472) to allow free up some `Session.thumbnail` from memory.
+
+   ```kotlin
+ // Wherever you implement ComponentCallbacks2
+    override fun onTrimMemory(level: Int) {
+        sessionManager.onLowMemory()
+    }
+```
+
+## License
+
+    This Source Code Form is subject to the terms of the Mozilla Public
+    License, v. 2.0. If a copy of the MPL was not distributed with this
+    file, You can obtain one at http://mozilla.org/MPL/2.0/