1 files changed, 148 insertions, 0 deletions
diff --git a/ui/src/main/java/com/wireguard/android/databinding/BindingAdapters.java b/ui/src/main/java/com/wireguard/android/databinding/BindingAdapters.java
new file mode 100644
index 00000000..ee216d4c
--- /dev/null
+++ b/ui/src/main/java/com/wireguard/android/databinding/BindingAdapters.java
@@ -0,0 +1,148 @@
+/*
+ * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.wireguard.android.databinding;
+
+import androidx.databinding.BindingAdapter;
+import androidx.databinding.DataBindingUtil;
+import androidx.databinding.ObservableList;
+import androidx.databinding.ViewDataBinding;
+import androidx.databinding.adapters.ListenerUtil;
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+import android.text.InputFilter;
+import android.view.LayoutInflater;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import com.wireguard.android.BR;
+import com.wireguard.android.R;
+import com.wireguard.android.databinding.ObservableKeyedRecyclerViewAdapter.RowConfigurationHandler;
+import com.wireguard.android.util.ObservableKeyedList;
+import com.wireguard.android.widget.ToggleSwitch;
+import com.wireguard.android.widget.ToggleSwitch.OnBeforeCheckedChangeListener;
+import com.wireguard.config.Attribute;
+import com.wireguard.config.InetNetwork;
+import com.wireguard.util.Keyed;
+
+import java9.util.Optional;
+
+/**
+ * Static methods for use by generated code in the Android data binding library.
+ */
+
+@SuppressWarnings("unused")
+public final class BindingAdapters {
+    private BindingAdapters() {
+        // Prevent instantiation.
+    }
+
+    @BindingAdapter("checked")
+    public static void setChecked(final ToggleSwitch view, final boolean checked) {
+        view.setCheckedInternal(checked);
+    }
+
+    @BindingAdapter("filter")
+    public static void setFilter(final TextView view, final InputFilter filter) {
+        view.setFilters(new InputFilter[]{filter});
+    }
+
+    @BindingAdapter({"items", "layout"})
+    public static <E>
+    void setItems(final LinearLayout view,
+                  @Nullable final ObservableList<E> oldList, final int oldLayoutId,
+                  @Nullable final ObservableList<E> newList, final int newLayoutId) {
+        if (oldList == newList && oldLayoutId == newLayoutId)
+            return;
+        ItemChangeListener<E> listener = ListenerUtil.getListener(view, R.id.item_change_listener);
+        // If the layout changes, any existing listener must be replaced.
+        if (listener != null && oldList != null && oldLayoutId != newLayoutId) {
+            listener.setList(null);
+            listener = null;
+            // Stop tracking the old listener.
+            ListenerUtil.trackListener(view, null, R.id.item_change_listener);
+        }
+        // Avoid adding a listener when there is no new list or layout.
+        if (newList == null || newLayoutId == 0)
+            return;
+        if (listener == null) {
+            listener = new ItemChangeListener<>(view, newLayoutId);
+            ListenerUtil.trackListener(view, listener, R.id.item_change_listener);
+        }
+        // Either the list changed, or this is an entirely new listener because the layout changed.
+        listener.setList(newList);
+    }
+
+    @BindingAdapter({"items", "layout"})
+    public static <E>
+    void setItems(final LinearLayout view,
+                  @Nullable final Iterable<E> oldList, final int oldLayoutId,
+                  @Nullable final Iterable<E> newList, final int newLayoutId) {
+        if (oldList == newList && oldLayoutId == newLayoutId)
+            return;
+        view.removeAllViews();
+        if (newList == null)
+            return;
+        final LayoutInflater layoutInflater = LayoutInflater.from(view.getContext());
+        for (final E item : newList) {
+            final ViewDataBinding binding =
+                    DataBindingUtil.inflate(layoutInflater, newLayoutId, view, false);
+            binding.setVariable(BR.collection, newList);
+            binding.setVariable(BR.item, item);
+            binding.executePendingBindings();
+            view.addView(binding.getRoot());
+        }
+    }
+
+    @BindingAdapter(requireAll = false, value = {"items", "layout", "configurationHandler"})
+    public static <K, E extends Keyed<? extends K>>
+    void setItems(final RecyclerView view,
+                  @Nullable final ObservableKeyedList<K, E> oldList, final int oldLayoutId,
+                  final RowConfigurationHandler oldRowConfigurationHandler,
+                  @Nullable final ObservableKeyedList<K, E> newList, final int newLayoutId,
+                  final RowConfigurationHandler newRowConfigurationHandler) {
+        if (view.getLayoutManager() == null)
+            view.setLayoutManager(new LinearLayoutManager(view.getContext(), RecyclerView.VERTICAL, false));
+
+        if (oldList == newList && oldLayoutId == newLayoutId)
+            return;
+        // The ListAdapter interface is not generic, so this cannot be checked.
+        @SuppressWarnings("unchecked") ObservableKeyedRecyclerViewAdapter<K, E> adapter =
+                (ObservableKeyedRecyclerViewAdapter<K, E>) view.getAdapter();
+        // If the layout changes, any existing adapter must be replaced.
+        if (adapter != null && oldList != null && oldLayoutId != newLayoutId) {
+            adapter.setList(null);
+            adapter = null;
+        }
+        // Avoid setting an adapter when there is no new list or layout.
+        if (newList == null || newLayoutId == 0)
+            return;
+        if (adapter == null) {
+            adapter = new ObservableKeyedRecyclerViewAdapter<>(view.getContext(), newLayoutId, newList);
+            view.setAdapter(adapter);
+        }
+
+        adapter.setRowConfigurationHandler(newRowConfigurationHandler);
+        // Either the list changed, or this is an entirely new listener because the layout changed.
+        adapter.setList(newList);
+    }
+
+    @BindingAdapter("onBeforeCheckedChanged")
+    public static void setOnBeforeCheckedChanged(final ToggleSwitch view,
+                                                 final OnBeforeCheckedChangeListener listener) {
+        view.setOnBeforeCheckedChangeListener(listener);
+    }
+
+    @BindingAdapter("android:text")
+    public static void setText(final TextView view, final Optional<?> text) {
+        view.setText(text.map(Object::toString).orElse(""));
+    }
+
+    @BindingAdapter("android:text")
+    public static void setText(final TextView view, @Nullable final Iterable<InetNetwork> networks) {
+        view.setText(networks != null ? Attribute.join(networks) : "");
+    }
+}