databinding: rewrite in kotlin

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2020-03-26 23:54:44 -06:00
parent 8669c01eaa
commit 48a9fd46a6
25 changed files with 533 additions and 919 deletions

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@ -1,150 +0,0 @@
/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding;
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 com.wireguard.util.NonNullForAll;
import androidx.annotation.Nullable;
import androidx.databinding.BindingAdapter;
import androidx.databinding.DataBindingUtil;
import androidx.databinding.ObservableList;
import androidx.databinding.ViewDataBinding;
import androidx.databinding.adapters.ListenerUtil;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java9.util.Optional;
/**
* Static methods for use by generated code in the Android data binding library.
*/
@SuppressWarnings("unused")
@NonNullForAll
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) : "");
}
}

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/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding
import android.text.InputFilter
import android.view.LayoutInflater
import android.widget.LinearLayout
import android.widget.TextView
import androidx.databinding.BindingAdapter
import androidx.databinding.DataBindingUtil
import androidx.databinding.ObservableList
import androidx.databinding.ViewDataBinding
import androidx.databinding.adapters.ListenerUtil
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.wireguard.android.BR
import com.wireguard.android.R
import com.wireguard.android.databinding.ObservableKeyedRecyclerViewAdapter.RowConfigurationHandler
import com.wireguard.android.widget.ToggleSwitch
import com.wireguard.android.widget.ToggleSwitch.OnBeforeCheckedChangeListener
import com.wireguard.config.Attribute
import com.wireguard.config.InetNetwork
import java9.util.Optional
/**
* Static methods for use by generated code in the Android data binding library.
*/
object BindingAdapters {
@JvmStatic
@BindingAdapter("checked")
fun setChecked(view: ToggleSwitch, checked: Boolean) {
view.setCheckedInternal(checked)
}
@JvmStatic
@BindingAdapter("filter")
fun setFilter(view: TextView, filter: InputFilter) {
view.filters = arrayOf(filter)
}
@JvmStatic
@BindingAdapter("items", "layout")
fun <E> setItems(view: LinearLayout,
oldList: ObservableList<E>?, oldLayoutId: Int,
newList: ObservableList<E>?, newLayoutId: Int) {
if (oldList === newList && oldLayoutId == newLayoutId)
return
var listener: ItemChangeListener<E>? = 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<Any?>(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 = 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)
}
@JvmStatic
@BindingAdapter("items", "layout")
fun <E> setItems(view: LinearLayout,
oldList: Iterable<E>?, oldLayoutId: Int,
newList: Iterable<E>?, newLayoutId: Int) {
if (oldList === newList && oldLayoutId == newLayoutId)
return
view.removeAllViews()
if (newList == null)
return
val layoutInflater = LayoutInflater.from(view.context)
for (item in newList) {
val binding = DataBindingUtil.inflate<ViewDataBinding>(layoutInflater, newLayoutId, view, false)
binding.setVariable(BR.collection, newList)
binding.setVariable(BR.item, item)
binding.executePendingBindings()
view.addView(binding.root)
}
}
@JvmStatic
@BindingAdapter(requireAll = false, value = ["items", "layout", "configurationHandler"])
fun <K, E : Keyed<out K>> setItems(view: RecyclerView,
oldList: ObservableKeyedArrayList<K, E>?, oldLayoutId: Int,
oldRowConfigurationHandler: RowConfigurationHandler<*, *>?,
newList: ObservableKeyedArrayList<K, E>?, newLayoutId: Int,
newRowConfigurationHandler: RowConfigurationHandler<*, *>?) {
if (view.layoutManager == null)
view.layoutManager = LinearLayoutManager(view.context, RecyclerView.VERTICAL, false)
if (oldList === newList && oldLayoutId == newLayoutId)
return
// The ListAdapter interface is not generic, so this cannot be checked.
var adapter = view.adapter as ObservableKeyedRecyclerViewAdapter<K, E>?
// 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 = ObservableKeyedRecyclerViewAdapter(view.context, newLayoutId, newList)
view.adapter = adapter
}
adapter.setRowConfigurationHandler(newRowConfigurationHandler)
// Either the list changed, or this is an entirely new listener because the layout changed.
adapter.setList(newList)
}
@JvmStatic
@BindingAdapter("onBeforeCheckedChanged")
fun setOnBeforeCheckedChanged(view: ToggleSwitch,
listener: OnBeforeCheckedChangeListener?) {
view.setOnBeforeCheckedChangeListener(listener)
}
@JvmStatic
@BindingAdapter("android:text")
fun setText(view: TextView, text: Optional<*>) {
view.text = text.map { obj: Any -> obj.toString() }.orElse("")
}
@JvmStatic
@BindingAdapter("android:text")
fun setText(view: TextView, networks: Iterable<InetNetwork?>?) {
view.text = if (networks != null) Attribute.join(networks) else ""
}
}

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/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.wireguard.android.BR;
import com.wireguard.util.NonNullForAll;
import java.lang.ref.WeakReference;
import java.util.Objects;
import androidx.annotation.Nullable;
import androidx.databinding.DataBindingUtil;
import androidx.databinding.ObservableList;
import androidx.databinding.ViewDataBinding;
/**
* Helper class for binding an ObservableList to the children of a ViewGroup.
*/
@NonNullForAll
class ItemChangeListener<T> {
private final OnListChangedCallback<T> callback = new OnListChangedCallback<>(this);
private final ViewGroup container;
private final int layoutId;
private final LayoutInflater layoutInflater;
@Nullable private ObservableList<T> list;
ItemChangeListener(final ViewGroup container, final int layoutId) {
this.container = container;
this.layoutId = layoutId;
layoutInflater = LayoutInflater.from(container.getContext());
}
private View getView(final int position, @Nullable final View convertView) {
ViewDataBinding binding = convertView != null ? DataBindingUtil.getBinding(convertView) : null;
if (binding == null) {
binding = DataBindingUtil.inflate(layoutInflater, layoutId, container, false);
}
Objects.requireNonNull(list, "Trying to get a view while list is still null");
binding.setVariable(BR.collection, list);
binding.setVariable(BR.item, list.get(position));
binding.executePendingBindings();
return binding.getRoot();
}
void setList(@Nullable final ObservableList<T> newList) {
if (list != null)
list.removeOnListChangedCallback(callback);
list = newList;
if (list != null) {
list.addOnListChangedCallback(callback);
callback.onChanged(list);
} else {
container.removeAllViews();
}
}
private static final class OnListChangedCallback<T>
extends ObservableList.OnListChangedCallback<ObservableList<T>> {
private final WeakReference<ItemChangeListener<T>> weakListener;
private OnListChangedCallback(final ItemChangeListener<T> listener) {
weakListener = new WeakReference<>(listener);
}
@Override
public void onChanged(final ObservableList<T> sender) {
final ItemChangeListener<T> listener = weakListener.get();
if (listener != null) {
// TODO: recycle views
listener.container.removeAllViews();
for (int i = 0; i < sender.size(); ++i)
listener.container.addView(listener.getView(i, null));
} else {
sender.removeOnListChangedCallback(this);
}
}
@Override
public void onItemRangeChanged(final ObservableList<T> sender, final int positionStart,
final int itemCount) {
final ItemChangeListener<T> listener = weakListener.get();
if (listener != null) {
for (int i = positionStart; i < positionStart + itemCount; ++i) {
final View child = listener.container.getChildAt(i);
listener.container.removeViewAt(i);
listener.container.addView(listener.getView(i, child));
}
} else {
sender.removeOnListChangedCallback(this);
}
}
@Override
public void onItemRangeInserted(final ObservableList<T> sender, final int positionStart,
final int itemCount) {
final ItemChangeListener<T> listener = weakListener.get();
if (listener != null) {
for (int i = positionStart; i < positionStart + itemCount; ++i)
listener.container.addView(listener.getView(i, null));
} else {
sender.removeOnListChangedCallback(this);
}
}
@Override
public void onItemRangeMoved(final ObservableList<T> sender, final int fromPosition,
final int toPosition, final int itemCount) {
final ItemChangeListener<T> listener = weakListener.get();
if (listener != null) {
final View[] views = new View[itemCount];
for (int i = 0; i < itemCount; ++i)
views[i] = listener.container.getChildAt(fromPosition + i);
listener.container.removeViews(fromPosition, itemCount);
for (int i = 0; i < itemCount; ++i)
listener.container.addView(views[i], toPosition + i);
} else {
sender.removeOnListChangedCallback(this);
}
}
@Override
public void onItemRangeRemoved(final ObservableList<T> sender, final int positionStart,
final int itemCount) {
final ItemChangeListener<T> listener = weakListener.get();
if (listener != null) {
listener.container.removeViews(positionStart, itemCount);
} else {
sender.removeOnListChangedCallback(this);
}
}
}
}

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/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.databinding.DataBindingUtil
import androidx.databinding.ObservableList
import androidx.databinding.ViewDataBinding
import com.wireguard.android.BR
import java.lang.ref.WeakReference
/**
* Helper class for binding an ObservableList to the children of a ViewGroup.
*/
internal class ItemChangeListener<T>(private val container: ViewGroup, private val layoutId: Int) {
private val callback = OnListChangedCallback(this)
private val layoutInflater: LayoutInflater = LayoutInflater.from(container.context)
private var list: ObservableList<T>? = null
private fun getView(position: Int, convertView: View?): View {
var binding = if (convertView != null) DataBindingUtil.getBinding<ViewDataBinding>(convertView) else null
if (binding == null) {
binding = DataBindingUtil.inflate(layoutInflater, layoutId, container, false)
}
require(list != null) { "Trying to get a view while list is still null" }
binding!!.setVariable(BR.collection, list)
binding.setVariable(BR.item, list!![position])
binding.executePendingBindings()
return binding.root
}
fun setList(newList: ObservableList<T>?) {
list?.removeOnListChangedCallback(callback)
list = newList
if (list != null) {
list!!.addOnListChangedCallback(callback)
callback.onChanged(list!!)
} else {
container.removeAllViews()
}
}
private class OnListChangedCallback<T> constructor(listener: ItemChangeListener<T>) : ObservableList.OnListChangedCallback<ObservableList<T>>() {
private val weakListener: WeakReference<ItemChangeListener<T>> = WeakReference(listener)
override fun onChanged(sender: ObservableList<T>) {
val listener = weakListener.get()
if (listener != null) {
// TODO: recycle views
listener.container.removeAllViews()
for (i in sender.indices)
listener.container.addView(listener.getView(i, null))
} else {
sender.removeOnListChangedCallback(this)
}
}
override fun onItemRangeChanged(sender: ObservableList<T>, positionStart: Int,
itemCount: Int) {
val listener = weakListener.get()
if (listener != null) {
for (i in positionStart until positionStart + itemCount) {
val child = listener.container.getChildAt(i)
listener.container.removeViewAt(i)
listener.container.addView(listener.getView(i, child))
}
} else {
sender.removeOnListChangedCallback(this)
}
}
override fun onItemRangeInserted(sender: ObservableList<T>, positionStart: Int,
itemCount: Int) {
val listener = weakListener.get()
if (listener != null) {
for (i in positionStart until positionStart + itemCount)
listener.container.addView(listener.getView(i, null))
} else {
sender.removeOnListChangedCallback(this)
}
}
override fun onItemRangeMoved(sender: ObservableList<T>, fromPosition: Int,
toPosition: Int, itemCount: Int) {
val listener = weakListener.get()
if (listener != null) {
val views = arrayOfNulls<View>(itemCount)
for (i in 0 until itemCount) views[i] = listener.container.getChildAt(fromPosition + i)
listener.container.removeViews(fromPosition, itemCount)
for (i in 0 until itemCount) listener.container.addView(views[i], toPosition + i)
} else {
sender.removeOnListChangedCallback(this)
}
}
override fun onItemRangeRemoved(sender: ObservableList<T>, positionStart: Int,
itemCount: Int) {
val listener = weakListener.get()
if (listener != null) {
listener.container.removeViews(positionStart, itemCount)
} else {
sender.removeOnListChangedCallback(this)
}
}
}
}

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/*
* Copyright © 2020 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding
/**
* Interface for objects that have a identifying key of the given type.
*/
interface Keyed<K> {
val key: K
}

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/*
* Copyright © 2020 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding
import androidx.databinding.ObservableArrayList
/**
* ArrayList that allows looking up elements by some key property. As the key property must always
* be retrievable, this list cannot hold `null` elements. Because this class places no
* restrictions on the order or duplication of keys, lookup by key, as well as all list modification
* operations, require O(n) time.
*/
open class ObservableKeyedArrayList<K, E : Keyed<out K>> : ObservableArrayList<E>() {
fun containsKey(key: K) = indexOfKey(key) >= 0
operator fun get(key: K): E? {
val index = indexOfKey(key)
return if (index >= 0) get(index) else null
}
open fun indexOfKey(key: K): Int {
val iterator = listIterator()
while (iterator.hasNext()) {
val index = iterator.nextIndex()
if (iterator.next()!!.key == key)
return index
}
return -1
}
}

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/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import com.wireguard.android.BR;
import com.wireguard.android.util.ObservableKeyedList;
import com.wireguard.util.Keyed;
import com.wireguard.util.NonNullForAll;
import java.lang.ref.WeakReference;
import androidx.annotation.Nullable;
import androidx.databinding.DataBindingUtil;
import androidx.databinding.ObservableList;
import androidx.databinding.ViewDataBinding;
import androidx.recyclerview.widget.RecyclerView;
import androidx.recyclerview.widget.RecyclerView.Adapter;
/**
* A generic {@code RecyclerView.Adapter} backed by a {@code ObservableKeyedList}.
*/
@NonNullForAll
public class ObservableKeyedRecyclerViewAdapter<K, E extends Keyed<? extends K>> extends Adapter<ObservableKeyedRecyclerViewAdapter.ViewHolder> {
private final OnListChangedCallback<E> callback = new OnListChangedCallback<>(this);
private final int layoutId;
private final LayoutInflater layoutInflater;
@Nullable private ObservableKeyedList<K, E> list;
@Nullable private RowConfigurationHandler rowConfigurationHandler;
ObservableKeyedRecyclerViewAdapter(final Context context, final int layoutId,
final ObservableKeyedList<K, E> list) {
this.layoutId = layoutId;
layoutInflater = LayoutInflater.from(context);
setList(list);
}
@Nullable
private E getItem(final int position) {
if (list == null || position < 0 || position >= list.size())
return null;
return list.get(position);
}
@Override
public int getItemCount() {
return list != null ? list.size() : 0;
}
@Override
public long getItemId(final int position) {
final K key = getKey(position);
return key != null ? key.hashCode() : -1;
}
@Nullable
private K getKey(final int position) {
final E item = getItem(position);
return item != null ? item.getKey() : null;
}
@SuppressWarnings("unchecked")
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.binding.setVariable(BR.collection, list);
holder.binding.setVariable(BR.key, getKey(position));
holder.binding.setVariable(BR.item, getItem(position));
holder.binding.executePendingBindings();
if (rowConfigurationHandler != null) {
final E item = getItem(position);
if (item != null) {
rowConfigurationHandler.onConfigureRow(holder.binding, item, position);
}
}
}
@Override
public ViewHolder onCreateViewHolder(final ViewGroup parent, final int viewType) {
return new ViewHolder(DataBindingUtil.inflate(layoutInflater, layoutId, parent, false));
}
void setList(@Nullable final ObservableKeyedList<K, E> newList) {
if (list != null)
list.removeOnListChangedCallback(callback);
list = newList;
if (list != null) {
list.addOnListChangedCallback(callback);
}
notifyDataSetChanged();
}
void setRowConfigurationHandler(final RowConfigurationHandler rowConfigurationHandler) {
this.rowConfigurationHandler = rowConfigurationHandler;
}
public interface RowConfigurationHandler<B extends ViewDataBinding, T> {
void onConfigureRow(B binding, T item, int position);
}
private static final class OnListChangedCallback<E extends Keyed<?>>
extends ObservableList.OnListChangedCallback<ObservableList<E>> {
private final WeakReference<ObservableKeyedRecyclerViewAdapter<?, E>> weakAdapter;
private OnListChangedCallback(final ObservableKeyedRecyclerViewAdapter<?, E> adapter) {
weakAdapter = new WeakReference<>(adapter);
}
@Override
public void onChanged(final ObservableList<E> sender) {
final ObservableKeyedRecyclerViewAdapter adapter = weakAdapter.get();
if (adapter != null)
adapter.notifyDataSetChanged();
else
sender.removeOnListChangedCallback(this);
}
@Override
public void onItemRangeChanged(final ObservableList<E> sender, final int positionStart,
final int itemCount) {
onChanged(sender);
}
@Override
public void onItemRangeInserted(final ObservableList<E> sender, final int positionStart,
final int itemCount) {
onChanged(sender);
}
@Override
public void onItemRangeMoved(final ObservableList<E> sender, final int fromPosition,
final int toPosition, final int itemCount) {
onChanged(sender);
}
@Override
public void onItemRangeRemoved(final ObservableList<E> sender, final int positionStart,
final int itemCount) {
onChanged(sender);
}
}
public static class ViewHolder extends RecyclerView.ViewHolder {
final ViewDataBinding binding;
public ViewHolder(final ViewDataBinding binding) {
super(binding.getRoot());
this.binding = binding;
}
}
}

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/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding
import android.content.Context
import android.view.LayoutInflater
import android.view.ViewGroup
import androidx.databinding.DataBindingUtil
import androidx.databinding.ObservableList
import androidx.databinding.ViewDataBinding
import androidx.recyclerview.widget.RecyclerView
import com.wireguard.android.BR
import java.lang.ref.WeakReference
/**
* A generic `RecyclerView.Adapter` backed by a `ObservableKeyedArrayList`.
*/
class ObservableKeyedRecyclerViewAdapter<K, E : Keyed<out K>> internal constructor(context: Context, private val layoutId: Int,
list: ObservableKeyedArrayList<K, E>?) : RecyclerView.Adapter<ObservableKeyedRecyclerViewAdapter.ViewHolder>() {
private val callback = OnListChangedCallback(this)
private val layoutInflater: LayoutInflater = LayoutInflater.from(context)
private var list: ObservableKeyedArrayList<K, E>? = null
private var rowConfigurationHandler: RowConfigurationHandler<ViewDataBinding, Any>? = null
private fun getItem(position: Int): E? = if (list == null || position < 0 || position >= list!!.size) null else list?.get(position)
override fun getItemCount() = list?.size ?: 0
override fun getItemId(position: Int) = (getKey(position)?.hashCode() ?: -1).toLong()
private fun getKey(position: Int): K? = getItem(position)?.key
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
holder.binding.setVariable(BR.collection, list)
holder.binding.setVariable(BR.key, getKey(position))
holder.binding.setVariable(BR.item, getItem(position))
holder.binding.executePendingBindings()
if (rowConfigurationHandler != null) {
val item = getItem(position)
if (item != null) {
rowConfigurationHandler?.onConfigureRow(holder.binding, item, position)
}
}
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = ViewHolder(DataBindingUtil.inflate(layoutInflater, layoutId, parent, false))
fun setList(newList: ObservableKeyedArrayList<K, E>?) {
list?.removeOnListChangedCallback(callback)
list = newList
list?.addOnListChangedCallback(callback)
notifyDataSetChanged()
}
fun setRowConfigurationHandler(rowConfigurationHandler: RowConfigurationHandler<*, *>?) {
this.rowConfigurationHandler = rowConfigurationHandler as? RowConfigurationHandler<ViewDataBinding, Any>
}
interface RowConfigurationHandler<B : ViewDataBinding, T> {
fun onConfigureRow(binding: B, item: T, position: Int)
}
private class OnListChangedCallback<E : Keyed<*>> constructor(adapter: ObservableKeyedRecyclerViewAdapter<*, E>) : ObservableList.OnListChangedCallback<ObservableList<E>>() {
private val weakAdapter: WeakReference<ObservableKeyedRecyclerViewAdapter<*, E>> = WeakReference(adapter)
override fun onChanged(sender: ObservableList<E>) {
val adapter = weakAdapter.get()
if (adapter != null)
adapter.notifyDataSetChanged()
else
sender.removeOnListChangedCallback(this)
}
override fun onItemRangeChanged(sender: ObservableList<E>, positionStart: Int,
itemCount: Int) {
onChanged(sender)
}
override fun onItemRangeInserted(sender: ObservableList<E>, positionStart: Int,
itemCount: Int) {
onChanged(sender)
}
override fun onItemRangeMoved(sender: ObservableList<E>, fromPosition: Int,
toPosition: Int, itemCount: Int) {
onChanged(sender)
}
override fun onItemRangeRemoved(sender: ObservableList<E>, positionStart: Int,
itemCount: Int) {
onChanged(sender)
}
}
class ViewHolder(val binding: ViewDataBinding) : RecyclerView.ViewHolder(binding.root)
init {
setList(list)
}
}

View File

@ -0,0 +1,106 @@
/*
* Copyright © 2020 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.databinding
import java.util.AbstractList
import java.util.Collections
import java.util.Comparator
import java.util.NoSuchElementException
import java.util.Spliterator
/**
* KeyedArrayList that enforces uniqueness and sorted order across the set of keys. This class uses
* binary search to improve lookup and replacement times to O(log(n)). However, due to the
* array-based nature of this class, insertion and removal of elements with anything but the largest
* key still require O(n) time.
*/
class ObservableSortedKeyedArrayList<K, E : Keyed<out K>>(private val comparator: Comparator<in K>?) : ObservableKeyedArrayList<K, E>() {
@Transient
private val keyList = KeyList(this)
override fun add(element: E): Boolean {
val insertionPoint = getInsertionPoint(element)
if (insertionPoint < 0) {
// Skipping insertion is non-destructive if the new and existing objects are the same.
if (element === get(-insertionPoint - 1)) return false
throw IllegalArgumentException("Element with same key already exists in list")
}
super.add(insertionPoint, element)
return true
}
override fun add(index: Int, element: E) {
val insertionPoint = getInsertionPoint(element)
require(insertionPoint >= 0) { "Element with same key already exists in list" }
if (insertionPoint != index) throw IndexOutOfBoundsException("Wrong index given for element")
super.add(index, element)
}
override fun addAll(elements: Collection<E>): Boolean {
var didChange = false
for (e in elements) {
if (add(e))
didChange = true
}
return didChange
}
override fun addAll(index: Int, elements: Collection<E>): Boolean {
var i = index
for (e in elements)
add(i++, e)
return true
}
private fun getInsertionPoint(e: E): Int {
return if (comparator != null) {
-Collections.binarySearch(keyList, e.key, comparator) - 1
} else {
val list = keyList as List<Comparable<K>>
-Collections.binarySearch(list, e.key) - 1
}
}
override fun indexOfKey(key: K): Int {
val index: Int
index = if (comparator != null) {
Collections.binarySearch(keyList, key, comparator)
} else {
val list = keyList as List<Comparable<K>>
Collections.binarySearch(list, key)
}
return if (index >= 0) index else -1
}
override fun set(index: Int, element: E): E {
val order: Int
order = if (comparator != null) {
comparator.compare(element.key, get(index).key)
} else {
val key = element.key as Comparable<K>
key.compareTo(get(index).key)
}
if (order != 0) {
// Allow replacement if the new key would be inserted adjacent to the replaced element.
val insertionPoint = getInsertionPoint(element)
if (insertionPoint < index || insertionPoint > index + 1)
throw IndexOutOfBoundsException("Wrong index given for element")
}
return super.set(index, element)
}
fun values(): Collection<E> {
return this
}
private class KeyList<K, E : Keyed<out K>>(private val list: ObservableSortedKeyedArrayList<K, E>) : AbstractList<K>(), Set<K> {
override fun get(index: Int): K = list[index].key
override val size
get() = list.size
override fun spliterator(): Spliterator<K> = super<AbstractList>.spliterator()
}
}

View File

@ -17,11 +17,10 @@ import com.wireguard.android.R
import com.wireguard.android.databinding.AppListDialogFragmentBinding
import com.wireguard.android.model.ApplicationData
import com.wireguard.android.util.ErrorMessages
import com.wireguard.android.util.ObservableKeyedArrayList
import com.wireguard.android.util.ObservableKeyedList
import com.wireguard.android.databinding.ObservableKeyedArrayList
class AppListDialogFragment : DialogFragment() {
private val appData: ObservableKeyedList<String, ApplicationData> = ObservableKeyedArrayList()
private val appData: ObservableKeyedArrayList<String, ApplicationData> = ObservableKeyedArrayList()
private var currentlyExcludedApps = emptyList<String>()
private fun loadData() {

View File

@ -267,23 +267,26 @@ class TunnelListFragment : BaseFragment() {
binding ?: return
binding!!.fragment = this
Application.getTunnelManager().tunnels.thenAccept { tunnels -> binding!!.tunnels = tunnels }
binding!!.rowConfigurationHandler = RowConfigurationHandler { binding: TunnelListItemBinding, tunnel: ObservableTunnel, position ->
binding.fragment = this
binding.root.setOnClickListener {
if (actionMode == null) {
selectedTunnel = tunnel
} else {
actionModeListener.toggleItemChecked(position)
val parent = this
binding!!.rowConfigurationHandler = object : RowConfigurationHandler<TunnelListItemBinding, ObservableTunnel> {
override fun onConfigureRow(binding: TunnelListItemBinding, item: ObservableTunnel, position: Int) {
binding.fragment = parent
binding.root.setOnClickListener {
if (actionMode == null) {
selectedTunnel = item
} else {
actionModeListener.toggleItemChecked(position)
}
}
binding.root.setOnLongClickListener {
actionModeListener.toggleItemChecked(position)
true
}
if (actionMode != null)
(binding.root as MultiselectableRelativeLayout).setMultiSelected(actionModeListener.checkedItems.contains(position))
else
(binding.root as MultiselectableRelativeLayout).setSingleSelected(selectedTunnel == item)
}
binding.root.setOnLongClickListener {
actionModeListener.toggleItemChecked(position)
true
}
if (actionMode != null)
(binding.root as MultiselectableRelativeLayout).setMultiSelected(actionModeListener.checkedItems.contains(position))
else
(binding.root as MultiselectableRelativeLayout).setSingleSelected(selectedTunnel == tunnel)
}
}

View File

@ -8,12 +8,10 @@ import android.graphics.drawable.Drawable
import androidx.databinding.BaseObservable
import androidx.databinding.Bindable
import com.wireguard.android.BR
import com.wireguard.util.Keyed
import com.wireguard.android.databinding.Keyed
class ApplicationData(val icon: Drawable, val name: String, val packageName: String, isExcludedFromTunnel: Boolean) : BaseObservable(), Keyed<String> {
override fun getKey(): String {
return name
}
override val key = name
@get:Bindable
var isExcludedFromTunnel = isExcludedFromTunnel

View File

@ -11,7 +11,7 @@ import com.wireguard.android.backend.Statistics
import com.wireguard.android.backend.Tunnel
import com.wireguard.android.util.ExceptionLoggers
import com.wireguard.config.Config
import com.wireguard.util.Keyed
import com.wireguard.android.databinding.Keyed
import java9.util.concurrent.CompletableFuture
import java9.util.concurrent.CompletionStage
@ -24,8 +24,7 @@ class ObservableTunnel internal constructor(
config: Config?,
state: Tunnel.State
) : BaseObservable(), Keyed<String>, Tunnel {
override fun getKey() = name
override val key = name
@Bindable
override fun getName() = name

View File

@ -22,8 +22,7 @@ import com.wireguard.android.backend.Statistics
import com.wireguard.android.backend.Tunnel
import com.wireguard.android.configStore.ConfigStore
import com.wireguard.android.util.ExceptionLoggers
import com.wireguard.android.util.ObservableSortedKeyedArrayList
import com.wireguard.android.util.ObservableSortedKeyedList
import com.wireguard.android.databinding.ObservableSortedKeyedArrayList
import com.wireguard.config.Config
import java9.util.Comparators
import java9.util.concurrent.CompletableFuture
@ -34,10 +33,10 @@ import java.util.ArrayList
* Maintains and mediates changes to the set of available WireGuard tunnels,
*/
class TunnelManager(private val configStore: ConfigStore) : BaseObservable() {
val tunnels = CompletableFuture<ObservableSortedKeyedList<String, ObservableTunnel>>()
val tunnels = CompletableFuture<ObservableSortedKeyedArrayList<String, ObservableTunnel>>()
private val context: Context = get()
private val delayedLoadRestoreTunnels = ArrayList<CompletableFuture<Void>>()
private val tunnelMap: ObservableSortedKeyedList<String, ObservableTunnel> = ObservableSortedKeyedArrayList(COMPARATOR)
private val tunnelMap: ObservableSortedKeyedArrayList<String, ObservableTunnel> = ObservableSortedKeyedArrayList(COMPARATOR)
private var haveLoaded = false
private fun addToList(name: String, config: Config?, state: Tunnel.State): ObservableTunnel? {

View File

@ -1,111 +0,0 @@
/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.util;
import com.wireguard.util.Keyed;
import com.wireguard.util.NonNullForAll;
import java.util.Collection;
import java.util.ListIterator;
import java.util.Objects;
import androidx.annotation.Nullable;
import androidx.databinding.ObservableArrayList;
/**
* ArrayList that allows looking up elements by some key property. As the key property must always
* be retrievable, this list cannot hold {@code null} elements. Because this class places no
* restrictions on the order or duplication of keys, lookup by key, as well as all list modification
* operations, require O(n) time.
*/
@NonNullForAll
public class ObservableKeyedArrayList<K, E extends Keyed<? extends K>>
extends ObservableArrayList<E> implements ObservableKeyedList<K, E> {
@Override
public boolean add(@Nullable final E e) {
if (e == null)
throw new NullPointerException("Trying to add a null element");
return super.add(e);
}
@Override
public void add(final int index, @Nullable final E e) {
if (e == null)
throw new NullPointerException("Trying to add a null element");
super.add(index, e);
}
@Override
public boolean addAll(final Collection<? extends E> c) {
if (c.contains(null))
throw new NullPointerException("Trying to add a collection with null element(s)");
return super.addAll(c);
}
@Override
public boolean addAll(final int index, final Collection<? extends E> c) {
if (c.contains(null))
throw new NullPointerException("Trying to add a collection with null element(s)");
return super.addAll(index, c);
}
@Override
public boolean containsAllKeys(final Collection<K> keys) {
for (final K key : keys)
if (!containsKey(key))
return false;
return true;
}
@Override
public boolean containsKey(final K key) {
return indexOfKey(key) >= 0;
}
@Nullable
@Override
public E get(final K key) {
final int index = indexOfKey(key);
return index >= 0 ? get(index) : null;
}
@Nullable
@Override
public E getLast(final K key) {
final int index = lastIndexOfKey(key);
return index >= 0 ? get(index) : null;
}
@Override
public int indexOfKey(final K key) {
final ListIterator<E> iterator = listIterator();
while (iterator.hasNext()) {
final int index = iterator.nextIndex();
if (Objects.equals(iterator.next().getKey(), key))
return index;
}
return -1;
}
@Override
public int lastIndexOfKey(final K key) {
final ListIterator<E> iterator = listIterator(size());
while (iterator.hasPrevious()) {
final int index = iterator.previousIndex();
if (Objects.equals(iterator.previous().getKey(), key))
return index;
}
return -1;
}
@Override
public E set(final int index, @Nullable final E e) {
if (e == null)
throw new NullPointerException("Trying to set a null key");
return super.set(index, e);
}
}

View File

@ -1,21 +0,0 @@
/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.util;
import com.wireguard.util.Keyed;
import com.wireguard.util.KeyedList;
import com.wireguard.util.NonNullForAll;
import androidx.databinding.ObservableList;
/**
* A list that is both keyed and observable.
*/
@NonNullForAll
public interface ObservableKeyedList<K, E extends Keyed<? extends K>>
extends KeyedList<K, E>, ObservableList<E> {
}

View File

@ -1,200 +0,0 @@
/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.util;
import com.wireguard.util.Keyed;
import com.wireguard.util.NonNullForAll;
import com.wireguard.util.SortedKeyedList;
import java.util.AbstractList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.Spliterator;
import androidx.annotation.Nullable;
/**
* KeyedArrayList that enforces uniqueness and sorted order across the set of keys. This class uses
* binary search to improve lookup and replacement times to O(log(n)). However, due to the
* array-based nature of this class, insertion and removal of elements with anything but the largest
* key still require O(n) time.
*/
@NonNullForAll
public class ObservableSortedKeyedArrayList<K, E extends Keyed<? extends K>>
extends ObservableKeyedArrayList<K, E> implements ObservableSortedKeyedList<K, E> {
@Nullable private final Comparator<? super K> comparator;
private final transient KeyList<K, E> keyList = new KeyList<>(this);
@SuppressWarnings("WeakerAccess")
public ObservableSortedKeyedArrayList() {
comparator = null;
}
public ObservableSortedKeyedArrayList(final Comparator<? super K> comparator) {
this.comparator = comparator;
}
public ObservableSortedKeyedArrayList(final Collection<? extends E> c) {
this();
addAll(c);
}
public ObservableSortedKeyedArrayList(final SortedKeyedList<K, E> other) {
this(other.comparator());
addAll(other);
}
@Override
public boolean add(final E e) {
final int insertionPoint = getInsertionPoint(e);
if (insertionPoint < 0) {
// Skipping insertion is non-destructive if the new and existing objects are the same.
if (e == get(-insertionPoint - 1))
return false;
throw new IllegalArgumentException("Element with same key already exists in list");
}
super.add(insertionPoint, e);
return true;
}
@Override
public void add(final int index, final E e) {
final int insertionPoint = getInsertionPoint(e);
if (insertionPoint < 0)
throw new IllegalArgumentException("Element with same key already exists in list");
if (insertionPoint != index)
throw new IndexOutOfBoundsException("Wrong index given for element");
super.add(index, e);
}
@Override
public boolean addAll(final Collection<? extends E> c) {
boolean didChange = false;
for (final E e : c)
if (add(e))
didChange = true;
return didChange;
}
@Override
public boolean addAll(int index, final Collection<? extends E> c) {
for (final E e : c)
add(index++, e);
return true;
}
@Nullable
@Override
public Comparator<? super K> comparator() {
return comparator;
}
@Override
public K firstKey() {
if (isEmpty())
// The parameter in the exception is only to shut
// lint up, we never care for the exception message.
throw new NoSuchElementException("Empty set");
return get(0).getKey();
}
private int getInsertionPoint(final E e) {
if (comparator != null) {
return -Collections.binarySearch(keyList, e.getKey(), comparator) - 1;
} else {
@SuppressWarnings("unchecked") final List<Comparable<? super K>> list =
(List<Comparable<? super K>>) keyList;
return -Collections.binarySearch(list, e.getKey()) - 1;
}
}
@Override
public int indexOfKey(final K key) {
final int index;
if (comparator != null) {
index = Collections.binarySearch(keyList, key, comparator);
} else {
@SuppressWarnings("unchecked") final List<Comparable<? super K>> list =
(List<Comparable<? super K>>) keyList;
index = Collections.binarySearch(list, key);
}
return index >= 0 ? index : -1;
}
@Override
public Set<K> keySet() {
return keyList;
}
@Override
public int lastIndexOfKey(final K key) {
// There can never be more than one element with the same key in the list.
return indexOfKey(key);
}
@Override
public K lastKey() {
if (isEmpty())
// The parameter in the exception is only to shut
// lint up, we never care for the exception message.
throw new NoSuchElementException("Empty set");
return get(size() - 1).getKey();
}
@Override
public E set(final int index, final E e) {
final int order;
if (comparator != null) {
order = comparator.compare(e.getKey(), get(index).getKey());
} else {
@SuppressWarnings("unchecked") final Comparable<? super K> key =
(Comparable<? super K>) e.getKey();
order = key.compareTo(get(index).getKey());
}
if (order != 0) {
// Allow replacement if the new key would be inserted adjacent to the replaced element.
final int insertionPoint = getInsertionPoint(e);
if (insertionPoint < index || insertionPoint > index + 1)
throw new IndexOutOfBoundsException("Wrong index given for element");
}
return super.set(index, e);
}
@Override
public Collection<E> values() {
return this;
}
private static final class KeyList<K, E extends Keyed<? extends K>>
extends AbstractList<K> implements Set<K> {
private final ObservableSortedKeyedArrayList<K, E> list;
private KeyList(final ObservableSortedKeyedArrayList<K, E> list) {
this.list = list;
}
@Override
public K get(final int index) {
return list.get(index).getKey();
}
@Override
public int size() {
return list.size();
}
@Override
@SuppressWarnings("EmptyMethod")
public Spliterator<K> spliterator() {
return super.spliterator();
}
}
}

View File

@ -1,19 +0,0 @@
/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.util;
import com.wireguard.util.Keyed;
import com.wireguard.util.NonNullForAll;
import com.wireguard.util.SortedKeyedList;
/**
* A list that is both sorted/keyed and observable.
*/
@NonNullForAll
public interface ObservableSortedKeyedList<K, E extends Keyed<? extends K>>
extends ObservableKeyedList<K, E>, SortedKeyedList<K, E> {
}

View File

@ -1,15 +0,0 @@
/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.util;
/**
* Interface for objects that have a identifying key of the given type.
*/
@NonNullForAll
public interface Keyed<K> {
K getKey();
}

View File

@ -1,33 +0,0 @@
/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.util;
import java.util.Collection;
import java.util.List;
import androidx.annotation.Nullable;
/**
* A list containing elements that can be looked up by key. A {@code KeyedList} cannot contain
* {@code null} elements.
*/
@NonNullForAll
public interface KeyedList<K, E extends Keyed<? extends K>> extends List<E> {
boolean containsAllKeys(Collection<K> keys);
boolean containsKey(K key);
@Nullable
E get(K key);
@Nullable
E getLast(K key);
int indexOfKey(K key);
int lastIndexOfKey(K key);
}

View File

@ -1,32 +0,0 @@
/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.util;
import java.util.Collection;
import java.util.Comparator;
import java.util.Set;
import androidx.annotation.Nullable;
/**
* A keyed list where all elements are sorted by the comparator returned by {@code comparator()}
* applied to their keys.
*/
@NonNullForAll
public interface SortedKeyedList<K, E extends Keyed<? extends K>> extends KeyedList<K, E> {
Comparator<? super K> comparator();
@Nullable
K firstKey();
Set<K> keySet();
@Nullable
K lastKey();
Collection<E> values();
}

View File

@ -15,7 +15,7 @@
<variable
name="appData"
type="com.wireguard.android.util.ObservableKeyedList&lt;String, ApplicationData&gt;" />
type="com.wireguard.android.databinding.ObservableKeyedArrayList&lt;String, ApplicationData&gt;" />
</data>
<FrameLayout

View File

@ -8,7 +8,7 @@
<variable
name="collection"
type="com.wireguard.android.util.ObservableKeyedList&lt;String, com.wireguard.android.model.ApplicationData&gt;" />
type="com.wireguard.android.databinding.ObservableKeyedArrayList&lt;String, com.wireguard.android.model.ApplicationData&gt;" />
<variable
name="key"

View File

@ -17,7 +17,7 @@
<variable
name="tunnels"
type="com.wireguard.android.util.ObservableKeyedList&lt;String, ObservableTunnel&gt;" />
type="com.wireguard.android.databinding.ObservableKeyedArrayList&lt;String, ObservableTunnel&gt;" />
</data>
<androidx.coordinatorlayout.widget.CoordinatorLayout

View File

@ -11,7 +11,7 @@
<variable
name="collection"
type="com.wireguard.android.util.ObservableKeyedList&lt;String, ObservableTunnel&gt;" />
type="com.wireguard.android.databinding.ObservableKeyedArrayList&lt;String, ObservableTunnel&gt;" />
<variable
name="key"