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/*
* Copyright © 2018 Samuel Holland <samuel@sholland.org>
* SPDX-License-Identifier: GPL-2.0-or-later
*/
package com.wireguard.android.databinding;
import android.databinding.BindingAdapter;
import android.databinding.ObservableList;
import android.databinding.adapters.ListenerUtil;
import android.text.InputFilter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import com.wireguard.android.R;
import com.wireguard.android.util.Keyed;
import com.wireguard.android.util.ObservableKeyedList;
import com.wireguard.android.widget.ToggleSwitch;
import com.wireguard.android.widget.ToggleSwitch.OnBeforeCheckedChangeListener;
/**
* 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,
final ObservableList<E> oldList, final int oldLayoutId,
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 <K, E extends Keyed<? extends K>>
void setItems(final ListView view,
final ObservableKeyedList<K, E> oldList, final int oldLayoutId,
final ObservableKeyedList<K, E> newList, final int newLayoutId) {
if (oldList == newList && oldLayoutId == newLayoutId)
return;
// The ListAdapter interface is not generic, so this cannot be checked.
@SuppressWarnings("unchecked") ObservableKeyedListAdapter<K, E> adapter =
(ObservableKeyedListAdapter<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 ObservableKeyedListAdapter<>(view.getContext(), newLayoutId, newList);
view.setAdapter(adapter);
}
// 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);
}
}
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