Files
wirevpn/app/src/main/java/com/wireguard/android/BindingAdapters.java
T
Samuel Holland 7ceafaf2bb ProfileList: Add minimal activity
For now, it simply reads the files in the app's data directory with
file names ending in ".conf" and displays them in a list.

This includes the generic list data binding setup for future use.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-07-29 06:09:55 -05:00

39 lines
1.5 KiB
Java

package com.wireguard.android;
import android.databinding.BindingAdapter;
import android.databinding.ObservableList;
import android.widget.ListView;
/**
* Static methods for use by generated code in the Android data binding library.
*/
public final class BindingAdapters {
@BindingAdapter({"items", "layout"})
public static <T> void listBinding(ListView view, ObservableList<T> oldList, int oldLayoutId,
ObservableList<T> newList, int newLayoutId) {
// Remove any existing binding when there is no new list.
if (newList == null) {
view.setAdapter(null);
return;
}
// The ListAdapter interface is not generic, so this cannot be checked.
@SuppressWarnings("unchecked")
ObservableListAdapter<T> adapter = (ObservableListAdapter<T>) view.getAdapter();
// If the layout changes, any existing adapter must be replaced.
if (newLayoutId != oldLayoutId)
adapter = null;
// Add a new binding if there was none, or if it must be replaced due to a layout change.
if (adapter == null) {
adapter = new ObservableListAdapter<>(view.getContext(), newLayoutId, newList);
view.setAdapter(adapter);
} else if (newList != oldList) {
// Changing the list only requires modifying the existing adapter.
adapter.setList(newList);
}
}
private BindingAdapters() {
}
}