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ProfileList: Add minimal activity

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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>
This commit is contained in:
Samuel Holland 2017-07-29 06:09:55 -05:00
parent 85f1d4f1d3
commit 7ceafaf2bb
6 changed files with 246 additions and 0 deletions
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7
app/src/main/AndroidManifest.xml
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@ -9,6 +9,13 @@
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@android:style/Theme.Material.Light.DarkActionBar">
<activity android:name=".ProfileListActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

38
app/src/main/java/com/wireguard/android/BindingAdapters.java Normal file
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@ -0,0 +1,38 @@
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() {
}
}

91
app/src/main/java/com/wireguard/android/ObservableListAdapter.java Normal file
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@ -0,0 +1,91 @@
package com.wireguard.android;
import android.content.Context;
import android.databinding.DataBindingUtil;
import android.databinding.ObservableList;
import android.databinding.ViewDataBinding;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListAdapter;
/**
* A generic ListAdapter backed by an ObservableList.
*/
class ObservableListAdapter<T> extends BaseAdapter implements ListAdapter {
private final int layoutId;
private final LayoutInflater layoutInflater;
private ObservableList<T> list;
private final OnListChangedCallback<ObservableList<T>> callback = new OnListChangedCallback<>();
ObservableListAdapter(Context context, int layoutId, ObservableList<T> list) {
this.layoutInflater = LayoutInflater.from(context);
this.layoutId = layoutId;
setList(list);
}
@Override
public int getCount() {
return list != null ? list.size() : 0;
}
@Override
public T getItem(int position) {
return list != null ? list.get(position) : null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewDataBinding binding = DataBindingUtil.getBinding(convertView);
if (binding == null)
binding = DataBindingUtil.inflate(layoutInflater, layoutId, parent, false);
binding.setVariable(BR.item, getItem(position));
binding.executePendingBindings();
return binding.getRoot();
}
public void setList(ObservableList<T> newList) {
if (list != null)
list.removeOnListChangedCallback(callback);
list = newList;
if (list != null) {
list.addOnListChangedCallback(callback);
}
}
private class OnListChangedCallback<L extends ObservableList<T>>
extends ObservableList.OnListChangedCallback<L> {
@Override
public void onChanged(L sender) {
ObservableListAdapter.this.notifyDataSetChanged();
}
@Override
public void onItemRangeChanged(L sender, int positionStart, int itemCount) {
ObservableListAdapter.this.notifyDataSetChanged();
}
@Override
public void onItemRangeInserted(L sender, int positionStart, int itemCount) {
ObservableListAdapter.this.notifyDataSetChanged();
}
@Override
public void onItemRangeMoved(L sender, int fromPosition, int toPosition,
int itemCount) {
ObservableListAdapter.this.notifyDataSetChanged();
}
@Override
public void onItemRangeRemoved(L sender, int positionStart, int itemCount) {
ObservableListAdapter.this.notifyDataSetChanged();
}
}
}

64
app/src/main/java/com/wireguard/android/ProfileListActivity.java Normal file
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@ -0,0 +1,64 @@
package com.wireguard.android;
import android.app.Activity;
import android.databinding.DataBindingUtil;
import android.databinding.ObservableArrayList;
import android.databinding.ObservableList;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import com.wireguard.android.databinding.ProfileListActivityBinding;
import com.wireguard.config.Profile;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
public class ProfileListActivity extends Activity {
private final ObservableList<Profile> profiles = new ObservableArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final ProfileListActivityBinding binding =
DataBindingUtil.setContentView(this, R.layout.profile_list_activity);
binding.setProfiles(profiles);
new ProfileLoader().execute(getFilesDir().listFiles());
}
private class ProfileLoader extends AsyncTask<File, Profile, ArrayList<Profile>> {
private static final String TAG = "WGProfileLoader";
@Override
protected ArrayList<Profile> doInBackground(File... files) {
final ArrayList<Profile> loadedProfiles = new ArrayList<>();
for (File file : files) {
final String fileName = file.getName();
final int suffixStart = fileName.lastIndexOf(".conf");
if (suffixStart <= 0) {
Log.w(TAG, "Ignoring stray file " + fileName);
continue;
}
final Profile profile = new Profile(fileName.substring(0, suffixStart));
try {
final FileInputStream inputStream = openFileInput(fileName);
profile.fromStream(inputStream);
loadedProfiles.add(profile);
} catch (IOException e) {
Log.w(TAG, "Failed to load profile from " + fileName, e);
}
if (isCancelled())
break;
}
return loadedProfiles;
}
@Override
protected void onPostExecute(ArrayList<Profile> loadedProfiles) {
// FIXME: This should replace an existing profile if the name matches.
profiles.addAll(loadedProfiles);
}
}
}

17
app/src/main/res/layout/profile_list_activity.xml Normal file
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@ -0,0 +1,17 @@
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<data>
<variable
name="profiles"
type="android.databinding.ObservableList&lt;com.wireguard.config.Profile&gt;" />
</data>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:items="@{profiles}"
app:layout="@{@layout/profile_list_item}" />
</layout>

29
app/src/main/res/layout/profile_list_item.xml Normal file
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@ -0,0 +1,29 @@
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">
<data>
<variable
name="item"
type="com.wireguard.config.Profile" />
</data>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp">
<TextView
android:id="@+id/profile_name"
style="?android:attr/textAppearanceMedium"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@{item.name}" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/profile_name"
android:text="@{item.toString()}" />
</RelativeLayout>
</layout>