AppListDialogFragment: add implementation for excluding applications

Signed-off-by: Eric Kuck <eric@bluelinelabs.com>

2 files changed, 159 insertions, 1 deletions

diff --git a/app/src/main/java/com/wireguard/android/fragment/AppListDialogFragment.java b/app/src/main/java/com/wireguard/android/fragment/AppListDialogFragment.java
new file mode 100644
index 00000000..7b238dd5
--- /dev/null
+++ b/app/src/main/java/com/wireguard/android/fragment/AppListDialogFragment.java
@@ -0,0 +1,132 @@
+package com.wireguard.android.fragment;
+
+import android.app.Activity;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.Fragment;
+import android.support.v7.app.AlertDialog;
+import android.widget.Toast;
+
+import com.wireguard.android.Application;
+import com.wireguard.android.R;
+import com.wireguard.android.activity.BaseActivity;
+import com.wireguard.android.databinding.AppListDialogFragmentBinding;
+import com.wireguard.android.model.ApplicationData;
+import com.wireguard.android.model.Tunnel;
+import com.wireguard.android.util.ExceptionLoggers;
+import com.wireguard.android.util.ObservableKeyedArrayList;
+import com.wireguard.android.util.ObservableKeyedList;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class AppListDialogFragment extends DialogFragment {
+
+    private static final String KEY_EXCLUDED_APPS = "excludedApps";
+
+    private List<String> currentlyExcludedApps;
+    private Tunnel tunnel;
+    private final ObservableKeyedList<String, ApplicationData> appData = new ObservableKeyedArrayList<>();
+
+    public static <T extends Fragment & AppExclusionListener> AppListDialogFragment newInstance(String[] excludedApps, T target) {
+        Bundle extras = new Bundle();
+        extras.putStringArray(KEY_EXCLUDED_APPS, excludedApps);
+        AppListDialogFragment fragment = new AppListDialogFragment();
+        fragment.setTargetFragment(target, 0);
+        fragment.setArguments(extras);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        currentlyExcludedApps = Arrays.asList(getArguments().getStringArray(KEY_EXCLUDED_APPS));
+    }
+
+    @Override
+    public void onAttach(final Context context) {
+        super.onAttach(context);
+        if (context instanceof BaseActivity) {
+            tunnel = ((BaseActivity) context).getSelectedTunnel();
+        }
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity());
+        alertDialogBuilder.setTitle(R.string.excluded_applications);
+
+        AppListDialogFragmentBinding binding = AppListDialogFragmentBinding.inflate(getActivity().getLayoutInflater(), null, false);
+        binding.executePendingBindings();
+        alertDialogBuilder.setView(binding.getRoot());
+
+        alertDialogBuilder.setPositiveButton(R.string.set_exclusions, (dialog, which) -> setExclusionsAndDismiss());
+        alertDialogBuilder.setNegativeButton(R.string.cancel, (dialog, which) -> dialog.dismiss());
+
+        binding.setFragment(this);
+        binding.setAppData(appData);
+
+        loadData();
+
+        return alertDialogBuilder.create();
+    }
+
+    private void loadData() {
+        final Activity activity = getActivity();
+        if (activity == null) {
+            return;
+        }
+
+        final PackageManager pm = activity.getPackageManager();
+        Application.getAsyncWorker().supplyAsync(() -> {
+            Intent launcherIntent = new Intent(Intent.ACTION_MAIN, null);
+            launcherIntent.addCategory(Intent.CATEGORY_LAUNCHER);
+            List<ResolveInfo> resolveInfos = pm.queryIntentActivities(launcherIntent, 0);
+
+            List<ApplicationData> appData = new ArrayList<>();
+            for (ResolveInfo resolveInfo : resolveInfos) {
+                String packageName = resolveInfo.activityInfo.packageName;
+                appData.add(new ApplicationData(resolveInfo.loadIcon(pm), resolveInfo.loadLabel(pm).toString(), packageName, currentlyExcludedApps.contains(packageName)));
+            }
+
+            Collections.sort(appData, (lhs, rhs) -> lhs.getName().toLowerCase().compareTo(rhs.getName().toLowerCase()));
+            return appData;
+        }).whenComplete(((data, throwable) -> {
+            if (data != null) {
+                appData.clear();
+                appData.addAll(data);
+            } else {
+                final String error = throwable != null ? ExceptionLoggers.unwrapMessage(throwable) : "Unknown";
+                final String message = activity.getString(R.string.error_fetching_apps, error);
+                Toast.makeText(activity, message, Toast.LENGTH_LONG).show();
+                dismissAllowingStateLoss();
+            }
+        }));
+    }
+
+    void setExclusionsAndDismiss() {
+        final List<String> excludedApps = new ArrayList<>();
+        for (ApplicationData data : appData) {
+            if (data.isExcludedFromTunnel()) {
+                excludedApps.add(data.getPackageName());
+            }
+        }
+
+        ((AppExclusionListener) getTargetFragment()).onExcludedAppsSelected(excludedApps);
+        dismiss();
+    }
+
+    public interface AppExclusionListener {
+        void onExcludedAppsSelected(List<String> excludedApps);
+    }
+
+}
diff --git a/app/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.java b/app/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.java
index ea03077c..c2778c36 100644
--- a/app/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.java
+++ b/app/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.java
@@ -11,6 +11,7 @@ import android.content.Context;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.design.widget.Snackbar;
+import android.support.v4.app.FragmentManager;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -24,16 +25,20 @@ import android.widget.Toast;
 import com.wireguard.android.Application;
 import com.wireguard.android.R;
 import com.wireguard.android.databinding.TunnelEditorFragmentBinding;
+import com.wireguard.android.fragment.AppListDialogFragment.AppExclusionListener;
 import com.wireguard.android.model.Tunnel;
 import com.wireguard.android.model.TunnelManager;
 import com.wireguard.android.util.ExceptionLoggers;
+import com.wireguard.config.Attribute;
 import com.wireguard.config.Config;
 
+import java.util.List;
+
 /**
  * Fragment for editing a WireGuard configuration.
  */
 
-public class TunnelEditorFragment extends BaseFragment {
+public class TunnelEditorFragment extends BaseFragment implements AppExclusionListener {
     private static final String KEY_LOCAL_CONFIG = "local_config";
     private static final String KEY_ORIGINAL_NAME = "original_name";
     private static final String TAG = "WireGuard/" + TunnelEditorFragment.class.getSimpleName();
@@ -202,6 +207,8 @@ public class TunnelEditorFragment extends BaseFragment {
 
     @Override
     public void onViewStateRestored(final Bundle savedInstanceState) {
+        binding.setFragment(this);
+
         if (savedInstanceState == null) {
             onSelectedTunnelChanged(null, getSelectedTunnel());
         } else {
@@ -216,4 +223,23 @@ public class TunnelEditorFragment extends BaseFragment {
 
         super.onViewStateRestored(savedInstanceState);
     }
+
+    public void onRequestSetExcludedApplications(@SuppressWarnings("unused") final View view) {
+        FragmentManager fragmentManager = getFragmentManager();
+        if (fragmentManager != null) {
+            String[] excludedApps = excludedApplications();
+            AppListDialogFragment fragment = AppListDialogFragment.newInstance(excludedApps, this);
+            fragment.show(getFragmentManager(), null);
+        }
+    }
+
+    @Override
+    public void onExcludedAppsSelected(List<String> excludedApps) {
+        binding.getConfig().getInterfaceSection().setExcludedApplications(Attribute.iterableToString(excludedApps));
+    }
+
+    public String[] excludedApplications() {
+       return Attribute.stringToList(binding.getConfig().getInterfaceSection().getExcludedApplications());
+    }
+
 }