pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/base/java/org/mozilla/gecko/RemoteClientsDialogFragment.java

@@ -0,0 +1,133 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.mozilla.gecko.db.RemoteClient;
+
+import android.app.AlertDialog;
+import android.app.AlertDialog.Builder;
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.Fragment;
+import android.util.SparseBooleanArray;
+
+/**
+ * A dialog fragment that displays a list of remote clients.
+ * <p>
+ * The dialog allows both single (one tap) and multiple (checkbox) selection.
+ * The dialog's results are communicated via the {@link RemoteClientsListener}
+ * interface. Either the dialog fragment's <i>target fragment</i> (see
+ * {@link Fragment#setTargetFragment(Fragment, int)}), or the containing
+ * <i>activity</i>, must implement that interface. See
+ * {@link #notifyListener(List)} for details.
+ */
+public class RemoteClientsDialogFragment extends DialogFragment {
+    private static final String KEY_TITLE = "title";
+    private static final String KEY_CHOICE_MODE = "choice_mode";
+    private static final String KEY_POSITIVE_BUTTON_TEXT = "positive_button_text";
+    private static final String KEY_CLIENTS = "clients";
+
+    public interface RemoteClientsListener {
+        // Always called on the main UI thread.
+        public void onClients(List<RemoteClient> clients);
+    }
+
+    public enum ChoiceMode {
+        SINGLE,
+        MULTIPLE,
+    }
+
+    public static RemoteClientsDialogFragment newInstance(String title, String positiveButtonText, ChoiceMode choiceMode, ArrayList<RemoteClient> clients) {
+        final RemoteClientsDialogFragment dialog = new RemoteClientsDialogFragment();
+        final Bundle args = new Bundle();
+        args.putString(KEY_TITLE, title);
+        args.putString(KEY_POSITIVE_BUTTON_TEXT, positiveButtonText);
+        args.putInt(KEY_CHOICE_MODE, choiceMode.ordinal());
+        args.putParcelableArrayList(KEY_CLIENTS, clients);
+        dialog.setArguments(args);
+        return dialog;
+    }
+
+    public RemoteClientsDialogFragment() {
+        // Empty constructor is required for DialogFragment.
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        GeckoApplication.watchReference(getActivity(), this);
+    }
+
+    protected void notifyListener(List<RemoteClient> clients) {
+        RemoteClientsListener listener;
+        try {
+            listener = (RemoteClientsListener) getTargetFragment();
+        } catch (ClassCastException e) {
+            try {
+                listener = (RemoteClientsListener) getActivity();
+            } catch (ClassCastException f) {
+                throw new ClassCastException(getTargetFragment() + " or " + getActivity()
+                        + " must implement RemoteClientsListener");
+            }
+        }
+        listener.onClients(clients);
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final String title = getArguments().getString(KEY_TITLE);
+        final String positiveButtonText = getArguments().getString(KEY_POSITIVE_BUTTON_TEXT);
+        final ChoiceMode choiceMode = ChoiceMode.values()[getArguments().getInt(KEY_CHOICE_MODE)];
+        final ArrayList<RemoteClient> clients = getArguments().getParcelableArrayList(KEY_CLIENTS);
+
+        final Builder builder = new AlertDialog.Builder(getActivity());
+        builder.setTitle(title);
+
+        final String[] clientNames = new String[clients.size()];
+        for (int i = 0; i < clients.size(); i++) {
+            clientNames[i] = clients.get(i).name;
+        }
+
+        if (choiceMode == ChoiceMode.MULTIPLE) {
+            builder.setMultiChoiceItems(clientNames, null, null);
+            builder.setPositiveButton(positiveButtonText, new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialogInterface, int which) {
+                    if (which != Dialog.BUTTON_POSITIVE) {
+                        return;
+                    }
+
+                    final AlertDialog dialog = (AlertDialog) dialogInterface;
+                    final SparseBooleanArray checkedItemPositions = dialog.getListView().getCheckedItemPositions();
+                    final ArrayList<RemoteClient> checked = new ArrayList<RemoteClient>();
+                    for (int i = 0; i < clients.size(); i++) {
+                        if (checkedItemPositions.get(i)) {
+                            checked.add(clients.get(i));
+                        }
+                    }
+                    notifyListener(checked);
+                }
+            });
+        } else {
+            builder.setItems(clientNames, new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialog, int index) {
+                    final ArrayList<RemoteClient> checked = new ArrayList<RemoteClient>();
+                    checked.add(clients.get(index));
+                    notifyListener(checked);
+                }
+            });
+        }
+
+        return builder.create();
+    }
+}