+/*
+ * Copyright 2017 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
+ *
+ * Privacy Browser is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Privacy Browser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Privacy Browser. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacybrowser.dialogs;
+
+import android.annotation.SuppressLint;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Bundle;
+// We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <= 22.
+import android.support.annotation.NonNull;
+import android.support.v7.app.AppCompatDialogFragment;
+import android.view.KeyEvent;
+import android.view.View;
+import android.view.WindowManager;
+import android.widget.EditText;
+
+import com.stoutner.privacybrowser.R;
+
+public class AddDomainDialog extends AppCompatDialogFragment {
+ // The public interface is used to send information back to the parent activity.
+ public interface AddDomainListener {
+ void onAddDomain(AppCompatDialogFragment dialogFragment);
+ }
+
+ // `addDomainListener` is used in `onAttach()` and `onCreateDialog()`.
+ private AddDomainListener addDomainListener;
+
+
+ public void onAttach(Context context) {
+ super.onAttach(context);
+
+ // Get a handle for `AddDomainListener` from `context`.
+ try {
+ addDomainListener = (AddDomainListener) context;
+ } catch(ClassCastException exception) {
+ throw new ClassCastException(context.toString() + " must implement `AddDomainListener`.");
+ }
+ }
+
+ // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
+ @SuppressLint("InflateParams")
+ @Override
+ @NonNull
+ public Dialog onCreateDialog(Bundle savedInstanceState) {
+ // Use `AlertDialog.Builder` to create the `AlertDialog`. The style formats the color of the button text.
+ AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog);
+ dialogBuilder.setTitle(R.string.add_domain);
+ // The parent view is `null` because it will be assigned by the `AlertDialog`.
+ dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.add_domain_dialog, null));
+
+ // Set an `onClick()` listener for the negative button.
+ dialogBuilder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
+ @Override
+ public void onClick(DialogInterface dialog, int which) {
+ // Do nothing. The `AlertDialog` will close automatically.
+ }
+ });
+
+ // Set an `onClick()` listener for the positive button.
+ dialogBuilder.setPositiveButton(R.string.add, new DialogInterface.OnClickListener() {
+ @Override
+ public void onClick(DialogInterface dialog, int which) {
+ // Return the `DialogFragment` to the parent activity on add.
+ addDomainListener.onAddDomain(AddDomainDialog.this);
+ }
+ });
+
+ // Create an `AlertDialog` from the `AlertDialog.Builder`.
+ final AlertDialog alertDialog = dialogBuilder.create();
+
+ // Remove the warning below the `setSoftInputMode` might produce `java.lang.NullPointerException`.
+ assert alertDialog.getWindow() != null;
+
+ // Show the keyboard when the `AlertDialog` is displayed on the screen.
+ alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
+
+ // We need to show the `AlertDialog` before w3e can call `setOnKeyListener()` below.
+ alertDialog.show();
+
+ // Allow the `enter` key on the keyboard to create the domain from `add_domain_edittext`.
+ EditText addDomainEditText = (EditText) alertDialog.findViewById(R.id.domain_name_edittext);
+ addDomainEditText.setOnKeyListener(new View.OnKeyListener() {
+ public boolean onKey(View view, int keyCode, KeyEvent event) {
+ // If the event is a key-down on the `enter` key, select the `PositiveButton` `Add`.
+ if ((keyCode == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN)) {
+ // Trigger `addDomainListener` and return the `DialogFragment` to the parent activity.
+ addDomainListener.onAddDomain(AddDomainDialog.this);
+ // Manually dismiss the `AlertDialog`.
+ alertDialog.dismiss();
+ // Consume the event.
+ return true;
+ } else { // If any other key was pressed, do not consume the event.
+ return false;
+ }
+ }
+ });
+
+ // `onCreateDialog()` requires the return of an `AlertDialog`.
+ return alertDialog;
+ }
+}