[Wi-Fi] Add a new fragment for configuring a new AccessPoint network.

When configuring a new access point in Wi-Fi settings page, it's hard to figure out there are some other option items after you tapping the "Advanced options" button.

To improve it, use full screen fragment to present the configuration items, so user can see as many items as possible.

Bug: 31052996
Test: Mock this fragment and check each button status run as expected.
Change-Id: I1c8e552fcabb1414bb500d918ed61287bf4aece2

src/com/android/settings/wifi/ConfigureAccessPointFragment.java

@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.wifi;
+
+import android.app.ActionBar;
+import android.app.Activity;
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import com.android.settings.R;
+import com.android.settings.core.InstrumentedFragment;
+import com.android.settingslib.wifi.AccessPoint;
+
+import androidx.annotation.VisibleForTesting;
+
+/**
+ * Detail page for configuring Wi-Fi network.
+ *
+ * The AccessPoint should be saved to the argument when launching this class in order to properly
+ * render this page.
+ */
+public class ConfigureAccessPointFragment extends InstrumentedFragment implements WifiConfigUiBase {
+
+    public static final String NETWORK_CONFIG_KEY = "network_config_key";
+
+    private static final int SUBMIT_BUTTON_ID = android.R.id.button1;
+    private static final int CANCEL_BUTTON_ID = android.R.id.button2;
+
+    private WifiConfigController mUiController;
+    private Button mSubmitBtn;
+    private Button mCancelBtn;
+    private AccessPoint mAccessPoint;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        mAccessPoint = new AccessPoint(context, getArguments());
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.SETTINGS_WIFI_CONFIGURE_NETWORK;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        final View rootView = inflater.inflate(R.layout.wifi_add_network_view,
+                container, false /* attachToRoot */);
+
+        final Button neutral = rootView.findViewById(android.R.id.button3);
+        if (neutral != null) {
+            neutral.setVisibility(View.GONE);
+        }
+
+        mSubmitBtn = rootView.findViewById(SUBMIT_BUTTON_ID);
+        mCancelBtn = rootView.findViewById(CANCEL_BUTTON_ID);
+        mSubmitBtn.setOnClickListener(view -> handleSubmitAction());
+        mCancelBtn.setOnClickListener(view -> handleCancelAction());
+
+        mUiController = new WifiConfigController(this, rootView, mAccessPoint,
+                getMode(), false /* requestFocus */);
+
+        /**
+         * For this add AccessPoint UI, need to remove the Home button, so set related feature as
+         * false.
+         */
+        final ActionBar actionBar = getActivity().getActionBar();
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(false);
+            actionBar.setHomeButtonEnabled(false);
+            actionBar.setDisplayShowHomeEnabled(false);
+        }
+
+        return rootView;
+    }
+
+    @Override
+    public void onViewStateRestored(Bundle savedInstanceState) {
+        super.onViewStateRestored(savedInstanceState);
+        mUiController.updatePassword();
+    }
+
+    @Override
+    public int getMode() {
+        return WifiConfigUiBase.MODE_CONNECT;
+    }
+
+    @Override
+    public WifiConfigController getController() {
+        return mUiController;
+    }
+
+    @Override
+    public void dispatchSubmit() {
+        // Do nothing
+    }
+
+    @Override
+    public void setTitle(int id) {
+        getActivity().setTitle(id);
+    }
+
+    @Override
+    public void setTitle(CharSequence title) {
+        getActivity().setTitle(title);
+    }
+
+    @Override
+    public void setSubmitButton(CharSequence text) {
+        mSubmitBtn.setText(text);
+    }
+
+    @Override
+    public void setCancelButton(CharSequence text) {
+        mCancelBtn.setText(text);
+    }
+
+    @Override
+    public void setForgetButton(CharSequence text) {
+        // AddNetwork doesn't need forget button.
+    }
+
+    @Override
+    public Button getSubmitButton() {
+        return mSubmitBtn;
+    }
+
+    @Override
+    public Button getCancelButton() {
+        return mCancelBtn;
+    }
+
+    @Override
+    public Button getForgetButton() {
+        // AddNetwork doesn't need forget button.
+        return null;
+    }
+
+    @VisibleForTesting
+    void handleSubmitAction() {
+        final Intent intent = new Intent();
+        final Activity activity = getActivity();
+        intent.putExtra(NETWORK_CONFIG_KEY, mUiController.getConfig());
+        activity.setResult(Activity.RESULT_OK, intent);
+        activity.finish();
+    }
+
+    @VisibleForTesting
+    void handleCancelAction() {
+        final Activity activity = getActivity();
+        activity.setResult(Activity.RESULT_CANCELED);
+        activity.finish();
+    }
+}