[adb-wireless] Add Wireless Debugging Switch in Developer options.

Bug: 111434128
Bug: 119492574

Test: make RunSettingsRoboTests ROBOTEST_FILTER=WirelessDebugging
Change-Id: I188badb43035172642cf235bb27e56d3a1dea169

src/com/android/settings/development/WirelessDebuggingEnabler.java

@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2020 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.development;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.Looper;
+import android.provider.Settings;
+import android.util.Log;
+
+import com.android.settings.widget.SwitchWidgetController;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnPause;
+import com.android.settingslib.core.lifecycle.events.OnResume;
+
+/**
+ * Class to control the switch bar in the wireless debugging fragment.
+ */
+public class WirelessDebuggingEnabler implements SwitchWidgetController.OnSwitchChangeListener,
+        LifecycleObserver, OnResume, OnPause {
+    private static final String TAG = "WirelessDebuggingEnabler";
+
+    private final SwitchWidgetController mSwitchWidget;
+    private Context mContext;
+    private boolean mListeningToOnSwitchChange = false;
+    private OnEnabledListener mListener;
+    private final ContentResolver mContentResolver;
+    private final ContentObserver mSettingsObserver;
+    private final Handler mHandler = new Handler(Looper.getMainLooper());
+
+    public WirelessDebuggingEnabler(Context context, SwitchWidgetController switchWidget,
+            OnEnabledListener listener, Lifecycle lifecycle) {
+        mContext = context;
+        mSwitchWidget = switchWidget;
+        mSwitchWidget.setListener(this);
+        mSwitchWidget.setupView();
+
+        mListener = listener;
+        if (lifecycle != null) {
+            lifecycle.addObserver(this);
+        }
+
+        mContentResolver = context.getContentResolver();
+        mSettingsObserver = new ContentObserver(mHandler) {
+            @Override
+            public void onChange(boolean selfChange, Uri uri) {
+                Log.i(TAG, "ADB_WIFI_ENABLED=" + isAdbWifiEnabled());
+                onWirelessDebuggingEnabled(isAdbWifiEnabled());
+            }
+        };
+    }
+
+    private boolean isAdbWifiEnabled() {
+        return Settings.Global.getInt(mContentResolver, Settings.Global.ADB_WIFI_ENABLED,
+                AdbPreferenceController.ADB_SETTING_OFF)
+                != AdbPreferenceController.ADB_SETTING_OFF;
+    }
+
+    /**
+     * Tears down the switch controller for the wireless debugging switch.
+     */
+    public void teardownSwitchController() {
+        if (mListeningToOnSwitchChange) {
+            mSwitchWidget.stopListening();
+            mListeningToOnSwitchChange = false;
+        }
+        mSwitchWidget.teardownView();
+    }
+
+    @Override
+    public void onResume() {
+        if (!mListeningToOnSwitchChange) {
+            mSwitchWidget.startListening();
+            mListeningToOnSwitchChange = true;
+        }
+        onWirelessDebuggingEnabled(isAdbWifiEnabled());
+        mContentResolver.registerContentObserver(
+                Settings.Global.getUriFor(Settings.Global.ADB_WIFI_ENABLED), false,
+                mSettingsObserver);
+    }
+
+    @Override
+    public void onPause() {
+        if (mListeningToOnSwitchChange) {
+            mSwitchWidget.stopListening();
+            mListeningToOnSwitchChange = false;
+        }
+        mContentResolver.unregisterContentObserver(mSettingsObserver);
+    }
+
+    private void onWirelessDebuggingEnabled(boolean enabled) {
+        mSwitchWidget.setChecked(enabled);
+        if (mListener != null) {
+            mListener.onEnabled(enabled);
+        }
+    }
+
+    protected void writeAdbWifiSetting(boolean enabled) {
+        Settings.Global.putInt(mContext.getContentResolver(),
+                Settings.Global.ADB_WIFI_ENABLED, enabled ? AdbPreferenceController.ADB_SETTING_ON
+                : AdbPreferenceController.ADB_SETTING_OFF);
+    }
+
+    @Override
+    public boolean onSwitchToggled(boolean isChecked) {
+        writeAdbWifiSetting(isChecked);
+        return true;
+    }
+
+    /**
+     * Interface for subscribers to implement in order to listen for
+     * wireless debugging state changes.
+     */
+    public interface OnEnabledListener {
+        /**
+         * Called when wireless debugging state changes.
+         *
+         * @param enabled the state of wireless debugging
+         */
+        void onEnabled(boolean enabled);
+    }
+}