Convert location settings to DashboardFragment.

- change LocationMode, LocationSettings, and ScanningSettings to be
DashboardFragment.
- remove LocationSettingsBase and moved base logics into base
controller.
- add controllers for the preferences under the 3 location settings
pages.

Fixes: 68719207
Test: make RunSettingsRoboTests
Change-Id: Icedf691c2a9f7989faebee39ea9da672209b7957

src/com/android/settings/location/LocationModeRadioButtonPreferenceController.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2017 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.location;
+
+import android.content.Context;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.widget.RadioButtonPreference;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+public abstract class LocationModeRadioButtonPreferenceController
+        extends LocationBasePreferenceController
+        implements RadioButtonPreference.OnClickListener {
+
+    protected RadioButtonPreference mPreference;
+
+    public LocationModeRadioButtonPreferenceController(Context context, Lifecycle lifecycle) {
+        super(context, lifecycle);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = (RadioButtonPreference) screen.findPreference(getPreferenceKey());
+        mPreference.setOnClickListener(this);
+    }
+
+    @Override
+    public void onRadioButtonClicked(RadioButtonPreference emiter) {
+        mLocationEnabler.setLocationMode(getLocationMode());
+    }
+
+    @Override
+    public void onLocationModeChanged(int mode, boolean restricted) {
+        mPreference.setChecked(mode == getLocationMode());
+        mPreference.setEnabled(mLocationEnabler.isEnabled(mode));
+    }
+
+    /** Gets the location mode that this controller monitors. */
+    protected abstract int getLocationMode();
+
+}