Add Wifi Slice

Add a custom Wifi Slice to the Settings Slice Provider.
It needs a custom Slice because of the complicated listener logic
in the MasterSwitchPreferenceController, which makes it hard to
work-in synchronous set/get logic.

The one-off Slice requires extra changes, including:
- Including it in getDescendants
- Handling changes to wifi by the framework

This is the first change that uses SettingsLib's broadcast relay,
which allows settings to (un)register IntentFilters to a Uri,
allowing Settings Slices affected by the framework (quicksettings,
connectivity related, volume, etc) to be updated without action
on the Slice.

Bug: 70622039
Bug: 67997332
Test: robotests
Change-Id: Ibfe4736beecb833e3f6bb871b2eb5228a5fd3a34

tests/robotests/src/com/android/settings/wifi/WifiSliceBuilderTest.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2018 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 static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+import android.content.Context;
+
+import com.android.settings.R;
+import com.android.settings.wifi.WifiSliceBuilder;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.SliceTester;
+
+import android.content.Intent;
+import android.content.res.Resources;
+import android.net.wifi.WifiManager;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+
+import java.util.List;
+
+import androidx.core.graphics.drawable.IconCompat;
+import androidx.slice.Slice;
+import androidx.slice.SliceItem;
+import androidx.slice.SliceMetadata;
+import androidx.slice.SliceProvider;
+import androidx.slice.core.SliceAction;
+import androidx.slice.widget.SliceLiveData;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class WifiSliceBuilderTest {
+
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        mContext = spy(RuntimeEnvironment.application);
+
+        // Prevent crash in SliceMetadata.
+        Resources resources = spy(mContext.getResources());
+        doReturn(60).when(resources).getDimensionPixelSize(anyInt());
+        doReturn(resources).when(mContext).getResources();
+
+        // Set-up specs for SliceMetadata.
+        SliceProvider.setSpecs(SliceLiveData.SUPPORTED_SPECS);
+    }
+
+    @Test
+    public void getWifiSlice_correctData() {
+        final Slice wifiSlice = WifiSliceBuilder.getSlice(mContext);
+        final SliceMetadata metadata = SliceMetadata.from(mContext, wifiSlice);
+
+
+        final List<SliceAction> toggles = metadata.getToggles();
+        assertThat(toggles).hasSize(1);
+
+        final SliceAction primaryAction = metadata.getPrimaryAction();
+        final IconCompat expectedToggleIcon = IconCompat.createWithResource(mContext,
+                R.drawable.ic_settings_wireless);
+        assertThat(primaryAction.getIcon().toString()).isEqualTo(expectedToggleIcon.toString());
+
+        final List<SliceItem> sliceItems = wifiSlice.getItems();
+        SliceTester.assertTitle(sliceItems, mContext.getString(R.string.wifi_settings));
+    }
+
+    @Test
+    public void handleUriChange_updatesWifi() {
+        final Intent intent = new Intent(WifiSliceBuilder.ACTION_WIFI_SLICE_CHANGED);
+        intent.putExtra(android.app.slice.Slice.EXTRA_TOGGLE_STATE, true);
+        final WifiManager wifiManager = mContext.getSystemService(WifiManager.class);
+
+        WifiSliceBuilder.handleUriChange(mContext, intent);
+
+        assertThat(wifiManager.getWifiState()).isEqualTo(WifiManager.WIFI_STATE_ENABLED);
+    }
+}