[SB Refactor] Implement the wifi content description in the new

pipeline.

This is a re-implementation of the logic in:
 - WifiSignalController#notifyListenersForNonCarrierWifi
 - SignalController#getContentDescription

Bug: 238425913
Test: WifiViewModelTest
Test: manual: Logged content description and verified it matched old
system in variety of circumstances (full wifi, not full wifi, full wifi
that isn't connected yet, wifi off)

Change-Id: I4a730d117f497f4c608c73983122bc50f7065839

packages/SystemUI/src/com/android/systemui/statusbar/pipeline/wifi/ui/viewmodel/WifiViewModel.kt

@@ -16,8 +16,15 @@
 
 package com.android.systemui.statusbar.pipeline.wifi.ui.viewmodel
 
+import android.content.Context
 import android.graphics.Color
 import androidx.annotation.DrawableRes
+import androidx.annotation.StringRes
+import androidx.annotation.VisibleForTesting
+import com.android.settingslib.AccessibilityContentDescriptions.WIFI_CONNECTION_STRENGTH
+import com.android.settingslib.AccessibilityContentDescriptions.WIFI_NO_CONNECTION
+import com.android.systemui.R
+import com.android.systemui.common.shared.model.ContentDescription
 import com.android.systemui.common.shared.model.Icon
 import com.android.systemui.statusbar.connectivity.WifiIcons.WIFI_FULL_ICONS
 import com.android.systemui.statusbar.connectivity.WifiIcons.WIFI_NO_INTERNET_ICONS
@@ -41,6 +48,7 @@ import kotlinx.coroutines.flow.map
 class WifiViewModel @Inject constructor(
     statusBarPipelineFlags: StatusBarPipelineFlags,
     private val constants: WifiConstants,
+    private val context: Context,
     private val logger: ConnectivityPipelineLogger,
     private val interactor: WifiInteractor,
 ) {
@@ -61,19 +69,43 @@ class WifiViewModel @Inject constructor(
         }
     }
 
+    /** The content description for the wifi icon. */
+    private val contentDescription: Flow<ContentDescription?> = interactor.wifiNetwork.map {
+        when (it) {
+            is WifiNetworkModel.CarrierMerged -> null
+            is WifiNetworkModel.Inactive ->
+                ContentDescription.Loaded(
+                    "${context.getString(WIFI_NO_CONNECTION)},${context.getString(NO_INTERNET)}"
+                )
+            is WifiNetworkModel.Active ->
+                when (it.level) {
+                    null -> null
+                    else -> {
+                        val levelDesc = context.getString(WIFI_CONNECTION_STRENGTH[it.level])
+                        when {
+                            it.isValidated -> ContentDescription.Loaded(levelDesc)
+                            else -> ContentDescription.Loaded(
+                                "$levelDesc,${context.getString(NO_INTERNET)}"
+                            )
+                        }
+                    }
+                }
+        }
+    }
+
     /**
      * The wifi icon that should be displayed. Null if we shouldn't display any icon.
      */
     val wifiIcon: Flow<Icon?> = combine(
             interactor.isForceHidden,
-            iconResId
-        ) { isForceHidden, iconResId ->
+            iconResId,
+            contentDescription,
+        ) { isForceHidden, iconResId, contentDescription ->
             when {
                 isForceHidden ||
                     iconResId == null ||
                     iconResId <= 0 -> null
-                // TODO(b/238425913): Implement the content description.
-                else -> Icon.Resource(iconResId, /* contentDescription= */ null)
+                else -> Icon.Resource(iconResId, contentDescription)
             }
         }
 
@@ -95,4 +127,10 @@ class WifiViewModel @Inject constructor(
     } else {
         flowOf(Color.CYAN)
     }
+
+    companion object {
+        @StringRes
+        @VisibleForTesting
+        internal val NO_INTERNET = R.string.data_connection_no_internet
+    }
 }

packages/SystemUI/tests/src/com/android/systemui/statusbar/pipeline/wifi/ui/viewmodel/WifiViewModelTest.kt

@@ -17,7 +17,10 @@
 package com.android.systemui.statusbar.pipeline.wifi.ui.viewmodel
 
 import androidx.test.filters.SmallTest
+import com.android.settingslib.AccessibilityContentDescriptions.WIFI_CONNECTION_STRENGTH
+import com.android.settingslib.AccessibilityContentDescriptions.WIFI_NO_CONNECTION
 import com.android.systemui.SysuiTestCase
+import com.android.systemui.common.shared.model.ContentDescription
 import com.android.systemui.common.shared.model.Icon
 import com.android.systemui.statusbar.connectivity.WifiIcons.WIFI_FULL_ICONS
 import com.android.systemui.statusbar.connectivity.WifiIcons.WIFI_NO_INTERNET_ICONS
@@ -31,6 +34,7 @@ import com.android.systemui.statusbar.pipeline.wifi.data.model.WifiNetworkModel
 import com.android.systemui.statusbar.pipeline.wifi.data.repository.FakeWifiRepository
 import com.android.systemui.statusbar.pipeline.wifi.domain.interactor.WifiInteractor
 import com.android.systemui.statusbar.pipeline.wifi.shared.WifiConstants
+import com.android.systemui.statusbar.pipeline.wifi.ui.viewmodel.WifiViewModel.Companion.NO_INTERNET
 import com.google.common.truth.Truth.assertThat
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -67,6 +71,7 @@ class WifiViewModelTest : SysuiTestCase() {
         underTest = WifiViewModel(
             statusBarPipelineFlags,
             constants,
+            context,
             logger,
             interactor
         )
@@ -115,7 +120,12 @@ class WifiViewModelTest : SysuiTestCase() {
                 .launchIn(this)
 
         assertThat(latest).isInstanceOf(Icon.Resource::class.java)
-        assertThat((latest as Icon.Resource).res).isEqualTo(WIFI_NO_NETWORK)
+        val icon = latest as Icon.Resource
+        assertThat(icon.res).isEqualTo(WIFI_NO_NETWORK)
+        assertThat(icon.contentDescription?.getAsString())
+            .contains(context.getString(WIFI_NO_CONNECTION))
+        assertThat(icon.contentDescription?.getAsString())
+            .contains(context.getString(NO_INTERNET))
 
         job.cancel()
     }
@@ -169,7 +179,12 @@ class WifiViewModelTest : SysuiTestCase() {
             .launchIn(this)
 
         assertThat(latest).isInstanceOf(Icon.Resource::class.java)
-        assertThat((latest as Icon.Resource).res).isEqualTo(WIFI_FULL_ICONS[level])
+        val icon = latest as Icon.Resource
+        assertThat(icon.res).isEqualTo(WIFI_FULL_ICONS[level])
+        assertThat(icon.contentDescription?.getAsString())
+            .contains(context.getString(WIFI_CONNECTION_STRENGTH[level]))
+        assertThat(icon.contentDescription?.getAsString())
+            .doesNotContain(context.getString(NO_INTERNET))
 
         job.cancel()
     }
@@ -193,7 +208,12 @@ class WifiViewModelTest : SysuiTestCase() {
             .launchIn(this)
 
         assertThat(latest).isInstanceOf(Icon.Resource::class.java)
-        assertThat((latest as Icon.Resource).res).isEqualTo(WIFI_NO_INTERNET_ICONS[level])
+        val icon = latest as Icon.Resource
+        assertThat(icon.res).isEqualTo(WIFI_NO_INTERNET_ICONS[level])
+        assertThat(icon.contentDescription?.getAsString())
+            .contains(context.getString(WIFI_CONNECTION_STRENGTH[level]))
+        assertThat(icon.contentDescription?.getAsString())
+            .contains(context.getString(NO_INTERNET))
 
         job.cancel()
     }
@@ -261,6 +281,13 @@ class WifiViewModelTest : SysuiTestCase() {
         job.cancel()
     }
 
+    private fun ContentDescription.getAsString(): String? {
+        return when (this) {
+            is ContentDescription.Loaded -> this.description
+            is ContentDescription.Resource -> context.getString(this.res)
+        }
+    }
+
     companion object {
         private const val NETWORK_ID = 2
         private val ACTIVE_VALID_WIFI_NETWORK = WifiNetworkModel.Active(NETWORK_ID, ssid = "AB")