Add the confirm button on the get flow and remove the Sign in another way button if there’s no other entries to show in the next page

Screenshots:
1. When there's only one acount and no other entries: https://screenshot.googleplex.com/8u2u3WNbLe8AiS7
2. When there's only one account but other entries: https://screenshot.googleplex.com/937Ba2QdtFMrn9P
3. When there's multiple accounts: https://screenshot.googleplex.com/4uxuRuSTLP95Jui

Test: deployed locally

Bug: 264959820
Fix: 264959820

Change-Id: I6f6ef879a0ff4bd4f17da35f0300df75c09190b1

packages/CredentialManager/src/com/android/credentialmanager/getflow/GetCredentialComponents.kt

@@ -63,6 +63,7 @@ import com.android.credentialmanager.common.material.ModalBottomSheetLayout
 import com.android.credentialmanager.common.material.ModalBottomSheetValue
 import com.android.credentialmanager.common.material.rememberModalBottomSheetState
 import com.android.credentialmanager.common.ui.ActionButton
+import com.android.credentialmanager.common.ui.ConfirmButton
 import com.android.credentialmanager.common.ui.Entry
 import com.android.credentialmanager.common.ui.TextOnSurface
 import com.android.credentialmanager.common.ui.TextSecondary
@@ -95,7 +96,10 @@ fun GetCredentialScreen(
                         PrimarySelectionCard(
                             requestDisplayInfo = uiState.requestDisplayInfo,
                             providerDisplayInfo = uiState.providerDisplayInfo,
+                            providerInfoList = uiState.providerInfoList,
+                            activeEntry = uiState.activeEntry,
                             onEntrySelected = viewModel::onEntrySelected,
+                            onConfirm = viewModel::onConfirmEntrySelected,
                             onMoreOptionSelected = viewModel::onMoreOptionSelected,
                         )
                     } else {
@@ -133,7 +137,10 @@ fun GetCredentialScreen(
 fun PrimarySelectionCard(
     requestDisplayInfo: RequestDisplayInfo,
     providerDisplayInfo: ProviderDisplayInfo,
+    providerInfoList: List<ProviderInfo>,
+    activeEntry: EntryInfo?,
     onEntrySelected: (EntryInfo) -> Unit,
+    onConfirm: () -> Unit,
     onMoreOptionSelected: () -> Unit,
 ) {
     val sortedUserNameToCredentialEntryList =
@@ -217,13 +224,33 @@ fun PrimarySelectionCard(
                 thickness = 24.dp,
                 color = Color.Transparent
             )
+            var totalEntriesCount = sortedUserNameToCredentialEntryList
+                .flatMap{ it.sortedCredentialEntryList}.size + authenticationEntryList
+                .size + providerInfoList.flatMap { it.actionEntryList }.size
+            if (providerDisplayInfo.remoteEntry != null) totalEntriesCount += 1
+            // Row horizontalArrangement differs on only one actionButton(should place on most
+            // left)/only one confirmButton(should place on most right)/two buttons exist the same
+            // time(should be one on the left, one on the right)
             Row(
-                horizontalArrangement = Arrangement.SpaceBetween,
+                horizontalArrangement =
+                if (totalEntriesCount <= 1 && activeEntry != null) Arrangement.End
+                else if (totalEntriesCount > 1 && activeEntry == null) Arrangement.Start
+                else Arrangement.SpaceBetween,
                 modifier = Modifier.fillMaxWidth().padding(horizontal = 24.dp)
             ) {
-                ActionButton(
-                    stringResource(R.string.get_dialog_use_saved_passkey_for),
-                    onMoreOptionSelected)
+                if (totalEntriesCount > 1) {
+                    ActionButton(
+                        stringResource(R.string.get_dialog_use_saved_passkey_for),
+                        onMoreOptionSelected
+                    )
+                }
+                // Only one sign-in options exist
+                if (activeEntry != null) {
+                    ConfirmButton(
+                        stringResource(R.string.string_continue),
+                        onClick = onConfirm
+                    )
+                }
             }
             Divider(
                 thickness = 18.dp,

packages/CredentialManager/src/com/android/credentialmanager/getflow/GetCredentialViewModel.kt

@@ -41,6 +41,7 @@ data class GetCredentialUiState(
   val currentScreenState: GetScreenState = toGetScreenState(providerInfoList),
   val providerDisplayInfo: ProviderDisplayInfo = toProviderDisplayInfo(providerInfoList),
   val selectedEntry: EntryInfo? = null,
+  val activeEntry: EntryInfo? = toActiveEntry(providerDisplayInfo),
   val hidden: Boolean = false,
   val providerActivityPending: Boolean = false,
   val isNoAccount: Boolean = false,
@@ -73,6 +74,17 @@ class GetCredentialViewModel(private val credManRepo: CredentialManagerRepo) : V
     }
   }
 
+  fun onConfirmEntrySelected() {
+    val activeEntry = uiState.activeEntry
+    if (activeEntry != null) {
+      onEntrySelected(activeEntry)
+    } else {
+      Log.w("Account Selector",
+        "Illegal state: confirm is pressed but activeEntry isn't set.")
+      dialogResult.tryEmit(DialogResult(ResultState.COMPLETE))
+    }
+  }
+
   fun launchProviderUi(
     launcher: ManagedActivityResultLauncher<IntentSenderRequest, ActivityResult>
   ) {
@@ -198,6 +210,26 @@ private fun toProviderDisplayInfo(
   )
 }
 
+private fun toActiveEntry(
+  providerDisplayInfo: ProviderDisplayInfo,
+): EntryInfo? {
+  val sortedUserNameToCredentialEntryList =
+    providerDisplayInfo.sortedUserNameToCredentialEntryList
+  val authenticationEntryList = providerDisplayInfo.authenticationEntryList
+  var activeEntry: EntryInfo? = null
+  if (sortedUserNameToCredentialEntryList
+      .size == 1 && authenticationEntryList.isEmpty()
+  ) {
+    activeEntry = sortedUserNameToCredentialEntryList.first().sortedCredentialEntryList.first()
+  } else if (
+    sortedUserNameToCredentialEntryList
+      .isEmpty() && authenticationEntryList.size == 1
+  ) {
+    activeEntry = authenticationEntryList.first()
+  }
+  return activeEntry
+}
+
 private fun toGetScreenState(
   providerInfoList: List<ProviderInfo>
 ): GetScreenState {