[#1206] Clear focus on Send Form

* [#1206] Clear focus on Send Form

- Closes #1206

ui-lib/src/androidTest/java/co/electriccoin/zcash/ui/screen/send/SendViewTestSetup.kt

@@ -4,6 +4,7 @@ import androidx.activity.compose.BackHandler
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.test.junit4.ComposeContentTestRule
 import cash.z.ecc.android.sdk.model.WalletBalance
 import cash.z.ecc.android.sdk.model.Zatoshi
@@ -105,6 +106,7 @@ class SendViewTestSetup(
                                 available = Zatoshi(Zatoshi.MAX_INCLUSIVE.div(100))
                             )
                     ),
+                focusManager = LocalFocusManager.current,
                 sendStage = sendStage,
                 sendArgumentsWrapper = initialSendArgumentWrapper,
                 onSendStageChange = setSendStage,

ui-lib/src/androidTest/java/co/electriccoin/zcash/ui/screen/send/integration/SendViewIntegrationTest.kt

@@ -1,5 +1,6 @@
 package co.electriccoin.zcash.ui.screen.send.integration
 
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.test.assertTextEquals
 import androidx.compose.ui.test.junit4.StateRestorationTester
 import androidx.compose.ui.test.junit4.createComposeRule
@@ -61,6 +62,7 @@ class SendViewIntegrationTest {
         restorationTester.setContent {
             WrapSend(
                 sendArgumentsWrapper = null,
+                focusManager = LocalFocusManager.current,
                 synchronizer = synchronizer,
                 walletSnapshot = walletSnapshot,
                 spendingKey = spendingKey,

ui-lib/src/main/java/co/electriccoin/zcash/ui/screen/home/view/HomeView.kt

@@ -132,7 +132,7 @@ fun Home(
             )
             TabRow(
                 selectedTabIndex = pagerState.currentPage,
-                // Don't use the predefined divider, as it's fixed position is below the tabs bar
+                // Don't use the predefined divider, as its fixed position is below the tabs bar
                 divider = {},
                 indicator = { tabPositions ->
                     TabRowDefaults.Indicator(

ui-lib/src/main/java/co/electriccoin/zcash/ui/screen/send/AndroidSend.kt

@@ -11,6 +11,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.ui.focus.FocusManager
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import cash.z.ecc.android.sdk.Synchronizer
 import cash.z.ecc.android.sdk.model.UnifiedSpendingKey
@@ -18,8 +20,10 @@ import cash.z.ecc.android.sdk.model.ZecSend
 import cash.z.ecc.sdk.extension.send
 import co.electriccoin.zcash.spackle.Twig
 import co.electriccoin.zcash.ui.common.model.WalletSnapshot
+import co.electriccoin.zcash.ui.common.viewmodel.HomeViewModel
 import co.electriccoin.zcash.ui.common.viewmodel.WalletViewModel
 import co.electriccoin.zcash.ui.design.component.CircularScreenProgressIndicator
+import co.electriccoin.zcash.ui.screen.home.HomeScreenIndex
 import co.electriccoin.zcash.ui.screen.send.ext.Saver
 import co.electriccoin.zcash.ui.screen.send.model.SendArgumentsWrapper
 import co.electriccoin.zcash.ui.screen.send.model.SendStage
@@ -46,11 +50,21 @@ internal fun WrapSend(
 
     val spendingKey = walletViewModel.spendingKey.collectAsStateWithLifecycle().value
 
+    val homeViewModel by activity.viewModels<HomeViewModel>()
+
+    val focusManager = LocalFocusManager.current
+
+    if (homeViewModel.screenIndex.collectAsStateWithLifecycle().value != HomeScreenIndex.SEND) {
+        // Clear focus on Send Form text fields
+        focusManager.clearFocus(true)
+    }
+
     WrapSend(
         sendArgumentsWrapper,
         synchronizer,
         walletSnapshot,
         spendingKey,
+        focusManager,
         goToQrScanner,
         goBack,
         goBalances,
@@ -67,6 +81,7 @@ internal fun WrapSend(
     synchronizer: Synchronizer?,
     walletSnapshot: WalletSnapshot?,
     spendingKey: UnifiedSpendingKey?,
+    focusManager: FocusManager,
     goToQrScanner: () -> Unit,
     goBack: () -> Unit,
     goBalances: () -> Unit,
@@ -116,6 +131,7 @@ internal fun WrapSend(
             onSendStageChange = setSendStage,
             zecSend = zecSend,
             onZecSendChange = setZecSend,
+            focusManager = focusManager,
             onBack = onBackAction,
             onSettings = goSettings,
             onCreateAndSend = {

ui-lib/src/main/java/co/electriccoin/zcash/ui/screen/send/view/SendView.kt

@@ -29,6 +29,7 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.focus.FocusDirection
+import androidx.compose.ui.focus.FocusManager
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.platform.testTag
@@ -84,6 +85,7 @@ private fun PreviewSendForm() {
         GradientSurface {
             Send(
                 walletSnapshot = WalletSnapshotFixture.new(),
+                focusManager = LocalFocusManager.current,
                 sendArgumentsWrapper = null,
                 sendStage = SendStage.Form,
                 onSendStageChange = {},
@@ -164,6 +166,7 @@ fun Send(
     onSendStageChange: (SendStage) -> Unit,
     zecSend: ZecSend?,
     onZecSendChange: (ZecSend) -> Unit,
+    focusManager: FocusManager,
     onBack: () -> Unit,
     onSettings: () -> Unit,
     onCreateAndSend: (ZecSend) -> Unit,
@@ -182,6 +185,7 @@ fun Send(
             walletSnapshot = walletSnapshot,
             sendArgumentsWrapper = sendArgumentsWrapper,
             onBack = onBack,
+            focusManager = focusManager,
             sendStage = sendStage,
             onSendStageChange = onSendStageChange,
             zecSend = zecSend,
@@ -236,6 +240,7 @@ private fun SendTopAppBar(
 @Composable
 private fun SendMainContent(
     walletSnapshot: WalletSnapshot,
+    focusManager: FocusManager,
     sendArgumentsWrapper: SendArgumentsWrapper?,
     zecSend: ZecSend?,
     onZecSendChange: (ZecSend) -> Unit,
@@ -258,6 +263,7 @@ private fun SendMainContent(
                     onSendStageChange(SendStage.Confirmation)
                     onZecSendChange(it)
                 },
+                focusManager = focusManager,
                 onQrScannerOpen = onQrScannerOpen,
                 goBalances = goBalances,
                 hasCameraFeature = hasCameraFeature,
@@ -306,6 +312,7 @@ private fun SendMainContent(
 @Composable
 private fun SendForm(
     walletSnapshot: WalletSnapshot,
+    focusManager: FocusManager,
     sendArgumentsWrapper: SendArgumentsWrapper?,
     previousZecSend: ZecSend?,
     onCreateZecSend: (ZecSend) -> Unit,
@@ -319,7 +326,6 @@ private fun SendForm(
     // TODO [#1171]: https://github.com/Electric-Coin-Company/zashi-android/issues/1171
     val monetarySeparators = MonetarySeparators.current(Locale.US)
     val allowedCharacters = ZecString.allowedCharacters(monetarySeparators)
-    val focusManager = LocalFocusManager.current
 
     // TODO [#809]: Fix ZEC balance on Send screen
     // TODO [#809]: https://github.com/Electric-Coin-Company/zashi-android/issues/809