[#49] Implement copy to clipboard

ui-lib/src/androidTest/java/cash/z/ecc/ui/screen/backup/view/BackupViewTest.kt

@@ -34,6 +34,7 @@ class BackupViewTest {
 
         assertEquals(BackupStage.EducationOverview, testSetup.getStage())
         assertEquals(0, testSetup.getOnCompleteCallbackCount())
+        assertEquals(0, testSetup.getOnCopyToClipboardCount())
     }
 
     @Test
@@ -43,6 +44,19 @@ class BackupViewTest {
 
         assertEquals(BackupStage.Complete, testSetup.getStage())
         assertEquals(0, testSetup.getOnCompleteCallbackCount())
+        assertEquals(0, testSetup.getOnCopyToClipboardCount())
+    }
+
+    @Test
+    @MediumTest
+    fun copy_to_clipboard() {
+        val testSetup = newTestSetup(BackupStage.Seed)
+
+        composeTestRule.onNodeWithText(getStringResource(R.string.new_wallet_3_button_copy)).also {
+            it.performClick()
+        }
+
+        assertEquals(1, testSetup.getOnCopyToClipboardCount())
     }
 
     @Test
@@ -107,6 +121,7 @@ class BackupViewTest {
         val goToWalletButton = composeTestRule.onNodeWithText(getStringResource(R.string.new_wallet_5_button_finished))
         goToWalletButton.performClick()
 
+        assertEquals(0, testSetup.getOnCopyToClipboardCount())
         assertEquals(1, testSetup.getOnCompleteCallbackCount())
     }
 
@@ -118,6 +133,7 @@ class BackupViewTest {
         val newWalletButton = composeTestRule.onNodeWithText(getStringResource(R.string.new_wallet_5_button_back))
         newWalletButton.performClick()
 
+        assertEquals(0, testSetup.getOnCopyToClipboardCount())
         assertEquals(0, testSetup.getOnCompleteCallbackCount())
         assertEquals(BackupStage.Seed, testSetup.getStage())
     }
@@ -139,6 +155,12 @@ class BackupViewTest {
 
         assertEquals(BackupStage.Seed, testSetup.getStage())
 
+        composeTestRule.onNodeWithText(getStringResource(R.string.new_wallet_3_button_copy)).also {
+            it.performClick()
+        }
+
+        assertEquals(1, testSetup.getOnCopyToClipboardCount())
+
         composeTestRule.onNodeWithText(getStringResource(R.string.new_wallet_3_button_finished)).also {
             it.performClick()
         }
@@ -173,8 +195,15 @@ class BackupViewTest {
     private class TestSetup(private val composeTestRule: ComposeContentTestRule, initalStage: BackupStage) {
         private val state = BackupState(initalStage)
 
+        private var onCopyToClipboardCount = 0
+
         private var onCompleteCallbackCount = 0
 
+        fun getOnCopyToClipboardCount(): Int {
+            composeTestRule.waitForIdle()
+            return onCopyToClipboardCount
+        }
+
         fun getOnCompleteCallbackCount(): Int {
             composeTestRule.waitForIdle()
             return onCompleteCallbackCount
@@ -192,6 +221,7 @@ class BackupViewTest {
                         PersistableWalletFixture.new(),
                         state,
                         TestChoices(),
+                        onCopyToClipboard = { onCopyToClipboardCount++ },
                         onComplete = { onCompleteCallbackCount++ }
                     )
                 }

ui-lib/src/main/java/cash/z/ecc/ui/MainActivity.kt

@@ -1,5 +1,7 @@
 package cash.z.ecc.ui
 
+import android.content.ClipData
+import android.content.ClipboardManager
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
@@ -41,9 +43,19 @@ class MainActivity : ComponentActivity() {
 
     @Composable
     private fun WrapBackup(persistableWallet: PersistableWallet) {
-        BackupWallet(persistableWallet, backupViewModel.backupState, backupViewModel.testChoices) {
+        BackupWallet(
+            persistableWallet, backupViewModel.backupState, backupViewModel.testChoices,
+            onCopyToClipboard = {
+                val clipboardManager = getSystemService(ClipboardManager::class.java)
+                val data = ClipData.newPlainText(
+                    getString(R.string.new_wallet_clipboard_tag),
+                    persistableWallet.seedPhrase.phrase
+                )
+                clipboardManager.setPrimaryClip(data)
+            }, onComplete = {
             walletViewModel.persistBackupComplete()
         }
+        )
     }
 
     @Composable

ui-lib/src/main/java/cash/z/ecc/ui/screen/backup/view/BackupView.kt

@@ -42,6 +42,7 @@ fun ComposablePreview() {
             PersistableWalletFixture.new(),
             BackupState(BackupStage.Test),
             TestChoices(),
+            onCopyToClipboard = {},
             onComplete = {}
         )
     }
@@ -55,6 +56,7 @@ fun BackupWallet(
     wallet: PersistableWallet,
     backupState: BackupState,
     selectedTestChoices: TestChoices,
+    onCopyToClipboard: () -> Unit,
     onComplete: () -> Unit,
 ) {
     Surface {
@@ -63,10 +65,9 @@ fun BackupWallet(
                 BackupStage.EducationOverview -> EducationOverview(onNext = backupState::goNext)
                 BackupStage.EducationRecoveryPhrase -> EducationRecoveryPhrase(onNext = backupState::goNext)
                 BackupStage.Seed -> SeedPhrase(
-                    wallet, onNext = backupState::goNext,
-                    onCopyToClipboard = {
-                        // TODO [#49]
-                    }
+                    wallet,
+                    onNext = backupState::goNext,
+                    onCopyToClipboard = onCopyToClipboard
                 )
                 BackupStage.Test -> Test(
                     wallet,

ui-lib/src/main/res/ui/backup/values/strings.xml

@@ -1,4 +1,6 @@
 <resources>
+    <string name="new_wallet_clipboard_tag">Zcash Seed Phrase</string>
+
     <string name="new_wallet_1_header">First things first</string>
     <string name="new_wallet_1_body_1">It is important to understand that you are in charge here. Great, right? YOU get to be the bank!</string>
     <string name="new_wallet_1_body_2">But it also means that YOU are the customer, and you need to be self-reliant.\n\nSo how do you recover funds that you‘ve hidden on a complete decentralized and private block-chain?</string>