Adds send tab functionality to UI (#2790)

* Closes #2782: Hide send tab when no devices available

* For #2752: Enabled send tab for debug and nightly builds

* For #2753: Add Send Tab functionality to UI

app/build.gradle

@@ -241,7 +241,7 @@ android.applicationVariants.all { variant ->
 // -------------------------------------------------------------------------------------------------
 // Feature build flags
 // -------------------------------------------------------------------------------------------------
-    buildConfigField 'Boolean', 'SEND_TAB_ENABLED', "false"
+    buildConfigField 'Boolean', 'SEND_TAB_ENABLED', (buildType == "nightly" || !isReleased).toString()
 }
 
 androidExtensions {

app/src/main/java/org/mozilla/fenix/share/AccountDevicesShareView.kt

@@ -60,13 +60,14 @@ class AccountDevicesShareAdapter(
             return list
         }
 
-        list.add(SyncShareOption.AddNewDevice)
-
         accountManager.authenticatedAccount()?.deviceConstellation()?.state()?.otherDevices?.let { devices ->
-            val shareableDevices = devices
-                .filter {
-                    it.capabilities.contains(DeviceCapability.SEND_TAB)
-                }
+            val shareableDevices = devices.filter { it.capabilities.contains(DeviceCapability.SEND_TAB) }
+
+            if (shareableDevices.isEmpty()) {
+                list.add(SyncShareOption.AddNewDevice)
+                actionEmitter.onNext(ShareAction.HideSendTab)
+            }
+
             val shareOptions = shareableDevices.map {
                 when (it.deviceType) {
                     DeviceType.MOBILE -> SyncShareOption.Mobile(it.displayName, it)

app/src/main/java/org/mozilla/fenix/share/ShareComponent.kt

@@ -23,6 +23,7 @@ sealed class ShareAction : Action {
     object Close : ShareAction()
     object SignInClicked : ShareAction()
     object AddNewDeviceClicked : ShareAction()
+    object HideSendTab : ShareAction()
     data class ShareDeviceClicked(val device: Device) : ShareAction()
     data class SendAllClicked(val devices: List<Device>) : ShareAction()
     data class ShareAppClicked(val packageName: String) : ShareAction()

app/src/main/java/org/mozilla/fenix/share/ShareFragment.kt

@@ -12,11 +12,14 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.fragment.app.DialogFragment
+import androidx.appcompat.app.AppCompatDialogFragment
+import androidx.navigation.fragment.NavHostFragment.findNavController
+import kotlinx.android.synthetic.main.component_share.*
 import kotlinx.android.synthetic.main.fragment_share.view.*
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
+import mozilla.components.concept.sync.DeviceEventOutgoing
 import org.mozilla.fenix.FenixViewModelProvider
 import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.requireComponents
@@ -24,12 +27,13 @@ import org.mozilla.fenix.mvi.ActionBusFactory
 import org.mozilla.fenix.mvi.getAutoDisposeObservable
 import kotlin.coroutines.CoroutineContext
 
-class ShareFragment : DialogFragment(), CoroutineScope {
+class ShareFragment : AppCompatDialogFragment(), CoroutineScope {
     override val coroutineContext: CoroutineContext
         get() = Dispatchers.Main + job
     private lateinit var job: Job
     private lateinit var component: ShareComponent
     private lateinit var url: String
+    private lateinit var title: String
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -42,6 +46,7 @@ class ShareFragment : DialogFragment(), CoroutineScope {
 
         job = Job()
         url = args.url
+        title = args.title ?: ""
         component = ShareComponent(
             view.share_wrapper,
             ActionBusFactory.get(this),
@@ -66,15 +71,43 @@ class ShareFragment : DialogFragment(), CoroutineScope {
         job.cancel()
     }
 
+    @SuppressWarnings("ComplexMethod")
     private fun subscribeToActions() {
         getAutoDisposeObservable<ShareAction>().subscribe {
             when (it) {
                 ShareAction.Close -> {
                     dismiss()
                 }
+                ShareAction.SignInClicked -> {
+                    val directions = ShareFragmentDirections.actionShareFragmentToTurnOnSyncFragment()
+                    findNavController(this@ShareFragment).navigate(directions)
+                }
                 ShareAction.AddNewDeviceClicked -> {
                     requireComponents.useCases.tabsUseCases.addTab.invoke(ADD_NEW_DEVICES_URL, true)
                 }
+                ShareAction.HideSendTab -> {
+                    send_tab_group.visibility = View.GONE
+                }
+                is ShareAction.ShareDeviceClicked -> {
+                    val authAccount = requireComponents.backgroundServices.accountManager.authenticatedAccount()
+                    authAccount?.run {
+                        deviceConstellation().sendEventToDeviceAsync(
+                            it.device.id,
+                            DeviceEventOutgoing.SendTab(title, url)
+                        )
+                    }
+                }
+                is ShareAction.SendAllClicked -> {
+                    val authAccount = requireComponents.backgroundServices.accountManager.authenticatedAccount()
+                    authAccount?.run {
+                        it.devices.forEach { device ->
+                            deviceConstellation().sendEventToDeviceAsync(
+                                device.id,
+                                DeviceEventOutgoing.SendTab(title, url)
+                            )
+                        }
+                    }
+                }
                 is ShareAction.ShareAppClicked -> {
                     val intent = Intent(ACTION_SEND).apply {
                         putExtra(EXTRA_TEXT, url)
@@ -84,13 +117,13 @@ class ShareFragment : DialogFragment(), CoroutineScope {
                     }
                     startActivity(intent)
                 }
-                // TODO support other actions in a follow-up issue
             }
             dismiss()
         }
     }
 
     companion object {
+        // TODO Replace this link with the correct one when provided.
         const val ADD_NEW_DEVICES_URL = "https://accounts.firefox.com/connect_another_device"
     }
 }

app/src/main/res/layout/account_share_list_item.xml

@@ -17,6 +17,8 @@
         android:importantForAccessibility="no"
         android:layout_marginTop="8dp"
         android:background="@drawable/device_background"
+        android:clickable="false"
+        android:focusable="false"
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"

app/src/main/res/navigation/nav_graph.xml

@@ -395,6 +395,16 @@
         <argument
             android:name="url"
             app:argType="string" />
+        <argument
+            android:name="title"
+            android:defaultValue="@null"
+            app:argType="string"
+            app:nullable="true" />
+        <action
+            android:id="@+id/action_shareFragment_to_turnOnSyncFragment"
+            app:destination="@+id/turnOnSyncFragment"
+            app:popUpTo="@id/shareFragment"
+            app:popUpToInclusive="true" />
     </dialog>
     <dialog
         android:id="@+id/quickSettingsSheetDialogFragment"