Remove listener use fragmentCallback

vector/src/main/java/im/vector/app/features/home/HomeActivity.kt

@@ -27,6 +27,8 @@ import android.view.MenuItem
 import androidx.core.view.GravityCompat
 import androidx.core.view.isVisible
 import androidx.drawerlayout.widget.DrawerLayout
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentManager
 import com.airbnb.mvrx.MvRx
 import com.airbnb.mvrx.viewModel
 import com.google.android.material.appbar.MaterialToolbar
@@ -93,7 +95,8 @@ class HomeActivity :
         UnreadMessagesSharedViewModel.Factory,
         PromoteRestrictedViewModel.Factory,
         NavigationInterceptor,
-        SpaceInviteBottomSheet.InteractionListener {
+        SpaceInviteBottomSheet.InteractionListener,
+        MatrixToBottomSheet.InteractionListener {
 
     private lateinit var sharedActionViewModel: HomeSharedActionViewModel
 
@@ -142,6 +145,22 @@ class HomeActivity :
         }
     }
 
+    private val fragmentLifecycleCallbacks = object : FragmentManager.FragmentLifecycleCallbacks() {
+        override fun onFragmentResumed(fm: FragmentManager, f: Fragment) {
+            if (f is MatrixToBottomSheet) {
+                f.interactionListener = this@HomeActivity
+            }
+            super.onFragmentResumed(fm, f)
+        }
+
+        override fun onFragmentPaused(fm: FragmentManager, f: Fragment) {
+            if (f is MatrixToBottomSheet) {
+                f.interactionListener = null
+            }
+            super.onFragmentPaused(fm, f)
+        }
+    }
+
     private val drawerListener = object : DrawerLayout.SimpleDrawerListener() {
         override fun onDrawerStateChanged(newState: Int) {
             hideKeyboard()
@@ -170,6 +189,7 @@ class HomeActivity :
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        supportFragmentManager.registerFragmentLifecycleCallbacks(fragmentLifecycleCallbacks, false)
         FcmHelper.ensureFcmTokenIsRetrieved(this, pushManager, vectorPreferences.areNotificationEnabledForDevice())
         sharedActionViewModel = viewModelProvider.get(HomeSharedActionViewModel::class.java)
         views.drawerLayout.addDrawerListener(drawerListener)
@@ -445,6 +465,7 @@ class HomeActivity :
 
     override fun onDestroy() {
         views.drawerLayout.removeDrawerListener(drawerListener)
+        supportFragmentManager.unregisterFragmentLifecycleCallbacks(fragmentLifecycleCallbacks)
         super.onDestroy()
     }
 
@@ -526,30 +547,15 @@ class HomeActivity :
     }
 
     override fun navToMemberProfile(userId: String, deepLink: Uri): Boolean {
-        val listener = object : MatrixToBottomSheet.InteractionListener {
-            override fun navigateToRoom(roomId: String) {
-                navigator.openRoom(this@HomeActivity, roomId)
-            }
-        }
         // TODO check if there is already one??
-        MatrixToBottomSheet.withLink(deepLink.toString(), listener)
+        MatrixToBottomSheet.withLink(deepLink.toString())
                 .show(supportFragmentManager, "HA#MatrixToBottomSheet")
         return true
     }
 
     override fun navToRoom(roomId: String?, eventId: String?, deepLink: Uri?): Boolean {
         if (roomId == null) return false
-        val listener = object : MatrixToBottomSheet.InteractionListener {
+        MatrixToBottomSheet.withLink(deepLink.toString())
-            override fun navigateToRoom(roomId: String) {
-                navigator.openRoom(this@HomeActivity, roomId)
-            }
-
-            override fun switchToSpace(spaceId: String) {
-                navigator.switchToSpace(this@HomeActivity, spaceId, Navigator.PostSwitchSpaceAction.None)
-            }
-        }
-
-        MatrixToBottomSheet.withLink(deepLink.toString(), listener)
                 .show(supportFragmentManager, "HA#MatrixToBottomSheet")
         return true
     }
@@ -586,4 +592,12 @@ class HomeActivity :
     }
 
     override fun create(initialState: ActiveSpaceViewState) = promoteRestrictedViewModelFactory.create(initialState)
+
+    override fun mxToBottomSheetNavigateToRoom(roomId: String) {
+        navigator.openRoom(this, roomId)
+    }
+
+    override fun mxToBottomSheetSwitchToSpace(spaceId: String) {
+        navigator.switchToSpace(this, spaceId, Navigator.PostSwitchSpaceAction.None)
+    }
 }

vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailActivity.kt

@@ -20,10 +20,12 @@ import android.content.Context
 import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
-import com.google.android.material.appbar.MaterialToolbar
 import androidx.core.view.GravityCompat
 import androidx.drawerlayout.widget.DrawerLayout
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentManager
 import com.airbnb.mvrx.viewModel
+import com.google.android.material.appbar.MaterialToolbar
 import im.vector.app.R
 import im.vector.app.core.di.ScreenComponent
 import im.vector.app.core.extensions.hideKeyboard
@@ -32,25 +34,44 @@ import im.vector.app.core.platform.ToolbarConfigurable
 import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.databinding.ActivityRoomDetailBinding
 import im.vector.app.features.home.room.breadcrumbs.BreadcrumbsFragment
+import im.vector.app.features.matrixto.MatrixToBottomSheet
+import im.vector.app.features.navigation.Navigator
 import im.vector.app.features.room.RequireActiveMembershipAction
 import im.vector.app.features.room.RequireActiveMembershipViewEvents
 import im.vector.app.features.room.RequireActiveMembershipViewModel
 import im.vector.app.features.room.RequireActiveMembershipViewState
 import im.vector.app.features.widgets.permissions.RoomWidgetPermissionViewModel
 import im.vector.app.features.widgets.permissions.RoomWidgetPermissionViewState
-
 import javax.inject.Inject
 
 class RoomDetailActivity :
         VectorBaseActivity<ActivityRoomDetailBinding>(),
         ToolbarConfigurable,
         RequireActiveMembershipViewModel.Factory,
-        RoomWidgetPermissionViewModel.Factory {
+        RoomWidgetPermissionViewModel.Factory,
+        MatrixToBottomSheet.InteractionListener {
 
     override fun getBinding(): ActivityRoomDetailBinding {
         return ActivityRoomDetailBinding.inflate(layoutInflater)
     }
 
+    private val fragmentLifecycleCallbacks = object : FragmentManager.FragmentLifecycleCallbacks() {
+
+        override fun onFragmentResumed(fm: FragmentManager, f: Fragment) {
+            if (f is MatrixToBottomSheet) {
+                f.interactionListener = this@RoomDetailActivity
+            }
+            super.onFragmentResumed(fm, f)
+        }
+
+        override fun onFragmentPaused(fm: FragmentManager, f: Fragment) {
+            if (f is MatrixToBottomSheet) {
+                f.interactionListener = null
+            }
+            super.onFragmentPaused(fm, f)
+        }
+    }
+
     override fun getCoordinatorLayout() = views.coordinatorLayout
 
     private lateinit var sharedActionViewModel: RoomDetailSharedActionViewModel
@@ -79,6 +100,7 @@ class RoomDetailActivity :
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        supportFragmentManager.registerFragmentLifecycleCallbacks(fragmentLifecycleCallbacks, false)
         waitingView = views.waitingView.waitingView
         val roomDetailArgs: RoomDetailArgs? = if (intent?.action == ACTION_ROOM_DETAILS_FROM_SHORTCUT) {
             RoomDetailArgs(roomId = intent?.extras?.getString(EXTRA_ROOM_ID)!!)
@@ -130,6 +152,7 @@ class RoomDetailActivity :
     }
 
     override fun onDestroy() {
+        supportFragmentManager.unregisterFragmentLifecycleCallbacks(fragmentLifecycleCallbacks)
         views.drawerLayout.removeDrawerListener(drawerListener)
         super.onDestroy()
     }
@@ -182,4 +205,12 @@ class RoomDetailActivity :
             }
         }
     }
+
+    override fun mxToBottomSheetNavigateToRoom(roomId: String) {
+        navigator.openRoom(this, roomId)
+    }
+
+    override fun mxToBottomSheetSwitchToSpace(spaceId: String) {
+        navigator.switchToSpace(this, spaceId, Navigator.PostSwitchSpaceAction.None)
+    }
 }

vector/src/main/java/im/vector/app/features/matrixto/MatrixToBottomSheet.kt

@@ -65,13 +65,8 @@ class MatrixToBottomSheet :
     private val viewModel by fragmentViewModel(MatrixToBottomSheetViewModel::class)
 
     interface InteractionListener {
-        fun navigateToRoom(roomId: String)
+        fun mxToBottomSheetNavigateToRoom(roomId: String)
-        fun switchToSpace(spaceId: String) {}
+        fun mxToBottomSheetSwitchToSpace(spaceId: String)
-    }
-
-    override fun onDestroyView() {
-        interactionListener = null
-        super.onDestroyView()
     }
 
     override fun invalidate() = withState(viewModel) { state ->
@@ -110,12 +105,12 @@ class MatrixToBottomSheet :
         viewModel.observeViewEvents {
             when (it) {
                 is MatrixToViewEvents.NavigateToRoom -> {
-                    interactionListener?.navigateToRoom(it.roomId)
+                    interactionListener?.mxToBottomSheetNavigateToRoom(it.roomId)
                     dismiss()
                 }
                 MatrixToViewEvents.Dismiss -> dismiss()
                 is MatrixToViewEvents.NavigateToSpace -> {
-                    interactionListener?.switchToSpace(it.spaceId)
+                    interactionListener?.mxToBottomSheetSwitchToSpace(it.spaceId)
                     dismiss()
                 }
                 is MatrixToViewEvents.ShowModalError -> {
@@ -129,14 +124,13 @@ class MatrixToBottomSheet :
     }
 
     companion object {
-        fun withLink(matrixToLink: String, listener: InteractionListener?): MatrixToBottomSheet {
+        fun withLink(matrixToLink: String): MatrixToBottomSheet {
             return MatrixToBottomSheet().apply {
                 arguments = Bundle().apply {
                     putParcelable(MvRx.KEY_ARG, MatrixToArgs(
                             matrixToLink = matrixToLink
                     ))
                 }
-                interactionListener = listener
             }
         }
     }

vector/src/main/java/im/vector/app/features/navigation/DefaultNavigator.kt

@@ -257,17 +257,11 @@ class DefaultNavigator @Inject constructor(
 
     override fun openMatrixToBottomSheet(context: Context, link: String) {
         if (context is AppCompatActivity) {
-            val listener = object : MatrixToBottomSheet.InteractionListener {
+            if (context !is MatrixToBottomSheet.InteractionListener) {
-                override fun navigateToRoom(roomId: String) {
+                fatalError("Caller context should implement MatrixToBottomSheet.InteractionListener", vectorPreferences.failFast())
-                    openRoom(context, roomId)
-                }
-
-                override fun switchToSpace(spaceId: String) {
-                    this@DefaultNavigator.switchToSpace(context, spaceId, Navigator.PostSwitchSpaceAction.None)
-                }
             }
             // TODO check if there is already one??
-            MatrixToBottomSheet.withLink(link, listener)
+            MatrixToBottomSheet.withLink(link)
                     .show(context.supportFragmentManager, "HA#MatrixToBottomSheet")
         }
     }

vector/src/main/java/im/vector/app/features/spaces/SpaceExploreActivity.kt

@@ -29,6 +29,7 @@ import im.vector.app.core.extensions.commitTransaction
 import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.databinding.ActivitySimpleBinding
 import im.vector.app.features.matrixto.MatrixToBottomSheet
+import im.vector.app.features.navigation.Navigator
 import im.vector.app.features.spaces.explore.SpaceDirectoryArgs
 import im.vector.app.features.spaces.explore.SpaceDirectoryFragment
 import im.vector.app.features.spaces.explore.SpaceDirectoryState
@@ -51,18 +52,18 @@ class SpaceExploreActivity : VectorBaseActivity<ActivitySimpleBinding>(), SpaceD
     val sharedViewModel: SpaceDirectoryViewModel by viewModel()
 
     private val fragmentLifecycleCallbacks = object : FragmentManager.FragmentLifecycleCallbacks() {
-        override fun onFragmentAttached(fm: FragmentManager, f: Fragment, context: Context) {
+        override fun onFragmentResumed(fm: FragmentManager, f: Fragment) {
             if (f is MatrixToBottomSheet) {
                 f.interactionListener = this@SpaceExploreActivity
             }
-            super.onFragmentAttached(fm, f, context)
+            super.onFragmentResumed(fm, f)
         }
 
-        override fun onFragmentDetached(fm: FragmentManager, f: Fragment) {
+        override fun onFragmentPaused(fm: FragmentManager, f: Fragment) {
             if (f is MatrixToBottomSheet) {
                 f.interactionListener = null
             }
-            super.onFragmentDetached(fm, f)
+            super.onFragmentPaused(fm, f)
         }
     }
 
@@ -86,14 +87,14 @@ class SpaceExploreActivity : VectorBaseActivity<ActivitySimpleBinding>(), SpaceD
 
         sharedViewModel.observeViewEvents {
             when (it) {
-                SpaceDirectoryViewEvents.Dismiss -> {
+                SpaceDirectoryViewEvents.Dismiss                      -> {
                     finish()
                 }
-                is SpaceDirectoryViewEvents.NavigateToRoom -> {
+                is SpaceDirectoryViewEvents.NavigateToRoom            -> {
                     navigator.openRoom(this, it.roomId)
                 }
                 is SpaceDirectoryViewEvents.NavigateToMxToBottomSheet -> {
-                    MatrixToBottomSheet.withLink(it.link, this).show(supportFragmentManager, "ShowChild")
+                    MatrixToBottomSheet.withLink(it.link).show(supportFragmentManager, "ShowChild")
                 }
             }
         }
@@ -115,7 +116,11 @@ class SpaceExploreActivity : VectorBaseActivity<ActivitySimpleBinding>(), SpaceD
     override fun create(initialState: SpaceDirectoryState): SpaceDirectoryViewModel =
             spaceDirectoryViewModelFactory.create(initialState)
 
-    override fun navigateToRoom(roomId: String) {
+    override fun mxToBottomSheetNavigateToRoom(roomId: String) {
         navigator.openRoom(this, roomId)
     }
+
+    override fun mxToBottomSheetSwitchToSpace(spaceId: String) {
+        navigator.switchToSpace(this, spaceId, Navigator.PostSwitchSpaceAction.None)
+    }
 }

vector/src/main/java/im/vector/app/features/usercode/UserCodeActivity.kt

@@ -24,6 +24,7 @@ import android.widget.Toast
 import androidx.core.app.ActivityCompat
 import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentManager
 import com.airbnb.mvrx.MvRx
 import com.airbnb.mvrx.viewModel
 import com.airbnb.mvrx.withState
@@ -60,8 +61,25 @@ class UserCodeActivity : VectorBaseActivity<ActivitySimpleBinding>(),
         injector.inject(this)
     }
 
+    private val fragmentLifecycleCallbacks = object : FragmentManager.FragmentLifecycleCallbacks() {
+        override fun onFragmentResumed(fm: FragmentManager, f: Fragment) {
+            if (f is MatrixToBottomSheet) {
+                f.interactionListener = this@UserCodeActivity
+            }
+            super.onFragmentResumed(fm, f)
+        }
+
+        override fun onFragmentPaused(fm: FragmentManager, f: Fragment) {
+            if (f is MatrixToBottomSheet) {
+                f.interactionListener = null
+            }
+            super.onFragmentPaused(fm, f)
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        supportFragmentManager.registerFragmentLifecycleCallbacks(fragmentLifecycleCallbacks, false)
 
         if (isFirstCreation()) {
             // should be there early for shared element transition
@@ -74,7 +92,7 @@ class UserCodeActivity : VectorBaseActivity<ActivitySimpleBinding>(),
                 UserCodeState.Mode.SCAN      -> showFragment(ScanUserCodeFragment::class, Bundle.EMPTY)
                 is UserCodeState.Mode.RESULT -> {
                     showFragment(ShowUserCodeFragment::class, Bundle.EMPTY)
-                    MatrixToBottomSheet.withLink(mode.rawLink, this).show(supportFragmentManager, "MatrixToBottomSheet")
+                    MatrixToBottomSheet.withLink(mode.rawLink).show(supportFragmentManager, "MatrixToBottomSheet")
                 }
             }
         }
@@ -97,6 +115,11 @@ class UserCodeActivity : VectorBaseActivity<ActivitySimpleBinding>(),
         }
     }
 
+    override fun onDestroy() {
+        supportFragmentManager.unregisterFragmentLifecycleCallbacks(fragmentLifecycleCallbacks)
+        super.onDestroy()
+    }
+
     private fun showFragment(fragmentClass: KClass<out Fragment>, bundle: Bundle) {
         if (supportFragmentManager.findFragmentByTag(fragmentClass.simpleName) == null) {
             supportFragmentManager.commitTransaction {
@@ -110,10 +133,12 @@ class UserCodeActivity : VectorBaseActivity<ActivitySimpleBinding>(),
         }
     }
 
-    override fun navigateToRoom(roomId: String) {
+    override fun mxToBottomSheetNavigateToRoom(roomId: String) {
         navigator.openRoom(this, roomId)
     }
 
+    override fun mxToBottomSheetSwitchToSpace(spaceId: String) {}
+
     override fun onBackPressed() = withState(sharedViewModel) {
         when (it.mode) {
             UserCodeState.Mode.SHOW -> super.onBackPressed()