Fixes #3379 revoke permission

vector/src/main/java/im/vector/fragments/roomwidgets/RoomWidgetFragment.kt

@@ -243,12 +243,18 @@ class RoomWidgetFragment : VectorBaseMvRxFragment(), HandleBackParticipant {
                 openUrlInExternalBrowser(requireContext(), state.formattedURL.invoke())
                 return@withState true
             }
+            R.id.action_revoke -> if (state.status == WidgetState.WIDGET_ALLOWED) {
+                viewModel.revokeWidget()
+                viewModel.doFinish()
+                return@withState true
+            }
         }
         return@withState super.onOptionsItemSelected(item)
     }
 
     override fun onPrepareOptionsMenu(menu: Menu?) = withState(viewModel) { state ->
         menu?.findItem(R.id.action_close)?.isVisible = state.canManageWidgets
+        menu?.findItem(R.id.action_revoke)?.isVisible = state.status == WidgetState.WIDGET_ALLOWED
         super.onPrepareOptionsMenu(menu)
     }
 

vector/src/main/java/im/vector/fragments/roomwidgets/RoomWidgetViewModel.kt

@@ -28,6 +28,7 @@ import im.vector.ui.arch.LiveEvent
 import im.vector.widgets.Widget
 import im.vector.widgets.WidgetsManager
 import org.matrix.androidsdk.MXSession
+import org.matrix.androidsdk.core.Log
 import org.matrix.androidsdk.core.callback.ApiCallback
 import org.matrix.androidsdk.core.model.MatrixError
 import org.matrix.androidsdk.data.Room
@@ -165,7 +166,7 @@ class RoomWidgetViewModel(initialState: RoomWidgetViewModelState, val widget: Wi
         val isAllowed = session
                 ?.integrationManager
                 ?.getKnownWidgetPermissions()
-                ?.find { it.stateEventId == widget.widgetEvent.eventId  }
+                ?.find { it.stateEventId == widget.widgetEvent.eventId }
                 ?.allowed
                 ?: false
 
@@ -276,6 +277,33 @@ class RoomWidgetViewModel(initialState: RoomWidgetViewModelState, val widget: Wi
         }
     }
 
+    fun revokeWidget(onFinished: (() -> Unit)? = null) {
+        setState {
+            copy(
+                    status = WidgetState.UNKNOWN
+            )
+        }
+        session?.integrationManager?.setWidgetAllowed(widget.widgetEvent?.eventId
+                ?: "", false, object : ApiCallback<Void?> {
+            override fun onSuccess(info: Void?) {
+                onFinished?.invoke()
+            }
+
+            override fun onUnexpectedError(e: Exception) {
+                Log.e(this::class.java.name, e.message)
+            }
+
+            override fun onNetworkError(e: Exception) {
+                Log.e(this::class.java.name, e.message)
+            }
+
+            override fun onMatrixError(e: MatrixError) {
+                Log.e(this::class.java.name, e.message)
+            }
+
+        })
+    }
+
     override fun onCleared() {
         super.onCleared()
         widgetsManager?.removeListener(mWidgetListener)

vector/src/main/res/menu/menu_room_widget.xml

@@ -23,4 +23,9 @@
         android:title="@string/delete"
         app:showAsAction="ifRoom" />
 
+    <item
+        android:id="@+id/action_revoke"
+        android:title="@string/room_widget_revoke_access"
+        app:showAsAction="never" />
+
 </menu>
\ No newline at end of file

vector/src/main/res/values/strings.xml

@@ -1122,6 +1122,7 @@
     <string name="room_widget_failed_to_load">Failed to load widget.\n%s</string>
     <string name="room_widget_reload">Reload widget</string>
     <string name="room_widget_open_in_browser">Open in browser</string>
+    <string name="room_widget_revoke_access">Revoke access for me</string>
 
     <string name="room_widget_permission_display_name">Your display name</string>
     <string name="room_widget_permission_avatar_url">Your avatar URL</string>