Fix ForgetRoomPopup destruction/callback

src/python/matrix_client.py

@@ -817,6 +817,9 @@ class MatrixClient(nio.AsyncClient):
         if not self.first_sync_done.is_set():
             return
 
+        if room.room_id not in self.models[Room, self.user_id]:
+            return
+
         self.models[Room, self.user_id][room.room_id].typing_members = sorted(
             room.user_name(user_id) for user_id in ev.users
             if user_id not in self.backend.clients

src/qml/Chat/Banners/LeftBanner.qml

@@ -24,19 +24,16 @@ Banner {
         forget: button => {
             Utils.makePopup(
                 "Popups/ForgetRoomPopup.qml",
-                chatPage,
+                mainUI,  // Must not be destroyed with chatPage
                 {
-                    userId:            chatPage.userId,
-                    roomId:            chatPage.roomId,
-                    roomName:          chatPage.roomInfo.display_name,
-                    forgottenCallback: () => {
-                        button.loading = false
-                        Qt.callLater(pageLoader.showPage, "Default")
-                    },
+                    userId:   chatPage.userId,
+                    roomId:   chatPage.roomId,
+                    roomName: chatPage.roomInfo.display_name,
                 },
                 obj => {
                     obj.onOk.connect(() => { button.loading = true })
                 },
+                false,
             )
         }
     })

src/qml/Popups/ForgetRoomPopup.qml

@@ -1,6 +1,7 @@
 import QtQuick 2.12
 
 BoxPopup {
+    id: popup
     summary.text: qsTr("Leave %1 and discard the history?").arg(roomName)
     details.text: qsTr(
         "You will not be able to see the messages you received in " +
@@ -12,11 +13,23 @@ BoxPopup {
     okText: qsTr("Forget")
     box.focusButton: "ok"
 
-    onOk: py.callClientCoro(userId, "room_forget", [roomId], forgottenCallback)
+    onOk: py.callClientCoro(userId, "room_forget", [roomId], () => {
+        if (window.uiState.page == "Chat/Chat.qml" &&
+            window.uiState.pageProperties.userId == userId &&
+            window.uiState.pageProperties.roomId == roomId)
+        {
+            pageLoader.showPage("Default")
+            Qt.callLater(popup.destroy)
+        }
+    })
+
+    onCancel: canDestroy = true
+    onClosed: if (canDestroy) Qt.callLater(popup.destroy)
 
 
     property string userId: ""
     property string roomId: ""
     property string roomName: ""
-    property var forgottenCallback: null
+
+    property bool canDestroy: false
 }

src/qml/SidePane/RoomDelegate.qml

@@ -131,7 +131,9 @@ HTileDelegate {
                     userId: model.user_id,
                     roomId: model.data.room_id,
                     roomName: model.data.display_name,
-                }
+                },
+                null,
+                false,
             )
         }
     }

src/qml/utils.js

@@ -31,11 +31,12 @@ function makeObject(url, parent=null, properties={}, callback=null) {
 }
 
 
-function makePopup(url, parent=null, properties={}, callback=null) {
+function makePopup(url, parent=null, properties={}, callback=null,
+                   autoDestruct=true) {
     makeObject(url, parent, properties, (popup) => {
         popup.open()
-        popup.closed.connect(() => { popup.destroy() })
-        if (callback) callback(popup)
+        if (autoDestruct) popup.closed.connect(() => { popup.destroy() })
+        if (callback)     callback(popup)
     })
 }