Add dedicated HStringFilterModel component

src/gui/Base/HStringFilterModel.qml

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+import QtQuick 2.12
+import QtQml.Models 2.12
+
+HFilterModel {
+    model: sourceModel
+    acceptItem: item => utils.filterMatches(filter, item[field])
+    onFilterChanged: refilterAll()
+
+
+    property string field: "id"
+    property string filter: ""
+    property ListModel sourceModel
+}

src/gui/MainPane/RoomList.qml

@@ -8,14 +8,14 @@ import "../Base"
 HListView {
     id: roomList
 
-    model: HFilterModel {
-        model: ModelStore.get("every_room")
+    model: HStringFilterModel {
+        id: filterModel
+        sourceModel: ModelStore.get("every_room")
+        field: "display_name"
         delegate: Room {
             width: roomList.width
             onActivated: showRoomAtIndex(model.index)
         }
-
-        acceptItem: item => utils.filterMatches(filter, item.display_name)
     }
 
     section.property: "for_account"
@@ -26,10 +26,8 @@ HListView {
         width: roomList.width
     }
 
-    onFilterChanged: model.refilterAll()
 
-
-    property string filter: ""
+    property alias filter: filterModel.filter
     readonly property var sectionIndice: {
         const sections = {}
         const accounts = ModelStore.get("accounts")

src/gui/Pages/Chat/RoomPane/MemberView.qml

@@ -13,12 +13,11 @@ HColumnLayout {
         id: memberList
         clip: true
 
-        model: HFilterModel {
-            model: ModelStore.get(chat.userId, chat.roomId, "members")
+        model: HStringFilterModel {
+            sourceModel: ModelStore.get(chat.userId, chat.roomId, "members")
+            field: "display_name"
+            filter: filterField.text
             delegate: MemberDelegate { width: memberList.width }
-
-            acceptItem: item =>
-                utils.filterMatches(filterField.text, item.display_name)
         }
 
         Layout.fillWidth: true
@@ -58,8 +57,6 @@ HColumnLayout {
                 // declared normally
                 Component.onCompleted: placeholderText = qsTr("Filter members")
 
-                onTextChanged: memberList.model.refilterAll()
-
                 Behavior on opacity { HNumberAnimation {} }
             }