Port all confirm dialogs to Kirigami.PromptDialog

src/qml/ConfirmLeaveDialog.qml

@@ -5,28 +5,30 @@ import QtQuick
 import QtQuick.Controls as QQC2
 
 import org.kde.kirigami as Kirigami
-import org.kde.kirigamiaddons.formcard as FormCard
 
 import org.kde.neochat
 
-Kirigami.Dialog {
+Kirigami.PromptDialog {
     id: root
 
     required property NeoChatRoom room
 
-    width: Kirigami.Units.gridUnit * 24
-
     title: i18nc("@title:dialog", "Confirm Leaving Room")
+    subtitle: root.room ? i18nc("Do you really want to leave <room name>?", "Do you really want to leave %1?", root.room.displayNameForHtml) : ""
+    dialogType: Kirigami.PromptDialog.Warning
 
-    contentItem: FormCard.FormTextDelegate {
-        text: root.room ? i18nc("Do you really want to leave <room name>?", "Do you really want to leave %1?", root.room.displayNameForHtml) : ""
+    onRejected: {
+        root.close();
     }
 
-    customFooterActions: [
-        Kirigami.Action {
+    footer: QQC2.DialogButtonBox {
+        standardButtons: QQC2.Dialog.Cancel
+
+        QQC2.Button {
             text: i18nc("@action:button", "Leave Room")
+            QQC2.DialogButtonBox.buttonRole: QQC2.DialogButtonBox.AcceptRole
             icon.name: "arrow-left"
-            onTriggered: RoomManager.leaveRoom(root.room)
+            onClicked: RoomManager.leaveRoom(root.room)
         }
-    ]
+    }
 }