Devtools: Implement changing room state

src/devtools/StateKeys.qml

@@ -31,13 +31,21 @@ FormCard.FormCardPage {
 
             delegate: FormCard.FormButtonDelegate {
                 text: model.stateKey
-                onClicked: applicationWindow().pageStack.pushDialogLayer(Qt.createComponent('org.kde.neochat', 'MessageSourceSheet'), {
-                    sourceText: stateKeysModel.stateEventJson(stateKeysModel.index(model.index, 0))
-                }, {
-                    title: i18nc("@title:window", "Event Source"),
-                    width: Kirigami.Units.gridUnit * 25
-                })
+                onClicked: openEventSource(model.stateKey)
             }
         }
     }
+
+    function openEventSource(stateKey: string): void {
+        applicationWindow().pageStack.pushDialogLayer(Qt.createComponent('org.kde.neochat', 'MessageSourceSheet'), {
+            model: stateKeysModel,
+            allowEdit: true,
+            room: root.room,
+            type: root.eventType,
+            stateKey: stateKey
+        }, {
+            title: i18nc("@title:window", "Event Source"),
+            width: Kirigami.Units.gridUnit * 25
+        });
+    }
 }