Listbox(JList)不会从自定义ListModel动态更新

我正在使用Seesaw在Clojure中开发一个GUI应用程序,当我的自定义ListModel更新时,我很难获得要更新的列表框(Java中的JList)。

以下是我的一些代码:

(deftype ActionHistoryListModel
  [^{:unsynchronized-mutable true} listeners
   ^{:unsynchronized-mutable true} listening-to]

  ListModel
  (addListDataListener [this listener]
    (set! listeners (conj listeners listener)))
  (removeListDataListener [this listener]
    (set! listeners (remove #(= % listener) listeners)))
  (getSize [this] 
    (get-in (deref listening-to) [:count]))
  (getElementAt [this index]
    (get-in (deref listening-to) [:actions index]))

  ActionHistoryListModelProtocol
  (listen-to [this r]
    (do
      (set! listening-to r)
      (add-watch r this (fn [_ _ _ new-state] (.notify this new-state)))))
  (notify [this new-state]
    (let [action ((meta new-state) :last-action)
          const  (cond
            (= action :create) INTERVAL_ADDED
            (= action :update) CONTENTS_CHANGED)
          index  (last ((meta new-state) :action-target))
          event  (ListDataEvent. this const index index)
          notification (cond
            (= action :create) #(.intervalAdded % event)
            (= action :update) #(.contentsChanged % event))
          ]
      (. (.. System out) print (str "Index: " index "\n" "Event: " event "\n"))
      (map #(invoke-later (notification %)) listeners)))
  )

(defn make-action-history-list-model []
  (ActionHistoryListModel. #{} nil))

(def ahlm (make-action-history-list-model))
(.listen-to ahlm action-history)

(def undo-list (listbox :model ahlm))

; then put list in frame...

哪里 action-history 是一个 ref 。

它到达了应该更新列表的位置,因为 System.out.print 正在发生,但列表框不想更新

有什么可能出错的想法吗?是不是混合使用EDT和手表回调?

如果需要更多的代码,请告诉我。