当我编辑一份清单中一个物体的数量和变化趋势时,我如何利用新的清单更新清单?
举例说,当我改变我的JTree的节点时,我使用了我在改变一个清单项目时做些什么?
该原则与<代码>相同。 页: 1 <代码>AbstractListModel不知道贵国物体的某些内部财产何时发生变化。 因此,当你作出改变时,你必须呼吁改变表明目标的具体方法。 名单模型将焚烧<密码>JList收到的正确事件,该活动将更新/复制(无论你是否希望打电话)。
Personally I prefer to create ListModels which are self-contained, e.g. if the objects you use fire events when they change the ListModel can listen for those changes and fire the appropriate events itself instead of having to call this method externally.
只是注意到这一特殊方法受到保护,因此,你需要按照我的建议建立模型,而且你不能从外部说这种方法(这是一件好事)。
清单. 更新清单(ID)将这样做,尽管我说这样做有一些间接费用。
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