事件系统通过发布和捕获事件允许页面上的小部件相互通信。
An eventing system allowing the widgets to communicate with each other on the page by publishing and catching events.
具有相互通信的一些部件的实施例的说明并不是指所有这些部件都是必需的。
A description of an embodiment with several components in communication with each other does not imply that all such components are required.
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