CompositeFocusHelper.java 文件源码

private CompositeFocusHelper(Widget containerWidget, HasFocusHandlers... hasFocusContents) {
    this.containerWidget = containerWidget;
    containerWidget.addDomHandler(this.keyDownHandler, KeyDownEvent.getType());
    if (hasFocusContents != null) {
        for (HasFocusHandlers hasFocus : hasFocusContents) {
            this.addHasFocusContent(hasFocus);
        }
    }

    this.handlerManager = new HandlerManager(containerWidget);
}