GWT为移动设备定制CellList多选模型 [英] GWT Customize CellList Multi-Selection Model for Mobile Devices

问题描述

我有一个使用MultiSelectionModel的应用程序，它运行良好，但我需要我正在开发的用于移动设备的网站，因此我无法使用键盘来协助选择元素（因为它不存在）。 EX：在桌面上，我只需按住ctrl并点击所有我想选择的元素。



因此，在移动设备上，我想修改默认行为MultiSelectionModel，这样当你点击一个CellList项目时，它将切换该项目的选择状态。


我已经查看了它的源代码，并且无法看到实现我需要的行为。 （Mobile MultiSelection）。

I have an application, that uses the MultiSelectionModel, and it works great, but I need the site I'm developing to work on mobile devices, and so I can't use the keyboard to assist in selecting the elements (since it doesn't exist). EX: On the desktop I just hold ctrl and click on all the element that I want to select.

So on the mobile device, I would like to modify the default behavior of the MultiSelectionModel so that when you click on a CellList item, it toggles the selection state of that item.

I have looked through the source for it and cannot see anyway to implement the behavior that I need. (Mobile MultiSelection).

推荐答案

无论您是否添加复选框，您都必须添加单元格预览处理程序。定义一个最简单的方法是使用 DefaultSelectionEventManager ，可以使用复选框管理器与复选框列组合，或创建一个自定义的（您可以将点击事件映射到切换操作）。

Whether you add a checkbox column or not, you'll have to add a cell preview handler. The easiest way to define one is to use DefaultSelectionEventManager, either using a checkbox manager in combination with a checkbox column, or creating a custom one (you'd map a click event into a toggle action).

您可以在 GWT Showcase ;它使用带有两个参数的 setSelectionModel overload同时添加 CellPreviewEvent.Handler 。

You can see it used, the checkbox variant, in the GWT Showcase; it uses the setSelectionModel overload with two arguments to add the CellPreviewEvent.Handler at the same time.

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