user-interface - 显示警报的简单方法

Question

是否可以以简单的方式向用户显示警报？就像是：

save

  title
    ifEmpty: [ 'Title cannot be empty' alert ]
    ifNotEmpty: [ "…do the saving…" ]

这样，如果titleivar 为空，用户将看到带有相应消息的对话框。

Answer 1

您可以（在某种程度上）调整对话框窗口，然后再用一个块显示它。

就像在带有红色边框的屏幕上居中一样。

UIManager default 
      alert: 'Something is wrong' 
      title: 'Issue ahead' 
      configure: [ :d | d position: Display center; borderColor: Color red].

Answer 2

这将是：

self inform: 'Title cannot be empty'

但老实说，我对此并不满意，因为它就像一个咆哮通知。

大多数时候，这正是你想要的，但有时你需要一个模态通知......无论如何，这就是你所需要的 :)

Answer 3

yes it is

for a typical error dialog you can use this piece of code

UIManager default abort: 'Title cannot be empty'.

for a growl messages that the user has not to click on ok button you can use this

UIManager default inform: 'Data has been saved'.

UIManager has actually a lot of options on this and a lot of messages you can use. Just explore the class and I am sure you will find something that fits your needs.