带有自动建议的 NSTextField，比如 Safari 的地址栏? [英] NSTextField with auto-suggestions like Safari's address bar?

问题描述

让 NSTextField 在用户键入时动态显示在其下方的推荐列表"的最简单方法是什么?就像 Safari 的地址栏有某种菜单一样(我非常有信心 Safari 的地址栏建议是菜单，因为它有圆角、蓝色渐变选择和背景模糊).

我尝试过使用 .

解决方案

这仅解决了您答案的一半，但我相信您需要对 NSTextView 进行子类化并实现 - (NSRange)rangeForUserCompletion 方法，返回文本字段中整个字符串的范围.这应该确保它不只是自动完成最近输入的单词.

如果你想要一个自定义菜单，你将不得不自己做，可能通过实现 -controlTextDidChange: 方法并在适当的时候显示一个带有表格的自定义视图.

What's the easiest way to have an NSTextField with a "recommendation list" dynamically shown below it as the user types? Just like Safari's address bar that has a menu of some sorts (I'm pretty confident Safari's address bar suggestions is menu since it has rounded corners, blue gradient selection, and background blurring).

I've tried using NSTextView's autocompletion facility but found it was inadequate:

• It tries to complete words instead of the whole text fields – in other words, selecting an autocomplete suggestion will only replace the current word.
• It nudges the autocompletion list forward and align it with the insertion point instead of keeping it align with the text field.

In the sample screenshot above whenever I selected the autocomplete suggestion the text field only replaces K with the suggested item in the list, which results in Abadi Abadi Kurniawan.

These are what I'd like to achieve:

• Whenever a suggestion is selected, the entire text field is replaced with the suggestion.
• Keep the suggestion list aligned with the text field's left side.

Note: This is not a question about adding progress indicator behind a text field.

解决方案

This only addresses half of your answer, but I believe you need to subclass NSTextView and implement the - (NSRange)rangeForUserCompletion method, returning the range of the entire string in the text field. This should make sure that it doesn't just autocomplete the most recently entered word.

If you want a custom menu, you're going to have to do that yourself, probably by implementing the -controlTextDidChange: method and displaying a custom view with a table when appropriate.

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