突出显示NSTextField中的选择 [英] Highlight a selection in NSTextField

问题描述

我希望能够突出显示NSTextField中的一部分文本，但是我无法通过Google来做到这一点.

I want to be able to highlight a portion of text in an NSTextField but I've not been able to Google a way of doing this.

我已经定义了NSRange，但是我找不到使用此范围突出显示文本的方法.我唯一出现的是textField.selectText，但据说这突出了整个字段.

I have defined an NSRange but I cannot find a way of using this range to highlight the text. The only thing I have turned up is textField.selectText but this supposedly highlights the whole field.

我正在使用Swift 2.

I'm using Swift 2.

推荐答案

您可能已经注意到，NSTextField仅在具有焦点时才显示选择范围，即是第一响应者.在这种情况下，编辑由称为字段编辑器的NSTextView处理.因此，请确保该字段具有焦点(例如，通过使用NSWindow的makeFirstResponder:方法)，然后使用NSControl方法currentEditor获取字段编辑器，然后可以使用NSText方法setSelectedRange:.

You may have noticed that an NSTextField only shows a selection range when it has focus, i.e., is the first responder. In this case, editing is handled by an NSTextView called the field editor. So, make sure the field has focus (e.g., by using the makeFirstResponder: method of NSWindow), then use the NSControl method currentEditor to get the field editor, and then you can use the NSText method setSelectedRange:.

ObjC

NSText* fieldEditor = [myField currentEditor];
[fieldEditor setSelectedRange: mySelRange];

快速

let fieldEditor = textfield.currentEditor()
fieldEditor?.selectedRange = range

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