通过MACOS可访问性API在WebKit应用程序中选择文本

发布于 2025-02-04 07:23:56 字数 808 浏览 1 评论 0原文

我需要使用可访问性API在另一个应用程序（Apple Mail）的WebKit视图中选择文本。

对于常规文本字段，我会执行类似的操作：

func selectText(withRange range: CFRange) throws {
    var range = range
    guard let newValue: AXValue = AXValueCreate(AXValueType.cfRange, &range) else { return }
    AXUIElementSetAttributeValue(self, kAXSelectedTextRangeAttribute as CFString, newValue)
}

但是，在Apple Mail的编写窗口中，每个文本似乎都是类型静态文本，它不带任何必要的axselectedtextrange

它具有axselectedTextmarkErnange，它需要axtextmarker。我只是没有如何创建其中之一。我毫不费力地阅读用户创建选择的文本，使用此在这里/a>，但我无法通过可访问性API选择文本。

原文

I need to select text in a WebKit view of another application (Apple Mail) using accessibility APIs.

For regular text fields, I do something like this:

func selectText(withRange range: CFRange) throws {
    var range = range
    guard let newValue: AXValue = AXValueCreate(AXValueType.cfRange, &range) else { return }
    AXUIElementSetAttributeValue(self, kAXSelectedTextRangeAttribute as CFString, newValue)
}

However, in the composing window of Apple Mail every text seems to be of type Static Text which doesn't come with the necessary AXSelectedTextRange

It has AXSelectedTextMarkerRange, though, which requires an AXTextMarker. I just don't get how to create one of these. I have no trouble reading the text from a user created selection using this here, but I'm unable to select text via the accessibility APIs.

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太阳男子 2025-02-11 07:23:56

感谢 willeke 我能够弄清楚的提示。确实可以使用axtextmarkerforindex进行操作。知道它实际上很简单。

这是我的代码：

func getTextMarker(forIndex index: CFIndex) throws -> AXTextMarker? {
        var textMarker: AnyObject?
        guard AXUIElementCopyParameterizedAttributeValue(self,"AXTextMarkerForIndex" as CFString, index as AnyObject, &textMarker) == .success else { return nil }
        return textMarker as! AXTextMarker
}

func selectStaticText(withRange range: CFRange) throws {
        guard let textMarkerStart = try? getTextMarker(forIndex: range.location) else { return }
        guard let textMarkerEnd = try? getTextMarker(forIndex: range.location + range.length) else { return }
        let textMarkerRange = AXTextMarkerRangeCreate(kCFAllocatorDefault, textMarkerStart, textMarkerEnd)

        AXUIElementSetAttributeValue(self, "AXSelectedTextMarkerRange" as CFString, textMarkerRange)
}

Thanks to the hint from Willeke I was able to figure it out. It is indeed possible to do it using AXTextMarkerForIndex. Knowing that it's actually pretty straightforward.

Here's my code:

func getTextMarker(forIndex index: CFIndex) throws -> AXTextMarker? {
        var textMarker: AnyObject?
        guard AXUIElementCopyParameterizedAttributeValue(self,"AXTextMarkerForIndex" as CFString, index as AnyObject, &textMarker) == .success else { return nil }
        return textMarker as! AXTextMarker
}

func selectStaticText(withRange range: CFRange) throws {
        guard let textMarkerStart = try? getTextMarker(forIndex: range.location) else { return }
        guard let textMarkerEnd = try? getTextMarker(forIndex: range.location + range.length) else { return }
        let textMarkerRange = AXTextMarkerRangeCreate(kCFAllocatorDefault, textMarkerStart, textMarkerEnd)

        AXUIElementSetAttributeValue(self, "AXSelectedTextMarkerRange" as CFString, textMarkerRange)
}

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