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Insert: paste into a WKWebView page field, confirmed by its value (#5) #251

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Merged
iamnbutler merged 3 commits into from
Nov 12, 2026
Merged

Insert: paste into a WKWebView page field, confirmed by its value (#5) #251

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f9bb312
Insert: paste into a WKWebView page field, confirmed by its value (#5)
iamnbutler Nov 12, 2026
1adcaa2
lane: scope the paste receiver note to attachments
iamnbutler Nov 12, 2026
b5cfc26
lane: sync web-input-paste memory
iamnbutler Nov 12, 2026
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0 ...DVTAB86HD-the-receiver-check-comes-bef.md → ...DVTAB86HD-the-receiver-check-comes-bef.md
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13 changes: 13 additions & 0 deletions ...sktopMac/Paste.swift/01M78N6R3R77484F4KP21TYPXX-pasteattachment-the-receiver.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
---
id: 01M78N6R3R77484F4KP21TYPXX
anchor: '@file'
created: 2026-11-12T19:54:24Z
norm: '1'
sig: 27abcba5e975f16e
body_hash: d23058b9832794d1
raw_hash: cf982114ea9b7925
lines: 1-595
supersedes: 01M5D5AB34JDWZ565DVTAB86HD
---

pasteAttachment: the receiver check comes before requireKeyboardFocus so a background web field gets PASTE_UNVERIFIABLE_RECEIVER, as on Node, not a focus refusal. pasteText instead prepares the window first, since a web field's text paste can be read back (#5)
8 changes: 7 additions & 1 deletion native2/Sources/DesktopMac/Paste.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -217,8 +217,11 @@ private struct ReceiverState {
func focusedValue() -> String? {
let app = AXUIElementCreateApplication(window.pid)
AXUIElementSetMessagingTimeout(app, 0.2)
// A WKWebView app names no focused element; its page field reports AXFocused itself (#5).
guard Mac.generation(window.pid) == window.generation,
let focused = AX.element(AX.value(app, kAXFocusedUIElementAttribute)), CFEqual(focused, element),
let focused = AX.element(AX.value(app, kAXFocusedUIElementAttribute))
?? AX.element(AX.value(app, kAXFocusedWindowAttribute)).flatMap(Mac.focusedWebElement),
CFEqual(focused, element),
let frame = AX.frame(element), window.bounds.contains(CGPoint(x: frame.midX, y: frame.midY))
else { return nil }
return AX.string(element, kAXValueAttribute)
Expand Down Expand Up @@ -307,6 +310,9 @@ extension Mac {
throw pasteRefusal("Literal insertion requires 1–8192 UTF-16 units and an exact focused receiver.")
}
return try ClipboardGate.exclusive { transaction in
// An inactive app's window must be key before its focus can be checked and the paste read back, as typing
// does (#226): a WKWebView window that isn't key reports no focused field (#5).
_ = try prepareKeys(target)
let focused = try requireKeyboardFocus(target)
if secureFocus(focused) { throw secureFocusRefusal }
guard let baseline = ReceiverState.read(focused, target: target),
Expand Down
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