mirror of
https://github.com/stablyai/orca.git
synced 2026-10-01 16:02:03 +00:00
Jinwoo Hong
ba858ee446
The shell no longer shortens the WebView for the keyboard; it publishes the keyboard height like the safe-area insets, so native's keyboard lift, refit hold and dismiss key run on the page unchanged. Keyboard and inset arithmetic read the shell's OS through a host-os seam. One page-version floor (manifest pageVersion, shell floor 1) replaces per-feature accept negotiation; a page below the floor gets the existing update wall, a desktop with no bundle keeps native screens. iOS shell drops the form accessory bar and its own keyboard observers. Native session screens untouched.
51 lines
2.1 KiB
Swift
51 lines
2.1 KiB
Swift
import ObjectiveC
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import UIKit
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import WebKit
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/// Removes WKWebView's form accessory bar (up, down, done). Native screens have none, and the
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/// keyboard event the shell publishes counts it, so the page lifted by the bar as well. WebKit
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/// exposes no switch, so the content view is moved onto a subclass whose `inputAccessoryView` is
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/// nil, the same technique react-native-webview's `hideKeyboardAccessoryView` uses.
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func hideKeyboardAccessoryBar(of webView: WKWebView) {
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guard
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let content = webView.scrollView.subviews.first(where: {
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String(describing: type(of: $0)).hasPrefix("WKContent")
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})
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else {
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return
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}
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let base: AnyClass = type(of: content)
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let name = "\(NSStringFromClass(base))_OrcaNoAccessory"
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let subclass: AnyClass
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if let existing = NSClassFromString(name) {
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subclass = existing
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} else {
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guard let created = objc_allocateClassPair(base, name, 0) else {
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return
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}
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let noAccessory: @convention(block) (AnyObject) -> UIView? = { _ in nil }
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let selector = #selector(getter: UIResponder.inputAccessoryView)
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let typeEncoding = method_getTypeEncoding(class_getInstanceMethod(UIResponder.self, selector)!)
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class_addMethod(created, selector, imp_implementationWithBlock(noAccessory), typeEncoding)
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objc_registerClassPair(created)
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subclass = created
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}
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object_setClass(content, subclass)
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}
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/// Stops WKWebView reacting to the keyboard itself. It listens for the keyboard's frame and scrolls
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/// the document to reveal the focused field, on top of the lift the page already applies from the
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/// height the shell sends, so the page moved twice. The shell's own listeners are unaffected.
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func ignoreKeyboardNotifications(in webView: WKWebView) {
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for name in [
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UIResponder.keyboardWillShowNotification,
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UIResponder.keyboardDidShowNotification,
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UIResponder.keyboardWillHideNotification,
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UIResponder.keyboardDidHideNotification,
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UIResponder.keyboardWillChangeFrameNotification,
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UIResponder.keyboardDidChangeFrameNotification
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] {
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NotificationCenter.default.removeObserver(webView, name: name, object: nil)
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}
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}
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