iOS: Don't hide keyboard on "Done" button when focus object has changed

If the focus object changed programmatically for example to the next
input field in a window, we want to keep the keyboard open. This
strangely only worked if the inputs had different IM hints because this
made the keyboard appear again.

Change-Id: I52e66bb7d2ff97ae7084173769d9b5c2d0c549b5
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/plugins/platforms/ios/qiostextresponder.mm b/src/plugins/platforms/ios/qiostextresponder.mm
index 2e8c0cb4db..e6ea43652f 100644
--- a/src/plugins/platforms/ios/qiostextresponder.mm
+++ b/src/plugins/platforms/ios/qiostextresponder.mm
@@ -925,6 +925,14 @@
     if ([text isEqualToString:@"\n"]) {
         [self sendKeyPressRelease:Qt::Key_Return modifiers:Qt::NoModifier];
 
+        // An onEnter handler of a TextInput might move to the next input by calling
+        // nextInput.forceActiveFocus() which changes the focusObject.
+        // In that case we don't want to hide the VKB.
+        if (focusObject != QGuiApplication::focusObject()) {
+            qImDebug() << "focusObject already changed, not resigning first responder.";
+            return;
+        }
+
         if (self.returnKeyType == UIReturnKeyDone || self.returnKeyType == UIReturnKeyGo
             || self.returnKeyType == UIReturnKeySend || self.returnKeyType == UIReturnKeySearch)
             [self resignFirstResponder];