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Fix iOS TextInputResponder (#19310)

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* Fix iOS TextInputResponder

* Add null validations to TextInputResponder

* Revert
This commit is contained in:
kerams
2026-01-06 15:04:12 +01:00
committed by GitHub
parent f1703dd784
commit 66af66e609
1 changed files with 104 additions and 71 deletions
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src/iOS/Avalonia.iOS/TextInputResponder.cs
+67 -34
View File
@@ -216,7 +216,8 @@ partial class AvaloniaView
string IUITextInput.TextInRange(UITextRange range)
{
var r = (AvaloniaTextRange)range;
if (range is AvaloniaTextRange r)
{
var surroundingText = _client.SurroundingText;
Logger.TryGet(LogEventLevel.Debug, ImeLog)?.Log(null, "IUIKeyInput.TextInRange {start} {end}", r.StartIndex, r.EndIndex);
@@ -244,14 +245,18 @@ partial class AvaloniaView
return result;
}
return null!;
}
void IUITextInput.ReplaceText(UITextRange range, string text)
{
var r = (AvaloniaTextRange)range;
Logger.TryGet(LogEventLevel.Debug, ImeLog)?
.Log(null, "IUIKeyInput.ReplaceText {start} {end} {text}", r.StartIndex, r.EndIndex, text);
if (range is AvaloniaTextRange r)
{
Logger.TryGet(LogEventLevel.Debug, ImeLog)?.Log(null, "IUIKeyInput.ReplaceText {start} {end} {text}", r.StartIndex, r.EndIndex, text);
_client.Selection = new TextSelection(r.StartIndex, r.EndIndex);
TextInput(text);
}
}
void IUITextInput.SetMarkedText(string markedText, NSRange selectedRange)
{
@@ -278,23 +283,33 @@ partial class AvaloniaView
public UITextRange GetTextRange(UITextPosition fromPosition, UITextPosition toPosition)
{
var f = (AvaloniaTextPosition)fromPosition;
var t = (AvaloniaTextPosition)toPosition;
if (fromPosition is AvaloniaTextPosition f && toPosition is AvaloniaTextPosition t)
{
Logger.TryGet(LogEventLevel.Debug, ImeLog)?.Log(null, "IUIKeyInput.GetTextRange {start} {end}", f.Index, t.Index);
return new AvaloniaTextRange(f.Index, t.Index);
}
return null!;
}
UITextPosition IUITextInput.GetPosition(UITextPosition fromPosition, nint offset)
{
var pos = (AvaloniaTextPosition)fromPosition;
Logger.TryGet(LogEventLevel.Debug, ImeLog)
?.Log(null, "IUIKeyInput.GetPosition {start} {offset}", pos.Index, (int)offset);
if (fromPosition is AvaloniaTextPosition pos)
{
Logger.TryGet(LogEventLevel.Debug, ImeLog)?.Log(null, "IUIKeyInput.GetPosition {start} {offset}", pos.Index, (int)offset);
var res = GetPositionCore(pos, offset);
Logger.TryGet(LogEventLevel.Debug, ImeLog)
?.Log(null, $"res: " + (res == null ? "null" : (int)res.Index));
return res!;
if (res is not null)
{
Logger.TryGet(LogEventLevel.Debug, ImeLog)?.Log(null, "res: {position}", res.Index);
return res;
}
return null!;
}
return null!;
}
private AvaloniaTextPosition? GetPositionCore(AvaloniaTextPosition pos, nint offset)
@@ -308,24 +323,29 @@ partial class AvaloniaView
return new AvaloniaTextPosition(end);
}
UITextPosition IUITextInput.GetPosition(UITextPosition fromPosition, UITextLayoutDirection inDirection,
nint offset)
UITextPosition IUITextInput.GetPosition(UITextPosition fromPosition, UITextLayoutDirection inDirection, nint offset)
{
var pos = (AvaloniaTextPosition)fromPosition;
Logger.TryGet(LogEventLevel.Debug, ImeLog)
?.Log(null, "IUIKeyInput.GetPosition {start} {direction} {offset}", pos.Index, inDirection, (int)offset);
if (fromPosition is AvaloniaTextPosition pos)
{
Logger.TryGet(LogEventLevel.Debug, ImeLog)?.Log(null, "IUIKeyInput.GetPosition {start} {direction} {offset}", pos.Index, inDirection, (int)offset);
var res = GetPositionCore(pos, inDirection, offset);
Logger.TryGet(LogEventLevel.Debug, ImeLog)
?.Log(null, $"res: " + (res == null ? "null" : (int)res.Index));
return res!;
if (res is not null)
{
Logger.TryGet(LogEventLevel.Debug, ImeLog)?.Log(null, "res: {position}", res.Index);
return res;
}
private AvaloniaTextPosition? GetPositionCore(AvaloniaTextPosition fromPosition, UITextLayoutDirection inDirection,
nint offset)
return null!;
}
return null!;
}
private AvaloniaTextPosition? GetPositionCore(AvaloniaTextPosition fromPosition, UITextLayoutDirection inDirection, nint offset)
{
var f = (AvaloniaTextPosition)fromPosition;
var newPosition = f.Index;
var newPosition = fromPosition.Index;
switch (inDirection)
{
@@ -339,18 +359,18 @@ partial class AvaloniaView
}
if (newPosition < 0)
return null!;
return null;
if (newPosition > DocumentLength)
return null!;
return null;
return new AvaloniaTextPosition(newPosition);
}
NSComparisonResult IUITextInput.ComparePosition(UITextPosition first, UITextPosition second)
{
var f = (AvaloniaTextPosition)first;
var s = (AvaloniaTextPosition)second;
if (first is AvaloniaTextPosition f && second is AvaloniaTextPosition s)
{
if (f.Index < s.Index)
return NSComparisonResult.Ascending;
@@ -360,31 +380,44 @@ partial class AvaloniaView
return NSComparisonResult.Same;
}
return default;
}
nint IUITextInput.GetOffsetFromPosition(UITextPosition fromPosition, UITextPosition toPosition)
{
var f = (AvaloniaTextPosition)fromPosition;
var t = (AvaloniaTextPosition)toPosition;
if (fromPosition is AvaloniaTextPosition f && toPosition is AvaloniaTextPosition t)
{
return t.Index - f.Index;
}
return default;
}
UITextPosition IUITextInput.GetPositionWithinRange(UITextRange range, UITextLayoutDirection direction)
{
var r = (AvaloniaTextRange)range;
if (range is AvaloniaTextRange r)
{
if (direction is UITextLayoutDirection.Right or UITextLayoutDirection.Down)
return r.End;
return r.Start;
}
return null!;
}
UITextRange IUITextInput.GetCharacterRange(UITextPosition byExtendingPosition, UITextLayoutDirection direction)
{
var p = (AvaloniaTextPosition)byExtendingPosition;
if (byExtendingPosition is AvaloniaTextPosition p)
{
if (direction is UITextLayoutDirection.Left or UITextLayoutDirection.Up)
return new AvaloniaTextRange(0, p.Index);
return new AvaloniaTextRange(p.Index, DocumentLength);
}
return null!;
}
NSWritingDirection IUITextInput.GetBaseWritingDirection(UITextPosition forPosition,
UITextStorageDirection direction)
{