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chore: handle com exceptions in windows helper

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This commit is contained in:
haritabh-z01 2025-12-11 23:12:06 +05:30
parent fbfa29309d
commit 76553887c5
1 changed files with 64 additions and 11 deletions
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75
packages/native-helpers/windows-helper/src/Services/UIAutomationService.cs
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@ -129,15 +129,30 @@ namespace WindowsHelper.Services
var tp = textPattern as TextPattern;
if (tp != null)
{
var selection = tp.GetSelection();
if (selection.Length > 0)
try
{
var range = selection[0];
context.TextSelection = new TextSelection
var selection = tp.GetSelection();
if (selection != null && selection.Length > 0)
{
SelectedText = range.GetText(-1),
IsEditable = context.IsEditable
};
var range = selection[0];
var selectedText = SafeGetTextFromRange(range);
if (selectedText != null)
{
context.TextSelection = new TextSelection
{
SelectedText = selectedText,
IsEditable = context.IsEditable
};
}
}
}
catch (COMException ex)
{
LogToStderr($"Error getting text selection: {ex.Message}");
}
catch (InvalidOperationException ex)
{
LogToStderr($"Error getting text selection: {ex.Message}");
}
}
}
@ -270,7 +285,7 @@ namespace WindowsHelper.Services
// Try Text pattern
if (element.TryGetCurrentPattern(TextPattern.Pattern, out object textPattern))
{
return (textPattern as TextPattern)?.DocumentRange.GetText(-1);
return SafeGetDocumentText(textPattern as TextPattern);
}
// Try RangeValue pattern
@ -297,7 +312,7 @@ namespace WindowsHelper.Services
var vp = valuePattern as ValuePattern;
return vp != null && !vp.Current.IsReadOnly;
}
// Check if it's an editable text control
if (element.Current.ControlType == ControlType.Edit ||
element.Current.ControlType == ControlType.Document)
@ -309,10 +324,48 @@ namespace WindowsHelper.Services
{
// Ignore pattern errors
}
return false;
}
/// <summary>
/// Safely retrieves text from a TextPatternRange, handling COM exceptions that can occur
/// when the underlying element becomes unavailable.
/// </summary>
private string? SafeGetTextFromRange(TextPatternRange? range, int maxLength = -1)
{
if (range == null) return null;
try
{
return range.GetText(maxLength);
}
catch (COMException ex)
{
LogToStderr($"SafeGetTextFromRange COMException: {ex.Message}");
return null;
}
catch (ElementNotAvailableException ex)
{
LogToStderr($"SafeGetTextFromRange ElementNotAvailable: {ex.Message}");
return null;
}
catch (InvalidOperationException ex)
{
LogToStderr($"SafeGetTextFromRange InvalidOperation: {ex.Message}");
return null;
}
}
/// <summary>
/// Safely retrieves the document text from a TextPattern.
/// </summary>
private string? SafeGetDocumentText(TextPattern? textPattern, int maxLength = -1)
{
if (textPattern?.DocumentRange == null) return null;
return SafeGetTextFromRange(textPattern.DocumentRange, maxLength);
}
private void LogToStderr(string message)
{
var timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");