protected virtual async Task AsyncToolTipRequestDefaultImpl(ToolTipRequestEventArgs arg)
{
var adapter = _adapter;
if (null != adapter)
{
var info = await adapter.GetToolTipAsync(arg.Position);
if (null != info)
{
arg.SetToolTip(info.Create());
}
}
}
private async void OnMouseHover(object sender, MouseEventArgs e)
{
TextViewPosition?position;
try
{
position = TextArea.TextView.GetPositionFloor(e.GetPosition(TextArea.TextView) + TextArea.TextView.ScrollOffset);
}
catch (ArgumentOutOfRangeException)
{
// TODO: check why this happens
e.Handled = true;
return;
}
var args = new ToolTipRequestEventArgs {
InDocument = position.HasValue
};
if (!position.HasValue || position.Value.Location.IsEmpty)
{
return;
}
args.LogicalPosition = position.Value.Location;
args.Position = Document.GetOffset(position.Value.Line, position.Value.Column);
RaiseEvent(args);
if (args.ContentToShow == null)
{
if (AsyncToolTipRequest != null)
{
await AsyncToolTipRequest.Invoke(args).ConfigureAwait(true);
}
}
if (args.ContentToShow == null)
{
return;
}
if (_toolTip == null)
{
_toolTip = new ToolTip {
MaxWidth = 400
};
_toolTip.Closed += ToolTipClosed;
ToolTipService.SetInitialShowDelay(_toolTip, 0);
}
_toolTip.PlacementTarget = this; // required for property inheritance
var stringContent = args.ContentToShow as string;
if (stringContent != null)
{
_toolTip.Content = new TextBlock
{
Text = stringContent,
TextWrapping = TextWrapping.Wrap
};
}
else
{
_toolTip.Content = args.ContentToShow;
}
e.Handled = true;
_toolTip.IsOpen = true;
}