/// <summary>
/// Try to keep the selection from including any of the characters in a writing system label.
/// See LT-8396.
/// </summary>
protected override void HandleSelectionChange(IVwRootBox prootb, IVwSelection vwselNew)
{
base.HandleSelectionChange(prootb, vwselNew);
// 1) We don't want to recurse into here.
// 2) If the selection is invalid we can't use it.
// 3) If the selection is entirely formattable ("IsSelectionInOneFormattableProp"), we don't need to do
// anything.
if (s_fProcessingSelectionChanged || !vwselNew.IsValid || EditingHelper.IsSelectionInOneFormattableProp())
{
return;
}
try
{
s_fProcessingSelectionChanged = true;
SelectionHelper hlpr = SelectionHelper.Create(vwselNew, this);
bool fRange = hlpr.IsRange;
bool fChangeRange = false;
if (fRange)
{
bool fAnchorEditable = vwselNew.IsEditable;
hlpr.GetIch(SelectionHelper.SelLimitType.Anchor);
int tagAnchor = hlpr.GetTextPropId(SelectionHelper.SelLimitType.Anchor);
hlpr.GetIch(SelectionHelper.SelLimitType.End);
int tagEnd = hlpr.GetTextPropId(SelectionHelper.SelLimitType.End);
bool fEndBeforeAnchor = vwselNew.EndBeforeAnchor;
if (fEndBeforeAnchor)
{
if (fAnchorEditable && tagAnchor > 0 && tagEnd < 0)
{
hlpr.SetTextPropId(SelectionHelper.SelLimitType.End, tagAnchor);
hlpr.SetIch(SelectionHelper.SelLimitType.End, 0);
fChangeRange = true;
}
}
else
{
if (!fAnchorEditable && tagAnchor < 0 && tagEnd > 0)
{
hlpr.SetTextPropId(SelectionHelper.SelLimitType.Anchor, tagEnd);
hlpr.SetIch(SelectionHelper.SelLimitType.Anchor, 0);
fChangeRange = true;
}
}
}
if (fChangeRange)
{
hlpr.SetSelection(true);
}
}
finally
{
s_fProcessingSelectionChanged = false;
}
}
/// <summary>
/// Try to keep the selection from including any of the characters in a writing system label.
/// Also update the writing system label if needed.
/// </summary>
protected override void HandleSelectionChange(IVwRootBox prootb, IVwSelection vwselNew)
{
base.HandleSelectionChange(prootb, vwselNew);
// 1) We don't want to recurse into here.
// 2) If the selection is invalid we can't use it.
if (s_fProcessingSelectionChanged || !vwselNew.IsValid)
{
return;
}
try
{
s_fProcessingSelectionChanged = true;
// If the selection is entirely formattable ("IsSelectionInOneFormattableProp"), we don't need to do
// the following selection truncation.
var hlpr = SelectionHelper.Create(vwselNew, this);
if (!EditingHelper.IsSelectionInOneFormattableProp())
{
var fRange = hlpr.IsRange;
var fChangeRange = false;
if (fRange)
{
var fAnchorEditable = vwselNew.IsEditable;
hlpr.GetIch(SelectionHelper.SelLimitType.Anchor);
var tagAnchor = hlpr.GetTextPropId(SelectionHelper.SelLimitType.Anchor);
hlpr.GetIch(SelectionHelper.SelLimitType.End);
var tagEnd = hlpr.GetTextPropId(SelectionHelper.SelLimitType.End);
var fEndBeforeAnchor = vwselNew.EndBeforeAnchor;
if (fEndBeforeAnchor)
{
if (fAnchorEditable && tagAnchor > 0 && tagEnd < 0)
{
hlpr.SetTextPropId(SelectionHelper.SelLimitType.End, tagAnchor);
hlpr.SetIch(SelectionHelper.SelLimitType.End, 0);
fChangeRange = true;
}
}
else
{
if (!fAnchorEditable && tagAnchor < 0 && tagEnd > 0)
{
hlpr.SetTextPropId(SelectionHelper.SelLimitType.Anchor, tagEnd);
hlpr.SetIch(SelectionHelper.SelLimitType.Anchor, 0);
fChangeRange = true;
}
}
}
if (fChangeRange)
{
hlpr.SetSelection(true);
}
}
if (m_fShowWsLabel)
{
// Might not be, especially when messing with the selection during Undoing the creation of a record.
if (Cache.ServiceLocator.IsValidObjectId(m_hvoObj))
{
var tss = m_rootb.DataAccess.get_StringProp(m_hvoObj, m_flid);
var ttp = tss.get_Properties(0);
int var;
var ws = ttp.GetIntPropValues((int)FwTextPropType.ktptWs, out var);
if (ws != 0 && m_vc is StringSliceVc && ws != (m_vc as StringSliceVc).WsLabel)
{
m_rootb.Reconstruct();
hlpr.SetSelection(true);
}
}
}
}
finally
{
s_fProcessingSelectionChanged = false;
}
}