public override bool RemoveSelection(int selectionNum)
{
if (textProvider.SupportedTextSelection == SupportedTextSelection.Single || selectionNum == 0)
{
if (selectionNum < 0 || selectionNum >= NSelections)
{
return(false);
}
int offset = (CaretProvider != null ? CaretProvider.CaretOffset : 0);
ITextRangeProvider textRange = GetTextRange(offset, offset);
textRange.Select();
return(true);
}
int startOffset, endOffset;
string selection = GetSelection(selectionNum, out startOffset, out endOffset);
if (selection != null && selection != String.Empty)
{
ITextRangeProvider textRange = GetTextRange(startOffset, endOffset);
try {
textRange.RemoveFromSelection();
} catch (InvalidOperationException e) {
Log.Debug(e);
return(false);
}
return(true);
}
return(false);
}
public override bool SetSelection(int selectionNum, int startOffset, int endOffset)
{
if (textProvider.SupportedTextSelection == SupportedTextSelection.Single)
{
if (selectionNum != 0 || NSelections != 1)
{
return(false);
}
ITextRangeProvider textRange = GetTextRange(startOffset, endOffset);
textRange.Select();
return(true);
}
if (!RemoveSelection(selectionNum))
{
return(false);
}
return(AddSelection(startOffset, endOffset));
}
public override bool AddSelection(int startOffset, int endOffset)
{
ITextRangeProvider textRange = GetTextRange(startOffset, endOffset);
if (NSelections == 0)
{
textRange.Select();
return(true);
}
try {
textRange.AddToSelection();
} catch (InvalidOperationException e) {
Log.Debug(e);
return(false);
}
return(true);
}
public void Select()
{
provider.Select();
}