private bool SelectionIsWithinWord()
{
DocumentSpan currentCharacterSpan = new DocumentSpan(selection.Start, 1);
string currentText = document.GetTextInSpan(currentCharacterSpan);
DocumentSpan previousCharacterSpan = new DocumentSpan(Math.Max(0, selection.Start - 1), 1);
string previousText = document.GetTextInSpan(previousCharacterSpan);
return(previousText != " " && currentText != " ");
}
public void OnNavigatedTo(NavigationContext navigationContext)
{
this.document = (RichTextDocument)navigationContext.Parameters[HyperlinkDialogParameters.DocumentKey];
this.selection = (Selection)navigationContext.Parameters[HyperlinkDialogParameters.SelectionKey];
HyperlinkNode[] hyperlinksInSpan = document.GetHyperlinks(this.selection.DocumentSpan).ToArray();
if (hyperlinksInSpan.Length > 0)
{
this.hyperlinkBeingEdited = hyperlinksInSpan[0];
this.TextToDisplay = this.hyperlinkBeingEdited.GetText();
this.Address = this.hyperlinkBeingEdited.Uri;
this.ToolTipText = this.hyperlinkBeingEdited.Tooltip;
this.dialogMode = HyperlinkDialogMode.EditingHyperlink;
}
else
{
if (selection.Length > 0)
{
this.dialogMode = HyperlinkDialogMode.MakingHyperlink;
this.TextToDisplay = this.selection.Text;
}
else
{
if (this.SelectionIsWithinWord())
{
selection.SelectCurrentWord();
}
string textInSelection = document.GetTextInSpan(selection.DocumentSpan);
if (textInSelection.Trim().Length < 1)
{
this.dialogMode = HyperlinkDialogMode.InsertingHyperlink;
selection.Collapse(SelectionCollapseDirection.Start);
}
else
{
this.dialogMode = HyperlinkDialogMode.MakingHyperlink;
this.TextToDisplay = selection.Text;
}
}
}
}