/// ------------------------------------------------------------------------------------
/// <summary>
/// Deletes a footnote
/// </summary>
/// <param name="args"></param>
/// <returns><c>true</c> if we handle this</returns>
/// ------------------------------------------------------------------------------------
protected bool OnDeleteFootnote(object args)
{
if (DataUpdateMonitor.IsUpdateInProgress(DataAccess))
{
return(true); //discard this event
}
if (!ValidFootnoteSelection)
{
return(true);
}
string undo;
string redo;
TeResourceHelper.MakeUndoRedoLabels("kstidUndoDelFootnote", out undo, out redo);
using (new UndoTaskHelper(this, undo, redo, false))
using (new DataUpdateMonitor(this, RootBox.DataAccess, this, "DeleteFootnote"))
{
SelectionHelper helper = SelectionHelper.Create(this);
int fnLevel = helper.GetLevelForTag((int)ScrBook.ScrBookTags.kflidFootnotes);
if (helper.Selection.IsRange)
{
DeleteFootnoteRange(helper);
}
else
{
// There's no range selection, so delete only one footnote
ScrFootnote footnote = new ScrFootnote(m_fdoCache, helper.LevelInfo[fnLevel].hvo);
ScrFootnote.DeleteFootnoteAndMarker(footnote);
}
if (RootBox.Height <= 0)
{
DraftView.Focus();
}
else
{
int iBook = helper.LevelInfo[fnLevel + 1].ihvo;
ScrBook book = m_bookFilter.GetBook(iBook);
int iFootnote = helper.LevelInfo[fnLevel].ihvo;
// If the last footnote in the book was deleted find a footnote to move to
if (iFootnote >= book.FootnotesOS.Count)
{
FindNearestFootnote(ref iBook, ref iFootnote);
}
FootnoteEditingHelper.ScrollToFootnote(iBook, iFootnote, 0);
}
}
return(true);
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// Deletes footnotes when there is a range selection.
/// </summary>
/// <param name="helper"></param>
/// ------------------------------------------------------------------------------------
private void DeleteFootnoteRange(SelectionHelper helper)
{
int nTopLevels = helper.GetNumberOfLevels(SelectionHelper.SelLimitType.Top);
int nBottomLevels = helper.GetNumberOfLevels(SelectionHelper.SelLimitType.Bottom);
// Get the index of the book containing the first footnote in the selection.
// Then get the index of the footnote within that book.
int iFirstBook =
helper.GetLevelInfo(SelectionHelper.SelLimitType.Top)[nTopLevels - 1].ihvo;
int iFirstFootnote =
helper.GetLevelInfo(SelectionHelper.SelLimitType.Top)[nTopLevels - 2].ihvo;
// Get the index of the book containing the last footnote in the selection.
// Then get the index of the footnote within that book.
int iLastBook =
helper.GetLevelInfo(SelectionHelper.SelLimitType.Bottom)[nBottomLevels - 1].ihvo;
int iLastFootnote =
helper.GetLevelInfo(SelectionHelper.SelLimitType.Bottom)[nBottomLevels - 2].ihvo;
// Loop through the books containing footnotes in the selection.
for (int iBook = iFirstBook; iBook <= iLastBook; iBook++)
{
ScrBook book = BookFilter.GetBook(iBook);
int iBeg = iFirstFootnote;
if (iFirstBook != iLastBook && iBook > iFirstBook)
{
iBeg = 0;
}
int iEnd = iLastFootnote;
if (iFirstBook != iLastBook && iBook < iLastBook)
{
iEnd = book.FootnotesOS.Count - 1;
}
// Loop through the footnotes from the selection that are in the
// current book. Go in reverse order through the collection.
for (int i = iEnd; i >= iBeg; i--)
{
// TODO: check filter for each HVO
ScrFootnote footnote = new ScrFootnote(m_fdoCache, book.FootnotesOS[i].Hvo);
ScrFootnote.DeleteFootnoteAndMarker(footnote);
}
}
}