from copy import copy
from visidata import vd, asyncthread, Progress, Sheet, options
Sheet.init('_ordering', list, copy=True) # (col:Column, reverse:bool)
@Sheet.api
def orderBy(sheet, *cols, reverse=False):
'Add cols to the internal ordering. No cols (or first col None) remove any previous ordering. call sort() if the ordering changes.'
if options.undo:
vd.addUndo(setattr, sheet, '_ordering', copy(sheet._ordering))
if sheet._ordering:
vd.addUndo(sheet.sort)
else:
vd.addUndo(setattr, sheet, 'rows', copy(sheet.rows))
do_sort = False
if not cols or cols[0] is None:
sheet._ordering.clear()
cols = cols[1:]
do_sort = True
for c in cols:
sheet._ordering.append((c, reverse))
do_sort = True
if do_sort:
sheet.sort()
class Reversor:
def __init__(self, obj):
from visidata import vd, Sheet, Progress, option, asyncthread, options, rotateRange, Fanout, undoAttrCopyFunc, copy
option('bulk_select_clear',
False,
'clear selected rows before new bulk selections',
replay=True)
Sheet.init('_selectedRows', dict) # rowid(row) -> row
@Sheet.api
def isSelected(self, row):
'True if given row is selected. O(log n).'
return self.rowid(row) in self._selectedRows
@Sheet.api
@asyncthread
def toggle(self, rows):
'Toggle selection of given `rows`.'
self.addUndoSelection()
for r in Progress(rows, 'toggling', total=len(self.rows)):
if not self.unselectRow(r):
self.selectRow(r)
@Sheet.api
def selectRow(self, row):
'Select given row. O(log n)'
self._selectedRows[self.rowid(row)] = row