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# (C) Copyright 2005-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
from wx.grid import (
PyGridTableBase,
GridCellAttr,
GridTableMessage,
)
from wx.grid import (
GRIDTABLE_NOTIFY_ROWS_DELETED,
GRIDTABLE_NOTIFY_ROWS_APPENDED,
)
from wx.grid import (
GRIDTABLE_NOTIFY_COLS_DELETED,
GRIDTABLE_NOTIFY_COLS_APPENDED,
)
from wx.grid import GRIDTABLE_REQUEST_VIEW_GET_VALUES
class VirtualModel(PyGridTableBase):
"""
A custom wxGrid Table that expects a user supplied data source.
THIS CLASS IS NOT LIMITED TO ONLY DISPLAYING LOG DATA!
"""
def __init__(self, data, column_names):
"""data is currently a list of the form
[(rowname, dictionary),
dictionary.get(colname, None) returns the data for a cell
"""
PyGridTableBase.__init__(self)
self.set_data_source(data)
self.colnames = column_names
# self.renderers = {"DEFAULT_RENDERER":DefaultRenderer()}
# self.editors = {}
# we need to store the row length and col length to see if the table has changed size
self._rows = self.GetNumberRows()
self._cols = self.GetNumberCols()
# -------------------------------------------------------------------------------
# Implement/override the methods from PyGridTableBase
# -------------------------------------------------------------------------------
def GetNumberCols(self):
return len(self.colnames)
def GetNumberRows(self):
return len(self._data)
def GetColLabelValue(self, col):
return self.colnames[col]
def GetRowLabelValue(self, row):
return self._data[row][0]
def GetValue(self, row, col):
return str(self._data[row][1].get(self.GetColLabelValue(col), ""))
def GetRawValue(self, row, col):
return self._data[row][1].get(self.GetColLabelValue(col), "")
def SetValue(self, row, col, value):
print("Setting value %d %d %s" % (row, col, value))
print("Before ", self.GetValue(row, col))
self._data[row][1][self.GetColLabelValue(col)] = value
print("After ", self.GetValue(row, col))
""" def GetTypeName(self, row, col):
if col == 2 or col == 6:
res = "MeasurementUnits"
elif col == 7:
res = GRID_VALUE_BOOL
else:
res = self.base_GetTypeName(row, col)
# print 'asked for type of col ', col, ' ' ,res
return res"""
# -------------------------------------------------------------------------------
# Accessors for the Enthought data model (a dict of dicts)
# -------------------------------------------------------------------------------
def get_data_source(self):
""" The data structure we provide the data in.
"""
return self._data
def set_data_source(self, source):
self._data = source
return
# -------------------------------------------------------------------------------
# Methods controlling updating and editing of cells in grid
# -------------------------------------------------------------------------------
def ResetView(self, grid):
"""
(wxGrid) -> Reset the grid view. Call this to
update the grid if rows and columns have been added or deleted
"""
grid.BeginBatch()
for current, new, delmsg, addmsg in [
(
self._rows,
self.GetNumberRows(),
GRIDTABLE_NOTIFY_ROWS_DELETED,
GRIDTABLE_NOTIFY_ROWS_APPENDED,
),
(
self._cols,
self.GetNumberCols(),
GRIDTABLE_NOTIFY_COLS_DELETED,
GRIDTABLE_NOTIFY_COLS_APPENDED,
),
]:
if new < current:
msg = GridTableMessage(self, delmsg, new, current - new)
grid.ProcessTableMessage(msg)
elif new > current:
msg = GridTableMessage(self, addmsg, new - current)
grid.ProcessTableMessage(msg)
self.UpdateValues(grid)
grid.EndBatch()
self._rows = self.GetNumberRows()
self._cols = self.GetNumberCols()
# update the renderers
# self._updateColAttrs(grid)
# self._updateRowAttrs(grid) too expensive to use on a large grid
# update the scrollbars and the displayed part of the grid
grid.AdjustScrollbars()
grid.ForceRefresh()
def UpdateValues(self, grid):
"""Update all displayed values"""
# This sends an event to the grid table to update all of the values
msg = GridTableMessage(self, GRIDTABLE_REQUEST_VIEW_GET_VALUES)
grid.ProcessTableMessage(msg)
def GetAttr88(self, row, col, someExtraParameter):
print("Overridden GetAttr ", row, col)
"""Part of a workaround to avoid use of attributes, queried by _PropertyGrid's IsCurrentCellReadOnly"""
# property = self.GetPropertyForCoordinate( row, col )
# object = self.GetObjectForCoordinate( row, col )
# if property.ReadOnly( object ):
attr = GridCellAttr()
attr.SetReadOnly(1)
return attr
# return None
def _updateColAttrs88(self, grid):
"""
wxGrid -> update the column attributes to add the
appropriate renderer given the column name.
"""
for col, colname in enumerate(self.colnames):
attr = GridCellAttr()
# attr.SetAlignment(ALIGN_LEFT, ALIGN_CENTRE)
if colname in self.renderers:
# renderer = self.plugins[colname](self)
renderer = self.renderers[colname]
# if renderer.colSize:
# grid.SetColSize(col, renderer.colSize)
# if renderer.rowSize:
# grid.SetDefaultRowSize(renderer.rowSize)
# attr.SetReadOnly(False)
# attr.SetRenderer(renderer)
else:
renderer = self.renderers["DEFAULT_RENDERER"] # .Clone()
attr.SetRenderer(renderer)
"""else:
#renderer = GridCellFloatRenderer(6,2)
#attr.SetReadOnly(True)
#attr.SetRenderer(renderer)"""
if colname in self.editors:
editor = self.editors[colname]
attr.SetEditor(editor)
grid.SetColAttr(col, attr)
return
# ------------------------------------------------------------------------------
# code to manipulate the table (non wx related)
# ------------------------------------------------------------------------------
def AppendRow(self, row):
""" Append a tupe containing (name, data)
"""
name, data = row
print("Appending ", name)
self._data.append(row)
"""entry = {}
for name in self.colnames:
entry[name] = "Appended_%i"%row
return"""
def DeleteCols88(self, cols):
"""
cols -> delete the columns from the dataset
cols hold the column indices
"""
# we'll cheat here and just remove the name from the
# list of column names. The data will remain but
# it won't be shown
deleteCount = 0
cols = cols[:]
cols.sort()
for i in cols:
self.colnames.pop(i - deleteCount)
# we need to advance the delete count
# to make sure we delete the right columns
deleteCount += 1
if not len(self.colnames):
self.data = []
def DeleteRow(self, row):
name, data = row
print("Deleting ", name)
self._data.remove(row)
def DeleteRows88(self, rows):
"""
rows -> delete the rows from the dataset
rows hold the row indices
"""
deleteCount = 0
rows = rows[:]
rows.sort()
for i in rows:
self._data.pop(i - deleteCount)
# we need to advance the delete count
# to make sure we delete the right rows
deleteCount += 1
def SortColumn88(self, col):
"""
to do - never tested
tried to rename data to _data and _data to _tmp_data
col -> sort the data based on the column indexed by col
"""
name = self.colnames[col]
_tmp_data = []
for row in self._data:
rowname, entry = row
_tmp_data.append((entry.get(name, None), row))
_tmp_data.sort()
self._data = []
for sortvalue, row in _tmp_data:
self._data.append(row)
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