/usr/lib/thuban/Thuban/UI/tableview.py is in thuban 1.2.2-12build3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 | # Copyright (c) 2001, 2002, 2003 by Intevation GmbH
# Authors:
# Bernhard Herzog <bh@intevation.de>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.
__version__ = "$Revision: 2817 $"
import os.path
from Thuban import _
import wx
from wx import grid
from Thuban.Lib.connector import Publisher
from Thuban.Model.table import FIELDTYPE_INT, FIELDTYPE_DOUBLE, \
FIELDTYPE_STRING, table_to_dbf, table_to_csv
from dialogs import ThubanFrame
from messages import SHAPES_SELECTED, SESSION_REPLACED
from Thuban.Model.messages import TABLE_REMOVED, MAP_LAYERS_REMOVED
from Thuban.UI import internal_from_wxstring
from Thuban.UI.common import ThubanBeginBusyCursor, ThubanEndBusyCursor
wx_value_type_map = {FIELDTYPE_INT: grid.GRID_VALUE_NUMBER,
FIELDTYPE_DOUBLE: grid.GRID_VALUE_FLOAT,
FIELDTYPE_STRING: grid.GRID_VALUE_STRING}
ROW_SELECTED = "ROW_SELECTED"
QUERY_KEY = 'S'
class DataTable(grid.PyGridTableBase):
"""Wrapper around a Thuban table object suitable for a wxGrid"""
def __init__(self, table = None):
grid.PyGridTableBase.__init__(self)
self.num_cols = 0
self.num_rows = 0
self.columns = []
self.table = None
self.SetTable(table)
def SetTable(self, table):
self.table = table
self.num_cols = table.NumColumns()
self.num_rows = table.NumRows()
self.columns = []
for i in range(self.num_cols):
col = table.Column(i)
self.columns.append((col.name, wx_value_type_map[col.type]))
#
# required methods for the wxPyGridTableBase interface
#
def GetNumberRows(self):
return self.num_rows
def GetNumberCols(self):
return self.num_cols
def IsEmptyCell(self, row, col):
return 0
# Get/Set values in the table. The Python version of these
# methods can handle any data-type, (as long as the Editor and
# Renderer understands the type too,) not just strings as in the
# C++ version.
def GetValue(self, row, col):
try:
record = self.table.ReadRowAsDict(row, row_is_ordinal = 1)
except UnicodeError:
record = dict()
for (key, val) in self.table.ReadRowAsDict(row, \
row_is_ordinal = 1).items():
if isinstance(val, str):
record[key] = val.decode('iso-8859-1')
else:
record[key] = val
return record[self.columns[col][0]]
def SetValue(self, row, col, value):
pass
#
# Some optional methods
#
# Called when the grid needs to display labels
def GetColLabelValue(self, col):
return self.columns[col][0]
# Called to determine the kind of editor/renderer to use by
# default, doesn't necessarily have to be the same type used
# nativly by the editor/renderer if they know how to convert.
def GetTypeName(self, row, col):
return self.columns[col][1]
# Called to determine how the data can be fetched and stored by the
# editor and renderer. This allows you to enforce some type-safety
# in the grid.
def CanGetValueAs(self, row, col, typeName):
# perhaps we should allow conversion int->double?
return self.GetTypeName(row, col) == typeName
def CanSetValueAs(self, row, col, typeName):
return self.CanGetValueAs(row, col, typeName)
#
def RowIdToOrdinal(self, rowid):
"""Return the ordinal of the row given by its id"""
return self.table.RowIdToOrdinal(rowid)
def RowOrdinalToId(self, ordinal):
"""Return the id of the row given by its ordinal"""
return self.table.RowOrdinalToId(ordinal)
class NullRenderer(grid.PyGridCellRenderer):
"""Renderer that draws NULL as a gray rectangle
Other values are delegated to a normal renderer which is given as
the parameter to the constructor.
"""
def __init__(self, non_null_renderer):
grid.PyGridCellRenderer.__init__(self)
self.non_null_renderer = non_null_renderer
def Draw(self, grid, attr, dc, rect, row, col, isSelected):
value = grid.table.GetValue(row, col)
if value is None:
dc.SetBackgroundMode(wx.SOLID)
dc.SetBrush(wx.Brush(wx.Colour(192, 192, 192), wx.SOLID))
dc.SetPen(wx.TRANSPARENT_PEN)
dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height)
else:
self.non_null_renderer.Draw(grid, attr, dc, rect, row, col,
isSelected)
def GetBestSize(self, grid, attr, dc, row, col):
self.non_null_renderer.GetBestSize(grid, attr, dc, row, col)
def Clone(self):
return NullRenderer(self.non_null_renderer)
class TableGrid(grid.Grid, Publisher):
"""A grid view for a Thuban table
When rows are selected by the user the table issues ROW_SELECTED
messages. wx sends selection events even when the selection is
manipulated by code (instead of by the user) which usually lead to
ROW_SELECTED messages being sent in turn. Therefore sending messages
can be switched on and off with the allow_messages and
disallow_messages methods.
"""
def __init__(self, parent, table = None):
grid.Grid.__init__(self, parent, -1)
self.allow_messages_count = 0
# keep track of which rows are selected.
self.rows = {}
self.table = DataTable(table)
# The second parameter means that the grid is to take ownership
# of the table and will destroy it when done. Otherwise you
# would need to keep a reference to it and call its Destroy
# method later.
self.SetTable(self.table, True)
#self.SetMargins(0,0)
# AutoSizeColumns would allow us to make the grid have optimal
# column widths automatically but it would cause a traversal of
# the entire table which for large .dbf files can take a very
# long time.
#self.AutoSizeColumns(False)
self.SetSelectionMode(grid.Grid.wxGridSelectRows)
self.ToggleEventListeners(True)
self.Bind(grid.EVT_GRID_RANGE_SELECT, self.OnRangeSelect)
self.Bind(grid.EVT_GRID_SELECT_CELL, self.OnSelectCell)
# Replace the normal renderers with our own versions which
# render NULL/None values specially
self.RegisterDataType(grid.GRID_VALUE_STRING,
NullRenderer(grid.GridCellStringRenderer()), None)
self.RegisterDataType(grid.GRID_VALUE_NUMBER,
NullRenderer(grid.GridCellNumberRenderer()), None)
self.RegisterDataType(grid.GRID_VALUE_FLOAT,
NullRenderer(grid.GridCellFloatRenderer()), None)
self.Bind(wx.EVT_WINDOW_DESTROY, self.OnDestroy)
def OnDestroy(self, event):
Publisher.Destroy(self)
def SetTableObject(self, table):
self.table.SetTable(table)
def OnRangeSelect(self, event):
to_id = self.table.RowOrdinalToId
if self.handleSelectEvents:
self.rows = dict([(to_id(i), 0) for i in self.GetSelectedRows()])
# if we're selecting we need to include the selected range and
# make sure that the current row is also included, which may
# not be the case if you just click on a single row!
if event.Selecting():
for i in range(event.GetTopRow(), event.GetBottomRow() + 1):
self.rows[to_id(i)] = 0
self.rows[to_id(event.GetTopLeftCoords().GetRow())] = 0
self.issue(ROW_SELECTED, self.rows.keys())
event.Skip()
def OnSelectCell(self, event):
to_id = self.table.RowOrdinalToId
if self.handleSelectEvents:
self.issue(ROW_SELECTED,
[to_id(i) for i in self.GetSelectedRows()])
event.Skip()
def ToggleEventListeners(self, on):
self.handleSelectEvents = on
def GetNumberSelected(self):
return len(self.rows)
def disallow_messages(self):
"""Disallow messages to be send.
This method only increases a counter so that calls to
disallow_messages and allow_messages can be nested. Only the
outermost calls will actually switch message sending on and off.
"""
self.allow_messages_count += 1
def allow_messages(self):
"""Allow messages to be send.
This method only decreases a counter so that calls to
disallow_messages and allow_messages can be nested. Only the
outermost calls will actually switch message sending on and off.
"""
self.allow_messages_count -= 1
def issue(self, *args):
"""Issue a message unless disallowed.
See the allow_messages and disallow_messages methods.
"""
if self.allow_messages_count == 0:
Publisher.issue(self, *args)
def SelectRowById(self, rowid, do_select):
"""Select row with the id rowid"""
self.SelectRow(self.table.RowIdToOrdinal(rowid), do_select)
class LayerTableGrid(TableGrid):
"""Table grid for the layer tables.
The LayerTableGrid is basically the same as a TableGrid but it's
selection is usually coupled to the selected object in the map.
"""
def select_shapes(self, layer, shapes):
"""Select the row corresponding to the specified shape and layer
If layer is not the layer the table is associated with do
nothing. If shape or layer is None also do nothing.
"""
if layer is not None \
and layer.ShapeStore().Table() is self.table.table:
self.disallow_messages()
try:
self.ClearSelection()
if len(shapes) > 0:
# keep track of the lowest id so we can make it the
# first visible item
first = -1
to_ordinal = self.table.RowIdToOrdinal
for shape in shapes:
row = to_ordinal(shape)
self.SelectRow(row, True)
if row < first:
first = row
self.SetGridCursor(first, 0)
self.MakeCellVisible(first, 0)
finally:
self.allow_messages()
class TableFrame(ThubanFrame):
"""Frame that displays a Thuban table in a grid view"""
def __init__(self, parent, name, title, table):
ThubanFrame.__init__(self, parent, name, title)
self.panel = wx.Panel(self, -1)
self.table = table
self.grid = self.make_grid(self.table)
self.app = self.parent.application
self.app.Subscribe(SESSION_REPLACED, self.close_on_session_replaced)
self.session = self.app.Session()
self.session.Subscribe(TABLE_REMOVED, self.close_on_table_removed)
def OnDestroy(self, event):
"""Extend inherited method to unsubscribe messages"""
self.app.Unsubscribe(SESSION_REPLACED, self.close_on_session_replaced)
self.session.Unsubscribe(TABLE_REMOVED, self.close_on_table_removed)
ThubanFrame.OnDestroy(self, event)
def make_grid(self, table):
"""Return the table grid to use in the frame.
The default implementation returns a TableGrid instance.
Override in derived classes to use different grid classes.
"""
return TableGrid(self, table)
def close_on_session_replaced(self, *args):
"""Subscriber for the SESSION_REPLACED messages.
The table frame is tied to a session so close the window when
the session changes.
"""
self.Close()
def close_on_table_removed(self, table):
"""Subscriber for the TABLE_REMOVED messages.
The table frame is tied to a particular table so close the
window when the table is removed.
"""
if table is self.table:
self.Close()
ID_QUERY = 4001
ID_EXPORT = 4002
ID_COMBOVALUE = 4003
ID_EXPORTSEL = 4004
class QueryTableFrame(TableFrame):
"""Frame that displays a table in a grid view and offers user actions
selection and export
A QueryTableFrame is TableFrame whose selection is connected to the
selected object in a map.
"""
def __init__(self, parent, name, title, table):
TableFrame.__init__(self, parent, name, title, table)
self.combo_fields = wx.ComboBox(self.panel, -1, style=wx.CB_READONLY)
self.choice_comp = wx.Choice(self.panel, -1,
choices=["<", "<=", "==", "!=", ">=", ">"])
self.combo_value = wx.ComboBox(self.panel, ID_COMBOVALUE)
self.choice_action = wx.Choice(self.panel, -1,
choices=[_("Replace Selection"),
_("Refine Selection"),
_("Add to Selection")])
button_query = wx.Button(self.panel, ID_QUERY, _("Query"))
button_export = wx.Button(self.panel, ID_EXPORT, _("Export"))
button_exportSel = wx.Button(self.panel, ID_EXPORTSEL, _("Export Selection"))
button_close = wx.Button(self.panel, wx.ID_CLOSE, _("Close"))
self.CreateStatusBar()
self.grid.SetSize((400, 200))
self.combo_value.Append("")
for i in range(table.NumColumns()):
name = table.Column(i).name
self.combo_fields.Append(name)
self.combo_value.Append(name)
# assume at least one field?
self.combo_fields.SetSelection(0)
self.combo_value.SetSelection(0)
self.choice_action.SetSelection(0)
self.choice_comp.SetSelection(0)
self.grid.Reparent(self.panel)
self.UpdateStatusText()
topBox = wx.BoxSizer(wx.VERTICAL)
sizer = wx.StaticBoxSizer(wx.StaticBox(self.panel, -1,
_("Selection")),
wx.HORIZONTAL)
sizer.Add(self.combo_fields, 1, wx.EXPAND|wx.ALL, 4)
sizer.Add(self.choice_comp, 0, wx.ALL, 4)
sizer.Add(self.combo_value, 1, wx.EXPAND|wx.ALL, 4)
sizer.Add(self.choice_action, 0, wx.ALL, 4)
sizer.Add(button_query, 0, wx.ALL | wx.ALIGN_CENTER_VERTICAL, 4)
sizer.Add( (40, 20), 0, wx.ALL, 4)
topBox.Add(sizer, 0, wx.EXPAND|wx.ALL, 4)
topBox.Add(self.grid, 1, wx.EXPAND|wx.ALL, 0)
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.Add(button_export, 0, wx.ALL, 4)
sizer.Add(button_exportSel, 0, wx.ALL, 4)
sizer.Add( (60, 20), 1, wx.ALL|wx.EXPAND, 4)
sizer.Add(button_close, 0, wx.ALL|wx.ALIGN_RIGHT, 4)
topBox.Add(sizer, 0, wx.ALL | wx.EXPAND, 4)
self.panel.SetAutoLayout(True)
self.panel.SetSizer(topBox)
topBox.Fit(self.panel)
topBox.SetSizeHints(self.panel)
panelSizer = wx.BoxSizer(wx.VERTICAL)
panelSizer.Add(self.panel, 1, wx.EXPAND, 0)
self.SetAutoLayout(True)
self.SetSizer(panelSizer)
panelSizer.Fit(self)
panelSizer.SetSizeHints(self)
self.grid.SetFocus()
self.Bind(wx.EVT_BUTTON, self.OnQuery, id=ID_QUERY)
self.Bind(wx.EVT_BUTTON, self.OnExport, id=ID_EXPORT)
self.Bind(wx.EVT_BUTTON, self.OnExportSel, id=ID_EXPORTSEL)
self.Bind(wx.EVT_BUTTON, self.OnClose, id=wx.ID_CLOSE)
self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown, self.grid)
self.grid.Subscribe(ROW_SELECTED, self.UpdateStatusText)
def UpdateStatusText(self, rows=None):
self.SetStatusText(_("%i rows (%i selected), %i columns")
% (self.grid.GetNumberRows(),
self.grid.GetNumberSelected(),
self.grid.GetNumberCols()))
def OnKeyDown(self, event):
"""Catch query key from grid"""
if event.AltDown() and event.GetKeyCode() == ord(QUERY_KEY):
self.combo_fields.SetFocus()
self.combo_fields.refocus = True
else:
event.Skip()
def OnQuery(self, event):
ThubanBeginBusyCursor()
try:
text = self.combo_value.GetValue()
if self.combo_value.GetSelection() < 1 \
or self.combo_value.FindString(text) == -1:
value = text
else:
value = self.table.Column(text)
ids = self.table.SimpleQuery(
self.table.Column(self.combo_fields.GetStringSelection()),
self.choice_comp.GetStringSelection(),
value)
choice = self.choice_action.GetSelection()
#
# what used to be nice code got became a bit ugly because
# each time we select a row a message is sent to the grid
# which we are listening for and then we send further
# messages.
#
# now, we disable those listeners select everything but
# the first item, reenable the listeners, and select
# the first element, which causes everything to be
# updated properly.
#
if ids:
self.grid.ToggleEventListeners(False)
if choice == 0:
# Replace Selection
self.grid.ClearSelection()
elif choice == 1:
# Refine Selection
sel = self.get_selected()
self.grid.ClearSelection()
ids = filter(sel.has_key, ids)
elif choice == 2:
# Add to Selection
pass
#
# select the rows (all but the first)
#
firsttime = True
for id in ids:
if firsttime:
firsttime = False
else:
self.grid.SelectRowById(id, True)
self.grid.ToggleEventListeners(True)
#
# select the first row
#
if ids:
self.grid.SelectRowById(ids[0], True)
finally:
ThubanEndBusyCursor()
def doExport(self, onlySelected):
dlg = wx.FileDialog(self, _("Export Table To"), ".", "",
_("DBF Files (*.dbf)|*.dbf|") +
_("CSV Files (*.csv)|*.csv|") +
_("All Files (*.*)|*.*"),
wx.SAVE|wx.OVERWRITE_PROMPT)
if dlg.ShowModal() == wx.ID_OK:
filename = internal_from_wxstring(dlg.GetPath())
type = os.path.basename(filename).split('.')[-1:][0]
dlg.Destroy()
if onlySelected:
records = self.grid.GetSelectedRows()
else:
records = None
if type.upper() == "DBF":
table_to_dbf(self.table, filename, records)
elif type.upper() == 'CSV':
table_to_csv(self.table, filename, records)
else:
dlg = wx.MessageDialog(None, "Unsupported format: %s" % type,
"Table Export", wx.OK|wx.ICON_WARNING)
dlg.ShowModal()
dlg.Destroy()
else:
dlg.Destroy()
def OnExport(self, event):
self.doExport(False)
def OnExportSel(self, event):
self.doExport(True)
def OnClose(self, event):
TableFrame.OnClose(self, event)
def get_selected(self):
"""Return a dictionary of the selected rows.
The dictionary has the indexes as keys."""
to_id = self.table.RowOrdinalToId
return dict([(to_id(i), 0) for i in self.grid.GetSelectedRows()])
class LayerTableFrame(QueryTableFrame):
"""Frame that displays a layer table in a grid view
A LayerTableFrame is a QueryTableFrame whose selection is connected to the
selected object in a map.
"""
def __init__(self, parent, name, title, layer, table):
QueryTableFrame.__init__(self, parent, name, title, table)
self.layer = layer
self.grid.Subscribe(ROW_SELECTED, self.rows_selected)
self.parent.Subscribe(SHAPES_SELECTED, self.select_shapes)
self.map = self.parent.Map()
self.map.Subscribe(MAP_LAYERS_REMOVED, self.map_layers_removed)
# if there is already a selection present, update the grid
# accordingly
sel = self.get_selected().keys()
for i in sel:
self.grid.SelectRowById(i, True)
def OnDestroy(self, event):
"""Extend inherited method to unsubscribe messages"""
# There's no need to unsubscribe from self.grid's messages
# because it will get a DESTROY event too (since destroying the
# frame basically means that all child windows are also
# destroyed) and this it will clear all subscriptions
# automatically. It may even have been destroyed already (this
# does happen on w2000 for instance) so calling any of its
# methods here would be an error.
self.parent.Unsubscribe(SHAPES_SELECTED, self.select_shapes)
self.map.Unsubscribe(MAP_LAYERS_REMOVED, self.map_layers_removed)
QueryTableFrame.OnDestroy(self, event)
def make_grid(self, table):
"""Override the derived method to return a LayerTableGrid.
"""
return LayerTableGrid(self, table)
def get_selected(self):
"""Override the derived method to return a dictionary of the selected
rows.
"""
return dict([(i, 0) for i in self.parent.SelectedShapes()])
def select_shapes(self, layer, shapes):
"""Subscribed to the SHAPES_SELECTED message.
If shapes contains exactly one shape id, select that shape in
the grid. Otherwise deselect all.
"""
self.grid.select_shapes(layer, shapes)
def rows_selected(self, rows):
"""Return the selected rows of the layer as they are returned
by Layer.SelectShapes().
"""
if self.layer is not None:
self.parent.SelectShapes(self.layer, rows)
def map_layers_removed(self, *args):
"""Receiver for the map's MAP_LAYERS_REMOVED message
Close the dialog if the layer whose table we're showing is not
in the map anymore.
"""
if self.layer not in self.map.Layers():
self.Close()
|