42a04f70db
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33557 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
613 lines
21 KiB
Python
613 lines
21 KiB
Python
#----------------------------------------------------------------------------
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# Name: wxPython.lib.mixins.listctrl
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# Purpose: Helpful mix-in classes for wxListCtrl
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#
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# Author: Robin Dunn
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#
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# Created: 15-May-2001
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# RCS-ID: $Id$
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# Copyright: (c) 2001 by Total Control Software
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# Licence: wxWindows license
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#----------------------------------------------------------------------------
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# 12/14/2003 - Jeff Grimmett (grimmtooth@softhome.net)
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#
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# o 2.5 compatability update.
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# o ListCtrlSelectionManagerMix untested.
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#
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# 12/21/2003 - Jeff Grimmett (grimmtooth@softhome.net)
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#
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# o wxColumnSorterMixin -> ColumnSorterMixin
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# o wxListCtrlAutoWidthMixin -> ListCtrlAutoWidthMixin
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# ...
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# 13/10/2004 - Pim Van Heuven (pim@think-wize.com)
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# o wxTextEditMixin: Support Horizontal scrolling when TAB is pressed on long
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# ListCtrls, support for WXK_DOWN, WXK_UP, performance improvements on
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# very long ListCtrls, Support for virtual ListCtrls
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#
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# 15-Oct-2004 - Robin Dunn
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# o wxTextEditMixin: Added Shift-TAB support
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#
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import locale
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import wx
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#----------------------------------------------------------------------------
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class ColumnSorterMixin:
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"""
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A mixin class that handles sorting of a wx.ListCtrl in REPORT mode when
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the column header is clicked on.
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There are a few requirments needed in order for this to work genericly:
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1. The combined class must have a GetListCtrl method that
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returns the wx.ListCtrl to be sorted, and the list control
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must exist at the time the wx.ColumnSorterMixin.__init__
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method is called because it uses GetListCtrl.
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2. Items in the list control must have a unique data value set
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with list.SetItemData.
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3. The combined class must have an attribute named itemDataMap
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that is a dictionary mapping the data values to a sequence of
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objects representing the values in each column. These values
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are compared in the column sorter to determine sort order.
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Interesting methods to override are GetColumnSorter,
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GetSecondarySortValues, and GetSortImages. See below for details.
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"""
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def __init__(self, numColumns):
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self.SetColumnCount(numColumns)
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list = self.GetListCtrl()
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if not list:
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raise ValueError, "No wx.ListCtrl available"
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self.Bind(wx.EVT_LIST_COL_CLICK, self.__OnColClick, list)
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def SetColumnCount(self, newNumColumns):
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self._colSortFlag = [0] * newNumColumns
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self._col = -1
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def SortListItems(self, col=-1, ascending=1):
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"""Sort the list on demand. Can also be used to set the sort column and order."""
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oldCol = self._col
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if col != -1:
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self._col = col
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self._colSortFlag[col] = ascending
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self.GetListCtrl().SortItems(self.GetColumnSorter())
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self.__updateImages(oldCol)
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def GetColumnWidths(self):
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"""
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Returns a list of column widths. Can be used to help restore the current
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view later.
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"""
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list = self.GetListCtrl()
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rv = []
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for x in range(len(self._colSortFlag)):
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rv.append(list.GetColumnWidth(x))
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return rv
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def GetSortImages(self):
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"""
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Returns a tuple of image list indexesthe indexes in the image list for an image to be put on the column
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header when sorting in descending order.
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"""
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return (-1, -1) # (decending, ascending) image IDs
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def GetColumnSorter(self):
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"""Returns a callable object to be used for comparing column values when sorting."""
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return self.__ColumnSorter
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def GetSecondarySortValues(self, col, key1, key2):
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"""Returns a tuple of 2 values to use for secondary sort values when the
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items in the selected column match equal. The default just returns the
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item data values."""
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return (key1, key2)
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def __OnColClick(self, evt):
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oldCol = self._col
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self._col = col = evt.GetColumn()
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self._colSortFlag[col] = not self._colSortFlag[col]
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self.GetListCtrl().SortItems(self.GetColumnSorter())
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self.__updateImages(oldCol)
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evt.Skip()
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def __ColumnSorter(self, key1, key2):
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col = self._col
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ascending = self._colSortFlag[col]
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item1 = self.itemDataMap[key1][col]
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item2 = self.itemDataMap[key2][col]
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#--- Internationalization of string sorting with locale module
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if type(item1) == type('') or type(item2) == type(''):
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cmpVal = locale.strcoll(str(item1), str(item2))
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else:
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cmpVal = cmp(item1, item2)
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#---
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# If the items are equal then pick something else to make the sort value unique
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if cmpVal == 0:
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cmpVal = apply(cmp, self.GetSecondarySortValues(col, key1, key2))
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if ascending:
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return cmpVal
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else:
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return -cmpVal
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def __updateImages(self, oldCol):
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sortImages = self.GetSortImages()
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if self._col != -1 and sortImages[0] != -1:
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img = sortImages[self._colSortFlag[self._col]]
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list = self.GetListCtrl()
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if oldCol != -1:
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list.ClearColumnImage(oldCol)
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list.SetColumnImage(self._col, img)
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#----------------------------------------------------------------------------
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#----------------------------------------------------------------------------
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class ListCtrlAutoWidthMixin:
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""" A mix-in class that automatically resizes the last column to take up
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the remaining width of the wx.ListCtrl.
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This causes the wx.ListCtrl to automatically take up the full width of
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the list, without either a horizontal scroll bar (unless absolutely
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necessary) or empty space to the right of the last column.
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NOTE: This only works for report-style lists.
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WARNING: If you override the EVT_SIZE event in your wx.ListCtrl, make
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sure you call event.Skip() to ensure that the mixin's
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_OnResize method is called.
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This mix-in class was written by Erik Westra <ewestra@wave.co.nz>
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"""
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def __init__(self):
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""" Standard initialiser.
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"""
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self._resizeColMinWidth = None
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self._resizeColStyle = "LAST"
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self._resizeCol = 0
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self.Bind(wx.EVT_SIZE, self._onResize)
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self.Bind(wx.EVT_LIST_COL_END_DRAG, self._onResize, self)
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def setResizeColumn(self, col):
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"""
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Specify which column that should be autosized. Pass either
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'LAST' or the column number. Default is 'LAST'.
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"""
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if col == "LAST":
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self._resizeColStyle = "LAST"
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else:
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self._resizeColStyle = "COL"
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self._resizeCol = col
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def resizeLastColumn(self, minWidth):
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""" Resize the last column appropriately.
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If the list's columns are too wide to fit within the window, we use
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a horizontal scrollbar. Otherwise, we expand the right-most column
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to take up the remaining free space in the list.
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This method is called automatically when the wx.ListCtrl is resized;
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you can also call it yourself whenever you want the last column to
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be resized appropriately (eg, when adding, removing or resizing
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columns).
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'minWidth' is the preferred minimum width for the last column.
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"""
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self.resizeColumn(self, minWidth)
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def resizeColumn(self, minWidth):
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self._resizeColMinWidth = minWidth
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self._doResize()
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# =====================
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# == Private Methods ==
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# =====================
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def _onResize(self, event):
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""" Respond to the wx.ListCtrl being resized.
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We automatically resize the last column in the list.
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"""
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wx.CallAfter(self._doResize)
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event.Skip()
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def _doResize(self):
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""" Resize the last column as appropriate.
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If the list's columns are too wide to fit within the window, we use
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a horizontal scrollbar. Otherwise, we expand the right-most column
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to take up the remaining free space in the list.
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We remember the current size of the last column, before resizing,
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as the preferred minimum width if we haven't previously been given
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or calculated a minimum width. This ensure that repeated calls to
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_doResize() don't cause the last column to size itself too large.
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"""
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if not self: # avoid a PyDeadObject error
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return
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numCols = self.GetColumnCount()
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if numCols == 0: return # Nothing to resize.
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if(self._resizeColStyle == "LAST"):
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resizeCol = self.GetColumnCount()
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else:
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resizeCol = self._resizeCol
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if self._resizeColMinWidth == None:
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self._resizeColMinWidth = self.GetColumnWidth(resizeCol - 1)
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# We're showing the vertical scrollbar -> allow for scrollbar width
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# NOTE: on GTK, the scrollbar is included in the client size, but on
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# Windows it is not included
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listWidth = self.GetClientSize().width
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if wx.Platform != '__WXMSW__':
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if self.GetItemCount() > self.GetCountPerPage():
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scrollWidth = wx.SystemSettings_GetMetric(wx.SYS_VSCROLL_X)
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listWidth = listWidth - scrollWidth
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totColWidth = 0 # Width of all columns except last one.
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for col in range(numCols):
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if col != (resizeCol-1):
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totColWidth = totColWidth + self.GetColumnWidth(col)
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resizeColWidth = self.GetColumnWidth(resizeCol - 1)
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if totColWidth + self._resizeColMinWidth > listWidth:
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# We haven't got the width to show the last column at its minimum
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# width -> set it to its minimum width and allow the horizontal
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# scrollbar to show.
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self.SetColumnWidth(resizeCol-1, self._resizeColMinWidth)
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return
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# Resize the last column to take up the remaining available space.
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self.SetColumnWidth(resizeCol-1, listWidth - totColWidth)
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#----------------------------------------------------------------------------
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SEL_FOC = wx.LIST_STATE_SELECTED | wx.LIST_STATE_FOCUSED
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def selectBeforePopup(event):
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"""Ensures the item the mouse is pointing at is selected before a popup.
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Works with both single-select and multi-select lists."""
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ctrl = event.GetEventObject()
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if isinstance(ctrl, wx.ListCtrl):
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n, flags = ctrl.HitTest(event.GetPosition())
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if n >= 0:
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if not ctrl.GetItemState(n, wx.LIST_STATE_SELECTED):
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for i in range(ctrl.GetItemCount()):
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ctrl.SetItemState(i, 0, SEL_FOC)
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#for i in getListCtrlSelection(ctrl, SEL_FOC):
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# ctrl.SetItemState(i, 0, SEL_FOC)
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ctrl.SetItemState(n, SEL_FOC, SEL_FOC)
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def getListCtrlSelection(listctrl, state=wx.LIST_STATE_SELECTED):
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""" Returns list of item indexes of given state (selected by defaults) """
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res = []
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idx = -1
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while 1:
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idx = listctrl.GetNextItem(idx, wx.LIST_NEXT_ALL, state)
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if idx == -1:
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break
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res.append(idx)
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return res
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wxEVT_DOPOPUPMENU = wx.NewEventType()
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EVT_DOPOPUPMENU = wx.PyEventBinder(wxEVT_DOPOPUPMENU, 0)
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class ListCtrlSelectionManagerMix:
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"""Mixin that defines a platform independent selection policy
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As selection single and multi-select list return the item index or a
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list of item indexes respectively.
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"""
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_menu = None
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def __init__(self):
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self.Bind(wx.EVT_RIGHT_DOWN, self.OnLCSMRightDown)
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self.Bind(EVT_DOPOPUPMENU, self.OnLCSMDoPopup)
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# self.Connect(-1, -1, self.wxEVT_DOPOPUPMENU, self.OnLCSMDoPopup)
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def getPopupMenu(self):
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""" Override to implement dynamic menus (create) """
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return self._menu
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def setPopupMenu(self, menu):
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""" Must be set for default behaviour """
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self._menu = menu
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def afterPopupMenu(self, menu):
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""" Override to implement dynamic menus (destroy) """
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pass
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def getSelection(self):
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res = getListCtrlSelection(self)
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if self.GetWindowStyleFlag() & wx.LC_SINGLE_SEL:
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if res:
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return res[0]
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else:
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return -1
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else:
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return res
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def OnLCSMRightDown(self, event):
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selectBeforePopup(event)
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event.Skip()
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menu = self.getPopupMenu()
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if menu:
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evt = wx.PyEvent()
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evt.SetEventType(wxEVT_DOPOPUPMENU)
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evt.menu = menu
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evt.pos = event.GetPosition()
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wx.PostEvent(self, evt)
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def OnLCSMDoPopup(self, event):
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self.PopupMenu(event.menu, event.pos)
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self.afterPopupMenu(event.menu)
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#----------------------------------------------------------------------------
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from bisect import bisect
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class TextEditMixin:
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"""
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A mixin class that enables any text in any column of a
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multi-column listctrl to be edited by clicking on the given row
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and column. You close the text editor by hitting the ENTER key or
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clicking somewhere else on the listctrl. You switch to the next
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column by hiting TAB.
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To use the mixin you have to include it in the class definition
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and call the __init__ function::
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class TestListCtrl(wx.ListCtrl, TextEditMixin):
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def __init__(self, parent, ID, pos=wx.DefaultPosition,
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size=wx.DefaultSize, style=0):
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wx.ListCtrl.__init__(self, parent, ID, pos, size, style)
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TextEditMixin.__init__(self)
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Authors: Steve Zatz, Pim Van Heuven (pim@think-wize.com)
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"""
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editorBgColour = wx.Colour(255,255,175) # Yellow
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editorFgColour = wx.Colour(0,0,0) # black
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def __init__(self):
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#editor = wx.TextCtrl(self, -1, pos=(-1,-1), size=(-1,-1),
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# style=wx.TE_PROCESS_ENTER|wx.TE_PROCESS_TAB \
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# |wx.TE_RICH2)
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self.make_editor()
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self.Bind(wx.EVT_TEXT_ENTER, self.CloseEditor)
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self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
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self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDown)
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self.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnItemSelected)
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def make_editor(self, col_style=wx.LIST_FORMAT_LEFT):
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editor = wx.PreTextCtrl()
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style =wx.TE_PROCESS_ENTER|wx.TE_PROCESS_TAB|wx.TE_RICH2
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style |= {wx.LIST_FORMAT_LEFT: wx.TE_LEFT,
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wx.LIST_FORMAT_RIGHT: wx.TE_RIGHT,
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wx.LIST_FORMAT_CENTRE : wx.TE_CENTRE
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}[col_style]
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editor.Create(self, -1, style=style)
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editor.SetBackgroundColour(self.editorBgColour)
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editor.SetForegroundColour(self.editorFgColour)
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font = self.GetFont()
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editor.SetFont(font)
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self.curRow = 0
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self.curCol = 0
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editor.Hide()
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self.editor = editor
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self.col_style = col_style
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self.editor.Bind(wx.EVT_CHAR, self.OnChar)
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self.editor.Bind(wx.EVT_KILL_FOCUS, self.CloseEditor)
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def OnItemSelected(self, evt):
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self.curRow = evt.GetIndex()
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evt.Skip()
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def OnChar(self, event):
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''' Catch the TAB, Shift-TAB, cursor DOWN/UP key code
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so we can open the editor at the next column (if any).'''
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keycode = event.GetKeyCode()
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if keycode == wx.WXK_TAB and event.ShiftDown():
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self.CloseEditor()
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if self.curCol-1 >= 0:
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self.OpenEditor(self.curCol-1, self.curRow)
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elif keycode == wx.WXK_TAB:
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self.CloseEditor()
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if self.curCol+1 < self.GetColumnCount():
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self.OpenEditor(self.curCol+1, self.curRow)
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elif keycode == wx.WXK_ESCAPE:
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self.CloseEditor()
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elif keycode == wx.WXK_DOWN:
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self.CloseEditor()
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if self.curRow+1 < self.GetItemCount():
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self._SelectIndex(self.curRow+1)
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self.OpenEditor(self.curCol, self.curRow)
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elif keycode == wx.WXK_UP:
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self.CloseEditor()
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if self.curRow > 0:
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self._SelectIndex(self.curRow-1)
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self.OpenEditor(self.curCol, self.curRow)
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else:
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event.Skip()
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def OnLeftDown(self, evt=None):
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''' Examine the click and double
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click events to see if a row has been click on twice. If so,
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determine the current row and columnn and open the editor.'''
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if self.editor.IsShown():
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self.CloseEditor()
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x,y = evt.GetPosition()
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row,flags = self.HitTest((x,y))
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if row != self.curRow: # self.curRow keeps track of the current row
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evt.Skip()
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return
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# the following should really be done in the mixin's init but
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# the wx.ListCtrl demo creates the columns after creating the
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# ListCtrl (generally not a good idea) on the other hand,
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# doing this here handles adjustable column widths
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self.col_locs = [0]
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loc = 0
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for n in range(self.GetColumnCount()):
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loc = loc + self.GetColumnWidth(n)
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self.col_locs.append(loc)
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col = bisect(self.col_locs, x+self.GetScrollPos(wx.HORIZONTAL)) - 1
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self.OpenEditor(col, row)
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def OpenEditor(self, col, row):
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''' Opens an editor at the current position. '''
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if self.GetColumn(col).m_format != self.col_style:
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self.make_editor(self.GetColumn(col).m_format)
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x0 = self.col_locs[col]
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x1 = self.col_locs[col+1] - x0
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|
|
|
scrolloffset = self.GetScrollPos(wx.HORIZONTAL)
|
|
|
|
# scroll forward
|
|
if x0+x1-scrolloffset > self.GetSize()[0]:
|
|
if wx.Platform == "__WXMSW__":
|
|
# don't start scrolling unless we really need to
|
|
offset = x0+x1-self.GetSize()[0]-scrolloffset
|
|
# scroll a bit more than what is minimum required
|
|
# so we don't have to scroll everytime the user presses TAB
|
|
# which is very tireing to the eye
|
|
addoffset = self.GetSize()[0]/4
|
|
# but be careful at the end of the list
|
|
if addoffset + scrolloffset < self.GetSize()[0]:
|
|
offset += addoffset
|
|
|
|
self.ScrollList(offset, 0)
|
|
scrolloffset = self.GetScrollPos(wx.HORIZONTAL)
|
|
else:
|
|
# Since we can not programmatically scroll the ListCtrl
|
|
# close the editor so the user can scroll and open the editor
|
|
# again
|
|
self.editor.SetValue(self.GetItem(row, col).GetText())
|
|
self.curRow = row
|
|
self.curCol = col
|
|
self.CloseEditor()
|
|
return
|
|
|
|
y0 = self.GetItemRect(row)[1]
|
|
|
|
editor = self.editor
|
|
editor.SetDimensions(x0-scrolloffset,y0, x1,-1)
|
|
|
|
editor.SetValue(self.GetItem(row, col).GetText())
|
|
editor.Show()
|
|
editor.Raise()
|
|
editor.SetSelection(-1,-1)
|
|
editor.SetFocus()
|
|
|
|
self.curRow = row
|
|
self.curCol = col
|
|
|
|
|
|
# FIXME: this function is usually called twice - second time because
|
|
# it is binded to wx.EVT_KILL_FOCUS. Can it be avoided? (MW)
|
|
def CloseEditor(self, evt=None):
|
|
''' Close the editor and save the new value to the ListCtrl. '''
|
|
text = self.editor.GetValue()
|
|
self.editor.Hide()
|
|
self.SetFocus()
|
|
|
|
# post wxEVT_COMMAND_LIST_END_LABEL_EDIT
|
|
# Event can be vetoed. It doesn't has SetEditCanceled(), what would
|
|
# require passing extra argument to CloseEditor()
|
|
evt = wx.ListEvent(wx.wxEVT_COMMAND_LIST_END_LABEL_EDIT, self.GetId())
|
|
evt.m_itemIndex = self.curRow
|
|
evt.m_col = self.curCol
|
|
item = self.GetItem(self.curRow, self.curCol)
|
|
evt.m_item.SetId(item.GetId())
|
|
evt.m_item.SetColumn(item.GetColumn())
|
|
evt.m_item.SetData(item.GetData())
|
|
evt.m_item.SetText(text) #should be empty string if editor was canceled
|
|
ret = self.GetEventHandler().ProcessEvent(evt)
|
|
if not ret or evt.IsAllowed():
|
|
if self.IsVirtual():
|
|
# replace by whather you use to populate the virtual ListCtrl
|
|
# data source
|
|
self.SetVirtualData(self.curRow, self.curCol, text)
|
|
else:
|
|
self.SetStringItem(self.curRow, self.curCol, text)
|
|
self.RefreshItem(self.curRow)
|
|
|
|
def _SelectIndex(self, row):
|
|
listlen = self.GetItemCount()
|
|
if row < 0 and not listlen:
|
|
return
|
|
if row > (listlen-1):
|
|
row = listlen -1
|
|
|
|
self.SetItemState(self.curRow, ~wx.LIST_STATE_SELECTED,
|
|
wx.LIST_STATE_SELECTED)
|
|
self.EnsureVisible(row)
|
|
self.SetItemState(row, wx.LIST_STATE_SELECTED,
|
|
wx.LIST_STATE_SELECTED)
|
|
|
|
|
|
|
|
#----------------------------------------------------------------------------
|