a3cee65ed4
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41077 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
910 lines
32 KiB
Python
910 lines
32 KiB
Python
#----------------------------------------------------------------------------
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# Name: wxPython.lib.intctrl.py
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# Author: Will Sadkin
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# Created: 01/16/2003
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# Copyright: (c) 2003 by Will Sadkin
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# RCS-ID: $Id$
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# License: wxWindows license
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#----------------------------------------------------------------------------
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# NOTE:
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# This was written to provide a standard integer edit control for wxPython.
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#
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# IntCtrl permits integer (long) values to be retrieved or set via
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# .GetValue() and .SetValue(), and provides an EVT_INT() event function
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# for trapping changes to the control.
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#
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# It supports negative integers as well as the naturals, and does not
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# permit leading zeros or an empty control; attempting to delete the
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# contents of the control will result in a (selected) value of zero,
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# thus preserving a legitimate integer value, or an empty control
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# (if a value of None is allowed for the control.) Similarly, replacing the
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# contents of the control with '-' will result in a selected (absolute)
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# value of -1.
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#
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# IntCtrl also supports range limits, with the option of either
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# enforcing them or simply coloring the text of the control if the limits
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# are exceeded.
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#----------------------------------------------------------------------------
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# 12/08/2003 - Jeff Grimmett (grimmtooth@softhome.net)
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#
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# o 2.5 Compatability changes
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#
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# 12/20/2003 - Jeff Grimmett (grimmtooth@softhome.net)
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#
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# o wxIntUpdateEvent -> IntUpdateEvent
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# o wxIntValidator -> IntValidator
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# o wxIntCtrl -> IntCtrl
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#
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import string
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import types
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import wx
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#----------------------------------------------------------------------------
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from sys import maxint
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MAXINT = maxint # (constants should be in upper case)
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MININT = -maxint-1
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#----------------------------------------------------------------------------
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# Used to trap events indicating that the current
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# integer value of the control has been changed.
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wxEVT_COMMAND_INT_UPDATED = wx.NewEventType()
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EVT_INT = wx.PyEventBinder(wxEVT_COMMAND_INT_UPDATED, 1)
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#----------------------------------------------------------------------------
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# wxWindows' wxTextCtrl translates Composite "control key"
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# events into single events before returning them to its OnChar
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# routine. The doc says that this results in 1 for Ctrl-A, 2 for
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# Ctrl-B, etc. However, there are no wxPython or wxWindows
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# symbols for them, so I'm defining codes for Ctrl-X (cut) and
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# Ctrl-V (paste) here for readability:
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WXK_CTRL_X = (ord('X')+1) - ord('A')
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WXK_CTRL_V = (ord('V')+1) - ord('A')
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class IntUpdatedEvent(wx.PyCommandEvent):
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def __init__(self, id, value = 0, object=None):
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wx.PyCommandEvent.__init__(self, wxEVT_COMMAND_INT_UPDATED, id)
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self.__value = value
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self.SetEventObject(object)
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def GetValue(self):
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"""Retrieve the value of the control at the time
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this event was generated."""
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return self.__value
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#----------------------------------------------------------------------------
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class IntValidator( wx.PyValidator ):
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"""
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Validator class used with IntCtrl; handles all validation of input
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prior to changing the value of the underlying wx.TextCtrl.
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"""
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def __init__(self):
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wx.PyValidator.__init__(self)
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self.Bind(wx.EVT_CHAR, self.OnChar)
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def Clone (self):
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return self.__class__()
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def Validate(self, window): # window here is the *parent* of the ctrl
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"""
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Because each operation on the control is vetted as it's made,
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the value of the control is always valid.
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"""
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return 1
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def OnChar(self, event):
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"""
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Validates keystrokes to make sure the resulting value will a legal
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value. Erasing the value causes it to be set to 0, with the value
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selected, so it can be replaced. Similarly, replacing the value
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with a '-' sign causes the value to become -1, with the value
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selected. Leading zeros are removed if introduced by selection,
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and are prevented from being inserted.
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"""
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key = event.GetKeyCode()
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ctrl = event.GetEventObject()
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value = ctrl.GetValue()
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textval = wx.TextCtrl.GetValue(ctrl)
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allow_none = ctrl.IsNoneAllowed()
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pos = ctrl.GetInsertionPoint()
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sel_start, sel_to = ctrl.GetSelection()
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select_len = sel_to - sel_start
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# (Uncomment for debugging:)
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## print 'keycode:', key
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## print 'pos:', pos
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## print 'sel_start, sel_to:', sel_start, sel_to
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## print 'select_len:', select_len
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## print 'textval:', textval
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# set defaults for processing:
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allow_event = 1
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set_to_none = 0
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set_to_zero = 0
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set_to_minus_one = 0
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paste = 0
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internally_set = 0
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new_value = value
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new_text = textval
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new_pos = pos
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# Validate action, and predict resulting value, so we can
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# range check the result and validate that too.
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if key in (wx.WXK_DELETE, wx.WXK_BACK, WXK_CTRL_X):
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if select_len:
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new_text = textval[:sel_start] + textval[sel_to:]
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elif key == wx.WXK_DELETE and pos < len(textval):
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new_text = textval[:pos] + textval[pos+1:]
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elif key == wx.WXK_BACK and pos > 0:
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new_text = textval[:pos-1] + textval[pos:]
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# (else value shouldn't change)
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if new_text in ('', '-'):
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# Deletion of last significant digit:
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if allow_none and new_text == '':
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new_value = None
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set_to_none = 1
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else:
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new_value = 0
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set_to_zero = 1
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else:
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try:
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new_value = ctrl._fromGUI(new_text)
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except ValueError:
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allow_event = 0
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elif key == WXK_CTRL_V: # (see comments at top of file)
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# Only allow paste if number:
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paste_text = ctrl._getClipboardContents()
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new_text = textval[:sel_start] + paste_text + textval[sel_to:]
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if new_text == '' and allow_none:
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new_value = None
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set_to_none = 1
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else:
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try:
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# Convert the resulting strings, verifying they
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# are legal integers and will fit in proper
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# size if ctrl limited to int. (if not,
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# disallow event.)
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new_value = ctrl._fromGUI(new_text)
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if paste_text:
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paste_value = ctrl._fromGUI(paste_text)
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else:
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paste_value = 0
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new_pos = sel_start + len(str(paste_value))
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# if resulting value is 0, truncate and highlight value:
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if new_value == 0 and len(new_text) > 1:
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set_to_zero = 1
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elif paste_value == 0:
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# Disallow pasting a leading zero with nothing selected:
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if( select_len == 0
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and value is not None
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and ( (value >= 0 and pos == 0)
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or (value < 0 and pos in [0,1]) ) ):
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allow_event = 0
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paste = 1
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except ValueError:
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allow_event = 0
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elif key < wx.WXK_SPACE or key > 255:
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pass # event ok
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elif chr(key) == '-':
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# Allow '-' to result in -1 if replacing entire contents:
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if( value is None
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or (value == 0 and pos == 0)
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or (select_len >= len(str(abs(value)))) ):
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new_value = -1
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set_to_minus_one = 1
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# else allow negative sign only at start, and only if
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# number isn't already zero or negative:
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elif pos != 0 or (value is not None and value < 0):
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allow_event = 0
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else:
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new_text = '-' + textval
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new_pos = 1
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try:
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new_value = ctrl._fromGUI(new_text)
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except ValueError:
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allow_event = 0
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elif chr(key) in string.digits:
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# disallow inserting a leading zero with nothing selected
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if( chr(key) == '0'
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and select_len == 0
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and value is not None
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and ( (value >= 0 and pos == 0)
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or (value < 0 and pos in [0,1]) ) ):
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allow_event = 0
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# disallow inserting digits before the minus sign:
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elif value is not None and value < 0 and pos == 0:
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allow_event = 0
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else:
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new_text = textval[:sel_start] + chr(key) + textval[sel_to:]
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try:
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new_value = ctrl._fromGUI(new_text)
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except ValueError:
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allow_event = 0
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else:
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# not a legal char
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allow_event = 0
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if allow_event:
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# Do range checking for new candidate value:
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if ctrl.IsLimited() and not ctrl.IsInBounds(new_value):
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allow_event = 0
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elif new_value is not None:
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# ensure resulting text doesn't result in a leading 0:
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if not set_to_zero and not set_to_minus_one:
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if( (new_value > 0 and new_text[0] == '0')
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or (new_value < 0 and new_text[1] == '0')
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or (new_value == 0 and select_len > 1 ) ):
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# Allow replacement of leading chars with
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# zero, but remove the leading zero, effectively
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# making this like "remove leading digits"
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# Account for leading zero when positioning cursor:
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if( key == wx.WXK_BACK
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or (paste and paste_value == 0 and new_pos > 0) ):
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new_pos = new_pos - 1
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wx.CallAfter(ctrl.SetValue, new_value)
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wx.CallAfter(ctrl.SetInsertionPoint, new_pos)
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internally_set = 1
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elif paste:
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# Always do paste numerically, to remove
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# leading/trailing spaces
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wx.CallAfter(ctrl.SetValue, new_value)
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wx.CallAfter(ctrl.SetInsertionPoint, new_pos)
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internally_set = 1
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elif (new_value == 0 and len(new_text) > 1 ):
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allow_event = 0
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if allow_event:
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ctrl._colorValue(new_value) # (one way or t'other)
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# (Uncomment for debugging:)
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## if allow_event:
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## print 'new value:', new_value
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## if paste: print 'paste'
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## if set_to_none: print 'set_to_none'
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## if set_to_zero: print 'set_to_zero'
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## if set_to_minus_one: print 'set_to_minus_one'
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## if internally_set: print 'internally_set'
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## else:
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## print 'new text:', new_text
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## print 'disallowed'
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## print
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if allow_event:
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if set_to_none:
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wx.CallAfter(ctrl.SetValue, new_value)
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elif set_to_zero:
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# select to "empty" numeric value
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wx.CallAfter(ctrl.SetValue, new_value)
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wx.CallAfter(ctrl.SetInsertionPoint, 0)
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wx.CallAfter(ctrl.SetSelection, 0, 1)
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elif set_to_minus_one:
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wx.CallAfter(ctrl.SetValue, new_value)
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wx.CallAfter(ctrl.SetInsertionPoint, 1)
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wx.CallAfter(ctrl.SetSelection, 1, 2)
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elif not internally_set:
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event.Skip() # allow base wxTextCtrl to finish processing
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elif not wx.Validator_IsSilent():
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wx.Bell()
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def TransferToWindow(self):
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""" Transfer data from validator to window.
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The default implementation returns False, indicating that an error
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occurred. We simply return True, as we don't do any data transfer.
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"""
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return True # Prevent wx.Dialog from complaining.
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def TransferFromWindow(self):
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""" Transfer data from window to validator.
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The default implementation returns False, indicating that an error
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occurred. We simply return True, as we don't do any data transfer.
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"""
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return True # Prevent wx.Dialog from complaining.
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#----------------------------------------------------------------------------
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class IntCtrl(wx.TextCtrl):
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"""
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This class provides a control that takes and returns integers as
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value, and provides bounds support and optional value limiting.
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IntCtrl(
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parent, id = -1,
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value = 0,
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pos = wxDefaultPosition,
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size = wxDefaultSize,
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style = 0,
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validator = wxDefaultValidator,
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name = "integer",
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min = None,
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max = None,
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limited = False,
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allow_none = False,
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allow_long = False,
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default_color = wxBLACK,
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oob_color = wxRED )
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value
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If no initial value is set, the default will be zero, or
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the minimum value, if specified. If an illegal string is specified,
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a ValueError will result. (You can always later set the initial
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value with SetValue() after instantiation of the control.)
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min
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The minimum value that the control should allow. This can be
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adjusted with SetMin(). If the control is not limited, any value
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below this bound will be colored with the current out-of-bounds color.
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If min < -sys.maxint-1 and the control is configured to not allow long
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values, the minimum bound will still be set to the long value, but
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the implicit bound will be -sys.maxint-1.
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max
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The maximum value that the control should allow. This can be
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adjusted with SetMax(). If the control is not limited, any value
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above this bound will be colored with the current out-of-bounds color.
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if max > sys.maxint and the control is configured to not allow long
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values, the maximum bound will still be set to the long value, but
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the implicit bound will be sys.maxint.
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limited
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Boolean indicating whether the control prevents values from
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exceeding the currently set minimum and maximum values (bounds).
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If False and bounds are set, out-of-bounds values will
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be colored with the current out-of-bounds color.
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allow_none
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Boolean indicating whether or not the control is allowed to be
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empty, representing a value of None for the control.
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allow_long
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Boolean indicating whether or not the control is allowed to hold
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and return a long as well as an int.
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default_color
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Color value used for in-bounds values of the control.
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oob_color
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Color value used for out-of-bounds values of the control
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when the bounds are set but the control is not limited.
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validator
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Normally None, IntCtrl uses its own validator to do value
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validation and input control. However, a validator derived
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from IntValidator can be supplied to override the data
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transfer methods for the IntValidator class.
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"""
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def __init__ (
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self, parent, id=-1, value = 0,
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pos = wx.DefaultPosition, size = wx.DefaultSize,
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style = 0, validator = wx.DefaultValidator,
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name = "integer",
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min=None, max=None,
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limited = 0, allow_none = 0, allow_long = 0,
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default_color = wx.BLACK, oob_color = wx.RED,
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):
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# Establish attrs required for any operation on value:
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self.__min = None
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self.__max = None
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self.__limited = 0
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self.__default_color = wx.BLACK
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self.__oob_color = wx.RED
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self.__allow_none = 0
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self.__allow_long = 0
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self.__oldvalue = None
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if validator == wx.DefaultValidator:
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validator = IntValidator()
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wx.TextCtrl.__init__(
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self, parent, id, self._toGUI(0),
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pos, size, style, validator, name )
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# The following lets us set out our "integer update" events:
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self.Bind(wx.EVT_TEXT, self.OnText )
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# Establish parameters, with appropriate error checking
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self.SetBounds(min, max)
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self.SetLimited(limited)
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self.SetColors(default_color, oob_color)
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self.SetNoneAllowed(allow_none)
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self.SetLongAllowed(allow_long)
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self.SetValue(value)
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self.__oldvalue = 0
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def OnText( self, event ):
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"""
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Handles an event indicating that the text control's value
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has changed, and issue EVT_INT event.
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NOTE: using wx.TextCtrl.SetValue() to change the control's
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contents from within a wx.EVT_CHAR handler can cause double
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text events. So we check for actual changes to the text
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before passing the events on.
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"""
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value = self.GetValue()
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if value != self.__oldvalue:
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try:
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self.GetEventHandler().ProcessEvent(
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IntUpdatedEvent( self.GetId(), self.GetValue(), self ) )
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except ValueError:
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return
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# let normal processing of the text continue
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event.Skip()
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self.__oldvalue = value # record for next event
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def GetValue(self):
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"""
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Returns the current integer (long) value of the control.
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"""
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return self._fromGUI( wx.TextCtrl.GetValue(self) )
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def SetValue(self, value):
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"""
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Sets the value of the control to the integer value specified.
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The resulting actual value of the control may be altered to
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conform with the bounds set on the control if limited,
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or colored if not limited but the value is out-of-bounds.
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A ValueError exception will be raised if an invalid value
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is specified.
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"""
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wx.TextCtrl.SetValue( self, self._toGUI(value) )
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self._colorValue()
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def SetMin(self, min=None):
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"""
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Sets the minimum value of the control. If a value of None
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is provided, then the control will have no explicit minimum value.
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If the value specified is greater than the current maximum value,
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then the function returns 0 and the minimum will not change from
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its current setting. On success, the function returns 1.
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If successful and the current value is lower than the new lower
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bound, if the control is limited, the value will be automatically
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adjusted to the new minimum value; if not limited, the value in the
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control will be colored with the current out-of-bounds color.
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If min > -sys.maxint-1 and the control is configured to not allow longs,
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the function will return 0, and the min will not be set.
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"""
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if( self.__max is None
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or min is None
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or (self.__max is not None and self.__max >= min) ):
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self.__min = min
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if self.IsLimited() and min is not None and self.GetValue() < min:
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self.SetValue(min)
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else:
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self._colorValue()
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return 1
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else:
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return 0
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def GetMin(self):
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"""
|
|
Gets the minimum value of the control. It will return the current
|
|
minimum integer, or None if not specified.
|
|
"""
|
|
return self.__min
|
|
|
|
|
|
def SetMax(self, max=None):
|
|
"""
|
|
Sets the maximum value of the control. If a value of None
|
|
is provided, then the control will have no explicit maximum value.
|
|
If the value specified is less than the current minimum value, then
|
|
the function returns 0 and the maximum will not change from its
|
|
current setting. On success, the function returns 1.
|
|
|
|
If successful and the current value is greater than the new upper
|
|
bound, if the control is limited the value will be automatically
|
|
adjusted to this maximum value; if not limited, the value in the
|
|
control will be colored with the current out-of-bounds color.
|
|
|
|
If max > sys.maxint and the control is configured to not allow longs,
|
|
the function will return 0, and the max will not be set.
|
|
"""
|
|
if( self.__min is None
|
|
or max is None
|
|
or (self.__min is not None and self.__min <= max) ):
|
|
self.__max = max
|
|
|
|
if self.IsLimited() and max is not None and self.GetValue() > max:
|
|
self.SetValue(max)
|
|
else:
|
|
self._colorValue()
|
|
return 1
|
|
else:
|
|
return 0
|
|
|
|
|
|
def GetMax(self):
|
|
"""
|
|
Gets the maximum value of the control. It will return the current
|
|
maximum integer, or None if not specified.
|
|
"""
|
|
return self.__max
|
|
|
|
|
|
def SetBounds(self, min=None, max=None):
|
|
"""
|
|
This function is a convenience function for setting the min and max
|
|
values at the same time. The function only applies the maximum bound
|
|
if setting the minimum bound is successful, and returns True
|
|
only if both operations succeed.
|
|
NOTE: leaving out an argument will remove the corresponding bound.
|
|
"""
|
|
ret = self.SetMin(min)
|
|
return ret and self.SetMax(max)
|
|
|
|
|
|
def GetBounds(self):
|
|
"""
|
|
This function returns a two-tuple (min,max), indicating the
|
|
current bounds of the control. Each value can be None if
|
|
that bound is not set.
|
|
"""
|
|
return (self.__min, self.__max)
|
|
|
|
|
|
def SetLimited(self, limited):
|
|
"""
|
|
If called with a value of True, this function will cause the control
|
|
to limit the value to fall within the bounds currently specified.
|
|
If the control's value currently exceeds the bounds, it will then
|
|
be limited accordingly.
|
|
|
|
If called with a value of 0, this function will disable value
|
|
limiting, but coloring of out-of-bounds values will still take
|
|
place if bounds have been set for the control.
|
|
"""
|
|
self.__limited = limited
|
|
if limited:
|
|
min = self.GetMin()
|
|
max = self.GetMax()
|
|
if not min is None and self.GetValue() < min:
|
|
self.SetValue(min)
|
|
elif not max is None and self.GetValue() > max:
|
|
self.SetValue(max)
|
|
else:
|
|
self._colorValue()
|
|
|
|
|
|
def IsLimited(self):
|
|
"""
|
|
Returns True if the control is currently limiting the
|
|
value to fall within the current bounds.
|
|
"""
|
|
return self.__limited
|
|
|
|
|
|
def IsInBounds(self, value=None):
|
|
"""
|
|
Returns True if no value is specified and the current value
|
|
of the control falls within the current bounds. This function can
|
|
also be called with a value to see if that value would fall within
|
|
the current bounds of the given control.
|
|
"""
|
|
if value is None:
|
|
value = self.GetValue()
|
|
|
|
if( not (value is None and self.IsNoneAllowed())
|
|
and type(value) not in (types.IntType, types.LongType) ):
|
|
raise ValueError (
|
|
'IntCtrl requires integer values, passed %s'% repr(value) )
|
|
|
|
min = self.GetMin()
|
|
max = self.GetMax()
|
|
if min is None: min = value
|
|
if max is None: max = value
|
|
|
|
# if bounds set, and value is None, return False
|
|
if value == None and (min is not None or max is not None):
|
|
return 0
|
|
else:
|
|
return min <= value <= max
|
|
|
|
|
|
def SetNoneAllowed(self, allow_none):
|
|
"""
|
|
Change the behavior of the validation code, allowing control
|
|
to have a value of None or not, as appropriate. If the value
|
|
of the control is currently None, and allow_none is 0, the
|
|
value of the control will be set to the minimum value of the
|
|
control, or 0 if no lower bound is set.
|
|
"""
|
|
self.__allow_none = allow_none
|
|
if not allow_none and self.GetValue() is None:
|
|
min = self.GetMin()
|
|
if min is not None: self.SetValue(min)
|
|
else: self.SetValue(0)
|
|
|
|
|
|
def IsNoneAllowed(self):
|
|
return self.__allow_none
|
|
|
|
|
|
def SetLongAllowed(self, allow_long):
|
|
"""
|
|
Change the behavior of the validation code, allowing control
|
|
to have a long value or not, as appropriate. If the value
|
|
of the control is currently long, and allow_long is 0, the
|
|
value of the control will be adjusted to fall within the
|
|
size of an integer type, at either the sys.maxint or -sys.maxint-1,
|
|
for positive and negative values, respectively.
|
|
"""
|
|
current_value = self.GetValue()
|
|
if not allow_long and type(current_value) is types.LongType:
|
|
if current_value > 0:
|
|
self.SetValue(MAXINT)
|
|
else:
|
|
self.SetValue(MININT)
|
|
self.__allow_long = allow_long
|
|
|
|
|
|
def IsLongAllowed(self):
|
|
return self.__allow_long
|
|
|
|
|
|
|
|
def SetColors(self, default_color=wx.BLACK, oob_color=wx.RED):
|
|
"""
|
|
Tells the control what colors to use for normal and out-of-bounds
|
|
values. If the value currently exceeds the bounds, it will be
|
|
recolored accordingly.
|
|
"""
|
|
self.__default_color = default_color
|
|
self.__oob_color = oob_color
|
|
self._colorValue()
|
|
|
|
|
|
def GetColors(self):
|
|
"""
|
|
Returns a tuple of (default_color, oob_color), indicating
|
|
the current color settings for the control.
|
|
"""
|
|
return self.__default_color, self.__oob_color
|
|
|
|
|
|
def _colorValue(self, value=None):
|
|
"""
|
|
Colors text with oob_color if current value exceeds bounds
|
|
set for control.
|
|
"""
|
|
if not self.IsInBounds(value):
|
|
self.SetForegroundColour(self.__oob_color)
|
|
else:
|
|
self.SetForegroundColour(self.__default_color)
|
|
self.Refresh()
|
|
|
|
|
|
def _toGUI( self, value ):
|
|
"""
|
|
Conversion function used to set the value of the control; does
|
|
type and bounds checking and raises ValueError if argument is
|
|
not a valid value.
|
|
"""
|
|
if value is None and self.IsNoneAllowed():
|
|
return ''
|
|
elif type(value) == types.LongType and not self.IsLongAllowed():
|
|
raise ValueError (
|
|
'IntCtrl requires integer value, passed long' )
|
|
elif type(value) not in (types.IntType, types.LongType):
|
|
raise ValueError (
|
|
'IntCtrl requires integer value, passed %s'% repr(value) )
|
|
|
|
elif self.IsLimited():
|
|
min = self.GetMin()
|
|
max = self.GetMax()
|
|
if not min is None and value < min:
|
|
raise ValueError (
|
|
'value is below minimum value of control %d'% value )
|
|
if not max is None and value > max:
|
|
raise ValueError (
|
|
'value exceeds value of control %d'% value )
|
|
|
|
return str(value)
|
|
|
|
|
|
def _fromGUI( self, value ):
|
|
"""
|
|
Conversion function used in getting the value of the control.
|
|
"""
|
|
|
|
# One or more of the underlying text control implementations
|
|
# issue an intermediate EVT_TEXT when replacing the control's
|
|
# value, where the intermediate value is an empty string.
|
|
# So, to ensure consistency and to prevent spurious ValueErrors,
|
|
# we make the following test, and react accordingly:
|
|
#
|
|
if value == '':
|
|
if not self.IsNoneAllowed():
|
|
return 0
|
|
else:
|
|
return None
|
|
else:
|
|
try:
|
|
return int( value )
|
|
except ValueError:
|
|
if self.IsLongAllowed():
|
|
return long( value )
|
|
else:
|
|
raise
|
|
|
|
|
|
def Cut( self ):
|
|
"""
|
|
Override the wxTextCtrl's .Cut function, with our own
|
|
that does validation. Will result in a value of 0
|
|
if entire contents of control are removed.
|
|
"""
|
|
sel_start, sel_to = self.GetSelection()
|
|
select_len = sel_to - sel_start
|
|
textval = wx.TextCtrl.GetValue(self)
|
|
|
|
do = wx.TextDataObject()
|
|
do.SetText(textval[sel_start:sel_to])
|
|
wx.TheClipboard.Open()
|
|
wx.TheClipboard.SetData(do)
|
|
wx.TheClipboard.Close()
|
|
if select_len == len(wxTextCtrl.GetValue(self)):
|
|
if not self.IsNoneAllowed():
|
|
self.SetValue(0)
|
|
self.SetInsertionPoint(0)
|
|
self.SetSelection(0,1)
|
|
else:
|
|
self.SetValue(None)
|
|
else:
|
|
new_value = self._fromGUI(textval[:sel_start] + textval[sel_to:])
|
|
self.SetValue(new_value)
|
|
|
|
|
|
def _getClipboardContents( self ):
|
|
"""
|
|
Subroutine for getting the current contents of the clipboard.
|
|
"""
|
|
do = wx.TextDataObject()
|
|
wx.TheClipboard.Open()
|
|
success = wx.TheClipboard.GetData(do)
|
|
wx.TheClipboard.Close()
|
|
|
|
if not success:
|
|
return None
|
|
else:
|
|
# Remove leading and trailing spaces before evaluating contents
|
|
return do.GetText().strip()
|
|
|
|
|
|
def Paste( self ):
|
|
"""
|
|
Override the wxTextCtrl's .Paste function, with our own
|
|
that does validation. Will raise ValueError if not a
|
|
valid integerizable value.
|
|
"""
|
|
paste_text = self._getClipboardContents()
|
|
if paste_text:
|
|
# (conversion will raise ValueError if paste isn't legal)
|
|
sel_start, sel_to = self.GetSelection()
|
|
text = wx.TextCtrl.GetValue( self )
|
|
new_text = text[:sel_start] + paste_text + text[sel_to:]
|
|
if new_text == '' and self.IsNoneAllowed():
|
|
self.SetValue(None)
|
|
else:
|
|
value = self._fromGUI(new_text)
|
|
self.SetValue(value)
|
|
new_pos = sel_start + len(paste_text)
|
|
wx.CallAfter(self.SetInsertionPoint, new_pos)
|
|
|
|
|
|
|
|
#===========================================================================
|
|
|
|
if __name__ == '__main__':
|
|
|
|
import traceback
|
|
|
|
class myDialog(wx.Dialog):
|
|
def __init__(self, parent, id, title,
|
|
pos = wx.DefaultPosition, size = wx.DefaultSize,
|
|
style = wx.DEFAULT_DIALOG_STYLE ):
|
|
wx.Dialog.__init__(self, parent, id, title, pos, size, style)
|
|
|
|
self.int_ctrl = IntCtrl(self, wx.NewId(), size=(55,20))
|
|
self.OK = wx.Button( self, wx.ID_OK, "OK")
|
|
self.Cancel = wx.Button( self, wx.ID_CANCEL, "Cancel")
|
|
|
|
vs = wx.BoxSizer( wx.VERTICAL )
|
|
vs.Add( self.int_ctrl, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
|
|
hs = wx.BoxSizer( wx.HORIZONTAL )
|
|
hs.Add( self.OK, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
|
|
hs.Add( self.Cancel, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
|
|
vs.Add(hs, 0, wx.ALIGN_CENTRE|wx.ALL, 5 )
|
|
|
|
self.SetAutoLayout( True )
|
|
self.SetSizer( vs )
|
|
vs.Fit( self )
|
|
vs.SetSizeHints( self )
|
|
self.Bind(EVT_INT, self.OnInt, self.int_ctrl)
|
|
|
|
def OnInt(self, event):
|
|
print 'int now', event.GetValue()
|
|
|
|
class TestApp(wx.App):
|
|
def OnInit(self):
|
|
try:
|
|
self.frame = wx.Frame(None, -1, "Test", (20,20), (120,100) )
|
|
self.panel = wx.Panel(self.frame, -1)
|
|
button = wx.Button(self.panel, 10, "Push Me", (20, 20))
|
|
self.Bind(wx.EVT_BUTTON, self.OnClick, button)
|
|
except:
|
|
traceback.print_exc()
|
|
return False
|
|
return True
|
|
|
|
def OnClick(self, event):
|
|
dlg = myDialog(self.panel, -1, "test IntCtrl")
|
|
dlg.int_ctrl.SetValue(501)
|
|
dlg.int_ctrl.SetInsertionPoint(1)
|
|
dlg.int_ctrl.SetSelection(1,2)
|
|
rc = dlg.ShowModal()
|
|
print 'final value', dlg.int_ctrl.GetValue()
|
|
del dlg
|
|
self.frame.Destroy()
|
|
|
|
def Show(self):
|
|
self.frame.Show(True)
|
|
|
|
try:
|
|
app = TestApp(0)
|
|
app.Show()
|
|
app.MainLoop()
|
|
except:
|
|
traceback.print_exc()
|