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2import string
3import wx
2f90df85 4
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5#----------------------------------------------------------------------
6
7ALPHA_ONLY = 1
8DIGIT_ONLY = 2
9
8fa876ca 10class MyValidator(wx.PyValidator):
2f90df85 11 def __init__(self, flag=None, pyVar=None):
8fa876ca 12 wx.PyValidator.__init__(self)
2f90df85 13 self.flag = flag
8fa876ca 14 self.Bind(wx.EVT_CHAR, self.OnChar)
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15
16 def Clone(self):
17 return MyValidator(self.flag)
18
19 def Validate(self, win):
9416aa89 20 tc = self.GetWindow()
2f90df85 21 val = tc.GetValue()
8fa876ca 22
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23 if self.flag == ALPHA_ONLY:
24 for x in val:
25 if x not in string.letters:
1e4a197e 26 return False
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27
28 elif self.flag == DIGIT_ONLY:
29 for x in val:
30 if x not in string.digits:
1e4a197e 31 return False
2f90df85 32
1e4a197e 33 return True
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34
35
36 def OnChar(self, event):
37 key = event.KeyCode()
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38
39 if key < wx.WXK_SPACE or key == wx.WXK_DELETE or key > 255:
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40 event.Skip()
41 return
8fa876ca 42
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43 if self.flag == ALPHA_ONLY and chr(key) in string.letters:
44 event.Skip()
45 return
8fa876ca 46
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47 if self.flag == DIGIT_ONLY and chr(key) in string.digits:
48 event.Skip()
49 return
50
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51 if not wx.Validator_IsSilent():
52 wx.Bell()
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53
54 # Returning without calling even.Skip eats the event before it
55 # gets to the text control
56 return
57
58#----------------------------------------------------------------------
59
8fa876ca 60class TestValidatorPanel(wx.Panel):
2f90df85 61 def __init__(self, parent):
8fa876ca 62 wx.Panel.__init__(self, parent, -1)
1e4a197e 63 self.SetAutoLayout(True)
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64 VSPACE = 10
65
8fa876ca 66 fgs = wx.FlexGridSizer(0, 2)
2f90df85 67
fbd5dd1d 68 fgs.Add((1,1))
372bde9b 69 fgs.Add(wx.StaticText(self, -1, "These controls have validators that limit\n"
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70 "the type of characters that can be entered."))
71
fbd5dd1d 72 fgs.Add((1,VSPACE)); fgs.Add((1,VSPACE))
2f90df85 73
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74 label = wx.StaticText(self, -1, "Alpha Only: ")
75 fgs.Add(label, 0, wx.ALIGN_RIGHT|wx.CENTER)
2f90df85 76
8fa876ca 77 fgs.Add(wx.TextCtrl(self, -1, "", validator = MyValidator(ALPHA_ONLY)))
2f90df85 78
fbd5dd1d 79 fgs.Add((1,VSPACE)); fgs.Add((1,VSPACE))
2f90df85 80
8fa876ca 81 label = wx.StaticText(self, -1, "Digits Only: ")
372bde9b 82 fgs.Add(label, 0, wx.ALIGN_RIGHT|wx.CENTER)
8fa876ca 83 fgs.Add(wx.TextCtrl(self, -1, "", validator = MyValidator(DIGIT_ONLY)))
2f90df85 84
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85 fgs.Add((1,VSPACE)); fgs.Add((1,VSPACE))
86 fgs.Add((1,VSPACE)); fgs.Add((1,VSPACE))
87 fgs.Add((0,0))
8fa876ca 88 b = wx.Button(self, -1, "Test Dialog Validation")
372bde9b 89 self.Bind(wx.EVT_BUTTON, self.OnDoDialog, b)
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90 fgs.Add(b)
91
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92 border = wx.BoxSizer()
93 border.Add(fgs, 1, wx.GROW|wx.ALL, 25)
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94 self.SetSizer(border)
95 self.Layout()
96
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97 def OnDoDialog(self, evt):
98 dlg = TestValidateDialog(self)
99 dlg.ShowModal()
100 dlg.Destroy()
101
102
103#----------------------------------------------------------------------
104
8fa876ca 105class TextObjectValidator(wx.PyValidator):
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106 """ This validator is used to ensure that the user has entered something
107 into the text object editor dialog's text field.
108 """
109 def __init__(self):
110 """ Standard constructor.
111 """
8fa876ca 112 wx.PyValidator.__init__(self)
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113
114
115
116 def Clone(self):
117 """ Standard cloner.
118
119 Note that every validator must implement the Clone() method.
120 """
121 return TextObjectValidator()
122
123
124 def Validate(self, win):
125 """ Validate the contents of the given text control.
126 """
127 textCtrl = self.GetWindow()
128 text = textCtrl.GetValue()
129
130 if len(text) == 0:
8fa876ca 131 wx.MessageBox("A text object must contain some text!", "Error")
9de6ef00 132 textCtrl.SetBackgroundColour("pink")
9416aa89 133 textCtrl.SetFocus()
9de6ef00 134 textCtrl.Refresh()
1e4a197e 135 return False
9416aa89 136 else:
9de6ef00 137 textCtrl.SetBackgroundColour(
8fa876ca 138 wx.SystemSettings_GetColour(wx.SYS_COLOUR_WINDOW))
9de6ef00 139 textCtrl.Refresh()
1e4a197e 140 return True
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141
142
143 def TransferToWindow(self):
144 """ Transfer data from validator to window.
145
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146 The default implementation returns False, indicating that an error
147 occurred. We simply return True, as we don't do any data transfer.
9416aa89 148 """
1e4a197e 149 return True # Prevent wxDialog from complaining.
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150
151
152 def TransferFromWindow(self):
153 """ Transfer data from window to validator.
154
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155 The default implementation returns False, indicating that an error
156 occurred. We simply return True, as we don't do any data transfer.
9416aa89 157 """
1e4a197e 158 return True # Prevent wxDialog from complaining.
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159
160#----------------------------------------------------------------------
161
8fa876ca 162class TestValidateDialog(wx.Dialog):
9416aa89 163 def __init__(self, parent):
8fa876ca 164 wx.Dialog.__init__(self, parent, -1, "Validated Dialog")
9416aa89 165
1e4a197e 166 self.SetAutoLayout(True)
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167 VSPACE = 10
168
8fa876ca 169 fgs = wx.FlexGridSizer(0, 2)
9416aa89 170
fbd5dd1d 171 fgs.Add((1,1));
372bde9b 172 fgs.Add(wx.StaticText(self, -1,
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173 "These controls must have text entered into them. Each\n"
174 "one has a validator that is checked when the Okay\n"
175 "button is clicked."))
176
fbd5dd1d 177 fgs.Add((1,VSPACE)); fgs.Add((1,VSPACE))
9416aa89 178
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179 label = wx.StaticText(self, -1, "First: ")
180 fgs.Add(label, 0, wx.ALIGN_RIGHT|wx.CENTER)
9416aa89 181
8fa876ca 182 fgs.Add(wx.TextCtrl(self, -1, "", validator = TextObjectValidator()))
9416aa89 183
fbd5dd1d 184 fgs.Add((1,VSPACE)); fgs.Add((1,VSPACE))
9416aa89 185
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186 label = wx.StaticText(self, -1, "Second: ")
187 fgs.Add(label, 0, wx.ALIGN_RIGHT|wx.CENTER)
188 fgs.Add(wx.TextCtrl(self, -1, "", validator = TextObjectValidator()))
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189
190
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191 buttons = wx.BoxSizer(wx.HORIZONTAL)
192 b = wx.Button(self, wx.ID_OK, "Okay")
9de6ef00 193 b.SetDefault()
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194 buttons.Add(b, 0, wx.ALL, 10)
195 buttons.Add(wx.Button(self, wx.ID_CANCEL, "Cancel"), 0, wx.ALL, 10)
9416aa89 196
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197 border = wx.BoxSizer(wx.VERTICAL)
198 border.Add(fgs, 1, wx.GROW|wx.ALL, 25)
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199 border.Add(buttons)
200 self.SetSizer(border)
201 border.Fit(self)
202 self.Layout()
203
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204
205#----------------------------------------------------------------------
206
207def runTest(frame, nb, log):
208 win = TestValidatorPanel(nb)
209 return win
210
211#----------------------------------------------------------------------
212
213
214
2f90df85 215overview = """\
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216<html>
217<body>
95bfd958 218wx.Validator is the base class for a family of validator classes that mediate
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219between a class of control, and application data.
220
221<p>A validator has three major roles:
222
223<p><ol>
224<li>to transfer data from a C++ variable or own storage to and from a control;
225<li>to validate data in a control, and show an appropriate error message;
226<li>to filter events (such as keystrokes), thereby changing the behaviour of the associated control.
227</ol>
228<p>Validators can be plugged into controls dynamically.
229</body>
230</html>
2f90df85 231"""
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232
233
234
235if __name__ == '__main__':
236 import sys,os
237 import run
8eca4fef 238 run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
1e4a197e 239