merged 2.2 branch

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@7748 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/demo/wxValidator.py

@@ -0,0 +1,119 @@
+
+from wxPython.wx        import *
+from wxPython.lib.grids import wxFlexGridSizer
+
+import string
+
+#----------------------------------------------------------------------
+
+ALPHA_ONLY = 1
+DIGIT_ONLY = 2
+
+class MyValidator(wxPyValidator):
+    def __init__(self, flag=None, pyVar=None):
+        wxPyValidator.__init__(self)
+        self.flag = flag
+        EVT_CHAR(self, self.OnChar)
+
+    def Clone(self):
+        return MyValidator(self.flag)
+
+    def Validate(self, win):
+        print 'validate'
+        tc = wxPyTypeCast(win, "wxTextCtrl")
+        val = tc.GetValue()
+        if self.flag == ALPHA_ONLY:
+            for x in val:
+                if x not in string.letters:
+                    return false
+
+        elif self.flag == DIGIT_ONLY:
+            for x in val:
+                if x not in string.digits:
+                    return false
+
+        return true
+
+
+    def OnChar(self, event):
+        key = event.KeyCode()
+        if key < WXK_SPACE or key == WXK_DELETE or key > 255:
+            event.Skip()
+            return
+        if self.flag == ALPHA_ONLY and chr(key) in string.letters:
+            event.Skip()
+            return
+        if self.flag == DIGIT_ONLY and chr(key) in string.digits:
+            event.Skip()
+            return
+
+        if not wxValidator_IsSilent():
+            wxBell()
+
+        # Returning without calling even.Skip eats the event before it
+        # gets to the text control
+        return
+
+#----------------------------------------------------------------------
+
+class TestValidatorPanel(wxPanel):
+    def __init__(self, parent):
+        wxPanel.__init__(self, parent, -1)
+        self.SetAutoLayout(true)
+        VSPACE = 10
+
+        fgs = wxFlexGridSizer(0, 2)
+
+        fgs.Add(1,1);
+        fgs.Add(wxStaticText(self, -1, "These controls have validators that limit\n"
+                             "the type of characters that can be entered."))
+
+        fgs.Add(1,VSPACE); fgs.Add(1,VSPACE)
+
+        label = wxStaticText(self, -1, "Alpha Only: ")
+        fgs.Add(label, 0, wxALIGN_RIGHT|wxCENTER)
+
+        fgs.Add(wxTextCtrl(self, -1, "", validator = MyValidator(ALPHA_ONLY)))
+
+        fgs.Add(1,VSPACE); fgs.Add(1,VSPACE)
+
+        label = wxStaticText(self, -1, "Digits Only: ")
+        fgs.Add(label, 0, wxALIGN_RIGHT|wxCENTER)
+        fgs.Add(wxTextCtrl(self, -1, "", validator = MyValidator(DIGIT_ONLY)))
+
+        border = wxBoxSizer()
+        border.Add(fgs, 1, wxGROW|wxALL, 25)
+        self.SetSizer(border)
+        self.Layout()
+
+
+#----------------------------------------------------------------------
+
+def runTest(frame, nb, log):
+    win = TestValidatorPanel(nb)
+    return win
+
+#----------------------------------------------------------------------
+
+
+
+
+
+
+
+
+
+overview = """\
+wxValidator is the base class for a family of validator classes that mediate between a class of control, and application data.
+
+A validator has three major roles:
+
+1. to transfer data from a C++ variable or own storage to and from a control;
+
+2. to validate data in a control, and show an appropriate error message;
+
+3. to filter events (such as keystrokes), thereby changing the behaviour of the associated control.
+
+Validators can be plugged into controls dynamically.
+
+"""