wxPython/demo/ListBox.py

   1 # 11/20/2003 - Jeff Grimmett (grimmtooth@softhome.net)
   2 #
   3 # o Updated for wx namespace
   4 #
   5
   6 import  wx
   7
   8 #---------------------------------------------------------------------------
   9
  10 # This listbox subclass lets you type the starting letters of what you want to
  11 # select, and scrolls the list to the match if it is found.
  12 class FindPrefixListBox(wx.ListBox):
  13     def __init__(self, parent, id, pos=wx.DefaultPosition, size=wx.DefaultSize,
  14                  choices=[], style=0, validator=wx.DefaultValidator):
  15         wx.ListBox.__init__(self, parent, id, pos, size, choices, style, validator)
  16         self.typedText = ''
  17         self.log = parent.log
  18         self.Bind(wx.EVT_KEY_DOWN, self.OnKey)
  19
  20
  21     def FindPrefix(self, prefix):
  22         self.log.WriteText('Looking for prefix: %s\n' % prefix)
  23
  24         if prefix:
  25             prefix = prefix.lower()
  26             length = len(prefix)
  27
  28             # Changed in 2.5 because ListBox.Number() is no longer supported.
  29             # ListBox.GetCount() is now the appropriate way to go.
  30             for x in range(self.GetCount()):
  31                 text = self.GetString(x)
  32                 text = text.lower()
  33
  34                 if text[:length] == prefix:
  35                     self.log.WriteText('Prefix %s is found.\n' % prefix)
  36                     return x
  37
  38         self.log.WriteText('Prefix %s is not found.\n' % prefix)
  39         return -1
  40
  41
  42     def OnKey(self, evt):
  43         key = evt.GetKeyCode()
  44
  45         if key >= 32 and key <= 127:
  46             self.typedText = self.typedText + chr(key)
  47             item = self.FindPrefix(self.typedText)
  48
  49             if item != -1:
  50                 self.SetSelection(item)
  51
  52         elif key == wx.WXK_BACK:   # backspace removes one character and backs up
  53             self.typedText = self.typedText[:-1]
  54
  55             if not self.typedText:
  56                 self.SetSelection(0)
  57             else:
  58                 item = self.FindPrefix(self.typedText)
  59
  60                 if item != -1:
  61                     self.SetSelection(item)
  62         else:
  63             self.typedText = ''
  64             evt.Skip()
  65
  66     def OnKeyDown(self, evt):
  67         pass
  68
  69
  70 #---------------------------------------------------------------------------
  71
  72 class TestListBox(wx.Panel):
  73     def __init__(self, parent, log):
  74         self.log = log
  75         wx.Panel.__init__(self, parent, -1)
  76
  77         sampleList = ['zero', 'one', 'two', 'three', 'four', 'five',
  78                       'six', 'seven', 'eight', 'nine', 'ten', 'eleven',
  79                       'twelve', 'thirteen', 'fourteen']
  80
  81         wx.StaticText(self, -1, "This example uses the wxListBox control.", (45, 10))
  82         wx.StaticText(self, -1, "Select one:", (15, 50), (65, 18))
  83         self.lb1 = wx.ListBox(self, 60, (80, 50), (80, 120), sampleList, wx.LB_SINGLE)
  84         self.Bind(wx.EVT_LISTBOX, self.EvtListBox, self.lb1)
  85         self.Bind(wx.EVT_LISTBOX_DCLICK, self.EvtListBoxDClick, self.lb1)
  86         self.lb1.Bind(wx.EVT_RIGHT_UP, self.EvtRightButton)
  87         self.lb1.SetSelection(3)
  88         self.lb1.Append("with data", "This one has data");
  89         self.lb1.SetClientData(2, "This one has data");
  90
  91
  92         wx.StaticText(self, -1, "Select many:", (200, 50), (65, 18))
  93         self.lb2 = wx.ListBox(self, 70, (280, 50), (80, 120), sampleList, wx.LB_EXTENDED)
  94         self.Bind(wx.EVT_LISTBOX, self.EvtMultiListBox, self.lb2)
  95         self.lb2.Bind(wx.EVT_RIGHT_UP, self.EvtRightButton)
  96         self.lb2.SetSelection(0)
  97
  98         sampleList = sampleList + ['test a', 'test aa', 'test aab',
  99                                    'test ab', 'test abc', 'test abcc',
 100                                    'test abcd' ]
 101         sampleList.sort()
 102         wx.StaticText(self, -1, "Find Prefix:", (15, 250))
 103         fp = FindPrefixListBox(self, -1, (80, 250), (80, 120), sampleList, wx.LB_SINGLE)
 104         fp.SetSelection(0)
 105
 106
 107     def EvtListBox(self, event):
 108         self.log.WriteText('EvtListBox: %s, %s, %s\n' %
 109                            (event.GetString(), event.IsSelection(), event.GetSelection()))
 110
 111         lb = event.GetEventObject()
 112         data = lb.GetClientData(lb.GetSelection())
 113
 114         if data is not None:
 115             self.log.WriteText('\tdata: %s\n' % data)
 116
 117
 118     def EvtListBoxDClick(self, event):
 119         self.log.WriteText('EvtListBoxDClick: %s\n' % self.lb1.GetSelection())
 120         self.lb1.Delete(self.lb1.GetSelection())
 121
 122     def EvtMultiListBox(self, event):
 123         self.log.WriteText('EvtMultiListBox: %s\n' % str(self.lb2.GetSelections()))
 124
 125     def EvtRightButton(self, event):
 126         self.log.WriteText('EvtRightButton: %s\n' % event.GetPosition())
 127
 128         if event.GetEventObject().GetId() == 70:
 129             selections = list(self.lb2.GetSelections())
 130             selections.reverse()
 131
 132             for index in selections:
 133                 self.lb2.Delete(index)
 134
 135
 136 #---------------------------------------------------------------------------
 137
 138 def runTest(frame, nb, log):
 139     win = TestListBox(nb, log)
 140     return win
 141
 142 #---------------------------------------------------------------------------
 143
 144
 145
 146
 147 overview = """<html><body>
 148 A listbox is used to select one or more of a list of
 149 strings. The strings are displayed in a scrolling box, with the
 150 selected string(s) marked in reverse video. A listbox can be single
 151 selection (if an item is selected, the previous selection is removed)
 152 or multiple selection (clicking an item toggles the item on or off
 153 independently of other selections).
 154 </body></html>
 155 """
 156
 157
 158 if __name__ == '__main__':
 159     import sys,os
 160     import run
 161     run.main(['', os.path.basename(sys.argv[0])])
 162