wxPython/demo/wxListBox.py

   1
   2 from wxPython.wx import *
   3
   4 #---------------------------------------------------------------------------
   5
   6 class wxFindPrefixListBox(wxListBox):
   7     def __init__(self, parent, id, pos=wxDefaultPosition, size=wxDefaultSize,
   8                  choices=[], style=0, validator=wxDefaultValidator):
   9         wxListBox.__init__(self, parent, id, pos, size, choices, style, validator)
  10         self.typedText = ''
  11         self.log = parent.log
  12         EVT_KEY_DOWN(self, self.OnKey)
  13
  14
  15     def FindPrefix(self, prefix):
  16         self.log.WriteText('Looking for prefix: %s\n' % prefix)
  17         if prefix:
  18             prefix = prefix.lower()
  19             length = len(prefix)
  20             for x in range(self.Number()):
  21                 text = self.GetString(x)
  22                 text = text.lower()
  23                 if text[:length] == prefix:
  24                     self.log.WriteText('Prefix %s is found.\n' % prefix)
  25                     return x
  26         self.log.WriteText('Prefix %s is not found.\n' % prefix)
  27         return -1
  28
  29
  30     def OnKey(self, evt):
  31         key = evt.GetKeyCode()
  32         if key >= 32 and key <= 127:
  33             self.typedText = self.typedText + chr(key)
  34             item = self.FindPrefix(self.typedText)
  35             if item != -1:
  36                 self.SetSelection(item)
  37
  38         elif key == WXK_BACK:   # backspace removes one character and backs up
  39             self.typedText = self.typedText[:-1]
  40             if not self.typedText:
  41                 self.SetSelection(0)
  42             else:
  43                 item = self.FindPrefix(self.typedText)
  44                 if item != -1:
  45                     self.SetSelection(item)
  46
  47         else:
  48             self.typedText = ''
  49             evt.Skip()
  50
  51     def OnKeyDown(self, evt):
  52         pass
  53
  54
  55 #---------------------------------------------------------------------------
  56
  57 class TestListBox(wxPanel):
  58     def __init__(self, parent, log):
  59         self.log = log
  60         wxPanel.__init__(self, parent, -1)
  61
  62         sampleList = ['zero', 'one', 'two', 'three', 'four', 'five',
  63                       'six', 'seven', 'eight', 'nine', 'ten', 'eleven',
  64                       'twelve', 'thirteen', 'fourteen']
  65
  66         wxStaticText(self, -1, "This example uses the wxListBox control.",
  67                                wxPoint(45, 10))
  68
  69         wxStaticText(self, -1, "Select one:", wxPoint(15, 50), wxSize(65, 18))
  70         self.lb1 = wxListBox(self, 60, wxPoint(80, 50), wxSize(80, 120),
  71                        sampleList, wxLB_SINGLE)
  72         EVT_LISTBOX(self, 60, self.EvtListBox)
  73         EVT_LISTBOX_DCLICK(self, 60, self.EvtListBoxDClick)
  74         EVT_RIGHT_UP(self.lb1, self.EvtRightButton)
  75         self.lb1.SetSelection(3)
  76         self.lb1.Append("with data", "This one has data");
  77         self.lb1.SetClientData(2, "This one has data");
  78
  79
  80         wxStaticText(self, -1, "Select many:", wxPoint(200, 50), wxSize(65, 18))
  81         self.lb2 = wxListBox(self, 70, wxPoint(280, 50), wxSize(80, 120),
  82                        sampleList, wxLB_EXTENDED)
  83         EVT_LISTBOX(self, 70, self.EvtMultiListBox)
  84         EVT_RIGHT_UP(self.lb2, self.EvtRightButton)
  85         self.lb2.SetSelection(0)
  86
  87
  88         sampleList = sampleList + ['test a', 'test aa', 'test aab',
  89                                    'test ab', 'test abc', 'test abcc',
  90                                    'test abcd' ]
  91         sampleList.sort()
  92         wxStaticText(self, -1, "Find Prefix:", wxPoint(15, 250))
  93         fp = wxFindPrefixListBox(self, -1, wxPoint(80, 250), wxSize(80, 120),
  94                                  sampleList, wxLB_SINGLE)
  95         fp.SetSelection(0)
  96
  97
  98     def EvtListBox(self, event):
  99         self.log.WriteText('EvtListBox: %s, %s, %s\n' %
 100                            (event.GetString(), event.IsSelection(), event.GetSelection()))
 101
 102         lb = event.GetEventObject()
 103         data = lb.GetClientData(lb.GetSelection())
 104         if data is not None:
 105             self.log.WriteText('\tdata: %s\n' % data)
 106
 107
 108     def EvtListBoxDClick(self, event):
 109         self.log.WriteText('EvtListBoxDClick: %s\n' % self.lb1.GetSelection())
 110         self.lb1.Delete(self.lb1.GetSelection())
 111
 112     def EvtMultiListBox(self, event):
 113         self.log.WriteText('EvtMultiListBox: %s\n' % str(self.lb2.GetSelections()))
 114
 115     def EvtRightButton(self, event):
 116         self.log.WriteText('EvtRightButton: %s\n' % event.GetPosition())
 117         if event.GetEventObject().GetId() == 70:
 118             selections = list(self.lb2.GetSelections())
 119             selections.reverse()
 120             for index in selections:
 121                 self.lb2.Delete(index)
 122
 123
 124 #---------------------------------------------------------------------------
 125
 126 def runTest(frame, nb, log):
 127     win = TestListBox(nb, log)
 128     return win
 129
 130 #---------------------------------------------------------------------------
 131
 132
 133
 134
 135
 136
 137
 138 overview = """<html><body>
 139 A listbox is used to select one or more of a list of
 140 strings. The strings are displayed in a scrolling box, with the
 141 selected string(s) marked in reverse video. A listbox can be single
 142 selection (if an item is selected, the previous selection is removed)
 143 or multiple selection (clicking an item toggles the item on or off
 144 independently of other selections).
 145 </body></html>
 146 """
 147
 148
 149 if __name__ == '__main__':
 150     import sys,os
 151     import run
 152     run.main(['', os.path.basename(sys.argv[0])])
 153