wxPython/demo/wxTreeCtrl.py

   1
   2 from wxPython.wx import *
   3
   4 import string
   5
   6 #---------------------------------------------------------------------------
   7
   8 class MyTreeCtrl(wxTreeCtrl):
   9     def __init__(self, parent, id, pos, size, style, log):
  10         wxTreeCtrl.__init__(self, parent, id, pos, size, style)
  11         self.log = log
  12
  13     def OnCompareItems(self, item1, item2):
  14         t1 = self.GetItemText(item1)
  15         t2 = self.GetItemText(item2)
  16         self.log.WriteText('compare: ' + t1 + ' <> ' + t2 + '\n')
  17         if t1 < t2: return -1
  18         if t1 == t2: return 0
  19         return 1
  20
  21 #---------------------------------------------------------------------------
  22
  23 class TestTreeCtrlPanel(wxPanel):
  24     def __init__(self, parent, log):
  25         # Use the WANTS_CHARS style so the panel doesn't eat the Return key.
  26         wxPanel.__init__(self, parent, -1, style=wxWANTS_CHARS)
  27         EVT_SIZE(self, self.OnSize)
  28
  29         self.log = log
  30         tID = NewId()
  31
  32         self.tree = MyTreeCtrl(self, tID, wxDefaultPosition, wxDefaultSize,
  33                                wxTR_HAS_BUTTONS | wxTR_EDIT_LABELS# | wxTR_MULTIPLE
  34                                , self.log)
  35
  36
  37         ##import images
  38         ##il = wxImageList(16, 16)
  39         ##idx1 = il.Add(images.getSmilesBitmap())
  40         ##idx2 = il.Add(images.getOpenBitmap())
  41         ##idx3 = il.Add(images.getNewBitmap())
  42         ##idx4 = il.Add(images.getCopyBitmap())
  43         ##idx5 = il.Add(images.getPasteBitmap())
  44
  45         ##self.tree.SetImageList(il)
  46         ##self.il = il
  47
  48         # NOTE:  For some reason tree items have to have a data object in
  49         #        order to be sorted.  Since our compare just uses the labels
  50         #        we don't need any real data, so we'll just use None.
  51
  52         self.root = self.tree.AddRoot("The Root Item")
  53         self.tree.SetPyData(self.root, None)
  54         ##self.tree.SetItemImage(self.root, idx1)
  55
  56         for x in range(15):
  57             child = self.tree.AppendItem(self.root, "Item %d" % x)
  58             self.tree.SetPyData(child, None)
  59             ##self.tree.SetItemImage(child, idx2, wxTreeItemIcon_Expanded)
  60             ##self.tree.SetItemSelectedImage(child, idx3)
  61             for y in range(5):
  62                 last = self.tree.AppendItem(child, "item %d-%s" % (x, chr(ord("a")+y)))
  63                 self.tree.SetPyData(last, None)
  64                 ##self.tree.SetItemImage(last, idx4)
  65                 ##self.tree.SetItemSelectedImage(last, idx5)
  66                 for z in range(5):
  67                     item = self.tree.AppendItem(last,  "item %d-%s-%d" % (x, chr(ord("a")+y), z))
  68                     self.tree.SetPyData(item, None)
  69
  70         self.tree.Expand(self.root)
  71         EVT_TREE_ITEM_EXPANDED  (self, tID, self.OnItemExpanded)
  72         EVT_TREE_ITEM_COLLAPSED (self, tID, self.OnItemCollapsed)
  73         EVT_TREE_SEL_CHANGED    (self, tID, self.OnSelChanged)
  74         EVT_TREE_BEGIN_LABEL_EDIT(self, tID, self.OnBeginEdit)
  75         EVT_TREE_END_LABEL_EDIT (self, tID, self.OnEndEdit)
  76         EVT_TREE_ITEM_ACTIVATED (self, tID, self.OnActivate)
  77
  78         EVT_LEFT_DCLICK(self.tree, self.OnLeftDClick)
  79         EVT_RIGHT_DOWN(self.tree, self.OnRightClick)
  80         EVT_RIGHT_UP(self.tree, self.OnRightUp)
  81
  82
  83     def OnRightClick(self, event):
  84         pt = event.GetPosition();
  85         item, flags = self.tree.HitTest(pt)
  86         self.log.WriteText("OnRightClick: %s, %s, %s\n" %
  87                            (self.tree.GetItemText(item), type(item), item.__class__))
  88         self.tree.SelectItem(item)
  89
  90
  91
  92     def OnRightUp(self, event):
  93         pt = event.GetPosition();
  94         item, flags = self.tree.HitTest(pt)
  95         self.log.WriteText("OnRightUp: %s (manually starting label edit)\n"
  96                            % self.tree.GetItemText(item))
  97         self.tree.EditLabel(item)
  98
  99
 100
 101     def OnBeginEdit(self, event):
 102         self.log.WriteText("OnBeginEdit\n")
 103         # show how to prevent edit...
 104         if self.tree.GetItemText(event.GetItem()) == "The Root Item":
 105             wxBell()
 106             self.log.WriteText("You can't edit this one...\n")
 107             event.Veto()
 108
 109     def OnEndEdit(self, event):
 110         self.log.WriteText("OnEndEdit\n")
 111         # show how to reject edit, we'll not allow any digits
 112         for x in event.GetLabel():
 113             if x in string.digits:
 114                 self.log.WriteText("You can't enter digits...\n")
 115                 event.Veto()
 116                 return
 117
 118
 119     def OnLeftDClick(self, event):
 120         pt = event.GetPosition();
 121         item, flags = self.tree.HitTest(pt)
 122         self.log.WriteText("OnLeftDClick: %s\n" % self.tree.GetItemText(item))
 123         parent = self.tree.GetItemParent(item)
 124         self.tree.SortChildren(parent)
 125         event.Skip()
 126
 127
 128     def OnSize(self, event):
 129         w,h = self.GetClientSizeTuple()
 130         self.tree.SetDimensions(0, 0, w, h)
 131
 132
 133     def OnItemExpanded(self, event):
 134         item = event.GetItem()
 135         self.log.WriteText("OnItemExpanded: %s\n" % self.tree.GetItemText(item))
 136
 137     def OnItemCollapsed(self, event):
 138         item = event.GetItem()
 139         self.log.WriteText("OnItemCollapsed: %s\n" % self.tree.GetItemText(item))
 140
 141     def OnSelChanged(self, event):
 142         self.item = event.GetItem()
 143         self.log.WriteText("OnSelChanged: %s\n" % self.tree.GetItemText(self.item))
 144         if wxPlatform == '__WXMSW__':
 145             self.log.WriteText("BoundingRect: %s\n" %
 146                                self.tree.GetBoundingRect(self.item, true))
 147         #items = self.tree.GetSelections()
 148         #print map(self.tree.GetItemText, items)
 149         event.Skip()
 150
 151
 152     def OnActivate(self, evt):
 153         self.log.WriteText("OnActivate: %s\n" % self.tree.GetItemText(self.item))
 154
 155
 156 #---------------------------------------------------------------------------
 157
 158 def runTest(frame, nb, log):
 159     win = TestTreeCtrlPanel(nb, log)
 160     return win
 161
 162 #---------------------------------------------------------------------------
 163
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 176 overview = """\
 177 A tree control presents information as a hierarchy, with items that may be expanded to show further items. Items in a tree control are referenced by wxTreeItemId handles.
 178
 179 """