wxPython/demo/TreeCtrl.py

   1
   2 import  string
   3 import  wx
   4 import  images
   5
   6 #---------------------------------------------------------------------------
   7
   8 class MyTreeCtrl(wx.TreeCtrl):
   9     def __init__(self, parent, id, pos, size, style, log):
  10         wx.TreeCtrl.__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(wx.Panel):
  24     def __init__(self, parent, log):
  25         # Use the WANTS_CHARS style so the panel doesn't eat the Return key.
  26         wx.Panel.__init__(self, parent, -1, style=wx.WANTS_CHARS)
  27         self.Bind(wx.EVT_SIZE, self.OnSize)
  28
  29         self.log = log
  30         tID = wx.NewId()
  31
  32         self.tree = MyTreeCtrl(self, tID, wx.DefaultPosition, wx.DefaultSize,
  33                                wx.TR_HAS_BUTTONS
  34                                | wx.TR_EDIT_LABELS
  35                                #| wx.TR_MULTIPLE
  36                                #| wx.TR_HIDE_ROOT
  37                                , self.log)
  38
  39         isz = (16,16)
  40         il = wx.ImageList(isz[0], isz[1])
  41         fldridx     = il.Add(wx.ArtProvider_GetBitmap(wx.ART_FOLDER,      wx.ART_OTHER, isz))
  42         fldropenidx = il.Add(wx.ArtProvider_GetBitmap(wx.ART_FILE_OPEN,   wx.ART_OTHER, isz))
  43         fileidx     = il.Add(wx.ArtProvider_GetBitmap(wx.ART_NORMAL_FILE, wx.ART_OTHER, isz))
  44         smileidx    = il.Add(images.getSmilesBitmap())
  45
  46         b = images.getSmilesBitmap()
  47         print b.GetSize()
  48
  49         self.tree.SetImageList(il)
  50         self.il = il
  51
  52         # NOTE:  For some reason tree items have to have a data object in
  53         #        order to be sorted.  Since our compare just uses the labels
  54         #        we don't need any real data, so we'll just use None below for
  55         #        the item data.
  56
  57         self.root = self.tree.AddRoot("The Root Item")
  58         self.tree.SetPyData(self.root, None)
  59         self.tree.SetItemImage(self.root, fldridx, wx.TreeItemIcon_Normal)
  60         self.tree.SetItemImage(self.root, fldropenidx, wx.TreeItemIcon_Expanded)
  61
  62
  63         for x in range(15):
  64             child = self.tree.AppendItem(self.root, "Item %d" % x)
  65             self.tree.SetPyData(child, None)
  66             self.tree.SetItemImage(child, fldridx, wx.TreeItemIcon_Normal)
  67             self.tree.SetItemImage(child, fldropenidx, wx.TreeItemIcon_Expanded)
  68
  69             for y in range(5):
  70                 last = self.tree.AppendItem(child, "item %d-%s" % (x, chr(ord("a")+y)))
  71                 self.tree.SetPyData(last, None)
  72                 self.tree.SetItemImage(last, fldridx, wx.TreeItemIcon_Normal)
  73                 self.tree.SetItemImage(last, fldropenidx, wx.TreeItemIcon_Expanded)
  74
  75                 for z in range(5):
  76                     item = self.tree.AppendItem(last,  "item %d-%s-%d" % (x, chr(ord("a")+y), z))
  77                     self.tree.SetPyData(item, None)
  78                     self.tree.SetItemImage(item, fileidx, wx.TreeItemIcon_Normal)
  79                     self.tree.SetItemImage(item, smileidx, wx.TreeItemIcon_Selected)
  80
  81         self.tree.Expand(self.root)
  82         self.Bind(wx.EVT_TREE_ITEM_EXPANDED, self.OnItemExpanded, self.tree)
  83         self.Bind(wx.EVT_TREE_ITEM_COLLAPSED, self.OnItemCollapsed, self.tree)
  84         self.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnSelChanged, self.tree)
  85         self.Bind(wx.EVT_TREE_BEGIN_LABEL_EDIT, self.OnBeginEdit, self.tree)
  86         self.Bind(wx.EVT_TREE_END_LABEL_EDIT, self.OnEndEdit, self.tree)
  87         self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnActivate, self.tree)
  88
  89         self.tree.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick)
  90         self.tree.Bind(wx.EVT_RIGHT_DOWN, self.OnRightDown)
  91         self.tree.Bind(wx.EVT_RIGHT_UP, self.OnRightUp)
  92
  93
  94     def OnRightDown(self, event):
  95         pt = event.GetPosition();
  96         item, flags = self.tree.HitTest(pt)
  97         if item:
  98             self.log.WriteText("OnRightClick: %s, %s, %s\n" %
  99                                (self.tree.GetItemText(item), type(item), item.__class__))
 100             self.tree.SelectItem(item)
 101
 102
 103     def OnRightUp(self, event):
 104         pt = event.GetPosition();
 105         item, flags = self.tree.HitTest(pt)
 106         if item:
 107             self.log.WriteText("OnRightUp: %s (manually starting label edit)\n"
 108                                % self.tree.GetItemText(item))
 109             self.tree.EditLabel(item)
 110
 111
 112
 113     def OnBeginEdit(self, event):
 114         self.log.WriteText("OnBeginEdit\n")
 115         # show how to prevent edit...
 116         item = event.GetItem()
 117         if item and self.tree.GetItemText(item) == "The Root Item":
 118             wx.Bell()
 119             self.log.WriteText("You can't edit this one...\n")
 120
 121             # Lets just see what's visible of its children
 122             cookie = 0
 123             root = event.GetItem()
 124             (child, cookie) = self.tree.GetFirstChild(root)
 125
 126             while child.IsOk():
 127                 self.log.WriteText("Child [%s] visible = %d" %
 128                                    (self.tree.GetItemText(child),
 129                                     self.tree.IsVisible(child)))
 130                 (child, cookie) = self.tree.GetNextChild(root, cookie)
 131
 132             event.Veto()
 133
 134
 135     def OnEndEdit(self, event):
 136         self.log.WriteText("OnEndEdit: %s %s\n" %
 137                            (event.IsEditCancelled(), event.GetLabel()) )
 138         # show how to reject edit, we'll not allow any digits
 139         for x in event.GetLabel():
 140             if x in string.digits:
 141                 self.log.WriteText("You can't enter digits...\n")
 142                 event.Veto()
 143                 return
 144
 145
 146     def OnLeftDClick(self, event):
 147         pt = event.GetPosition();
 148         item, flags = self.tree.HitTest(pt)
 149         if item:
 150             self.log.WriteText("OnLeftDClick: %s\n" % self.tree.GetItemText(item))
 151             parent = self.tree.GetItemParent(item)
 152             if parent.IsOk():
 153                 self.tree.SortChildren(parent)
 154         event.Skip()
 155
 156
 157     def OnSize(self, event):
 158         w,h = self.GetClientSizeTuple()
 159         self.tree.SetDimensions(0, 0, w, h)
 160
 161
 162     def OnItemExpanded(self, event):
 163         item = event.GetItem()
 164         if item:
 165             self.log.WriteText("OnItemExpanded: %s\n" % self.tree.GetItemText(item))
 166
 167     def OnItemCollapsed(self, event):
 168         item = event.GetItem()
 169         if item:
 170             self.log.WriteText("OnItemCollapsed: %s\n" % self.tree.GetItemText(item))
 171
 172     def OnSelChanged(self, event):
 173         self.item = event.GetItem()
 174         if self.item:
 175             self.log.WriteText("OnSelChanged: %s\n" % self.tree.GetItemText(self.item))
 176             if wx.Platform == '__WXMSW__':
 177                 self.log.WriteText("BoundingRect: %s\n" %
 178                                    self.tree.GetBoundingRect(self.item, True))
 179             #items = self.tree.GetSelections()
 180             #print map(self.tree.GetItemText, items)
 181         event.Skip()
 182
 183
 184     def OnActivate(self, event):
 185         if self.item:
 186             self.log.WriteText("OnActivate: %s\n" % self.tree.GetItemText(self.item))
 187
 188
 189 #---------------------------------------------------------------------------
 190
 191 def runTest(frame, nb, log):
 192     win = TestTreeCtrlPanel(nb, log)
 193     return win
 194
 195 #---------------------------------------------------------------------------
 196
 197
 198
 199
 200
 201 overview = """\
 202 A TreeCtrl presents information as a hierarchy, with items that may be
 203 expanded to show further items. Items in a tree control are referenced by
 204 wx.TreeItemId handles.
 205
 206 """
 207
 208
 209
 210 if __name__ == '__main__':
 211     import sys,os
 212     import run
 213     run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
 214