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