iramuteq.org Git - iramuteq/blob - vitemspicker.py

   1 '''
   2 Created on Oct 3, 2010
   3
   4 @authors: Daphna Rosenbom,Gitty Zinger,Moshe Cohavi and Yoav Glazner
   5 The widget is contributed by NDS ltd under the same license as wxPython
   6
   7 items_picker.ItemsPicker:
   8 - Displays available items to choose from,</LI>
   9 - Selection is done by the Add button or Double Click,</LI>
  10 - De-Selection is done by the Remove button or Double Click,</LI>
  11
  12 Derived from wxPanel
  13 '''
  14 import wx
  15 from listlex import ListForSpec
  16 __version__ = 0.1
  17
  18 IP_DEFAULT_STYLE = 0
  19 IP_SORT_CHOICES = 1
  20 IP_SORT_SELECTED = 2
  21 IP_REMOVE_FROM_CHOICES = 4
  22
  23
  24 wxEVT_IP_SELECTION_CHANGED = wx.NewEventType()
  25 EVT_IP_SELECTION_CHANGED = wx.PyEventBinder(wxEVT_IP_SELECTION_CHANGED, 1)
  26 LB_STYLE = wx.LB_EXTENDED|wx.LB_HSCROLL
  27
  28
  29 class IpSelectionChanged(wx.PyCommandEvent):
  30     def __init__(self, id, items, object = None):
  31         wx.PyCommandEvent.__init__(self, wxEVT_IP_SELECTION_CHANGED, id)
  32         self.__items = items
  33         self.SetEventObject(object)
  34
  35     def GetItems(self):
  36         return self.__items
  37
  38
  39 class VItemsPicker(wx.Panel):
  40     '''
  41 ItemsPicker is a widget that allows the user to form a set of picked
  42 items out of a given list
  43 '''
  44     def __init__(self, parent, id=wx.ID_ANY, choices = [],
  45                  label = '', selectedLabel = '',
  46                  ipStyle = IP_DEFAULT_STYLE,
  47                  *args, **kw):
  48         '''
  49 ItemsPicker(parent, choices = [], label = '', selectedLabel = '',
  50 ipStyle = IP_DEFAULT_STYLE)
  51 '''
  52         self.parent = parent
  53         self._destData = {}
  54         wx.Panel.__init__(self, parent, id, *args, **kw)
  55         self._ipStyle = ipStyle
  56         sizer = wx.BoxSizer(wx.HORIZONTAL)
  57         sizer.Add(self._CreateSourceList(choices, label), 1,
  58                    wx.EXPAND|wx.ALL, 5)
  59         sizer.Add(self._CreateButtons(), 0, wx.ALIGN_CENTER|wx.ALL, 5)
  60         sizer.Add(self._CreateDestList(selectedLabel), 1,
  61                    wx.EXPAND|wx.ALL, 5)
  62         self.SetSizer(sizer)
  63
  64
  65     def SetItems(self, items):
  66         '''SetItems(self, items)=> None
  67 items - Sequence of strings that the user can pick from'''
  68         pass
  69         #return self._source.SetItems(items)
  70
  71
  72     def GetItems(self):
  73         '''GetItems(self)=> items
  74 returns list of strings that the user can pick from'''
  75         return self._source.GetItems()
  76
  77
  78     Items = property(fget = GetItems,
  79                      fset = SetItems,
  80                      doc = 'See GetItems/SetItems')
  81
  82
  83     def GetSelections(self):
  84         '''GetSelections(self)=>items
  85 returns list of strings that were selected
  86 '''
  87         return [self._destData[i][0] for i in self._destData]
  88
  89
  90     def SetSelections(self, items):
  91         '''SetSelections(self, items)=>None
  92 items - Sequence of strings to be selected
  93 The items are displayed in the selection part of the widget'''
  94         assert len(items)==len(set(items)),"duplicate items are not allowed"
  95         if items != self._dest.GetItems():
  96             self._dest.SetItems(items)
  97             self._FireIpSelectionChanged()
  98
  99
 100     Selections = property(fget = GetSelections,
 101                      fset = SetSelections,
 102                      doc = 'See GetSelections/SetSelections')
 103
 104
 105     def _CreateButtons(self):
 106         sizer = wx.BoxSizer(wx.VERTICAL)
 107         self.bAdd = wx.Button(self, -1, label = 'Add ->')
 108         self.bAdd.Bind(wx.EVT_BUTTON, self._OnAdd)
 109         self.bRemove = wx.Button(self, -1, label = '<- Remove')
 110         self.bRemove.Bind(wx.EVT_BUTTON, self._OnRemove)
 111         sizer.Add(self.bAdd, 0, wx.EXPAND|wx.ALL|wx.ALIGN_CENTER_VERTICAL, 5)
 112         sizer.Add(self.bRemove, 0, wx.EXPAND|wx.ALL, 5)
 113         return sizer
 114
 115
 116     def _set_add_button_label(self, label=None):
 117         if label is None:
 118             return
 119         self.bAdd.SetLabel(label)
 120
 121     add_button_label = property(fset = _set_add_button_label, fget = lambda x:x)
 122
 123
 124     def _set_remove_button_label(self, label=None):
 125         if label is None:
 126             return
 127         self.bRemove.SetLabel(label)
 128
 129     remove_button_label = property(fset = _set_remove_button_label, fget = lambda x:x)
 130
 131
 132     def _OnAdd(self, e):
 133         if self._ipStyle & IP_REMOVE_FROM_CHOICES:
 134             self._MoveItems(self._source,self._dest)
 135         else:
 136             self._AddSelectedItems()
 137
 138     def _MoveItems(self,source,dest):
 139         selections = source.GetSelections()
 140         selectedItems = map(source.GetString, selections)
 141         dest.SetItems(dest.GetItems() + selectedItems)
 142         selections = set(selections)
 143         #source.SetItems([item for i, item in enumerate(source.GetItems())\
 144         #              if i not in selections])
 145         self._FireIpSelectionChanged()
 146
 147     def _AddSelectedItems(self):
 148         newItems = self._source.getselectedwords()#map(self._source.GetString, self._source.GetSelections())
 149         items = [self._destData[i][0] for i in self._destData]
 150         oldItems = set(items)
 151         for newItem in newItems:
 152             if newItem not in oldItems:
 153                 self._destData[len(self._destData)] = [newItem, '']
 154                 self._SetDestItems()
 155                 self._source.selected[newItem] = 1
 156                 self._source.Refresh()
 157         #self.SetSelections(items)
 158         self._FireIpSelectionChanged()
 159
 160     def _FireIpSelectionChanged(self):
 161             self.GetEventHandler().ProcessEvent(
 162                         IpSelectionChanged(self.GetId(),
 163                                             None,
 164                                              self ))
 165
 166
 167     def _OnRemove(self, e):
 168         if self._ipStyle & IP_REMOVE_FROM_CHOICES:
 169             self._MoveItems(self._dest, self._source)
 170         else:
 171             self._RemoveSelected()
 172
 173     def _RemoveSelected(self):
 174         selections = self._dest.getselectedwords()
 175         if selections:
 176             #allItems = self._dest.GetItems()
 177             #items = [item for i, item in enumerate(allItems)\
 178             #          if i not in selections]
 179             #notselected = [item for i, item in enumerate(allItems)\
 180             #          if i in selections]
 181
 182             for item in selections :
 183                 print item
 184                 del self._source.selected[item]
 185             tokeep = [self._destData[i][0] for i in self._destData if self._destData[i][0] not in selections]
 186             self._destData = dict([[i, [word, '']] for i, word in enumerate(tokeep)])
 187             self._source.Refresh()
 188             self._SetDestItems()
 189             #self.SetSelections(items)
 190             self._FireIpSelectionChanged()
 191
 192
 193     def _CreateSourceList(self, items, label):
 194         style = LB_STYLE
 195         if self._ipStyle & IP_SORT_CHOICES:
 196             style |= wx.LB_SORT
 197         sizer = wx.BoxSizer(wx.VERTICAL)
 198         if label:
 199             sizer.Add(wx.StaticText(self, label = label), 0,
 200                        wx.ALIGN_LEFT|wx.ALL, 5)
 201         #self._source = wx.VListBox(self, -1, style = style)
 202         self._source = ListForSpec(self, self.parent, dlist = items, first = ['eff'], menu = True)
 203         self._source.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self._OnDClick)
 204         #self._source.Bind(wx.EVT_LISTBOX_DCLICK, self._OnDClick)
 205         #self._source.SetItems(items)
 206         sizer.Add(self._source, 1, wx.EXPAND|wx.ALL, 5)
 207         return sizer
 208
 209
 210     def _CreateDestList(self, label):
 211         style = LB_STYLE
 212         if self._ipStyle & IP_SORT_SELECTED:
 213             style |= wx.LB_SORT
 214         sizer = wx.BoxSizer(wx.VERTICAL)
 215         if label:
 216             sizer.Add(wx.StaticText(self, label = label), 0,
 217                        wx.ALIGN_LEFT|wx.ALL, 5)
 218         #self._dest = wx.ListBox(self, -1, style = style)
 219         self._dest = ListForSpec(self, self.parent, dlist = {}, first = ['eff'], menu = True)
 220         self._dest.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self._OnDClick)
 221         #self._dest.Bind(wx.EVT_LISTBOX_DCLICK, self._OnDClick)
 222         sizer.Add(self._dest, 1, wx.EXPAND|wx.ALL, 5)
 223         return sizer
 224
 225     def _SetDestItems(self):
 226         self._dest.itemDataMap = self._destData
 227         self._dest.itemIndexMap = self._destData.keys()
 228         self._dest.SetItemCount(len(self._destData))
 229         self._dest.Refresh()
 230
 231     def _OnDClick(self, e):
 232         lb = e.GetEventObject()
 233         selections = lb.GetSelections()
 234         if len(selections) != 1:
 235             return #DCLICK only works on one item
 236         #if e.GetSelection() != selections[0]:
 237             #this can happen using ^DCLICK when two items are selected
 238         #    return
 239         if lb == self._source:
 240             self._OnAdd(e)
 241         else:
 242             self._OnRemove(e)