Source Code for Module teamwork.widgets.cookbook

  1  from Tkinter import * 
  2  import Pmw 
  3   
  4 -class MultiListbox(Pmw.MegaWidget): 
  5 -    def __init__(self, master, lists, **kw): 
  6          optiondefs = ( 
  7              # Callbacks (dp) 
  8              ('doublecommand', None, None), 
  9              ('rowselectcommand', None, None), 
 10              ('colselectcommand', None, None), 
 11              ) 
 12          self.defineoptions(kw, optiondefs) 
 13          Pmw.MegaWidget.__init__(self, master) 
 14          self.lists = [] 
 15          for label,width in lists: 
 16              self.addList(label,width) 
 17          frame = Frame(self.component('hull')) 
 18          frame.pack(side='right', fill=Y) 
 19          Label(frame, borderwidth=1, relief='raised').pack(fill=X) 
 20          sb = Scrollbar(frame, orient='vertical', command=self._scroll) 
 21          sb.pack(expand='yes', fill='y') 
 22          self.lists[0]['yscrollcommand']=sb.set 
 23   
 24 -    def addList(self,label,width): 
 25          """dp""" 
 26          try: 
 27              frame = self.createcomponent('frame %s' % (label),(),None,Frame, 
 28                                           (self.component('hull'),)) 
 29          except ValueError: 
 30              # Already exists 
 31              return 
 32          frame.pack(side='left', expand='yes', fill='both') 
 33          widget = self.createcomponent('label %s' % (label),(),label,Label, 
 34                                        (frame, ), 
 35                                        text=label, borderwidth=1, 
 36                                        anchor='w',height=1,width=width, 
 37                                        relief='raised',wraplength=0) 
 38          widget.bind('<Button-1>', lambda e,s=self,l=label:s.selectColumn(e,l)) 
 39          widget.pack(fill='x') 
 40          lb = self.createcomponent('list %s' % (label),(),label,Listbox, 
 41                                    (frame, ), 
 42                                    width=width, borderwidth=0, 
 43                                    selectborderwidth=0, 
 44                                    relief='flat', exportselection='false') 
 45          lb.pack(expand='yes', fill='both') 
 46          self.lists.append(lb) 
 47          lb.bind('<Double-ButtonRelease-1>', lambda e, s=self: s._double(e)) 
 48          lb.bind('<B1-Motion>', lambda e, s=self: s._select(e.y)) 
 49          lb.bind('<Button-1>', lambda e, s=self: s._select(e.y)) 
 50          lb.bind('<Shift-1>', lambda e, s=self: s._select(e.y,'shift')) 
 51          lb.bind('<Control-1>', lambda e, s=self: s._select(e.y,'ctrl')) 
 52          lb.bind('<Leave>', lambda e: 'break') 
 53          lb.bind('<B2-Motion>', lambda e, s=self: s._b2motion(e.x, e.y)) 
 54          lb.bind('<Button-2>', lambda e, s=self: s._button2(e.x, e.y)) 
 55   
 56 -    def delList(self,label): 
 57          """dp""" 
 58          widget = self.component('list %s' % (label)) 
 59          for index in range(len(self.lists)): 
 60              if self.lists[index] is widget: 
 61                  break 
 62          else: 
 63              raise UserWarning,'Unable to find list %s to delete' % (label) 
 64          del self.lists[index] 
 65          self.destroycomponent('list %s' % (label)) 
 66          self.destroycomponent('label %s' % (label)) 
 67          self.destroycomponent('frame %s' % (label)) 
 68           
 69 -    def selectColumn(self,event,label): 
 70          """dp""" 
 71          self.selection_clear(0,'end') 
 72          widget = self.component('list %s' % (label)) 
 73          widget.selection_set(0,'end') 
 74          if self['colselectcommand']: 
 75              self['colselectcommand'](label) 
 76           
 77 -    def _select(self, y,modifier=None): 
 78          row = self.lists[0].nearest(y) 
 79          if modifier is None: 
 80              self.selection_clear(0, 'end') 
 81              self.selection_set(row) 
 82          elif modifier == 'shift': 
 83              selection = list(self.curselection()) 
 84              if row < selection[0]: 
 85                  self.selection_set(row,selection[0]) 
 86              else: 
 87                  self.selection_set(selection[0],row) 
 88          if self['rowselectcommand']: 
 89              self['rowselectcommand'](row) 
 90          return 'break' 
 91           
 92 -    def _double(self,event,modifier=None): 
 93          """dp""" 
 94          row = self.lists[0].nearest(event.y) 
 95          if self['doublecommand']: 
 96              self['doublecommand'](row,event) 
 97          return 'break' 
 98   
 99 -    def _button2(self, x, y): 
100          for l in self.lists: l.scan_mark(x, y) 
101          return 'break' 
102   
103 -    def _b2motion(self, x, y): 
104          for l in self.lists: l.scan_dragto(x, y) 
105          return 'break' 
106   
107 -    def _scroll(self, *args): 
108          for l in self.lists: 
109              apply(l.yview, args) 
110   
111 -    def curselection(self): 
112          return self.lists[0].curselection() 
113   
114 -    def delete(self, first, last=None): 
115          for l in self.lists: 
116              l.delete(first, last) 
117   
118 -    def get(self, first, last=None): 
119          result = [] 
120          for l in self.lists: 
121              result.append(l.get(first,last)) 
122          if last: return apply(map, [None] + result) 
123          return result 
124               
125 -    def index(self, index): 
126          self.lists[0].index(index) 
127   
128 -    def insert(self, index, *elements): 
129          for e in elements: 
130              i = 0 
131              for l in self.lists: 
132                  l.insert(index, e[i]) 
133                  i = i + 1 
134   
135 -    def size(self): 
136          return self.lists[0].size() 
137   
138 -    def see(self, index): 
139          for l in self.lists: 
140              l.see(index) 
141   
142 -    def selection_anchor(self, index): 
143          for l in self.lists: 
144              l.selection_anchor(index) 
145   
146 -    def selection_clear(self, first, last=None): 
147          for l in self.lists: 
148              l.selection_clear(first, last) 
149   
150 -    def selection_includes(self, index): 
151          return self.lists[0].selection_includes(index) 
152   
153 -    def selection_set(self, first, last=None): 
154          for l in self.lists: 
155              l.selection_set(first, last) 
156   
157  if __name__ == '__main__': 
158      tk = Tk() 
159      Label(tk, text='MultiListbox').pack() 
160      mlb = MultiListbox(tk, (('Subject', 40), ('Sender', 20), ('Date', 10))) 
161      for i in range(1000): 
162          mlb.insert(END, ('Important Message: %d' % i, 'John Doe', '10/10/%04d' % (1900+i))) 
163      mlb.pack(expand=YES,fill=BOTH) 
164      tk.mainloop() 
165