Source Code for Module vqt.menubuilder

 1  
 
 2  from PyQt4 import QtCore, QtGui 
 3  
 
 4 -class FieldAdder: 
 5  
 
 6 -    def __init__(self, splitchar='.'): 
 7          self.kids = {} 
 8          self.splitchar = splitchar 
 9          self._dyn_callback = None 
10  
 
11 -    def _addMenuFields(self, plist): 
12          parent = self 
13          kid = self 
14          for p in plist: 
15              kid = parent.kids.get(p) 
16              if kid == None: 
17                  kid = VQMenu(p, parent=parent, splitchar=self.splitchar) 
18                  action = parent.addMenu(kid) 
19                  parent.kids[p] = kid 
20              parent = kid 
21  
 
22          return kid 
23  
 
24 -    def _addDynActions(self): 
25          self.clear() 
26          for name in self._dyn_callback(): 
27              act = QtGui.QAction(name, self) 
28              cb = ActionCall(self._dyn_callback, name) 
29              act.connect(act, QtCore.SIGNAL('triggered()'), cb) 
30              self.addAction(act) 
31  
 
32 -    def addDynMenu(self, pathstr, callback): 
33          '''
 
34          Add a dynamic menu item which will populate on-hover by asking
 
35          the specified callback for a list of actions.
 
36  
 
37          Example:
 
38              def callback(name=None):
 
39  
 
40                  if name == None:
 
41                      return ('one', 'two', 'three')
 
42  
 
43                  print('SELECTED: %s' % name)
 
44  
 
45              m.addDynMenu( callback )
 
46          ''' 
47          plist = pathstr.split(self.splitchar) 
48          menu = self._addMenuFields( plist ) 
49          menu._dyn_callback = callback 
50          menu.connect(menu, QtCore.SIGNAL('aboutToShow()'), menu._addDynActions) 
51  
 
52 -    def addField(self, pathstr, callback=None, args=(), tip=None): 
53          plist = pathstr.split(self.splitchar) 
54          kid = self._addMenuFields(plist[:-1]) 
55  
 
56          acall = ActionCall( callback, *args ) 
57          action = QtGui.QAction(plist[-1], kid) 
58          action.connect(action, QtCore.SIGNAL('triggered()'), acall) 
59  
 
60          if tip: action.setStatusTip(tip) 
61  
 
62          kid.addAction(action) 
63  
 
64          return kid 
65  
 
66 -class VQMenuBar(FieldAdder, QtGui.QMenuBar): 
67 -    def __init__(self, parent=None, splitchar='.'): 
68          QtGui.QMenuBar.__init__(self, parent=parent) 
69          FieldAdder.__init__(self, splitchar=splitchar) 
70  
 
71 -class VQMenu(FieldAdder, QtGui.QMenu): 
72  
 
73 -    def __init__(self, name, parent=None, splitchar='.'): 
74          QtGui.QMenu.__init__(self, name, parent=parent) 
75          FieldAdder.__init__(self, splitchar=splitchar) 
76  
 
77 -class ActionCall: 
78  
 
79 -    def __init__(self, callback, *args, **kwargs): 
80          self.args = args 
81          self.kwargs = kwargs 
82          self.callback = callback 
83  
 
84 -    def __call__(self): 
85          return self.callback(*self.args, **self.kwargs) 
86