projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | import types |
| 2 | import Tkinter | |
| 3 | import Pmw | |
| 4 | ||
| 5 | class OptionMenu(Pmw.MegaWidget): | |
| 6 | ||
| 7 | def __init__(self, parent = None, **kw): | |
| 8 | ||
| 9 | # Define the megawidget options. | |
| 10 | INITOPT = Pmw.INITOPT | |
| 11 | optiondefs = ( | |
| 12 | ('command', None, None), | |
| 13 | ('items', (), INITOPT), | |
| 14 | ('initialitem', None, INITOPT), | |
| 15 | ('labelmargin', 0, INITOPT), | |
| 16 | ('labelpos', None, INITOPT), | |
| 17 | ('sticky', 'ew', INITOPT), | |
| 18 | ) | |
| 19 | self.defineoptions(kw, optiondefs) | |
| 20 | ||
| 21 | # Initialise the base class (after defining the options). | |
| 22 | Pmw.MegaWidget.__init__(self, parent) | |
| 23 | ||
| 24 | # Create the components. | |
| 25 | interior = self.interior() | |
| 26 | ||
| 27 | self._menubutton = self.createcomponent('menubutton', | |
| 28 | (), None, | |
| 29 | Tkinter.Menubutton, (interior,), | |
| 30 | borderwidth = 2, | |
| 31 | indicatoron = 1, | |
| 32 | relief = 'raised', | |
| 33 | anchor = 'c', | |
| 34 | highlightthickness = 2, | |
| 35 | direction = 'flush', | |
| 36 | takefocus = 1, | |
| 37 | ) | |
| 38 | self._menubutton.grid(column = 2, row = 2, sticky = self['sticky']) | |
| 39 | ||
| 40 | self._menu = self.createcomponent('menu', | |
| 41 | (), None, | |
| 42 | Tkinter.Menu, (self._menubutton,), | |
| 43 | tearoff=0 | |
| 44 | ) | |
| 45 | self._menubutton.configure(menu = self._menu) | |
| 46 | ||
| 47 | interior.grid_columnconfigure(2, weight = 1) | |
| 48 | interior.grid_rowconfigure(2, weight = 1) | |
| 49 | ||
| 50 | # Create the label. | |
| 51 | self.createlabel(interior) | |
| 52 | ||
| 53 | # Add the items specified by the initialisation option. | |
| 54 | self._itemList = [] | |
| 55 | self.setitems(self['items'], self['initialitem']) | |
| 56 | ||
| 57 | # Check keywords and initialise options. | |
| 58 | self.initialiseoptions() | |
| 59 | ||
| 60 | def setitems(self, items, index = None): | |
| 61 | ||
| 62 | # Clean up old items and callback commands. | |
| 63 | for oldIndex in range(len(self._itemList)): | |
| 64 | tclCommandName = str(self._menu.entrycget(oldIndex, 'command')) | |
| 65 | if tclCommandName != '': | |
| 66 | self._menu.deletecommand(tclCommandName) | |
| 67 | self._menu.delete(0, 'end') | |
| 68 | self._itemList = list(items) | |
| 69 | ||
| 70 | # Set the items in the menu component. | |
| 71 | for item in items: | |
| 72 | self._menu.add_command(label = item, | |
| 73 | command = lambda self = self, item = item: self._invoke(item)) | |
| 74 | ||
| 75 | # Set the currently selected value. | |
| 76 | if index is None: | |
| 77 | var = str(self._menubutton.cget('textvariable')) | |
| 78 | if var != '': | |
| 79 | # None means do not change text variable. | |
| 80 | return | |
| 81 | if len(items) == 0: | |
| 82 | text = '' | |
| 83 | elif str(self._menubutton.cget('text')) in items: | |
| 84 | # Do not change selection if it is still valid | |
| 85 | return | |
| 86 | else: | |
| 87 | text = items[0] | |
| 88 | else: | |
| 89 | index = self.index(index) | |
| 90 | text = self._itemList[index] | |
| 91 | ||
| 92 | self.setvalue(text) | |
| 93 | ||
| 94 | def getcurselection(self): | |
| 95 | var = str(self._menubutton.cget('textvariable')) | |
| 96 | if var == '': | |
| 97 | return str(self._menubutton.cget('text')) | |
| 98 | else: | |
| 99 | return self._menu.tk.globalgetvar(var) | |
| 100 | ||
| 101 | def getvalue(self): | |
| 102 | return self.getcurselection() | |
| 103 | ||
| 104 | def setvalue(self, text): | |
| 105 | var = str(self._menubutton.cget('textvariable')) | |
| 106 | if var == '': | |
| 107 | self._menubutton.configure(text = text) | |
| 108 | else: | |
| 109 | self._menu.tk.globalsetvar(var, text) | |
| 110 | ||
| 111 | def index(self, index): | |
| 112 | listLength = len(self._itemList) | |
| 113 | if type(index) == types.IntType: | |
| 114 | if index < listLength: | |
| 115 | return index | |
| 116 | else: | |
| 117 | raise ValueError, 'index "%s" is out of range' % index | |
| 118 | elif index is Pmw.END: | |
| 119 | if listLength > 0: | |
| 120 | return listLength - 1 | |
| 121 | else: | |
| 122 | raise ValueError, 'OptionMenu has no items' | |
| 123 | else: | |
| 124 | if index is Pmw.SELECT: | |
| 125 | if listLength > 0: | |
| 126 | index = self.getcurselection() | |
| 127 | else: | |
| 128 | raise ValueError, 'OptionMenu has no items' | |
| 129 | if index in self._itemList: | |
| 130 | return self._itemList.index(index) | |
| 131 | raise ValueError, \ | |
| 132 | 'bad index "%s": must be a ' \ | |
| 133 | 'name, a number, Pmw.END or Pmw.SELECT' % (index,) | |
| 134 | ||
| 135 | def invoke(self, index = Pmw.SELECT): | |
| 136 | index = self.index(index) | |
| 137 | text = self._itemList[index] | |
| 138 | ||
| 139 | return self._invoke(text) | |
| 140 | ||
| 141 | def _invoke(self, text): | |
| 142 | self.setvalue(text) | |
| 143 | ||
| 144 | command = self['command'] | |
| 145 | if callable(command): | |
| 146 | return command(text) |