diff options
Diffstat (limited to 'Tools')
| -rw-r--r-- | Tools/pynche/Switchboard.py | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Tools/pynche/Switchboard.py b/Tools/pynche/Switchboard.py index 9f2c64c..f67a1a9 100644 --- a/Tools/pynche/Switchboard.py +++ b/Tools/pynche/Switchboard.py @@ -10,6 +10,35 @@ conform to the following interface: should call update_views() on the Switchboard object. Not that the Viewer typically does *not* update itself before calling update_views(), since this would cause it to get updated twice. + +Optionally, Viewers can also implement: + + - save_options() which takes an optiondb (a dictionary). Store into this + dictionary any values the Viewer wants to save in the persistent + ~/.pynche file. This dictionary is saved using marshal. The namespace + for the keys is ad-hoc; make sure you don't clobber some other Viewer's + keys! + + - withdraw() which takes no arguments. This is called when Pynche is + unmapped. All Viewers should implement this. + + - colordb_changed() which takes a single argument, an instance of + ColorDB. This is called whenever the color name database is changed and + gives a chance for the Viewers to do something on those events. See + ListViewer for details. + +External Viewers are found dynamically. Viewer modules should have names such +as FooViewer.py. If such a named module has a module global variable called +ADDTOVIEW and this variable is true, the Viewer will be added dynamically to +the `View' menu. ADDTOVIEW contains a string which is used as the menu item +to display the Viewer (one kludge: if the string contains a `%', this is used +to indicate that the next character will get an underline in the menu, +otherwise the first character is underlined). + +FooViewer.py should contain a class called FooViewer, and its constructor +should take two arguments, an instance of Switchboard, and optionally a Tk +master window. + """ import sys @@ -65,6 +94,10 @@ class Switchboard: def set_colordb(self, colordb): self.__colordb = colordb + for v in self.__views: + if hasattr(v, 'colordb_changed'): + v.colordb_changed(colordb) + self.update_views_current() def optiondb(self): return self.__optiondb |