* src/AutoComp.py (StandardCustomSelector): Add class to handle

(int,str) selections including custom strings.


svn: r4741

ChangeLog

@@ -1,3 +1,7 @@
+2005-05-31  Alex Roitman  <shura@gramps-project.org>
+	* src/AutoComp.py (StandardCustomSelector): Add class to handle
+	(int,str) selections including custom strings.
+
 2005-05-30  Alex Roitman  <shura@gramps-project.org>
 	* src/RelLib.py: Move constants back to RelLib, as class attributes.
 	* src/Utils.py: Move constant mappings from const.py.in.

src/AutoComp.py

@@ -1,7 +1,7 @@
 #
 # Gramps - a GTK+/GNOME based genealogy program
 #
-# Copyright (C) 2002-2003  Donald N. Allingham
+# Copyright (C) 2002-2005  Donald N. Allingham
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -63,3 +63,109 @@ def fill_option_text(combobox,data):
 def get_option(combobox):
     store = combobox.get_model()
     return store.get_value(combobox.get_active_iter(),0)
+
+
+#-------------------------------------------------------------------------
+#
+# StandardCustomSelector class
+#
+#-------------------------------------------------------------------------
+class StandardCustomSelector:
+    """
+    This class provides an interface to selecting from the predefined
+    options or entering custom string.
+
+    The typical usage should be:
+        sce = StandardCustomSelector(mapping,custom_key,active_key)
+        whatever_table.attach(sce,...)
+
+    and later, when or before the dialog is closed, do:
+        (i,s) = sce.get_values()
+
+    to obtain the tuple of (int,str) corresponding to the user selection.
+
+    No selection will return (custom_key,'') if the custom key is given,
+    or (None,'') if it is not given.
+
+    The active_key determines the default selection that will be displayed
+    upon widget creation. If omitted, the entry will be empty. If present,
+    then no selection on the user's part will return the
+    (active_key,mapping[active_key]) tuple.
+        
+    """
+    def __init__(self,mapping,custom_key=None,active_key=None):
+        """
+        Constructor for the StandardCustomSelector class.
+
+        @param mapping: The mapping between integer and string constants.
+        @type mapping:  dict
+        @param custom_key: The key corresponding to the custom string entry
+        @type custom_key:  int
+        @param active_key: The key for the entry to make active upon creation
+        @type active_key:  int
+        """
+        self.mapping = mapping
+        self.custom_key = custom_key
+        self.active_key = active_key
+        self.active_index = 0
+        # make model
+        self.store = gtk.ListStore(gobject.TYPE_INT,gobject.TYPE_STRING)
+        # fill it up using mapping
+        self.fill()
+        # create combo box entry
+        self.selector = gtk.ComboBoxEntry(self.store,1)
+        if self.active_key:
+            self.selector.set_active(self.active_index)
+
+    def fill(self):
+        keys = self.mapping.keys()
+        keys.sort(self.by_value)
+        index = 0
+        for key in keys:
+            if key != self.custom_key:
+                self.store.append(row=[key,self.mapping[key]])
+                if key == self.active_key:
+                    self.active_index = index
+                index = index + 1
+
+    def by_value(self,f,s):
+        """
+        Method for sorting keys based on the values.
+        """
+        fv = self.mapping[f]
+        sv = self.mapping[s]
+        return cmp(fv,sv)
+
+    def get_values(self):
+        """
+        Get selected values.
+
+        @return: Returns a tuple of (int,str) corresponding to the selected or entered text.
+        @rtype: tuple
+        """
+        ai = self.selector.get_active_iter()
+        if ai:
+            i = self.store.get_value(ai,0)
+            s = self.store.get_value(ai,1)
+            return (i,s)
+        entry = self.selector.child
+        return (self.custom_key,entry.get_text())
+
+
+#-------------------------------------------------------------------------
+#
+# Testing code below this point
+#
+#-------------------------------------------------------------------------
+if __name__ == "__main__":
+    def here(obj,event):
+        print s.get_values()
+        gtk.main_quit()
+
+
+    s = StandardCustomSelector({0:'a',1:'b',2:'c'},0)
+    w = gtk.Dialog()
+    w.child.add(s.selector)
+    w.connect('delete-event',here)
+    w.show_all()
+    gtk.main()