root/gaphor/tags/gaphor-0.12.5/gaphor/adapters/relationships.py

Revision 2054, 1.8 kB (checked in by wrobe..@pld-linux.org, 1 year ago)

- it is not ready yet, therefore commented out to allow run unit tests

nicely

Line 
1 """
2
3 This module is not yet ready to be used for adapters.
4
5 Here the logic should be placed that allows the application to draw already
6 existing relationships on the diagram when a model element is added (e.g.
7 by drag and drop).
8 """
9
10 from zope import component
11
12
13 ###class AssociationRelationship(Relationship):
14 ###    """Relationship for associations.
15 ###    """
16 ###    def relationship(self, line, head_subject = None, tail_subject = None):
17 ###        # First check if we do not already contain the right subject:
18 ###        if line.subject:
19 ###            end1 = line.subject.memberEnd[0]
20 ###            end2 = line.subject.memberEnd[1]
21 ###            if (end1.type is head_type and end2.type is tail_type) \
22 ###               or (end2.type is head_type and end1.type is tail_type):
23 ###                return
24 ###               
25 ###        # Find all associations and determine if the properties on the
26 ###        # association ends have a type that points to the class.
27 ###        Association = UML.Association
28 ###        for assoc in resource(UML.ElementFactory).itervalues():
29 ###            if isinstance(assoc, Association):
30 ###                #print 'assoc.memberEnd', assoc.memberEnd
31 ###                end1 = assoc.memberEnd[0]
32 ###                end2 = assoc.memberEnd[1]
33 ###                if (end1.type is head_type and end2.type is tail_type) \
34 ###                   or (end2.type is head_type and end1.type is tail_type):
35 ###                    # check if this entry is not yet in the diagram
36 ###                    # Return if the association is not (yet) on the canvas
37 ###                    for item in assoc.presentation:
38 ###                        if item.canvas is line.canvas:
39 ###                            break
40 ###                    else:
41 ###                        return assoc
42 ###        return None
43
44
45 # vim:sw=4:et:ai
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