By default, an attribute that belongs to the UID group 0 is taken into
the node's UID computation independently from its value, as long as it is
enabled.
When such an attribute is added to a node's list of attributes, it
automatically invalidates all computations made for this node prior to
its addition.
This commits adds a new attribute property, "uidIgnoreValue". This property
determines whether the attribute must be taken into consideration during
the node's UID computation: if the value of the attribute is the same as
"uidIgnoreValue", then it should be ignored; otherwise, it should be taken
into account. By default, "uidIgnoreValue" is set to "None", meaning that
any attribute that may be considered during the UID computation will be
taken into account.
In the context of the internal attributes, "uidIgnoreValue" is set to empty
string, so the "invalidation" attribute will not automatically
invalidate 100% of the nodes from existing graphs until its value is set
to a non-empty string.
- "pyCompatibility.basestring" are replaced by standard Python3 "str"
- "Sequence" and "Iterable" from "collections" are now directly imported
with "collections.abc"
If an attribute is a link, when checking whether its value is
the default value, only the resolved value should be compared
with the default one. Otherwise, the attribute's "isDefault"
property will always evaluate to True, even when a non-default
link has been provided.
This issue was especially evident with input File attributes,
for which the default value is generally '' (empty string); if a
link was set as a value (thus non-empty), its unresolved value
would still be '', thus setting the "isDefault" property to True.
Adding new properties and updating the call to previous ones.
Properties are now :
* label : getLabel
* fullLabel : getFullLabel
* fullLabelToNode : getFullLabelToNode
* fullLabelToGraph : getFullLabelToGraph
Same for the name.
Graph.markNodesDirty() is called in three different places:
- Attribute.requestGraphUpdate()
- Graph.addEdge()
- Graph.removeEdge()
However, addEdge() and removeEdge() are especially decorated to request a graph update so, with the old markNodesDirty() implementation, the update was done twice in a row.
The new property "enabled" allows to define a lambda to dynamically enable/disable parameters.
Disabled parameters are not used in the uid, not exported to the command line and not visible in the interface.
