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Add new ‘listener-safe’ SGProperty attribute

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Used in FG to make certain tied properties as safe to use with
listeners, and hence suppress the warning.
This commit is contained in:
James Turner 2019-10-20 13:03:15 +01:00
parent 4b1a53367f
commit 0a7514c47b
2 changed files with 2 additions and 1 deletions
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2
simgear/props/props.cxx
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@ -849,7 +849,7 @@ SGPropertyNode::trace_read () const
* Last used attribute * Last used attribute
* Update as needed when enum Attribute is changed * Update as needed when enum Attribute is changed
*/ */
const int SGPropertyNode::LAST_USED_ATTRIBUTE = PROTECTED; const int SGPropertyNode::LAST_USED_ATTRIBUTE = LISTENER_SAFE;
/** /**
* Default constructor: always creates a root node. * Default constructor: always creates a root node.

1
simgear/props/props.hxx
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@ -821,6 +821,7 @@ public:
USERARCHIVE = 64, USERARCHIVE = 64,
PRESERVE = 128, PRESERVE = 128,
PROTECTED = 1 << 8, PROTECTED = 1 << 8,
LISTENER_SAFE = 1 << 9, /// it's safe to listen to this property, even if it's tied
// beware: if you add another attribute here, // beware: if you add another attribute here,
// also update value of "LAST_USED_ATTRIBUTE". // also update value of "LAST_USED_ATTRIBUTE".
}; };