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IMPORTANT: backwards-incompatible change to properties.

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The useDefault argument for the SGPropertyNode::tie(...) methods will
invoke the setter only when there is already a property value defined;
previously, the setter was always invoked, with a default value if
necessary.
This commit is contained in:
david
2002-02-19 15:20:02 +00:00
parent 2d4a8774b8
commit aef809348f
1 changed files with 6 additions and 0 deletions
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6
simgear/misc/props.cxx
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@@ -1117,6 +1117,7 @@ SGPropertyNode::tie (const SGRawValue<bool> &rawValue, bool useDefault)
if (_type == ALIAS || _tied)
return false;
useDefault = useDefault && hasValue();
bool old_val = false;
if (useDefault)
old_val = getBoolValue();
@@ -1138,6 +1139,7 @@ SGPropertyNode::tie (const SGRawValue<int> &rawValue, bool useDefault)
if (_type == ALIAS || _tied)
return false;
useDefault = useDefault && hasValue();
int old_val = 0;
if (useDefault)
old_val = getIntValue();
@@ -1159,6 +1161,7 @@ SGPropertyNode::tie (const SGRawValue<long> &rawValue, bool useDefault)
if (_type == ALIAS || _tied)
return false;
useDefault = useDefault && hasValue();
long old_val = 0;
if (useDefault)
old_val = getLongValue();
@@ -1180,6 +1183,7 @@ SGPropertyNode::tie (const SGRawValue<float> &rawValue, bool useDefault)
if (_type == ALIAS || _tied)
return false;
useDefault = useDefault && hasValue();
float old_val = 0.0;
if (useDefault)
old_val = getFloatValue();
@@ -1201,6 +1205,7 @@ SGPropertyNode::tie (const SGRawValue<double> &rawValue, bool useDefault)
if (_type == ALIAS || _tied)
return false;
useDefault = useDefault && hasValue();
double old_val = 0.0;
if (useDefault)
old_val = getDoubleValue();
@@ -1223,6 +1228,7 @@ SGPropertyNode::tie (const SGRawValue<string> &rawValue, bool useDefault)
if (_type == ALIAS || _tied)
return false;
useDefault = useDefault && hasValue();
string old_val;
if (useDefault)
old_val = getStringValue();