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Refactor code for numeric validation in numeric wxPG properties

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Move template function NumericValidation() to wxNumericProperty because all data necessary to validate the value are available here: acceptable value range, SpinCtrl editor value wrapping mode, etc.
This commit is contained in:
Artur Wieczorek
2019-06-28 21:16:58 +02:00
parent 69632371e3
commit 48adc38bbb
3 changed files with 134 additions and 149 deletions
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273
src/propgrid/props.cpp
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@@ -261,6 +261,123 @@ bool wxNumericProperty::DoSetAttribute(const wxString& name, wxVariant& value)
}
return wxPGProperty::DoSetAttribute(name, value);
}
namespace {
// This function by default doesn't modify the value.
// For argument 'value' of type 'double' there is a specialized function (below).
template<typename T>
T GetRoundedValue(const wxPGProperty* prop, T value)
{
wxUnusedVar(prop);
return value;
}
// Specialized function for floating-point values
// takes into account required precision of the numbers
// to avoid rounding and conversion errors.
template<>
double GetRoundedValue(const wxPGProperty* prop, double value)
{
// Round value to the required precision.
wxVariant variant = value;
wxString strVal = prop->ValueToString(variant, wxPG_FULL_VALUE);
strVal.ToDouble(&value);
return value;
}
} // namespace
// Common validation code to be called in ValidateValue() implementations.
// Note that 'value' is reference on purpose, so we can write
// back to it when mode is wxPG_PROPERTY_VALIDATION_SATURATE or wxPG_PROPERTY_VALIDATION_WRAP.
template<typename T>
bool wxNumericProperty::DoNumericValidation(T& value, wxPGValidationInfo* pValidationInfo,
int mode, T defMin, T defMax) const
{
T min = defMin;
T max = defMax;
wxVariant variant;
bool minOk = false;
bool maxOk = false;
// Round current value to the required precision, if applicable
value = GetRoundedValue<T>(this, value);
variant = m_minVal;
if ( !variant.IsNull() )
{
minOk = variant.Convert(&min);
}
if ( minOk )
{
// Round minimal value to the required precision, if applicable
min = GetRoundedValue<T>(this, min);
}
variant = m_maxVal;
if ( !variant.IsNull() )
{
maxOk = variant.Convert(&max);
}
if ( maxOk )
{
// Round maximal value to the required precision, if applicable
max = GetRoundedValue<T>(this, max);
}
if ( minOk )
{
if ( value < min )
{
if ( mode == wxPG_PROPERTY_VALIDATION_ERROR_MESSAGE )
{
wxString msg;
wxVariant vmin = WXVARIANT(min);
wxString smin = ValueToString(vmin);
if ( !maxOk )
msg = wxString::Format(_("Value must be %s or higher."), smin);
else
{
wxVariant vmax = WXVARIANT(max);
wxString smax = ValueToString(vmax);
msg = wxString::Format(_("Value must be between %s and %s."), smin, smax);
}
pValidationInfo->SetFailureMessage(msg);
}
else if ( mode == wxPG_PROPERTY_VALIDATION_SATURATE )
value = min;
else
value = max - (min - value);
return false;
}
}
if ( maxOk )
{
if ( value > max )
{
if ( mode == wxPG_PROPERTY_VALIDATION_ERROR_MESSAGE )
{
wxString msg;
wxVariant vmax = WXVARIANT(max);
wxString smax = ValueToString(vmax);
if ( !minOk )
msg = wxString::Format(_("Value must be %s or less."), smax);
else
{
wxVariant vmin = WXVARIANT(min);
wxString smin = ValueToString(vmin);
msg = wxString::Format(_("Value must be between %s and %s."), smin, smax);
}
pValidationInfo->SetFailureMessage(msg);
}
else if ( mode == wxPG_PROPERTY_VALIDATION_SATURATE )
value = max;
else
value = min + (value - max);
return false;
}
}
return true;
}
// -----------------------------------------------------------------------
// wxIntProperty
@@ -384,143 +501,13 @@ bool wxIntProperty::IntToValue( wxVariant& variant, int value, int WXUNUSED(argF
return false;
}
namespace {
// This function by default doesn't modify the value.
// For argument 'value' of type 'double' there is a specialized function (below).
template<typename T>
T GetRoundedValue(const wxPGProperty* prop, T value)
{
wxUnusedVar(prop);
return value;
}
// Specialized function for floating-point values
// takes into account required precision of the numbers
// to avoid rounding and conversion errors.
template<>
double GetRoundedValue(const wxPGProperty* prop, double value)
{
// Round value to the required precision.
wxVariant variant = value;
wxString strVal = prop->ValueToString(variant, wxPG_FULL_VALUE);
strVal.ToDouble(&value);
return value;
}
// Common validation code to be called in ValidateValue()
// implementations.
// Note that 'value' is reference on purpose, so we can write
// back to it when mode is wxPG_PROPERTY_VALIDATION_SATURATE or wxPG_PROPERTY_VALIDATION_WRAP.
template<typename T>
bool NumericValidation( const wxNumericProperty* property,
T& value,
wxPGValidationInfo* pValidationInfo,
int mode, T defMin, T defMax)
{
T min = defMin;
T max = defMax;
wxVariant variant;
bool minOk = false;
bool maxOk = false;
// Round current value to the required precision, if applicable
value = GetRoundedValue<T>(property, value);
variant = property->GetMinVal();
if ( !variant.IsNull() )
{
minOk = variant.Convert(&min);
}
if ( minOk )
{
// Round minimal value to the required precision, if applicable
min = GetRoundedValue<T>(property, min);
}
variant = property->GetMaxVal();
if ( !variant.IsNull() )
{
maxOk = variant.Convert(&max);
}
if ( maxOk )
{
// Round maximal value to the required precision, if applicable
max = GetRoundedValue<T>(property, max);
}
if ( minOk )
{
if ( value < min )
{
if ( mode == wxPG_PROPERTY_VALIDATION_ERROR_MESSAGE )
{
wxString msg;
wxVariant vmin = WXVARIANT(min);
wxString smin = property->ValueToString(vmin);
if ( !maxOk )
msg = wxString::Format(
_("Value must be %s or higher."),
smin);
else
{
wxVariant vmax = WXVARIANT(max);
wxString smax = property->ValueToString(vmax);
msg = wxString::Format(
_("Value must be between %s and %s."),
smin, smax);
}
pValidationInfo->SetFailureMessage(msg);
}
else if ( mode == wxPG_PROPERTY_VALIDATION_SATURATE )
value = min;
else
value = max - (min - value);
return false;
}
}
if ( maxOk )
{
if ( value > max )
{
if ( mode == wxPG_PROPERTY_VALIDATION_ERROR_MESSAGE )
{
wxString msg;
wxVariant vmax = WXVARIANT(max);
wxString smax = property->ValueToString(vmax);
if ( !minOk )
msg = wxString::Format(
_("Value must be %s or less."),
smax);
else
{
wxVariant vmin = WXVARIANT(min);
wxString smin = property->ValueToString(vmin);
msg = wxString::Format(
_("Value must be between %s and %s."),
smin, smax);
}
pValidationInfo->SetFailureMessage(msg);
}
else if ( mode == wxPG_PROPERTY_VALIDATION_SATURATE )
value = max;
else
value = min + (value - max);
return false;
}
}
return true;
}
} // namespace
#if wxUSE_LONGLONG
bool wxIntProperty::DoValidation( const wxNumericProperty* property,
wxLongLong& value,
wxPGValidationInfo* pValidationInfo,
int mode )
{
return NumericValidation<wxLongLong>(property,
value,
return property->DoNumericValidation<wxLongLong>(value,
pValidationInfo,
mode, wxLongLong(LLONG_MIN), wxLongLong(LLONG_MAX));
}
@@ -531,8 +518,8 @@ bool wxIntProperty::DoValidation( const wxNumericProperty* property,
wxPGValidationInfo* pValidationInfo,
int mode )
{
return NumericValidation<wxLongLong_t>(property, value, pValidationInfo,
mode, LLONG_MIN, LLONG_MAX);
return property->DoNumericValidation<wxLongLong_t>(value, pValidationInfo,
mode, LLONG_MIN, LLONG_MAX);
}
#endif // wxLongLong_t
#endif // wxUSE_LONGLONG
@@ -542,8 +529,8 @@ bool wxIntProperty::DoValidation(const wxNumericProperty* property,
wxPGValidationInfo* pValidationInfo,
int mode)
{
return NumericValidation<long>(property, value, pValidationInfo,
mode, LONG_MIN, LONG_MAX);
return property->DoNumericValidation<long>(value, pValidationInfo,
mode, LONG_MIN, LONG_MAX);
}
bool wxIntProperty::ValidateValue( wxVariant& value,
@@ -796,7 +783,7 @@ bool wxUIntProperty::DoValidation(const wxNumericProperty* property,
wxPGValidationInfo* pValidationInfo,
int mode )
{
return NumericValidation<wxULongLong>(property, value, pValidationInfo,
return property->DoNumericValidation<wxULongLong>(value, pValidationInfo,
mode, wxULongLong(0), wxULongLong(ULLONG_MAX));
}
@@ -806,8 +793,8 @@ bool wxUIntProperty::DoValidation(const wxNumericProperty* property,
wxPGValidationInfo* pValidationInfo,
int mode )
{
return NumericValidation<wxULongLong_t>(property, value, pValidationInfo,
mode, 0, ULLONG_MAX);
return property->DoNumericValidation<wxULongLong_t>(value, pValidationInfo,
mode, 0, ULLONG_MAX);
}
#endif // wxULongLong_t
#endif // wxUSE_LONGLONG
@@ -817,8 +804,8 @@ bool wxUIntProperty::DoValidation(const wxNumericProperty* property,
wxPGValidationInfo* pValidationInfo,
int mode)
{
return NumericValidation<long>(property, value, pValidationInfo,
mode, 0, ULONG_MAX);
return property->DoNumericValidation<long>(value, pValidationInfo,
mode, 0, ULONG_MAX);
}
bool wxUIntProperty::ValidateValue( wxVariant& value, wxPGValidationInfo& validationInfo ) const
@@ -1042,10 +1029,8 @@ bool wxFloatProperty::DoValidation( const wxNumericProperty* property,
wxPGValidationInfo* pValidationInfo,
int mode )
{
return NumericValidation<double>(property,
value,
pValidationInfo,
mode, DBL_MIN, DBL_MAX);
return property->DoNumericValidation<double>(value, pValidationInfo,
mode, DBL_MIN, DBL_MAX);
}
bool