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audacity/src/ComponentInterfaceSymbol.h

83 lines
3.0 KiB
C++

/**********************************************************************
Audacity: A Digital Audio Editor
@file ComponentInterfaceSymbol.h
Paul Licameli split from ComponentInterface.h
**********************************************************************/
#ifndef __AUDACITY_COMPONENT_INTERFACE_SYMBOL__
#define __AUDACITY_COMPONENT_INTERFACE_SYMBOL__
#include "Identifier.h"
#include "Internat.h"
/**************************************************************************//**
\brief ComponentInterfaceSymbol pairs a persistent string identifier used internally
with an optional, different string as msgid for lookup in a translation catalog.
\details If there is need to change a msgid in a later version of the
program, change the constructor call to supply a second argument but leave the
first the same, so that compatibility of older configuration files containing
that internal string is not broken.
********************************************************************************/
class ComponentInterfaceSymbol
{
public:
ComponentInterfaceSymbol() = default;
// Allows implicit construction from a msgid re-used as an internal string
ComponentInterfaceSymbol( const TranslatableString &msgid )
: mInternal{ msgid.MSGID().GET(), }, mMsgid{ msgid }
{}
// Allows implicit construction from an internal string re-used as a msgid
ComponentInterfaceSymbol( const wxString &internal )
: mInternal{ internal }, mMsgid{ internal, {} }
{}
// Allows implicit construction from an internal string re-used as a msgid
ComponentInterfaceSymbol( const wxChar *msgid )
: mInternal{ msgid }, mMsgid{ msgid, {} }
{}
// Two-argument version distinguishes internal from translatable string
// such as when the first squeezes spaces out
ComponentInterfaceSymbol( const Identifier &internal,
const TranslatableString &msgid )
: mInternal{ internal.GET() }
// Do not permit non-empty msgid with empty internal
, mMsgid{ internal.empty() ? TranslatableString{} : msgid }
{}
const wxString &Internal() const { return mInternal; }
const TranslatableString &Msgid() const { return mMsgid; }
const TranslatableString Stripped() const { return mMsgid.Stripped(); }
const wxString Translation() const { return mMsgid.Translation(); }
const wxString StrippedTranslation() const
{ return Stripped().Translation(); }
bool empty() const { return mInternal.empty(); }
friend inline bool operator == (
const ComponentInterfaceSymbol &a, const ComponentInterfaceSymbol &b )
{ return a.mInternal == b.mInternal; }
friend inline bool operator != (
const ComponentInterfaceSymbol &a, const ComponentInterfaceSymbol &b )
{ return !( a == b ); }
private:
wxString mInternal;
TranslatableString mMsgid;
};
// TODO: real type distinctions for these aliases, and move them elsewhere
using EnumValueSymbol = ComponentInterfaceSymbol;
using NumericFormatSymbol = EnumValueSymbol;
using EffectFamilySymbol = ComponentInterfaceSymbol;
#endif