69 lines
1.6 KiB
C++
69 lines
1.6 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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TranslatableStringArray.h
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Paul Licameli
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**********************************************************************/
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#ifndef __AUDACITY_TRANSLATABLE_STRING_ARRAY__
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#define __AUDACITY_TRANSLATABLE_STRING_ARRAY__
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#include <wx/app.h>
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class wxArrayStringEx;
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wxDECLARE_EXPORTED_EVENT(AUDACITY_DLL_API, EVT_LANGUAGE_CHANGE, wxCommandEvent);
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/*
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This class can maintain a static table containing user visible strings that updates
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itself properly when the language is changed in Preferences.
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Typical usage is to define a derived class, override Populate(), and then
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make a singleton instance of the class.
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Populate() is called only as needed to fill the table on demand the first
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time it is used after application startup or language change.
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*/
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template<typename ArrayType> class TranslatableArray /* not final */
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: public wxEvtHandler
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{
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public:
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TranslatableArray()
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{
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if (wxTheApp)
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wxTheApp->Bind(EVT_LANGUAGE_CHANGE,
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&TranslatableArray::Invalidate,
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this);
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}
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const ArrayType& Get()
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{
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if (mContents.empty())
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Populate();
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return mContents;
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}
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protected:
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// Override this function to fill in mContents,
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// typically by lines like
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// mContents.push_back(_("Translate me"));
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virtual void Populate() = 0;
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void Invalidate(wxCommandEvent &evt)
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{
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mContents.clear();
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evt.Skip();
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}
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ArrayType mContents;
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};
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typedef TranslatableArray<wxArrayStringEx> TranslatableStringArray;
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#endif
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