% authortitle-dw.cbx, Dominik Waßenhoven 2023
  
\ProvidesFile{authortitle-dw.cbx}[2023/03/11 v1.7b biblatex citation style]

\RequireCitationStyle{standard-dw}

\newbool{cbx:addyear}
\newbool{cbx:firstfull}
\newbool{cbx:inref}% Option inreference (true: inreference=full; false: inreference=normal)
\newbool{cbx:inreffull}% für fullcite bei inreference (nur bei Option inreference=full)

\DeclareBibliographyOption{addyear}[true]{%
  \csuse{bool#1}{cbx:addyear}}

\DeclareBibliographyOption{firstfull}[true]{%
  \csuse{bool#1}{cbx:firstfull}}

\DeclareBibliographyOption{inreference}[normal]{%
  \ifcsdef{cbx@opt@inreference@#1}
    {\csuse{cbx@opt@inreference@#1}}
    {\blxdw@error
       {Invalid option 'inreference=#1'\MessageBreak
        Valid values are 'normal' and 'full'}}}
\def\cbx@opt@inreference@normal{%
	\boolfalse{cbx:inref}}
\def\cbx@opt@inreference@full{%
	\booltrue{cbx:inref}%
	\ExecuteBibliographyOptions[inreference]{skipbib=true,}}

% Test, ob inreference genutzt wird
\AtEveryCitekey{%
  \ifentrytype{inreference}
    {\ifbool{cbx:inref}
      {\booltrue{cbx:inreffull}}
      {\boolfalse{cbx:inreffull}}}
    {}}

%% Zeichen zwischen Titel und Jahr (bei addyear=true)
\newcommand*{\titleyeardelim}{\addspace}
  
\newbibmacro*{cite}{%
  \usebibmacro{cite:citepages}%
  \global\boolfalse{cbx:loccit}%
  \ifbool{cbx:inreffull}
  	{\usebibmacro{cite:inreffull}}
    {\ifbool{cbx:firstfull}
      {\ifciteseen
        {\usebibmacro{cite:normal}}
        {\usebibmacro{cite:firstfull}}}
      {\usebibmacro{cite:normal}}}}

\newbibmacro*{cite:normal}{%
  \iffieldundef{shorthand}
    {\ifthenelse{\ifciteibid\AND\NOT\iffirstonpage}
       {\usebibmacro{cite:ibid}}
       {\ifthenelse{\ifciteidem\AND\NOT\boolean{cbx:noidem}%
                               \AND\NOT\iffirstonpage}
         {\usebibmacro{cite:idem}%
          \usebibmacro{cite:title}%
          \usebibmacro{cite:save}}
         {\ifnameundef{labelname}
           {}
           {\usebibmacro{cite:name}}%
            \usebibmacro{cite:title}}%
          \ifbool{cbx:omiteditor}
            {}
            {\ifnameundef{labelname}
              {\newunit
               \usebibmacro{cite:byeditor}}
              {}}%
          \usebibmacro{cite:save}}}%
    {\ifbool{cbx:shorthandibid}%
       {\ifthenelse{\ifciteibid\AND\NOT\iffirstonpage}%
         {\usebibmacro{cite:ibid}}
         {\usebibmacro{cite:shorthand}}}%
       {\usebibmacro{cite:shorthand}}}}

\newbibmacro*{cite:inreffull}{%
  \ifthenelse{\ifciteibid\AND\NOT\iffirstonpage}
       {\usebibmacro{cite:ibid}}
       {\ifthenelse{\ifciteidem\AND\NOT\boolean{cbx:noidem}%
                         \AND\NOT\iffirstonpage}
    {\usebibmacro{cite:idem}%
     \booltrue{cbx:idemfull}}
    {}%
  \printtext[bibhyperref]{\usebibmacro{cite:full}}}%
  \usebibmacro{cite:save}}

\newbibmacro*{cite:firstfull}{%
  \ifthenelse{\ifciteidem\AND\NOT\boolean{cbx:noidem}%
                         \AND\NOT\iffirstonpage}
    {\usebibmacro{cite:idem}%
     \booltrue{cbx:idemfull}}
    {}%
  \printtext[bibhyperref]{\usebibmacro{cite:full}}%
  \usebibmacro{cite:save}}

\newbibmacro*{cite:full}{%
  \usebibmacro{cite:full:citepages}%
  \usedriver
    {\DeclareNameAlias{sortname}{default}}
    {\thefield{entrytype}}%
  \iffieldundef{shorthand}
    {}
    {\ifbool{cbx:citedas}
      {\addspace\usebibmacro{shorthandintro}}
      {}}}

\newbibmacro*{cite:shorthand}{%
  \printtext[bibhyperref]{\printfield{shorthand}}%
  \global\booltrue{cbx:noidem}}

\newbibmacro*{textcite}{%
  \global\boolfalse{cbx:loccit}%
  \ifnameundef{labelname}
    {\blxdw@warning@noline{No author or editor given for \textcite}%
     \textbf{\thefield{entrykey}}}
    {\ifboolexpr{
      bool {cbx:citeauthornamefirstfull}
      or
      bool {cbx:citeauthornamefull}
    }
      {\printnames[citeauthor]{labelname}}
      {\printnames{labelname}}%
     \setunit{%
       \global\booltrue{cbx:parens}%
       \addspace\bibopenparen}%
     \usebibmacro{cite:save}}%
  \ifnumequal{\value{citecount}}{1}
    {\usebibmacro{prenote}}
    {}%
  \ifbool{cbx:firstfull}
    {\ifciteseen
      {\usebibmacro{textcite:normal}}
      {\usebibmacro{textcite:firstfull}}}%
    {\usebibmacro{textcite:normal}}}

\newbibmacro*{textcite:firstfull}{%
  \ifnameundef{labelname}
    {}
    {\ifnamesequal{labelname}{author}
      {\clearname{author}}
      {}%
     \ifnamesequal{labelname}{editor}
      {\clearname{editor}}
      {}%
     \ifnamesequal{labelname}{translator}
      {\clearname{translator}}
      {}}%
  \printtext[bibhyperref]{\usebibmacro{cite:full}}}

\newbibmacro*{textcite:normal}{%
  \iffieldundef{shorthand}
    {\ifthenelse{\ifciteibid\AND\NOT\iffirstonpage}
       {\usebibmacro{cite:ibid}}
       {\ifsingletitle
         {\usebibmacro{cite:title:force}}
         {\usebibmacro{cite:title}}}}%
    {\usebibmacro{cite:shorthand}}}

%% xref
\newbibmacro*{cite:xref}{%
  \ifbool{cbx:firstfull}
    {\ifciteseen
      {\iffieldundef{shorthand}
        {\ifnameundef{labelname}
          {}%
          {\ifbool{xrefidem}
            {\usebibmacro{cite:xref:idem}}%
            {\usebibmacro{cite:editor}
             \nametitledelim}}%
         \usebibmacro{cite:title}%
         \ifnameundef{labelname}
           {\ifboolexpr{
             bool {xrefidem}
             and
             bool {bbx:edbyidem}
           }
		         {\newunit
              \bibstring{byeditor}%
              \setunit{\addspace}%
              \bibstring[\mkidem]{idemdat\thefield{gender}}}
             {\newunit
              \usebibmacro{cite:byeditor}}}
           {}}
        {\usebibmacro{cite:shorthand}}}%
      {\ifbool{xrefidem}
        {\ifbool{bbx:edbyidem}
          {\usebibmacro{cite:fullxrefidem}}%
          {\usebibmacro{cite:fullxref}}}%
        {\usebibmacro{cite:fullxref}}}}%
    {\iffieldundef{shorthand}
      {\ifbool{xrefidem}
		     {\ifbool{bbx:edbyidem}
    		   {\usebibmacro{cite:idem}}%
	    	   {\printnames{labelname}%
  	  	    \nametitledelim}}%
		     {\usebibmacro{cite:editor}%
		      \nametitledelim}%
       \usebibmacro{cite:title}%
       \ifuseeditor
         {}
         {\ifbool{cbx:omiteditor}
           {}
           {\newunit
            \usebibmacro{cite:byeditor}}}}%
      {\usebibmacro{cite:shorthand}}}}

\AtBeginBibliography{%
  \renewbibmacro*{cite:xref}{%
    \iffieldundef{shorthand}
      {\ifbool{xref:inbook}
        {\usebibmacro{cite:author}}
        {\usebibmacro{cite:editor}}%
       \iffieldundef{shorttitle}
         {\printfield{title}}
         {\printfield{shorttitle}}%
       \ifuseeditor
         {}
         {\ifbool{cbx:omiteditor}
           {}
           {\ifnameundef{editor}
             {}
             {\ifbool{xrefidem}
	             {\ifbool{bbx:edbyidem}
		             {\newunit%
                  \bibstring{byeditor}%
                  \setunit{\addspace}%
                  \bibstring[\mkidem]{idemdat\thefield{gender}}}
                 {\newunit%
                  \usebibmacro{byeditor}}}%
               {\newunit%
                \usebibmacro{byeditor}}}}}}
      {\printtext[bibhyperref]{\printfield{shorthand}}}}}
      
\newbibmacro*{cite:fullxref}{%
  \usebibmacro{cite:full:citepages}%
  \usedriver
    {\DeclareNameAlias{sortname}{default}}
    {xref\thefield{entrytype}}%
  \iffieldundef{shorthand}
    {}
    {\ifbool{cbx:citedas}
      {\addspace\usebibmacro{shorthandintro}}
      {}}}%

\newbibmacro*{cite:fullxrefidem}{%
  \usebibmacro{cite:full:citepages}%
  \usedriver
    {\DeclareNameAlias{sortname}{default}}
    {xrefidem\thefield{entrytype}}%
  \iffieldundef{shorthand}
    {}
    {\ifbool{cbx:citedas}
      {\addspace\usebibmacro{shorthandintro}}
      {}}}

\DeclareCiteCommand{\fullcite}
  {\usebibmacro{prenote}%
   \usebibmacro{cite:full:citepages}%
   \booltrue{cbx:fullcite}}
  {\usedriver
     {\DeclareNameAlias{sortname}{default}}
     {\thefield{entrytype}}}
  {\multicitedelim}
  {\usebibmacro{cite:postnote}}

\DeclareCiteCommand{\footfullcite}[\mkbibfootnote]
  {\bibsentence
   \usebibmacro{prenote}%
   \usebibmacro{cite:full:citepages}%
   \booltrue{cbx:fullcite}}
  {\usedriver
     {\DeclareNameAlias{sortname}{default}}
     {\thefield{entrytype}}}
  {\multicitedelim}
  {\usebibmacro{cite:postnote}}

\newbibmacro*{citetitle}{%
  \global\boolfalse{cbx:loccit}%
  \iffieldundef{shorthand}
    {\ifthenelse{\ifciteibid\AND\NOT\iffirstonpage}
       {\usebibmacro{cite:ibid}}
       {\usebibmacro{cite:title:force}}}%
    {\usebibmacro{cite:shorthand}}}

\newbibmacro*{cite:title}{%
  \ifsingletitle
    {\setunit{}}% Löschen des \nametitledelim, falls kein Titel ausgegeben wird
    {\ifboolexpr{
      test {\ifentrytype{review}}
      and
      not test {\iffieldundef{xref}}
    }
      {\printtext[review]{\bbx@review{\thefield{xref}}}}
      {\printtext[bibhyperref]{%
         \printfield[citetitle]{labeltitle}}}%
     \ifbool{cbx:addyear}
        {\iffieldundef{year}
           {}
           {\titleyeardelim%
            \parentext{\printfield{year}}}}
        {}}}

\newbibmacro*{cite:title:force}{%
  \printtext[bibhyperref]{%
    \printfield[citetitle]{labeltitle}}%
  \ifbool{cbx:addyear}
    {\iffieldundef{year}
      {}
      {\titleyeardelim%
       \parentext{\printfield{year}}}}
    {}}

\newbibmacro*{cite:labelyear+extrayear}{%
  \iffieldundef{labelyear}
    {}
    {\printtext[bibhyperref]{%
       \printfield{labelyear}%
       \printfield{extrayear}}}}

\DeclareCiteCommand{\cite}
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{cite}}
  {\multicitedelim}
  {\usebibmacro{cite:postnote}}

\DeclareCiteCommand{\parencite}[\mkbibparens]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{cite}}
  {\multicitedelim}
  {\usebibmacro{cite:postnote}}

\DeclareCiteCommand{\footcite}[\mkbibfootnote]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{cite}}
  {\multicitedelim}
  {\usebibmacro{cite:postnote}}

\DeclareCiteCommand{\footcitetext}[\mkbibfootnotetext]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{cite}}
  {\multicitedelim}
  {\usebibmacro{cite:postnote}}

\DeclareCiteCommand{\textcite}
  {\boolfalse{cbx:parens}}
  {\usebibmacro{citeindex}%
   \usebibmacro{textcite}}
  {\ifbool{cbx:parens}
     {\bibcloseparen\boolfalse{cbx:parens}}
     {}%
   \multicitedelim}
  {\usebibmacro{textcite:postnote}}
  
%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%%
%%%%% Unverändert übernommen aus authortitle-ibid.cbx %%%%%
%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%%

\newbool{cbx:parens}

\newbibmacro*{cite:ibid}{%
  \printtext[bibhyperref]{\bibstring[\mkibid]{ibidem}}%
  \ifloccit
    {\global\booltrue{cbx:loccit}}
    {}}

\newbibmacro*{textcite:postnote}{%
  \ifthenelse{\iffieldundef{postnote}\OR\boolean{cbx:loccit}}
    {\ifbool{cbx:parens}
       {\bibcloseparen}
       {}}
    {\ifbool{cbx:parens}
       {\postnotedelim}
       {\addspace\bibopenparen}%
     \printfield{postnote}\bibcloseparen}}

\DeclareCiteCommand*{\cite}
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{citetitle}}
  {\multicitedelim}
  {\usebibmacro{postnote}}

\DeclareCiteCommand*{\parencite}[\mkbibparens]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{citetitle}}
  {\multicitedelim}
  {\usebibmacro{cite:postnote}}

\DeclareCiteCommand{\smartcite}[\iffootnote\mkbibparens\mkbibfootnote]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{cite}}
  {\multicitedelim}
  {\usebibmacro{cite:postnote}}

\endinput