Module:Navbar: Difference between revisions

    From Nonbinary Wiki
    m>Dragons flight
    m (Changed protection level of Module:Navbar: Highly visible template or Lua module ([Edit=Block all non-admin users] (indefinite) [Move=Block all non-admin users] (indefinite)))
    m>Dragons flight
    (handle expensive parser function limit without killing the box)
    Line 17: Line 17:


         return tostring(span)
         return tostring(span)
    end
    function getTitle( pageName )
        pageName = trim( pageName );
        if mw.ustring.sub(pageName, 1, 1) == ':' then
            return mw.title.new( mw.ustring.sub(pageName, 2) );
        else
            return mw.title.new( pageName, 'Template' );
        end   
    end
    end


    Line 24: Line 33:
         end
         end
       
       
         local title;
         local good, title;
         local pageName = trim(args[1])
         good, title = pcall( getTitle, args[1] );
         if mw.ustring.sub(pageName, 1, 1) == ':' then
         if not good then
             title = mw.title.new( mw.ustring.sub(pageName, 2) );
             return error('Expensive parser function limit exceeded');
        else
         end  
            title = mw.title.new( pageName, 'Template' );
     
         end  
         if not title then
         if not title then
             return error('Page does not exist')
             return error('Page does not exist')

    Revision as of 20:07, 31 March 2013

    Documentation for this module may be created at Module:Navbar/doc

    local p = {}
    
    local HtmlBuilder = require('Module:HtmlBuilder')
    
    function trim(s)
        return mw.ustring.match( s, "^%s*(.-)%s*$" )
    end
    
    function error(s)
        local span = HtmlBuilder.create('span')
    
        span
            .addClass('error')
            .css('float', 'left')
            .css('white-space', 'nowrap')
            .wikitext('Error: ' .. s)
    
        return tostring(span)
    end
    
    function getTitle( pageName )
        pageName = trim( pageName );
        if mw.ustring.sub(pageName, 1, 1) == ':' then
            return mw.title.new( mw.ustring.sub(pageName, 2) );
        else
            return mw.title.new( pageName, 'Template' );
        end    
    end
    
    function _navbar( args )
        if not args[1] then
            return error('No name provided')
        end
     
        local good, title;
        good, title = pcall( getTitle, args[1] );
        if not good then
            return error('Expensive parser function limit exceeded');
        end    
    
        if not title then
            return error('Page does not exist')
        end
     
        local mainpage = title.fullText;
        local talkpage = title.talkPageTitle and title.talkPageTitle.fullText or ''
        local editurl = title:fullUrl( 'action=edit' ); 
     
        local viewLink, talkLink, editLink = 'view', 'talk', 'edit'
        if args.mini then
            viewLink, talkLink, editLink = 'v', 't', 'e'
        end
     
        local div = HtmlBuilder.create( 'div' )
        div
            .addClass( 'noprint' )
            .addClass( 'plainlinks' )
            .addClass( 'hlist' )
            .addClass( 'navbar')
            .cssText( args.style )
     
        if args.mini then div.addClass('mini') end
     
        if not (args.mini or args.plain) then
            div
                .tag( 'span' )
                    .css( 'word-spacing', 0 )
                    .cssText( args.fontstyle )
                    .wikitext( args.text or 'This box:' )
                    .wikitext( ' ' )
        end
     
        if args.brackets then
            div
                .tag('span')
                    .css('margin-right', '-0.125em')
                    .cssText( args.fontstyle )
                    .wikitext( '[' )
                    .newline();
        end
     
        local ul = div.tag('ul');
     
        ul
            .tag( 'li' )
                .addClass( 'nv-view' )
                .wikitext( '[[' .. mainpage .. '|' )
                .tag( 'span ' )
                    .attr( 'title', 'View this template' )
                    .cssText( args.fontstyle or '' )
                    .wikitext( viewLink )
                    .done()
                .wikitext( ']]' )
                .done()
            .tag( 'li' )
                .addClass( 'nv-talk' )
                .wikitext( '[[' .. talkpage .. '|' )
                .tag( 'span ' )
                    .attr( 'title', 'Discuss this template' )
                    .cssText( args.fontstyle or '' )
                    .wikitext( talkLink )
                    .done()
                .wikitext( ']]' );
     
        if not args.noedit then 
            ul
                .tag( 'li' )
                    .addClass( 'nv-edit' )
                    .wikitext( '[' .. editurl .. ' ' )
                    .tag( 'span ' )
                        .attr( 'title', 'Edit this template' )
                        .cssText( args.fontstyle or '' )
                        .wikitext( editLink )
                        .done()
                    .wikitext( ']' );
        end
     
        if args.brackets then
            div
                .tag('span')
                    .css('margin-left', '-0.125em')
                    .cssText( args.fontstyle or '' )
                    .wikitext( ']' )
                    .newline();
        end
     
        return tostring(div)
    end
    
    function p.navbar(frame)
        local origArgs
        -- If called via #invoke, use the args passed into the invoking template.
        -- Otherwise, for testing purposes, assume args are being passed directly in.
        if frame == mw.getCurrentFrame() then
            origArgs = frame:getParent().args
        else
            origArgs = frame
        end
     
        -- ParserFunctions considers the empty string to be false, so to preserve the previous 
        -- behavior of {{navbar}}, change any empty arguments to nil, so Lua will consider
        -- them false too.
        args = {}
        for k, v in pairs(origArgs) do
            if v ~= '' then
                args[k] = v
            end
        end
     
        return _navbar(args)
    end
     
    return p