jbe/bsw@0: --[[--
jbe@497: output =             -- document/data to be sent to the web browser
jbe@497: slot.render_layout(
jbe@497:   layout_ident       -- if set, selects layout to be used; otherwise layout set by slot.set_layout(...) is used
jbe@497: )
jbe/bsw@0: 
jbe/bsw@0: This function returns the selected layout after replacing all slot placeholders with the respective slot contents. If slot.set_layout(...) was called with nil as first argument, then no layout will be used, but only the contents of the slot named "data" are returned.
jbe/bsw@0: 
jbe/bsw@0: --]]--
jbe/bsw@0: 
jbe@497: function slot.render_layout(layout_ident)
jbe@497:   local layout_ident = layout_ident or slot._current_layout
jbe@497:   if layout_ident then
jbe/bsw@0:     local layout_file = assert(io.open(
jbe/bsw@0:       encode.file_path(
jbe@209:         WEBMCP_BASE_PATH,
jbe/bsw@0:         'app',
jbe@209:         WEBMCP_APP_NAME,
jbe/bsw@0:         '_layout',
jbe@497:         layout_ident .. '.html'
jbe/bsw@0:       ),
jbe/bsw@0:       'r'
jbe/bsw@0:     ))
jbe@282:     local layout = assert(layout_file:read("*a"))
jbe@282:     assert(layout_file:close())
jbe/bsw@0: 
jbe/bsw@0:     -- render layout
jbe/bsw@0:     layout = string.gsub(layout, "__BASEURL__/?", request.get_relative_baseurl())  -- TODO: find a better placeholder than __BASEURL__ ?
jbe/bsw@0:     layout = string.gsub(layout, '<!%-%- *WEBMCP +SLOT +([^ ]+) *%-%->', 
jbe/bsw@0:       function(slot_ident)
jbe/bsw@0:         if #slot.get_content(slot_ident) > 0 then
jbe/bsw@0:           return '<div class="slot_' .. slot_ident .. '" id="slot_' .. slot_ident .. '">' .. slot.get_content(slot_ident).. '</div>'
jbe/bsw@0:         else
jbe/bsw@0:           return ''
jbe/bsw@0:         end
jbe/bsw@0:       end
jbe/bsw@0:     )
jbe/bsw@0:     layout = string.gsub(layout, '<!%-%- *WEBMCP +SLOTNODIV +([^ ]+) *%-%->', 
jbe/bsw@0:       function(slot_ident)
jbe/bsw@0:         if #slot.get_content(slot_ident) > 0 then
jbe/bsw@0:           return slot.get_content(slot_ident)
jbe/bsw@0:         else
jbe/bsw@0:           return ''
jbe/bsw@0:         end
jbe/bsw@0:       end
jbe/bsw@0:     )
jbe/bsw@0:     return layout
jbe/bsw@0:   else
jbe/bsw@0:     return slot.get_content("data")
jbe/bsw@0:   end
jbe/bsw@0: end