;+ ;PRO: ; open_spedas_template ; ;PURPOSE: ; ; opens a spedas template ; ;Inputs: ; filename:name of the file ; ;Outputs: ; statuscode: negative value indicates failure, 0 indicates success ; statusmsg: a message to be returned in the event of an error ; template: the template object ; ; ;$LastChangedBy: egrimes $ ;$LastChangedDate: 2015-04-09 11:52:06 -0700 (Thu, 09 Apr 2015) $ ;$LastChangedRevision: 17264 $ ;$URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/tags/spedas_3_2/spedas_gui/utilities/open_spedas_template.pro $ ;- pro open_spedas_template,filename=filename,template=template,statuscode=statuscode,statusmsg=statusmsg catch,Error_status if (Error_status NE 0) then begin statusmsg = !ERROR_STATE.MSG statuscode = -3 catch,/cancel return endif file=filename spd_ui_validate_file,file=file,statusmsg=statusmsg,statuscode=statuscode if statuscode lt 0 then return widget_control, /hourglass ; Load XML document from the filename xmldoc=obj_new('IDLffXMLDOMDocument') xmldoc->Load,file=file ; Create spd_ui_document object to receive XML data, using the ; no-arguments constructor template=obj_new('spd_ui_template') ; Drill down into the DOM tree to get the first non-whitespace child ; of element body=xmldoc->GetFirstChild() ; should be 'body' if (body->GetNodeName() NE 'body') then begin message,'Expected body node, got '+body->GetNodeName() endif sib=body->GetFirstChild() ; Skip any extraneous text elements (newlines, etc) while (sib->GetNodeName() EQ '#text') do begin sib=sib->GetNextSibling() endwhile ; sib should be a SPD_UI_TEMPLATE node if (sib->GetNodeName() NE 'SPD_UI_TEMPLATE') then begin message,'Expected SPD_UI_DOCUMENT node, got '+sib->GetNodeName() endif template->BuildFromDOMElement,sib ; We're done with the XML DOM tree obj_destroy,xmldoc statuscode=0 statusmsg=STRING(file,format='("SPEDAS template successfully read from ",A)') return end