1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.255 2005/03/10 00:21:48 matthew Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: # Makes a table out of the previous attempts
30: # Inputs result_from_symbread, user, domain, course_id
31: # Reads in non-network-related .tab files
32:
33: # POD header:
34:
35: =pod
36:
37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
45:
46: =head1 OVERVIEW
47:
48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
55: package Apache::loncommon;
56:
57: use strict;
58: use Apache::lonnet();
59: use GDBM_File;
60: use POSIX qw(strftime mktime);
61: use Apache::Constants qw(:common :http :methods);
62: use Apache::lonmenu();
63: use Apache::lonlocal;
64: use HTML::Entities;
65:
66: my $readit;
67:
68: ##
69: ## Global Variables
70: ##
71:
72: # ----------------------------------------------- Filetypes/Languages/Copyright
73: my %language;
74: my %supported_language;
75: my %cprtag;
76: my %scprtag;
77: my %fe; my %fd;
78: my %category_extensions;
79:
80: # ---------------------------------------------- Designs
81:
82: my %designhash;
83:
84: # ---------------------------------------------- Thesaurus variables
85: #
86: # %Keywords:
87: # A hash used by &keyword to determine if a word is considered a keyword.
88: # $thesaurus_db_file
89: # Scalar containing the full path to the thesaurus database.
90:
91: my %Keywords;
92: my $thesaurus_db_file;
93:
94: #
95: # Initialize values from language.tab, copyright.tab, filetypes.tab,
96: # thesaurus.tab, and filecategories.tab.
97: #
98: BEGIN {
99: # Variable initialization
100: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
101: #
102: unless ($readit) {
103: # ------------------------------------------------------------------- languages
104: {
105: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
106: '/language.tab';
107: if ( open(my $fh,"<$langtabfile") ) {
108: while (<$fh>) {
109: next if /^\#/;
110: chomp;
111: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
112: $language{$key}=$val.' - '.$enc;
113: if ($sup) {
114: $supported_language{$key}=$sup;
115: }
116: }
117: close($fh);
118: }
119: }
120: # ------------------------------------------------------------------ copyrights
121: {
122: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
123: '/copyright.tab';
124: if ( open (my $fh,"<$copyrightfile") ) {
125: while (<$fh>) {
126: next if /^\#/;
127: chomp;
128: my ($key,$val)=(split(/\s+/,$_,2));
129: $cprtag{$key}=$val;
130: }
131: close($fh);
132: }
133: }
134: # ------------------------------------------------------------------ source copyrights
135: {
136: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
137: '/source_copyright.tab';
138: if ( open (my $fh,"<$sourcecopyrightfile") ) {
139: while (<$fh>) {
140: next if /^\#/;
141: chomp;
142: my ($key,$val)=(split(/\s+/,$_,2));
143: $scprtag{$key}=$val;
144: }
145: close($fh);
146: }
147: }
148:
149: # -------------------------------------------------------------- domain designs
150:
151: my $filename;
152: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
153: opendir(DIR,$designdir);
154: while ($filename=readdir(DIR)) {
155: my ($domain)=($filename=~/^(\w+)\./);
156: {
157: my $designfile = $designdir.'/'.$filename;
158: if ( open (my $fh,"<$designfile") ) {
159: while (<$fh>) {
160: next if /^\#/;
161: chomp;
162: my ($key,$val)=(split(/\=/,$_));
163: if ($val) { $designhash{$domain.'.'.$key}=$val; }
164: }
165: close($fh);
166: }
167: }
168:
169: }
170: closedir(DIR);
171:
172:
173: # ------------------------------------------------------------- file categories
174: {
175: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
176: '/filecategories.tab';
177: if ( open (my $fh,"<$categoryfile") ) {
178: while (<$fh>) {
179: next if /^\#/;
180: chomp;
181: my ($extension,$category)=(split(/\s+/,$_,2));
182: push @{$category_extensions{lc($category)}},$extension;
183: }
184: close($fh);
185: }
186:
187: }
188: # ------------------------------------------------------------------ file types
189: {
190: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
191: '/filetypes.tab';
192: if ( open (my $fh,"<$typesfile") ) {
193: while (<$fh>) {
194: next if (/^\#/);
195: chomp;
196: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
197: if ($descr ne '') {
198: $fe{$ending}=lc($emb);
199: $fd{$ending}=$descr;
200: }
201: }
202: close($fh);
203: }
204: }
205: &Apache::lonnet::logthis(
206: "<font color=yellow>INFO: Read file types</font>");
207: $readit=1;
208: } # end of unless($readit)
209:
210: }
211:
212: ###############################################################
213: ## HTML and Javascript Helper Functions ##
214: ###############################################################
215:
216: =pod
217:
218: =head1 HTML and Javascript Functions
219:
220: =over 4
221:
222: =item * browser_and_searcher_javascript ()
223:
224: X<browsing, javascript>X<searching, javascript>Returns a string
225: containing javascript with two functions, C<openbrowser> and
226: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
227: tags.
228:
229: =item * openbrowser(formname,elementname,only,omit) [javascript]
230:
231: inputs: formname, elementname, only, omit
232:
233: formname and elementname indicate the name of the html form and name of
234: the element that the results of the browsing selection are to be placed in.
235:
236: Specifying 'only' will restrict the browser to displaying only files
237: with the given extension. Can be a comma separated list.
238:
239: Specifying 'omit' will restrict the browser to NOT displaying files
240: with the given extension. Can be a comma separated list.
241:
242: =item * opensearcher(formname, elementname) [javascript]
243:
244: Inputs: formname, elementname
245:
246: formname and elementname specify the name of the html form and the name
247: of the element the selection from the search results will be placed in.
248:
249: =cut
250:
251: sub browser_and_searcher_javascript {
252: my ($mode)=@_;
253: if (!defined($mode)) { $mode='edit'; }
254: my $resurl=&lastresurl();
255: return <<END;
256: // <!-- BEGIN LON-CAPA Internal
257: var editbrowser = null;
258: function openbrowser(formname,elementname,only,omit,titleelement) {
259: var url = '$resurl/?';
260: if (editbrowser == null) {
261: url += 'launch=1&';
262: }
263: url += 'catalogmode=interactive&';
264: url += 'mode=$mode&';
265: url += 'form=' + formname + '&';
266: if (only != null) {
267: url += 'only=' + only + '&';
268: } else {
269: url += 'only=&';
270: }
271: if (omit != null) {
272: url += 'omit=' + omit + '&';
273: } else {
274: url += 'omit=&';
275: }
276: if (titleelement != null) {
277: url += 'titleelement=' + titleelement + '&';
278: } else {
279: url += 'titleelement=&';
280: }
281: url += 'element=' + elementname + '';
282: var title = 'Browser';
283: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
284: options += ',width=700,height=600';
285: editbrowser = open(url,title,options,'1');
286: editbrowser.focus();
287: }
288: var editsearcher;
289: function opensearcher(formname,elementname,titleelement) {
290: var url = '/adm/searchcat?';
291: if (editsearcher == null) {
292: url += 'launch=1&';
293: }
294: url += 'catalogmode=interactive&';
295: url += 'mode=$mode&';
296: url += 'form=' + formname + '&';
297: if (titleelement != null) {
298: url += 'titleelement=' + titleelement + '&';
299: } else {
300: url += 'titleelement=&';
301: }
302: url += 'element=' + elementname + '';
303: var title = 'Search';
304: var options = 'scrollbars=1,resizable=1,menubar=0';
305: options += ',width=700,height=600';
306: editsearcher = open(url,title,options,'1');
307: editsearcher.focus();
308: }
309: // END LON-CAPA Internal -->
310: END
311: }
312:
313: sub lastresurl {
314: if ($ENV{'environment.lastresurl'}) {
315: return $ENV{'environment.lastresurl'}
316: } else {
317: return '/res';
318: }
319: }
320:
321: sub storeresurl {
322: my $resurl=&Apache::lonnet::clutter(shift);
323: unless ($resurl=~/^\/res/) { return 0; }
324: $resurl=~s/\/$//;
325: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
326: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
327: return 1;
328: }
329:
330: sub studentbrowser_javascript {
331: unless (
332: (($ENV{'request.course.id'}) &&
333: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
334: || ($ENV{'request.role'}=~/^(au|dc|su)/)
335: ) { return ''; }
336: return (<<'ENDSTDBRW');
337: <script type="text/javascript" language="Javascript" >
338: var stdeditbrowser;
339: function openstdbrowser(formname,uname,udom,roleflag) {
340: var url = '/adm/pickstudent?';
341: var filter;
342: eval('filter=document.'+formname+'.'+uname+'.value;');
343: if (filter != null) {
344: if (filter != '') {
345: url += 'filter='+filter+'&';
346: }
347: }
348: url += 'form=' + formname + '&unameelement='+uname+
349: '&udomelement='+udom;
350: if (roleflag) { url+="&roles=1"; }
351: var title = 'Student_Browser';
352: var options = 'scrollbars=1,resizable=1,menubar=0';
353: options += ',width=700,height=600';
354: stdeditbrowser = open(url,title,options,'1');
355: stdeditbrowser.focus();
356: }
357: </script>
358: ENDSTDBRW
359: }
360:
361: sub selectstudent_link {
362: my ($form,$unameele,$udomele)=@_;
363: if ($ENV{'request.course.id'}) {
364: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
365: return '';
366: }
367: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
368: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
369: }
370: if ($ENV{'request.role'}=~/^(au|dc|su)/) {
371: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
372: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
373: }
374: return '';
375: }
376:
377: sub coursebrowser_javascript {
378: my ($domainfilter)=@_;
379: return (<<ENDSTDBRW);
380: <script type="text/javascript" language="Javascript" >
381: var stdeditbrowser;
382: function opencrsbrowser(formname,uname,udom,desc,extra_element) {
383: var url = '/adm/pickcourse?';
384: var filter;
385: if (filter != null) {
386: if (filter != '') {
387: url += 'filter='+filter+'&';
388: }
389: }
390: var domainfilter='$domainfilter';
391: if (domainfilter != null) {
392: if (domainfilter != '') {
393: url += 'domainfilter='+domainfilter+'&';
394: }
395: }
396: url += 'form=' + formname + '&cnumelement='+uname+
397: '&cdomelement='+udom+
398: '&cnameelement='+desc;
399: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
400: url += '&roleelement='+extra_element;
401: if (domainfilter == null || domainfilter == '') {
402: url += '&domainfilter='+extra_element;
403: }
404: }
405: var title = 'Course_Browser';
406: var options = 'scrollbars=1,resizable=1,menubar=0';
407: options += ',width=700,height=600';
408: stdeditbrowser = open(url,title,options,'1');
409: stdeditbrowser.focus();
410: }
411: </script>
412: ENDSTDBRW
413: }
414:
415: sub selectcourse_link {
416: my ($form,$unameele,$udomele,$desc,$extra_element)=@_;
417: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
418: '","'.$udomele.'","'.$desc.'","'.$extra_element.'");'."'>".&mt('Select Course')."</a>";
419: }
420:
421: =pod
422:
423: =item * linked_select_forms(...)
424:
425: linked_select_forms returns a string containing a <script></script> block
426: and html for two <select> menus. The select menus will be linked in that
427: changing the value of the first menu will result in new values being placed
428: in the second menu. The values in the select menu will appear in alphabetical
429: order.
430:
431: linked_select_forms takes the following ordered inputs:
432:
433: =over 4
434:
435: =item * $formname, the name of the <form> tag
436:
437: =item * $middletext, the text which appears between the <select> tags
438:
439: =item * $firstdefault, the default value for the first menu
440:
441: =item * $firstselectname, the name of the first <select> tag
442:
443: =item * $secondselectname, the name of the second <select> tag
444:
445: =item * $hashref, a reference to a hash containing the data for the menus.
446:
447: =back
448:
449: Below is an example of such a hash. Only the 'text', 'default', and
450: 'select2' keys must appear as stated. keys(%menu) are the possible
451: values for the first select menu. The text that coincides with the
452: first menu value is given in $menu{$choice1}->{'text'}. The values
453: and text for the second menu are given in the hash pointed to by
454: $menu{$choice1}->{'select2'}.
455:
456: my %menu = ( A1 => { text =>"Choice A1" ,
457: default => "B3",
458: select2 => {
459: B1 => "Choice B1",
460: B2 => "Choice B2",
461: B3 => "Choice B3",
462: B4 => "Choice B4"
463: }
464: },
465: A2 => { text =>"Choice A2" ,
466: default => "C2",
467: select2 => {
468: C1 => "Choice C1",
469: C2 => "Choice C2",
470: C3 => "Choice C3"
471: }
472: },
473: A3 => { text =>"Choice A3" ,
474: default => "D6",
475: select2 => {
476: D1 => "Choice D1",
477: D2 => "Choice D2",
478: D3 => "Choice D3",
479: D4 => "Choice D4",
480: D5 => "Choice D5",
481: D6 => "Choice D6",
482: D7 => "Choice D7"
483: }
484: }
485: );
486:
487: =cut
488:
489: sub linked_select_forms {
490: my ($formname,
491: $middletext,
492: $firstdefault,
493: $firstselectname,
494: $secondselectname,
495: $hashref
496: ) = @_;
497: my $second = "document.$formname.$secondselectname";
498: my $first = "document.$formname.$firstselectname";
499: # output the javascript to do the changing
500: my $result = '';
501: $result.="<script type=\"text/javascript\">\n";
502: $result.="var select2data = new Object();\n";
503: $" = '","';
504: my $debug = '';
505: foreach my $s1 (sort(keys(%$hashref))) {
506: $result.="select2data.d_$s1 = new Object();\n";
507: $result.="select2data.d_$s1.def = new String('".
508: $hashref->{$s1}->{'default'}."');\n";
509: $result.="select2data.d_$s1.values = new Array(";
510: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
511: $result.="\"@s2values\");\n";
512: $result.="select2data.d_$s1.texts = new Array(";
513: my @s2texts;
514: foreach my $value (@s2values) {
515: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
516: }
517: $result.="\"@s2texts\");\n";
518: }
519: $"=' ';
520: $result.= <<"END";
521:
522: function select1_changed() {
523: // Determine new choice
524: var newvalue = "d_" + $first.value;
525: // update select2
526: var values = select2data[newvalue].values;
527: var texts = select2data[newvalue].texts;
528: var select2def = select2data[newvalue].def;
529: var i;
530: // out with the old
531: for (i = 0; i < $second.options.length; i++) {
532: $second.options[i] = null;
533: }
534: // in with the nuclear
535: for (i=0;i<values.length; i++) {
536: $second.options[i] = new Option(values[i]);
537: $second.options[i].value = values[i];
538: $second.options[i].text = texts[i];
539: if (values[i] == select2def) {
540: $second.options[i].selected = true;
541: }
542: }
543: }
544: </script>
545: END
546: # output the initial values for the selection lists
547: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
548: foreach my $value (sort(keys(%$hashref))) {
549: $result.=" <option value=\"$value\" ";
550: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
551: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
552: }
553: $result .= "</select>\n";
554: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
555: $result .= $middletext;
556: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
557: my $seconddefault = $hashref->{$firstdefault}->{'default'};
558: foreach my $value (sort(keys(%select2))) {
559: $result.=" <option value=\"$value\" ";
560: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
561: $result.=">".&mt($select2{$value})."</option>\n";
562: }
563: $result .= "</select>\n";
564: # return $debug;
565: return $result;
566: } # end of sub linked_select_forms {
567:
568: =pod
569:
570: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
571:
572: Returns a string corresponding to an HTML link to the given help
573: $topic, where $topic corresponds to the name of a .tex file in
574: /home/httpd/html/adm/help/tex, with underscores replaced by
575: spaces.
576:
577: $text will optionally be linked to the same topic, allowing you to
578: link text in addition to the graphic. If you do not want to link
579: text, but wish to specify one of the later parameters, pass an
580: empty string.
581:
582: $stayOnPage is a value that will be interpreted as a boolean. If true,
583: the link will not open a new window. If false, the link will open
584: a new window using Javascript. (Default is false.)
585:
586: $width and $height are optional numerical parameters that will
587: override the width and height of the popped up window, which may
588: be useful for certain help topics with big pictures included.
589:
590: =cut
591:
592: sub help_open_topic {
593: my ($topic, $text, $stayOnPage, $width, $height) = @_;
594: $text = "" if (not defined $text);
595: $stayOnPage = 0 if (not defined $stayOnPage);
596: if ($ENV{'browser.interface'} eq 'textual' ||
597: $ENV{'environment.remote'} eq 'off' ) {
598: $stayOnPage=1;
599: }
600: $width = 350 if (not defined $width);
601: $height = 400 if (not defined $height);
602: my $filename = $topic;
603: $filename =~ s/ /_/g;
604:
605: my $template = "";
606: my $link;
607:
608: $topic=~s/\W/\_/g;
609:
610: if (!$stayOnPage)
611: {
612: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
613: }
614: else
615: {
616: $link = "/adm/help/${filename}.hlp";
617: }
618:
619: # Add the text
620: if ($text ne "")
621: {
622: $template .=
623: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
624: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
625: }
626:
627: # Add the graphic
628: my $title = &mt('Online Help');
629: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
630: $template .= <<"ENDTEMPLATE";
631: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
632: ENDTEMPLATE
633: if ($text ne '') { $template.='</td></tr></table>' };
634: return $template;
635:
636: }
637:
638: # This is a quicky function for Latex cheatsheet editing, since it
639: # appears in at least four places
640: sub helpLatexCheatsheet {
641: my $other = shift;
642: my $addOther = '';
643: if ($other) {
644: $addOther = Apache::loncommon::help_open_topic($other, shift,
645: undef, undef, 600) .
646: '</td><td>';
647: }
648: return '<table><tr><td>'.
649: $addOther .
650: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
651: undef,undef,600)
652: .'</td><td>'.
653: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
654: undef,undef,600)
655: .'</td></tr></table>';
656: }
657:
658: sub help_open_menu {
659: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
660: $text = "" if (not defined $text);
661: $stayOnPage = 0 if (not defined $stayOnPage);
662: if ($ENV{'browser.interface'} eq 'textual' ||
663: $ENV{'environment.remote'} eq 'off' ) {
664: $stayOnPage=1;
665: }
666: $width = 620 if (not defined $width);
667: $height = 600 if (not defined $height);
668: my $link='';
669: my $title = &mt('Get help');
670: my $origurl = $ENV{'REQUEST_URI'};
671: $origurl=~s|^/~|/priv/|;
672: my $timestamp = time;
673: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
674: $$_ = &Apache::lonnet::escape($$_);
675: }
676:
677: if (!$stayOnPage) {
678: $link = "javascript:helpMenu('open')";
679: } else {
680: $link = "javascript:helpMenu('display')";
681: }
682: my $banner_link = "/adm/helpmenu?page=banner&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp&stayonpage=$stayOnPage";
683: my $details_link = "/adm/helpmenu?page=body&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp";
684: my $template;
685: if ($text ne "") {
686: $template .=
687: "<table bgcolor='#773311' cellspacing='1' cellpadding='1' border='0'><tr>".
688: "<td bgcolor='#886622'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
689: }
690: my $html=&Apache::lonxml::xmlbegin();
691: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
692: $template .= <<"ENDTEMPLATE";
693: <script type="text/javascript">
694: // <!-- BEGIN LON-CAPA Internal
695: // <![CDATA[
696: function helpMenu(target) {
697: var caller = this;
698: if (target == 'open') {
699: var newWindow = null;
700: try {
701: newWindow = window.open("/adm/rat/empty.html","helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
702: }
703: catch(error) {
704: writeHelp(caller);
705: return;
706: }
707: if (newWindow) {
708: caller = newWindow;
709: }
710: }
711: writeHelp(caller);
712: return;
713: }
714: function writeHelp(caller) {
715: caller.document.write('$html<head><title>LON-CAPA Help Menu</title><meta http-equiv="pragma" content="no-cache"></head>')
716: caller.document.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
717: caller.document.write("</html>")
718: caller.document.close()
719: caller.focus()
720: }
721: // ]]>
722: // END LON-CAPA Internal -->
723: </script>
724: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
725: ENDTEMPLATE
726: if ($component_help) {
727: if (!$text) {
728: $template=&help_open_topic($component_help,undef,$stayOnPage,
729: $width,$height).' '.$template;
730: } else {
731: my $help_text;
732: $help_text=&Apache::lonnet::unescape($topic);
733: $template='<table><tr><td>'.
734: &help_open_topic($component_help,$help_text,$stayOnPage,
735: $width,$height).'</td><td>'.$template.
736: '</td></tr></table>';
737: }
738: }
739: if ($text ne '') { $template.='</td></tr></table>' };
740: return $template;
741: }
742:
743: sub help_open_bug {
744: my ($topic, $text, $stayOnPage, $width, $height) = @_;
745: unless ($ENV{'user.adv'}) { return ''; }
746: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
747: $text = "" if (not defined $text);
748: $stayOnPage = 0 if (not defined $stayOnPage);
749: if ($ENV{'browser.interface'} eq 'textual' ||
750: $ENV{'environment.remote'} eq 'off' ) {
751: $stayOnPage=1;
752: }
753: $width = 600 if (not defined $width);
754: $height = 600 if (not defined $height);
755:
756: $topic=~s/\W+/\+/g;
757: my $link='';
758: my $template='';
759: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
760: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
761: if (!$stayOnPage)
762: {
763: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
764: }
765: else
766: {
767: $link = $url;
768: }
769: # Add the text
770: if ($text ne "")
771: {
772: $template .=
773: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
774: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
775: }
776:
777: # Add the graphic
778: my $title = &mt('Report a Bug');
779: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
780: $template .= <<"ENDTEMPLATE";
781: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
782: ENDTEMPLATE
783: if ($text ne '') { $template.='</td></tr></table>' };
784: return $template;
785:
786: }
787:
788: sub help_open_faq {
789: my ($topic, $text, $stayOnPage, $width, $height) = @_;
790: unless ($ENV{'user.adv'}) { return ''; }
791: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
792: $text = "" if (not defined $text);
793: $stayOnPage = 0 if (not defined $stayOnPage);
794: if ($ENV{'browser.interface'} eq 'textual' ||
795: $ENV{'environment.remote'} eq 'off' ) {
796: $stayOnPage=1;
797: }
798: $width = 350 if (not defined $width);
799: $height = 400 if (not defined $height);
800:
801: $topic=~s/\W+/\+/g;
802: my $link='';
803: my $template='';
804: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
805: if (!$stayOnPage)
806: {
807: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
808: }
809: else
810: {
811: $link = $url;
812: }
813:
814: # Add the text
815: if ($text ne "")
816: {
817: $template .=
818: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
819: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
820: }
821:
822: # Add the graphic
823: my $title = &mt('View the FAQ');
824: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
825: $template .= <<"ENDTEMPLATE";
826: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
827: ENDTEMPLATE
828: if ($text ne '') { $template.='</td></tr></table>' };
829: return $template;
830:
831: }
832:
833: ###############################################################
834: ###############################################################
835:
836: =pod
837:
838: =item * csv_translate($text)
839:
840: Translate $text to allow it to be output as a 'comma separated values'
841: format.
842:
843: =cut
844:
845: ###############################################################
846: ###############################################################
847: sub csv_translate {
848: my $text = shift;
849: $text =~ s/\"/\"\"/g;
850: $text =~ s/\n/ /g;
851: return $text;
852: }
853:
854:
855: ###############################################################
856: ###############################################################
857:
858: =pod
859:
860: =item * define_excel_formats
861:
862: Define some commonly used Excel cell formats.
863:
864: Currently supported formats:
865:
866: =over 4
867:
868: =item header
869:
870: =item bold
871:
872: =item h1
873:
874: =item h2
875:
876: =item h3
877:
878: =item date
879:
880: =back
881:
882: Inputs: $workbook
883:
884: Returns: $format, a hash reference.
885:
886: =cut
887:
888: ###############################################################
889: ###############################################################
890: sub define_excel_formats {
891: my ($workbook) = @_;
892: my $format;
893: $format->{'header'} = $workbook->add_format(bold => 1,
894: bottom => 1,
895: align => 'center');
896: $format->{'bold'} = $workbook->add_format(bold=>1);
897: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
898: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
899: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
900: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
901: $format->{'i'} = $workbook->add_format(italic=>1);
902: $format->{'date'} = $workbook->add_format(num_format=>
903: 'mm/dd/yyyy hh:mm:ss');
904: return $format;
905: }
906:
907: ###############################################################
908: ###############################################################
909:
910: =pod
911:
912: =item &create_workbook
913:
914: Create an Excel worksheet. If it fails, output message on the
915: request object and return undefs.
916:
917: Inputs: Apache request object
918:
919: Returns (undef) on failure,
920: Excel worksheet object, scalar with filename, and formats
921: from &Apache::loncommon::define_excel_formats on success
922:
923: =cut
924:
925: ###############################################################
926: ###############################################################
927: sub create_workbook {
928: my ($r) = @_;
929: #
930: # Create the excel spreadsheet
931: my $filename = '/prtspool/'.
932: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
933: time.'_'.rand(1000000000).'.xls';
934: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
935: if (! defined($workbook)) {
936: $r->log_error("Error creating excel spreadsheet $filename: $!");
937: $r->print('<p>'.&mt("Unable to create new Excel file. ".
938: "This error has been logged. ".
939: "Please alert your LON-CAPA administrator").
940: '</p>');
941: return (undef);
942: }
943: #
944: $workbook->set_tempdir('/home/httpd/perl/tmp');
945: #
946: my $format = &Apache::loncommon::define_excel_formats($workbook);
947: return ($workbook,$filename,$format);
948: }
949:
950: ###############################################################
951: ###############################################################
952:
953: =pod
954:
955: =item * change_content_javascript():
956:
957: This and the next function allow you to create small sections of an
958: otherwise static HTML page that you can update on the fly with
959: Javascript, even in Netscape 4.
960:
961: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
962: must be written to the HTML page once. It will prove the Javascript
963: function "change(name, content)". Calling the change function with the
964: name of the section
965: you want to update, matching the name passed to C<changable_area>, and
966: the new content you want to put in there, will put the content into
967: that area.
968:
969: B<Note>: Netscape 4 only reserves enough space for the changable area
970: to contain room for the original contents. You need to "make space"
971: for whatever changes you wish to make, and be B<sure> to check your
972: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
973: it's adequate for updating a one-line status display, but little more.
974: This script will set the space to 100% width, so you only need to
975: worry about height in Netscape 4.
976:
977: Modern browsers are much less limiting, and if you can commit to the
978: user not using Netscape 4, this feature may be used freely with
979: pretty much any HTML.
980:
981: =cut
982:
983: sub change_content_javascript {
984: # If we're on Netscape 4, we need to use Layer-based code
985: if ($ENV{'browser.type'} eq 'netscape' &&
986: $ENV{'browser.version'} =~ /^4\./) {
987: return (<<NETSCAPE4);
988: function change(name, content) {
989: doc = document.layers[name+"___escape"].layers[0].document;
990: doc.open();
991: doc.write(content);
992: doc.close();
993: }
994: NETSCAPE4
995: } else {
996: # Otherwise, we need to use semi-standards-compliant code
997: # (technically, "innerHTML" isn't standard but the equivalent
998: # is really scary, and every useful browser supports it
999: return (<<DOMBASED);
1000: function change(name, content) {
1001: element = document.getElementById(name);
1002: element.innerHTML = content;
1003: }
1004: DOMBASED
1005: }
1006: }
1007:
1008: =pod
1009:
1010: =item * changable_area($name, $origContent):
1011:
1012: This provides a "changable area" that can be modified on the fly via
1013: the Javascript code provided in C<change_content_javascript>. $name is
1014: the name you will use to reference the area later; do not repeat the
1015: same name on a given HTML page more then once. $origContent is what
1016: the area will originally contain, which can be left blank.
1017:
1018: =cut
1019:
1020: sub changable_area {
1021: my ($name, $origContent) = @_;
1022:
1023: if ($ENV{'browser.type'} eq 'netscape' &&
1024: $ENV{'browser.version'} =~ /^4\./) {
1025: # If this is netscape 4, we need to use the Layer tag
1026: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
1027: } else {
1028: return "<span id='$name'>$origContent</span>";
1029: }
1030: }
1031:
1032: =pod
1033:
1034: =back
1035:
1036: =cut
1037:
1038: ###############################################################
1039: ## Home server <option> list generating code ##
1040: ###############################################################
1041:
1042: =pod
1043:
1044: =head1 Home Server option list generating code
1045:
1046: =over 4
1047:
1048: =item * get_domains()
1049:
1050: Returns an array containing each of the domains listed in the hosts.tab
1051: file.
1052:
1053: =cut
1054:
1055: #-------------------------------------------
1056: sub get_domains {
1057: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1058: my @domains;
1059: my %seen;
1060: foreach (sort values(%Apache::lonnet::hostdom)) {
1061: push (@domains,$_) unless $seen{$_}++;
1062: }
1063: return @domains;
1064: }
1065:
1066: # ------------------------------------------
1067:
1068: sub domain_select {
1069: my ($name,$value,$multiple)=@_;
1070: my %domains=map {
1071: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1072: } &get_domains;
1073: if ($multiple) {
1074: $domains{''}=&mt('Any domain');
1075: return &multiple_select_form($name,$value,4,%domains);
1076: } else {
1077: return &select_form($name,$value,%domains);
1078: }
1079: }
1080:
1081: sub multiple_select_form {
1082: my ($name,$value,$size,%hash)=@_;
1083: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1084: my $output='';
1085: if (! defined($size)) {
1086: $size = 4;
1087: if (scalar(keys(%hash))<4) {
1088: $size = scalar(keys(%hash));
1089: }
1090: }
1091: $output.="\n<select name='$name' size='$size' multiple='1'>";
1092: foreach (sort(keys(%hash))) {
1093: $output.='<option value="'.$_.'" ';
1094: $output.='selected="selected" ' if ($selected{$_});
1095: $output.='>'.$hash{$_}."</option>\n";
1096: }
1097: $output.="</select>\n";
1098: return $output;
1099: }
1100:
1101: #-------------------------------------------
1102:
1103: =pod
1104:
1105: =item * select_form($defdom,$name,%hash)
1106:
1107: Returns a string containing a <select name='$name' size='1'> form to
1108: allow a user to select options from a hash option_name => displayed text.
1109: See lonrights.pm for an example invocation and use.
1110:
1111: =cut
1112:
1113: #-------------------------------------------
1114: sub select_form {
1115: my ($def,$name,%hash) = @_;
1116: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1117: my @keys;
1118: if (exists($hash{'select_form_order'})) {
1119: @keys=@{$hash{'select_form_order'}};
1120: } else {
1121: @keys=sort(keys(%hash));
1122: }
1123: foreach (@keys) {
1124: $selectform.="<option value=\"$_\" ".
1125: ($_ eq $def ? 'selected="selected" ' : '').
1126: ">".&mt($hash{$_})."</option>\n";
1127: }
1128: $selectform.="</select>";
1129: return $selectform;
1130: }
1131:
1132: sub gradeleveldescription {
1133: my $gradelevel=shift;
1134: my %gradelevels=(0 => 'Not specified',
1135: 1 => 'Grade 1',
1136: 2 => 'Grade 2',
1137: 3 => 'Grade 3',
1138: 4 => 'Grade 4',
1139: 5 => 'Grade 5',
1140: 6 => 'Grade 6',
1141: 7 => 'Grade 7',
1142: 8 => 'Grade 8',
1143: 9 => 'Grade 9',
1144: 10 => 'Grade 10',
1145: 11 => 'Grade 11',
1146: 12 => 'Grade 12',
1147: 13 => 'Grade 13',
1148: 14 => '100 Level',
1149: 15 => '200 Level',
1150: 16 => '300 Level',
1151: 17 => '400 Level',
1152: 18 => 'Graduate Level');
1153: return &mt($gradelevels{$gradelevel});
1154: }
1155:
1156: sub select_level_form {
1157: my ($deflevel,$name)=@_;
1158: unless ($deflevel) { $deflevel=0; }
1159: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1160: for (my $i=0; $i<=18; $i++) {
1161: $selectform.="<option value=\"$i\" ".
1162: ($i==$deflevel ? 'selected="selected" ' : '').
1163: ">".&gradeleveldescription($i)."</option>\n";
1164: }
1165: $selectform.="</select>";
1166: return $selectform;
1167: }
1168:
1169: #-------------------------------------------
1170:
1171: =pod
1172:
1173: =item * select_dom_form($defdom,$name,$includeempty)
1174:
1175: Returns a string containing a <select name='$name' size='1'> form to
1176: allow a user to select the domain to preform an operation in.
1177: See loncreateuser.pm for an example invocation and use.
1178:
1179: If the $includeempty flag is set, it also includes an empty choice ("no domain
1180: selected");
1181:
1182: =cut
1183:
1184: #-------------------------------------------
1185: sub select_dom_form {
1186: my ($defdom,$name,$includeempty) = @_;
1187: my @domains = get_domains();
1188: if ($includeempty) { @domains=('',@domains); }
1189: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1190: foreach (@domains) {
1191: $selectdomain.="<option value=\"$_\" ".
1192: ($_ eq $defdom ? 'selected="selected" ' : '').
1193: ">$_</option>\n";
1194: }
1195: $selectdomain.="</select>";
1196: return $selectdomain;
1197: }
1198:
1199: #-------------------------------------------
1200:
1201: =pod
1202:
1203: =item * get_library_servers($domain)
1204:
1205: Returns a hash which contains keys like '103l3' and values like
1206: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1207: given $domain.
1208:
1209: =cut
1210:
1211: #-------------------------------------------
1212: sub get_library_servers {
1213: my $domain = shift;
1214: my %library_servers;
1215: foreach (keys(%Apache::lonnet::libserv)) {
1216: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1217: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1218: }
1219: }
1220: return %library_servers;
1221: }
1222:
1223: #-------------------------------------------
1224:
1225: =pod
1226:
1227: =item * home_server_option_list($domain)
1228:
1229: returns a string which contains an <option> list to be used in a
1230: <select> form input. See loncreateuser.pm for an example.
1231:
1232: =cut
1233:
1234: #-------------------------------------------
1235: sub home_server_option_list {
1236: my $domain = shift;
1237: my %servers = &get_library_servers($domain);
1238: my $result = '';
1239: foreach (sort keys(%servers)) {
1240: $result.=
1241: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1242: }
1243: return $result;
1244: }
1245:
1246: =pod
1247:
1248: =back
1249:
1250: =cut
1251:
1252: ###############################################################
1253: ## Decoding User Agent ##
1254: ###############################################################
1255:
1256: =pod
1257:
1258: =head1 Decoding the User Agent
1259:
1260: =over 4
1261:
1262: =item * &decode_user_agent()
1263:
1264: Inputs: $r
1265:
1266: Outputs:
1267:
1268: =over 4
1269:
1270: =item * $httpbrowser
1271:
1272: =item * $clientbrowser
1273:
1274: =item * $clientversion
1275:
1276: =item * $clientmathml
1277:
1278: =item * $clientunicode
1279:
1280: =item * $clientos
1281:
1282: =back
1283:
1284: =back
1285:
1286: =cut
1287:
1288: ###############################################################
1289: ###############################################################
1290: sub decode_user_agent {
1291: my ($r)=@_;
1292: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1293: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1294: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1295: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1296: my $clientbrowser='unknown';
1297: my $clientversion='0';
1298: my $clientmathml='';
1299: my $clientunicode='0';
1300: for (my $i=0;$i<=$#browsertype;$i++) {
1301: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1302: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1303: $clientbrowser=$bname;
1304: $httpbrowser=~/$vreg/i;
1305: $clientversion=$1;
1306: $clientmathml=($clientversion>=$minv);
1307: $clientunicode=($clientversion>=$univ);
1308: }
1309: }
1310: my $clientos='unknown';
1311: if (($httpbrowser=~/linux/i) ||
1312: ($httpbrowser=~/unix/i) ||
1313: ($httpbrowser=~/ux/i) ||
1314: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1315: if (($httpbrowser=~/vax/i) ||
1316: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1317: if ($httpbrowser=~/next/i) { $clientos='next'; }
1318: if (($httpbrowser=~/mac/i) ||
1319: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1320: if ($httpbrowser=~/win/i) { $clientos='win'; }
1321: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1322: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1323: $clientunicode,$clientos,);
1324: }
1325:
1326: ###############################################################
1327: ## Authentication changing form generation subroutines ##
1328: ###############################################################
1329: ##
1330: ## All of the authform_xxxxxxx subroutines take their inputs in a
1331: ## hash, and have reasonable default values.
1332: ##
1333: ## formname = the name given in the <form> tag.
1334: #-------------------------------------------
1335:
1336: =pod
1337:
1338: =head1 Authentication Routines
1339:
1340: =over 4
1341:
1342: =item * authform_xxxxxx
1343:
1344: The authform_xxxxxx subroutines provide javascript and html forms which
1345: handle some of the conveniences required for authentication forms.
1346: This is not an optimal method, but it works.
1347:
1348: See loncreateuser.pm for invocation and use examples.
1349:
1350: =over 4
1351:
1352: =item * authform_header
1353:
1354: =item * authform_authorwarning
1355:
1356: =item * authform_nochange
1357:
1358: =item * authform_kerberos
1359:
1360: =item * authform_internal
1361:
1362: =item * authform_filesystem
1363:
1364: =back
1365:
1366: =back
1367:
1368: =cut
1369:
1370: #-------------------------------------------
1371: sub authform_header{
1372: my %in = (
1373: formname => 'cu',
1374: kerb_def_dom => '',
1375: @_,
1376: );
1377: $in{'formname'} = 'document.' . $in{'formname'};
1378: my $result='';
1379:
1380: #---------------------------------------------- Code for upper case translation
1381: my $Javascript_toUpperCase;
1382: unless ($in{kerb_def_dom}) {
1383: $Javascript_toUpperCase =<<"END";
1384: switch (choice) {
1385: case 'krb': currentform.elements[choicearg].value =
1386: currentform.elements[choicearg].value.toUpperCase();
1387: break;
1388: default:
1389: }
1390: END
1391: } else {
1392: $Javascript_toUpperCase = "";
1393: }
1394:
1395: my $radioval = "'nochange'";
1396: if (exists($in{'curr_authtype'}) &&
1397: defined($in{'curr_authtype'}) &&
1398: $in{'curr_authtype'} ne '') {
1399: $radioval = "'$in{'curr_authtype'}arg'";
1400: }
1401: my $argfield = 'null';
1402: if ( grep/^mode$/,(keys %in) ) {
1403: if ($in{'mode'} eq 'modifycourse') {
1404: if ( grep/^curr_authtype$/,(keys %in) ) {
1405: $radioval = "'$in{'curr_authtype'}'";
1406: }
1407: if ( grep/^curr_autharg$/,(keys %in) ) {
1408: unless ($in{'curr_autharg'} eq '') {
1409: $argfield = "'$in{'curr_autharg'}'";
1410: }
1411: }
1412: }
1413: }
1414:
1415: $result.=<<"END";
1416: var current = new Object();
1417: current.radiovalue = $radioval;
1418: current.argfield = $argfield;
1419:
1420: function changed_radio(choice,currentform) {
1421: var choicearg = choice + 'arg';
1422: // If a radio button in changed, we need to change the argfield
1423: if (current.radiovalue != choice) {
1424: current.radiovalue = choice;
1425: if (current.argfield != null) {
1426: currentform.elements[current.argfield].value = '';
1427: }
1428: if (choice == 'nochange') {
1429: current.argfield = null;
1430: } else {
1431: current.argfield = choicearg;
1432: switch(choice) {
1433: case 'krb':
1434: currentform.elements[current.argfield].value =
1435: "$in{'kerb_def_dom'}";
1436: break;
1437: default:
1438: break;
1439: }
1440: }
1441: }
1442: return;
1443: }
1444:
1445: function changed_text(choice,currentform) {
1446: var choicearg = choice + 'arg';
1447: if (currentform.elements[choicearg].value !='') {
1448: $Javascript_toUpperCase
1449: // clear old field
1450: if ((current.argfield != choicearg) && (current.argfield != null)) {
1451: currentform.elements[current.argfield].value = '';
1452: }
1453: current.argfield = choicearg;
1454: }
1455: set_auth_radio_buttons(choice,currentform);
1456: return;
1457: }
1458:
1459: function set_auth_radio_buttons(newvalue,currentform) {
1460: var i=0;
1461: while (i < currentform.login.length) {
1462: if (currentform.login[i].value == newvalue) { break; }
1463: i++;
1464: }
1465: if (i == currentform.login.length) {
1466: return;
1467: }
1468: current.radiovalue = newvalue;
1469: currentform.login[i].checked = true;
1470: return;
1471: }
1472: END
1473: return $result;
1474: }
1475:
1476: sub authform_authorwarning{
1477: my $result='';
1478: $result='<i>'.
1479: &mt('As a general rule, only authors or co-authors should be '.
1480: 'filesystem authenticated '.
1481: '(which allows access to the server filesystem).')."</i>\n";
1482: return $result;
1483: }
1484:
1485: sub authform_nochange{
1486: my %in = (
1487: formname => 'document.cu',
1488: kerb_def_dom => 'MSU.EDU',
1489: @_,
1490: );
1491: my $result = &mt('[_1] Do not change login data',
1492: '<input type="radio" name="login" value="nochange" '.
1493: 'checked="checked" onclick="'.
1494: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1495: return $result;
1496: }
1497:
1498: sub authform_kerberos{
1499: my %in = (
1500: formname => 'document.cu',
1501: kerb_def_dom => 'MSU.EDU',
1502: kerb_def_auth => 'krb4',
1503: @_,
1504: );
1505: my ($check4,$check5,$krbarg);
1506: if ($in{'kerb_def_auth'} eq 'krb5') {
1507: $check5 = " checked=\"on\"";
1508: } else {
1509: $check4 = " checked=\"on\"";
1510: }
1511: $krbarg = $in{'kerb_def_dom'};
1512:
1513: my $krbcheck = "";
1514: if ( grep/^curr_authtype$/,(keys %in) ) {
1515: if ($in{'curr_authtype'} =~ m/^krb/) {
1516: $krbcheck = " checked=\"on\"";
1517: if ( grep/^curr_autharg$/,(keys %in) ) {
1518: $krbarg = $in{'curr_autharg'};
1519: }
1520: }
1521: }
1522:
1523: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1524: my $result .= &mt
1525: ('[_1] Kerberos authenticated with domain [_2] '.
1526: '[_3] Version 4 [_4] Version 5',
1527: '<input type="radio" name="login" value="krb" '.
1528: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1529: '<input type="text" size="10" name="krbarg" '.
1530: 'value="'.$krbarg.'" '.
1531: 'onchange="'.$jscall.'" />',
1532: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1533: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1534: return $result;
1535: }
1536:
1537: sub authform_internal{
1538: my %args = (
1539: formname => 'document.cu',
1540: kerb_def_dom => 'MSU.EDU',
1541: @_,
1542: );
1543:
1544: my $intcheck = "";
1545: my $intarg = 'value=""';
1546: if ( grep/^curr_authtype$/,(keys %args) ) {
1547: if ($args{'curr_authtype'} eq 'int') {
1548: $intcheck = " checked=\"on\"";
1549: if ( grep/^curr_autharg$/,(keys %args) ) {
1550: $intarg = "value=\"$args{'curr_autharg'}\"";
1551: }
1552: }
1553: }
1554:
1555: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1556: my $result.=&mt
1557: ('[_1] Internally authenticated (with initial password [_2])',
1558: '<input type="radio" name="login" value="int" '.$intcheck.
1559: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1560: '<input type="text" size="10" name="intarg" '.$intarg.
1561: ' onchange="'.$jscall.'" />');
1562: return $result;
1563: }
1564:
1565: sub authform_local{
1566: my %in = (
1567: formname => 'document.cu',
1568: kerb_def_dom => 'MSU.EDU',
1569: @_,
1570: );
1571:
1572: my $loccheck = "";
1573: my $locarg = 'value=""';
1574: if ( grep/^curr_authtype$/,(keys %in) ) {
1575: if ($in{'curr_authtype'} eq 'loc') {
1576: $loccheck = " checked=\"on\"";
1577: if ( grep/^curr_autharg$/,(keys %in) ) {
1578: $locarg = "value=\"$in{'curr_autharg'}\"";
1579: }
1580: }
1581: }
1582:
1583: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1584: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1585: '<input type="radio" name="login" value="loc" '.$loccheck.
1586: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1587: '<input type="text" size="10" name="locarg" '.$locarg.
1588: ' onchange="'.$jscall.'" />');
1589: return $result;
1590: }
1591:
1592: sub authform_filesystem{
1593: my %in = (
1594: formname => 'document.cu',
1595: kerb_def_dom => 'MSU.EDU',
1596: @_,
1597: );
1598: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1599: my $result.= &mt
1600: ('[_1] Filesystem Authenticated (with initial password [_2])',
1601: '<input type="radio" name="login" value="fsys" '.
1602: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1603: '<input type="text" size="10" name="fsysarg" value="" '.
1604: 'onchange="'.$jscall.'" />');
1605: return $result;
1606: }
1607:
1608: ###############################################################
1609: ## Get Authentication Defaults for Domain ##
1610: ###############################################################
1611:
1612: =pod
1613:
1614: =head1 Domains and Authentication
1615:
1616: Returns default authentication type and an associated argument as
1617: listed in file 'domain.tab'.
1618:
1619: =over 4
1620:
1621: =item * get_auth_defaults
1622:
1623: get_auth_defaults($target_domain) returns the default authentication
1624: type and an associated argument (initial password or a kerberos domain).
1625: These values are stored in lonTabs/domain.tab
1626:
1627: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1628:
1629: If target_domain is not found in domain.tab, returns nothing ('').
1630:
1631: =cut
1632:
1633: #-------------------------------------------
1634: sub get_auth_defaults {
1635: my $domain=shift;
1636: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1637: }
1638: ###############################################################
1639: ## End Get Authentication Defaults for Domain ##
1640: ###############################################################
1641:
1642: ###############################################################
1643: ## Get Kerberos Defaults for Domain ##
1644: ###############################################################
1645: ##
1646: ## Returns default kerberos version and an associated argument
1647: ## as listed in file domain.tab. If not listed, provides
1648: ## appropriate default domain and kerberos version.
1649: ##
1650: #-------------------------------------------
1651:
1652: =pod
1653:
1654: =item * get_kerberos_defaults
1655:
1656: get_kerberos_defaults($target_domain) returns the default kerberos
1657: version and domain. If not found in domain.tabs, it defaults to
1658: version 4 and the domain of the server.
1659:
1660: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1661:
1662: =cut
1663:
1664: #-------------------------------------------
1665: sub get_kerberos_defaults {
1666: my $domain=shift;
1667: my ($krbdef,$krbdefdom) =
1668: &Apache::loncommon::get_auth_defaults($domain);
1669: unless ($krbdef =~/^krb/ && $krbdefdom) {
1670: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1671: my $krbdefdom=$1;
1672: $krbdefdom=~tr/a-z/A-Z/;
1673: $krbdef = "krb4";
1674: }
1675: return ($krbdef,$krbdefdom);
1676: }
1677:
1678: =pod
1679:
1680: =back
1681:
1682: =cut
1683:
1684: ###############################################################
1685: ## Thesaurus Functions ##
1686: ###############################################################
1687:
1688: =pod
1689:
1690: =head1 Thesaurus Functions
1691:
1692: =over 4
1693:
1694: =item * initialize_keywords
1695:
1696: Initializes the package variable %Keywords if it is empty. Uses the
1697: package variable $thesaurus_db_file.
1698:
1699: =cut
1700:
1701: ###################################################
1702:
1703: sub initialize_keywords {
1704: return 1 if (scalar keys(%Keywords));
1705: # If we are here, %Keywords is empty, so fill it up
1706: # Make sure the file we need exists...
1707: if (! -e $thesaurus_db_file) {
1708: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1709: " failed because it does not exist");
1710: return 0;
1711: }
1712: # Set up the hash as a database
1713: my %thesaurus_db;
1714: if (! tie(%thesaurus_db,'GDBM_File',
1715: $thesaurus_db_file,&GDBM_READER(),0640)){
1716: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1717: $thesaurus_db_file);
1718: return 0;
1719: }
1720: # Get the average number of appearances of a word.
1721: my $avecount = $thesaurus_db{'average.count'};
1722: # Put keywords (those that appear > average) into %Keywords
1723: while (my ($word,$data)=each (%thesaurus_db)) {
1724: my ($count,undef) = split /:/,$data;
1725: $Keywords{$word}++ if ($count > $avecount);
1726: }
1727: untie %thesaurus_db;
1728: # Remove special values from %Keywords.
1729: foreach ('total.count','average.count') {
1730: delete($Keywords{$_}) if (exists($Keywords{$_}));
1731: }
1732: return 1;
1733: }
1734:
1735: ###################################################
1736:
1737: =pod
1738:
1739: =item * keyword($word)
1740:
1741: Returns true if $word is a keyword. A keyword is a word that appears more
1742: than the average number of times in the thesaurus database. Calls
1743: &initialize_keywords
1744:
1745: =cut
1746:
1747: ###################################################
1748:
1749: sub keyword {
1750: return if (!&initialize_keywords());
1751: my $word=lc(shift());
1752: $word=~s/\W//g;
1753: return exists($Keywords{$word});
1754: }
1755:
1756: ###############################################################
1757:
1758: =pod
1759:
1760: =item * get_related_words
1761:
1762: Look up a word in the thesaurus. Takes a scalar argument and returns
1763: an array of words. If the keyword is not in the thesaurus, an empty array
1764: will be returned. The order of the words returned is determined by the
1765: database which holds them.
1766:
1767: Uses global $thesaurus_db_file.
1768:
1769: =cut
1770:
1771: ###############################################################
1772: sub get_related_words {
1773: my $keyword = shift;
1774: my %thesaurus_db;
1775: if (! -e $thesaurus_db_file) {
1776: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1777: "failed because the file does not exist");
1778: return ();
1779: }
1780: if (! tie(%thesaurus_db,'GDBM_File',
1781: $thesaurus_db_file,&GDBM_READER(),0640)){
1782: return ();
1783: }
1784: my @Words=();
1785: if (exists($thesaurus_db{$keyword})) {
1786: $_ = $thesaurus_db{$keyword};
1787: (undef,@Words) = split/:/; # The first element is the number of times
1788: # the word appears. We do not need it now.
1789: for (my $i=0;$i<=$#Words;$i++) {
1790: ($Words[$i],undef)= split/\,/,$Words[$i];
1791: }
1792: }
1793: untie %thesaurus_db;
1794: return @Words;
1795: }
1796:
1797: =pod
1798:
1799: =back
1800:
1801: =cut
1802:
1803: # -------------------------------------------------------------- Plaintext name
1804: =pod
1805:
1806: =head1 User Name Functions
1807:
1808: =over 4
1809:
1810: =item * plainname($uname,$udom,$first)
1811:
1812: Takes a users logon name and returns it as a string in
1813: "first middle last generation" form
1814: if $first is set to 'lastname' then it returns it as
1815: 'lastname generation, firstname middlename' if their is a lastname
1816:
1817: =cut
1818:
1819: ###############################################################
1820: sub plainname {
1821: my ($uname,$udom,$first)=@_;
1822: my %names=&Apache::lonnet::get('environment',
1823: ['firstname','middlename','lastname','generation'],
1824: $udom,$uname);
1825: my $name=&Apache::lonnet::format_name($names{'firstname'},
1826: $names{'middlename'},
1827: $names{'lastname'},
1828: $names{'generation'},$first);
1829: $name=~s/^\s+//;
1830: $name=~s/\s+$//;
1831: $name=~s/\s+/ /g;
1832: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1833: return $name;
1834: }
1835:
1836: # -------------------------------------------------------------------- Nickname
1837: =pod
1838:
1839: =item * nickname($uname,$udom)
1840:
1841: Gets a users name and returns it as a string as
1842:
1843: ""nickname""
1844:
1845: if the user has a nickname or
1846:
1847: "first middle last generation"
1848:
1849: if the user does not
1850:
1851: =cut
1852:
1853: sub nickname {
1854: my ($uname,$udom)=@_;
1855: my %names;
1856: if ($uname eq $ENV{'user.name'} &&
1857: $udom eq $ENV{'user.domain'}) {
1858: %names=('nickname' => $ENV{'environment.nickname'} ,
1859: 'firstname' => $ENV{'environment.firstname'} ,
1860: 'middlename' => $ENV{'environment.middlename'},
1861: 'lastname' => $ENV{'environment.lastname'} ,
1862: 'generation' => $ENV{'environment.generation'});
1863: } else {
1864: %names=&Apache::lonnet::get('environment',
1865: ['nickname','firstname','middlename',
1866: 'lastname','generation'],$udom,$uname);
1867: }
1868: my $name=$names{'nickname'};
1869: if ($name) {
1870: $name='"'.$name.'"';
1871: } else {
1872: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1873: $names{'lastname'}.' '.$names{'generation'};
1874: $name=~s/\s+$//;
1875: $name=~s/\s+/ /g;
1876: }
1877: return $name;
1878: }
1879:
1880:
1881: # ------------------------------------------------------------------ Screenname
1882:
1883: =pod
1884:
1885: =item * screenname($uname,$udom)
1886:
1887: Gets a users screenname and returns it as a string
1888:
1889: =cut
1890:
1891: sub screenname {
1892: my ($uname,$udom)=@_;
1893: if ($uname eq $ENV{'user.name'} &&
1894: $udom eq $ENV{'user.domain'}) {return $ENV{'environment.screenname'};}
1895: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1896: return $names{'screenname'};
1897: }
1898:
1899:
1900: # ------------------------------------------------------------- Message Wrapper
1901:
1902: sub messagewrapper {
1903: my ($link,$username,$domain)=@_;
1904: return
1905: '<a href="/adm/email?compose=individual&'.
1906: 'recname='.$username.'&recdom='.$domain.'" '.
1907: 'title="'.&mt('Send message').'">'.$link.'</a>';
1908: }
1909: # --------------------------------------------------------------- Notes Wrapper
1910:
1911: sub noteswrapper {
1912: my ($link,$un,$do)=@_;
1913: return
1914: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1915: }
1916: # ------------------------------------------------------------- Aboutme Wrapper
1917:
1918: sub aboutmewrapper {
1919: my ($link,$username,$domain,$target)=@_;
1920: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1921: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1922: }
1923:
1924: # ------------------------------------------------------------ Syllabus Wrapper
1925:
1926:
1927: sub syllabuswrapper {
1928: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1929: if ($fontcolor) {
1930: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1931: }
1932: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1933: }
1934:
1935: sub track_student_link {
1936: my ($linktext,$sname,$sdom,$target) = @_;
1937: my $link ="/adm/trackstudent";
1938: my $title = 'View recent activity';
1939: if (defined($sname) && $sname !~ /^\s*$/ &&
1940: defined($sdom) && $sdom !~ /^\s*$/) {
1941: $link .= "?selected_student=$sname:$sdom";
1942: $title .= ' of this student';
1943: }
1944: if (defined($target) && $target !~ /^\s*$/) {
1945: $target = qq{target="$target"};
1946: } else {
1947: $target = '';
1948: }
1949: return qq{<a href="$link" title="$title" $target>$linktext</a>};
1950: }
1951:
1952:
1953:
1954: =pod
1955:
1956: =back
1957:
1958: =head1 Access .tab File Data
1959:
1960: =over 4
1961:
1962: =item * languageids()
1963:
1964: returns list of all language ids
1965:
1966: =cut
1967:
1968: sub languageids {
1969: return sort(keys(%language));
1970: }
1971:
1972: =pod
1973:
1974: =item * languagedescription()
1975:
1976: returns description of a specified language id
1977:
1978: =cut
1979:
1980: sub languagedescription {
1981: my $code=shift;
1982: return ($supported_language{$code}?'* ':'').
1983: $language{$code}.
1984: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1985: }
1986:
1987: sub plainlanguagedescription {
1988: my $code=shift;
1989: return $language{$code};
1990: }
1991:
1992: sub supportedlanguagecode {
1993: my $code=shift;
1994: return $supported_language{$code};
1995: }
1996:
1997: =pod
1998:
1999: =item * copyrightids()
2000:
2001: returns list of all copyrights
2002:
2003: =cut
2004:
2005: sub copyrightids {
2006: return sort(keys(%cprtag));
2007: }
2008:
2009: =pod
2010:
2011: =item * copyrightdescription()
2012:
2013: returns description of a specified copyright id
2014:
2015: =cut
2016:
2017: sub copyrightdescription {
2018: return &mt($cprtag{shift(@_)});
2019: }
2020:
2021: =pod
2022:
2023: =item * source_copyrightids()
2024:
2025: returns list of all source copyrights
2026:
2027: =cut
2028:
2029: sub source_copyrightids {
2030: return sort(keys(%scprtag));
2031: }
2032:
2033: =pod
2034:
2035: =item * source_copyrightdescription()
2036:
2037: returns description of a specified source copyright id
2038:
2039: =cut
2040:
2041: sub source_copyrightdescription {
2042: return &mt($scprtag{shift(@_)});
2043: }
2044:
2045: =pod
2046:
2047: =item * filecategories()
2048:
2049: returns list of all file categories
2050:
2051: =cut
2052:
2053: sub filecategories {
2054: return sort(keys(%category_extensions));
2055: }
2056:
2057: =pod
2058:
2059: =item * filecategorytypes()
2060:
2061: returns list of file types belonging to a given file
2062: category
2063:
2064: =cut
2065:
2066: sub filecategorytypes {
2067: return @{$category_extensions{lc($_[0])}};
2068: }
2069:
2070: =pod
2071:
2072: =item * fileembstyle()
2073:
2074: returns embedding style for a specified file type
2075:
2076: =cut
2077:
2078: sub fileembstyle {
2079: return $fe{lc(shift(@_))};
2080: }
2081:
2082:
2083: sub filecategoryselect {
2084: my ($name,$value)=@_;
2085: return &select_form($value,$name,
2086: '' => &mt('Any category'),
2087: map { $_,$_ } sort(keys(%category_extensions)));
2088: }
2089:
2090: =pod
2091:
2092: =item * filedescription()
2093:
2094: returns description for a specified file type
2095:
2096: =cut
2097:
2098: sub filedescription {
2099: my $file_description = $fd{lc(shift())};
2100: $file_description =~ s:([\[\]]):~$1:g;
2101: return &mt($file_description);
2102: }
2103:
2104: =pod
2105:
2106: =item * filedescriptionex()
2107:
2108: returns description for a specified file type with
2109: extra formatting
2110:
2111: =cut
2112:
2113: sub filedescriptionex {
2114: my $ex=shift;
2115: my $file_description = $fd{lc($ex)};
2116: $file_description =~ s:([\[\]]):~$1:g;
2117: return '.'.$ex.' '.&mt($file_description);
2118: }
2119:
2120: # End of .tab access
2121: =pod
2122:
2123: =back
2124:
2125: =cut
2126:
2127: # ------------------------------------------------------------------ File Types
2128: sub fileextensions {
2129: return sort(keys(%fe));
2130: }
2131:
2132: # ----------------------------------------------------------- Display Languages
2133: # returns a hash with all desired display languages
2134: #
2135:
2136: sub display_languages {
2137: my %languages=();
2138: foreach (&preferred_languages()) {
2139: $languages{$_}=1;
2140: }
2141: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2142: if ($ENV{'form.displaylanguage'}) {
2143: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
2144: $languages{$_}=1;
2145: }
2146: }
2147: return %languages;
2148: }
2149:
2150: sub preferred_languages {
2151: my @languages=();
2152: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
2153: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2154: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
2155: }
2156: if ($ENV{'environment.languages'}) {
2157: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
2158: }
2159: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2160: if ($browser) {
2161: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2162: }
2163: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
2164: @languages=(@languages,
2165: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
2166: }
2167: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
2168: @languages=(@languages,
2169: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
2170: }
2171: if ($Apache::lonnet::domain_lang_def{
2172: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2173: @languages=(@languages,
2174: $Apache::lonnet::domain_lang_def{
2175: $Apache::lonnet::perlvar{'lonDefDomain'}});
2176: }
2177: # turn "en-ca" into "en-ca,en"
2178: my @genlanguages;
2179: foreach (@languages) {
2180: unless ($_=~/\w/) { next; }
2181: push (@genlanguages,$_);
2182: if ($_=~/(\-|\_)/) {
2183: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2184: }
2185: }
2186: return @genlanguages;
2187: }
2188:
2189: ###############################################################
2190: ## Student Answer Attempts ##
2191: ###############################################################
2192:
2193: =pod
2194:
2195: =head1 Alternate Problem Views
2196:
2197: =over 4
2198:
2199: =item * get_previous_attempt($symb, $username, $domain, $course,
2200: $getattempt, $regexp, $gradesub)
2201:
2202: Return string with previous attempt on problem. Arguments:
2203:
2204: =over 4
2205:
2206: =item * $symb: Problem, including path
2207:
2208: =item * $username: username of the desired student
2209:
2210: =item * $domain: domain of the desired student
2211:
2212: =item * $course: Course ID
2213:
2214: =item * $getattempt: Leave blank for all attempts, otherwise put
2215: something
2216:
2217: =item * $regexp: if string matches this regexp, the string will be
2218: sent to $gradesub
2219:
2220: =item * $gradesub: routine that processes the string if it matches $regexp
2221:
2222: =back
2223:
2224: The output string is a table containing all desired attempts, if any.
2225:
2226: =cut
2227:
2228: sub get_previous_attempt {
2229: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2230: my $prevattempts='';
2231: no strict 'refs';
2232: if ($symb) {
2233: my (%returnhash)=
2234: &Apache::lonnet::restore($symb,$course,$domain,$username);
2235: if ($returnhash{'version'}) {
2236: my %lasthash=();
2237: my $version;
2238: for ($version=1;$version<=$returnhash{'version'};$version++) {
2239: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2240: $lasthash{$_}=$returnhash{$version.':'.$_};
2241: }
2242: }
2243: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2244: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2245: foreach (sort(keys %lasthash)) {
2246: my ($ign,@parts) = split(/\./,$_);
2247: if ($#parts > 0) {
2248: my $data=$parts[-1];
2249: pop(@parts);
2250: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2251: } else {
2252: if ($#parts == 0) {
2253: $prevattempts.='<th>'.$parts[0].'</th>';
2254: } else {
2255: $prevattempts.='<th>'.$ign.'</th>';
2256: }
2257: }
2258: }
2259: if ($getattempt eq '') {
2260: for ($version=1;$version<=$returnhash{'version'};$version++) {
2261: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2262: foreach (sort(keys %lasthash)) {
2263: my $value;
2264: if ($_ =~ /timestamp/) {
2265: $value=scalar(localtime($returnhash{$version.':'.$_}));
2266: } else {
2267: $value=$returnhash{$version.':'.$_};
2268: }
2269: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2270: }
2271: }
2272: }
2273: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2274: foreach (sort(keys %lasthash)) {
2275: my $value;
2276: if ($_ =~ /timestamp/) {
2277: $value=scalar(localtime($lasthash{$_}));
2278: } else {
2279: $value=$lasthash{$_};
2280: }
2281: $value=&Apache::lonnet::unescape($value);
2282: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2283: $prevattempts.='<td>'.$value.' </td>';
2284: }
2285: $prevattempts.='</tr></table></td></tr></table>';
2286: } else {
2287: $prevattempts='Nothing submitted - no attempts.';
2288: }
2289: } else {
2290: $prevattempts='No data.';
2291: }
2292: }
2293:
2294: sub relative_to_absolute {
2295: my ($url,$output)=@_;
2296: my $parser=HTML::TokeParser->new(\$output);
2297: my $token;
2298: my $thisdir=$url;
2299: my @rlinks=();
2300: while ($token=$parser->get_token) {
2301: if ($token->[0] eq 'S') {
2302: if ($token->[1] eq 'a') {
2303: if ($token->[2]->{'href'}) {
2304: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2305: }
2306: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2307: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2308: } elsif ($token->[1] eq 'base') {
2309: $thisdir=$token->[2]->{'href'};
2310: }
2311: }
2312: }
2313: $thisdir=~s-/[^/]*$--;
2314: foreach (@rlinks) {
2315: unless (($_=~/^http:\/\//i) ||
2316: ($_=~/^\//) ||
2317: ($_=~/^javascript:/i) ||
2318: ($_=~/^mailto:/i) ||
2319: ($_=~/^\#/)) {
2320: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2321: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2322: }
2323: }
2324: # -------------------------------------------------- Deal with Applet codebases
2325: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2326: return $output;
2327: }
2328:
2329: =pod
2330:
2331: =item * get_student_view
2332:
2333: show a snapshot of what student was looking at
2334:
2335: =cut
2336:
2337: sub get_student_view {
2338: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2339: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2340: my (%form);
2341: my @elements=('symb','courseid','domain','username');
2342: foreach my $element (@elements) {
2343: $form{'grade_'.$element}=eval '$'.$element #'
2344: }
2345: if (defined($moreenv)) {
2346: %form=(%form,%{$moreenv});
2347: }
2348: if (defined($target)) { $form{'grade_target'} = $target; }
2349: $feedurl=&Apache::lonnet::clutter($feedurl);
2350: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2351: $userview=~s/\<body[^\>]*\>//gi;
2352: $userview=~s/\<\/body\>//gi;
2353: $userview=~s/\<html\>//gi;
2354: $userview=~s/\<\/html\>//gi;
2355: $userview=~s/\<head\>//gi;
2356: $userview=~s/\<\/head\>//gi;
2357: $userview=~s/action\s*\=/would_be_action\=/gi;
2358: $userview=&relative_to_absolute($feedurl,$userview);
2359: return $userview;
2360: }
2361:
2362: =pod
2363:
2364: =item * get_student_answers()
2365:
2366: show a snapshot of how student was answering problem
2367:
2368: =cut
2369:
2370: sub get_student_answers {
2371: my ($symb,$username,$domain,$courseid,%form) = @_;
2372: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2373: my (%moreenv);
2374: my @elements=('symb','courseid','domain','username');
2375: foreach my $element (@elements) {
2376: $moreenv{'grade_'.$element}=eval '$'.$element #'
2377: }
2378: $moreenv{'grade_target'}='answer';
2379: %moreenv=(%form,%moreenv);
2380: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2381: return $userview;
2382: }
2383:
2384: =pod
2385:
2386: =item * &submlink()
2387:
2388: Inputs: $text $uname $udom $symb $target
2389:
2390: Returns: A link to grades.pm such as to see the SUBM view of a student
2391:
2392: =cut
2393:
2394: ###############################################
2395: sub submlink {
2396: my ($text,$uname,$udom,$symb,$target)=@_;
2397: if (!($uname && $udom)) {
2398: (my $cursymb, my $courseid,$udom,$uname)=
2399: &Apache::lonxml::whichuser($symb);
2400: if (!$symb) { $symb=$cursymb; }
2401: }
2402: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2403: $symb=&Apache::lonnet::escape($symb);
2404: if ($target) { $target="target=\"$target\""; }
2405: return '<a href="/adm/grades?&command=submission&'.
2406: 'symb='.$symb.'&student='.$uname.
2407: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2408: }
2409: ##############################################
2410:
2411: =pod
2412:
2413: =item * &pgrdlink()
2414:
2415: Inputs: $text $uname $udom $symb $target
2416:
2417: Returns: A link to grades.pm such as to see the PGRD view of a student
2418:
2419: =cut
2420:
2421: ###############################################
2422: sub pgrdlink {
2423: my $link=&submlink(@_);
2424: $link=~s/(&command=submission)/$1&showgrading=yes/;
2425: return $link;
2426: }
2427: ##############################################
2428:
2429: =pod
2430:
2431: =item * &pprmlink()
2432:
2433: Inputs: $text $uname $udom $symb $target
2434:
2435: Returns: A link to parmset.pm such as to see the PPRM view of a
2436: student andn resource
2437:
2438: =cut
2439:
2440: ###############################################
2441: sub pprmlink {
2442: my ($text,$uname,$udom,$symb,$target)=@_;
2443: if (!($uname && $udom)) {
2444: (my $cursymb, my $courseid,$udom,$uname)=
2445: &Apache::lonxml::whichuser($symb);
2446: if (!$symb) { $symb=$cursymb; }
2447: }
2448: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2449: $symb=&Apache::lonnet::escape($symb);
2450: if ($target) { $target="target=\"$target\""; }
2451: return '<a href="/adm/parmset?&command=set&'.
2452: 'symb='.$symb.'&uname='.$uname.
2453: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2454: }
2455: ##############################################
2456:
2457: =pod
2458:
2459: =back
2460:
2461: =cut
2462:
2463: ###############################################
2464:
2465:
2466: sub timehash {
2467: my @ltime=localtime(shift);
2468: return ( 'seconds' => $ltime[0],
2469: 'minutes' => $ltime[1],
2470: 'hours' => $ltime[2],
2471: 'day' => $ltime[3],
2472: 'month' => $ltime[4]+1,
2473: 'year' => $ltime[5]+1900,
2474: 'weekday' => $ltime[6],
2475: 'dayyear' => $ltime[7]+1,
2476: 'dlsav' => $ltime[8] );
2477: }
2478:
2479: sub maketime {
2480: my %th=@_;
2481: return POSIX::mktime(
2482: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2483: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2484: }
2485:
2486: #########################################
2487:
2488: sub findallcourses {
2489: my %courses=();
2490: my $now=time;
2491: foreach (keys %ENV) {
2492: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2493: my ($starttime,$endtime)=$ENV{$_};
2494: my $active=1;
2495: if ($starttime) {
2496: if ($now<$starttime) { $active=0; }
2497: }
2498: if ($endtime) {
2499: if ($now>$endtime) { $active=0; }
2500: }
2501: if ($active) { $courses{$1.'_'.$2}=1; }
2502: }
2503: }
2504: return keys %courses;
2505: }
2506:
2507: ###############################################
2508: ###############################################
2509:
2510: =pod
2511:
2512: =head1 Domain Template Functions
2513:
2514: =over 4
2515:
2516: =item * &determinedomain()
2517:
2518: Inputs: $domain (usually will be undef)
2519:
2520: Returns: Determines which domain should be used for designs
2521:
2522: =cut
2523:
2524: ###############################################
2525: sub determinedomain {
2526: my $domain=shift;
2527: if (! $domain) {
2528: # Determine domain if we have not been given one
2529: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2530: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2531: if ($ENV{'request.role.domain'}) {
2532: $domain=$ENV{'request.role.domain'};
2533: }
2534: }
2535: return $domain;
2536: }
2537: ###############################################
2538: =pod
2539:
2540: =item * &domainlogo()
2541:
2542: Inputs: $domain (usually will be undef)
2543:
2544: Returns: A link to a domain logo, if the domain logo exists.
2545: If the domain logo does not exist, a description of the domain.
2546:
2547: =cut
2548:
2549: ###############################################
2550: sub domainlogo {
2551: my $domain = &determinedomain(shift);
2552: # See if there is a logo
2553: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2554: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2555: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2556: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2557: return $Apache::lonnet::domaindescription{$domain};
2558: } else {
2559: return '';
2560: }
2561: }
2562: ##############################################
2563:
2564: =pod
2565:
2566: =item * &designparm()
2567:
2568: Inputs: $which parameter; $domain (usually will be undef)
2569:
2570: Returns: value of designparamter $which
2571:
2572: =cut
2573:
2574: ##############################################
2575: sub designparm {
2576: my ($which,$domain)=@_;
2577: if ($ENV{'browser.blackwhite'} eq 'on') {
2578: if ($which=~/\.(font|alink|vlink|link)$/) {
2579: return '#000000';
2580: }
2581: if ($which=~/\.(pgbg|sidebg)$/) {
2582: return '#FFFFFF';
2583: }
2584: if ($which=~/\.tabbg$/) {
2585: return '#CCCCCC';
2586: }
2587: }
2588: if ($ENV{'environment.color.'.$which}) {
2589: return $ENV{'environment.color.'.$which};
2590: }
2591: $domain=&determinedomain($domain);
2592: if ($designhash{$domain.'.'.$which}) {
2593: return $designhash{$domain.'.'.$which};
2594: } else {
2595: return $designhash{'default.'.$which};
2596: }
2597: }
2598:
2599: ###############################################
2600: ###############################################
2601:
2602: =pod
2603:
2604: =back
2605:
2606: =head1 HTTP Helpers
2607:
2608: =over 4
2609:
2610: =item * &bodytag()
2611:
2612: Returns a uniform header for LON-CAPA web pages.
2613:
2614: Inputs:
2615:
2616: =over 4
2617:
2618: =item * $title, A title to be displayed on the page.
2619:
2620: =item * $function, the current role (can be undef).
2621:
2622: =item * $addentries, extra parameters for the <body> tag.
2623:
2624: =item * $bodyonly, if defined, only return the <body> tag.
2625:
2626: =item * $domain, if defined, force a given domain.
2627:
2628: =item * $forcereg, if page should register as content page (relevant for
2629: text interface only)
2630:
2631: =back
2632:
2633: Returns: A uniform header for LON-CAPA web pages.
2634: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2635: If $bodyonly is undef or zero, an html string containing a <body> tag and
2636: other decorations will be returned.
2637:
2638: =cut
2639:
2640: sub bodytag {
2641: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle)=@_;
2642: $title=&mt($title);
2643: $function = &get_users_function() if (!$function);
2644: my $img=&designparm($function.'.img',$domain);
2645: my $pgbg=&designparm($function.'.pgbg',$domain);
2646: my $tabbg=&designparm($function.'.tabbg',$domain);
2647: my $font=&designparm($function.'.font',$domain);
2648: my $link=&designparm($function.'.link',$domain);
2649: my $alink=&designparm($function.'.alink',$domain);
2650: my $vlink=&designparm($function.'.vlink',$domain);
2651: my $sidebg=&designparm($function.'.sidebg',$domain);
2652: # Accessibility font enhance
2653: unless ($addentries) { $addentries=''; }
2654: my $addstyle='';
2655: if ($ENV{'browser.fontenhance'} eq 'on') {
2656: $addstyle=' font-size: x-large;';
2657: }
2658: # role and realm
2659: my ($role,$realm)
2660: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2661: # realm
2662: if ($ENV{'request.course.id'}) {
2663: $realm=
2664: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2665: }
2666: unless ($realm) { $realm=' '; }
2667: # Set messages
2668: my $messages=&domainlogo($domain);
2669: # Port for miniserver
2670: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2671: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2672: # construct main body tag
2673: my $bodytag = <<END;
2674: <style type="text/css">
2675: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2676: a:focus { color: red; background: yellow }
2677: </style>
2678: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2679: style="margin-top: 0px;$addstyle" $addentries>
2680: END
2681: if ($ENV{'environment.texengine'} eq 'jsMath') {
2682: $bodytag.='<script type="text/javascript">
2683: function NoFontMessage () {}
2684: </script>'."\n".
2685: '<script src="/adm/jsMath/jsMath.js"></script>'."\n";
2686: }
2687:
2688: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2689: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2690: if ($bodyonly) {
2691: return $bodytag;
2692: } elsif ($ENV{'browser.interface'} eq 'textual') {
2693: # Accessibility
2694:
2695: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2696: $forcereg).
2697: '<h1>LON-CAPA: '.$title.'</h1>';
2698: } elsif ($ENV{'environment.remote'} eq 'off') {
2699: # No Remote
2700: my $roleinfo=(<<ENDROLE);
2701: <td bgcolor="$tabbg" align="right">
2702: <font size="2" face="Arial, Helvetica, sans-serif">
2703: $ENV{'environment.firstname'}
2704: $ENV{'environment.middlename'}
2705: $ENV{'environment.lastname'}
2706: $ENV{'environment.generation'}
2707: </font>
2708: <br />
2709: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2710: <br />
2711: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2712: </td>
2713: ENDROLE
2714: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
2715: $font.'"><b>'.$title.'</b></font>';
2716: if ($customtitle) {
2717: $titleinfo = $customtitle;
2718: }
2719:
2720: if ($ENV{'request.state'} eq 'construct') {
2721: my ($uname,$thisdisfn)=
2722: ($ENV{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
2723: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2724: $formaction=~s/\/+/\//g;
2725: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2726: my $parentpath = '';
2727: my $lastitem = '';
2728: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
2729: $parentpath = $1;
2730: $lastitem = $2;
2731: } else {
2732: $lastitem = $thisdisfn;
2733: }
2734: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2735: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2736: '<form name="dirs" method="post" action="'.$formaction
2737: .'" target="_top"><tt><b>'
2738: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
2739: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2740: .'</form>'
2741: .&Apache::lonmenu::constspaceform();
2742:
2743: }
2744: $forcereg=1;
2745: }
2746: my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2747: 'cellspacing="3" cellpadding="3">'.
2748: '<tr><td rowspan="3" bgcolor="'.$tabbg.'">'.
2749: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
2750: if ($ENV{'request.state'} eq 'construct') {
2751: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
2752: } else {
2753: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
2754: $titletable;
2755: }
2756: return $bodytag;
2757: }
2758:
2759: #
2760: # Top frame rendering, Remote is up
2761: #
2762: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2763: if ($customtitle) {
2764: $titleinfo = $customtitle;
2765: }
2766: #
2767: # Extra info if you are the DC
2768: my $dc_info = '';
2769: if ($ENV{'user.adv'} && exists($ENV{'user.role.dc./'.
2770: $ENV{'course.'.$ENV{'request.course.id'}.
2771: '.domain'}.'/'})) {
2772: my $cid = $ENV{'request.course.id'};
2773: $dc_info.= $cid.' '.$ENV{'course.'.$cid.'.internal.coursecode'};
2774: $dc_info = '('.$dc_info.')';
2775: }
2776: #
2777: return(<<ENDBODY);
2778: $bodytag
2779: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2780: <tr><td bgcolor="$sidebg">
2781: $upperleft</td>
2782: <td bgcolor="$sidebg" align="right">$messages </td>
2783: </tr>
2784: <tr>
2785: <td rowspan="3" bgcolor="$tabbg">
2786: $titleinfo $dc_info
2787: <td bgcolor="$tabbg" align="right">
2788: <font size="2" face="Arial, Helvetica, sans-serif">
2789: $ENV{'environment.firstname'}
2790: $ENV{'environment.middlename'}
2791: $ENV{'environment.lastname'}
2792: $ENV{'environment.generation'}
2793: </font>
2794: </td>
2795: </tr>
2796: <tr><td bgcolor="$tabbg" align="right">
2797: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2798: </td></tr>
2799: <tr>
2800: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2801: </table><br />
2802: ENDBODY
2803: }
2804:
2805: ###############################################
2806: ###############################################
2807:
2808: =pod
2809:
2810: =back
2811:
2812: =head1 HTTP Helpers
2813:
2814: =over 4
2815:
2816: =item * &endbodytag()
2817:
2818: Returns a uniform footer for LON-CAPA web pages.
2819:
2820: Inputs:
2821:
2822: =over 4
2823:
2824: =back
2825:
2826: Returns: A uniform footer for LON-CAPA web pages.
2827:
2828: =cut
2829:
2830: sub endbodytag {
2831: my $endbodytag='</body>';
2832: if ($ENV{'environment.texengine'} eq 'jsMath') {
2833: $endbodytag='<script type="text/javascript">jsMath.Process()</script>'.
2834: "\n".$endbodytag;
2835: }
2836: return $endbodytag;
2837: }
2838:
2839: ###############################################
2840:
2841: =pod
2842:
2843: =item get_users_function
2844:
2845: Used by &bodytag to determine the current users primary role.
2846: Returns either 'student','coordinator','admin', or 'author'.
2847:
2848: =cut
2849:
2850: ###############################################
2851: sub get_users_function {
2852: my $function = 'student';
2853: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2854: $function='coordinator';
2855: }
2856: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2857: $function='admin';
2858: }
2859: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2860: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2861: $function='author';
2862: }
2863: return $function;
2864: }
2865:
2866: ###############################################
2867:
2868: =pod
2869:
2870: =item get_sections
2871:
2872: Determines all the sections for a course including
2873: sections with students and sections containing other roles.
2874: Incoming parameters: domain, course number, reference to
2875: section hash (keys to be section/group IDs), reference to
2876: array containing roles for which sections should be gathered
2877: (optional). If the fourth argument is undefined, sections
2878: are gathered for any role.
2879:
2880: Returns number of sections.
2881:
2882: =cut
2883:
2884: ###############################################
2885: sub get_sections {
2886: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
2887: if (!($cdom && $cnum)) { return 0; }
2888: my $cid = $cdom.'_'.$cnum;
2889: my $numsections = 0;
2890:
2891: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
2892: my ($classlist) = &Apache::loncoursedata::get_classlist($cid,$cdom,$cnum);
2893: my $sec_index = &Apache::loncoursedata::CL_SECTION();
2894: my $status_index = &Apache::loncoursedata::CL_STATUS();
2895: while (my ($student,$data) = each %$classlist) {
2896: my ($section,$status) = ($data->[$sec_index],
2897: $data->[$status_index]);
2898: unless ($section eq '-1' || $section =~ /^\s*$/) {
2899: if (!defined($$sectioncount{$section})) { $numsections++; }
2900: $$sectioncount{$section}++;
2901: }
2902: }
2903: }
2904: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
2905: foreach my $user (sort(keys(%courseroles))) {
2906: if ($user !~ /^(\w{2})/) { next; }
2907: my ($role) = ($user =~ /^(\w{2})/);
2908: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
2909: my $section;
2910: if ($role eq 'cr' &&
2911: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
2912: $section=$1;
2913: }
2914: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
2915: if (!defined($section) || $section eq '-1') { next; }
2916: if (!defined($$sectioncount{$section})) { $numsections++; }
2917: $$sectioncount{$section}++;
2918: }
2919: return $numsections;
2920: }
2921:
2922:
2923: sub get_posted_cgi {
2924: my $r=shift;
2925:
2926: my $buffer;
2927:
2928: $r->read($buffer,$r->header_in('Content-length'),0);
2929: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2930: my @pairs=split(/&/,$buffer);
2931: my $pair;
2932: foreach $pair (@pairs) {
2933: my ($name,$value) = split(/=/,$pair);
2934: $value =~ tr/+/ /;
2935: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2936: $name =~ tr/+/ /;
2937: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2938: &add_to_env("form.$name",$value);
2939: }
2940: } else {
2941: my $contentsep=$1;
2942: my @lines = split (/\n/,$buffer);
2943: my $name='';
2944: my $value='';
2945: my $fname='';
2946: my $fmime='';
2947: my $i;
2948: for ($i=0;$i<=$#lines;$i++) {
2949: if ($lines[$i]=~/^$contentsep/) {
2950: if ($name) {
2951: chomp($value);
2952: if ($fname) {
2953: $ENV{"form.$name.filename"}=$fname;
2954: $ENV{"form.$name.mimetype"}=$fmime;
2955: } else {
2956: $value=~s/\s+$//s;
2957: }
2958: &add_to_env("form.$name",$value);
2959: }
2960: if ($i<$#lines) {
2961: $i++;
2962: $lines[$i]=~
2963: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2964: $name=$1;
2965: $value='';
2966: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2967: $fname=$1;
2968: if
2969: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2970: $fmime=$1;
2971: $i++;
2972: } else {
2973: $fmime='';
2974: }
2975: } else {
2976: $fname='';
2977: $fmime='';
2978: }
2979: $i++;
2980: }
2981: } else {
2982: $value.=$lines[$i]."\n";
2983: }
2984: }
2985: }
2986: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2987: $r->method_number(M_GET);
2988: $r->method('GET');
2989: $r->headers_in->unset('Content-length');
2990: }
2991:
2992: =pod
2993:
2994: =item * get_unprocessed_cgi($query,$possible_names)
2995:
2996: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2997: $query. The parameters listed in $possible_names (an array reference),
2998: will be set in $ENV{'form.name'} if they do not already exist.
2999:
3000: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
3001: $possible_names is an ref to an array of form element names. As an example:
3002: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
3003: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
3004:
3005: =cut
3006:
3007: sub get_unprocessed_cgi {
3008: my ($query,$possible_names)= @_;
3009: # $Apache::lonxml::debug=1;
3010: foreach (split(/&/,$query)) {
3011: my ($name, $value) = split(/=/,$_);
3012: $name = &Apache::lonnet::unescape($name);
3013: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
3014: $value =~ tr/+/ /;
3015: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3016: &Apache::lonxml::debug("Seting :$name: to :$value:");
3017: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
3018: }
3019: }
3020: }
3021:
3022: =pod
3023:
3024: =item * cacheheader()
3025:
3026: returns cache-controlling header code
3027:
3028: =cut
3029:
3030: sub cacheheader {
3031: unless ($ENV{'request.method'} eq 'GET') { return ''; }
3032: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
3033: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
3034: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
3035: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
3036: return $output;
3037: }
3038:
3039: =pod
3040:
3041: =item * no_cache($r)
3042:
3043: specifies header code to not have cache
3044:
3045: =cut
3046:
3047: sub no_cache {
3048: my ($r) = @_;
3049: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
3050: $ENV{'request.method'} ne 'GET') { return ''; }
3051: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
3052: $r->no_cache(1);
3053: $r->header_out("Expires" => $date);
3054: $r->header_out("Pragma" => "no-cache");
3055: }
3056:
3057: sub content_type {
3058: my ($r,$type,$charset) = @_;
3059: if ($ENV{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
3060: unless ($charset) {
3061: $charset=&Apache::lonlocal::current_encoding;
3062: }
3063: if ($charset) { $type.='; charset='.$charset; }
3064: if ($r) {
3065: $r->content_type($type);
3066: } else {
3067: print("Content-type: $type\n\n");
3068: }
3069: }
3070:
3071: =pod
3072:
3073: =item * add_to_env($name,$value)
3074:
3075: adds $name to the %ENV hash with value
3076: $value, if $name already exists, the entry is converted to an array
3077: reference and $value is added to the array.
3078:
3079: =cut
3080:
3081: sub add_to_env {
3082: my ($name,$value)=@_;
3083: if (defined($ENV{$name})) {
3084: if (ref($ENV{$name})) {
3085: #already have multiple values
3086: push(@{ $ENV{$name} },$value);
3087: } else {
3088: #first time seeing multiple values, convert hash entry to an arrayref
3089: my $first=$ENV{$name};
3090: undef($ENV{$name});
3091: push(@{ $ENV{$name} },$first,$value);
3092: }
3093: } else {
3094: $ENV{$name}=$value;
3095: }
3096: }
3097:
3098: =pod
3099:
3100: =item * get_env_multiple($name)
3101:
3102: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
3103: values may be defined and end up as an array ref.
3104:
3105: returns an array of values
3106:
3107: =cut
3108:
3109: sub get_env_multiple {
3110: my ($name) = @_;
3111: my @values;
3112: if (defined($ENV{$name})) {
3113: # exists is it an array
3114: if (ref($ENV{$name})) {
3115: @values=@{ $ENV{$name} };
3116: } else {
3117: $values[0]=$ENV{$name};
3118: }
3119: }
3120: return(@values);
3121: }
3122:
3123:
3124: =pod
3125:
3126: =back
3127:
3128: =head1 CSV Upload/Handling functions
3129:
3130: =over 4
3131:
3132: =item * upfile_store($r)
3133:
3134: Store uploaded file, $r should be the HTTP Request object,
3135: needs $ENV{'form.upfile'}
3136: returns $datatoken to be put into hidden field
3137:
3138: =cut
3139:
3140: sub upfile_store {
3141: my $r=shift;
3142: $ENV{'form.upfile'}=~s/\r/\n/gs;
3143: $ENV{'form.upfile'}=~s/\f/\n/gs;
3144: $ENV{'form.upfile'}=~s/\n+/\n/gs;
3145: $ENV{'form.upfile'}=~s/\n+$//gs;
3146:
3147: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
3148: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
3149: {
3150: my $datafile = $r->dir_config('lonDaemons').
3151: '/tmp/'.$datatoken.'.tmp';
3152: if ( open(my $fh,">$datafile") ) {
3153: print $fh $ENV{'form.upfile'};
3154: close($fh);
3155: }
3156: }
3157: return $datatoken;
3158: }
3159:
3160: =pod
3161:
3162: =item * load_tmp_file($r)
3163:
3164: Load uploaded file from tmp, $r should be the HTTP Request object,
3165: needs $ENV{'form.datatoken'},
3166: sets $ENV{'form.upfile'} to the contents of the file
3167:
3168: =cut
3169:
3170: sub load_tmp_file {
3171: my $r=shift;
3172: my @studentdata=();
3173: {
3174: my $studentfile = $r->dir_config('lonDaemons').
3175: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
3176: if ( open(my $fh,"<$studentfile") ) {
3177: @studentdata=<$fh>;
3178: close($fh);
3179: }
3180: }
3181: $ENV{'form.upfile'}=join('',@studentdata);
3182: }
3183:
3184: =pod
3185:
3186: =item * upfile_record_sep()
3187:
3188: Separate uploaded file into records
3189: returns array of records,
3190: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
3191:
3192: =cut
3193:
3194: sub upfile_record_sep {
3195: if ($ENV{'form.upfiletype'} eq 'xml') {
3196: } else {
3197: my @records;
3198: foreach my $line (split(/\n/,$ENV{'form.upfile'})) {
3199: if ($line=~/^\s*$/) { next; }
3200: push(@records,$line);
3201: }
3202: return @records;
3203: }
3204: }
3205:
3206: =pod
3207:
3208: =item * record_sep($record)
3209:
3210: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
3211:
3212: =cut
3213:
3214: sub record_sep {
3215: my $record=shift;
3216: my %components=();
3217: if ($ENV{'form.upfiletype'} eq 'xml') {
3218: } elsif ($ENV{'form.upfiletype'} eq 'space') {
3219: my $i=0;
3220: foreach (split(/\s+/,$record)) {
3221: my $field=$_;
3222: $field=~s/^(\"|\')//;
3223: $field=~s/(\"|\')$//;
3224: $components{$i}=$field;
3225: $i++;
3226: }
3227: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
3228: my $i=0;
3229: foreach (split(/\t/,$record)) {
3230: my $field=$_;
3231: $field=~s/^(\"|\')//;
3232: $field=~s/(\"|\')$//;
3233: $components{$i}=$field;
3234: $i++;
3235: }
3236: } else {
3237: my @allfields=split(/\,/,$record);
3238: my $i=0;
3239: my $j;
3240: for ($j=0;$j<=$#allfields;$j++) {
3241: my $field=$allfields[$j];
3242: if ($field=~/^\s*(\"|\')/) {
3243: my $delimiter=$1;
3244: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
3245: $j++;
3246: $field.=','.$allfields[$j];
3247: }
3248: $field=~s/^\s*$delimiter//;
3249: $field=~s/$delimiter\s*$//;
3250: }
3251: $components{$i}=$field;
3252: $i++;
3253: }
3254: }
3255: return %components;
3256: }
3257:
3258: ######################################################
3259: ######################################################
3260:
3261: =pod
3262:
3263: =item * upfile_select_html()
3264:
3265: Return HTML code to select a file from the users machine and specify
3266: the file type.
3267:
3268: =cut
3269:
3270: ######################################################
3271: ######################################################
3272: sub upfile_select_html {
3273: my %Types = (
3274: csv => &mt('CSV (comma separated values, spreadsheet)'),
3275: space => &mt('Space separated'),
3276: tab => &mt('Tabulator separated'),
3277: # xml => &mt('HTML/XML'),
3278: );
3279: my $Str = '<input type="file" name="upfile" size="50" />'.
3280: '<br />Type: <select name="upfiletype">';
3281: foreach my $type (sort(keys(%Types))) {
3282: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
3283: }
3284: $Str .= "</select>\n";
3285: return $Str;
3286: }
3287:
3288: ######################################################
3289: ######################################################
3290:
3291: =pod
3292:
3293: =item * csv_print_samples($r,$records)
3294:
3295: Prints a table of sample values from each column uploaded $r is an
3296: Apache Request ref, $records is an arrayref from
3297: &Apache::loncommon::upfile_record_sep
3298:
3299: =cut
3300:
3301: ######################################################
3302: ######################################################
3303: sub csv_print_samples {
3304: my ($r,$records) = @_;
3305: my (%sone,%stwo,%sthree);
3306: %sone=&record_sep($$records[0]);
3307: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3308: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3309: #
3310: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3311: foreach (sort({$a <=> $b} keys(%sone))) {
3312: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
3313: $r->print('</tr>');
3314: foreach my $hash (\%sone,\%stwo,\%sthree) {
3315: $r->print('<tr>');
3316: foreach (sort({$a <=> $b} keys(%sone))) {
3317: $r->print('<td>');
3318: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3319: $r->print('</td>');
3320: }
3321: $r->print('</tr>');
3322: }
3323: $r->print('</tr></table><br />'."\n");
3324: }
3325:
3326: ######################################################
3327: ######################################################
3328:
3329: =pod
3330:
3331: =item * csv_print_select_table($r,$records,$d)
3332:
3333: Prints a table to create associations between values and table columns.
3334:
3335: $r is an Apache Request ref,
3336: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3337: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3338:
3339: =cut
3340:
3341: ######################################################
3342: ######################################################
3343: sub csv_print_select_table {
3344: my ($r,$records,$d) = @_;
3345: my $i=0;my %sone;
3346: %sone=&record_sep($$records[0]);
3347: $r->print(&mt('Associate columns with student attributes.')."\n".
3348: '<table border="2"><tr>'.
3349: '<th>'.&mt('Attribute').'</th>'.
3350: '<th>'.&mt('Column').'</th></tr>'."\n");
3351: foreach (@$d) {
3352: my ($value,$display,$defaultcol)=@{ $_ };
3353: $r->print('<tr><td>'.$display.'</td>');
3354:
3355: $r->print('<td><select name=f'.$i.
3356: ' onchange="javascript:flip(this.form,'.$i.');">');
3357: $r->print('<option value="none"></option>');
3358: foreach (sort({$a <=> $b} keys(%sone))) {
3359: $r->print('<option value="'.$_.'"'.
3360: ($_ eq $defaultcol ? ' selected="selected" ' : '').
3361: '>Column '.($_+1).'</option>');
3362: }
3363: $r->print('</select></td></tr>'."\n");
3364: $i++;
3365: }
3366: $i--;
3367: return $i;
3368: }
3369:
3370: ######################################################
3371: ######################################################
3372:
3373: =pod
3374:
3375: =item * csv_samples_select_table($r,$records,$d)
3376:
3377: Prints a table of sample values from the upload and can make associate samples to internal names.
3378:
3379: $r is an Apache Request ref,
3380: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3381: $d is an array of 2 element arrays (internal name, displayed name)
3382:
3383: =cut
3384:
3385: ######################################################
3386: ######################################################
3387: sub csv_samples_select_table {
3388: my ($r,$records,$d) = @_;
3389: my %sone; my %stwo; my %sthree;
3390: my $i=0;
3391: #
3392: $r->print('<table border=2><tr><th>'.
3393: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3394: %sone=&record_sep($$records[0]);
3395: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3396: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3397: #
3398: foreach (sort keys %sone) {
3399: $r->print('<tr><td><select name="f'.$i.'"'.
3400: ' onchange="javascript:flip(this.form,'.$i.');">');
3401: foreach (@$d) {
3402: my ($value,$display,$defaultcol)=@{ $_ };
3403: $r->print('<option value="'.$value.'"'.
3404: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
3405: $display.'</option>');
3406: }
3407: $r->print('</select></td><td>');
3408: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3409: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3410: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3411: $r->print('</td></tr>');
3412: $i++;
3413: }
3414: $i--;
3415: return($i);
3416: }
3417:
3418: ######################################################
3419: ######################################################
3420:
3421: =pod
3422:
3423: =item clean_excel_name($name)
3424:
3425: Returns a replacement for $name which does not contain any illegal characters.
3426:
3427: =cut
3428:
3429: ######################################################
3430: ######################################################
3431: sub clean_excel_name {
3432: my ($name) = @_;
3433: $name =~ s/[:\*\?\/\\]//g;
3434: if (length($name) > 31) {
3435: $name = substr($name,0,31);
3436: }
3437: return $name;
3438: }
3439:
3440: =pod
3441:
3442: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3443:
3444: Returns either 1 or undef
3445:
3446: 1 if the part is to be hidden, undef if it is to be shown
3447:
3448: Arguments are:
3449:
3450: $id the id of the part to be checked
3451: $symb, optional the symb of the resource to check
3452: $udom, optional the domain of the user to check for
3453: $uname, optional the username of the user to check for
3454:
3455: =cut
3456:
3457: sub check_if_partid_hidden {
3458: my ($id,$symb,$udom,$uname) = @_;
3459: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3460: $symb,$udom,$uname);
3461: my $truth=1;
3462: #if the string starts with !, then the list is the list to show not hide
3463: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3464: my @hiddenlist=split(/,/,$hiddenparts);
3465: foreach my $checkid (@hiddenlist) {
3466: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3467: }
3468: return !$truth;
3469: }
3470:
3471:
3472: ############################################################
3473: ############################################################
3474:
3475: =pod
3476:
3477: =back
3478:
3479: =head1 cgi-bin script and graphing routines
3480:
3481: =over 4
3482:
3483: =item get_cgi_id
3484:
3485: Inputs: none
3486:
3487: Returns an id which can be used to pass environment variables
3488: to various cgi-bin scripts. These environment variables will
3489: be removed from the users environment after a given time by
3490: the routine &Apache::lonnet::transfer_profile_to_env.
3491:
3492: =cut
3493:
3494: ############################################################
3495: ############################################################
3496: my $uniq=0;
3497: sub get_cgi_id {
3498: $uniq=($uniq+1)%100000;
3499: return (time.'_'.$uniq);
3500: }
3501:
3502: ############################################################
3503: ############################################################
3504:
3505: =pod
3506:
3507: =item DrawBarGraph
3508:
3509: Facilitates the plotting of data in a (stacked) bar graph.
3510: Puts plot definition data into the users environment in order for
3511: graph.png to plot it. Returns an <img> tag for the plot.
3512: The bars on the plot are labeled '1','2',...,'n'.
3513:
3514: Inputs:
3515:
3516: =over 4
3517:
3518: =item $Title: string, the title of the plot
3519:
3520: =item $xlabel: string, text describing the X-axis of the plot
3521:
3522: =item $ylabel: string, text describing the Y-axis of the plot
3523:
3524: =item $Max: scalar, the maximum Y value to use in the plot
3525: If $Max is < any data point, the graph will not be rendered.
3526:
3527: =item $colors: array ref holding the colors to be used for the data sets when
3528: they are plotted. If undefined, default values will be used.
3529:
3530: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3531:
3532: =item @Values: An array of array references. Each array reference holds data
3533: to be plotted in a stacked bar chart.
3534:
3535: =item If the final element of @Values is a hash reference the key/value
3536: pairs will be added to the graph definition.
3537:
3538: =back
3539:
3540: Returns:
3541:
3542: An <img> tag which references graph.png and the appropriate identifying
3543: information for the plot.
3544:
3545: =cut
3546:
3547: ############################################################
3548: ############################################################
3549: sub DrawBarGraph {
3550: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3551: #
3552: if (! defined($colors)) {
3553: $colors = ['#33ff00',
3554: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3555: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3556: ];
3557: }
3558: my $extra_settings = {};
3559: if (ref($Values[-1]) eq 'HASH') {
3560: $extra_settings = pop(@Values);
3561: }
3562: #
3563: my $identifier = &get_cgi_id();
3564: my $id = 'cgi.'.$identifier;
3565: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3566: return '';
3567: }
3568: #
3569: my @Labels;
3570: if (defined($labels)) {
3571: @Labels = @$labels;
3572: } else {
3573: for (my $i=0;$i<@{$Values[0]};$i++) {
3574: push (@Labels,$i+1);
3575: }
3576: }
3577: #
3578: my $NumBars = scalar(@{$Values[0]});
3579: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
3580: my %ValuesHash;
3581: my $NumSets=1;
3582: foreach my $array (@Values) {
3583: next if (! ref($array));
3584: $ValuesHash{$id.'.data.'.$NumSets++} =
3585: join(',',@$array);
3586: }
3587: #
3588: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3589: if ($NumBars < 3) {
3590: $width = 120+$NumBars*32;
3591: $xskip = 1;
3592: $bar_width = 30;
3593: } elsif ($NumBars < 5) {
3594: $width = 120+$NumBars*20;
3595: $xskip = 1;
3596: $bar_width = 20;
3597: } elsif ($NumBars < 10) {
3598: $width = 120+$NumBars*15;
3599: $xskip = 1;
3600: $bar_width = 15;
3601: } elsif ($NumBars <= 25) {
3602: $width = 120+$NumBars*11;
3603: $xskip = 5;
3604: $bar_width = 8;
3605: } elsif ($NumBars <= 50) {
3606: $width = 120+$NumBars*8;
3607: $xskip = 5;
3608: $bar_width = 4;
3609: } else {
3610: $width = 120+$NumBars*8;
3611: $xskip = 5;
3612: $bar_width = 4;
3613: }
3614: #
3615: $Max = 1 if ($Max < 1);
3616: if ( int($Max) < $Max ) {
3617: $Max++;
3618: $Max = int($Max);
3619: }
3620: $Title = '' if (! defined($Title));
3621: $xlabel = '' if (! defined($xlabel));
3622: $ylabel = '' if (! defined($ylabel));
3623: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3624: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3625: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3626: $ValuesHash{$id.'.y_max_value'} = $Max;
3627: $ValuesHash{$id.'.NumBars'} = $NumBars;
3628: $ValuesHash{$id.'.NumSets'} = $NumSets;
3629: $ValuesHash{$id.'.PlotType'} = 'bar';
3630: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3631: $ValuesHash{$id.'.height'} = $height;
3632: $ValuesHash{$id.'.width'} = $width;
3633: $ValuesHash{$id.'.xskip'} = $xskip;
3634: $ValuesHash{$id.'.bar_width'} = $bar_width;
3635: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3636: #
3637: # Deal with other parameters
3638: while (my ($key,$value) = each(%$extra_settings)) {
3639: $ValuesHash{$id.'.'.$key} = $value;
3640: }
3641: #
3642: &Apache::lonnet::appenv(%ValuesHash);
3643: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3644: }
3645:
3646: ############################################################
3647: ############################################################
3648:
3649: =pod
3650:
3651: =item DrawXYGraph
3652:
3653: Facilitates the plotting of data in an XY graph.
3654: Puts plot definition data into the users environment in order for
3655: graph.png to plot it. Returns an <img> tag for the plot.
3656:
3657: Inputs:
3658:
3659: =over 4
3660:
3661: =item $Title: string, the title of the plot
3662:
3663: =item $xlabel: string, text describing the X-axis of the plot
3664:
3665: =item $ylabel: string, text describing the Y-axis of the plot
3666:
3667: =item $Max: scalar, the maximum Y value to use in the plot
3668: If $Max is < any data point, the graph will not be rendered.
3669:
3670: =item $colors: Array ref containing the hex color codes for the data to be
3671: plotted in. If undefined, default values will be used.
3672:
3673: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3674:
3675: =item $Ydata: Array ref containing Array refs.
3676: Each of the contained arrays will be plotted as a separate curve.
3677:
3678: =item %Values: hash indicating or overriding any default values which are
3679: passed to graph.png.
3680: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3681:
3682: =back
3683:
3684: Returns:
3685:
3686: An <img> tag which references graph.png and the appropriate identifying
3687: information for the plot.
3688:
3689: =cut
3690:
3691: ############################################################
3692: ############################################################
3693: sub DrawXYGraph {
3694: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3695: #
3696: # Create the identifier for the graph
3697: my $identifier = &get_cgi_id();
3698: my $id = 'cgi.'.$identifier;
3699: #
3700: $Title = '' if (! defined($Title));
3701: $xlabel = '' if (! defined($xlabel));
3702: $ylabel = '' if (! defined($ylabel));
3703: my %ValuesHash =
3704: (
3705: $id.'.title' => &Apache::lonnet::escape($Title),
3706: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3707: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3708: $id.'.y_max_value'=> $Max,
3709: $id.'.labels' => join(',',@$Xlabels),
3710: $id.'.PlotType' => 'XY',
3711: );
3712: #
3713: if (defined($colors) && ref($colors) eq 'ARRAY') {
3714: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3715: }
3716: #
3717: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3718: return '';
3719: }
3720: my $NumSets=1;
3721: foreach my $array (@{$Ydata}){
3722: next if (! ref($array));
3723: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3724: }
3725: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3726: #
3727: # Deal with other parameters
3728: while (my ($key,$value) = each(%Values)) {
3729: $ValuesHash{$id.'.'.$key} = $value;
3730: }
3731: #
3732: &Apache::lonnet::appenv(%ValuesHash);
3733: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3734: }
3735:
3736: ############################################################
3737: ############################################################
3738:
3739: =pod
3740:
3741: =item DrawXYYGraph
3742:
3743: Facilitates the plotting of data in an XY graph with two Y axes.
3744: Puts plot definition data into the users environment in order for
3745: graph.png to plot it. Returns an <img> tag for the plot.
3746:
3747: Inputs:
3748:
3749: =over 4
3750:
3751: =item $Title: string, the title of the plot
3752:
3753: =item $xlabel: string, text describing the X-axis of the plot
3754:
3755: =item $ylabel: string, text describing the Y-axis of the plot
3756:
3757: =item $colors: Array ref containing the hex color codes for the data to be
3758: plotted in. If undefined, default values will be used.
3759:
3760: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3761:
3762: =item $Ydata1: The first data set
3763:
3764: =item $Min1: The minimum value of the left Y-axis
3765:
3766: =item $Max1: The maximum value of the left Y-axis
3767:
3768: =item $Ydata2: The second data set
3769:
3770: =item $Min2: The minimum value of the right Y-axis
3771:
3772: =item $Max2: The maximum value of the left Y-axis
3773:
3774: =item %Values: hash indicating or overriding any default values which are
3775: passed to graph.png.
3776: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3777:
3778: =back
3779:
3780: Returns:
3781:
3782: An <img> tag which references graph.png and the appropriate identifying
3783: information for the plot.
3784:
3785: =cut
3786:
3787: ############################################################
3788: ############################################################
3789: sub DrawXYYGraph {
3790: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3791: $Ydata2,$Min2,$Max2,%Values)=@_;
3792: #
3793: # Create the identifier for the graph
3794: my $identifier = &get_cgi_id();
3795: my $id = 'cgi.'.$identifier;
3796: #
3797: $Title = '' if (! defined($Title));
3798: $xlabel = '' if (! defined($xlabel));
3799: $ylabel = '' if (! defined($ylabel));
3800: my %ValuesHash =
3801: (
3802: $id.'.title' => &Apache::lonnet::escape($Title),
3803: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3804: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3805: $id.'.labels' => join(',',@$Xlabels),
3806: $id.'.PlotType' => 'XY',
3807: $id.'.NumSets' => 2,
3808: $id.'.two_axes' => 1,
3809: $id.'.y1_max_value' => $Max1,
3810: $id.'.y1_min_value' => $Min1,
3811: $id.'.y2_max_value' => $Max2,
3812: $id.'.y2_min_value' => $Min2,
3813: );
3814: #
3815: if (defined($colors) && ref($colors) eq 'ARRAY') {
3816: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3817: }
3818: #
3819: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3820: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3821: return '';
3822: }
3823: my $NumSets=1;
3824: foreach my $array ($Ydata1,$Ydata2){
3825: next if (! ref($array));
3826: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3827: }
3828: #
3829: # Deal with other parameters
3830: while (my ($key,$value) = each(%Values)) {
3831: $ValuesHash{$id.'.'.$key} = $value;
3832: }
3833: #
3834: &Apache::lonnet::appenv(%ValuesHash);
3835: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3836: }
3837:
3838: ############################################################
3839: ############################################################
3840:
3841: =pod
3842:
3843: =back
3844:
3845: =head1 Statistics helper routines?
3846:
3847: Bad place for them but what the hell.
3848:
3849: =over 4
3850:
3851: =item &chartlink
3852:
3853: Returns a link to the chart for a specific student.
3854:
3855: Inputs:
3856:
3857: =over 4
3858:
3859: =item $linktext: The text of the link
3860:
3861: =item $sname: The students username
3862:
3863: =item $sdomain: The students domain
3864:
3865: =back
3866:
3867: =back
3868:
3869: =cut
3870:
3871: ############################################################
3872: ############################################################
3873: sub chartlink {
3874: my ($linktext, $sname, $sdomain) = @_;
3875: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3876: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3877: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3878: '">'.$linktext.'</a>';
3879: }
3880:
3881: #######################################################
3882: #######################################################
3883:
3884: =pod
3885:
3886: =head1 Course Environment Routines
3887:
3888: =over 4
3889:
3890: =item &restore_course_settings
3891:
3892: =item &store_course_settings
3893:
3894: Restores/Store indicated form parameters from the course environment.
3895: Will not overwrite existing values of the form parameters.
3896:
3897: Inputs:
3898: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3899:
3900: a hash ref describing the data to be stored. For example:
3901:
3902: %Save_Parameters = ('Status' => 'scalar',
3903: 'chartoutputmode' => 'scalar',
3904: 'chartoutputdata' => 'scalar',
3905: 'Section' => 'array',
3906: 'StudentData' => 'array',
3907: 'Maps' => 'array');
3908:
3909: Returns: both routines return nothing
3910:
3911: =cut
3912:
3913: #######################################################
3914: #######################################################
3915: sub store_course_settings {
3916: # save to the environment
3917: # appenv the same items, just to be safe
3918: my $courseid = $ENV{'request.course.id'};
3919: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3920: my ($prefix,$Settings) = @_;
3921: my %SaveHash;
3922: my %AppHash;
3923: while (my ($setting,$type) = each(%$Settings)) {
3924: my $basename = 'internal.'.$prefix.'.'.$setting;
3925: my $envname = 'course.'.$courseid.'.'.$basename;
3926: if (exists($ENV{'form.'.$setting})) {
3927: # Save this value away
3928: if ($type eq 'scalar' &&
3929: (! exists($ENV{$envname}) ||
3930: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3931: $SaveHash{$basename} = $ENV{'form.'.$setting};
3932: $AppHash{$envname} = $ENV{'form.'.$setting};
3933: } elsif ($type eq 'array') {
3934: my $stored_form;
3935: if (ref($ENV{'form.'.$setting})) {
3936: $stored_form = join(',',
3937: map {
3938: &Apache::lonnet::escape($_);
3939: } sort(@{$ENV{'form.'.$setting}}));
3940: } else {
3941: $stored_form =
3942: &Apache::lonnet::escape($ENV{'form.'.$setting});
3943: }
3944: # Determine if the array contents are the same.
3945: if ($stored_form ne $ENV{$envname}) {
3946: $SaveHash{$basename} = $stored_form;
3947: $AppHash{$envname} = $stored_form;
3948: }
3949: }
3950: }
3951: }
3952: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3953: $coursedom,
3954: $ENV{'course.'.$courseid.'.num'});
3955: if ($put_result !~ /^(ok|delayed)/) {
3956: &Apache::lonnet::logthis('unable to save form parameters, '.
3957: 'got error:'.$put_result);
3958: }
3959: # Make sure these settings stick around in this session, too
3960: &Apache::lonnet::appenv(%AppHash);
3961: return;
3962: }
3963:
3964: sub restore_course_settings {
3965: my $courseid = $ENV{'request.course.id'};
3966: my ($prefix,$Settings) = @_;
3967: while (my ($setting,$type) = each(%$Settings)) {
3968: next if (exists($ENV{'form.'.$setting}));
3969: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3970: '.'.$setting;
3971: if (exists($ENV{$envname})) {
3972: if ($type eq 'scalar') {
3973: $ENV{'form.'.$setting} = $ENV{$envname};
3974: } elsif ($type eq 'array') {
3975: $ENV{'form.'.$setting} = [
3976: map {
3977: &Apache::lonnet::unescape($_);
3978: } split(',',$ENV{$envname})
3979: ];
3980: }
3981: }
3982: }
3983: }
3984:
3985: ############################################################
3986: ############################################################
3987:
3988: sub propath {
3989: my ($udom,$uname)=@_;
3990: $udom=~s/\W//g;
3991: $uname=~s/\W//g;
3992: my $subdir=$uname.'__';
3993: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3994: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3995: return $proname;
3996: }
3997:
3998: sub icon {
3999: my ($file)=@_;
4000: my $curfext = (split(/\./,$file))[-1];
4001: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
4002: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
4003: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
4004: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
4005: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4006: $curfext.".gif") {
4007: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4008: $curfext.".gif";
4009: }
4010: }
4011: return &lonhttpdurl($iconname);
4012: }
4013:
4014: sub lonhttpdurl {
4015: my ($url)=@_;
4016: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
4017: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
4018: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
4019: }
4020:
4021: sub connection_aborted {
4022: my ($r)=@_;
4023: $r->print(" ");$r->rflush();
4024: my $c = $r->connection;
4025: return $c->aborted();
4026: }
4027:
4028: # Escapes strings that may have embedded 's that will be put into
4029: # strings as 'strings'.
4030: sub escape_single {
4031: my ($input) = @_;
4032: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
4033: $input =~ s/\'/\\\'/g; # Esacpe the 's....
4034: return $input;
4035: }
4036:
4037: # Same as escape_single, but escape's "'s This
4038: # can be used for "strings"
4039: sub escape_double {
4040: my ($input) = @_;
4041: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
4042: $input =~ s/\"/\\\"/g; # Esacpe the "s....
4043: return $input;
4044: }
4045:
4046: # Escapes the last element of a full URL.
4047: sub escape_url {
4048: my ($url) = @_;
4049: my @urlslices = split(/\//, $url,-1);
4050: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
4051: return join('/',@urlslices).'/'.$lastitem;
4052: }
4053: =pod
4054:
4055: =back
4056:
4057: =cut
4058:
4059: 1;
4060: __END__;
4061:
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