1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.37 2003/12/29 21:17:00 www 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: ######################################################################
30:
31: =pod
32:
33: =head1 NAME
34:
35: Apache::lonhtmlcommon - routines to do common html things
36:
37: =head1 SYNOPSIS
38:
39: Referenced by other mod_perl Apache modules.
40:
41: =head1 INTRODUCTION
42:
43: lonhtmlcommon is a collection of subroutines used to present information
44: in a consistent html format, or provide other functionality related to
45: html.
46:
47: =head2 General Subroutines
48:
49: =over 4
50:
51: =cut
52:
53: ######################################################################
54: ######################################################################
55:
56: package Apache::lonhtmlcommon;
57:
58: use Time::Local;
59: use Apache::lonlocal;
60: use strict;
61:
62:
63: ##############################################
64: ##############################################
65:
66: =pod
67:
68: =item textbox
69:
70: =cut
71:
72: ##############################################
73: ##############################################
74: sub textbox {
75: my ($name,$value,$size,$special) = @_;
76: $size = 40 if (! defined($size));
77: my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
78: 'value="'.$value.'" '.$special.' />';
79: return $Str;
80: }
81:
82: ##############################################
83: ##############################################
84:
85: =pod
86:
87: =item checkbox
88:
89: =cut
90:
91: ##############################################
92: ##############################################
93: sub checkbox {
94: my ($name) = @_;
95: my $Str = '<input type="checkbox" name="'.$name.'" />';
96: return $Str;
97: }
98:
99:
100:
101: ##############################################
102: ##############################################
103:
104: =pod
105:
106: =item &date_setter
107:
108: &date_setter returns html and javascript for a compact date-setting form.
109: To retrieve values from it, use &get_date_from_form().
110:
111: Inputs
112:
113: =over 4
114:
115: =item $dname
116:
117: The name to prepend to the form elements.
118: The form elements defined will be dname_year, dname_month, dname_day,
119: dname_hour, dname_min, and dname_sec.
120:
121: =item $currentvalue
122:
123: The current setting for this time parameter. A unix format time
124: (time in seconds since the beginning of Jan 1st, 1970, GMT.
125: An undefined value is taken to indicate the value is the current time.
126: Also, to be explicit, a value of 'now' also indicates the current time.
127:
128: =item $special
129:
130: Additional html/javascript to be associated with each element in
131: the date_setter. See lonparmset for example usage.
132:
133: =back
134:
135: Bugs
136:
137: The method used to restrict user input will fail in the year 2400.
138:
139: =cut
140:
141: ##############################################
142: ##############################################
143: sub date_setter {
144: my ($formname,$dname,$currentvalue,$special) = @_;
145: if (! defined($currentvalue) || $currentvalue eq 'now') {
146: $currentvalue = time;
147: }
148: # other potentially useful values: wkday,yrday,is_daylight_savings
149: my ($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) =
150: localtime($currentvalue);
151: $year += 1900;
152: my $result = "\n<!-- $dname date setting form -->\n";
153: $result .= <<ENDJS;
154: <script language="Javascript">
155: function $dname\_checkday() {
156: var day = document.$formname.$dname\_day.value;
157: var month = document.$formname.$dname\_month.value;
158: var year = document.$formname.$dname\_year.value;
159: var valid = true;
160: if (day < 1) {
161: document.$formname.$dname\_day.value = 1;
162: }
163: if (day > 31) {
164: document.$formname.$dname\_day.value = 31;
165: }
166: if ((month == 1) || (month == 3) || (month == 5) ||
167: (month == 7) || (month == 8) || (month == 10) ||
168: (month == 12)) {
169: if (day > 31) {
170: document.$formname.$dname\_day.value = 31;
171: day = 31;
172: }
173: } else if (month == 2 ) {
174: if ((year % 4 == 0) && (year % 100 != 0)) {
175: if (day > 29) {
176: document.$formname.$dname\_day.value = 29;
177: }
178: } else if (day > 29) {
179: document.$formname.$dname\_day.value = 28;
180: }
181: } else if (day > 30) {
182: document.$formname.$dname\_day.value = 30;
183: }
184: }
185:
186: function $dname\_opencalendar() {
187: var calwin=window.open(
188: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
189: document.$formname.$dname\_month.value+"&year="+
190: document.$formname.$dname\_year.value,
191: "LONCAPAcal",
192: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
193:
194: }
195: </script>
196: ENDJS
197: $result .= " <nobr><select name=\"$dname\_month\" ".$special.' '.
198: "onChange=\"javascript:$dname\_checkday()\" >\n";
199: my @Months = qw/January February March April May June
200: July August September October November December/;
201: # Pad @Months with a bogus value to make indexing easier
202: unshift(@Months,'If you can read this an error occurred');
203: for(my $m = 1;$m <=$#Months;$m++) {
204: $result .= " <option value=\"$m\" ";
205: $result .= "selected " if ($m-1 == $month);
206: $result .= "> ".&mt($Months[$m])." </option>\n";
207: }
208: $result .= " </select>\n";
209: $result .= " <input type=\"text\" name=\"$dname\_day\" ".
210: "value=\"$mday\" size=\"3\" ".$special.' '.
211: "onChange=\"javascript:$dname\_checkday()\" />\n";
212: $result .= " <input type=\"year\" name=\"$dname\_year\" ".
213: "value=\"$year\" size=\"5\" ".$special.' '.
214: "onChange=\"javascript:$dname\_checkday()\" />\n";
215: $result .= " ";
216: $result .= " <select name=\"$dname\_hour\" ".$special." >\n";
217: for (my $h = 0;$h<24;$h++) {
218: $result .= " <option value=\"$h\" ";
219: $result .= "selected " if ($hour == $h);
220: $result .= "> ";
221: my $timest='';
222: if ($h == 0) {
223: $timest .= "12 am";
224: } elsif($h == 12) {
225: $timest .= "12 noon";
226: } elsif($h < 12) {
227: $timest .= "$h am";
228: } else {
229: $timest .= $h-12 ." pm";
230: }
231: $timest=&mt($timest);
232: $result .= $timest." </option>\n";
233: }
234: $result .= " </select>\n";
235: $result .= " <input type=\"text\" name=\"$dname\_minute\" ".$special.' '.
236: "value=\"$min\" size=\"3\" /> m\n";
237: $result .= " <input type=\"text\" name=\"$dname\_second\" ".$special.' '.
238: "value=\"$sec\" size=\"3\" /> s\n";
239: $result .= "<a href=\"javascript:$dname\_opencalendar()\">".
240: &mt('Select Date')."</a></nobr>\n<!-- end $dname date setting form -->\n";
241: return $result;
242: }
243:
244: ##############################################
245: ##############################################
246:
247: =pod
248:
249: =item &get_date_from_form
250:
251: get_date_from_form retrieves the date specified in an &date_setter form.
252:
253: Inputs:
254:
255: =over 4
256:
257: =item $dname
258:
259: The name passed to &datesetter, which prefixes the form elements.
260:
261: =item $defaulttime
262:
263: The unix time to use as the default in case of poor inputs.
264:
265: =back
266:
267: Returns: Unix time represented in the form.
268:
269: =cut
270:
271: ##############################################
272: ##############################################
273: sub get_date_from_form {
274: my ($dname) = @_;
275: my ($sec,$min,$hour,$day,$month,$year);
276: #
277: if (defined($ENV{'form.'.$dname.'_second'})) {
278: my $tmpsec = $ENV{'form.'.$dname.'_second'};
279: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
280: $sec = $tmpsec;
281: }
282: }
283: if (defined($ENV{'form.'.$dname.'_minute'})) {
284: my $tmpmin = $ENV{'form.'.$dname.'_minute'};
285: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
286: $min = $tmpmin;
287: }
288: }
289: if (defined($ENV{'form.'.$dname.'_hour'})) {
290: my $tmphour = $ENV{'form.'.$dname.'_hour'};
291: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
292: $hour = $tmphour;
293: }
294: }
295: if (defined($ENV{'form.'.$dname.'_day'})) {
296: my $tmpday = $ENV{'form.'.$dname.'_day'};
297: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
298: $day = $tmpday;
299: }
300: }
301: if (defined($ENV{'form.'.$dname.'_month'})) {
302: my $tmpmonth = $ENV{'form.'.$dname.'_month'};
303: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
304: $month = $tmpmonth - 1;
305: }
306: }
307: if (defined($ENV{'form.'.$dname.'_year'})) {
308: my $tmpyear = $ENV{'form.'.$dname.'_year'};
309: if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
310: $year = $tmpyear - 1900;
311: }
312: }
313: if (($year<70) || ($year>137)) { return undef; }
314: if (defined($sec) && defined($min) && defined($hour) &&
315: defined($day) && defined($month) && defined($year) &&
316: eval(&timelocal($sec,$min,$hour,$day,$month,$year))) {
317: return &timelocal($sec,$min,$hour,$day,$month,$year);
318: } else {
319: return undef;
320: }
321: }
322:
323: ##############################################
324: ##############################################
325:
326: =pod
327:
328: =item &pjump_javascript_definition()
329:
330: Returns javascript defining the 'pjump' function, which opens up a
331: parameter setting wizard.
332:
333: =cut
334:
335: ##############################################
336: ##############################################
337: sub pjump_javascript_definition {
338: my $Str = <<END;
339: function pjump(type,dis,value,marker,ret,call) {
340: parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
341: +"&value="+escape(value)+"&marker="+escape(marker)
342: +"&return="+escape(ret)
343: +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
344: "height=350,width=350,scrollbars=no,menubar=no");
345: }
346: END
347: return $Str;
348: }
349:
350: ##############################################
351: ##############################################
352:
353: =pod
354:
355: =item &javascript_nothing()
356:
357: Return an appropriate null for the users browser. This is used
358: as the first arguement for window.open calls when you want a blank
359: window that you can then write to.
360:
361: =cut
362:
363: ##############################################
364: ##############################################
365: sub javascript_nothing {
366: # mozilla and other browsers work with "''", but IE on mac does not.
367: my $nothing = "''";
368: my $user_browser;
369: my $user_os;
370: $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
371: $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
372: if (! defined($user_browser) || ! defined($user_os)) {
373: (undef,$user_browser,undef,undef,undef,$user_os) =
374: &Apache::loncommon::decode_user_agent();
375: }
376: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
377: $nothing = "'javascript:void(0);'";
378: }
379: return $nothing;
380: }
381:
382:
383: ##############################################
384: ##############################################
385:
386: =pod
387:
388: =item &StatusOptions()
389:
390: Returns html for a selection box which allows the user to choose the
391: enrollment status of students. The selection box name is 'Status'.
392:
393: Inputs:
394:
395: $status: the currently selected status. If undefined the value of
396: $ENV{'form.Status'} is taken. If that is undefined, a value of 'Active'
397: is used.
398:
399: $formname: The name of the form. If defined the onchange attribute of
400: the selection box is set to document.$formname.submit().
401:
402: $size: the size (number of lines) of the selection box.
403:
404: $onchange: javascript to use when the value is changed. Enclosed in
405: double quotes, ""s, not single quotes.
406:
407: Returns: a perl string as described.
408:
409: =cut
410:
411: ##############################################
412: ##############################################
413: sub StatusOptions {
414: my ($status, $formName,$size,$onchange)=@_;
415: $size = 1 if (!defined($size));
416: if (! defined($status)) {
417: $status = 'Active';
418: $status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
419: }
420:
421: my $OpSel1 = '';
422: my $OpSel2 = '';
423: my $OpSel3 = '';
424:
425: if($status eq 'Any') { $OpSel3 = ' selected'; }
426: elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; }
427: else { $OpSel1 = ' selected'; }
428:
429: my $Str = '';
430: $Str .= '<select name="Status"';
431: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
432: $Str .= ' onchange="document.'.$formName.'.submit()"';
433: }
434: if (defined($onchange)) {
435: $Str .= ' onchange="'.$onchange.'"';
436: }
437: $Str .= ' size="'.$size.'" ';
438: $Str .= '>'."\n";
439: $Str .= '<option value="Active" '.$OpSel1.'>'.
440: &mt('Currently Enrolled').'</option>'."\n";
441: $Str .= '<option value="Expired" '.$OpSel2.'>'.
442: &mt('Previously Enrolled').'</option>'."\n";
443: $Str .= '<option value="Any" '.$OpSel3.'>'.
444: &mt('Any Enrollment Status').'</option>'."\n";
445: $Str .= '</select>'."\n";
446: }
447:
448:
449: ########################################################
450: ########################################################
451:
452: =pod
453:
454: =item &MultipleSectionSelect()
455:
456: Inputs:
457:
458: =over 4
459:
460: =item $sections A references to an array containing the names of all the
461: sections used in a class.
462:
463: =item $selectedSections A reference to an array containing the names of the
464: currently selected sections.
465:
466: =back
467:
468: Returns: a string containing HTML for a multiple select box for
469: selecting sections of a course.
470:
471: The form element name is 'Section'. @$sections is sorted prior to output.
472:
473: =cut
474:
475: ########################################################
476: ########################################################
477: sub MultipleSectionSelect {
478: my ($sections,$selectedSections)=@_;
479:
480: my $Str = '';
481: $Str .= '<select name="Section" multiple="true" size="4">'."\n";
482:
483: foreach (sort @$sections) {
484: $Str .= '<option';
485: foreach my $selected (@$selectedSections) {
486: if($_ eq $selected) {
487: $Str .= ' selected=""';
488: }
489: }
490: $Str .= '>'.$_.'</option>'."\n";
491: }
492: $Str .= '</select>'."\n";
493:
494: return $Str;
495: }
496:
497: ########################################################
498: ########################################################
499:
500: =pod
501:
502: =item &Title()
503:
504: Inputs: $pageName a string containing the name of the page to be sent
505: to &Apache::loncommon::bodytag.
506:
507: Returns: string containing being <html> and complete <head> and <title>
508: as well as a <script> to focus the current window and change its width
509: and height to 500. Why? I do not know. If you find out, please update
510: this documentation.
511:
512: =cut
513:
514: ########################################################
515: ########################################################
516: sub Title {
517: my ($pageName)=@_;
518:
519: my $Str = '';
520:
521: $Str .= '<html><head><title>'.$pageName.'</title></head>'."\n";
522: $Str .= &Apache::loncommon::bodytag($pageName)."\n";
523: $Str .= '<script>window.focus(); window.width=500;window.height=500;';
524: $Str .= '</script>'."\n";
525:
526: return $Str;
527: }
528:
529: ########################################################
530: ########################################################
531:
532: =pod
533:
534: =item &CreateHeadings()
535:
536: This function generates the column headings for the chart.
537:
538: =over 4
539:
540: Inputs: $CacheData, $keyID, $headings, $spacePadding
541:
542: $CacheData: pointer to a hash tied to the cached data database
543:
544: $keyID: a pointer to an array containing the names of the data
545: held in a column and is used as part of a key into $CacheData
546:
547: $headings: The names of the headings for the student information
548:
549: $spacePadding: The spaces to go between columns
550:
551: Output: $Str
552:
553: $Str: A formatted string of the table column headings.
554:
555: =back
556:
557: =cut
558:
559: ########################################################
560: ########################################################
561: sub CreateHeadings {
562: my ($data,$keyID,$headings,$displayString,$format)=@_;
563: my $Str='';
564: my $formatting = '';
565:
566: for(my $index=0; $index<(scalar @$headings); $index++) {
567: my $currentHeading=$headings->[$index];
568: if($format eq 'preformatted') {
569: my @dataLength=split(//,$currentHeading);
570: my $length=scalar @dataLength;
571: $formatting = (' 'x
572: ($data->{$keyID->[$index].':columnWidth'}-$length));
573: }
574: my $linkdata=$keyID->[$index];
575:
576: my $tempString = $displayString;
577: $tempString =~ s/LINKDATA/$linkdata/;
578: $tempString =~ s/DISPLAYDATA/$currentHeading/;
579: $tempString =~ s/FORMATTING/$formatting/;
580:
581: $Str .= $tempString;
582: }
583:
584: return $Str;
585: }
586:
587: ########################################################
588: ########################################################
589:
590: =pod
591:
592: =item &FormatStudentInformation()
593:
594: This function produces a formatted string of the student\'s information:
595: username, domain, section, full name, and PID.
596:
597: =over 4
598:
599: Input: $cache, $name, $keyID, $spacePadding
600:
601: $cache: This is a pointer to a hash that is tied to the cached data
602:
603: $name: The name and domain of the current student in name:domain format
604:
605: $keyID: A pointer to an array holding the names used to
606:
607: remove data from the hash. They represent the name of the data to be removed.
608:
609: $spacePadding: Extra spaces that represent the space between columns
610:
611: Output: $Str
612:
613: $Str: Formatted string.
614:
615: =back
616:
617: =cut
618:
619: ########################################################
620: ########################################################
621: sub FormatStudentInformation {
622: my ($data,$name,$keyID,$displayString,$format)=@_;
623: my $Str='';
624: my $currentColumn;
625:
626: for(my $index=0; $index<(scalar @$keyID); $index++) {
627: $currentColumn=$data->{$name.':'.$keyID->[$index]};
628:
629: if($format eq 'preformatted') {
630: my @dataLength=split(//,$currentColumn);
631: my $length=scalar @dataLength;
632: $currentColumn.= (' 'x
633: ($data->{$keyID->[$index].':columnWidth'}-$length));
634: }
635:
636: my $tempString = $displayString;
637: $tempString =~ s/DISPLAYDATA/$currentColumn/;
638:
639: $Str .= $tempString;
640: }
641:
642: return $Str;
643: }
644:
645: ########################################################
646: ########################################################
647:
648: =pod
649:
650: =item Progess Window Handling Routines
651:
652: These routines handle the creation, update, increment, and closure of
653: progress windows. The progress window reports to the user the number
654: of items completed and an estimate of the time required to complete the rest.
655:
656: =over 4
657:
658:
659: =item &Create_PrgWin
660:
661: Writes javascript to the client to open a progress window and returns a
662: data structure used for bookkeeping.
663:
664: Inputs
665:
666: =over 4
667:
668: =item $r Apache request
669:
670: =item $title The title of the progress window
671:
672: =item $heading A description (usually 1 line) of the process being initiated.
673:
674: =item $number_to_do The total number of items being processed.
675:
676: =back
677:
678: Returns a hash containing the progress state data structure.
679:
680:
681: =item &Update_PrgWin
682:
683: Updates the text in the progress indicator. Does not increment the count.
684: See &Increment_PrgWin.
685:
686: Inputs:
687:
688: =over 4
689:
690: =item $r Apache request
691:
692: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
693:
694: =item $displaystring The string to write to the status indicator
695:
696: =back
697:
698: Returns: none
699:
700:
701: =item Increment_PrgWin
702:
703: Increment the count of items completed for the progress window by 1.
704:
705: Inputs:
706:
707: =over 4
708:
709: =item $r Apache request
710:
711: =item $prog_state Pointer to the data structure returned by Create_PrgWin
712:
713: =item $extraInfo A description of the items being iterated over. Typically
714: 'student'.
715:
716: =back
717:
718: Returns: none
719:
720:
721: =item Close_PrgWin
722:
723: Closes the progress window.
724:
725: Inputs:
726:
727: =over 4
728:
729: =item $r Apache request
730:
731: =item $prog_state Pointer to the data structure returned by Create_PrgWin
732:
733: =back
734:
735: Returns: none
736:
737: =back
738:
739: =cut
740:
741: ########################################################
742: ########################################################
743:
744: # Create progress
745: sub Create_PrgWin {
746: my ($r, $title, $heading, $number_to_do)=@_;
747: $r->print('<script>'.
748: "popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
749: "popwin.document.writeln(\'<html><head><title>$title</title></head>".
750: "<body bgcolor=\"#88DDFF\">".
751: "<h4>$heading</h4>".
752: "<form name=popremain>".
753: '<input type="text" size="55" name="remaining" value="'.
754: &mt('Starting').'"></form>'.
755: "</body></html>\');".
756: "popwin.document.close();".
757: "</script>");
758:
759: my %prog_state;
760: $prog_state{'done'}=0;
761: $prog_state{'firststart'}=&Time::HiRes::time();
762: $prog_state{'laststart'}=&Time::HiRes::time();
763: $prog_state{'max'}=$number_to_do;
764:
765: $r->rflush();
766: return %prog_state;
767: }
768:
769: # update progress
770: sub Update_PrgWin {
771: my ($r,$prog_state,$displayString)=@_;
772: $r->print('<script>popwin.document.popremain.remaining.value="'.
773: $displayString.'";</script>');
774: $$prog_state{'laststart'}=&Time::HiRes::time();
775: $r->rflush();
776: }
777:
778: # increment progress state
779: sub Increment_PrgWin {
780: my ($r,$prog_state,$extraInfo)=@_;
781: $$prog_state{'done'}++;
782: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
783: $$prog_state{'done'} *
784: ($$prog_state{'max'}-$$prog_state{'done'});
785: $time_est = int($time_est);
786: if (int ($time_est/60) > 0) {
787: my $min = int($time_est/60);
788: my $sec = $time_est % 60;
789: $time_est = $min.' '.&mt('minutes');
790: if ($min < 10) {
791: if ($sec > 1) {
792: $time_est.= ', '.$sec.' '.&mt('seconds');
793: } elsif ($sec > 0) {
794: $time_est.= ', '.$sec.' '.&mt('second');
795: }
796: }
797: } else {
798: $time_est .= ' '.&mt('seconds');
799: }
800: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
801: if ($lasttime > 9) {
802: $lasttime = int($lasttime);
803: } elsif ($lasttime < 0.01) {
804: $lasttime = 0;
805: } else {
806: $lasttime = sprintf("%3.2f",$lasttime);
807: }
808: if ($lasttime == 1) {
809: $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
810: } else {
811: $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
812: }
813: #
814: my $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
815: my $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
816: if (! defined($user_browser) || ! defined($user_os)) {
817: (undef,$user_browser,undef,undef,undef,$user_os) =
818: &Apache::loncommon::decode_user_agent();
819: }
820: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
821: $lasttime = '';
822: }
823: $r->print('<script>popwin.document.popremain.remaining.value="'.
824: $$prog_state{'done'}.'/'.$$prog_state{'max'}.
825: ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
826: $$prog_state{'laststart'}=&Time::HiRes::time();
827: $r->rflush();
828: }
829:
830: # close Progress Line
831: sub Close_PrgWin {
832: my ($r,$prog_state)=@_;
833: $r->print('<script>popwin.close()</script>'."\n");
834: undef(%$prog_state);
835: $r->rflush();
836: }
837:
838:
839: # ------------------------------------------------------- Puts directory header
840:
841: sub crumbs {
842: my ($uri,$target,$prefix)=@_;
843: my $output='<br /><tt><b><font size="+2">'.$prefix.'/';
844: if ($ENV{'user.adv'}) {
845: my $path=$prefix;
846: foreach (split('/',$uri)) {
847: unless ($_) { next; }
848: $path.='/'.$_;
849: $output.='<a href="'.$path.'"'.($target?' target="'.$target.'"':'').'>'.$_.'</a>/';
850: }
851: } else {
852: $output.=$uri;
853: }
854: unless ($uri=~/\/$/) { $output=~s/\/$//; }
855: return $output.'</font></b></tt><br />';
856: }
857:
858:
859: 1;
860:
861: __END__
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