1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.55 2004/02/20 17:03:38 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: ######################################################################
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 Time::HiRes;
60: use Apache::lonlocal;
61: use strict;
62:
63: ##############################################
64: ##############################################
65:
66: =pod
67:
68: =item authorbombs
69:
70: =cut
71:
72: ##############################################
73: ##############################################
74:
75: sub authorbombs {
76: my $url=shift;
77: $url=&Apache::lonnet::declutter($url);
78: my ($udom,$uname)=($url=~/^(\w+)\/(\w+)\//);
79: my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom);
80: foreach (keys %bombs) {
81: if ($_=~/^$udom\/$uname\//) {
82: return '<a href="/adm/bombs/'.$url.
83: '"><img src="/adm/lonMisc/bomb.gif" border="0" /></a>'.
84: &Apache::loncommon::help_open_topic('About_Bombs');
85: }
86: }
87: return '';
88: }
89:
90: ##############################################
91: ##############################################
92:
93: sub recent_filename {
94: my $area=shift;
95: return 'nohist_recent_'.&Apache::lonnet::escape($area);
96: }
97:
98: sub store_recent {
99: my ($area,$name,$value)=@_;
100: my $file=&recent_filename($area);
101: my %recent=&Apache::lonnet::dump($file);
102: if (scalar(keys(%recent))>10) {
103: # remove oldest value
104: my $oldest=time;
105: my $delkey='';
106: foreach (keys %recent) {
107: my $thistime=(split(/\&/,$recent{$_}))[0];
108: if ($thistime<$oldest) {
109: $oldest=$thistime;
110: $delkey=$_;
111: }
112: }
113: &Apache::lonnet::del($file,[$delkey]);
114: }
115: # store new value
116: &Apache::lonnet::put($file,{ $name =>
117: time.'&'.&Apache::lonnet::escape($value) });
118: }
119:
120: sub select_recent {
121: my ($area,$fieldname,$event)=@_;
122: my %recent=&Apache::lonnet::dump(&recent_filename($area));
123: my $return="\n<select name='$fieldname'".
124: ($event?" onChange='$event'":'').
125: ">\n<option value=''>--- ".&mt('Recent')." ---</option>";
126: foreach (sort keys %recent) {
127: unless ($_=~/^error\:/) {
128: $return.="\n<option value='$_'>".
129: &Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]).
130: '</option>';
131: }
132: }
133: $return.="\n</select>\n";
134: return $return;
135: }
136:
137:
138: =pod
139:
140: =item textbox
141:
142: =cut
143:
144: ##############################################
145: ##############################################
146: sub textbox {
147: my ($name,$value,$size,$special) = @_;
148: $size = 40 if (! defined($size));
149: my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
150: 'value="'.$value.'" '.$special.' />';
151: return $Str;
152: }
153:
154: ##############################################
155: ##############################################
156:
157: =pod
158:
159: =item checkbox
160:
161: =cut
162:
163: ##############################################
164: ##############################################
165: sub checkbox {
166: my ($name,$value) = @_;
167: my $Str = '<input type="checkbox" name="'.$name.'"'.
168: ($value?' checked="1"':'').' />';
169: return $Str;
170: }
171:
172: ##############################################
173: ##############################################
174:
175: =pod
176:
177: =item &date_setter
178:
179: &date_setter returns html and javascript for a compact date-setting form.
180: To retrieve values from it, use &get_date_from_form().
181:
182: Inputs
183:
184: =over 4
185:
186: =item $dname
187:
188: The name to prepend to the form elements.
189: The form elements defined will be dname_year, dname_month, dname_day,
190: dname_hour, dname_min, and dname_sec.
191:
192: =item $currentvalue
193:
194: The current setting for this time parameter. A unix format time
195: (time in seconds since the beginning of Jan 1st, 1970, GMT.
196: An undefined value is taken to indicate the value is the current time.
197: Also, to be explicit, a value of 'now' also indicates the current time.
198:
199: =item $special
200:
201: Additional html/javascript to be associated with each element in
202: the date_setter. See lonparmset for example usage.
203:
204: =back
205:
206: Bugs
207:
208: The method used to restrict user input will fail in the year 2400.
209:
210: =cut
211:
212: ##############################################
213: ##############################################
214: sub date_setter {
215: my ($formname,$dname,$currentvalue,$special,$includeempty) = @_;
216: if (! defined($currentvalue) || $currentvalue eq 'now') {
217: unless ($includeempty) {
218: $currentvalue = time;
219: } else {
220: $currentvalue = 0;
221: }
222: }
223: # other potentially useful values: wkday,yrday,is_daylight_savings
224: my ($sec,$min,$hour,$mday,$month,$year)=('','','','','','');
225: if ($currentvalue) {
226: ($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) =
227: localtime($currentvalue);
228: $year += 1900;
229: }
230: my $result = "\n<!-- $dname date setting form -->\n";
231: $result .= <<ENDJS;
232: <script language="Javascript">
233: function $dname\_checkday() {
234: var day = document.$formname.$dname\_day.value;
235: var month = document.$formname.$dname\_month.value;
236: var year = document.$formname.$dname\_year.value;
237: var valid = true;
238: if (day < 1) {
239: document.$formname.$dname\_day.value = 1;
240: }
241: if (day > 31) {
242: document.$formname.$dname\_day.value = 31;
243: }
244: if ((month == 1) || (month == 3) || (month == 5) ||
245: (month == 7) || (month == 8) || (month == 10) ||
246: (month == 12)) {
247: if (day > 31) {
248: document.$formname.$dname\_day.value = 31;
249: day = 31;
250: }
251: } else if (month == 2 ) {
252: if ((year % 4 == 0) && (year % 100 != 0)) {
253: if (day > 29) {
254: document.$formname.$dname\_day.value = 29;
255: }
256: } else if (day > 29) {
257: document.$formname.$dname\_day.value = 28;
258: }
259: } else if (day > 30) {
260: document.$formname.$dname\_day.value = 30;
261: }
262: }
263:
264: function $dname\_opencalendar() {
265: var calwin=window.open(
266: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
267: document.$formname.$dname\_month.value+"&year="+
268: document.$formname.$dname\_year.value,
269: "LONCAPAcal",
270: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
271:
272: }
273: </script>
274: ENDJS
275: $result .= " <nobr><select name=\"$dname\_month\" ".$special.' '.
276: "onChange=\"javascript:$dname\_checkday()\" >\n";
277: my @Months = qw/January February March April May June
278: July August September October November December/;
279: # Pad @Months with a bogus value to make indexing easier
280: unshift(@Months,'If you can read this an error occurred');
281: if ($includeempty) { $result.="<option value=''></option>"; }
282: for(my $m = 1;$m <=$#Months;$m++) {
283: $result .= " <option value=\"$m\" ";
284: $result .= "selected " if ($m-1 eq $month);
285: $result .= "> ".&mt($Months[$m])." </option>\n";
286: }
287: $result .= " </select>\n";
288: $result .= " <input type=\"text\" name=\"$dname\_day\" ".
289: "value=\"$mday\" size=\"3\" ".$special.' '.
290: "onChange=\"javascript:$dname\_checkday()\" />\n";
291: $result .= " <input type=\"year\" name=\"$dname\_year\" ".
292: "value=\"$year\" size=\"5\" ".$special.' '.
293: "onChange=\"javascript:$dname\_checkday()\" />\n";
294: $result .= " ";
295: $result .= " <select name=\"$dname\_hour\" ".$special." >\n";
296: if ($includeempty) { $result.="<option value=''></option>"; }
297: for (my $h = 0;$h<24;$h++) {
298: $result .= " <option value=\"$h\" ";
299: $result .= "selected " if ($hour == $h);
300: $result .= "> ";
301: my $timest='';
302: if ($h == 0) {
303: $timest .= "12 am";
304: } elsif($h == 12) {
305: $timest .= "12 noon";
306: } elsif($h < 12) {
307: $timest .= "$h am";
308: } else {
309: $timest .= $h-12 ." pm";
310: }
311: $timest=&mt($timest);
312: $result .= $timest." </option>\n";
313: }
314: $result .= " </select>\n";
315: $result .= " <input type=\"text\" name=\"$dname\_minute\" ".$special.' '.
316: "value=\"$min\" size=\"3\" /> m\n";
317: $result .= " <input type=\"text\" name=\"$dname\_second\" ".$special.' '.
318: "value=\"$sec\" size=\"3\" /> s\n";
319: $result .= "<a href=\"javascript:$dname\_opencalendar()\">".
320: &mt('Select Date')."</a></nobr>\n<!-- end $dname date setting form -->\n";
321: return $result;
322: }
323:
324: ##############################################
325: ##############################################
326:
327: =pod
328:
329: =item &get_date_from_form
330:
331: get_date_from_form retrieves the date specified in an &date_setter form.
332:
333: Inputs:
334:
335: =over 4
336:
337: =item $dname
338:
339: The name passed to &datesetter, which prefixes the form elements.
340:
341: =item $defaulttime
342:
343: The unix time to use as the default in case of poor inputs.
344:
345: =back
346:
347: Returns: Unix time represented in the form.
348:
349: =cut
350:
351: ##############################################
352: ##############################################
353: sub get_date_from_form {
354: my ($dname) = @_;
355: my ($sec,$min,$hour,$day,$month,$year);
356: #
357: if (defined($ENV{'form.'.$dname.'_second'})) {
358: my $tmpsec = $ENV{'form.'.$dname.'_second'};
359: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
360: $sec = $tmpsec;
361: }
362: }
363: if (defined($ENV{'form.'.$dname.'_minute'})) {
364: my $tmpmin = $ENV{'form.'.$dname.'_minute'};
365: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
366: $min = $tmpmin;
367: }
368: }
369: if (defined($ENV{'form.'.$dname.'_hour'})) {
370: my $tmphour = $ENV{'form.'.$dname.'_hour'};
371: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
372: $hour = $tmphour;
373: }
374: }
375: if (defined($ENV{'form.'.$dname.'_day'})) {
376: my $tmpday = $ENV{'form.'.$dname.'_day'};
377: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
378: $day = $tmpday;
379: }
380: }
381: if (defined($ENV{'form.'.$dname.'_month'})) {
382: my $tmpmonth = $ENV{'form.'.$dname.'_month'};
383: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
384: $month = $tmpmonth - 1;
385: }
386: }
387: if (defined($ENV{'form.'.$dname.'_year'})) {
388: my $tmpyear = $ENV{'form.'.$dname.'_year'};
389: if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
390: $year = $tmpyear - 1900;
391: }
392: }
393: if (($year<70) || ($year>137)) { return undef; }
394: if (defined($sec) && defined($min) && defined($hour) &&
395: defined($day) && defined($month) && defined($year) &&
396: eval(&timelocal($sec,$min,$hour,$day,$month,$year))) {
397: return &timelocal($sec,$min,$hour,$day,$month,$year);
398: } else {
399: return undef;
400: }
401: }
402:
403: ##############################################
404: ##############################################
405:
406: =pod
407:
408: =item &pjump_javascript_definition()
409:
410: Returns javascript defining the 'pjump' function, which opens up a
411: parameter setting wizard.
412:
413: =cut
414:
415: ##############################################
416: ##############################################
417: sub pjump_javascript_definition {
418: my $Str = <<END;
419: function pjump(type,dis,value,marker,ret,call) {
420: parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
421: +"&value="+escape(value)+"&marker="+escape(marker)
422: +"&return="+escape(ret)
423: +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
424: "height=350,width=350,scrollbars=no,menubar=no");
425: }
426: END
427: return $Str;
428: }
429:
430: ##############################################
431: ##############################################
432:
433: =pod
434:
435: =item &javascript_nothing()
436:
437: Return an appropriate null for the users browser. This is used
438: as the first arguement for window.open calls when you want a blank
439: window that you can then write to.
440:
441: =cut
442:
443: ##############################################
444: ##############################################
445: sub javascript_nothing {
446: # mozilla and other browsers work with "''", but IE on mac does not.
447: my $nothing = "''";
448: my $user_browser;
449: my $user_os;
450: $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
451: $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
452: if (! defined($user_browser) || ! defined($user_os)) {
453: (undef,$user_browser,undef,undef,undef,$user_os) =
454: &Apache::loncommon::decode_user_agent();
455: }
456: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
457: $nothing = "'javascript:void(0);'";
458: }
459: return $nothing;
460: }
461:
462:
463: ##############################################
464: ##############################################
465:
466: =pod
467:
468: =item &StatusOptions()
469:
470: Returns html for a selection box which allows the user to choose the
471: enrollment status of students. The selection box name is 'Status'.
472:
473: Inputs:
474:
475: $status: the currently selected status. If undefined the value of
476: $ENV{'form.Status'} is taken. If that is undefined, a value of 'Active'
477: is used.
478:
479: $formname: The name of the form. If defined the onchange attribute of
480: the selection box is set to document.$formname.submit().
481:
482: $size: the size (number of lines) of the selection box.
483:
484: $onchange: javascript to use when the value is changed. Enclosed in
485: double quotes, ""s, not single quotes.
486:
487: Returns: a perl string as described.
488:
489: =cut
490:
491: ##############################################
492: ##############################################
493: sub StatusOptions {
494: my ($status, $formName,$size,$onchange)=@_;
495: $size = 1 if (!defined($size));
496: if (! defined($status)) {
497: $status = 'Active';
498: $status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
499: }
500:
501: my $OpSel1 = '';
502: my $OpSel2 = '';
503: my $OpSel3 = '';
504:
505: if($status eq 'Any') { $OpSel3 = ' selected'; }
506: elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; }
507: else { $OpSel1 = ' selected'; }
508:
509: my $Str = '';
510: $Str .= '<select name="Status"';
511: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
512: $Str .= ' onchange="document.'.$formName.'.submit()"';
513: }
514: if (defined($onchange)) {
515: $Str .= ' onchange="'.$onchange.'"';
516: }
517: $Str .= ' size="'.$size.'" ';
518: $Str .= '>'."\n";
519: $Str .= '<option value="Active" '.$OpSel1.'>'.
520: &mt('Currently Enrolled').'</option>'."\n";
521: $Str .= '<option value="Expired" '.$OpSel2.'>'.
522: &mt('Previously Enrolled').'</option>'."\n";
523: $Str .= '<option value="Any" '.$OpSel3.'>'.
524: &mt('Any Enrollment Status').'</option>'."\n";
525: $Str .= '</select>'."\n";
526: }
527:
528: ########################################################
529: ########################################################
530:
531: =pod
532:
533: =item Progess Window Handling Routines
534:
535: These routines handle the creation, update, increment, and closure of
536: progress windows. The progress window reports to the user the number
537: of items completed and an estimate of the time required to complete the rest.
538:
539: =over 4
540:
541:
542: =item &Create_PrgWin
543:
544: Writes javascript to the client to open a progress window and returns a
545: data structure used for bookkeeping.
546:
547: Inputs
548:
549: =over 4
550:
551: =item $r Apache request
552:
553: =item $title The title of the progress window
554:
555: =item $heading A description (usually 1 line) of the process being initiated.
556:
557: =item $number_to_do The total number of items being processed.
558:
559: =item $type Either 'popup' or 'inline' (popup is assumed if nothing is
560: specified)
561:
562: =item $width Specify the width in charaters of the input field.
563:
564: =item $formname Only useful in the inline case, if a form already exists, this needs to be used and specfiy the name of the form, otherwise the Progress line will be created in a new form of it's own
565:
566: =item $inputname Only useful in the inline case, if a form and an input of type text exists, use this to specify the name of the input field
567:
568: =back
569:
570: Returns a hash containing the progress state data structure.
571:
572:
573: =item &Update_PrgWin
574:
575: Updates the text in the progress indicator. Does not increment the count.
576: See &Increment_PrgWin.
577:
578: Inputs:
579:
580: =over 4
581:
582: =item $r Apache request
583:
584: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
585:
586: =item $displaystring The string to write to the status indicator
587:
588: =back
589:
590: Returns: none
591:
592:
593: =item Increment_PrgWin
594:
595: Increment the count of items completed for the progress window by 1.
596:
597: Inputs:
598:
599: =over 4
600:
601: =item $r Apache request
602:
603: =item $prog_state Pointer to the data structure returned by Create_PrgWin
604:
605: =item $extraInfo A description of the items being iterated over. Typically
606: 'student'.
607:
608: =back
609:
610: Returns: none
611:
612:
613: =item Close_PrgWin
614:
615: Closes the progress window.
616:
617: Inputs:
618:
619: =over 4
620:
621: =item $r Apache request
622:
623: =item $prog_state Pointer to the data structure returned by Create_PrgWin
624:
625: =back
626:
627: Returns: none
628:
629: =back
630:
631: =cut
632:
633: ########################################################
634: ########################################################
635:
636: my $uniq=0;
637: sub get_uniq_name {
638: $uniq++;
639: return 'uniquename'.$uniq;
640: }
641:
642: # Create progress
643: sub Create_PrgWin {
644: my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
645: $inputname)=@_;
646: if (!defined($type)) { $type='popup'; }
647: if (!defined($width)) { $width=55; }
648: my %prog_state;
649: $prog_state{'type'}=$type;
650: if ($type eq 'popup') {
651: $prog_state{'window'}='popwin';
652: #the whole function called through timeout is due to issues
653: #in mozilla Read BUG #2665 if you want to know the whole story
654: &r_print($r,'<script>'.
655: "var popwin;
656: function openpopwin () {
657: popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
658: "popwin.document.writeln(\'<html><head><title>$title</title></head>".
659: "<body bgcolor=\"#88DDFF\">".
660: "<h4>$heading</h4>".
661: "<form name=popremain>".
662: '<input type="text" size="'.$width.'" name="remaining" value="'.
663: &mt('Starting').'"></form>'.
664: "</body></html>\');".
665: "popwin.document.close();}".
666: "\nwindow.setTimeout(openpopwin,0)</script>");
667: $prog_state{'formname'}='popremain';
668: $prog_state{'inputname'}="remaining";
669: } elsif ($type eq 'inline') {
670: $prog_state{'window'}='window';
671: if (!$formname) {
672: $prog_state{'formname'}=&get_uniq_name();
673: &r_print($r,'<form name="'.$prog_state{'formname'}.'">');
674: } else {
675: $prog_state{'formname'}=$formname;
676: }
677: if (!$inputname) {
678: $prog_state{'inputname'}=&get_uniq_name();
679: &r_print($r,'<input type="text" name="'.$prog_state{'inputname'}.
680: '" size="'.$width.'" />');
681: } else {
682: $prog_state{'inputname'}=$inputname;
683:
684: }
685: if (!$formname) { &r_print($r,'</form>'); }
686: &Update_PrgWin($r,\%prog_state,&mt('Starting'));
687: }
688:
689: $prog_state{'done'}=0;
690: $prog_state{'firststart'}=&Time::HiRes::time();
691: $prog_state{'laststart'}=&Time::HiRes::time();
692: $prog_state{'max'}=$number_to_do;
693:
694: return %prog_state;
695: }
696:
697: # update progress
698: sub Update_PrgWin {
699: my ($r,$prog_state,$displayString)=@_;
700: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
701: $$prog_state{'formname'}.'.'.
702: $$prog_state{'inputname'}.'.value="'.
703: $displayString.'";</script>');
704: $$prog_state{'laststart'}=&Time::HiRes::time();
705: }
706:
707: # increment progress state
708: sub Increment_PrgWin {
709: my ($r,$prog_state,$extraInfo)=@_;
710: $$prog_state{'done'}++;
711: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
712: $$prog_state{'done'} *
713: ($$prog_state{'max'}-$$prog_state{'done'});
714: $time_est = int($time_est);
715: if (int ($time_est/60) > 0) {
716: my $min = int($time_est/60);
717: my $sec = $time_est % 60;
718: $time_est = $min.' '.&mt('minutes');
719: if ($min < 10) {
720: if ($sec > 1) {
721: $time_est.= ', '.$sec.' '.&mt('seconds');
722: } elsif ($sec > 0) {
723: $time_est.= ', '.$sec.' '.&mt('second');
724: }
725: }
726: } else {
727: $time_est .= ' '.&mt('seconds');
728: }
729: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
730: if ($lasttime > 9) {
731: $lasttime = int($lasttime);
732: } elsif ($lasttime < 0.01) {
733: $lasttime = 0;
734: } else {
735: $lasttime = sprintf("%3.2f",$lasttime);
736: }
737: if ($lasttime == 1) {
738: $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
739: } else {
740: $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
741: }
742: #
743: my $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
744: my $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
745: if (! defined($user_browser) || ! defined($user_os)) {
746: (undef,$user_browser,undef,undef,undef,$user_os) =
747: &Apache::loncommon::decode_user_agent();
748: }
749: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
750: $lasttime = '';
751: }
752: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
753: $$prog_state{'formname'}.'.'.
754: $$prog_state{'inputname'}.'.value="'.
755: $$prog_state{'done'}.'/'.$$prog_state{'max'}.
756: ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
757: $$prog_state{'laststart'}=&Time::HiRes::time();
758: }
759:
760: # close Progress Line
761: sub Close_PrgWin {
762: my ($r,$prog_state)=@_;
763: if ($$prog_state{'type'} eq 'popup') {
764: &r_print($r,'<script>popwin.close()</script>'."\n");
765: } elsif ($$prog_state{'type'} eq 'inline') {
766: &Update_PrgWin($r,$prog_state,&mt('Done'));
767: }
768: undef(%$prog_state);
769: }
770:
771: sub r_print {
772: my ($r,$to_print)=@_;
773: if ($r) {
774: $r->print($to_print);
775: $r->rflush();
776: } else {
777: print($to_print);
778: }
779: }
780:
781: # ------------------------------------------------------- Puts directory header
782:
783: sub crumbs {
784: my ($uri,$target,$prefix,$form)=@_;
785: my $output='<br /><tt><b><font size="+2">'.$prefix.'/';
786: if ($ENV{'user.adv'}) {
787: my $path=$prefix.'/';
788: foreach (split('/',$uri)) {
789: unless ($_) { next; }
790: $path.=$_;
791: unless ($path eq $uri) { $path.='/'; }
792: my $linkpath=$path;
793: if ($form) {
794: $linkpath="javascript:$form.action='$path';$form.submit();";
795: }
796: $output.='<a href="'.$linkpath.'"'.($target?' target="'.$target.'"':'').'>'.$_.'</a>/';
797: }
798: } else {
799: $output.=$uri;
800: }
801: unless ($uri=~/\/$/) { $output=~s/\/$//; }
802: return $output.'</font></b></tt><br />';
803: }
804:
805: # ------------------------------------------------- Output headers for HTMLArea
806:
807: sub htmlareaheaders {
808: unless (&htmlareabrowser()) { return ''; }
809: my $lang='en';
810: return (<<ENDHEADERS);
811: <script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
812: <script type="text/javascript" src="/htmlarea/lang/$lang.js"></script>
813: <script type="text/javascript" src="/htmlarea/dialog.js"></script>
814: <style type="text/css">
815: \@import url(/htmlarea/htmlarea.css);
816: </style>
817: ENDHEADERS
818: }
819:
820: # ---------------------------------------------------------- Script to activate
821:
822: sub htmlareaactive {
823: unless (&htmlareabrowser()) { return ''; }
824: return (<<ENDSCRIPT);
825: <script type="text/javascript" defer="1">
826: HTMLArea.replaceAll();
827: </script>
828: ENDSCRIPT
829: }
830:
831: # ---------------------------------------- Browser capable of running HTMLArea?
832:
833: sub htmlareabrowser {
834: return 1;
835: }
836:
837: ############################################################
838: ############################################################
839:
840: =pod
841:
842: =item breadcrumbs
843:
844: Compiles the previously registered breadcrumbs into an series of links.
845: FAQ and BUG links will be placed on the left side of the table if they
846: are defined for the last registered breadcrumb.
847: Additionally supports a 'component', which will be displayed on the
848: right side of the table (without a link).
849: A link to help for the component will be included if one is specified.
850:
851: All inputs can be undef without problems.
852:
853: Inputs: $color (the background color of the table returned),
854: $component (the large text on the right side of the table),
855: $component_help
856:
857: Returns a string containing breadcrumbs for the current page.
858:
859: =item clear_breadcrumbs
860:
861: Clears the previously stored breadcrumbs.
862:
863: =item add_breadcrumb
864:
865: Pushes a breadcrumb on the stack of crumbs.
866:
867: input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
868: are required. If present the keys 'faq' and 'bug' will be used to provide
869: links to the FAQ and bug sites.
870:
871: returns: nothing
872:
873: =cut
874:
875: ############################################################
876: ############################################################
877: {
878: my @Crumbs;
879:
880: sub breadcrumbs {
881: my ($color,$component,$component_help,$function,$domain) = @_;
882: if (! defined($color)) {
883: if (! defined($function)) {
884: $function = &Apache::loncommon::get_users_function();
885: }
886: $color = &Apache::loncommon::designparm($function.'.tabbg',
887: $domain);
888: }
889: #
890: my $Str = "\n".
891: '<table width="100%" border="0" cellpadding="0" cellspacing="0">'.
892: '<tr><td bgcolor="'.$color.'">'.
893: '<font size="-1">';
894: # The last breadcrumb does not have a link, so handle it seperately.
895: my $last = pop(@Crumbs);
896: # The first one should be the course, I guess.
897: if (exists($ENV{'request.course.id'})) {
898: my $cid = $ENV{'request.course.id'};
899: unshift(@Crumbs,{href=>'/adm/menu',
900: title=>'Go to main menu',
901: text=>$ENV{'course.'.$cid.'.description'},
902: });
903: }
904: my $links .=
905: join('->',
906: map {
907: '<a href="'.$_->{'href'}.'" title="'.$_->{'title'}.'">'.
908: $_->{'text'}.'</a>'
909: } @Crumbs
910: );
911: $links .= '->' if ($links ne '');
912: $links .= '<b>'.$last->{'text'}.'</b>';
913: #
914: my $icons = '';
915: if (exists($last->{'faq'})) {
916: $icons .= &Apache::loncommon::help_open_faq($last->{'faq'});
917: }
918: if (exists($last->{'bug'})) {
919: $icons .= &Apache::loncommon::help_open_bug($last->{'bug'});
920: }
921: if ($icons ne '') {
922: $Str .= $icons.' ';
923: }
924: #
925: $Str .= $links.'</font></td>';
926: #
927: if (defined($component)) {
928: $Str .= '<td align="right" bgcolor="'.$color.'">'.
929: '<font size="+1">'.$component.'</font>';
930: if (defined($component_help)) {
931: $Str .=
932: &Apache::loncommon::help_open_topic($component_help);
933: }
934: $Str.= '</td>';
935: }
936: $Str .= '</tr></table>'."\n";
937: #
938: # Return the @Crumbs stack to what we started with
939: push(@Crumbs,$last);
940: shift(@Crumbs);
941: #
942: return $Str;
943: }
944:
945: sub clear_breadcrumbs {
946: undef(@Crumbs);
947: }
948:
949: sub add_breadcrumb {
950: push (@Crumbs,@_);
951: }
952:
953: }
954:
955: ############################################################
956: ############################################################
957:
958:
959: 1;
960:
961: __END__
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