1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.306 2012/03/26 10:24:08 foxr 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 strict;
59: use Time::Local;
60: use Time::HiRes;
61: use Apache::lonlocal;
62: use Apache::lonnet;
63: use HTML::Entities();
64: use LONCAPA;
65:
66: sub java_not_enabled {
67: return "\n".'<span class="LC_error">'.
68: &mt('The required Java applet could not be started. Please make sure to have Java installed and active in your browser.').
69: "</span>\n";
70: }
71:
72: sub coursepreflink {
73: my ($text,$category)=@_;
74: if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
75: return '<a target="_top" href="'.&HTML::Entities::encode("/adm/courseprefs?phase=display&actions=$category",'<>&"').'"><span class="LC_setting">'.$text.'</span></a>';
76: } else {
77: return '';
78: }
79: }
80:
81: sub raw_href_to_link {
82: my ($message)=@_;
83: $message=~s/(https?\:\/\/[^\s\'\"\<]+)([\s\<]|$)/<a href="$1"><tt>$1<\/tt><\/a>$2/gi;
84: return $message;
85: }
86:
87: sub entity_encode {
88: my ($text)=@_;
89: return &HTML::Entities::encode($text, '<>&"');
90: }
91:
92: sub direct_parm_link {
93: my ($linktext,$symb,$filter,$part,$target)=@_;
94: $symb=&entity_encode($symb);
95: $filter=&entity_encode($filter);
96: $part=&entity_encode($part);
97: if (($symb) && (&Apache::lonnet::allowed('opa')) && ($target ne 'tex')) {
98: return "<a target='_top' href='/adm/parmset?symb=$symb&filter=$filter&part=$part'><span class='LC_setting'>$linktext</span></a>";
99: } else {
100: return $linktext;
101: }
102: }
103: ##############################################
104: ##############################################
105:
106: =item confirm_success
107:
108: Successful completion of an operation message
109:
110: =cut
111:
112: sub confirm_success {
113: my ($message,$failure)=@_;
114: if ($failure) {
115: return '<span class="LC_error" style="font-size: inherit;">'."\n"
116: .'<img src="/adm/lonIcons/navmap.wrong.gif" alt="'.&mt('Error').'" /> '."\n"
117: .$message."\n"
118: .'</span>'."\n";
119: } else {
120: return '<span class="LC_success">'."\n"
121: .'<img src="/adm/lonIcons/navmap.correct.gif" alt="'.&mt('OK').'" /> '."\n"
122: .$message."\n"
123: .'</span>'."\n";
124: }
125: }
126:
127: ##############################################
128: ##############################################
129:
130: =pod
131:
132: =item dragmath_button
133:
134: Creates a button that launches a dragmath popup-window, in which an
135: expression can be edited and pasted as LaTeX into a specified textarea.
136:
137: textarea - Name of the textarea to edit.
138: helpicon - If true, show a help icon to the right of the button.
139:
140: =cut
141:
142: sub dragmath_button {
143: my ($textarea,$helpicon) = @_;
144: my $help_text;
145: if ($helpicon) {
146: $help_text = &Apache::loncommon::help_open_topic('Authoring_Math_Editor',undef,undef,undef,undef,'mathhelpicon_'.$textarea);
147: }
148: my $buttontext=&mt('Edit Math');
149: return <<ENDDRAGMATH;
150: <input type="button" value="$buttontext" onclick="javascript:mathedit('$textarea',document)" />$help_text
151: ENDDRAGMATH
152: }
153:
154: ##############################################
155:
156: =pod
157:
158: =item dragmath_js
159:
160: Javascript used to open pop-up window containing dragmath applet which
161: can be used to paste LaTeX into a textarea.
162: =cut
163:
164: sub dragmath_js {
165: my ($popup) = @_;
166: return <<ENDDRAGMATHJS;
167: <script type="text/javascript">
168: // <![CDATA[
169: function mathedit(textarea, doc) {
170: targetEntry = textarea;
171: targetDoc = doc;
172: newwin = window.open("/adm/dragmath/applet/$popup.html","","width=565,height=500,resizable");
173: }
174: // ]]>
175: </script>
176:
177: ENDDRAGMATHJS
178: }
179:
180:
181: ##############################################
182: ##############################################
183:
184: =pod
185:
186: =item authorbombs
187:
188: =cut
189:
190: ##############################################
191: ##############################################
192:
193: sub authorbombs {
194: my $url=shift;
195: $url=&Apache::lonnet::declutter($url);
196: my ($udom,$uname)=($url=~m{^($LONCAPA::domain_re)/($LONCAPA::username_re)/});
197: my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom);
198: foreach my $bomb (keys(%bombs)) {
199: if ($bomb =~ /^$udom\/$uname\//) {
200: return '<a href="/adm/bombs/'.$url.
201: '"><img src="'.&Apache::loncommon::lonhttpdurl('/adm/lonMisc/bomb.gif').'" alt="'.&mt('Bomb').'" border="0" /></a>'.
202: &Apache::loncommon::help_open_topic('About_Bombs');
203: }
204: }
205: return '';
206: }
207:
208: ##############################################
209: ##############################################
210:
211: sub recent_filename {
212: my $area=shift;
213: return 'nohist_recent_'.&escape($area);
214: }
215:
216: sub store_recent {
217: my ($area,$name,$value,$freeze)=@_;
218: my $file=&recent_filename($area);
219: my %recent=&Apache::lonnet::dump($file);
220: if (scalar(keys(%recent))>20) {
221: # remove oldest value
222: my $oldest=time();
223: my $delkey='';
224: foreach my $item (keys(%recent)) {
225: my $thistime=(split(/\&/,$recent{$item}))[0];
226: if (($thistime ne "always_include") && ($thistime<$oldest)) {
227: $oldest=$thistime;
228: $delkey=$item;
229: }
230: }
231: &Apache::lonnet::del($file,[$delkey]);
232: }
233: # store new value
234: my $timestamp;
235: if ($freeze) {
236: $timestamp = "always_include";
237: } else {
238: $timestamp = time();
239: }
240: &Apache::lonnet::put($file,{ $name =>
241: $timestamp.'&'.&escape($value) });
242: }
243:
244: sub remove_recent {
245: my ($area,$names)=@_;
246: my $file=&recent_filename($area);
247: return &Apache::lonnet::del($file,$names);
248: }
249:
250: sub select_recent {
251: my ($area,$fieldname,$event)=@_;
252: my %recent=&Apache::lonnet::dump(&recent_filename($area));
253: my $return="\n<select name='$fieldname'".
254: ($event?" onchange='$event'":'').
255: ">\n<option value=''>--- ".&mt('Recent')." ---</option>";
256: foreach my $value (sort(keys(%recent))) {
257: unless ($value =~/^error\:/) {
258: my $escaped = &Apache::loncommon::escape_url($value);
259: &Apache::loncommon::inhibit_menu_check(\$escaped);
260: if ($area eq 'residx') {
261: next if ((!&Apache::lonnet::allowed('bre',$value)) && (!&Apache::lonnet::allowed('bro',$value)));
262: }
263: $return.="\n<option value='$escaped'>".
264: &unescape((split(/\&/,$recent{$value}))[1]).
265: '</option>';
266: }
267: }
268: $return.="\n</select>\n";
269: return $return;
270: }
271:
272: sub get_recent {
273: my ($area, $n) = @_;
274: my %recent=&Apache::lonnet::dump(&recent_filename($area));
275:
276: # Create hash with key as time and recent as value
277: # Begin filling return_hash with any 'always_include' option
278: my %time_hash = ();
279: my %return_hash = ();
280: foreach my $item (keys(%recent)) {
281: my ($thistime,$thisvalue)=(split(/\&/,$recent{$item}));
282: if ($thistime eq 'always_include') {
283: $return_hash{$item} = &unescape($thisvalue);
284: $n--;
285: } else {
286: $time_hash{$thistime} = $item;
287: }
288: }
289:
290: # Sort by decreasing time and return key value pairs
291: my $idx = 1;
292: foreach my $item (reverse(sort(keys(%time_hash)))) {
293: $return_hash{$time_hash{$item}} =
294: &unescape((split(/\&/,$recent{$time_hash{$item}}))[1]);
295: if ($n && ($idx++ >= $n)) {last;}
296: }
297:
298: return %return_hash;
299: }
300:
301: sub get_recent_frozen {
302: my ($area) = @_;
303: my %recent=&Apache::lonnet::dump(&recent_filename($area));
304:
305: # Create hash with all 'frozen' items
306: my %return_hash = ();
307: foreach my $item (keys(%recent)) {
308: my ($thistime,$thisvalue)=(split(/\&/,$recent{$item}));
309: if ($thistime eq 'always_include') {
310: $return_hash{$item} = &unescape($thisvalue);
311: }
312: }
313: return %return_hash;
314: }
315:
316:
317:
318: =pod
319:
320: =item textbox
321:
322: =cut
323:
324: ##############################################
325: ##############################################
326: sub textbox {
327: my ($name,$value,$size,$special) = @_;
328: $size = 40 if (! defined($size));
329: $value = &HTML::Entities::encode($value,'<>&"');
330: my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
331: 'value="'.$value.'" '.$special.' />';
332: return $Str;
333: }
334:
335: ##############################################
336: ##############################################
337:
338: =pod
339:
340: =item checkbox
341:
342: =cut
343:
344: ##############################################
345: ##############################################
346: sub checkbox {
347: my ($name,$checked,$value) = @_;
348: my $Str = '<input type="checkbox" name="'.$name.'" ';
349: if (defined($value)) {
350: $Str .= 'value="'.$value.'"';
351: }
352: if ($checked) {
353: $Str .= ' checked="checked"';
354: }
355: $Str .= ' />';
356: return $Str;
357: }
358:
359:
360: =pod
361:
362: =item radiobutton
363:
364: =cut
365:
366: ##############################################
367: ##############################################
368: sub radio {
369: my ($name,$checked,$value) = @_;
370: my $Str = '<input type="radio" name="'.$name.'" ';
371: if (defined($value)) {
372: $Str .= 'value="'.$value.'"';
373: }
374: if ($checked eq $value) {
375: $Str .= ' checked="checked"';
376: }
377: $Str .= ' />';
378: return $Str;
379: }
380:
381: ##############################################
382: ##############################################
383:
384: =pod
385:
386: =item &date_setter
387:
388: &date_setter returns html and javascript for a compact date-setting form.
389: To retrieve values from it, use &get_date_from_form().
390:
391: Inputs
392:
393: =over 4
394:
395: =item $dname
396:
397: The name to prepend to the form elements.
398: The form elements defined will be dname_year, dname_month, dname_day,
399: dname_hour, dname_min, and dname_sec.
400:
401: =item $currentvalue
402:
403: The current setting for this time parameter. A unix format time
404: (time in seconds since the beginning of Jan 1st, 1970, GMT.
405: An undefined value is taken to indicate the value is the current time
406: unless it is requested to leave it empty. See $includeempty.
407: Also, to be explicit, a value of 'now' also indicates the current time.
408:
409: =item $special
410:
411: Additional html/javascript to be associated with each element in
412: the date_setter. See lonparmset for example usage.
413:
414: =item $includeempty
415:
416: If it is set (true) and no date/time value is provided,
417: the date/time fields are left empty.
418:
419: =item $state
420:
421: Specifies the initial state of the form elements. Either 'disabled' or empty.
422: Defaults to empty, which indiciates the form elements are not disabled.
423:
424: =back
425:
426: Bugs
427:
428: The method used to restrict user input will fail in the year 2400.
429:
430: =cut
431:
432: ##############################################
433: ##############################################
434: sub date_setter {
435: my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
436: $no_hh_mm_ss,$defhour,$defmin,$defsec,$nolink) = @_;
437: my $now = time;
438:
439: my $tzname;
440: my ($sec,$min,$hour,$mday,$month,$year) = ('', '', undef,''.''.'');
441: #other potentially useful values: wkday,yrday,is_daylight_savings
442:
443: if (! defined($state) || $state ne 'disabled') {
444: $state = '';
445: }
446: if (! defined($no_hh_mm_ss)) {
447: $no_hh_mm_ss = 0;
448: }
449: if ($currentvalue eq 'now') {
450: $currentvalue = $now;
451: }
452:
453: # Default value: Set empty date field to current time
454: # unless empty inclusion is requested
455: if ((!$includeempty) && (!$currentvalue)) {
456: $currentvalue = $now;
457: }
458: # Do we have a date? Split it!
459: if ($currentvalue) {
460: ($tzname,$sec,$min,$hour,$mday,$month,$year) = &get_timedates($currentvalue);
461:
462: #No values provided for hour, min, sec? Use default 0
463: if (($defhour) || ($defmin) || ($defsec)) {
464: $sec = ($defsec ? $defsec : 0);
465: $min = ($defmin ? $defmin : 0);
466: $hour = ($defhour ? $defhour : 0);
467: }
468: }
469: my $result = "\n<!-- $dname date setting form -->\n";
470: $result .= <<ENDJS;
471: <script type="text/javascript">
472: // <![CDATA[
473: function $dname\_checkday() {
474: var day = document.$formname.$dname\_day.value;
475: var month = document.$formname.$dname\_month.value;
476: var year = document.$formname.$dname\_year.value;
477: var valid = true;
478: if (day < 1) {
479: document.$formname.$dname\_day.value = 1;
480: }
481: if (day > 31) {
482: document.$formname.$dname\_day.value = 31;
483: }
484: if ((month == 1) || (month == 3) || (month == 5) ||
485: (month == 7) || (month == 8) || (month == 10) ||
486: (month == 12)) {
487: if (day > 31) {
488: document.$formname.$dname\_day.value = 31;
489: day = 31;
490: }
491: } else if (month == 2 ) {
492: if ((year % 4 == 0) && (year % 100 != 0)) {
493: if (day > 29) {
494: document.$formname.$dname\_day.value = 29;
495: }
496: } else if (day > 29) {
497: document.$formname.$dname\_day.value = 28;
498: }
499: } else if (day > 30) {
500: document.$formname.$dname\_day.value = 30;
501: }
502: }
503:
504: function $dname\_disable() {
505: document.$formname.$dname\_month.disabled=true;
506: document.$formname.$dname\_day.disabled=true;
507: document.$formname.$dname\_year.disabled=true;
508: document.$formname.$dname\_hour.disabled=true;
509: document.$formname.$dname\_minute.disabled=true;
510: document.$formname.$dname\_second.disabled=true;
511: }
512:
513: function $dname\_enable() {
514: document.$formname.$dname\_month.disabled=false;
515: document.$formname.$dname\_day.disabled=false;
516: document.$formname.$dname\_year.disabled=false;
517: document.$formname.$dname\_hour.disabled=false;
518: document.$formname.$dname\_minute.disabled=false;
519: document.$formname.$dname\_second.disabled=false;
520: }
521:
522: function $dname\_opencalendar() {
523: if (! document.$formname.$dname\_month.disabled) {
524: var calwin=window.open(
525: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
526: document.$formname.$dname\_month.value+"&year="+
527: document.$formname.$dname\_year.value,
528: "LONCAPAcal",
529: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
530: }
531:
532: }
533: // ]]>
534: </script>
535: ENDJS
536: $result .= ' <span class="LC_nobreak">';
537: my $monthselector = qq{<select name="$dname\_month" $special $state onchange="javascript:$dname\_checkday()" >};
538: # Month
539: my @Months = qw/January February March April May June
540: July August September October November December/;
541: # Pad @Months with a bogus value to make indexing easier
542: unshift(@Months,'If you can read this an error occurred');
543: if ($includeempty) { $monthselector.="<option value=''></option>"; }
544: for(my $m = 1;$m <=$#Months;$m++) {
545: $monthselector .= qq{ <option value="$m"};
546: $monthselector .= ' selected="selected"' if ($m-1 eq $month);
547: $monthselector .= '> '.&mt($Months[$m]).' </option>'."\n";
548: }
549: $monthselector.= ' </select>';
550: # Day
551: my $dayselector = qq{<input type="text" name="$dname\_day" $state value="$mday" size="3" $special onchange="javascript:$dname\_checkday()" />};
552: # Year
553: my $yearselector = qq{<input type="text" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
554: #
555: my $hourselector = qq{<select name="$dname\_hour" $special $state >};
556: if ($includeempty) {
557: $hourselector.=qq{<option value=''></option>};
558: }
559: for (my $h = 0;$h<24;$h++) {
560: $hourselector .= qq{<option value="$h"};
561: $hourselector .= ' selected="selected"' if (defined($hour) && $hour == $h);
562: $hourselector .= ">";
563: my $timest='';
564: if ($h == 0) {
565: $timest .= "12 am";
566: } elsif($h == 12) {
567: $timest .= "12 noon";
568: } elsif($h < 12) {
569: $timest .= "$h am";
570: } else {
571: $timest .= $h-12 ." pm";
572: }
573: $timest=&mt($timest);
574: $hourselector .= $timest." </option>\n";
575: }
576: $hourselector .= " </select>\n";
577: my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
578: my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
579: my $cal_link;
580: if (!$nolink) {
581: $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
582: }
583: #
584: my $tzone = ' '.$tzname.' ';
585: if ($no_hh_mm_ss) {
586: $result .= &mt('[_1] [_2] [_3] ',
587: $monthselector,$dayselector,$yearselector).
588: $tzone;
589: if (!$nolink) {
590: $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
591: }
592: } else {
593: $result .= &mt('[_1] [_2] [_3] [_4] [_5]m [_6]s ',
594: $monthselector,$dayselector,$yearselector,
595: $hourselector,$minuteselector,$secondselector).
596: $tzone;
597: if (!$nolink) {
598: $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
599: }
600: }
601: $result .= "</span>\n<!-- end $dname date setting form -->\n";
602: return $result;
603: }
604:
605: sub get_timedates {
606: my ($epoch) = @_;
607: my $dt = DateTime->from_epoch(epoch => $epoch)
608: ->set_time_zone(&Apache::lonlocal::gettimezone());
609: my $tzname = $dt->time_zone_short_name();
610: my $sec = $dt->second;
611: my $min = $dt->minute;
612: my $hour = $dt->hour;
613: my $mday = $dt->day;
614: my $month = $dt->month;
615: if ($month) {
616: $month --;
617: }
618: my $year = $dt->year;
619: return ($tzname,$sec,$min,$hour,$mday,$month,$year);
620: }
621:
622: sub build_url {
623: my ($base, $fields)=@_;
624: my $url;
625: $url = $base.'?';
626: foreach my $key (keys(%$fields)) {
627: $url.=&escape($key).'='.&escape($$fields{$key}).'&';
628: }
629: $url =~ s/&$//;
630: return $url;
631: }
632:
633:
634: ##############################################
635: ##############################################
636:
637: =pod
638:
639: =item &get_date_from_form
640:
641: get_date_from_form retrieves the date specified in an &date_setter form.
642:
643: Inputs:
644:
645: =over 4
646:
647: =item $dname
648:
649: The name passed to &date_setter, which prefixes the form elements.
650:
651: =item $defaulttime
652:
653: The unix time to use as the default in case of poor inputs.
654:
655: =back
656:
657: Returns: Unix time represented in the form.
658:
659: =cut
660:
661: ##############################################
662: ##############################################
663: sub get_date_from_form {
664: my ($dname) = @_;
665: my ($sec,$min,$hour,$day,$month,$year);
666: #
667: if (defined($env{'form.'.$dname.'_second'})) {
668: my $tmpsec = $env{'form.'.$dname.'_second'};
669: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
670: $sec = $tmpsec;
671: }
672: if (!defined($tmpsec) || $tmpsec eq '') { $sec = 0; }
673: } else {
674: $sec = 0;
675: }
676: if (defined($env{'form.'.$dname.'_minute'})) {
677: my $tmpmin = $env{'form.'.$dname.'_minute'};
678: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
679: $min = $tmpmin;
680: }
681: if (!defined($tmpmin) || $tmpmin eq '') { $min = 0; }
682: } else {
683: $min = 0;
684: }
685: if (defined($env{'form.'.$dname.'_hour'})) {
686: my $tmphour = $env{'form.'.$dname.'_hour'};
687: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
688: $hour = $tmphour;
689: }
690: } else {
691: $hour = 0;
692: }
693: if (defined($env{'form.'.$dname.'_day'})) {
694: my $tmpday = $env{'form.'.$dname.'_day'};
695: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
696: $day = $tmpday;
697: }
698: }
699: if (defined($env{'form.'.$dname.'_month'})) {
700: my $tmpmonth = $env{'form.'.$dname.'_month'};
701: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
702: $month = $tmpmonth;
703: }
704: }
705: if (defined($env{'form.'.$dname.'_year'})) {
706: my $tmpyear = $env{'form.'.$dname.'_year'};
707: if (($tmpyear =~ /^\d+$/) && ($tmpyear >= 1970)) {
708: $year = $tmpyear;
709: }
710: }
711: if (($year<1970) || ($year>2037)) { return undef; }
712: if (defined($sec) && defined($min) && defined($hour) &&
713: defined($day) && defined($month) && defined($year)) {
714: my $timezone = &Apache::lonlocal::gettimezone();
715: my $dt = DateTime->new( year => $year,
716: month => $month,
717: day => $day,
718: hour => $hour,
719: minute => $min,
720: second => $sec,
721: time_zone => $timezone,
722: );
723: my $epoch_time = $dt->epoch;
724: if ($epoch_time ne '') {
725: return $epoch_time;
726: } else {
727: return undef;
728: }
729: } else {
730: return undef;
731: }
732: }
733:
734: ##############################################
735: ##############################################
736:
737: =pod
738:
739: =item &pjump_javascript_definition()
740:
741: Returns javascript defining the 'pjump' function, which opens up a
742: parameter setting wizard.
743:
744: =cut
745:
746: ##############################################
747: ##############################################
748: sub pjump_javascript_definition {
749: my $Str = <<END;
750: function pjump(type,dis,value,marker,ret,call,hour,min,sec) {
751: openMyModal("/adm/rat/parameter.html?type="+escape(type)
752: +"&value="+escape(value)+"&marker="+escape(marker)
753: +"&return="+escape(ret)
754: +"&call="+escape(call)+"&name="+escape(dis)
755: +"&defhour="+escape(hour)+"&defmin="+escape(min)
756: +"&defsec="+escape(sec)+"&modal=1",350,350,'no');
757: }
758: END
759: return $Str;
760: }
761:
762: ##############################################
763: ##############################################
764:
765: =pod
766:
767: =item &javascript_nothing()
768:
769: Return an appropriate null for the users browser. This is used
770: as the first arguement for window.open calls when you want a blank
771: window that you can then write to.
772:
773: =cut
774:
775: ##############################################
776: ##############################################
777: sub javascript_nothing {
778: # mozilla and other browsers work with "''", but IE on mac does not.
779: my $nothing = "''";
780: my $user_browser;
781: my $user_os;
782: $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
783: $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
784: if (! defined($user_browser) || ! defined($user_os)) {
785: (undef,$user_browser,undef,undef,undef,$user_os) =
786: &Apache::loncommon::decode_user_agent();
787: }
788: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
789: $nothing = "'javascript:void(0);'";
790: }
791: return $nothing;
792: }
793:
794: ##############################################
795: ##############################################
796: sub javascript_docopen {
797: my ($mimetype) = @_;
798: $mimetype ||= 'text/html';
799: # safari does not understand document.open() and loads "text/html"
800: my $nothing = "''";
801: my $user_browser;
802: my $user_os;
803: $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
804: $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
805: if (! defined($user_browser) || ! defined($user_os)) {
806: (undef,$user_browser,undef,undef,undef,$user_os) =
807: &Apache::loncommon::decode_user_agent();
808: }
809: if ($user_browser eq 'safari' && $user_os =~ 'mac') {
810: $nothing = "document.clear()";
811: } else {
812: $nothing = "document.open('$mimetype','replace')";
813: }
814: return $nothing;
815: }
816:
817:
818: ##############################################
819: ##############################################
820:
821: =pod
822:
823: =item &StatusOptions()
824:
825: Returns html for a selection box which allows the user to choose the
826: enrollment status of students. The selection box name is 'Status'.
827:
828: Inputs:
829:
830: $status: the currently selected status. If undefined the value of
831: $env{'form.Status'} is taken. If that is undefined, a value of 'Active'
832: is used.
833:
834: $formname: The name of the form. If defined the onchange attribute of
835: the selection box is set to document.$formname.submit().
836:
837: $size: the size (number of lines) of the selection box.
838:
839: $onchange: javascript to use when the value is changed. Enclosed in
840: double quotes, ""s, not single quotes.
841:
842: Returns: a perl string as described.
843:
844: =cut
845:
846: ##############################################
847: ##############################################
848: sub StatusOptions {
849: my ($status, $formName,$size,$onchange,$mult)=@_;
850: $size = 1 if (!defined($size));
851: if (! defined($status)) {
852: $status = 'Active';
853: $status = $env{'form.Status'} if (exists($env{'form.Status'}));
854: }
855:
856: my $Str = '';
857: $Str .= '<select name="Status"';
858: if (defined($mult)){
859: $Str .= ' multiple="multiple" ';
860: }
861: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
862: $Str .= ' onchange="document.'.$formName.'.submit()"';
863: }
864: if (defined($onchange)) {
865: $Str .= ' onchange="'.$onchange.'"';
866: }
867: $Str .= ' size="'.$size.'" ';
868: $Str .= '>'."\n";
869: foreach my $type (['Active', &mt('Currently Has Access')],
870: ['Future', &mt('Will Have Future Access')],
871: ['Expired', &mt('Previously Had Access')],
872: ['Any', &mt('Any Access Status')]) {
873: my ($name,$label) = @$type;
874: $Str .= '<option value="'.$name.'" ';
875: if ($status eq $name) {
876: $Str .= 'selected="selected" ';
877: }
878: $Str .= '>'.$label.'</option>'."\n";
879: }
880:
881: $Str .= '</select>'."\n";
882: }
883:
884: ########################################################
885: ########################################################
886:
887: =pod
888:
889: =item Progess Window Handling Routines
890:
891: These routines handle the creation, update, increment, and closure of
892: progress windows. The progress window reports to the user the number
893: of items completed and an estimate of the time required to complete the rest.
894:
895: =over 4
896:
897:
898: =item &Create_PrgWin
899:
900: Writes javascript to the client to open a progress window and returns a
901: data structure used for bookkeeping.
902:
903: Inputs
904:
905: =over 4
906:
907: =item $r Apache request
908:
909: =item $title The title of the progress window
910:
911: =item $heading A description (usually 1 line) of the process being initiated.
912:
913: =item $number_to_do The total number of items being processed.
914:
915: =item $type Either 'popup' or 'inline' (popup is assumed if nothing is
916: specified)
917:
918: =item $width Specify the width in charaters of the input field.
919:
920: =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
921:
922: =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
923:
924: =back
925:
926: Returns a hash containing the progress state data structure.
927:
928:
929: =item &Update_PrgWin
930:
931: Updates the text in the progress indicator. Does not increment the count.
932: See &Increment_PrgWin.
933:
934: Inputs:
935:
936: =over 4
937:
938: =item $r Apache request
939:
940: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
941:
942: =item $displaystring The string to write to the status indicator
943:
944: =back
945:
946: Returns: none
947:
948:
949: =item Increment_PrgWin
950:
951: Increment the count of items completed for the progress window by $step or 1 if no step is provided.
952:
953: Inputs:
954:
955: =over 4
956:
957: =item $r Apache request
958:
959: =item $prog_state Pointer to the data structure returned by Create_PrgWin
960:
961: =item $extraInfo A description of the items being iterated over. Typically
962: 'student'.
963:
964: =item $step (optional) counter step. Will be set to default 1 if ommited. step must be greater than 0 or empty.
965:
966: =back
967:
968: Returns: none
969:
970:
971: =item Close_PrgWin
972:
973: Closes the progress window.
974:
975: Inputs:
976:
977: =over 4
978:
979: =item $r Apache request
980:
981: =item $prog_state Pointer to the data structure returned by Create_PrgWin
982:
983: =back
984:
985: Returns: none
986:
987: =back
988:
989: =cut
990:
991: ########################################################
992: ########################################################
993:
994:
995: # Create progress
996: sub Create_PrgWin {
997: my ($r,$number_to_do)=@_;
998: my %prog_state;
999: $prog_state{'done'}=0;
1000: $prog_state{'firststart'}=&Time::HiRes::time();
1001: $prog_state{'laststart'}=&Time::HiRes::time();
1002: $prog_state{'max'}=$number_to_do;
1003: &Apache::loncommon::LCprogressbar($r);
1004: return %prog_state;
1005: }
1006:
1007: # update progress
1008: sub Update_PrgWin {
1009: my ($r,$prog_state,$displayString)=@_;
1010: &Apache::loncommon::LCprogressbarUpdate($r,undef,$displayString);
1011: $$prog_state{'laststart'}=&Time::HiRes::time();
1012: }
1013:
1014: # increment progress state
1015: sub Increment_PrgWin {
1016: my ($r,$prog_state,$extraInfo,$step)=@_;
1017: $step = $step > 0 ? $step : 1;
1018: $$prog_state{'done'} += $step;
1019:
1020: # Catch (max modulo step) <> 0
1021: my $current = $$prog_state{'done'};
1022: my $last = ($$prog_state{'max'} - $current);
1023: if ($last <= 0) {
1024: $last = 1;
1025: $current = $$prog_state{'max'};
1026: }
1027:
1028: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
1029: $current * $last;
1030: $time_est = int($time_est);
1031: #
1032: my $min = int($time_est/60);
1033: my $sec = $time_est % 60;
1034:
1035: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
1036: if ($lasttime > 9) {
1037: $lasttime = int($lasttime);
1038: } elsif ($lasttime < 0.01) {
1039: $lasttime = 0;
1040: } else {
1041: $lasttime = sprintf("%3.2f",$lasttime);
1042: }
1043:
1044: $sec = 0 if ($min >= 10); # Don't show seconds if remaining time >= 10 min.
1045: $sec = 1 if ( ($min == 0) && ($sec == 0) ); # Little cheating: pretend to have 1 second remaining instead of 0 to have something to display
1046:
1047: my $timeinfo =
1048: &mt('[_1]/[_2]:'
1049: .' [quant,_3,minute,minutes,] [quant,_4,second ,seconds ,]remaining'
1050: .' ([quant,_5,second] for '.$extraInfo.')',
1051: $current,
1052: $$prog_state{'max'},
1053: $min,
1054: $sec,
1055: $lasttime);
1056: my $percent=0;
1057: if ($$prog_state{'max'}) {
1058: $percent=int(100.*$current/$$prog_state{'max'});
1059: }
1060: &Apache::loncommon::LCprogressbarUpdate($r,$percent,$timeinfo);
1061: $$prog_state{'laststart'}=&Time::HiRes::time();
1062: }
1063:
1064: # close Progress Line
1065: sub Close_PrgWin {
1066: my ($r,$prog_state)=@_;
1067: &Apache::loncommon::LCprogressbarClose($r);
1068: undef(%$prog_state);
1069: }
1070:
1071: # ------------------------------------------------------- Puts directory header
1072:
1073: sub crumbs {
1074: my ($uri,$target,$prefix,$form,$skiplast)=@_;
1075: # You cannot crumbnify uploaded or adm resources
1076: if ($uri=~/^\/*(uploaded|adm)\//) { return &mt('(Internal Course/Group Content)'); }
1077: if ($target) {
1078: $target = ' target="'.
1079: &Apache::loncommon::escape_single($target).'"';
1080: }
1081: my $output='<span class="LC_filename">';
1082: $output.=$prefix.'/';
1083: if (($env{'user.adv'}) || ($env{'user.author'})) {
1084: my $path=$prefix.'/';
1085: foreach my $dir (split('/',$uri)) {
1086: if (! $dir) { next; }
1087: $path .= $dir;
1088: if ($path eq $uri) {
1089: if ($skiplast) {
1090: $output.=$dir;
1091: last;
1092: }
1093: } else {
1094: $path.='/';
1095: }
1096: my $href_path = &HTML::Entities::encode($path,'<>&"');
1097: &Apache::loncommon::inhibit_menu_check(\$href_path);
1098: if ($form) {
1099: my $href = 'javascript:'.$form.".action='".$href_path."';".$form.'.submit();';
1100: $output.=qq{<a href="$href"$target>$dir</a>/};
1101: } else {
1102: $output.=qq{<a href="$href_path"$target>$dir</a>/};
1103: }
1104: }
1105: } else {
1106: foreach my $dir (split('/',$uri)) {
1107: if (! $dir) { next; }
1108: $output.=$dir.'/';
1109: }
1110: }
1111: if ($uri !~ m|/$|) { $output=~s|/$||; }
1112: $output.='</span>';
1113:
1114:
1115: return $output;
1116: }
1117:
1118: # --------------------- A function that generates a window for the spellchecker
1119:
1120: sub spellheader {
1121: my $start_page=
1122: &Apache::loncommon::start_page('Speller Suggestions',undef,
1123: {'only_body' => 1,
1124: 'js_ready' => 1,
1125: 'bgcolor' => '#DDDDDD',
1126: 'add_entries' => {
1127: 'onload' =>
1128: 'document.forms.spellcheckform.submit()',
1129: }
1130: });
1131: my $end_page=
1132: &Apache::loncommon::end_page({'js_ready' => 1});
1133:
1134: my $nothing=&javascript_nothing();
1135: return (<<ENDCHECK);
1136: <script type="text/javascript">
1137: // <![CDATA[
1138: //<!-- BEGIN LON-CAPA Internal
1139: var checkwin;
1140:
1141: function spellcheckerwindow(string) {
1142: var esc_string = string.replace(/\"/g,'"');
1143: checkwin=window.open($nothing,'spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
1144: checkwin.document.writeln('$start_page<form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="'+esc_string+'" /><\\/form>$end_page');
1145: checkwin.document.close();
1146: }
1147: // END LON-CAPA Internal -->
1148: // ]]>
1149: </script>
1150: ENDCHECK
1151: }
1152:
1153: # ---------------------------------- Generate link to spell checker for a field
1154:
1155: sub spelllink {
1156: my ($form,$field)=@_;
1157: my $linktext=&mt('Check Spelling');
1158: return (<<ENDLINK);
1159: <a href="javascript:if (typeof(document.$form.onsubmit)!='undefined') { if (document.$form.onsubmit!=null) { document.$form.onsubmit();}};spellcheckerwindow(this.document.forms.$form.$field.value);">$linktext</a>
1160: ENDLINK
1161: }
1162:
1163: # ------------------------------------------------- Output headers for CKEditor
1164:
1165: sub htmlareaheaders {
1166: my $s="";
1167: if (&htmlareabrowser()) {
1168: $s.=(<<ENDEDITOR);
1169: <script type="text/javascript" src="/ckeditor/ckeditor.js"></script>
1170: ENDEDITOR
1171: }
1172: $s.=(<<ENDJQUERY);
1173: <script type="text/javascript" src="/adm/jQuery/js/jquery-1.6.2.min.js"></script>
1174: <script type="text/javascript" src="/adm/jQuery/js/jquery-ui-1.8.16.custom.min.js"></script>
1175: <link rel="stylesheet" type="text/css" href="/adm/jQuery/css/smoothness/jquery-ui-1.8.16.custom.css" />
1176: <script type="text/javascript" src="/adm/jpicker/js/jpicker-1.1.6.min.js" >
1177: </script>
1178: <link rel="stylesheet" type="text/css" href="/adm/jpicker/css/jPicker-1.1.6.min.css" />
1179: <script type='text/javascript' src='/adm/countdown/js/jquery.countdown.js'></script>
1180: <link rel="stylesheet" type="text/css" src='/adm/countdown/css/jquery.countdown.css' />
1181: ENDJQUERY
1182: return $s;
1183: }
1184:
1185: # ----------------------------------------------------------------- Preferences
1186:
1187: # ------------------------------------------------- lang to use in html editor
1188: sub htmlarea_lang {
1189: my $lang='en';
1190: if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
1191: $lang=&mt('htmlarea_lang');
1192: }
1193: return $lang;
1194: }
1195:
1196: # ----------------------------------------- Script to activate only some fields
1197:
1198: sub htmlareaselectactive {
1199: my ($args) = @_;
1200: unless (&htmlareabrowser()) { return ''; }
1201: my $output='<script type="text/javascript" defer="defer">'."\n"
1202: .'// <![CDATA['."\n";
1203: my $lang = &htmlarea_lang();
1204: my $fullpage = 'false';
1205: my ($dragmath_prefix,$dragmath_helpicon,$dragmath_whitespace);
1206: if (ref($args) eq 'HASH') {
1207: if (exists($args->{'lang'})) {
1208: if ($args->{'lang'} ne '') {
1209: $lang = $args->{'lang'};
1210: }
1211: }
1212: if (exists($args->{'fullpage'})) {
1213: if ($args->{'fullpage'} eq 'true') {
1214: $fullpage = $args->{'fullpage'};
1215: }
1216: }
1217: if (exists($args->{'dragmath'})) {
1218: if ($args->{'dragmath'} ne '') {
1219: $dragmath_prefix = $args->{'dragmath'};
1220: $dragmath_helpicon=&Apache::loncommon::lonhttpdurl("/adm/help/help.png");
1221: $dragmath_whitespace=&Apache::loncommon::lonhttpdurl("/adm/lonIcons/transparent1x1.gif");
1222: }
1223: }
1224: }
1225: $output.='
1226:
1227: function containsBlockHtml(id) {
1228: var re = $("#"+id).html().search(/(?:\<\;|\<)(br|h1|h2|h3|h4|h5|h6|p|ol|ul|table|pre|address|blockquote|center|div)[\s]*((?:[\/]*[\s]*(?:\>\;|\>)|(?:\>\;|\>)[\s\S]*(?:\<\;|\<)\/[\s]*\1[\s]*\(?:\>\;|\>))/im);
1229: return (re >= 0);
1230: }
1231:
1232: function startRichEditor(id) {
1233: CKEDITOR.replace(id,
1234: {
1235: customConfig: "/ckeditor/loncapaconfig.js",
1236: language : "'.$lang.'",
1237: fullPage : '.$fullpage.',
1238: }
1239: );
1240: }
1241:
1242: function destroyRichEditor(id) {
1243: CKEDITOR.instances[id].destroy();
1244: }
1245:
1246: function editorHandler(event) {
1247: var rawid = $(this).attr("id");
1248: var id = new RegExp("LC_rt_(.*)").exec(rawid)[1];
1249: event.preventDefault();
1250: var rt_enabled = $(this).hasClass("LC_enable_rt");
1251: if (rt_enabled) {
1252: startRichEditor(id);
1253: $("#LC_rt_"+id).html("<b>« Plain text</b>");
1254: $("#LC_rt_"+id).attr("title", "Disable rich text formatting and edit in plain text");
1255: $("#LC_rt_"+id).addClass("LC_disable_rt");
1256: $("#LC_rt_"+id).removeClass("LC_enable_rt");
1257: } else {
1258: destroyRichEditor(id);
1259: $("#LC_rt_"+id).html("<b>Rich formatting »</b>");
1260: $("#LC_rt_"+id).attr("title", "Enable rich text formatting (bold, italic, etc.)");
1261: $("#LC_rt_"+id).addClass("LC_enable_rt");
1262: $("#LC_rt_"+id).removeClass("LC_disable_rt");
1263: }';
1264: if ($dragmath_prefix ne '') {
1265: $output .= "\n var visible = '';
1266: if (rt_enabled) {
1267: visible = 'none';
1268: }
1269: editmath_visibility(id,visible);\n";
1270: }
1271: $output .= '
1272: }
1273: $(document).ready(function(){
1274: $(".LC_richAlwaysOn").each(function() {
1275: startRichEditor($(this).attr("id"));
1276: });
1277: $(".LC_richDetectHtml").each(function() {
1278: var id = $(this).attr("id");
1279: var rt_enabled = containsBlockHtml(id);
1280: if(rt_enabled) {
1281: $(this).before("<div><a href=\"#\" id=\"LC_rt_"+id+"\" title=\"Disable rich text formatting and edit in plain text\" class=\"LC_disable_rt\"><b>« Plain text</b></a></div>");
1282: startRichEditor(id);
1283: $("#LC_rt_"+id).click(editorHandler);
1284: }
1285: else {
1286: $(this).before("<div><a href=\"#\" id=\"LC_rt_"+id+"\" title=\"Enable rich text formatting (bold, italic, etc.)\" class=\"LC_enable_rt\"><b>Rich formatting »</b></a></div>");
1287: $("#LC_rt_"+id).click(editorHandler);
1288: }';
1289: if ($dragmath_prefix ne '') {
1290: $output .= "\n var visible = '';
1291: if (rt_enabled) {
1292: visible = 'none';
1293: }
1294: editmath_visibility(id,visible);\n";
1295: }
1296: $output .= '
1297: });
1298: $(".LC_richDefaultOn").each(function() {
1299: var id = $(this).attr("id");
1300: $(this).before("<div><a href=\"#\" id=\"LC_rt_"+id+"\" title=\"Disable rich text formatting and edit in plain text\" class=\"LC_disable_rt\"><b>« Plain text</b></a></div>");
1301: startRichEditor(id);
1302: $("#LC_rt_"+id).click(editorHandler);
1303: });
1304: $(".LC_richDefaultOff").each(function() {
1305: var id = $(this).attr("id");
1306: $(this).before("<div><a href=\"#\" id=\"LC_rt_"+id+"\" title=\"Enable rich text formatting (bold, italic, etc.)\" class=\"LC_enable_rt\"><b>Rich formatting »</b></a></div>");
1307: $("#LC_rt_"+id).click(editorHandler);
1308: });
1309: $.fn.jPicker.defaults.images.clientPath="/adm/jpicker/images/";
1310: $(".colorchooser").jPicker();
1311:
1312:
1313: });
1314: ';
1315: # Code to put a due date countdown in 'duedatecountdown' span.
1316: # This is currently located in the breadcrumb headers.
1317: # note that the dueDateLayout is internatinoalized below.
1318: # Here document is used to support the substitution into the javascript below.
1319: # ..which unfortunately necessitates escaping the $'s in the javascript.
1320:
1321: my $dueDateLayout = '<b>' . &mt('Due in: {dn} {dl} {hnn}{sep}{mnn}{sep}{snn}') . '</b>';
1322: $output .= <<JAVASCRIPT;
1323: \$(document).ready(function() {
1324: if (typeof(dueDate) != "undefined") {
1325: \$("#duedatecountdown").countdown({until: dueDate, compact: true,
1326: layout: "$dueDateLayout",
1327: onTick: function (periods) {
1328: if(\$.countdown.periodsToSeconds(periods) < 60) {
1329: \$(this).css("color", "red"); //Highlight last minute.
1330: }
1331: }
1332: });
1333: }
1334: });
1335: JAVASCRIPT
1336: if ($dragmath_prefix ne '') {
1337: $output .= '
1338:
1339: function editmath_visibility(id,value) {
1340:
1341: if ((id == "") || (id == null)) {
1342: return;
1343: }
1344: var mathid = "'.$dragmath_prefix.'_"+id;
1345: mathele = document.getElementById(mathid);
1346: if (mathele == null) {
1347: return;
1348: }
1349: mathele.style.display = value;
1350: var mathhelpicon = "'.$dragmath_prefix.'helpicon'.'_"+id;
1351: mathhelpiconele = document.getElementById(mathhelpicon);
1352: if (mathhelpiconele == null) {
1353: return;
1354: }
1355: if (value == "none") {
1356: mathhelpiconele.src = "'.$dragmath_whitespace.'";
1357: } else {
1358: mathhelpiconele.src = "'.$dragmath_helpicon.'";
1359: }
1360: }
1361: ';
1362:
1363: }
1364: $output.="\nwindow.status='Activated Editfields';\n"
1365: .'// ]]>'."\n"
1366: .'</script>';
1367: return $output;
1368: }
1369:
1370: # --------------------------------------------------------------------- Blocked
1371:
1372: sub htmlareablocked {
1373: unless ($env{'environment.wysiwygeditor'} eq 'on') { return 1; }
1374: return 0;
1375: }
1376:
1377: # ---------------------------------------- Browser capable of running HTMLArea?
1378:
1379: sub htmlareabrowser {
1380: return 1;
1381: }
1382:
1383: #
1384: # Should the "return to content" link be shown?
1385: #
1386:
1387: sub show_return_link {
1388:
1389: unless ($env{'request.course.id'}) { return 0; }
1390: if ($env{'request.noversionuri'}=~m{^/priv/} ||
1391: $env{'request.uri'}=~m{^/~}) { return 1; }
1392:
1393: if (($env{'request.noversionuri'} =~ m{^/adm/(viewclasslist|navmaps)($|\?)})
1394: || ($env{'request.noversionuri'} =~ m{^/adm/.*/aboutme($|\?)})) {
1395:
1396: return if ($env{'form.register'});
1397: }
1398: return (($env{'request.noversionuri'}=~m{^/(res|public)/} &&
1399: $env{'request.symb'} eq '')
1400: ||
1401: ($env{'request.noversionuri'}=~ m{^/cgi-bin/printout.pl})
1402: ||
1403: (($env{'request.noversionuri'}=~/^\/adm\//) &&
1404: ($env{'request.noversionuri'}!~/^\/adm\/wrapper\//) &&
1405: ($env{'request.noversionuri'}!~
1406: m{^/adm/.*/(smppg|bulletinboard)($|\?)})
1407: ));
1408: }
1409:
1410:
1411: ##
1412: # Set the dueDate variable...note this is done in the timezone
1413: # of the browser.
1414: #
1415: # @param epoch relative time at which the problem is due.
1416: #
1417: # @return the javascript fragment to set the date:
1418: #
1419: sub set_due_date {
1420: my $dueStamp = shift;
1421: my $duems = $dueStamp * 1000; # Javascript Date object needs ms not seconds.
1422:
1423: my $now = time()*1000;
1424:
1425: # This slightly obscure bit of javascript sets the dueDate variable
1426: # to the time in the browser at which the problem was due.
1427: # The code should correct for gross differences between the server
1428: # and client's time setting
1429:
1430: my $js = "
1431: <script type='text/javascript'>
1432: //<![CDATA[
1433: var serverDueDate = $duems;
1434: var serverTime = $now;
1435: var clientTime = (new Date()).getTime();
1436: var dueDate = new Date(serverDueDate + (clientTime - serverTime));
1437:
1438: //]]>
1439: </script>
1440: ";
1441:
1442: }
1443:
1444: ############################################################
1445: ############################################################
1446:
1447: =pod
1448:
1449: =item breadcrumbs
1450:
1451: Compiles the previously registered breadcrumbs into an series of links.
1452: Additionally supports a 'component', which will be displayed on the
1453: right side of the breadcrumbs enclosing div (without a link).
1454: A link to help for the component will be included if one is specified.
1455:
1456: All inputs can be undef without problems.
1457:
1458: Inputs: $component (the text on the right side of the breadcrumbs trail),
1459: $component_help
1460: $menulink (boolean, controls whether to include a link to /adm/menu)
1461: $helplink (if 'nohelp' don't include the orange help link)
1462: $css_class (optional name for the class to apply to the table for CSS)
1463: $no_mt (optional flag, 1 if &mt() is _not_ to be applied to $component
1464: when including the text on the right.
1465: Returns a string containing breadcrumbs for the current page.
1466:
1467: =item clear_breadcrumbs
1468:
1469: Clears the previously stored breadcrumbs.
1470:
1471: =item add_breadcrumb
1472:
1473: Pushes a breadcrumb on the stack of crumbs.
1474:
1475: input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
1476: are required. If present the keys 'faq' and 'bug' will be used to provide
1477: links to the FAQ and bug sites. If the key 'no_mt' is present the 'title'
1478: and 'text' values won't be sent through &mt()
1479:
1480: returns: nothing
1481:
1482: =cut
1483:
1484: ############################################################
1485: ############################################################
1486: {
1487: my @Crumbs;
1488: my %tools = ();
1489:
1490: sub breadcrumbs {
1491: my ($component,$component_help,$menulink,$helplink,$css_class,$no_mt, $CourseBreadcrumbs) = @_;
1492: #
1493: $css_class ||= 'LC_breadcrumbs';
1494:
1495: # Make the faq and bug data cascade
1496: my $faq = '';
1497: my $bug = '';
1498: my $help = '';
1499: # Crumb Symbol
1500: my $crumbsymbol = '»';
1501: # The last breadcrumb does not have a link, so handle it separately.
1502: my $last = pop(@Crumbs);
1503: #
1504: # The first one should be the course or a menu link
1505: if (!defined($menulink)) { $menulink=1; }
1506: if ($menulink) {
1507: my $description = 'Menu';
1508: my $no_mt_descr = 0;
1509: if ((exists($env{'request.course.id'})) &&
1510: ($env{'request.course.id'} ne '') &&
1511: ($env{'course.'.$env{'request.course.id'}.'.description'} ne '')) {
1512: $description =
1513: $env{'course.'.$env{'request.course.id'}.'.description'};
1514: $no_mt_descr = 1;
1515: }
1516: $menulink = { href =>'/adm/menu',
1517: title =>'Go to main menu',
1518: target =>'_top',
1519: text =>$description,
1520: no_mt =>$no_mt_descr, };
1521: if($last) {
1522: #$last set, so we have some crumbs
1523: unshift(@Crumbs,$menulink);
1524: } else {
1525: #only menulink crumb present
1526: $last = $menulink;
1527: }
1528: }
1529: my $links;
1530: if ((&show_return_link) && (!$CourseBreadcrumbs)) {
1531: my $alttext = &mt('Go Back');
1532: $links=&htmltag( 'a',"<img src='/res/adm/pages/reload.png' border='0' style='vertical-align:middle;' alt='$alttext' />",
1533: { href => '/adm/flip?postdata=return:',
1534: title => &mt("Back to most recent content resource") });
1535: $links=&htmltag('li',$links);
1536: }
1537: $links.= join "",
1538: map {
1539: $faq = $_->{'faq'} if (exists($_->{'faq'}));
1540: $bug = $_->{'bug'} if (exists($_->{'bug'}));
1541: $help = $_->{'help'} if (exists($_->{'help'}));
1542:
1543: my $result = $_->{no_mt} ? $_->{text} : &mt($_->{text});
1544:
1545: if ($_->{href}){
1546: $result = &htmltag( 'a', $result,
1547: { href => $_->{href},
1548: title => $_->{no_mt} ? $_->{title} : &mt($_->{title}),
1549: target => $_->{target}, });
1550: }
1551:
1552: $result = &htmltag( 'li', "$result $crumbsymbol");
1553: } @Crumbs;
1554:
1555: #should the last Element be translated?
1556:
1557: my $lasttext = $last->{'no_mt'} ? $last->{'text'}
1558: : mt( $last->{'text'} );
1559:
1560: # last breadcrumb is the first order heading of a page
1561: # for course breadcrumbs it's just bold
1562:
1563: $links .= &htmltag( 'li', htmltag($CourseBreadcrumbs ? 'b' : 'h1',
1564: $lasttext), {title => $lasttext});
1565:
1566: $links .= '<li> <span id="duedatecountdown"></span></li>';
1567:
1568: my $icons = '';
1569: $faq = $last->{'faq'} if (exists($last->{'faq'}));
1570: $bug = $last->{'bug'} if (exists($last->{'bug'}));
1571: $help = $last->{'help'} if (exists($last->{'help'}));
1572: $component_help=($component_help?$component_help:$help);
1573: # if ($faq ne '') {
1574: # $icons .= &Apache::loncommon::help_open_faq($faq);
1575: # }
1576: # if ($bug ne '') {
1577: # $icons .= &Apache::loncommon::help_open_bug($bug);
1578: # }
1579: if ($faq ne '' || $component_help ne '' || $bug ne '') {
1580: $icons .= &Apache::loncommon::help_open_menu($component,
1581: $component_help,
1582: $faq,$bug);
1583: }
1584: #
1585:
1586:
1587:
1588: unless ($CourseBreadcrumbs) {
1589: $links = &htmltag('ol', $links, { id => "LC_MenuBreadcrumbs" });
1590: } else {
1591: $links = &htmltag('ul', $links, { class => "LC_CourseBreadcrumbs" });
1592: }
1593:
1594:
1595: if ($component) {
1596: $links = &htmltag('span',
1597: ( $no_mt ? $component : mt($component) ).
1598: ( $icons ? $icons : '' ),
1599: { class => 'LC_breadcrumbs_component' } )
1600: .$links
1601: ;
1602: }
1603:
1604: &render_tools(\$links);
1605: $links = &htmltag('div', $links,
1606: { id => "LC_breadcrumbs" }) unless ($CourseBreadcrumbs) ;
1607: &render_advtools(\$links);
1608:
1609: # Return the @Crumbs stack to what we started with
1610: push(@Crumbs,$last);
1611: shift(@Crumbs);
1612:
1613:
1614: # Return the breadcrumb's line
1615:
1616:
1617:
1618: return "$links";
1619: }
1620:
1621: sub clear_breadcrumbs {
1622: undef(@Crumbs);
1623: undef(%tools);
1624: }
1625:
1626: sub add_breadcrumb {
1627: push(@Crumbs,@_);
1628: }
1629:
1630: =item add_breadcrumb_tool($category, $html)
1631:
1632: Adds $html to $category of the breadcrumb toolbar container.
1633:
1634: $html is usually a link to a page that invokes a function on the currently
1635: displayed data (e.g. print when viewing a problem)
1636:
1637: Currently there are 3 possible values for $category:
1638:
1639: =over
1640:
1641: =item navigation
1642: left of breadcrumbs line
1643:
1644: =item tools
1645: right of breadcrumbs line
1646:
1647: =item advtools
1648: advanced tools shown in a separate box below breadcrumbs line
1649:
1650: =back
1651:
1652: returns: nothing
1653:
1654: =cut
1655:
1656: sub add_breadcrumb_tool {
1657: my ($category, @html) = @_;
1658: return unless @html;
1659: if (!keys(%tools)) {
1660: %tools = ( navigation => [], tools => [], advtools => []);
1661: }
1662:
1663: #this cleans data received from lonmenu::innerregister
1664: @html = grep {defined $_ && $_ ne ''} @html;
1665: for (@html) {
1666: s/align="(right|left)"//;
1667: # s/<span.*?\/span>// if $category ne 'advtools';
1668: }
1669:
1670: push @{$tools{$category}}, @html;
1671: }
1672:
1673: =item clear_breadcrumb_tools()
1674:
1675: Clears the breadcrumb toolbar container.
1676:
1677: returns: nothing
1678:
1679: =cut
1680:
1681: sub clear_breadcrumb_tools {
1682: undef(%tools);
1683: }
1684:
1685: =item render_tools(\$breadcrumbs)
1686:
1687: Creates html for breadcrumb tools (categories navigation and tools) and inserts
1688: \$breadcrumbs at the correct position.
1689:
1690: input: \$breadcrumbs - a reference to the string containing prepared
1691: breadcrumbs.
1692:
1693: returns: nothing
1694: =cut
1695:
1696: #TODO might split this in separate functions for each category
1697: sub render_tools {
1698: my ($breadcrumbs) = @_;
1699: return unless (keys(%tools));
1700:
1701: my $navigation = list_from_array($tools{navigation},
1702: { listattr => { class=>"LC_breadcrumb_tools_navigation" } });
1703: my $tools = list_from_array($tools{tools},
1704: { listattr => { class=>"LC_breadcrumb_tools_tools" } });
1705: $$breadcrumbs = list_from_array([$navigation, $tools, $$breadcrumbs],
1706: { listattr => { class=>'LC_breadcrumb_tools_outerlist' } });
1707: }
1708:
1709: =item render_advtools(\$breadcrumbs)
1710:
1711: Creates html for advanced tools (category advtools) and inserts \$breadcrumbs
1712: at the correct position.
1713:
1714: input: \$breadcrumbs - a reference to the string containing prepared
1715: breadcrumbs (after render_tools call).
1716:
1717: returns: nothing
1718: =cut
1719:
1720: sub render_advtools {
1721: my ($breadcrumbs) = @_;
1722: return unless (defined $tools{'advtools'})
1723: and (scalar(@{$tools{'advtools'}}) > 0);
1724:
1725: $$breadcrumbs .= Apache::loncommon::head_subbox(
1726: funclist_from_array($tools{'advtools'}) );
1727: }
1728:
1729: } # End of scope for @Crumbs
1730:
1731: ############################################################
1732: ############################################################
1733:
1734: # Nested table routines.
1735: #
1736: # Routines to display form items in a multi-row table with 2 columns.
1737: # Uses nested tables to divide form elements into segments.
1738: # For examples of use see loncom/interface/lonnotify.pm
1739: #
1740: # Can be used in following order: ...
1741: # &start_pick_box()
1742: # row1
1743: # row2
1744: # row3 ... etc.
1745: # &submit_row()
1746: # &end_pick_box()
1747: #
1748: # where row1, row 2 etc. are chosen from &role_select_row,&course_select_row,
1749: # &status_select_row and &email_default_row
1750: #
1751: # Can also be used in following order:
1752: #
1753: # &start_pick_box()
1754: # &row_title()
1755: # &row_closure()
1756: # &row_title()
1757: # &row_closure() ... etc.
1758: # &submit_row()
1759: # &end_pick_box()
1760: #
1761: # In general a &submit_row() call should proceed the call to &end_pick_box(),
1762: # as this routine adds a button for form submission.
1763: # &submit_row() does not require a &row_closure after it.
1764: #
1765: # &start_pick_box() creates a bounding table with 1-pixel wide black border.
1766: # rows should be placed between calls to &start_pick_box() and &end_pick_box.
1767: #
1768: # &row_title() adds a title in the left column for each segment.
1769: # &row_closure() closes a row with a 1-pixel wide black line.
1770: #
1771: # &role_select_row() provides a select box from which to choose 1 or more roles
1772: # &course_select_row provides ways of picking groups of courses
1773: # radio buttons: all, by category or by picking from a course picker pop-up
1774: # note: by category option is only displayed if a domain has implemented
1775: # selection by year, semester, department, number etc.
1776: #
1777: # &status_select_row() provides a select box from which to choose 1 or more
1778: # access types (current access, prior access, and future access)
1779: #
1780: # &email_default_row() provides text boxes for default e-mail suffixes for
1781: # different authentication types in a domain.
1782: #
1783: # &row_title() and &row_closure() are called internally by the &*_select_row
1784: # routines, but can also be called directly to start and end rows which have
1785: # needs that are not accommodated by the *_select_row() routines.
1786:
1787: { # Start: row_count block for pick_box
1788: my @row_count;
1789:
1790: sub start_pick_box {
1791: my ($css_class) = @_;
1792: if (defined($css_class)) {
1793: $css_class = 'class="'.$css_class.'"';
1794: } else {
1795: $css_class= 'class="LC_pick_box"';
1796: }
1797: unshift(@row_count,0);
1798: my $output = <<"END";
1799: <table $css_class>
1800: END
1801: return $output;
1802: }
1803:
1804: sub end_pick_box {
1805: shift(@row_count);
1806: my $output = <<"END";
1807: </table>
1808: END
1809: return $output;
1810: }
1811:
1812: sub row_headline {
1813: my $output = <<"END";
1814: <tr><td colspan="2">
1815: END
1816: return $output;
1817: }
1818:
1819: sub row_title {
1820: my ($title,$css_title_class,$css_value_class, $css_value_furtherAttributes) = @_;
1821: $row_count[0]++;
1822: my $css_class = ($row_count[0] % 2)?'LC_odd_row':'LC_even_row';
1823: $css_title_class ||= 'LC_pick_box_title';
1824: $css_title_class = 'class="'.$css_title_class.'"';
1825:
1826: $css_value_class ||= 'LC_pick_box_value';
1827:
1828: if ($title ne '') {
1829: $title .= ':';
1830: }
1831: my $output = <<"ENDONE";
1832: <tr class="LC_pick_box_row" $css_value_furtherAttributes>
1833: <td $css_title_class>
1834: $title
1835: </td>
1836: <td class="$css_value_class $css_class">
1837: ENDONE
1838: return $output;
1839: }
1840:
1841: sub row_closure {
1842: my ($no_separator) =@_;
1843: my $output = <<"ENDTWO";
1844: </td>
1845: </tr>
1846: ENDTWO
1847: if (!$no_separator) {
1848: $output .= <<"ENDTWO";
1849: <tr>
1850: <td colspan="2" class="LC_pick_box_separator">
1851: </td>
1852: </tr>
1853: ENDTWO
1854: }
1855: return $output;
1856: }
1857:
1858: } # End: row_count block for pick_box
1859:
1860: sub role_select_row {
1861: my ($roles,$title,$css_class,$show_separate_custom,$cdom,$cnum) = @_;
1862: my $crstype = 'Course';
1863: if ($cdom ne '' && $cnum ne '') {
1864: $crstype = &Apache::loncommon::course_type($cdom.'_'.$cnum);
1865: }
1866: my $output;
1867: if (defined($title)) {
1868: $output = &row_title($title,$css_class);
1869: }
1870: $output .= qq|
1871: <select name="roles" multiple="multiple">\n|;
1872: foreach my $role (@$roles) {
1873: my $plrole;
1874: if ($role eq 'ow') {
1875: $plrole = &mt('Course Owner');
1876: } elsif ($role eq 'cr') {
1877: if ($show_separate_custom) {
1878: if ($cdom ne '' && $cnum ne '') {
1879: my %course_customroles = &course_custom_roles($cdom,$cnum);
1880: foreach my $crrole (sort(keys(%course_customroles))) {
1881: my ($plcrrole) = ($crrole =~ m|^cr/[^/]+/[^/]+/(.+)$|);
1882: $output .= ' <option value="'.$crrole.'">'.$plcrrole.
1883: '</option>';
1884: }
1885: }
1886: } else {
1887: $plrole = &mt('Custom Role');
1888: }
1889: } else {
1890: $plrole=&Apache::lonnet::plaintext($role,$crstype);
1891: }
1892: if (($role ne 'cr') || (!$show_separate_custom)) {
1893: $output .= ' <option value="'.$role.'">'.$plrole.'</option>';
1894: }
1895: }
1896: $output .= qq| </select>\n|;
1897: if (defined($title)) {
1898: $output .= &row_closure();
1899: }
1900: return $output;
1901: }
1902:
1903: sub course_select_row {
1904: my ($title,$formname,$totcodes,$codetitles,$idlist,$idlist_titles,
1905: $css_class,$crstype,$standardnames) = @_;
1906: my $output = &row_title($title,$css_class);
1907: $output .= &course_selection($formname,$totcodes,$codetitles,$idlist,$idlist_titles,$crstype,$standardnames);
1908: $output .= &row_closure();
1909: return $output;
1910: }
1911:
1912: sub course_selection {
1913: my ($formname,$totcodes,$codetitles,$idlist,$idlist_titles,$crstype,$standardnames) = @_;
1914: my $output = qq|
1915: <script type="text/javascript">
1916: // <![CDATA[
1917: function coursePick (formname) {
1918: for (var i=0; i<formname.coursepick.length; i++) {
1919: if (formname.coursepick[i].value == 'category') {
1920: courseSet('');
1921: }
1922: if (!formname.coursepick[i].checked) {
1923: if (formname.coursepick[i].value == 'specific') {
1924: formname.coursetotal.value = 0;
1925: formname.courselist = '';
1926: }
1927: }
1928: }
1929: }
1930: function setPick (formname) {
1931: for (var i=0; i<formname.coursepick.length; i++) {
1932: if (formname.coursepick[i].value == 'category') {
1933: formname.coursepick[i].checked = true;
1934: }
1935: formname.coursetotal.value = 0;
1936: formname.courselist = '';
1937: }
1938: }
1939: // ]]>
1940: </script>
1941: |;
1942:
1943: my ($allcrs,$pickspec);
1944: if ($crstype eq 'Community') {
1945: $allcrs = &mt('All communities');
1946: $pickspec = &mt('Pick specific communities:');
1947: } else {
1948: $allcrs = &mt('All courses');
1949: $pickspec = &mt('Pick specific course(s):');
1950: }
1951:
1952: my $courseform='<b>'.&Apache::loncommon::selectcourse_link
1953: ($formname,'pickcourse','pickdomain','coursedesc','',1,$crstype).'</b>';
1954: $output .= '<input type="radio" name="coursepick" value="all" onclick="coursePick(this.form)" />'.$allcrs.'<br />';
1955: if ($totcodes > 0) {
1956: my $numtitles = @$codetitles;
1957: if ($numtitles > 0) {
1958: $output .= '<input type="radio" name="coursepick" value="category" onclick="coursePick(this.form);alert('."'".&mt('Choose categories, from left to right')."'".')" />'.&mt('Pick courses by category:').' <br />';
1959: $output .= '<table><tr><td>'.$$codetitles[0].'<br />'."\n".
1960: '<select name="'.$standardnames->[0].
1961: '" onChange="setPick(this.form);courseSet('."'$$codetitles[0]'".')">'."\n".
1962: ' <option value="-1" />Select'."\n";
1963: my @items = ();
1964: my @longitems = ();
1965: if ($$idlist{$$codetitles[0]} =~ /","/) {
1966: @items = split(/","/,$$idlist{$$codetitles[0]});
1967: } else {
1968: $items[0] = $$idlist{$$codetitles[0]};
1969: }
1970: if (defined($$idlist_titles{$$codetitles[0]})) {
1971: if ($$idlist_titles{$$codetitles[0]} =~ /","/) {
1972: @longitems = split(/","/,$$idlist_titles{$$codetitles[0]});
1973: } else {
1974: $longitems[0] = $$idlist_titles{$$codetitles[0]};
1975: }
1976: for (my $i=0; $i<@longitems; $i++) {
1977: if ($longitems[$i] eq '') {
1978: $longitems[$i] = $items[$i];
1979: }
1980: }
1981: } else {
1982: @longitems = @items;
1983: }
1984: for (my $i=0; $i<@items; $i++) {
1985: $output .= ' <option value="'.$items[$i].'">'.$longitems[$i].'</option>';
1986: }
1987: $output .= '</select></td>';
1988: for (my $i=1; $i<$numtitles; $i++) {
1989: $output .= '<td>'.$$codetitles[$i].'<br />'."\n".
1990: '<select name="'.$standardnames->[$i].
1991: '" onChange="courseSet('."'$$codetitles[$i]'".')">'."\n".
1992: '<option value="-1"><-Pick '.$$codetitles[$i-1].'</option>'."\n".
1993: '</select>'."\n".
1994: '</td>';
1995: }
1996: $output .= '</tr></table><br />';
1997: }
1998: }
1999: $output .= '<input type="radio" name="coursepick" value="specific" onclick="coursePick(this.form);opencrsbrowser('."'".$formname."','dccourse','dcdomain','coursedesc','','1','$crstype'".')" />'.$pickspec.' '.$courseform.' <input type="text" value="0" size="4" name="coursetotal" /><input type="hidden" name="courselist" value="" />selected.<br />'."\n";
2000: return $output;
2001: }
2002:
2003: sub status_select_row {
2004: my ($types,$title,$css_class) = @_;
2005: my $output;
2006: if (defined($title)) {
2007: $output = &row_title($title,$css_class,'LC_pick_box_select');
2008: }
2009: $output .= qq|
2010: <select name="types" multiple="multiple">\n|;
2011: foreach my $status_type (sort(keys(%{$types}))) {
2012: $output .= ' <option value="'.$status_type.'">'.$$types{$status_type}.'</option>';
2013: }
2014: $output .= qq| </select>\n|;
2015: if (defined($title)) {
2016: $output .= &row_closure();
2017: }
2018: return $output;
2019: }
2020:
2021: sub email_default_row {
2022: my ($authtypes,$title,$descrip,$css_class) = @_;
2023: my $output = &row_title($title,$css_class);
2024: $output .= $descrip.
2025: &Apache::loncommon::start_data_table().
2026: &Apache::loncommon::start_data_table_header_row().
2027: '<th>'.&mt('Authentication Method').'</th>'.
2028: '<th align="right">'.&mt('Username -> e-mail conversion').'</th>'."\n".
2029: &Apache::loncommon::end_data_table_header_row();
2030: my $rownum = 0;
2031: foreach my $auth (sort(keys(%{$authtypes}))) {
2032: my ($userentry,$size);
2033: if ($auth =~ /^krb/) {
2034: $userentry = '';
2035: $size = 25;
2036: } else {
2037: $userentry = 'username@';
2038: $size = 15;
2039: }
2040: $output .= &Apache::loncommon::start_data_table_row().
2041: '<td> '.$$authtypes{$auth}.'</td>'.
2042: '<td align="right">'.$userentry.
2043: '<input type="text" name="'.$auth.'" size="'.$size.'" /></td>'.
2044: &Apache::loncommon::end_data_table_row();
2045: }
2046: $output .= &Apache::loncommon::end_data_table();
2047: $output .= &row_closure();
2048: return $output;
2049: }
2050:
2051:
2052: sub submit_row {
2053: my ($title,$cmd,$submit_text,$css_class) = @_;
2054: my $output = &row_title($title,$css_class,'LC_pick_box_submit');
2055: $output .= qq|
2056: <br />
2057: <input type="hidden" name="command" value="$cmd" />
2058: <input type="submit" value="$submit_text"/>
2059: <br /><br />
2060: \n|;
2061: return $output;
2062: }
2063:
2064: sub course_custom_roles {
2065: my ($cdom,$cnum) = @_;
2066: my %returnhash=();
2067: my %coursepersonnel=&Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
2068: foreach my $person (sort(keys(%coursepersonnel))) {
2069: my ($role) = ($person =~ /^([^:]+):/);
2070: my ($end,$start) = split(/:/,$coursepersonnel{$person});
2071: if ($end == -1 && $start == -1) {
2072: next;
2073: }
2074: if ($role =~ m|^cr/[^/]+/[^/]+/[^/]|) {
2075: $returnhash{$role} ++;
2076: }
2077: }
2078: return %returnhash;
2079: }
2080:
2081:
2082: sub resource_info_box {
2083: my ($symb,$onlyfolderflag,$stuvcurrent,$stuvdisp)=@_;
2084: my $return='';
2085: if ($stuvcurrent ne '') {
2086: $return = '<div class="LC_left_float">';
2087: }
2088: if ($symb) {
2089: $return.=&Apache::loncommon::start_data_table();
2090: my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symb);
2091: my $folder=&Apache::lonnet::gettitle($map);
2092: $return.=&Apache::loncommon::start_data_table_row().
2093: '<th align="left">'.&mt('Folder:').'</th><td>'.$folder.'</td>'.
2094: &Apache::loncommon::end_data_table_row();
2095: unless ($onlyfolderflag) {
2096: $return.=&Apache::loncommon::start_data_table_row().
2097: '<th align="left">'.&mt('Resource:').'</th><td>'.&Apache::lonnet::gettitle($symb).'</td>'.
2098: &Apache::loncommon::end_data_table_row();
2099: }
2100: if ($stuvcurrent ne '') {
2101: $return .= &Apache::loncommon::start_data_table_row().
2102: '<th align="left">'.&mt("Student's current version:").'</th><td>'.$stuvcurrent.'</td>'.
2103: &Apache::loncommon::end_data_table_row();
2104: }
2105: if ($stuvdisp ne '') {
2106: $return .= &Apache::loncommon::start_data_table_row().
2107: '<th align="left">'.&mt("Student's version displayed:").'</th><td>'.$stuvdisp.'</td>'.
2108: &Apache::loncommon::end_data_table_row();
2109: }
2110: $return.=&Apache::loncommon::end_data_table();
2111: } else {
2112: $return='<p><span class="LC_error">'.&mt('No context provided.').'</span></p>';
2113: }
2114: if ($stuvcurrent ne '') {
2115: $return .= '</div>';
2116: }
2117: return $return;
2118: }
2119:
2120: ##############################################
2121: ##############################################
2122:
2123: # topic_bar
2124: #
2125: # Generates a div containing an (optional) number with a white background followed by a
2126: # title with a background color defined in the corresponding CSS: LC_topic_bar
2127: # Inputs:
2128: # 1. number to display.
2129: # If input for number is empty only the title will be displayed.
2130: # 2. title text to display.
2131: # Outputs - a scalar containing html mark-up for the div.
2132:
2133: sub topic_bar {
2134: my ($num,$title) = @_;
2135: my $number = '';
2136: if ($num ne '') {
2137: $number = '<span>'.$num.'</span>';
2138: }
2139: return '<div class="LC_topic_bar">'.$number.$title.'</div>';
2140: }
2141:
2142: ##############################################
2143: ##############################################
2144: # echo_form_input
2145: #
2146: # Generates html markup to add form elements from the referrer page
2147: # as hidden form elements (values encoded) in the new page.
2148: #
2149: # Intended to support two types of use
2150: # (a) to allow backing up to earlier pages in a multi-page
2151: # form submission process using a breadcrumb trail.
2152: #
2153: # (b) to allow the current page to be reloaded with form elements
2154: # set on previous page to remain unchanged. An example would
2155: # be where the a page containing a dynamically-built table of data is
2156: # is to be redisplayed, with only the sort order of the data changed.
2157: #
2158: # Inputs:
2159: # 1. Reference to array of form elements in the submitted form on
2160: # the referrer page which are to be excluded from the echoed elements.
2161: #
2162: # 2. Reference to array of regular expressions, which if matched in the
2163: # name of the form element n the referrer page will be omitted from echo.
2164: #
2165: # Outputs: A scalar containing the html markup for the echoed form
2166: # elements (all as hidden elements, with values encoded).
2167:
2168:
2169: sub echo_form_input {
2170: my ($excluded,$regexps) = @_;
2171: my $output = '';
2172: foreach my $key (keys(%env)) {
2173: if ($key =~ /^form\.(.+)$/) {
2174: my $name = $1;
2175: my $match = 0;
2176: if (ref($excluded) eq 'ARRAY') {
2177: next if (grep(/^\Q$name\E$/,@{$excluded}));
2178: }
2179: if (ref($regexps) eq 'ARRAY') {
2180: if (@{$regexps} > 0) {
2181: foreach my $regexp (@{$regexps}) {
2182: if ($name =~ /$regexp/) {
2183: $match = 1;
2184: last;
2185: }
2186: }
2187: }
2188: }
2189: next if ($match);
2190: if (ref($env{$key}) eq 'ARRAY') {
2191: foreach my $value (@{$env{$key}}) {
2192: $value = &HTML::Entities::encode($value,'<>&"');
2193: $output .= '<input type="hidden" name="'.$name.
2194: '" value="'.$value.'" />'."\n";
2195: }
2196: } else {
2197: my $value = &HTML::Entities::encode($env{$key},'<>&"');
2198: $output .= '<input type="hidden" name="'.$name.
2199: '" value="'.$value.'" />'."\n";
2200: }
2201: }
2202: }
2203: return $output;
2204: }
2205:
2206: ##############################################
2207: ##############################################
2208: # set_form_elements
2209: #
2210: # Generates javascript to set form elements to values based on
2211: # corresponding values for the same form elements when the page was
2212: # previously submitted.
2213: #
2214: # Last submission values are read from hidden form elements in referring
2215: # page which have the same name, i.e., generated by &echo_form_input().
2216: #
2217: # Intended to be called by onload event.
2218: #
2219: # Inputs:
2220: # (a) Reference to hash of echoed form elements to be set.
2221: #
2222: # In the hash, keys are the form element names, and the values are the
2223: # element type (selectbox, radio, checkbox or text -for textbox, textarea or
2224: # hidden).
2225: #
2226: # (b) Optional reference to hash of stored elements to be set.
2227: #
2228: # If the page being displayed is a page which permits modification of
2229: # previously stored data, e.g., the first page in a multi-page submission,
2230: # then if stored is supplied, form elements will be set to the last stored
2231: # values. If user supplied values are also available for the same elements
2232: # these will replace the stored values.
2233: #
2234: # Output:
2235: #
2236: # javascript function - set_form_elements() which sets form elements,
2237: # expects an argument: formname - the name of the form according to
2238: # the DOM, e.g., document.compose
2239:
2240: sub set_form_elements {
2241: my ($elements,$stored) = @_;
2242: my %values;
2243: my $output .= 'function setFormElements(courseForm) {
2244: ';
2245: if (defined($stored)) {
2246: foreach my $name (keys(%{$stored})) {
2247: if (exists($$elements{$name})) {
2248: if (ref($$stored{$name}) eq 'ARRAY') {
2249: $values{$name} = $$stored{$name};
2250: } else {
2251: @{$values{$name}} = ($$stored{$name});
2252: }
2253: }
2254: }
2255: }
2256:
2257: foreach my $key (keys(%env)) {
2258: if ($key =~ /^form\.(.+)$/) {
2259: my $name = $1;
2260: if (exists($$elements{$name})) {
2261: @{$values{$name}} = &Apache::loncommon::get_env_multiple($key);
2262: }
2263: }
2264: }
2265:
2266: foreach my $name (keys(%values)) {
2267: for (my $i=0; $i<@{$values{$name}}; $i++) {
2268: $values{$name}[$i] = &HTML::Entities::decode($values{$name}[$i],'<>&"');
2269: $values{$name}[$i] =~ s/([\r\n\f]+)/\\n/g;
2270: $values{$name}[$i] =~ s/"/\\"/g;
2271: }
2272: if (($$elements{$name} eq 'text') || ($$elements{$name} eq 'hidden')) {
2273: my $numvalues = @{$values{$name}};
2274: if ($numvalues > 1) {
2275: my $valuestring = join('","',@{$values{$name}});
2276: $output .= qq|
2277: var textvalues = new Array ("$valuestring");
2278: var total = courseForm.elements['$name'].length;
2279: if (total > $numvalues) {
2280: total = $numvalues;
2281: }
2282: for (var i=0; i<total; i++) {
2283: courseForm.elements['$name']\[i].value = textvalues[i];
2284: }
2285: |;
2286: } else {
2287: $output .= qq|
2288: courseForm.elements['$name'].value = "$values{$name}[0]";
2289: |;
2290: }
2291: } else {
2292: $output .= qq|
2293: var elementLength = courseForm.elements['$name'].length;
2294: if (elementLength==undefined) {
2295: |;
2296: foreach my $value (@{$values{$name}}) {
2297: if ($$elements{$name} eq 'selectbox') {
2298: $output .= qq|
2299: if (courseForm.elements['$name'].options[0].value == "$value") {
2300: courseForm.elements['$name'].options[0].selected = true;
2301: }|;
2302: } elsif (($$elements{$name} eq 'radio') ||
2303: ($$elements{$name} eq 'checkbox')) {
2304: $output .= qq|
2305: if (courseForm.elements['$name'].value == "$value") {
2306: courseForm.elements['$name'].checked = true;
2307: } else {
2308: courseForm.elements['$name'].checked = false;
2309: }|;
2310: }
2311: }
2312: $output .= qq|
2313: }
2314: else {
2315: for (var i=0; i<courseForm.elements['$name'].length; i++) {
2316: |;
2317: if ($$elements{$name} eq 'selectbox') {
2318: $output .= qq|
2319: courseForm.elements['$name'].options[i].selected = false;|;
2320: } elsif (($$elements{$name} eq 'radio') ||
2321: ($$elements{$name} eq 'checkbox')) {
2322: $output .= qq|
2323: courseForm.elements['$name']\[i].checked = false;|;
2324: }
2325: $output .= qq|
2326: }
2327: for (var j=0; j<courseForm.elements['$name'].length; j++) {
2328: |;
2329: foreach my $value (@{$values{$name}}) {
2330: if ($$elements{$name} eq 'selectbox') {
2331: $output .= qq|
2332: if (courseForm.elements['$name'].options[j].value == "$value") {
2333: courseForm.elements['$name'].options[j].selected = true;
2334: }|;
2335: } elsif (($$elements{$name} eq 'radio') ||
2336: ($$elements{$name} eq 'checkbox')) {
2337: $output .= qq|
2338: if (courseForm.elements['$name']\[j].value == "$value") {
2339: courseForm.elements['$name']\[j].checked = true;
2340: }|;
2341: }
2342: }
2343: $output .= qq|
2344: }
2345: }
2346: |;
2347: }
2348: }
2349: $output .= "
2350: return;
2351: }\n";
2352: return $output;
2353: }
2354:
2355: ##############################################
2356: ##############################################
2357:
2358: sub file_submissionchk_js {
2359: my ($turninpaths,$multiples) = @_;
2360: my $overwritewarn = &mt('File(s) you uploaded for your submission will overwrite existing file(s) submitted for this item').'\\n'.
2361: &mt('Continue submission and overwrite the file(s)?');
2362: my $delfilewarn = &mt('You have indicated you wish to remove some files previously included in your submission.').'\\n'.
2363: &mt('Continue submission with these files removed?');
2364: my ($turninpathtext,$multtext,$arrayindexofjs);
2365: if (ref($turninpaths) eq 'HASH') {
2366: foreach my $key (sort(keys(%{$turninpaths}))) {
2367: $turninpathtext .= " if (prefix == '$key') {\n".
2368: " return '$turninpaths->{$key}';\n".
2369: " }\n";
2370: }
2371: }
2372: $turninpathtext .= " return '';\n";
2373: if (ref($multiples) eq 'HASH') {
2374: foreach my $key (sort(keys(%{$multiples}))) {
2375: $multtext .= " if (prefix == '$key') {\n".
2376: " return '$multiples->{$key}';\n".
2377: " }\n";
2378: }
2379: }
2380: $multtext .= " return '';\n";
2381:
2382: $arrayindexofjs = &Apache::loncommon::javascript_array_indexof();
2383: return <<"ENDSCRIPT";
2384: <script type="text/javascript">
2385: // <![CDATA[
2386:
2387: function file_submission_check(formname,path,multiresp) {
2388: var elemnum = formname.elements.length;
2389: if (elemnum == 0) {
2390: return true;
2391: }
2392: var alloverwrites = [];
2393: var alldelconfirm = [];
2394: var result = [];
2395: var submitter;
2396: var subprefix;
2397: var allsub = getIndexByName(formname,'all_submit');
2398: if (allsub == -1) {
2399: var idx = getIndexByName(formname,'submitted');
2400: if (idx != -1) {
2401: var subval = String(formname.elements[idx].value);
2402: submitter = subval.replace(/^part_/,'');
2403: result = overwritten_check(formname,path,multiresp,submitter);
2404: alloverwrites.push.apply(alloverwrites,result['overwrite']);
2405: alldelconfirm.push.apply(alldelconfirm,result['delete']);
2406: }
2407: } else {
2408: if (formname.elements[allsub].type == 'submit') {
2409: var partsub = /^\\d+\\.\\d+_submit_.+\$/;
2410: var allprefixes = [];
2411: var allparts = [];
2412: for (var i=0; i<formname.elements.length; i++) {
2413: if (formname.elements[i].type == 'submit') {
2414: var elemname = formname.elements[i].name;
2415: var subname = String(elemname);
2416: var savesub = String(elemname);
2417: if (partsub.test(subname)) {
2418: var prefix = subname.replace(/_submit_.+\$/,'');
2419: if (allprefixes.indexOf(prefix) == -1) {
2420: allprefixes.push(prefix);
2421: allparts[prefix] = [];
2422: }
2423: var part = savesub.replace(/^\\d+\\.\\d+_submit_/,'');
2424: allparts[prefix].push(part);
2425: }
2426: }
2427: }
2428: for (var k=0; k<allprefixes.length; k++) {
2429: var idx = getIndexByName(formname,allprefixes[k]+'_submitted');
2430: if (idx > -1) {
2431: if (formname.elements[idx].value != 'yes') {
2432: submitterval = formname.elements[idx].value;
2433: submitter = submitterval.replace(/^part_/,'');
2434: subprefix = allprefixes[k];
2435: result = overwritten_check(formname,path,multiresp,submitter,subprefix);
2436: alloverwrites.push.apply(alloverwrites,result['overwrite']);
2437: alldelconfirm.push.apply(alldelconfirm,result['delete']);
2438: break;
2439: }
2440: }
2441: }
2442: if (submitter == '' || submitter == undefined) {
2443: for (var m=0; m<allprefixes.length; m++) {
2444: for (var n=0; n<allparts[allprefixes[m]].length; n++) {
2445: var result = overwritten_check(formname,path,multiresp,allparts[allprefixes[m]][n],allprefixes[m]);
2446: alloverwrites.push.apply(alloverwrites,result['overwrite']);
2447: alldelconfirm.push.apply(alldelconfirm,result['delete']);
2448: }
2449: }
2450: }
2451: }
2452: }
2453: if (alloverwrites.length > 0) {
2454: if (!confirm("$overwritewarn")) {
2455: for (var n=0; n<alloverwrites.length; n++) {
2456: formname.elements[alloverwrites[n]].value = "";
2457: }
2458: return false;
2459: }
2460: }
2461: if (alldelconfirm.length > 0) {
2462: if (!confirm("$delfilewarn")) {
2463: for (var p=0; p<alldelconfirm.length; p++) {
2464: formname.elements[alldelconfirm[p]].checked = false;
2465: }
2466: return false;
2467: }
2468: }
2469: return true;
2470: }
2471:
2472: function getIndexByName(formname,item) {
2473: for (var i=0;i<formname.elements.length;i++) {
2474: if (formname.elements[i].name == item) {
2475: return i;
2476: }
2477: }
2478: return -1;
2479: }
2480:
2481: function overwritten_check(formname,path,multiresp,part,prefix) {
2482: var result = [];
2483: result['overwrite'] = [];
2484: result['delete'] = [];
2485: var elemnum = formname.elements.length;
2486: if (elemnum == 0) {
2487: return result;
2488: }
2489: var uploadstr;
2490: var deletestr;
2491: if ((prefix != undefined) && (prefix != '')) {
2492: var prepend = prefix+'_';
2493: uploadstr = new RegExp("^"+prepend+"HWFILE"+part+".+\$");
2494: deletestr = new RegExp("^"+prepend+"HWFILE"+part+".+_\\\\d+_delete\$");
2495: multiresp = check_for_multiples(prepend);
2496: path = check_for_turninpath(prepend);
2497: } else {
2498: uploadstr = new RegExp("^HWFILE"+part+".+\$");
2499: deletestr = new RegExp("^HWFILE"+part+".+_\\\\d+_delete\$");
2500: }
2501: var alluploads = [];
2502: var allchecked = [];
2503: var allskipdel = [];
2504: var fnametrim = /[^\\/\\\\]+\$/;
2505: for (var i=0; i<formname.elements.length; i++) {
2506: var id = formname.elements[i].id;
2507: if (id != '') {
2508: if (uploadstr.test(id)) {
2509: if (formname.elements[i].type == 'file') {
2510: alluploads.push(id);
2511: } else {
2512: if (deletestr.test(id)) {
2513: if (formname.elements[i].type == 'checkbox') {
2514: if (formname.elements[i].checked) {
2515: allchecked.push(id);
2516: }
2517: }
2518: }
2519: }
2520: }
2521: }
2522: }
2523: for (var j=0; j<alluploads.length; j++) {
2524: var delstr = new RegExp("^"+alluploads[j]+"_\\\\d+_delete\$");
2525: var delboxes = [];
2526: for (var k=0; k<formname.elements.length; k++) {
2527: var id = formname.elements[k].id;
2528: if ((id != '') && (id != undefined)) {
2529: if (delstr.test(id)) {
2530: if (formname.elements[k].type == 'checkbox') {
2531: delboxes.push(id);
2532: }
2533: }
2534: }
2535: }
2536: if (delboxes.length > 0) {
2537: if ((formname.elements[alluploads[j]].value != undefined) &&
2538: (formname.elements[alluploads[j]].value != '')) {
2539: var filepath = formname.elements[alluploads[j]].value;
2540: var newfilename = fnametrim.exec(filepath);
2541: if (newfilename != null) {
2542: var filename = String(newfilename);
2543: var nospaces = filename.replace(/\\s+/g,'_');
2544: var nospecials = nospaces.replace(/[^\\/\\w\\.\\-]/g,'');
2545: var cleanfilename = nospecials.replace(/\\.(\\d+\\.)/g,"_\$1");
2546: if (cleanfilename != '') {
2547: var fullpath = path+"/"+cleanfilename;
2548: if (multiresp == 1) {
2549: var partid = String(alluploads[i]);
2550: var subdir = partid.replace(/^\\d*.?\\d*_?HWFILE/,'');
2551: if (subdir != "" && subdir != undefined) {
2552: fullpath = path+"/"+subdir+"/"+cleanfilename;
2553: }
2554: }
2555: for (var m=0; m<delboxes.length; m++) {
2556: if (fullpath == formname.elements[delboxes[m]].value) {
2557: if (formname.elements[delboxes[m]].checked) {
2558: allskipdel.push(delboxes[m]);
2559: } else {
2560: result['overwrite'].push(alluploads[j]);
2561: }
2562: break;
2563: }
2564: }
2565: }
2566: }
2567: }
2568: }
2569: }
2570: if (allchecked.length > 0) {
2571: if (allskipdel.length > 0) {
2572: for (var n=0; n<allchecked.length; n++) {
2573: if (allskipdel.indexOf(allchecked[n]) == -1) {
2574: result['delete'].push(allchecked[n]);
2575: }
2576: }
2577: } else {
2578: result['delete'].push.apply(result['delete'],allchecked);
2579: }
2580: }
2581: return result;
2582: }
2583:
2584: function check_for_multiples(prefix) {
2585: $multtext
2586: }
2587:
2588: function check_for_turninpath(prefix) {
2589: $turninpathtext
2590: }
2591:
2592: // ]]>
2593: </script>
2594:
2595: $arrayindexofjs
2596:
2597: ENDSCRIPT
2598: }
2599:
2600: ##############################################
2601: ##############################################
2602:
2603: # javascript_valid_email
2604: #
2605: # Generates javascript to validate an e-mail address.
2606: # Returns a javascript function which accetps a form field as argumnent, and
2607: # returns false if field.value does not satisfy two regular expression matches
2608: # for a valid e-mail address. Backwards compatible with old browsers without
2609: # support for javascript RegExp (just checks for @ in field.value in this case).
2610:
2611: sub javascript_valid_email {
2612: my $scripttag .= <<'END';
2613: function validmail(field) {
2614: var str = field.value;
2615: if (window.RegExp) {
2616: var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";
2617: var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$"; //"
2618: var reg1 = new RegExp(reg1str);
2619: var reg2 = new RegExp(reg2str);
2620: if (!reg1.test(str) && reg2.test(str)) {
2621: return true;
2622: }
2623: return false;
2624: }
2625: else
2626: {
2627: if(str.indexOf("@") >= 0) {
2628: return true;
2629: }
2630: return false;
2631: }
2632: }
2633: END
2634: return $scripttag;
2635: }
2636:
2637:
2638: # USAGE: htmltag(element, content, {attribute => value,...});
2639: #
2640: # EXAMPLES:
2641: # - htmltag('a', 'this is an anchor', {href => 'www.example.com',
2642: # title => 'this is a title'})
2643: #
2644: # - You might want to set up needed tags like:
2645: #
2646: # my $h3 = sub { return htmltag( "h3", @_ ) };
2647: #
2648: # ... and use them: $h3->("This is a headline")
2649: #
2650: # - To set up a couple of tags, see sub inittags
2651: #
2652: # NOTES:
2653: # - Empty elements, such as <br/> are correctly terminated,
2654: # i.e. htmltag('br') returns <br/>
2655: # - Empty attributes (title="") are filtered out.
2656: # - The function will not check for deprecated attributes.
2657: #
2658: # OUTPUT: content enclosed in xhtml conform tags
2659: sub htmltag{
2660: return
2661: qq|<$_[0]|
2662: . join( '', map { qq| $_="${$_[2]}{$_}"| if ${$_[2]}{$_} } keys %{ $_[2] } )
2663: . ($_[1] ? qq|>$_[1]</$_[0]>| : qq|/>|). "\n";
2664: };
2665:
2666:
2667: # USAGE: inittags(@tags);
2668: #
2669: # EXAMPLES:
2670: # - my ($h1, $h2, $h3) = inittags( qw( h1 h2 h3 ) )
2671: # $h1->("This is a headline") #Returns: <h1>This is a headline</h1>
2672: #
2673: # NOTES: See sub htmltag for further information.
2674: #
2675: # OUTPUT: List of subroutines.
2676: sub inittags {
2677: my @tags = @_;
2678: return map { my $tag = $_;
2679: sub { return htmltag( $tag, @_ ) }
2680: } @tags;
2681: }
2682:
2683:
2684: # USAGE: scripttag(scriptcode, [start|end|both]);
2685: #
2686: # EXAMPLES:
2687: # - scripttag("alert('Hello World!')", 'both')
2688: # returns:
2689: # <script type="text/javascript">
2690: # // BEGIN LON-CAPA Internal
2691: # alert(Hello World!')
2692: # // END LON-CAPA Internal
2693: # </script>
2694: #
2695: # NOTES:
2696: # - works currently only for javascripts
2697: #
2698: # OUTPUT:
2699: # Scriptcode properly enclosed in <script> and CDATA tags (and LC
2700: # Internal markers if 2nd argument is given)
2701: sub scripttag {
2702: my ( $content, $marker ) = @_;
2703: return unless defined $content;
2704:
2705: my $begin = "\n// BEGIN LON-CAPA Internal\n";
2706: my $end = "\n// END LON-CAPA Internal\n";
2707:
2708: if ($marker) {
2709: $content = $begin . $content if $marker eq 'start' or $marker eq 'both';
2710: $content .= $end if $marker eq 'end' or $marker eq 'both';
2711: }
2712:
2713: $content = "\n// <![CDATA[\n$content\n// ]]>\n";
2714:
2715: return htmltag('script', $content, {type => 'text/javascript'});
2716: };
2717:
2718:
2719: =item list_from_array( \@array, { listattr =>{}, itemattr =>{} } )
2720:
2721: Constructs a XHTML list from \@array.
2722:
2723: input:
2724:
2725: =over
2726:
2727: =item \@array
2728:
2729: A reference to the array containing text that will be wrapped in <li></li> tags.
2730:
2731: =item { listattr => {}, itemattr =>{} }
2732:
2733: Attributes for <ul> and <li> passed in as hash references.
2734: See htmltag() for more details.
2735:
2736: =back
2737:
2738: returns: XHTML list as String.
2739:
2740: =cut
2741:
2742: # \@items, {listattr => { class => 'abc', id => 'xyx' }, itemattr => {class => 'abc', id => 'xyx'}}
2743: sub list_from_array {
2744: my ($items, $args) = @_;
2745: return unless (ref($items) eq 'ARRAY');
2746: return unless scalar @$items;
2747: my ($ul, $li) = inittags( qw(ul li) );
2748: my $listitems = join '', map { $li->($_, $args->{itemattr}) } @$items;
2749: return $ul->( $listitems, $args->{listattr} );
2750: }
2751:
2752:
2753: ##############################################
2754: ##############################################
2755:
2756: # generate_menu
2757: #
2758: # Generates html markup for a menu.
2759: #
2760: # Inputs:
2761: # An array of following structure:
2762: # ({ categorytitle => 'Categorytitle',
2763: # items => [
2764: # {
2765: # linktext => 'Text to be displayed',
2766: # url => 'URL the link is pointing to, i.e. /adm/site?action=dosomething',
2767: # permission => 'Contains permissions as returned from lonnet::allowed(),
2768: # must evaluate to true in order to activate the link',
2769: # icon => 'icon filename',
2770: # alttext => 'alt text for the icon',
2771: # help => 'Name of the corresponding helpfile',
2772: # linktitle => 'Description of the link (used for title tag)'
2773: # },
2774: # ...
2775: # ]
2776: # },
2777: # ...
2778: # )
2779: #
2780: # Outputs: A scalar containing the html markup for the menu.
2781:
2782: sub generate_menu {
2783: my @menu = @_;
2784: # subs for specific html elements
2785: my ($h3, $div, $ul, $li, $a, $img) = inittags( qw(h3 div ul li a img) );
2786:
2787: my @categories; # each element represents the entire markup for a category
2788:
2789: foreach my $category (@menu) {
2790: my @links; # contains the links for the current $category
2791: foreach my $link (@{$$category{items}}) {
2792: next unless $$link{permission};
2793:
2794: # create the markup for the current $link and push it into @links.
2795: # each entry consists of an image and a text optionally followed
2796: # by a help link.
2797: my $src;
2798: if ($$link{icon} ne '') {
2799: $src = '/res/adm/pages/'.$$link{icon};
2800: }
2801: push(@links,$li->(
2802: $a->(
2803: $img->("", {
2804: class => "LC_noBorder LC_middle",
2805: src => $src,
2806: alt => mt(defined($$link{alttext}) ?
2807: $$link{alttext} : $$link{linktext})
2808: }), {
2809: href => $$link{url},
2810: title => mt($$link{linktitle})
2811: }).
2812: $a->(mt($$link{linktext}), {
2813: href => $$link{url},
2814: title => mt($$link{linktitle}),
2815: class => "LC_menubuttons_link"
2816: }).
2817: (defined($$link{help}) ?
2818: Apache::loncommon::help_open_topic($$link{help}) : ''),
2819: {class => "LC_menubuttons_inline_text"}));
2820: }
2821:
2822: # wrap categorytitle in <h3>, concatenate with
2823: # joined and in <ul> tags wrapped @links
2824: # and wrap everything in an enclosing <div> and push it into
2825: # @categories
2826: # such that each element looks like:
2827: # <div><h3>title</h3><ul><li>...</li>...</ul></div>
2828: # the category won't be added if there aren't any links
2829: push(@categories,
2830: $div->($h3->(mt($$category{categorytitle}), {class=>"LC_hcell"}).
2831: $ul->(join('' ,@links), {class =>"LC_ListStyleNormal" }),
2832: {class=>"LC_Box LC_400Box"})) if scalar(@links);
2833: }
2834:
2835: # wrap the joined @categories in another <div> (column layout)
2836: return $div->(join('', @categories), {class => "LC_columnSection"});
2837: }
2838:
2839: ##############################################
2840: ##############################################
2841:
2842: =pod
2843:
2844: =item &start_funclist
2845:
2846: Start list of available functions
2847:
2848: Typically used to offer a simple list of available functions
2849: at top or bottom of page.
2850: All available functions/actions for the current page
2851: should be included in this list.
2852:
2853: If the optional headline text is not provided, a default text will be used.
2854:
2855:
2856: Related routines:
2857: =over 4
2858: add_item_funclist
2859: end_funclist
2860: =back
2861:
2862:
2863: Inputs: (optional) headline text
2864:
2865: Returns: HTML code with function list start
2866:
2867: =cut
2868:
2869: ##############################################
2870: ##############################################
2871:
2872: sub start_funclist {
2873: my($legendtext)=@_;
2874: $legendtext=&mt('Functions') if !$legendtext;
2875: return '<ul class="LC_funclist"><li style="font-weight:bold; margin-left:0.8em;">'.$legendtext.'</li>'."\n";
2876: }
2877:
2878:
2879: ##############################################
2880: ##############################################
2881:
2882: =pod
2883:
2884: =item &add_item_funclist
2885:
2886: Adds an item to the list of available functions
2887:
2888: Related routines:
2889: =over 4
2890: start_funclist
2891: end_funclist
2892: =back
2893:
2894: Inputs: content item with text and link to function
2895:
2896: Returns: HTML code with list item for funclist
2897:
2898: =cut
2899:
2900: ##############################################
2901: ##############################################
2902:
2903: sub add_item_funclist {
2904: my($content) = @_;
2905: return '<li>'.$content.'</li>'."\n";
2906: }
2907:
2908: =pod
2909:
2910: =item &end_funclist
2911:
2912: End list of available functions
2913:
2914: Related routines:
2915: =over 4
2916: start_funclist
2917: add_item_funclist
2918: =back
2919:
2920: Inputs: ./.
2921:
2922: Returns: HTML code with function list end
2923: =cut
2924:
2925: sub end_funclist {
2926: return "</ul>\n";
2927: }
2928:
2929: =pod
2930:
2931: =item funclist_from_array( \@array, {legend => 'text for legend'} )
2932:
2933: Constructs a XHTML list from \@array with the first item being visually
2934: highlighted and set to the value of legend or 'Functions' if legend is
2935: empty.
2936:
2937: =over
2938:
2939: =item \@array
2940:
2941: A reference to the array containing text that will be wrapped in <li></li> tags.
2942:
2943: =item { legend => 'text' }
2944:
2945: A string that's used as visually highlighted first item. 'Functions' is used if
2946: it's value evaluates to false.
2947:
2948: =back
2949:
2950: returns: XHTML list as string.
2951:
2952: =back
2953:
2954: =cut
2955:
2956: sub funclist_from_array {
2957: my ($items, $args) = @_;
2958: return unless(ref($items) eq 'ARRAY');
2959: $args->{legend} ||= mt('Functions');
2960: return list_from_array( [$args->{legend}, @$items],
2961: { listattr => {class => 'LC_funclist'} });
2962: }
2963:
2964: 1;
2965:
2966: __END__
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