1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.269 2010/03/15 05:37:47 raeburn 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 LONCAPA;
64:
65:
66: sub coursepreflink {
67: my ($text,$category)=@_;
68: if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
69: return '<a href="'.&HTML::Entities::encode("/adm/courseprefs?phase=display&actions=$category",'<>&"').'">'.$text.'</a>';
70: } else {
71: return '';
72: }
73: }
74:
75: sub raw_href_to_link {
76: my ($message)=@_;
77: $message=~s/(https?\:\/\/[^\s\'\"\<]+)([\s\<]|$)/<a href="$1"><tt>$1<\/tt><\/a>$2/gi;
78: return $message;
79: }
80:
81: ##############################################
82: ##############################################
83:
84: =item confirm_success
85:
86: Successful completion of an operation message
87:
88: =cut
89:
90: sub confirm_success {
91: my ($message,$failure)=@_;
92: if ($failure) {
93: return '<span class="LC_error" style="font-size: inherit;">'."\n"
94: .'<img src="/adm/lonIcons/navmap.wrong.gif" alt="'.&mt('Error').'" /> '."\n"
95: .$message."\n"
96: .'</span>'."\n";
97: } else {
98: return '<span class="LC_success">'."\n"
99: .'<img src="/adm/lonIcons/navmap.correct.gif" alt="'.&mt('OK').'" /> '."\n"
100: .$message."\n"
101: .'</span>'."\n";
102: }
103: }
104:
105: ##############################################
106: ##############################################
107:
108: =pod
109:
110: =item dragmath_button
111:
112: Creates a button that launches a dragmath popup-window, in which an
113: expression can be edited and pasted as LaTeX into a specified textarea.
114:
115: textarea - Name of the textarea to edit.
116: helpicon - If true, show a help icon to the right of the button.
117:
118: =cut
119:
120: sub dragmath_button {
121: my ($textarea,$helpicon) = @_;
122: my $help_text;
123: if ($helpicon) {
124: $help_text = &Apache::loncommon::help_open_topic('Authoring_Math_Editor');
125: }
126: my $buttontext=&mt('Edit Math');
127: return <<ENDDRAGMATH;
128: <input type="button" value="$buttontext" onclick="javascript:mathedit('$textarea',document)" />$help_text
129: ENDDRAGMATH
130: }
131:
132: ##############################################
133:
134: =pod
135:
136: =item dragmath_js
137:
138: Javascript used to open pop-up window containing dragmath applet which
139: can be used to paste LaTeX into a textarea.
140: =cut
141:
142: sub dragmath_js {
143: my ($popup) = @_;
144: return <<ENDDRAGMATHJS;
145: <script type="text/javascript">
146: // <![CDATA[
147: function mathedit(textarea, doc) {
148: targetEntry = textarea;
149: targetDoc = doc;
150: newwin = window.open("/adm/dragmath/applet/$popup.html","","width=565,height=500,resizable");
151: }
152: // ]]>
153: </script>
154:
155: ENDDRAGMATHJS
156: }
157:
158:
159: ##############################################
160: ##############################################
161:
162: =pod
163:
164: =item authorbombs
165:
166: =cut
167:
168: ##############################################
169: ##############################################
170:
171: sub authorbombs {
172: my $url=shift;
173: $url=&Apache::lonnet::declutter($url);
174: my ($udom,$uname)=($url=~m{^($LONCAPA::domain_re)/($LONCAPA::username_re)/});
175: my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom);
176: foreach my $bomb (keys(%bombs)) {
177: if ($bomb =~ /^$udom\/$uname\//) {
178: return '<a href="/adm/bombs/'.$url.
179: '"><img src="'.&Apache::loncommon::lonhttpdurl('/adm/lonMisc/bomb.gif').'" alt="'.&mt('Bomb').'" border="0" /></a>'.
180: &Apache::loncommon::help_open_topic('About_Bombs');
181: }
182: }
183: return '';
184: }
185:
186: ##############################################
187: ##############################################
188:
189: sub recent_filename {
190: my $area=shift;
191: return 'nohist_recent_'.&escape($area);
192: }
193:
194: sub store_recent {
195: my ($area,$name,$value,$freeze)=@_;
196: my $file=&recent_filename($area);
197: my %recent=&Apache::lonnet::dump($file);
198: if (scalar(keys(%recent))>20) {
199: # remove oldest value
200: my $oldest=time();
201: my $delkey='';
202: foreach my $item (keys(%recent)) {
203: my $thistime=(split(/\&/,$recent{$item}))[0];
204: if (($thistime ne "always_include") && ($thistime<$oldest)) {
205: $oldest=$thistime;
206: $delkey=$item;
207: }
208: }
209: &Apache::lonnet::del($file,[$delkey]);
210: }
211: # store new value
212: my $timestamp;
213: if ($freeze) {
214: $timestamp = "always_include";
215: } else {
216: $timestamp = time();
217: }
218: &Apache::lonnet::put($file,{ $name =>
219: $timestamp.'&'.&escape($value) });
220: }
221:
222: sub remove_recent {
223: my ($area,$names)=@_;
224: my $file=&recent_filename($area);
225: return &Apache::lonnet::del($file,$names);
226: }
227:
228: sub select_recent {
229: my ($area,$fieldname,$event)=@_;
230: my %recent=&Apache::lonnet::dump(&recent_filename($area));
231: my $return="\n<select name='$fieldname'".
232: ($event?" onchange='$event'":'').
233: ">\n<option value=''>--- ".&mt('Recent')." ---</option>";
234: foreach my $value (sort(keys(%recent))) {
235: unless ($value =~/^error\:/) {
236: my $escaped = &Apache::loncommon::escape_url($value);
237: &Apache::loncommon::inhibit_menu_check(\$escaped);
238: if ($area eq 'residx') {
239: next if ((!&Apache::lonnet::allowed('bre',$value)) && (!&Apache::lonnet::allowed('bro',$value)));
240: }
241: $return.="\n<option value='$escaped'>".
242: &unescape((split(/\&/,$recent{$value}))[1]).
243: '</option>';
244: }
245: }
246: $return.="\n</select>\n";
247: return $return;
248: }
249:
250: sub get_recent {
251: my ($area, $n) = @_;
252: my %recent=&Apache::lonnet::dump(&recent_filename($area));
253:
254: # Create hash with key as time and recent as value
255: # Begin filling return_hash with any 'always_include' option
256: my %time_hash = ();
257: my %return_hash = ();
258: foreach my $item (keys(%recent)) {
259: my ($thistime,$thisvalue)=(split(/\&/,$recent{$item}));
260: if ($thistime eq 'always_include') {
261: $return_hash{$item} = &unescape($thisvalue);
262: $n--;
263: } else {
264: $time_hash{$thistime} = $item;
265: }
266: }
267:
268: # Sort by decreasing time and return key value pairs
269: my $idx = 1;
270: foreach my $item (reverse(sort(keys(%time_hash)))) {
271: $return_hash{$time_hash{$item}} =
272: &unescape((split(/\&/,$recent{$time_hash{$item}}))[1]);
273: if ($n && ($idx++ >= $n)) {last;}
274: }
275:
276: return %return_hash;
277: }
278:
279: sub get_recent_frozen {
280: my ($area) = @_;
281: my %recent=&Apache::lonnet::dump(&recent_filename($area));
282:
283: # Create hash with all 'frozen' items
284: my %return_hash = ();
285: foreach my $item (keys(%recent)) {
286: my ($thistime,$thisvalue)=(split(/\&/,$recent{$item}));
287: if ($thistime eq 'always_include') {
288: $return_hash{$item} = &unescape($thisvalue);
289: }
290: }
291: return %return_hash;
292: }
293:
294:
295:
296: =pod
297:
298: =item textbox
299:
300: =cut
301:
302: ##############################################
303: ##############################################
304: sub textbox {
305: my ($name,$value,$size,$special) = @_;
306: $size = 40 if (! defined($size));
307: $value = &HTML::Entities::encode($value,'<>&"');
308: my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
309: 'value="'.$value.'" '.$special.' />';
310: return $Str;
311: }
312:
313: ##############################################
314: ##############################################
315:
316: =pod
317:
318: =item checkbox
319:
320: =cut
321:
322: ##############################################
323: ##############################################
324: sub checkbox {
325: my ($name,$checked,$value) = @_;
326: my $Str = '<input type="checkbox" name="'.$name.'" ';
327: if (defined($value)) {
328: $Str .= 'value="'.$value.'"';
329: }
330: if ($checked) {
331: $Str .= ' checked="checked"';
332: }
333: $Str .= ' />';
334: return $Str;
335: }
336:
337:
338: =pod
339:
340: =item radiobutton
341:
342: =cut
343:
344: ##############################################
345: ##############################################
346: sub radio {
347: my ($name,$checked,$value) = @_;
348: my $Str = '<input type="radio" name="'.$name.'" ';
349: if (defined($value)) {
350: $Str .= 'value="'.$value.'"';
351: }
352: if ($checked eq $value) {
353: $Str .= ' checked="checked"';
354: }
355: $Str .= ' />';
356: return $Str;
357: }
358:
359: ##############################################
360: ##############################################
361:
362: =pod
363:
364: =item &date_setter
365:
366: &date_setter returns html and javascript for a compact date-setting form.
367: To retrieve values from it, use &get_date_from_form().
368:
369: Inputs
370:
371: =over 4
372:
373: =item $dname
374:
375: The name to prepend to the form elements.
376: The form elements defined will be dname_year, dname_month, dname_day,
377: dname_hour, dname_min, and dname_sec.
378:
379: =item $currentvalue
380:
381: The current setting for this time parameter. A unix format time
382: (time in seconds since the beginning of Jan 1st, 1970, GMT.
383: An undefined value is taken to indicate the value is the current time
384: unless it is requested to leave it empty. See $includeempty.
385: Also, to be explicit, a value of 'now' also indicates the current time.
386:
387: =item $special
388:
389: Additional html/javascript to be associated with each element in
390: the date_setter. See lonparmset for example usage.
391:
392: =item $includeempty
393:
394: If it is set (true) and no date/time value is provided,
395: the date/time fields are left empty.
396:
397: =item $state
398:
399: Specifies the initial state of the form elements. Either 'disabled' or empty.
400: Defaults to empty, which indiciates the form elements are not disabled.
401:
402: =back
403:
404: Bugs
405:
406: The method used to restrict user input will fail in the year 2400.
407:
408: =cut
409:
410: ##############################################
411: ##############################################
412: sub date_setter {
413: my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
414: $no_hh_mm_ss,$defhour,$defmin,$defsec,$nolink) = @_;
415: my $now = time;
416:
417: my $tzname;
418: my ($sec,$min,$hour,$mday,$month,$year) = ('', '', undef,''.''.'');
419: #other potentially useful values: wkday,yrday,is_daylight_savings
420:
421: if (! defined($state) || $state ne 'disabled') {
422: $state = '';
423: }
424: if (! defined($no_hh_mm_ss)) {
425: $no_hh_mm_ss = 0;
426: }
427: if ($currentvalue eq 'now') {
428: $currentvalue = $now;
429: }
430:
431: # Default value: Set empty date field to current time
432: # unless empty inclusion is requested
433: if ((!$includeempty) && (!$currentvalue)) {
434: $currentvalue = $now;
435: }
436: # Do we have a date? Split it!
437: if ($currentvalue) {
438: ($tzname,$sec,$min,$hour,$mday,$month,$year) = &get_timedates($currentvalue);
439:
440: #No values provided for hour, min, sec? Use default 0
441: if (($defhour) || ($defmin) || ($defsec)) {
442: $sec = ($defsec ? $defsec : 0);
443: $min = ($defmin ? $defmin : 0);
444: $hour = ($defhour ? $defhour : 0);
445: }
446: }
447: my $result = "\n<!-- $dname date setting form -->\n";
448: $result .= <<ENDJS;
449: <script type="text/javascript">
450: // <![CDATA[
451: function $dname\_checkday() {
452: var day = document.$formname.$dname\_day.value;
453: var month = document.$formname.$dname\_month.value;
454: var year = document.$formname.$dname\_year.value;
455: var valid = true;
456: if (day < 1) {
457: document.$formname.$dname\_day.value = 1;
458: }
459: if (day > 31) {
460: document.$formname.$dname\_day.value = 31;
461: }
462: if ((month == 1) || (month == 3) || (month == 5) ||
463: (month == 7) || (month == 8) || (month == 10) ||
464: (month == 12)) {
465: if (day > 31) {
466: document.$formname.$dname\_day.value = 31;
467: day = 31;
468: }
469: } else if (month == 2 ) {
470: if ((year % 4 == 0) && (year % 100 != 0)) {
471: if (day > 29) {
472: document.$formname.$dname\_day.value = 29;
473: }
474: } else if (day > 29) {
475: document.$formname.$dname\_day.value = 28;
476: }
477: } else if (day > 30) {
478: document.$formname.$dname\_day.value = 30;
479: }
480: }
481:
482: function $dname\_disable() {
483: document.$formname.$dname\_month.disabled=true;
484: document.$formname.$dname\_day.disabled=true;
485: document.$formname.$dname\_year.disabled=true;
486: document.$formname.$dname\_hour.disabled=true;
487: document.$formname.$dname\_minute.disabled=true;
488: document.$formname.$dname\_second.disabled=true;
489: }
490:
491: function $dname\_enable() {
492: document.$formname.$dname\_month.disabled=false;
493: document.$formname.$dname\_day.disabled=false;
494: document.$formname.$dname\_year.disabled=false;
495: document.$formname.$dname\_hour.disabled=false;
496: document.$formname.$dname\_minute.disabled=false;
497: document.$formname.$dname\_second.disabled=false;
498: }
499:
500: function $dname\_opencalendar() {
501: if (! document.$formname.$dname\_month.disabled) {
502: var calwin=window.open(
503: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
504: document.$formname.$dname\_month.value+"&year="+
505: document.$formname.$dname\_year.value,
506: "LONCAPAcal",
507: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
508: }
509:
510: }
511: // ]]>
512: </script>
513: ENDJS
514: $result .= ' <span class="LC_nobreak">';
515: my $monthselector = qq{<select name="$dname\_month" $special $state onchange="javascript:$dname\_checkday()" >};
516: # Month
517: my @Months = qw/January February March April May June
518: July August September October November December/;
519: # Pad @Months with a bogus value to make indexing easier
520: unshift(@Months,'If you can read this an error occurred');
521: if ($includeempty) { $monthselector.="<option value=''></option>"; }
522: for(my $m = 1;$m <=$#Months;$m++) {
523: $monthselector .= qq{ <option value="$m"};
524: $monthselector .= ' selected="selected"' if ($m-1 eq $month);
525: $monthselector .= '> '.&mt($Months[$m]).' </option>'."\n";
526: }
527: $monthselector.= ' </select>';
528: # Day
529: my $dayselector = qq{<input type="text" name="$dname\_day" $state value="$mday" size="3" $special onchange="javascript:$dname\_checkday()" />};
530: # Year
531: my $yearselector = qq{<input type="text" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
532: #
533: my $hourselector = qq{<select name="$dname\_hour" $special $state >};
534: if ($includeempty) {
535: $hourselector.=qq{<option value=''></option>};
536: }
537: for (my $h = 0;$h<24;$h++) {
538: $hourselector .= qq{<option value="$h"};
539: $hourselector .= ' selected="selected"' if (defined($hour) && $hour == $h);
540: $hourselector .= ">";
541: my $timest='';
542: if ($h == 0) {
543: $timest .= "12 am";
544: } elsif($h == 12) {
545: $timest .= "12 noon";
546: } elsif($h < 12) {
547: $timest .= "$h am";
548: } else {
549: $timest .= $h-12 ." pm";
550: }
551: $timest=&mt($timest);
552: $hourselector .= $timest." </option>\n";
553: }
554: $hourselector .= " </select>\n";
555: my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
556: my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
557: my $cal_link;
558: if (!$nolink) {
559: $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
560: }
561: #
562: my $tzone = ' '.$tzname.' ';
563: if ($no_hh_mm_ss) {
564: $result .= &mt('[_1] [_2] [_3] ',
565: $monthselector,$dayselector,$yearselector).
566: $tzone;
567: if (!$nolink) {
568: $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
569: }
570: } else {
571: $result .= &mt('[_1] [_2] [_3] [_4] [_5]m [_6]s ',
572: $monthselector,$dayselector,$yearselector,
573: $hourselector,$minuteselector,$secondselector).
574: $tzone;
575: if (!$nolink) {
576: $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
577: }
578: }
579: $result .= "</span>\n<!-- end $dname date setting form -->\n";
580: return $result;
581: }
582:
583: sub get_timedates {
584: my ($epoch) = @_;
585: my $dt = DateTime->from_epoch(epoch => $epoch)
586: ->set_time_zone(&Apache::lonlocal::gettimezone());
587: my $tzname = $dt->time_zone_short_name();
588: my $sec = $dt->second;
589: my $min = $dt->minute;
590: my $hour = $dt->hour;
591: my $mday = $dt->day;
592: my $month = $dt->month;
593: if ($month) {
594: $month --;
595: }
596: my $year = $dt->year;
597: return ($tzname,$sec,$min,$hour,$mday,$month,$year);
598: }
599:
600: sub build_url {
601: my ($base, $fields)=@_;
602: my $url;
603: $url = $base.'?';
604: foreach my $key (keys(%$fields)) {
605: $url.=&escape($key).'='.&escape($$fields{$key}).'&';
606: }
607: $url =~ s/&$//;
608: return $url;
609: }
610:
611:
612: ##############################################
613: ##############################################
614:
615: =pod
616:
617: =item &get_date_from_form
618:
619: get_date_from_form retrieves the date specified in an &date_setter form.
620:
621: Inputs:
622:
623: =over 4
624:
625: =item $dname
626:
627: The name passed to &date_setter, which prefixes the form elements.
628:
629: =item $defaulttime
630:
631: The unix time to use as the default in case of poor inputs.
632:
633: =back
634:
635: Returns: Unix time represented in the form.
636:
637: =cut
638:
639: ##############################################
640: ##############################################
641: sub get_date_from_form {
642: my ($dname) = @_;
643: my ($sec,$min,$hour,$day,$month,$year);
644: #
645: if (defined($env{'form.'.$dname.'_second'})) {
646: my $tmpsec = $env{'form.'.$dname.'_second'};
647: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
648: $sec = $tmpsec;
649: }
650: if (!defined($tmpsec) || $tmpsec eq '') { $sec = 0; }
651: } else {
652: $sec = 0;
653: }
654: if (defined($env{'form.'.$dname.'_minute'})) {
655: my $tmpmin = $env{'form.'.$dname.'_minute'};
656: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
657: $min = $tmpmin;
658: }
659: if (!defined($tmpmin) || $tmpmin eq '') { $min = 0; }
660: } else {
661: $min = 0;
662: }
663: if (defined($env{'form.'.$dname.'_hour'})) {
664: my $tmphour = $env{'form.'.$dname.'_hour'};
665: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
666: $hour = $tmphour;
667: }
668: } else {
669: $hour = 0;
670: }
671: if (defined($env{'form.'.$dname.'_day'})) {
672: my $tmpday = $env{'form.'.$dname.'_day'};
673: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
674: $day = $tmpday;
675: }
676: }
677: if (defined($env{'form.'.$dname.'_month'})) {
678: my $tmpmonth = $env{'form.'.$dname.'_month'};
679: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
680: $month = $tmpmonth;
681: }
682: }
683: if (defined($env{'form.'.$dname.'_year'})) {
684: my $tmpyear = $env{'form.'.$dname.'_year'};
685: if (($tmpyear =~ /^\d+$/) && ($tmpyear >= 1970)) {
686: $year = $tmpyear;
687: }
688: }
689: if (($year<1970) || ($year>2037)) { return undef; }
690: if (defined($sec) && defined($min) && defined($hour) &&
691: defined($day) && defined($month) && defined($year)) {
692: my $timezone = &Apache::lonlocal::gettimezone();
693: my $dt = DateTime->new( year => $year,
694: month => $month,
695: day => $day,
696: hour => $hour,
697: minute => $min,
698: second => $sec,
699: time_zone => $timezone,
700: );
701: my $epoch_time = $dt->epoch;
702: if ($epoch_time ne '') {
703: return $epoch_time;
704: } else {
705: return undef;
706: }
707: } else {
708: return undef;
709: }
710: }
711:
712: ##############################################
713: ##############################################
714:
715: =pod
716:
717: =item &pjump_javascript_definition()
718:
719: Returns javascript defining the 'pjump' function, which opens up a
720: parameter setting wizard.
721:
722: =cut
723:
724: ##############################################
725: ##############################################
726: sub pjump_javascript_definition {
727: my $Str = <<END;
728: function pjump(type,dis,value,marker,ret,call,hour,min,sec) {
729: parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
730: +"&value="+escape(value)+"&marker="+escape(marker)
731: +"&return="+escape(ret)
732: +"&call="+escape(call)+"&name="+escape(dis)
733: +"&defhour="+escape(hour)+"&defmin="+escape(min)
734: +"&defsec="+escape(sec),"LONCAPAparms",
735: "height=350,width=350,scrollbars=no,menubar=no");
736: }
737: END
738: return $Str;
739: }
740:
741: ##############################################
742: ##############################################
743:
744: =pod
745:
746: =item &javascript_nothing()
747:
748: Return an appropriate null for the users browser. This is used
749: as the first arguement for window.open calls when you want a blank
750: window that you can then write to.
751:
752: =cut
753:
754: ##############################################
755: ##############################################
756: sub javascript_nothing {
757: # mozilla and other browsers work with "''", but IE on mac does not.
758: my $nothing = "''";
759: my $user_browser;
760: my $user_os;
761: $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
762: $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
763: if (! defined($user_browser) || ! defined($user_os)) {
764: (undef,$user_browser,undef,undef,undef,$user_os) =
765: &Apache::loncommon::decode_user_agent();
766: }
767: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
768: $nothing = "'javascript:void(0);'";
769: }
770: return $nothing;
771: }
772:
773: ##############################################
774: ##############################################
775: sub javascript_docopen {
776: my ($mimetype) = @_;
777: $mimetype ||= 'text/html';
778: # safari does not understand document.open() and loads "text/html"
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 'safari' && $user_os =~ 'mac') {
789: $nothing = "document.clear()";
790: } else {
791: $nothing = "document.open('$mimetype','replace')";
792: }
793: return $nothing;
794: }
795:
796:
797: ##############################################
798: ##############################################
799:
800: =pod
801:
802: =item &StatusOptions()
803:
804: Returns html for a selection box which allows the user to choose the
805: enrollment status of students. The selection box name is 'Status'.
806:
807: Inputs:
808:
809: $status: the currently selected status. If undefined the value of
810: $env{'form.Status'} is taken. If that is undefined, a value of 'Active'
811: is used.
812:
813: $formname: The name of the form. If defined the onchange attribute of
814: the selection box is set to document.$formname.submit().
815:
816: $size: the size (number of lines) of the selection box.
817:
818: $onchange: javascript to use when the value is changed. Enclosed in
819: double quotes, ""s, not single quotes.
820:
821: Returns: a perl string as described.
822:
823: =cut
824:
825: ##############################################
826: ##############################################
827: sub StatusOptions {
828: my ($status, $formName,$size,$onchange,$mult)=@_;
829: $size = 1 if (!defined($size));
830: if (! defined($status)) {
831: $status = 'Active';
832: $status = $env{'form.Status'} if (exists($env{'form.Status'}));
833: }
834:
835: my $Str = '';
836: $Str .= '<select name="Status"';
837: if (defined($mult)){
838: $Str .= ' multiple="multiple" ';
839: }
840: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
841: $Str .= ' onchange="document.'.$formName.'.submit()"';
842: }
843: if (defined($onchange)) {
844: $Str .= ' onchange="'.$onchange.'"';
845: }
846: $Str .= ' size="'.$size.'" ';
847: $Str .= '>'."\n";
848: foreach my $type (['Active', &mt('Currently Has Access')],
849: ['Future', &mt('Will Have Future Access')],
850: ['Expired', &mt('Previously Had Access')],
851: ['Any', &mt('Any Access Status')]) {
852: my ($name,$label) = @$type;
853: $Str .= '<option value="'.$name.'" ';
854: if ($status eq $name) {
855: $Str .= 'selected="selected" ';
856: }
857: $Str .= '>'.$label.'</option>'."\n";
858: }
859:
860: $Str .= '</select>'."\n";
861: }
862:
863: ########################################################
864: ########################################################
865:
866: =pod
867:
868: =item Progess Window Handling Routines
869:
870: These routines handle the creation, update, increment, and closure of
871: progress windows. The progress window reports to the user the number
872: of items completed and an estimate of the time required to complete the rest.
873:
874: =over 4
875:
876:
877: =item &Create_PrgWin
878:
879: Writes javascript to the client to open a progress window and returns a
880: data structure used for bookkeeping.
881:
882: Inputs
883:
884: =over 4
885:
886: =item $r Apache request
887:
888: =item $title The title of the progress window
889:
890: =item $heading A description (usually 1 line) of the process being initiated.
891:
892: =item $number_to_do The total number of items being processed.
893:
894: =item $type Either 'popup' or 'inline' (popup is assumed if nothing is
895: specified)
896:
897: =item $width Specify the width in charaters of the input field.
898:
899: =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
900:
901: =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
902:
903: =back
904:
905: Returns a hash containing the progress state data structure.
906:
907:
908: =item &Update_PrgWin
909:
910: Updates the text in the progress indicator. Does not increment the count.
911: See &Increment_PrgWin.
912:
913: Inputs:
914:
915: =over 4
916:
917: =item $r Apache request
918:
919: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
920:
921: =item $displaystring The string to write to the status indicator
922:
923: =back
924:
925: Returns: none
926:
927:
928: =item Increment_PrgWin
929:
930: Increment the count of items completed for the progress window by 1.
931:
932: Inputs:
933:
934: =over 4
935:
936: =item $r Apache request
937:
938: =item $prog_state Pointer to the data structure returned by Create_PrgWin
939:
940: =item $extraInfo A description of the items being iterated over. Typically
941: 'student'.
942:
943: =back
944:
945: Returns: none
946:
947:
948: =item Close_PrgWin
949:
950: Closes the progress window.
951:
952: Inputs:
953:
954: =over 4
955:
956: =item $r Apache request
957:
958: =item $prog_state Pointer to the data structure returned by Create_PrgWin
959:
960: =back
961:
962: Returns: none
963:
964: =back
965:
966: =cut
967:
968: ########################################################
969: ########################################################
970:
971: my $uniq=0;
972: sub get_uniq_name {
973: $uniq++;
974: return 'uniquename'.$uniq;
975: }
976:
977: # Create progress
978: sub Create_PrgWin {
979: my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
980: $inputname)=@_;
981: if (!defined($type)) { $type='popup'; }
982: if (!defined($width)) { $width=55; }
983: my %prog_state;
984: $prog_state{'type'}=$type;
985: if ($type eq 'popup') {
986: $prog_state{'window'}='popwin';
987: my $start_page =
988: &Apache::loncommon::start_page($title,undef,
989: {'only_body' => 1,
990: 'bgcolor' => '#88DDFF',
991: 'js_ready' => 1});
992: my $end_page = &Apache::loncommon::end_page({'js_ready' => 1});
993:
994: #the whole function called through timeout is due to issues
995: #in mozilla Read BUG #2665 if you want to know the whole story
996: &r_print($r,&Apache::lonhtmlcommon::scripttag(
997: "var popwin;
998: function openpopwin () {
999: popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
1000: "popwin.document.writeln(\'".$start_page.
1001: "<h4>".&mt("$heading")."<\/h4>".
1002: "<form action=\"\" name=\"popremain\" method=\"post\">".
1003: '<input type="text" size="'.$width.'" name="remaining" value="'.
1004: &mt('Starting').'" /><\\/form>'.$end_page.
1005: "\');".
1006: "popwin.document.close();}".
1007: "\nwindow.setTimeout(openpopwin,0)"
1008: ));
1009: $prog_state{'formname'}='popremain';
1010: $prog_state{'inputname'}="remaining";
1011: } elsif ($type eq 'inline') {
1012: $prog_state{'window'}='window';
1013: if (!$formname) {
1014: $prog_state{'formname'}=&get_uniq_name();
1015: &r_print($r,'<form action="" name="'.$prog_state{'formname'}.'">');
1016: } else {
1017: $prog_state{'formname'}=$formname;
1018: }
1019: if (!$inputname) {
1020: $prog_state{'inputname'}=&get_uniq_name();
1021: &r_print($r,&mt("$heading [_1]",' <input type="text" name="'.$prog_state{'inputname'}.'" size="'.$width.'" />'));
1022: } else {
1023: $prog_state{'inputname'}=$inputname;
1024:
1025: }
1026: if (!$formname) { &r_print($r,'</form>'); }
1027: &Update_PrgWin($r,\%prog_state,&mt('Starting'));
1028: }
1029:
1030: $prog_state{'done'}=0;
1031: $prog_state{'firststart'}=&Time::HiRes::time();
1032: $prog_state{'laststart'}=&Time::HiRes::time();
1033: $prog_state{'max'}=$number_to_do;
1034:
1035: return %prog_state;
1036: }
1037:
1038: # update progress
1039: sub Update_PrgWin {
1040: my ($r,$prog_state,$displayString)=@_;
1041: &r_print($r,&Apache::lonhtmlcommon::scripttag(
1042: $$prog_state{'window'}.'.document.'.
1043: $$prog_state{'formname'}.'.'.
1044: $$prog_state{'inputname'}.'.value="'.
1045: $displayString.'";'
1046: ));
1047: $$prog_state{'laststart'}=&Time::HiRes::time();
1048: }
1049:
1050: # increment progress state
1051: sub Increment_PrgWin {
1052: my ($r,$prog_state,$extraInfo)=@_;
1053: $$prog_state{'done'}++;
1054: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
1055: $$prog_state{'done'} *
1056: ($$prog_state{'max'}-$$prog_state{'done'});
1057: $time_est = int($time_est);
1058: #
1059: my $min = int($time_est/60);
1060: my $sec = $time_est % 60;
1061: #
1062: my $str;
1063: if ($min == 0 && $sec > 1) {
1064: $str = '[_1] seconds';
1065: } elsif ($min == 1 && $sec > 1) {
1066: $str = '1 minute [_2] seconds';
1067: } elsif ($min == 1 && $sec < 2) {
1068: $str = '1 minute';
1069: } elsif ($min < 10 && $sec > 1) {
1070: $str = '[_1] minutes, [_2] seconds';
1071: } elsif ($min >= 10 || $sec < 2) {
1072: $str = '[_1] minutes';
1073: }
1074: $time_est = &mt($str,$min,$sec);
1075: #
1076: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
1077: if ($lasttime > 9) {
1078: $lasttime = int($lasttime);
1079: } elsif ($lasttime < 0.01) {
1080: $lasttime = 0;
1081: } else {
1082: $lasttime = sprintf("%3.2f",$lasttime);
1083: }
1084: if ($lasttime == 1) {
1085: $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
1086: } else {
1087: $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
1088: }
1089: #
1090: my $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
1091: my $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
1092: if (! defined($user_browser) || ! defined($user_os)) {
1093: (undef,$user_browser,undef,undef,undef,$user_os) =
1094: &Apache::loncommon::decode_user_agent();
1095: }
1096: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
1097: $lasttime = '';
1098: }
1099: &r_print($r,&Apache::lonhtmlcommon::scripttag(
1100: $$prog_state{'window'}.'.document.'.
1101: $$prog_state{'formname'}.'.'.
1102: $$prog_state{'inputname'}.'.value="'.
1103: $$prog_state{'done'}.'/'.$$prog_state{'max'}.
1104: ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'
1105: ));
1106: $$prog_state{'laststart'}=&Time::HiRes::time();
1107: }
1108:
1109: # close Progress Line
1110: sub Close_PrgWin {
1111: my ($r,$prog_state)=@_;
1112: if ($$prog_state{'type'} eq 'popup') {
1113: &r_print($r,&Apache::lonhtmlcommon::scripttag(
1114: 'popwin.close()'
1115: ));
1116: } elsif ($$prog_state{'type'} eq 'inline') {
1117: &Update_PrgWin($r,$prog_state,&mt('Done'));
1118: }
1119: undef(%$prog_state);
1120: }
1121:
1122: sub r_print {
1123: my ($r,$to_print)=@_;
1124: if ($r) {
1125: $r->print($to_print);
1126: $r->rflush();
1127: } else {
1128: print($to_print);
1129: }
1130: }
1131:
1132: # ------------------------------------------------------- Puts directory header
1133:
1134: sub crumbs {
1135: my ($uri,$target,$prefix,$form,$skiplast)=@_;
1136: if ($target) {
1137: $target = ' target="'.
1138: &Apache::loncommon::escape_single($target).'"';
1139: }
1140: my $output='<span class="LC_filename">';
1141: $output.=$prefix.'/';
1142: if (($env{'user.adv'}) || ($env{'user.author'})) {
1143: my $path=$prefix.'/';
1144: foreach my $dir (split('/',$uri)) {
1145: if (! $dir) { next; }
1146: $path .= $dir;
1147: if ($path eq $uri) {
1148: if ($skiplast) {
1149: $output.=$dir;
1150: last;
1151: }
1152: } else {
1153: $path.='/';
1154: }
1155: my $href_path = &HTML::Entities::encode($path,'<>&"');
1156: &Apache::loncommon::inhibit_menu_check(\$href_path);
1157: if ($form) {
1158: my $href = 'javascript:'.$form.".action='".$href_path."';".$form.'.submit();';
1159: $output.=qq{<a href="$href"$target>$dir</a>/};
1160: } else {
1161: $output.=qq{<a href="$href_path"$target>$dir</a>/};
1162: }
1163: }
1164: } else {
1165: foreach my $dir (split('/',$uri)) {
1166: if (! $dir) { next; }
1167: $output.=$dir.'/';
1168: }
1169: }
1170: if ($uri !~ m|/$|) { $output=~s|/$||; }
1171: $output.='</span>';
1172:
1173: return $output;
1174: }
1175:
1176: # --------------------- A function that generates a window for the spellchecker
1177:
1178: sub spellheader {
1179: my $start_page=
1180: &Apache::loncommon::start_page('Speller Suggestions',undef,
1181: {'only_body' => 1,
1182: 'js_ready' => 1,
1183: 'bgcolor' => '#DDDDDD',
1184: 'add_entries' => {
1185: 'onload' =>
1186: 'document.forms.spellcheckform.submit()',
1187: }
1188: });
1189: my $end_page=
1190: &Apache::loncommon::end_page({'js_ready' => 1});
1191:
1192: my $nothing=&javascript_nothing();
1193: return (<<ENDCHECK);
1194: <script type="text/javascript">
1195: // <![CDATA[
1196: //<!-- BEGIN LON-CAPA Internal
1197: var checkwin;
1198:
1199: function spellcheckerwindow(string) {
1200: var esc_string = string.replace(/\"/g,'"');
1201: checkwin=window.open($nothing,'spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
1202: checkwin.document.writeln('$start_page<form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="'+esc_string+'" /><\\/form>$end_page');
1203: checkwin.document.close();
1204: }
1205: // END LON-CAPA Internal -->
1206: // ]]>
1207: </script>
1208: ENDCHECK
1209: }
1210:
1211: # ---------------------------------- Generate link to spell checker for a field
1212:
1213: sub spelllink {
1214: my ($form,$field)=@_;
1215: my $linktext=&mt('Check Spelling');
1216: return (<<ENDLINK);
1217: <a href="javascript:if (typeof(document.$form.onsubmit)!='undefined') { if (document.$form.onsubmit!=null) { document.$form.onsubmit();}};spellcheckerwindow(this.document.forms.$form.$field.value);">$linktext</a>
1218: ENDLINK
1219: }
1220:
1221: # ------------------------------------------------- Output headers for HTMLArea
1222:
1223: {
1224: my @htmlareafields;
1225: sub init_htmlareafields {
1226: undef(@htmlareafields);
1227: }
1228:
1229: sub add_htmlareafields {
1230: my (@newfields) = @_;
1231: push(@htmlareafields,@newfields);
1232: }
1233:
1234: sub get_htmlareafields {
1235: return @htmlareafields;
1236: }
1237: }
1238:
1239: sub htmlareaheaders {
1240: my $s="";
1241: if (&htmlareabrowser()) {
1242: $s.=(<<ENDEDITOR);
1243: <script type="text/javascript" src="/ckeditor/ckeditor.js"></script>
1244: ENDEDITOR
1245: }
1246: $s.=(<<ENDJQUERY);
1247: <script type="text/javascript" src="/adm/jQuery/js/jquery-1.3.2.min.js"></script>
1248: <script type="text/javascript" src="/adm/jQuery/js/jquery-ui-1.7.2.custom.min.js"></script>
1249: <link rel="stylesheet" type="text/css" href="/adm/jQuery/css/smoothness/jquery-ui-1.7.2.custom.css" />
1250: ENDJQUERY
1251: return $s;
1252: }
1253:
1254: # ----------------------------------------------------------------- Preferences
1255:
1256: sub disablelink {
1257: my @fields=@_;
1258: if (defined($#fields)) {
1259: unless ($#fields>=0) { return ''; }
1260: }
1261: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=off&returnurl=','<>&"').&escape($ENV{'REQUEST_URI'}).'">'.&mt('Disable WYSIWYG Editor').'</a>';
1262: }
1263:
1264: sub enablelink {
1265: my @fields=@_;
1266: if (defined($#fields)) {
1267: unless ($#fields>=0) { return ''; }
1268: }
1269: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=on&returnurl=','<>&"').&escape($ENV{'REQUEST_URI'}).'">'.&mt('Enable WYSIWYG Editor').'</a>';
1270: }
1271:
1272: # ------------------------------------------------- lang to use in html editor
1273: sub htmlarea_lang {
1274: my $lang='en';
1275: if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
1276: $lang=&mt('htmlarea_lang');
1277: }
1278: return $lang;
1279: }
1280:
1281: # ----------------------------------------- Script to activate only some fields
1282:
1283: sub htmlareaselectactive {
1284: my @fields=@_;
1285: unless (&htmlareabrowser()) { return ''; }
1286: my $output='<script type="text/javascript" defer="defer">'."\n"
1287: .'// <![CDATA['."\n";
1288: my $lang = &htmlarea_lang();
1289: $output.='
1290:
1291: function containsBlockHtml(id) {
1292: 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);
1293: return (re >= 0);
1294: }
1295:
1296: function startRichEditor(id) {
1297: CKEDITOR.replace(id,
1298: {
1299: customConfig: "/ckeditor/loncapaconfig.js"
1300: }
1301: );
1302: }
1303:
1304: function destroyRichEditor(id) {
1305: CKEDITOR.instances[id].destroy();
1306: }
1307:
1308: function editorHandler(event) {
1309: var rawid = $(this).attr("id");
1310: var id = new RegExp("LC_rt_(.*)").exec(rawid)[1]
1311: event.preventDefault();
1312: if ($(this).hasClass("LC_enable_rt")) {
1313: startRichEditor(id);
1314: $("#LC_rt_"+id).html("<b>« Plain text</b>");
1315: $("#LC_rt_"+id).attr("title", "Disable rich text formatting and edit in plain text");
1316: $("#LC_rt_"+id).addClass("LC_disable_rt");
1317: $("#LC_rt_"+id).removeClass("LC_enable_rt");
1318: } else {
1319: destroyRichEditor(id);
1320: $("#LC_rt_"+id).html("<b>Rich formatting »</b>");
1321: $("#LC_rt_"+id).attr("title", "Enable rich text formatting (bold, italic, etc.)");
1322: $("#LC_rt_"+id).addClass("LC_enable_rt");
1323: $("#LC_rt_"+id).removeClass("LC_disable_rt");
1324: }
1325: }
1326:
1327: $(document).ready(function(){
1328: $(".LC_richAlwaysOn").each(function() {
1329: startRichEditor($(this).attr("id"));
1330: });
1331: $(".LC_richDetectHtml").each(function() {
1332: var id = $(this).attr("id");
1333: if(containsBlockHtml(id)) {
1334: $(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>");
1335: startRichEditor(id);
1336: $("#LC_rt_"+id).click(editorHandler);
1337: }
1338: else {
1339: $(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>");
1340: $("#LC_rt_"+id).click(editorHandler);
1341: }
1342: });
1343: $(".LC_richDefaultOn").each(function() {
1344: var id = $(this).attr("id");
1345: $(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>");
1346: startRichEditor(id);
1347: $("#LC_rt_"+id).click(editorHandler);
1348: });
1349: $(".LC_richDefaultOff").each(function() {
1350: var id = $(this).attr("id");
1351: $(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>");
1352: $("#LC_rt_"+id).click(editorHandler);
1353: });
1354:
1355: });
1356: ';
1357: $output.="\nwindow.status='Activated Editfields';\n"
1358: .'// ]]>'."\n"
1359: .'</script><br />';
1360: return $output;
1361: }
1362:
1363: # --------------------------------------------------------------------- Blocked
1364:
1365: sub htmlareablocked {
1366: unless ($env{'environment.wysiwygeditor'} eq 'on') { return 1; }
1367: return 0;
1368: }
1369:
1370: # ---------------------------------------- Browser capable of running HTMLArea?
1371:
1372: sub htmlareabrowser {
1373: return 1;
1374: }
1375:
1376: ############################################################
1377: ############################################################
1378:
1379: =pod
1380:
1381: =item breadcrumbs
1382:
1383: Compiles the previously registered breadcrumbs into an series of links.
1384: Additionally supports a 'component', which will be displayed on the
1385: right side of the breadcrumbs enclosing div (without a link).
1386: A link to help for the component will be included if one is specified.
1387:
1388: All inputs can be undef without problems.
1389:
1390: Inputs: $component (the text on the right side of the breadcrumbs trail),
1391: $component_help
1392: $menulink (boolean, controls whether to include a link to /adm/menu)
1393: $helplink (if 'nohelp' don't include the orange help link)
1394: $css_class (optional name for the class to apply to the table for CSS)
1395: $no_mt (optional flag, 1 if &mt() is _not_ to be applied to $component
1396: when including the text on the right.
1397: Returns a string containing breadcrumbs for the current page.
1398:
1399: =item clear_breadcrumbs
1400:
1401: Clears the previously stored breadcrumbs.
1402:
1403: =item add_breadcrumb
1404:
1405: Pushes a breadcrumb on the stack of crumbs.
1406:
1407: input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
1408: are required. If present the keys 'faq' and 'bug' will be used to provide
1409: links to the FAQ and bug sites. If the key 'no_mt' is present the 'title'
1410: and 'text' values won't be sent through &mt()
1411:
1412: returns: nothing
1413:
1414: =cut
1415:
1416: ############################################################
1417: ############################################################
1418: {
1419: my @Crumbs;
1420: my %tools = ();
1421:
1422: sub breadcrumbs {
1423: my ($component,$component_help,$menulink,$helplink,$css_class,$no_mt, $CourseBreadcrumbs) = @_;
1424: #
1425: $css_class ||= 'LC_breadcrumbs';
1426:
1427: # Make the faq and bug data cascade
1428: my $faq = '';
1429: my $bug = '';
1430: my $help = '';
1431: # Crumb Symbol
1432: my $crumbsymbol = '»';
1433: # The last breadcrumb does not have a link, so handle it separately.
1434: my $last = pop(@Crumbs);
1435: #
1436: # The first one should be the course or a menu link
1437: if (!defined($menulink)) { $menulink=1; }
1438: if ($menulink) {
1439: my $description = 'Menu';
1440: my $no_mt_descr = 0;
1441: if ((exists($env{'request.course.id'})) &&
1442: ($env{'request.course.id'} ne '') &&
1443: ($env{'course.'.$env{'request.course.id'}.'.description'} ne '')) {
1444: $description =
1445: $env{'course.'.$env{'request.course.id'}.'.description'};
1446: $no_mt_descr = 1;
1447: }
1448: $menulink = { href =>'/adm/menu',
1449: title =>'Go to main menu',
1450: target =>'_top',
1451: text =>$description,
1452: no_mt =>$no_mt_descr, };
1453: if($last) {
1454: #$last set, so we have some crumbs
1455: unshift(@Crumbs,$menulink);
1456: } else {
1457: #only menulink crumb present
1458: $last = $menulink;
1459: }
1460: }
1461: my $links = join "",
1462: map {
1463: $faq = $_->{'faq'} if (exists($_->{'faq'}));
1464: $bug = $_->{'bug'} if (exists($_->{'bug'}));
1465: $help = $_->{'help'} if (exists($_->{'help'}));
1466:
1467: my $result = $_->{no_mt} ? $_->{text} : mt($_->{text});
1468:
1469: if ($_->{href}){
1470: $result = htmltag( 'a', $result,
1471: { href => $_->{href},
1472: title => $_->{no_mt} ? $_->{title} : mt($_->{title}),
1473: target => $_->{target}, });
1474: }
1475:
1476: $result = htmltag( 'li', "$result $crumbsymbol");
1477: } @Crumbs;
1478:
1479: #should the last Element be translated?
1480:
1481: my $lasttext = $last->{'no_mt'} ? $last->{'text'}
1482: : mt( $last->{'text'} );
1483:
1484: $links .= htmltag( 'li', htmltag('b', $lasttext), {title => $lasttext});
1485:
1486: my $icons = '';
1487: $faq = $last->{'faq'} if (exists($last->{'faq'}));
1488: $bug = $last->{'bug'} if (exists($last->{'bug'}));
1489: $help = $last->{'help'} if (exists($last->{'help'}));
1490: $component_help=($component_help?$component_help:$help);
1491: # if ($faq ne '') {
1492: # $icons .= &Apache::loncommon::help_open_faq($faq);
1493: # }
1494: # if ($bug ne '') {
1495: # $icons .= &Apache::loncommon::help_open_bug($bug);
1496: # }
1497: if ($faq ne '' || $component_help ne '' || $bug ne '') {
1498: $icons .= &Apache::loncommon::help_open_menu($component,
1499: $component_help,
1500: $faq,$bug);
1501: }
1502: #
1503:
1504:
1505: unless ($CourseBreadcrumbs) {
1506: $links = htmltag('ol', $links, { id => "LC_MenuBreadcrumbs" });
1507: } else {
1508: $links = htmltag('ul', $links, { class => "LC_CourseBreadcrumbs" });
1509: }
1510:
1511: if ($component) {
1512: $links = htmltag('span',
1513: ( $no_mt ? $component : mt($component) ).
1514: ( $icons ? $icons : '' ),
1515: { class => 'LC_breadcrumbs_component' } )
1516: .$links;
1517: }
1518:
1519: render_tools(\$links);
1520: $links = htmltag('div', $links,
1521: { id => "LC_breadcrumbs" }) unless ($CourseBreadcrumbs) ;
1522: render_advtools(\$links);
1523:
1524: # Return the @Crumbs stack to what we started with
1525: push(@Crumbs,$last);
1526: shift(@Crumbs);
1527: # Return the breadcrumb's line
1528: return "$links";
1529: }
1530:
1531: sub clear_breadcrumbs {
1532: undef(@Crumbs);
1533: undef(%tools);
1534: }
1535:
1536: sub add_breadcrumb {
1537: push(@Crumbs,@_);
1538: }
1539:
1540: =item add_breadcrumb_tool($category, $html)
1541:
1542: Adds $html to $category of the breadcrumb toolbar container.
1543:
1544: $html is usually a link to a page that invokes a function on the currently
1545: displayed data (e.g. print when viewing a problem)
1546:
1547: Currently there are 3 possible values for $category:
1548:
1549: =over
1550:
1551: =item navigation
1552: left of breadcrumbs line
1553:
1554: =item tools
1555: right of breadcrumbs line
1556:
1557: =item advtools
1558: advanced tools shown in a separate box below breadcrumbs line
1559:
1560: =back
1561:
1562: returns: nothing
1563:
1564: =cut
1565:
1566: sub add_breadcrumb_tool {
1567: my ($category, @html) = @_;
1568: return unless @html;
1569: if (!defined(%tools)) {
1570: %tools = ( navigation => [], tools => [], advtools => []);
1571: }
1572:
1573: #this cleans data received from lonmenu::innerregister
1574: @html = grep {defined $_ && $_ ne ''} @html;
1575: for (@html) {
1576: s/align="(right|left)"//;
1577: s/<span.*?\/span>// if $category ne 'advtools';
1578: }
1579:
1580: push @{$tools{$category}}, @html;
1581: }
1582:
1583: =item clear_breadcrumb_tools()
1584:
1585: Clears the breadcrumb toolbar container.
1586:
1587: returns: nothing
1588:
1589: =cut
1590:
1591: sub clear_breadcrumb_tools {
1592: undef(%tools);
1593: }
1594:
1595: =item render_tools(\$breadcrumbs)
1596:
1597: Creates html for breadcrumb tools (categories navigation and tools) and inserts
1598: \$breadcrumbs at the correct position.
1599:
1600: input: \$breadcrumbs - a reference to the string containing prepared
1601: breadcrumbs.
1602:
1603: returns: nothing
1604: =cut
1605:
1606: #TODO might split this in separate functions for each category
1607: sub render_tools {
1608: my ($breadcrumbs) = @_;
1609: return unless defined %tools;
1610:
1611: my $navigation = list_from_array($tools{navigation},
1612: { listattr => { class=>"LC_breadcrumb_tools_navigation" } });
1613: my $tools = list_from_array($tools{tools},
1614: { listattr => { class=>"LC_breadcrumb_tools_tools" } });
1615: $$breadcrumbs = list_from_array([$navigation, $tools, $$breadcrumbs],
1616: { listattr => { class=>'LC_breadcrumb_tools_outerlist' } });
1617: }
1618:
1619: =item render_advtools(\$breadcrumbs)
1620:
1621: Creates html for advanced tools (category advtools) and inserts \$breadcrumbs
1622: at the correct position.
1623:
1624: input: \$breadcrumbs - a reference to the string containing prepared
1625: breadcrumbs (after render_tools call).
1626:
1627: returns: nothing
1628: =cut
1629:
1630: sub render_advtools {
1631: my ($breadcrumbs) = @_;
1632: return unless (defined $tools{'advtools'})
1633: and (scalar(@{$tools{'advtools'}}) > 0);
1634:
1635: $$breadcrumbs .= Apache::loncommon::head_subbox(
1636: funclist_from_array($tools{'advtools'}) );
1637: }
1638:
1639: } # End of scope for @Crumbs
1640:
1641: ############################################################
1642: ############################################################
1643:
1644: # Nested table routines.
1645: #
1646: # Routines to display form items in a multi-row table with 2 columns.
1647: # Uses nested tables to divide form elements into segments.
1648: # For examples of use see loncom/interface/lonnotify.pm
1649: #
1650: # Can be used in following order: ...
1651: # &start_pick_box()
1652: # row1
1653: # row2
1654: # row3 ... etc.
1655: # &submit_row()
1656: # &end_pick_box()
1657: #
1658: # where row1, row 2 etc. are chosen from &role_select_row,&course_select_row,
1659: # &status_select_row and &email_default_row
1660: #
1661: # Can also be used in following order:
1662: #
1663: # &start_pick_box()
1664: # &row_title()
1665: # &row_closure()
1666: # &row_title()
1667: # &row_closure() ... etc.
1668: # &submit_row()
1669: # &end_pick_box()
1670: #
1671: # In general a &submit_row() call should proceed the call to &end_pick_box(),
1672: # as this routine adds a button for form submission.
1673: # &submit_row() does not require a &row_closure after it.
1674: #
1675: # &start_pick_box() creates a bounding table with 1-pixel wide black border.
1676: # rows should be placed between calls to &start_pick_box() and &end_pick_box.
1677: #
1678: # &row_title() adds a title in the left column for each segment.
1679: # &row_closure() closes a row with a 1-pixel wide black line.
1680: #
1681: # &role_select_row() provides a select box from which to choose 1 or more roles
1682: # &course_select_row provides ways of picking groups of courses
1683: # radio buttons: all, by category or by picking from a course picker pop-up
1684: # note: by category option is only displayed if a domain has implemented
1685: # selection by year, semester, department, number etc.
1686: #
1687: # &status_select_row() provides a select box from which to choose 1 or more
1688: # access types (current access, prior access, and future access)
1689: #
1690: # &email_default_row() provides text boxes for default e-mail suffixes for
1691: # different authentication types in a domain.
1692: #
1693: # &row_title() and &row_closure() are called internally by the &*_select_row
1694: # routines, but can also be called directly to start and end rows which have
1695: # needs that are not accommodated by the *_select_row() routines.
1696:
1697: { # Start: row_count block for pick_box
1698: my @row_count;
1699:
1700: sub start_pick_box {
1701: my ($css_class) = @_;
1702: if (defined($css_class)) {
1703: $css_class = 'class="'.$css_class.'"';
1704: } else {
1705: $css_class= 'class="LC_pick_box"';
1706: }
1707: unshift(@row_count,0);
1708: my $output = <<"END";
1709: <table $css_class>
1710: END
1711: return $output;
1712: }
1713:
1714: sub end_pick_box {
1715: shift(@row_count);
1716: my $output = <<"END";
1717: </table>
1718: END
1719: return $output;
1720: }
1721:
1722: sub row_headline {
1723: my $output = <<"END";
1724: <tr><td colspan="2">
1725: END
1726: return $output;
1727: }
1728:
1729: sub row_title {
1730: my ($title,$css_title_class,$css_value_class, $css_value_furtherAttributes) = @_;
1731: $row_count[0]++;
1732: my $css_class = ($row_count[0] % 2)?'LC_odd_row':'LC_even_row';
1733: $css_title_class ||= 'LC_pick_box_title';
1734: $css_title_class = 'class="'.$css_title_class.'"';
1735:
1736: $css_value_class ||= 'LC_pick_box_value';
1737:
1738: if ($title ne '') {
1739: $title .= ':';
1740: }
1741: my $output = <<"ENDONE";
1742: <tr class="LC_pick_box_row" $css_value_furtherAttributes>
1743: <td $css_title_class>
1744: $title
1745: </td>
1746: <td class="$css_value_class $css_class">
1747: ENDONE
1748: return $output;
1749: }
1750:
1751: sub row_closure {
1752: my ($no_separator) =@_;
1753: my $output = <<"ENDTWO";
1754: </td>
1755: </tr>
1756: ENDTWO
1757: if (!$no_separator) {
1758: $output .= <<"ENDTWO";
1759: <tr>
1760: <td colspan="2" class="LC_pick_box_separator">
1761: </td>
1762: </tr>
1763: ENDTWO
1764: }
1765: return $output;
1766: }
1767:
1768: } # End: row_count block for pick_box
1769:
1770:
1771: sub role_select_row {
1772: my ($roles,$title,$css_class,$show_separate_custom,$cdom,$cnum) = @_;
1773: my $crstype = 'Course';
1774: if ($cdom ne '' && $cnum ne '') {
1775: $crstype = &Apache::loncommon::course_type($cdom.'_'.$cnum);
1776: }
1777: my $output;
1778: if (defined($title)) {
1779: $output = &row_title($title,$css_class);
1780: }
1781: $output .= qq|
1782: <select name="roles" multiple="multiple">\n|;
1783: foreach my $role (@$roles) {
1784: my $plrole;
1785: if ($role eq 'ow') {
1786: $plrole = &mt('Course Owner');
1787: } elsif ($role eq 'cr') {
1788: if ($show_separate_custom) {
1789: if ($cdom ne '' && $cnum ne '') {
1790: my %course_customroles = &course_custom_roles($cdom,$cnum);
1791: foreach my $crrole (sort(keys(%course_customroles))) {
1792: my ($plcrrole) = ($crrole =~ m|^cr/[^/]+/[^/]+/(.+)$|);
1793: $output .= ' <option value="'.$crrole.'">'.$plcrrole.
1794: '</option>';
1795: }
1796: }
1797: } else {
1798: $plrole = &mt('Custom Role');
1799: }
1800: } else {
1801: $plrole=&Apache::lonnet::plaintext($role,$crstype);
1802: }
1803: if (($role ne 'cr') || (!$show_separate_custom)) {
1804: $output .= ' <option value="'.$role.'">'.$plrole.'</option>';
1805: }
1806: }
1807: $output .= qq| </select>\n|;
1808: if (defined($title)) {
1809: $output .= &row_closure();
1810: }
1811: return $output;
1812: }
1813:
1814: sub course_select_row {
1815: my ($title,$formname,$totcodes,$codetitles,$idlist,$idlist_titles,
1816: $css_class,$crstype) = @_;
1817: my $output = &row_title($title,$css_class);
1818: $output .= &course_selection($formname,$totcodes,$codetitles,$idlist,$idlist_titles,$crstype);
1819: $output .= &row_closure();
1820: return $output;
1821: }
1822:
1823: sub course_selection {
1824: my ($formname,$totcodes,$codetitles,$idlist,$idlist_titles,$crstype) = @_;
1825: my $output = qq|
1826: <script type="text/javascript">
1827: // <![CDATA[
1828: function coursePick (formname) {
1829: for (var i=0; i<formname.coursepick.length; i++) {
1830: if (formname.coursepick[i].value == 'category') {
1831: courseSet('');
1832: }
1833: if (!formname.coursepick[i].checked) {
1834: if (formname.coursepick[i].value == 'specific') {
1835: formname.coursetotal.value = 0;
1836: formname.courselist = '';
1837: }
1838: }
1839: }
1840: }
1841: function setPick (formname) {
1842: for (var i=0; i<formname.coursepick.length; i++) {
1843: if (formname.coursepick[i].value == 'category') {
1844: formname.coursepick[i].checked = true;
1845: }
1846: formname.coursetotal.value = 0;
1847: formname.courselist = '';
1848: }
1849: }
1850: // ]]>
1851: </script>
1852: |;
1853:
1854: my ($allcrs,$pickspec);
1855: if ($crstype eq 'Community') {
1856: $allcrs = &mt('All communities');
1857: $pickspec = &mt('Pick specific communities:');
1858: } else {
1859: $allcrs = &mt('All courses');
1860: $pickspec = &mt('Pick specific course(s):');
1861: }
1862:
1863: my $courseform='<b>'.&Apache::loncommon::selectcourse_link
1864: ($formname,'pickcourse','pickdomain','coursedesc','',1,$crstype).'</b>';
1865: $output .= '<input type="radio" name="coursepick" value="all" onclick="coursePick(this.form)" />'.$allcrs.'<br />';
1866: if ($totcodes > 0) {
1867: my $numtitles = @$codetitles;
1868: if ($numtitles > 0) {
1869: $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 />';
1870: $output .= '<table><tr><td>'.$$codetitles[0].'<br />'."\n".
1871: '<select name="'.$$codetitles[0].
1872: '" onChange="setPick(this.form);courseSet('."'$$codetitles[0]'".')">'."\n".
1873: ' <option value="-1" />Select'."\n";
1874: my @items = ();
1875: my @longitems = ();
1876: if ($$idlist{$$codetitles[0]} =~ /","/) {
1877: @items = split(/","/,$$idlist{$$codetitles[0]});
1878: } else {
1879: $items[0] = $$idlist{$$codetitles[0]};
1880: }
1881: if (defined($$idlist_titles{$$codetitles[0]})) {
1882: if ($$idlist_titles{$$codetitles[0]} =~ /","/) {
1883: @longitems = split(/","/,$$idlist_titles{$$codetitles[0]});
1884: } else {
1885: $longitems[0] = $$idlist_titles{$$codetitles[0]};
1886: }
1887: for (my $i=0; $i<@longitems; $i++) {
1888: if ($longitems[$i] eq '') {
1889: $longitems[$i] = $items[$i];
1890: }
1891: }
1892: } else {
1893: @longitems = @items;
1894: }
1895: for (my $i=0; $i<@items; $i++) {
1896: $output .= ' <option value="'.$items[$i].'">'.$longitems[$i].'</option>';
1897: }
1898: $output .= '</select></td>';
1899: for (my $i=1; $i<$numtitles; $i++) {
1900: $output .= '<td>'.$$codetitles[$i].'<br />'."\n".
1901: '<select name="'.$$codetitles[$i].
1902: '" onChange="courseSet('."'$$codetitles[$i]'".')">'."\n".
1903: '<option value="-1"><-Pick '.$$codetitles[$i-1].'</option>'."\n".
1904: '</select>'."\n".
1905: '</td>';
1906: }
1907: $output .= '</tr></table><br />';
1908: }
1909: }
1910: $output .= '<input type="radio" name="coursepick" value="specific" onclick="coursePick(this.form);opencrsbrowser('."'".$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";
1911: return $output;
1912: }
1913:
1914: sub status_select_row {
1915: my ($types,$title,$css_class) = @_;
1916: my $output;
1917: if (defined($title)) {
1918: $output = &row_title($title,$css_class,'LC_pick_box_select');
1919: }
1920: $output .= qq|
1921: <select name="types" multiple="multiple">\n|;
1922: foreach my $status_type (sort(keys(%{$types}))) {
1923: $output .= ' <option value="'.$status_type.'">'.$$types{$status_type}.'</option>';
1924: }
1925: $output .= qq| </select>\n|;
1926: if (defined($title)) {
1927: $output .= &row_closure();
1928: }
1929: return $output;
1930: }
1931:
1932: sub email_default_row {
1933: my ($authtypes,$title,$descrip,$css_class) = @_;
1934: my $output = &row_title($title,$css_class);
1935: $output .= $descrip.
1936: &Apache::loncommon::start_data_table().
1937: &Apache::loncommon::start_data_table_header_row().
1938: '<th>'.&mt('Authentication Method').'</th>'.
1939: '<th align="right">'.&mt('Username -> e-mail conversion').'</th>'."\n".
1940: &Apache::loncommon::end_data_table_header_row();
1941: my $rownum = 0;
1942: foreach my $auth (sort(keys(%{$authtypes}))) {
1943: my ($userentry,$size);
1944: if ($auth =~ /^krb/) {
1945: $userentry = '';
1946: $size = 25;
1947: } else {
1948: $userentry = 'username@';
1949: $size = 15;
1950: }
1951: $output .= &Apache::loncommon::start_data_table_row().
1952: '<td> '.$$authtypes{$auth}.'</td>'.
1953: '<td align="right">'.$userentry.
1954: '<input type="text" name="'.$auth.'" size="'.$size.'" /></td>'.
1955: &Apache::loncommon::end_data_table_row();
1956: }
1957: $output .= &Apache::loncommon::end_data_table();
1958: $output .= &row_closure();
1959: return $output;
1960: }
1961:
1962:
1963: sub submit_row {
1964: my ($title,$cmd,$submit_text,$css_class) = @_;
1965: my $output = &row_title($title,$css_class,'LC_pick_box_submit');
1966: $output .= qq|
1967: <br />
1968: <input type="hidden" name="command" value="$cmd" />
1969: <input type="submit" value="$submit_text"/>
1970: <br /><br />
1971: \n|;
1972: return $output;
1973: }
1974:
1975: sub course_custom_roles {
1976: my ($cdom,$cnum) = @_;
1977: my %returnhash=();
1978: my %coursepersonnel=&Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
1979: foreach my $person (sort(keys(%coursepersonnel))) {
1980: my ($role) = ($person =~ /^([^:]+):/);
1981: my ($end,$start) = split(/:/,$coursepersonnel{$person});
1982: if ($end == -1 && $start == -1) {
1983: next;
1984: }
1985: if ($role =~ m|^cr/[^/]+/[^/]+/[^/]|) {
1986: $returnhash{$role} ++;
1987: }
1988: }
1989: return %returnhash;
1990: }
1991:
1992:
1993: ##############################################
1994: ##############################################
1995:
1996: # topic_bar
1997: #
1998: # Generates a div containing an (optional) number with a white background followed by a
1999: # title with a background color defined in the corresponding CSS: LC_topic_bar
2000: # Inputs:
2001: # 1. number to display.
2002: # If input for number is empty only the title will be displayed.
2003: # 2. title text to display.
2004: # Outputs - a scalar containing html mark-up for the div.
2005:
2006: sub topic_bar {
2007: my ($num,$title) = @_;
2008: my $number = '';
2009: if ($num ne '') {
2010: $number = '<span>'.$num.'</span>';
2011: }
2012: return '<div class="LC_topic_bar">'.$number.$title.'</div>';
2013: }
2014:
2015: ##############################################
2016: ##############################################
2017: # echo_form_input
2018: #
2019: # Generates html markup to add form elements from the referrer page
2020: # as hidden form elements (values encoded) in the new page.
2021: #
2022: # Intended to support two types of use
2023: # (a) to allow backing up to earlier pages in a multi-page
2024: # form submission process using a breadcrumb trail.
2025: #
2026: # (b) to allow the current page to be reloaded with form elements
2027: # set on previous page to remain unchanged. An example would
2028: # be where the a page containing a dynamically-built table of data is
2029: # is to be redisplayed, with only the sort order of the data changed.
2030: #
2031: # Inputs:
2032: # 1. Reference to array of form elements in the submitted form on
2033: # the referrer page which are to be excluded from the echoed elements.
2034: #
2035: # 2. Reference to array of regular expressions, which if matched in the
2036: # name of the form element n the referrer page will be omitted from echo.
2037: #
2038: # Outputs: A scalar containing the html markup for the echoed form
2039: # elements (all as hidden elements, with values encoded).
2040:
2041:
2042: sub echo_form_input {
2043: my ($excluded,$regexps) = @_;
2044: my $output = '';
2045: foreach my $key (keys(%env)) {
2046: if ($key =~ /^form\.(.+)$/) {
2047: my $name = $1;
2048: my $match = 0;
2049: if ((!@{$excluded}) || (!grep/^$name$/,@{$excluded})) {
2050: if (defined($regexps)) {
2051: if (@{$regexps} > 0) {
2052: foreach my $regexp (@{$regexps}) {
2053: if ($name =~ /\Q$regexp\E/) {
2054: $match = 1;
2055: last;
2056: }
2057: }
2058: }
2059: }
2060: if (!$match) {
2061: if (ref($env{$key})) {
2062: foreach my $value (@{$env{$key}}) {
2063: $value = &HTML::Entities::encode($value,'<>&"');
2064: $output .= '<input type="hidden" name="'.$name.
2065: '" value="'.$value.'" />'."\n";
2066: }
2067: } else {
2068: my $value = &HTML::Entities::encode($env{$key},'<>&"');
2069: $output .= '<input type="hidden" name="'.$name.
2070: '" value="'.$value.'" />'."\n";
2071: }
2072: }
2073: }
2074: }
2075: }
2076: return $output;
2077: }
2078:
2079: ##############################################
2080: ##############################################
2081: # set_form_elements
2082: #
2083: # Generates javascript to set form elements to values based on
2084: # corresponding values for the same form elements when the page was
2085: # previously submitted.
2086: #
2087: # Last submission values are read from hidden form elements in referring
2088: # page which have the same name, i.e., generated by &echo_form_input().
2089: #
2090: # Intended to be called by onload event.
2091: #
2092: # Inputs:
2093: # (a) Reference to hash of echoed form elements to be set.
2094: #
2095: # In the hash, keys are the form element names, and the values are the
2096: # element type (selectbox, radio, checkbox or text -for textbox, textarea or
2097: # hidden).
2098: #
2099: # (b) Optional reference to hash of stored elements to be set.
2100: #
2101: # If the page being displayed is a page which permits modification of
2102: # previously stored data, e.g., the first page in a multi-page submission,
2103: # then if stored is supplied, form elements will be set to the last stored
2104: # values. If user supplied values are also available for the same elements
2105: # these will replace the stored values.
2106: #
2107: # Output:
2108: #
2109: # javascript function - set_form_elements() which sets form elements,
2110: # expects an argument: formname - the name of the form according to
2111: # the DOM, e.g., document.compose
2112:
2113: sub set_form_elements {
2114: my ($elements,$stored) = @_;
2115: my %values;
2116: my $output .= 'function setFormElements(courseForm) {
2117: ';
2118: if (defined($stored)) {
2119: foreach my $name (keys(%{$stored})) {
2120: if (exists($$elements{$name})) {
2121: if (ref($$stored{$name}) eq 'ARRAY') {
2122: $values{$name} = $$stored{$name};
2123: } else {
2124: @{$values{$name}} = ($$stored{$name});
2125: }
2126: }
2127: }
2128: }
2129:
2130: foreach my $key (keys(%env)) {
2131: if ($key =~ /^form\.(.+)$/) {
2132: my $name = $1;
2133: if (exists($$elements{$name})) {
2134: @{$values{$name}} = &Apache::loncommon::get_env_multiple($key);
2135: }
2136: }
2137: }
2138:
2139: foreach my $name (keys(%values)) {
2140: for (my $i=0; $i<@{$values{$name}}; $i++) {
2141: $values{$name}[$i] = &HTML::Entities::decode($values{$name}[$i],'<>&"');
2142: $values{$name}[$i] =~ s/([\r\n\f]+)/\\n/g;
2143: $values{$name}[$i] =~ s/"/\\"/g;
2144: }
2145: if (($$elements{$name} eq 'text') || ($$elements{$name} eq 'hidden')) {
2146: my $numvalues = @{$values{$name}};
2147: if ($numvalues > 1) {
2148: my $valuestring = join('","',@{$values{$name}});
2149: $output .= qq|
2150: var textvalues = new Array ("$valuestring");
2151: var total = courseForm.elements['$name'].length;
2152: if (total > $numvalues) {
2153: total = $numvalues;
2154: }
2155: for (var i=0; i<total; i++) {
2156: courseForm.elements['$name']\[i].value = textvalues[i];
2157: }
2158: |;
2159: } else {
2160: $output .= qq|
2161: courseForm.elements['$name'].value = "$values{$name}[0]";
2162: |;
2163: }
2164: } else {
2165: $output .= qq|
2166: var elementLength = courseForm.elements['$name'].length;
2167: if (elementLength==undefined) {
2168: |;
2169: foreach my $value (@{$values{$name}}) {
2170: if ($$elements{$name} eq 'selectbox') {
2171: $output .= qq|
2172: if (courseForm.elements['$name'].options[0].value == "$value") {
2173: courseForm.elements['$name'].options[0].selected = true;
2174: }|;
2175: } elsif (($$elements{$name} eq 'radio') ||
2176: ($$elements{$name} eq 'checkbox')) {
2177: $output .= qq|
2178: if (courseForm.elements['$name'].value == "$value") {
2179: courseForm.elements['$name'].checked = true;
2180: } else {
2181: courseForm.elements['$name'].checked = false;
2182: }|;
2183: }
2184: }
2185: $output .= qq|
2186: }
2187: else {
2188: for (var i=0; i<courseForm.elements['$name'].length; i++) {
2189: |;
2190: if ($$elements{$name} eq 'selectbox') {
2191: $output .= qq|
2192: courseForm.elements['$name'].options[i].selected = false;|;
2193: } elsif (($$elements{$name} eq 'radio') ||
2194: ($$elements{$name} eq 'checkbox')) {
2195: $output .= qq|
2196: courseForm.elements['$name']\[i].checked = false;|;
2197: }
2198: $output .= qq|
2199: }
2200: for (var j=0; j<courseForm.elements['$name'].length; j++) {
2201: |;
2202: foreach my $value (@{$values{$name}}) {
2203: if ($$elements{$name} eq 'selectbox') {
2204: $output .= qq|
2205: if (courseForm.elements['$name'].options[j].value == "$value") {
2206: courseForm.elements['$name'].options[j].selected = true;
2207: }|;
2208: } elsif (($$elements{$name} eq 'radio') ||
2209: ($$elements{$name} eq 'checkbox')) {
2210: $output .= qq|
2211: if (courseForm.elements['$name']\[j].value == "$value") {
2212: courseForm.elements['$name']\[j].checked = true;
2213: }|;
2214: }
2215: }
2216: $output .= qq|
2217: }
2218: }
2219: |;
2220: }
2221: }
2222: $output .= "
2223: return;
2224: }\n";
2225: return $output;
2226: }
2227:
2228: ##############################################
2229: ##############################################
2230:
2231: # javascript_valid_email
2232: #
2233: # Generates javascript to validate an e-mail address.
2234: # Returns a javascript function which accetps a form field as argumnent, and
2235: # returns false if field.value does not satisfy two regular expression matches
2236: # for a valid e-mail address. Backwards compatible with old browsers without
2237: # support for javascript RegExp (just checks for @ in field.value in this case).
2238:
2239: sub javascript_valid_email {
2240: my $scripttag .= <<'END';
2241: function validmail(field) {
2242: var str = field.value;
2243: if (window.RegExp) {
2244: var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";
2245: var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$"; //"
2246: var reg1 = new RegExp(reg1str);
2247: var reg2 = new RegExp(reg2str);
2248: if (!reg1.test(str) && reg2.test(str)) {
2249: return true;
2250: }
2251: return false;
2252: }
2253: else
2254: {
2255: if(str.indexOf("@") >= 0) {
2256: return true;
2257: }
2258: return false;
2259: }
2260: }
2261: END
2262: return $scripttag;
2263: }
2264:
2265:
2266: # USAGE: htmltag(element, content, {attribute => value,...});
2267: #
2268: # EXAMPLES:
2269: # - htmltag('a', 'this is an anchor', {href => 'www.example.com',
2270: # title => 'this is a title'})
2271: #
2272: # - You might want to set up needed tags like:
2273: #
2274: # my $h3 = sub { return htmltag( "h3", @_ ) };
2275: #
2276: # ... and use them: $h3->("This is a headline")
2277: #
2278: # - To set up a couple of tags, see sub inittags
2279: #
2280: # NOTES:
2281: # - Empty elements, such as <br/> are correctly terminated,
2282: # i.e. htmltag('br') returns <br/>
2283: # - Empty attributes (title="") are filtered out.
2284: # - The function will not check for deprecated attributes.
2285: #
2286: # OUTPUT: content enclosed in xhtml conform tags
2287: sub htmltag{
2288: return
2289: qq|<$_[0]|
2290: . join( '', map { qq| $_="${$_[2]}{$_}"| if ${$_[2]}{$_} } keys %{ $_[2] } )
2291: . ($_[1] ? qq|>$_[1]</$_[0]>| : qq|/>|). "\n";
2292: };
2293:
2294:
2295: # USAGE: inittags(@tags);
2296: #
2297: # EXAMPLES:
2298: # - my ($h1, $h2, $h3) = inittags( qw( h1 h2 h3 ) )
2299: # $h1->("This is a headline") #Returns: <h1>This is a headline</h1>
2300: #
2301: # NOTES: See sub htmltag for further information.
2302: #
2303: # OUTPUT: List of subroutines.
2304: sub inittags {
2305: my @tags = @_;
2306: return map { my $tag = $_;
2307: sub { return htmltag( $tag, @_ ) }
2308: } @tags;
2309: }
2310:
2311:
2312: # USAGE: scripttag(scriptcode, [start|end|both]);
2313: #
2314: # EXAMPLES:
2315: # - scripttag("alert('Hello World!')", 'both')
2316: # returns:
2317: # <script type="text/javascript">
2318: # // BEGIN LON-CAPA Internal
2319: # alert(Hello World!')
2320: # // END LON-CAPA Internal
2321: # </script>
2322: #
2323: # NOTES:
2324: # - works currently only for javascripts
2325: #
2326: # OUTPUT:
2327: # Scriptcode properly enclosed in <script> and CDATA tags (and LC
2328: # Internal markers if 2nd argument is given)
2329: sub scripttag {
2330: my ( $content, $marker ) = @_;
2331: return unless defined $content;
2332:
2333: my $begin = "\n// BEGIN LON-CAPA Internal\n";
2334: my $end = "\n// END LON-CAPA Internal\n";
2335:
2336: if ($marker) {
2337: $content = $begin . $content if $marker eq 'start' or $marker eq 'both';
2338: $content .= $end if $marker eq 'end' or $marker eq 'both';
2339: }
2340:
2341: $content = "\n// <![CDATA[\n$content\n// ]]>\n";
2342:
2343: return htmltag('script', $content, {type => 'text/javascript'});
2344: };
2345:
2346:
2347: =item list_from_array( \@array, { listattr =>{}, itemattr =>{} } )
2348:
2349: Constructs a XHTML list from \@array.
2350:
2351: input:
2352:
2353: =over
2354:
2355: =item \@array
2356:
2357: A reference to the array containing text that will be wrapped in <li></li> tags.
2358:
2359: =item { listattr => {}, itemattr =>{} }
2360:
2361: Attributes for <ul> and <li> passed in as hash references.
2362: See htmltag() for more details.
2363:
2364: =back
2365:
2366: returns: XHTML list as String.
2367:
2368: =cut
2369:
2370: # \@items, {listattr => { class => 'abc', id => 'xyx' }, itemattr => {class => 'abc', id => 'xyx'}}
2371: sub list_from_array {
2372: my ($items, $args) = @_;
2373: my ($ul, $li) = inittags( qw(ul li) );
2374: my $listitems = join '', map { $li->($_, $args->{itemattr}) } @$items;
2375: return $ul->( $listitems, $args->{listattr} );
2376: }
2377:
2378:
2379: ##############################################
2380: ##############################################
2381:
2382: # generate_menu
2383: #
2384: # Generates html markup for a menu.
2385: #
2386: # Inputs:
2387: # An array of following structure:
2388: # ({ categorytitle => 'Categorytitle',
2389: # items => [
2390: # {
2391: # linktext => 'Text to be displayed',
2392: # url => 'URL the link is pointing to, i.e. /adm/site?action=dosomething',
2393: # permission => 'Contains permissions as returned from lonnet::allowed(),
2394: # must evaluate to true in order to activate the link',
2395: # icon => 'icon filename',
2396: # alttext => 'alt text for the icon',
2397: # help => 'Name of the corresponding helpfile',
2398: # linktitle => 'Description of the link (used for title tag)'
2399: # },
2400: # ...
2401: # ]
2402: # },
2403: # ...
2404: # )
2405: #
2406: # Outputs: A scalar containing the html markup for the menu.
2407:
2408: sub generate_menu {
2409: my @menu = @_;
2410: # subs for specific html elements
2411: my ($h3, $div, $ul, $li, $a, $img) = inittags( qw(h3 div ul li a img) );
2412:
2413: my @categories; # each element represents the entire markup for a category
2414:
2415: foreach my $category (@menu) {
2416: my @links; # contains the links for the current $category
2417: foreach my $link (@{$$category{items}}) {
2418: next unless $$link{permission};
2419:
2420: # create the markup for the current $link and push it into @links.
2421: # each entry consists of an image and a text optionally followed
2422: # by a help link.
2423: push(@links,$li->(
2424: $a->(
2425: $img->("", {
2426: class => "LC_noBorder LC_middle",
2427: src => "/res/adm/pages/$$link{icon}",
2428: alt => mt(defined($$link{alttext}) ?
2429: $$link{alttext} : $$link{linktext})
2430: }), {
2431: href => $$link{url},
2432: title => mt($$link{linktitle})
2433: }).
2434: $a->(mt($$link{linktext}), {
2435: href => $$link{url},
2436: title => mt($$link{linktitle}),
2437: class => "LC_menubuttons_link"
2438: }).
2439: (defined($$link{help}) ?
2440: Apache::loncommon::help_open_topic($$link{help}) : ''),
2441: {class => "LC_menubuttons_inline_text"}));
2442: }
2443:
2444: # wrap categorytitle in <h3>, concatenate with
2445: # joined and in <ul> tags wrapped @links
2446: # and wrap everything in an enclosing <div> and push it into
2447: # @categories
2448: # such that each element looks like:
2449: # <div><h3>title</h3><ul><li>...</li>...</ul></div>
2450: # the category won't be added if there aren't any links
2451: push(@categories,
2452: $div->($h3->(mt($$category{categorytitle}), {class=>"LC_hcell"}).
2453: $ul->(join('' ,@links), {class =>"LC_ListStyleNormal" }),
2454: {class=>"LC_Box LC_400Box"})) if scalar(@links);
2455: }
2456:
2457: # wrap the joined @categories in another <div> (column layout)
2458: return $div->(join('', @categories), {class => "LC_columnSection"});
2459: }
2460:
2461: ##############################################
2462: ##############################################
2463:
2464: =pod
2465:
2466: =item &start_funclist
2467:
2468: Start list of available functions
2469:
2470: Typically used to offer a simple list of available functions
2471: at top or bottom of page.
2472: All available functions/actions for the current page
2473: should be included in this list.
2474:
2475: If the optional headline text is not provided, a default text will be used.
2476:
2477:
2478: Related routines:
2479: =over 4
2480: add_item_funclist
2481: end_funclist
2482: =back
2483:
2484:
2485: Inputs: (optional) headline text
2486:
2487: Returns: HTML code with function list start
2488:
2489: =cut
2490:
2491: ##############################################
2492: ##############################################
2493:
2494: sub start_funclist {
2495: my($legendtext)=@_;
2496: $legendtext=&mt('Functions') if !$legendtext;
2497: return '<ul class="LC_funclist"><li style="font-weight:bold; margin-left:0.8em;">'.$legendtext.'</li>'."\n";
2498: }
2499:
2500:
2501: ##############################################
2502: ##############################################
2503:
2504: =pod
2505:
2506: =item &add_item_funclist
2507:
2508: Adds an item to the list of available functions
2509:
2510: Related routines:
2511: =over 4
2512: start_funclist
2513: end_funclist
2514: =back
2515:
2516: Inputs: content item with text and link to function
2517:
2518: Returns: HTML code with list item for funclist
2519:
2520: =cut
2521:
2522: ##############################################
2523: ##############################################
2524:
2525: sub add_item_funclist {
2526: my($content) = @_;
2527: return '<li>'.$content.'</li>'."\n";
2528: }
2529:
2530: =pod
2531:
2532: =item &end_funclist
2533:
2534: End list of available functions
2535:
2536: Related routines:
2537: =over 4
2538: start_funclist
2539: add_item_funclist
2540: =back
2541:
2542: Inputs: ./.
2543:
2544: Returns: HTML code with function list end
2545: =cut
2546:
2547: sub end_funclist {
2548: return "</ul>\n";
2549: }
2550:
2551: =pod
2552:
2553: =item funclist_from_array( \@array, {legend => 'text for legend'} )
2554:
2555: Constructs a XHTML list from \@array with the first item being visually
2556: highlighted and set to the value of legend or 'Functions' if legend is
2557: empty.
2558:
2559: =over
2560:
2561: =item \@array
2562:
2563: A reference to the array containing text that will be wrapped in <li></li> tags.
2564:
2565: =item { legend => 'text' }
2566:
2567: A string that's used as visually highlighted first item. 'Functions' is used if
2568: it's value evaluates to false.
2569:
2570: =back
2571:
2572: returns: XHTML list as string.
2573:
2574: =back
2575:
2576: =cut
2577:
2578: sub funclist_from_array {
2579: my ($items, $args) = @_;
2580: $args->{legend} ||= mt('Functions');
2581: return list_from_array( [$args->{legend}, @$items],
2582: { listattr => {class => 'LC_funclist'} });
2583: }
2584:
2585: 1;
2586:
2587: __END__
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