1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.101 2004/11/30 18:42:09 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 Time::Local;
59: use Time::HiRes;
60: use Apache::lonlocal;
61: use strict;
62:
63: ##############################################
64: ##############################################
65:
66: =pod
67:
68: =item authorbombs
69:
70: =cut
71:
72: ##############################################
73: ##############################################
74:
75: sub authorbombs {
76: my $url=shift;
77: $url=&Apache::lonnet::declutter($url);
78: my ($udom,$uname)=($url=~/^(\w+)\/(\w+)\//);
79: my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom);
80: foreach (keys %bombs) {
81: if ($_=~/^$udom\/$uname\//) {
82: return '<a href="/adm/bombs/'.$url.
83: '"><img src="/adm/lonMisc/bomb.gif" border="0" /></a>'.
84: &Apache::loncommon::help_open_topic('About_Bombs');
85: }
86: }
87: return '';
88: }
89:
90: ##############################################
91: ##############################################
92:
93: sub recent_filename {
94: my $area=shift;
95: return 'nohist_recent_'.&Apache::lonnet::escape($area);
96: }
97:
98: sub store_recent {
99: my ($area,$name,$value)=@_;
100: my $file=&recent_filename($area);
101: my %recent=&Apache::lonnet::dump($file);
102: if (scalar(keys(%recent))>10) {
103: # remove oldest value
104: my $oldest=time;
105: my $delkey='';
106: foreach (keys %recent) {
107: my $thistime=(split(/\&/,$recent{$_}))[0];
108: if ($thistime<$oldest) {
109: $oldest=$thistime;
110: $delkey=$_;
111: }
112: }
113: &Apache::lonnet::del($file,[$delkey]);
114: }
115: # store new value
116: &Apache::lonnet::put($file,{ $name =>
117: time.'&'.&Apache::lonnet::escape($value) });
118: }
119:
120: sub remove_recent {
121: my ($area,$names)=@_;
122: my $file=&recent_filename($area);
123: return &Apache::lonnet::del($file,$names);
124: }
125:
126: sub select_recent {
127: my ($area,$fieldname,$event)=@_;
128: my %recent=&Apache::lonnet::dump(&recent_filename($area));
129: my $return="\n<select name='$fieldname'".
130: ($event?" onchange='$event'":'').
131: ">\n<option value=''>--- ".&mt('Recent')." ---</option>";
132: foreach (sort keys %recent) {
133: unless ($_=~/^error\:/) {
134: my $escaped = &Apache::loncommon::escape_url($_);
135: if ($_ =~ /\/$/ && $escaped !~ /\/$/) {
136: $escaped .= '/';
137: }
138: $return.="\n<option value='$escaped'>".
139: &Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]).
140: '</option>';
141: }
142: }
143: $return.="\n</select>\n";
144: return $return;
145: }
146:
147: sub get_recent {
148: my ($area, $n) = @_;
149: my %recent=&Apache::lonnet::dump(&recent_filename($area));
150:
151: # Create hash with key as time and recent as value
152: my %time_hash = ();
153: foreach (keys %recent) {
154: my $thistime=(split(/\&/,$recent{$_}))[0];
155: $time_hash{$thistime} = $_;
156: }
157:
158: # Sort by decreasing time and return key value pairs
159: my %return_hash = ();
160: my $idx = 1;
161: foreach (reverse sort keys %time_hash) {
162: $return_hash{$time_hash{$_}} =
163: &Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]);
164: if ($n && ($idx++ >= $n)) {last;}
165: }
166:
167: return %return_hash;
168: }
169:
170:
171:
172: =pod
173:
174: =item textbox
175:
176: =cut
177:
178: ##############################################
179: ##############################################
180: sub textbox {
181: my ($name,$value,$size,$special) = @_;
182: $size = 40 if (! defined($size));
183: my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
184: 'value="'.$value.'" '.$special.' />';
185: return $Str;
186: }
187:
188: ##############################################
189: ##############################################
190:
191: =pod
192:
193: =item checkbox
194:
195: =cut
196:
197: ##############################################
198: ##############################################
199: sub checkbox {
200: my ($name,$checked,$value) = @_;
201: my $Str = '<input type="checkbox" name="'.$name.'" ';
202: if (defined($value)) {
203: $Str .= 'value="'.$value.'"';
204: }
205: if ($checked) {
206: $Str .= ' checked="1"';
207: }
208: $Str .= ' />';
209: return $Str;
210: }
211:
212: ##############################################
213: ##############################################
214:
215: =pod
216:
217: =item &date_setter
218:
219: &date_setter returns html and javascript for a compact date-setting form.
220: To retrieve values from it, use &get_date_from_form().
221:
222: Inputs
223:
224: =over 4
225:
226: =item $dname
227:
228: The name to prepend to the form elements.
229: The form elements defined will be dname_year, dname_month, dname_day,
230: dname_hour, dname_min, and dname_sec.
231:
232: =item $currentvalue
233:
234: The current setting for this time parameter. A unix format time
235: (time in seconds since the beginning of Jan 1st, 1970, GMT.
236: An undefined value is taken to indicate the value is the current time.
237: Also, to be explicit, a value of 'now' also indicates the current time.
238:
239: =item $special
240:
241: Additional html/javascript to be associated with each element in
242: the date_setter. See lonparmset for example usage.
243:
244: =item $includeempty
245:
246: =item $state
247:
248: Specifies the initial state of the form elements. Either 'disabled' or empty.
249: Defaults to empty, which indiciates the form elements are not disabled.
250:
251: =back
252:
253: Bugs
254:
255: The method used to restrict user input will fail in the year 2400.
256:
257: =cut
258:
259: ##############################################
260: ##############################################
261: sub date_setter {
262: my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
263: $no_hh_mm_ss) = @_;
264: if (! defined($state) || $state ne 'disabled') {
265: $state = '';
266: }
267: if (! defined($no_hh_mm_ss)) {
268: $no_hh_mm_ss = 0;
269: }
270: if (! defined($currentvalue) || $currentvalue eq 'now') {
271: unless ($includeempty) {
272: $currentvalue = time;
273: } else {
274: $currentvalue = 0;
275: }
276: }
277: # other potentially useful values: wkday,yrday,is_daylight_savings
278: my ($sec,$min,$hour,$mday,$month,$year)=('','',undef,'','','');
279: if ($currentvalue) {
280: ($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) =
281: localtime($currentvalue);
282: $year += 1900;
283: }
284: my $result = "\n<!-- $dname date setting form -->\n";
285: $result .= <<ENDJS;
286: <script language="Javascript">
287: function $dname\_checkday() {
288: var day = document.$formname.$dname\_day.value;
289: var month = document.$formname.$dname\_month.value;
290: var year = document.$formname.$dname\_year.value;
291: var valid = true;
292: if (day < 1) {
293: document.$formname.$dname\_day.value = 1;
294: }
295: if (day > 31) {
296: document.$formname.$dname\_day.value = 31;
297: }
298: if ((month == 1) || (month == 3) || (month == 5) ||
299: (month == 7) || (month == 8) || (month == 10) ||
300: (month == 12)) {
301: if (day > 31) {
302: document.$formname.$dname\_day.value = 31;
303: day = 31;
304: }
305: } else if (month == 2 ) {
306: if ((year % 4 == 0) && (year % 100 != 0)) {
307: if (day > 29) {
308: document.$formname.$dname\_day.value = 29;
309: }
310: } else if (day > 29) {
311: document.$formname.$dname\_day.value = 28;
312: }
313: } else if (day > 30) {
314: document.$formname.$dname\_day.value = 30;
315: }
316: }
317:
318: function $dname\_disable() {
319: document.$formname.$dname\_month.disabled=true;
320: document.$formname.$dname\_day.disabled=true;
321: document.$formname.$dname\_year.disabled=true;
322: document.$formname.$dname\_hour.disabled=true;
323: document.$formname.$dname\_minute.disabled=true;
324: document.$formname.$dname\_second.disabled=true;
325: }
326:
327: function $dname\_enable() {
328: document.$formname.$dname\_month.disabled=false;
329: document.$formname.$dname\_day.disabled=false;
330: document.$formname.$dname\_year.disabled=false;
331: document.$formname.$dname\_hour.disabled=false;
332: document.$formname.$dname\_minute.disabled=false;
333: document.$formname.$dname\_second.disabled=false;
334: }
335:
336: function $dname\_opencalendar() {
337: if (! document.$formname.$dname\_month.disabled) {
338: var calwin=window.open(
339: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
340: document.$formname.$dname\_month.value+"&year="+
341: document.$formname.$dname\_year.value,
342: "LONCAPAcal",
343: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
344: }
345:
346: }
347: </script>
348: ENDJS
349: $result .= ' <nobr>';
350: my $monthselector = qq{<select name="$dname\_month" $special $state onchange="javascript:$dname\_checkday()" >};
351: # Month
352: my @Months = qw/January February March April May June
353: July August September October November December/;
354: # Pad @Months with a bogus value to make indexing easier
355: unshift(@Months,'If you can read this an error occurred');
356: if ($includeempty) { $monthselector.="<option value=''></option>"; }
357: for(my $m = 1;$m <=$#Months;$m++) {
358: $monthselector .= qq{ <option value="$m" };
359: $monthselector .= "selected " if ($m-1 eq $month);
360: $monthselector .= '> '.&mt($Months[$m]).' </option>';
361: }
362: $monthselector.= ' </select>';
363: # Day
364: my $dayselector = qq{<input type="text" name="$dname\_day" $state value="$mday" size="3" $special onchange="javascript:$dname\_checkday()" />};
365: # Year
366: my $yearselector = qq{<input type="year" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
367: #
368: my $hourselector = qq{<select name="$dname\_hour" $special $state >};
369: if ($includeempty) {
370: $hourselector.=qq{<option value=''></option>};
371: }
372: for (my $h = 0;$h<24;$h++) {
373: $hourselector .= qq{<option value="$h" };
374: $hourselector .= "selected " if (defined($hour) && $hour == $h);
375: $hourselector .= ">";
376: my $timest='';
377: if ($h == 0) {
378: $timest .= "12 am";
379: } elsif($h == 12) {
380: $timest .= "12 noon";
381: } elsif($h < 12) {
382: $timest .= "$h am";
383: } else {
384: $timest .= $h-12 ." pm";
385: }
386: $timest=&mt($timest);
387: $hourselector .= $timest." </option>\n";
388: }
389: $hourselector .= " </select>\n";
390: my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
391: my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
392: my $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
393: #
394: if ($no_hh_mm_ss) {
395: $result .= &mt('[_1] [_2] [_3] [_4]Select Date[_5]',
396: $monthselector,$dayselector,$yearselector,
397: $cal_link,'</a>');
398: } else {
399: $result .= &mt('[_1] [_2] [_3] [_4] [_5]m [_6]s [_7]Select Date[_8]',
400: $monthselector,$dayselector,$yearselector,
401: $hourselector,$minuteselector,$secondselector,
402: $cal_link,'</a>');
403: }
404: $result .= "</nobr>\n<!-- end $dname date setting form -->\n";
405: return $result;
406: }
407:
408: ##############################################
409: ##############################################
410:
411: =pod
412:
413: =item &get_date_from_form
414:
415: get_date_from_form retrieves the date specified in an &date_setter form.
416:
417: Inputs:
418:
419: =over 4
420:
421: =item $dname
422:
423: The name passed to &datesetter, which prefixes the form elements.
424:
425: =item $defaulttime
426:
427: The unix time to use as the default in case of poor inputs.
428:
429: =back
430:
431: Returns: Unix time represented in the form.
432:
433: =cut
434:
435: ##############################################
436: ##############################################
437: sub get_date_from_form {
438: my ($dname) = @_;
439: my ($sec,$min,$hour,$day,$month,$year);
440: #
441: if (defined($ENV{'form.'.$dname.'_second'})) {
442: my $tmpsec = $ENV{'form.'.$dname.'_second'};
443: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
444: $sec = $tmpsec;
445: }
446: if (!defined($tmpsec) || $tmpsec eq '') { $sec = 0; }
447: } else {
448: $sec = 0;
449: }
450: if (defined($ENV{'form.'.$dname.'_minute'})) {
451: my $tmpmin = $ENV{'form.'.$dname.'_minute'};
452: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
453: $min = $tmpmin;
454: }
455: if (!defined($tmpmin) || $tmpmin eq '') { $min = 0; }
456: } else {
457: $min = 0;
458: }
459: if (defined($ENV{'form.'.$dname.'_hour'})) {
460: my $tmphour = $ENV{'form.'.$dname.'_hour'};
461: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
462: $hour = $tmphour;
463: }
464: } else {
465: $hour = 0;
466: }
467: if (defined($ENV{'form.'.$dname.'_day'})) {
468: my $tmpday = $ENV{'form.'.$dname.'_day'};
469: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
470: $day = $tmpday;
471: }
472: }
473: if (defined($ENV{'form.'.$dname.'_month'})) {
474: my $tmpmonth = $ENV{'form.'.$dname.'_month'};
475: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
476: $month = $tmpmonth - 1;
477: }
478: }
479: if (defined($ENV{'form.'.$dname.'_year'})) {
480: my $tmpyear = $ENV{'form.'.$dname.'_year'};
481: if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
482: $year = $tmpyear - 1900;
483: }
484: }
485: if (($year<70) || ($year>137)) { return undef; }
486: if (defined($sec) && defined($min) && defined($hour) &&
487: defined($day) && defined($month) && defined($year) &&
488: eval(&timelocal($sec,$min,$hour,$day,$month,$year))) {
489: return &timelocal($sec,$min,$hour,$day,$month,$year);
490: } else {
491: return undef;
492: }
493: }
494:
495: ##############################################
496: ##############################################
497:
498: =pod
499:
500: =item &pjump_javascript_definition()
501:
502: Returns javascript defining the 'pjump' function, which opens up a
503: parameter setting wizard.
504:
505: =cut
506:
507: ##############################################
508: ##############################################
509: sub pjump_javascript_definition {
510: my $Str = <<END;
511: function pjump(type,dis,value,marker,ret,call) {
512: parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
513: +"&value="+escape(value)+"&marker="+escape(marker)
514: +"&return="+escape(ret)
515: +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
516: "height=350,width=350,scrollbars=no,menubar=no");
517: }
518: END
519: return $Str;
520: }
521:
522: ##############################################
523: ##############################################
524:
525: =pod
526:
527: =item &javascript_nothing()
528:
529: Return an appropriate null for the users browser. This is used
530: as the first arguement for window.open calls when you want a blank
531: window that you can then write to.
532:
533: =cut
534:
535: ##############################################
536: ##############################################
537: sub javascript_nothing {
538: # mozilla and other browsers work with "''", but IE on mac does not.
539: my $nothing = "''";
540: my $user_browser;
541: my $user_os;
542: $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
543: $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
544: if (! defined($user_browser) || ! defined($user_os)) {
545: (undef,$user_browser,undef,undef,undef,$user_os) =
546: &Apache::loncommon::decode_user_agent();
547: }
548: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
549: $nothing = "'javascript:void(0);'";
550: }
551: return $nothing;
552: }
553:
554: ##############################################
555: ##############################################
556: sub javascript_docopen {
557: # safari does not understand document.open() and loads "text/html"
558: my $nothing = "''";
559: my $user_browser;
560: my $user_os;
561: $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
562: $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
563: if (! defined($user_browser) || ! defined($user_os)) {
564: (undef,$user_browser,undef,undef,undef,$user_os) =
565: &Apache::loncommon::decode_user_agent();
566: }
567: if ($user_browser eq 'safari' && $user_os =~ 'mac') {
568: $nothing = "document.clear()";
569: } else {
570: $nothing = "document.open('text/html','replace')";
571: }
572: return $nothing;
573: }
574:
575:
576: ##############################################
577: ##############################################
578:
579: =pod
580:
581: =item &StatusOptions()
582:
583: Returns html for a selection box which allows the user to choose the
584: enrollment status of students. The selection box name is 'Status'.
585:
586: Inputs:
587:
588: $status: the currently selected status. If undefined the value of
589: $ENV{'form.Status'} is taken. If that is undefined, a value of 'Active'
590: is used.
591:
592: $formname: The name of the form. If defined the onchange attribute of
593: the selection box is set to document.$formname.submit().
594:
595: $size: the size (number of lines) of the selection box.
596:
597: $onchange: javascript to use when the value is changed. Enclosed in
598: double quotes, ""s, not single quotes.
599:
600: Returns: a perl string as described.
601:
602: =cut
603:
604: ##############################################
605: ##############################################
606: sub StatusOptions {
607: my ($status, $formName,$size,$onchange)=@_;
608: $size = 1 if (!defined($size));
609: if (! defined($status)) {
610: $status = 'Active';
611: $status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
612: }
613:
614: my $OpSel1 = '';
615: my $OpSel2 = '';
616: my $OpSel3 = '';
617:
618: if($status eq 'Any') { $OpSel3 = ' selected'; }
619: elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; }
620: else { $OpSel1 = ' selected'; }
621:
622: my $Str = '';
623: $Str .= '<select name="Status"';
624: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
625: $Str .= ' onchange="document.'.$formName.'.submit()"';
626: }
627: if (defined($onchange)) {
628: $Str .= ' onchange="'.$onchange.'"';
629: }
630: $Str .= ' size="'.$size.'" ';
631: $Str .= '>'."\n";
632: $Str .= '<option value="Active" '.$OpSel1.'>'.
633: &mt('Currently Enrolled').'</option>'."\n";
634: $Str .= '<option value="Expired" '.$OpSel2.'>'.
635: &mt('Previously Enrolled').'</option>'."\n";
636: $Str .= '<option value="Any" '.$OpSel3.'>'.
637: &mt('Any Enrollment Status').'</option>'."\n";
638: $Str .= '</select>'."\n";
639: }
640:
641: ########################################################
642: ########################################################
643:
644: =pod
645:
646: =item Progess Window Handling Routines
647:
648: These routines handle the creation, update, increment, and closure of
649: progress windows. The progress window reports to the user the number
650: of items completed and an estimate of the time required to complete the rest.
651:
652: =over 4
653:
654:
655: =item &Create_PrgWin
656:
657: Writes javascript to the client to open a progress window and returns a
658: data structure used for bookkeeping.
659:
660: Inputs
661:
662: =over 4
663:
664: =item $r Apache request
665:
666: =item $title The title of the progress window
667:
668: =item $heading A description (usually 1 line) of the process being initiated.
669:
670: =item $number_to_do The total number of items being processed.
671:
672: =item $type Either 'popup' or 'inline' (popup is assumed if nothing is
673: specified)
674:
675: =item $width Specify the width in charaters of the input field.
676:
677: =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
678:
679: =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
680:
681: =back
682:
683: Returns a hash containing the progress state data structure.
684:
685:
686: =item &Update_PrgWin
687:
688: Updates the text in the progress indicator. Does not increment the count.
689: See &Increment_PrgWin.
690:
691: Inputs:
692:
693: =over 4
694:
695: =item $r Apache request
696:
697: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
698:
699: =item $displaystring The string to write to the status indicator
700:
701: =back
702:
703: Returns: none
704:
705:
706: =item Increment_PrgWin
707:
708: Increment the count of items completed for the progress window by 1.
709:
710: Inputs:
711:
712: =over 4
713:
714: =item $r Apache request
715:
716: =item $prog_state Pointer to the data structure returned by Create_PrgWin
717:
718: =item $extraInfo A description of the items being iterated over. Typically
719: 'student'.
720:
721: =back
722:
723: Returns: none
724:
725:
726: =item Close_PrgWin
727:
728: Closes the progress window.
729:
730: Inputs:
731:
732: =over 4
733:
734: =item $r Apache request
735:
736: =item $prog_state Pointer to the data structure returned by Create_PrgWin
737:
738: =back
739:
740: Returns: none
741:
742: =back
743:
744: =cut
745:
746: ########################################################
747: ########################################################
748:
749: my $uniq=0;
750: sub get_uniq_name {
751: $uniq++;
752: return 'uniquename'.$uniq;
753: }
754:
755: # Create progress
756: sub Create_PrgWin {
757: my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
758: $inputname)=@_;
759: if (!defined($type)) { $type='popup'; }
760: if (!defined($width)) { $width=55; }
761: my %prog_state;
762: $prog_state{'type'}=$type;
763: if ($type eq 'popup') {
764: $prog_state{'window'}='popwin';
765: #the whole function called through timeout is due to issues
766: #in mozilla Read BUG #2665 if you want to know the whole story
767: &r_print($r,'<script>'.
768: "var popwin;
769: function openpopwin () {
770: popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
771: "popwin.document.writeln(\'<html><head><title>$title</title></head>".
772: "<body bgcolor=\"#88DDFF\">".
773: "<h4>$heading</h4>".
774: "<form name=popremain>".
775: '<input type="text" size="'.$width.'" name="remaining" value="'.
776: &mt('Starting').'"></form>'.
777: "</body></html>\');".
778: "popwin.document.close();}".
779: "\nwindow.setTimeout(openpopwin,0)</script>");
780: $prog_state{'formname'}='popremain';
781: $prog_state{'inputname'}="remaining";
782: } elsif ($type eq 'inline') {
783: $prog_state{'window'}='window';
784: if (!$formname) {
785: $prog_state{'formname'}=&get_uniq_name();
786: &r_print($r,'<form name="'.$prog_state{'formname'}.'">');
787: } else {
788: $prog_state{'formname'}=$formname;
789: }
790: if (!$inputname) {
791: $prog_state{'inputname'}=&get_uniq_name();
792: &r_print($r,$heading.' <input type="text" name="'.$prog_state{'inputname'}.
793: '" size="'.$width.'" />');
794: } else {
795: $prog_state{'inputname'}=$inputname;
796:
797: }
798: if (!$formname) { &r_print($r,'</form>'); }
799: &Update_PrgWin($r,\%prog_state,&mt('Starting'));
800: }
801:
802: $prog_state{'done'}=0;
803: $prog_state{'firststart'}=&Time::HiRes::time();
804: $prog_state{'laststart'}=&Time::HiRes::time();
805: $prog_state{'max'}=$number_to_do;
806:
807: return %prog_state;
808: }
809:
810: # update progress
811: sub Update_PrgWin {
812: my ($r,$prog_state,$displayString)=@_;
813: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
814: $$prog_state{'formname'}.'.'.
815: $$prog_state{'inputname'}.'.value="'.
816: $displayString.'";</script>');
817: $$prog_state{'laststart'}=&Time::HiRes::time();
818: }
819:
820: # increment progress state
821: sub Increment_PrgWin {
822: my ($r,$prog_state,$extraInfo)=@_;
823: $$prog_state{'done'}++;
824: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
825: $$prog_state{'done'} *
826: ($$prog_state{'max'}-$$prog_state{'done'});
827: $time_est = int($time_est);
828: #
829: my $min = int($time_est/60);
830: my $sec = $time_est % 60;
831: #
832: my $str;
833: if ($min == 0 && $sec > 1) {
834: $str = '[_2] seconds';
835: } elsif ($min == 1 && $sec > 1) {
836: $str = '1 minute [_2] seconds';
837: } elsif ($min == 1 && $sec < 2) {
838: $str = '1 minute';
839: } elsif ($min < 10 && $sec > 1) {
840: $str = '[_1] minutes, [_2] seconds';
841: } elsif ($min >= 10 || $sec < 2) {
842: $str = '[_1] minutes';
843: }
844: $time_est = &mt($str,$min,$sec);
845: #
846: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
847: if ($lasttime > 9) {
848: $lasttime = int($lasttime);
849: } elsif ($lasttime < 0.01) {
850: $lasttime = 0;
851: } else {
852: $lasttime = sprintf("%3.2f",$lasttime);
853: }
854: if ($lasttime == 1) {
855: $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
856: } else {
857: $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
858: }
859: #
860: my $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
861: my $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
862: if (! defined($user_browser) || ! defined($user_os)) {
863: (undef,$user_browser,undef,undef,undef,$user_os) =
864: &Apache::loncommon::decode_user_agent();
865: }
866: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
867: $lasttime = '';
868: }
869: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
870: $$prog_state{'formname'}.'.'.
871: $$prog_state{'inputname'}.'.value="'.
872: $$prog_state{'done'}.'/'.$$prog_state{'max'}.
873: ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
874: $$prog_state{'laststart'}=&Time::HiRes::time();
875: }
876:
877: # close Progress Line
878: sub Close_PrgWin {
879: my ($r,$prog_state)=@_;
880: if ($$prog_state{'type'} eq 'popup') {
881: &r_print($r,'<script>popwin.close()</script>'."\n");
882: } elsif ($$prog_state{'type'} eq 'inline') {
883: &Update_PrgWin($r,$prog_state,&mt('Done'));
884: }
885: undef(%$prog_state);
886: }
887:
888: sub r_print {
889: my ($r,$to_print)=@_;
890: if ($r) {
891: $r->print($to_print);
892: $r->rflush();
893: } else {
894: print($to_print);
895: }
896: }
897:
898: # ------------------------------------------------------- Puts directory header
899:
900: sub crumbs {
901: my ($uri,$target,$prefix,$form,$size,$noformat)=@_;
902: if (! defined($size)) {
903: $size = '+2';
904: }
905: if ($target) {
906: $target = ' target="'.
907: &Apache::loncommon::escape_single($target).'"';
908: }
909: my $output='';
910: unless ($noformat) { $output.='<br /><tt><b>'; }
911: $output.='<font size="'.$size.'">'.$prefix.'/';
912: if ($ENV{'user.adv'}) {
913: my $path=$prefix.'/';
914: foreach my $dir (split('/',$uri)) {
915: if (! $dir) { next; }
916: $path .= $dir;
917: unless ($path eq $uri) { $path.='/'; }
918: my $linkpath = &Apache::loncommon::escape_single($path);
919: if ($form) {
920: $linkpath=
921: qq{javascript:$form.action='$linkpath';$form.submit();};
922: }
923: $output.=qq{<a href="$linkpath" $target>$dir</a>/};
924: }
925: } else {
926: $output.=$uri;
927: }
928: unless ($uri=~/\/$/) { $output=~s/\/$//; }
929: return $output.'</font>'.($noformat?'':'</b></tt><br />');
930: }
931:
932: # --------------------- A function that generates a window for the spellchecker
933:
934: sub spellheader {
935: my $nothing = &javascript_nothing();
936: return (<<ENDCHECK);
937: <script type="text/javascript">
938: //<!-- BEGIN LON-CAPA Internal
939: var checkwin;
940:
941: function spellcheckerwindow() {
942: checkwin=window.open($nothing,'spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
943: checkwin.document.writeln('<html><body bgcolor="#DDDDDD"><form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="" /></form></body></html>');
944: checkwin.document.close();
945: }
946: // END LON-CAPA Internal -->
947: </script>
948: ENDCHECK
949: }
950:
951: # ---------------------------------- Generate link to spell checker for a field
952:
953: sub spelllink {
954: my ($form,$field)=@_;
955: my $linktext=&mt('Check Spelling');
956: return (<<ENDLINK);
957: <a href="javascript:if (typeof(document.$form.onsubmit)!='undefined') { document.$form.onsubmit();};spellcheckerwindow();checkwin.document.forms.spellcheckform.text.value=this.document.forms.$form.$field.value;checkwin.document.forms.spellcheckform.submit();">$linktext</a>
958: ENDLINK
959: }
960:
961: # ------------------------------------------------- Output headers for HTMLArea
962:
963: sub htmlareaheaders {
964: if (&htmlareablocked()) { return ''; }
965: unless (&htmlareabrowser()) { return ''; }
966: my $lang='en';
967: if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
968: $lang=&mt('htmlarea_lang');
969: }
970: return (<<ENDHEADERS);
971: <script type="text/javascript">
972: _editor_url='/htmlarea/';
973: _editor_lang='$lang';
974: </script>
975: <script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
976: ENDHEADERS
977: }
978:
979: # ------------------------------------------------- Activate additional buttons
980:
981: sub htmlareaaddbuttons {
982: if (&htmlareablocked()) { return ''; }
983: unless (&htmlareabrowser()) { return ''; }
984: return (<<ENDADDBUTTON);
985: var config=new HTMLArea.Config();
986: config.registerButton('ed_math','LaTeX Inline',
987: '/htmlarea/images/ed_math.gif',false,
988: function(editor,id) {
989: editor.surroundHTML(' <m>\$','\$</m> ');
990: }
991: );
992: config.registerButton('ed_math_eqn','LaTeX Equation',
993: '/htmlarea/images/ed_math_eqn.gif',false,
994: function(editor,id) {
995: editor.surroundHTML(
996: ' \\n<center><m>\\\\[','\\\\]</m></center>\\n ');
997: }
998: );
999: config.toolbar.push(['ed_math','ed_math_eqn']);
1000: ENDADDBUTTON
1001: }
1002:
1003: # ----------------------------------------------------------------- Preferences
1004:
1005: sub disablelink {
1006: my @fields=@_;
1007: if (defined($#fields)) {
1008: unless ($#fields>=0) { return ''; }
1009: }
1010: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=off&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Disable WYSIWYG Editor').'</a>';
1011: }
1012:
1013: sub enablelink {
1014: my @fields=@_;
1015: if (defined($#fields)) {
1016: unless ($#fields>=0) { return ''; }
1017: }
1018: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=on&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Enable WYSIWYG Editor').'</a>';
1019: }
1020:
1021: # ----------------------------------------- Script to activate only some fields
1022:
1023: sub htmlareaselectactive {
1024: my @fields=@_;
1025: unless (&htmlareabrowser()) { return ''; }
1026: if (&htmlareablocked()) { return '<br />'.&enablelink(@fields); }
1027: my $output='<script type="text/javascript" defer="1">'.
1028: &htmlareaaddbuttons();
1029: foreach(@fields) {
1030: $output.="\nHTMLArea.replace('$_',config);";
1031: }
1032: $output.="\nwindow.status='Activated Editfields';\n</script><br />".
1033: &disablelink(@fields);
1034: return $output;
1035: }
1036:
1037: # --------------------------------------------------------------------- Blocked
1038:
1039: sub htmlareablocked {
1040: unless ($ENV{'environment.wysiwygeditor'} eq 'on') { return 1; }
1041: return 0;
1042: }
1043:
1044: # ---------------------------------------- Browser capable of running HTMLArea?
1045:
1046: sub htmlareabrowser {
1047: return 1;
1048: }
1049:
1050: ############################################################
1051: ############################################################
1052:
1053: =pod
1054:
1055: =item breadcrumbs
1056:
1057: Compiles the previously registered breadcrumbs into an series of links.
1058: FAQ and BUG links will be placed on the left side of the table if they
1059: are defined for the last registered breadcrumb.
1060: Additionally supports a 'component', which will be displayed on the
1061: right side of the table (without a link).
1062: A link to help for the component will be included if one is specified.
1063:
1064: All inputs can be undef without problems.
1065:
1066: Inputs: $color (the background color of the table returned),
1067: $component (the large text on the right side of the table),
1068: $component_help
1069: $function (role to get colors from)
1070: $domain (domian of role)
1071: $menulink (boolean, controls whether to include a link to /adm/menu)
1072:
1073: Returns a string containing breadcrumbs for the current page.
1074:
1075: =item clear_breadcrumbs
1076:
1077: Clears the previously stored breadcrumbs.
1078:
1079: =item add_breadcrumb
1080:
1081: Pushes a breadcrumb on the stack of crumbs.
1082:
1083: input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
1084: are required. If present the keys 'faq' and 'bug' will be used to provide
1085: links to the FAQ and bug sites.
1086:
1087: returns: nothing
1088:
1089: =cut
1090:
1091: ############################################################
1092: ############################################################
1093: {
1094: my @Crumbs;
1095:
1096: sub breadcrumbs {
1097: my ($color,$component,$component_help,$function,$domain,$menulink,
1098: $helplink) = @_;
1099: if (! defined($color)) {
1100: if (! defined($function)) {
1101: $function = &Apache::loncommon::get_users_function();
1102: }
1103: $color = &Apache::loncommon::designparm($function.'.tabbg',
1104: $domain);
1105: }
1106: #
1107: my $Str = "\n".
1108: '<table width="100%" border="0" cellpadding="0" cellspacing="0">'.
1109: '<tr><td bgcolor="'.$color.'">'.
1110: '<font size="-1">';
1111: #
1112: # Make the faq and bug data cascade
1113: my $faq = '';
1114: my $bug = '';
1115: # The last breadcrumb does not have a link, so handle it separately.
1116: my $last = pop(@Crumbs);
1117: #
1118: # The first one should be the course or a menu link
1119: if (!defined($menulink)) { $menulink=1; }
1120: if ($menulink) {
1121: my $description = 'Menu';
1122: if (exists($ENV{'request.course.id'}) &&
1123: $ENV{'request.course.id'} ne '') {
1124: $description =
1125: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1126: }
1127: unshift(@Crumbs,{
1128: href =>'/adm/menu',
1129: title =>'Go to main menu',
1130: target =>'_top',
1131: text =>$description,
1132: });
1133: }
1134: my $links .=
1135: join('->',
1136: map {
1137: $faq = $_->{'faq'} if (exists($_->{'faq'}));
1138: $bug = $_->{'bug'} if (exists($_->{'bug'}));
1139: my $result = '<a href="'.$_->{'href'}.'" ';
1140: if (defined($_->{'target'}) && $_->{'target'} ne '') {
1141: $result .= 'target="'.$_->{'target'}.'" ';
1142: }
1143: $result .='title="'.&mt($_->{'title'}).'">'.
1144: &mt($_->{'text'}).'</a>';
1145: $result;
1146: } @Crumbs
1147: );
1148: $links .= '->' if ($links ne '');
1149: $links .= '<b>'.&mt($last->{'text'}).'</b>';
1150: #
1151: my $icons = '';
1152: $faq = $last->{'faq'} if (exists($last->{'faq'}));
1153: $bug = $last->{'bug'} if (exists($last->{'bug'}));
1154: # if ($faq ne '') {
1155: # $icons .= &Apache::loncommon::help_open_faq($faq);
1156: # }
1157: # if ($bug ne '') {
1158: # $icons .= &Apache::loncommon::help_open_bug($bug);
1159: # }
1160: if ($helplink ne 'nohelp') {
1161: $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
1162: }
1163: if ($icons ne '') {
1164: $Str .= $icons.' ';
1165: }
1166: #
1167: $Str .= $links.'</font></td>';
1168: #
1169: if (defined($component)) {
1170: $Str .= '<td align="right" bgcolor="'.$color.'">'.
1171: '<font size="+1">'.&mt($component).'</font></td>';
1172: }
1173: $Str .= '</tr></table>'."\n";
1174: #
1175: # Return the @Crumbs stack to what we started with
1176: push(@Crumbs,$last);
1177: shift(@Crumbs);
1178: #
1179: return $Str;
1180: }
1181:
1182: sub clear_breadcrumbs {
1183: undef(@Crumbs);
1184: }
1185:
1186: sub add_breadcrumb {
1187: push (@Crumbs,@_);
1188: }
1189:
1190: } # End of scope for @Crumbs
1191:
1192: ############################################################
1193: ############################################################
1194:
1195:
1196: 1;
1197:
1198: __END__
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