1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.89 2004/09/10 17:58:01 banghart 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: $return.="\n<option value='$_'>".
135: &Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]).
136: '</option>';
137: }
138: }
139: $return.="\n</select>\n";
140: return $return;
141: }
142:
143:
144: =pod
145:
146: =item textbox
147:
148: =cut
149:
150: ##############################################
151: ##############################################
152: sub textbox {
153: my ($name,$value,$size,$special) = @_;
154: $size = 40 if (! defined($size));
155: my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
156: 'value="'.$value.'" '.$special.' />';
157: return $Str;
158: }
159:
160: ##############################################
161: ##############################################
162:
163: =pod
164:
165: =item checkbox
166:
167: =cut
168:
169: ##############################################
170: ##############################################
171: sub checkbox {
172: my ($name,$checked,$value) = @_;
173: my $Str = '<input type="checkbox" name="'.$name.'" ';
174: if (defined($value)) {
175: $Str .= 'value="'.$value.'"';
176: }
177: if ($checked) {
178: $Str .= ' checked="1"';
179: }
180: $Str .= ' />';
181: return $Str;
182: }
183:
184: ##############################################
185: ##############################################
186:
187: =pod
188:
189: =item &date_setter
190:
191: &date_setter returns html and javascript for a compact date-setting form.
192: To retrieve values from it, use &get_date_from_form().
193:
194: Inputs
195:
196: =over 4
197:
198: =item $dname
199:
200: The name to prepend to the form elements.
201: The form elements defined will be dname_year, dname_month, dname_day,
202: dname_hour, dname_min, and dname_sec.
203:
204: =item $currentvalue
205:
206: The current setting for this time parameter. A unix format time
207: (time in seconds since the beginning of Jan 1st, 1970, GMT.
208: An undefined value is taken to indicate the value is the current time.
209: Also, to be explicit, a value of 'now' also indicates the current time.
210:
211: =item $special
212:
213: Additional html/javascript to be associated with each element in
214: the date_setter. See lonparmset for example usage.
215:
216: =item $includeempty
217:
218: =item $state
219:
220: Specifies the initial state of the form elements. Either 'disabled' or empty.
221: Defaults to empty, which indiciates the form elements are not disabled.
222:
223: =back
224:
225: Bugs
226:
227: The method used to restrict user input will fail in the year 2400.
228:
229: =cut
230:
231: ##############################################
232: ##############################################
233: sub date_setter {
234: my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
235: $no_hh_mm_ss) = @_;
236: if (! defined($state) || $state ne 'disabled') {
237: $state = '';
238: }
239: if (! defined($no_hh_mm_ss)) {
240: $no_hh_mm_ss = 0;
241: }
242: if (! defined($currentvalue) || $currentvalue eq 'now') {
243: unless ($includeempty) {
244: $currentvalue = time;
245: } else {
246: $currentvalue = 0;
247: }
248: }
249: # other potentially useful values: wkday,yrday,is_daylight_savings
250: my ($sec,$min,$hour,$mday,$month,$year)=('','',undef,'','','');
251: if ($currentvalue) {
252: ($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) =
253: localtime($currentvalue);
254: $year += 1900;
255: }
256: my $result = "\n<!-- $dname date setting form -->\n";
257: $result .= <<ENDJS;
258: <script language="Javascript">
259: function $dname\_checkday() {
260: var day = document.$formname.$dname\_day.value;
261: var month = document.$formname.$dname\_month.value;
262: var year = document.$formname.$dname\_year.value;
263: var valid = true;
264: if (day < 1) {
265: document.$formname.$dname\_day.value = 1;
266: }
267: if (day > 31) {
268: document.$formname.$dname\_day.value = 31;
269: }
270: if ((month == 1) || (month == 3) || (month == 5) ||
271: (month == 7) || (month == 8) || (month == 10) ||
272: (month == 12)) {
273: if (day > 31) {
274: document.$formname.$dname\_day.value = 31;
275: day = 31;
276: }
277: } else if (month == 2 ) {
278: if ((year % 4 == 0) && (year % 100 != 0)) {
279: if (day > 29) {
280: document.$formname.$dname\_day.value = 29;
281: }
282: } else if (day > 29) {
283: document.$formname.$dname\_day.value = 28;
284: }
285: } else if (day > 30) {
286: document.$formname.$dname\_day.value = 30;
287: }
288: }
289:
290: function $dname\_disable() {
291: document.$formname.$dname\_month.disabled=true;
292: document.$formname.$dname\_day.disabled=true;
293: document.$formname.$dname\_year.disabled=true;
294: document.$formname.$dname\_hour.disabled=true;
295: document.$formname.$dname\_minute.disabled=true;
296: document.$formname.$dname\_second.disabled=true;
297: }
298:
299: function $dname\_enable() {
300: document.$formname.$dname\_month.disabled=false;
301: document.$formname.$dname\_day.disabled=false;
302: document.$formname.$dname\_year.disabled=false;
303: document.$formname.$dname\_hour.disabled=false;
304: document.$formname.$dname\_minute.disabled=false;
305: document.$formname.$dname\_second.disabled=false;
306: }
307:
308: function $dname\_opencalendar() {
309: if (! document.$formname.$dname\_month.disabled) {
310: var calwin=window.open(
311: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
312: document.$formname.$dname\_month.value+"&year="+
313: document.$formname.$dname\_year.value,
314: "LONCAPAcal",
315: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
316: }
317:
318: }
319: </script>
320: ENDJS
321: $result .= " <nobr><select name=\"$dname\_month\" ".$special.' '.
322: $state.' '.
323: "onChange=\"javascript:$dname\_checkday()\" >\n";
324: # Month
325: my @Months = qw/January February March April May June
326: July August September October November December/;
327: # Pad @Months with a bogus value to make indexing easier
328: unshift(@Months,'If you can read this an error occurred');
329: if ($includeempty) { $result.="<option value=''></option>"; }
330: for(my $m = 1;$m <=$#Months;$m++) {
331: $result .= " <option value=\"$m\" ";
332: $result .= "selected " if ($m-1 eq $month);
333: $result .= "> ".&mt($Months[$m])." </option>\n";
334: }
335: $result .= " </select>\n";
336: # Day
337: $result .= " <input type=\"text\" name=\"$dname\_day\" ".$state.' '.
338: "value=\"$mday\" size=\"3\" ".$special.' '.
339: "onChange=\"javascript:$dname\_checkday()\" />\n";
340: # Year
341: $result .= " <input type=\"year\" name=\"$dname\_year\" ".$state.' '.
342: "value=\"$year\" size=\"5\" ".$special.' '.
343: "onChange=\"javascript:$dname\_checkday()\" />\n";
344: $result .= " ";
345: if (! $no_hh_mm_ss) {
346: # Hours
347: $result .= " <select name=\"$dname\_hour\" ".$special." ".$state.' '.
348: ">\n";
349: if ($includeempty) { $result.="<option value=''></option>"; }
350: for (my $h = 0;$h<24;$h++) {
351: $result .= " <option value=\"$h\" ";
352: $result .= "selected " if (defined($hour) && $hour == $h);
353: $result .= "> ";
354: my $timest='';
355: if ($h == 0) {
356: $timest .= "12 am";
357: } elsif($h == 12) {
358: $timest .= "12 noon";
359: } elsif($h < 12) {
360: $timest .= "$h am";
361: } else {
362: $timest .= $h-12 ." pm";
363: }
364: $timest=&mt($timest);
365: $result .= $timest." </option>\n";
366: }
367: $result .= " </select>\n";
368: $result .= " <input type=\"text\" name=\"$dname\_minute\" ".
369: $special.' '.
370: $state.' '.
371: "value=\"$min\" size=\"3\" /> m\n";
372: $result .= " <input type=\"text\" name=\"$dname\_second\" ".
373: $special.' '.
374: $state.' '.
375: "value=\"$sec\" size=\"3\" /> s\n";
376: }
377: $result .= "<a href=\"javascript:$dname\_opencalendar()\">".
378: &mt('Select Date')."</a></nobr>\n<!-- end $dname date setting form -->\n";
379: return $result;
380: }
381:
382: ##############################################
383: ##############################################
384:
385: =pod
386:
387: =item &get_date_from_form
388:
389: get_date_from_form retrieves the date specified in an &date_setter form.
390:
391: Inputs:
392:
393: =over 4
394:
395: =item $dname
396:
397: The name passed to &datesetter, which prefixes the form elements.
398:
399: =item $defaulttime
400:
401: The unix time to use as the default in case of poor inputs.
402:
403: =back
404:
405: Returns: Unix time represented in the form.
406:
407: =cut
408:
409: ##############################################
410: ##############################################
411: sub get_date_from_form {
412: my ($dname) = @_;
413: my ($sec,$min,$hour,$day,$month,$year);
414: #
415: if (defined($ENV{'form.'.$dname.'_second'})) {
416: my $tmpsec = $ENV{'form.'.$dname.'_second'};
417: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
418: $sec = $tmpsec;
419: }
420: if (!defined($tmpsec) || $tmpsec eq '') { $sec = 0; }
421: } else {
422: $sec = 0;
423: }
424: if (defined($ENV{'form.'.$dname.'_minute'})) {
425: my $tmpmin = $ENV{'form.'.$dname.'_minute'};
426: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
427: $min = $tmpmin;
428: }
429: if (!defined($tmpmin) || $tmpmin eq '') { $min = 0; }
430: } else {
431: $min = 0;
432: }
433: if (defined($ENV{'form.'.$dname.'_hour'})) {
434: my $tmphour = $ENV{'form.'.$dname.'_hour'};
435: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
436: $hour = $tmphour;
437: }
438: } else {
439: $hour = 0;
440: }
441: if (defined($ENV{'form.'.$dname.'_day'})) {
442: my $tmpday = $ENV{'form.'.$dname.'_day'};
443: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
444: $day = $tmpday;
445: }
446: }
447: if (defined($ENV{'form.'.$dname.'_month'})) {
448: my $tmpmonth = $ENV{'form.'.$dname.'_month'};
449: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
450: $month = $tmpmonth - 1;
451: }
452: }
453: if (defined($ENV{'form.'.$dname.'_year'})) {
454: my $tmpyear = $ENV{'form.'.$dname.'_year'};
455: if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
456: $year = $tmpyear - 1900;
457: }
458: }
459: if (($year<70) || ($year>137)) { return undef; }
460: if (defined($sec) && defined($min) && defined($hour) &&
461: defined($day) && defined($month) && defined($year) &&
462: eval(&timelocal($sec,$min,$hour,$day,$month,$year))) {
463: return &timelocal($sec,$min,$hour,$day,$month,$year);
464: } else {
465: return undef;
466: }
467: }
468:
469: ##############################################
470: ##############################################
471:
472: =pod
473:
474: =item &pjump_javascript_definition()
475:
476: Returns javascript defining the 'pjump' function, which opens up a
477: parameter setting wizard.
478:
479: =cut
480:
481: ##############################################
482: ##############################################
483: sub pjump_javascript_definition {
484: my $Str = <<END;
485: function pjump(type,dis,value,marker,ret,call) {
486: parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
487: +"&value="+escape(value)+"&marker="+escape(marker)
488: +"&return="+escape(ret)
489: +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
490: "height=350,width=350,scrollbars=no,menubar=no");
491: }
492: END
493: return $Str;
494: }
495:
496: ##############################################
497: ##############################################
498:
499: =pod
500:
501: =item &javascript_nothing()
502:
503: Return an appropriate null for the users browser. This is used
504: as the first arguement for window.open calls when you want a blank
505: window that you can then write to.
506:
507: =cut
508:
509: ##############################################
510: ##############################################
511: sub javascript_nothing {
512: # mozilla and other browsers work with "''", but IE on mac does not.
513: my $nothing = "''";
514: my $user_browser;
515: my $user_os;
516: $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
517: $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
518: if (! defined($user_browser) || ! defined($user_os)) {
519: (undef,$user_browser,undef,undef,undef,$user_os) =
520: &Apache::loncommon::decode_user_agent();
521: }
522: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
523: $nothing = "'javascript:void(0);'";
524: }
525: return $nothing;
526: }
527:
528:
529: ##############################################
530: ##############################################
531:
532: =pod
533:
534: =item &StatusOptions()
535:
536: Returns html for a selection box which allows the user to choose the
537: enrollment status of students. The selection box name is 'Status'.
538:
539: Inputs:
540:
541: $status: the currently selected status. If undefined the value of
542: $ENV{'form.Status'} is taken. If that is undefined, a value of 'Active'
543: is used.
544:
545: $formname: The name of the form. If defined the onchange attribute of
546: the selection box is set to document.$formname.submit().
547:
548: $size: the size (number of lines) of the selection box.
549:
550: $onchange: javascript to use when the value is changed. Enclosed in
551: double quotes, ""s, not single quotes.
552:
553: Returns: a perl string as described.
554:
555: =cut
556:
557: ##############################################
558: ##############################################
559: sub StatusOptions {
560: my ($status, $formName,$size,$onchange)=@_;
561: $size = 1 if (!defined($size));
562: if (! defined($status)) {
563: $status = 'Active';
564: $status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
565: }
566:
567: my $OpSel1 = '';
568: my $OpSel2 = '';
569: my $OpSel3 = '';
570:
571: if($status eq 'Any') { $OpSel3 = ' selected'; }
572: elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; }
573: else { $OpSel1 = ' selected'; }
574:
575: my $Str = '';
576: $Str .= '<select name="Status"';
577: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
578: $Str .= ' onchange="document.'.$formName.'.submit()"';
579: }
580: if (defined($onchange)) {
581: $Str .= ' onchange="'.$onchange.'"';
582: }
583: $Str .= ' size="'.$size.'" ';
584: $Str .= '>'."\n";
585: $Str .= '<option value="Active" '.$OpSel1.'>'.
586: &mt('Currently Enrolled').'</option>'."\n";
587: $Str .= '<option value="Expired" '.$OpSel2.'>'.
588: &mt('Previously Enrolled').'</option>'."\n";
589: $Str .= '<option value="Any" '.$OpSel3.'>'.
590: &mt('Any Enrollment Status').'</option>'."\n";
591: $Str .= '</select>'."\n";
592: }
593:
594: ########################################################
595: ########################################################
596:
597: =pod
598:
599: =item Progess Window Handling Routines
600:
601: These routines handle the creation, update, increment, and closure of
602: progress windows. The progress window reports to the user the number
603: of items completed and an estimate of the time required to complete the rest.
604:
605: =over 4
606:
607:
608: =item &Create_PrgWin
609:
610: Writes javascript to the client to open a progress window and returns a
611: data structure used for bookkeeping.
612:
613: Inputs
614:
615: =over 4
616:
617: =item $r Apache request
618:
619: =item $title The title of the progress window
620:
621: =item $heading A description (usually 1 line) of the process being initiated.
622:
623: =item $number_to_do The total number of items being processed.
624:
625: =item $type Either 'popup' or 'inline' (popup is assumed if nothing is
626: specified)
627:
628: =item $width Specify the width in charaters of the input field.
629:
630: =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
631:
632: =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
633:
634: =back
635:
636: Returns a hash containing the progress state data structure.
637:
638:
639: =item &Update_PrgWin
640:
641: Updates the text in the progress indicator. Does not increment the count.
642: See &Increment_PrgWin.
643:
644: Inputs:
645:
646: =over 4
647:
648: =item $r Apache request
649:
650: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
651:
652: =item $displaystring The string to write to the status indicator
653:
654: =back
655:
656: Returns: none
657:
658:
659: =item Increment_PrgWin
660:
661: Increment the count of items completed for the progress window by 1.
662:
663: Inputs:
664:
665: =over 4
666:
667: =item $r Apache request
668:
669: =item $prog_state Pointer to the data structure returned by Create_PrgWin
670:
671: =item $extraInfo A description of the items being iterated over. Typically
672: 'student'.
673:
674: =back
675:
676: Returns: none
677:
678:
679: =item Close_PrgWin
680:
681: Closes the progress window.
682:
683: Inputs:
684:
685: =over 4
686:
687: =item $r Apache request
688:
689: =item $prog_state Pointer to the data structure returned by Create_PrgWin
690:
691: =back
692:
693: Returns: none
694:
695: =back
696:
697: =cut
698:
699: ########################################################
700: ########################################################
701:
702: my $uniq=0;
703: sub get_uniq_name {
704: $uniq++;
705: return 'uniquename'.$uniq;
706: }
707:
708: # Create progress
709: sub Create_PrgWin {
710: my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
711: $inputname)=@_;
712: if (!defined($type)) { $type='popup'; }
713: if (!defined($width)) { $width=55; }
714: my %prog_state;
715: $prog_state{'type'}=$type;
716: if ($type eq 'popup') {
717: $prog_state{'window'}='popwin';
718: #the whole function called through timeout is due to issues
719: #in mozilla Read BUG #2665 if you want to know the whole story
720: &r_print($r,'<script>'.
721: "var popwin;
722: function openpopwin () {
723: popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
724: "popwin.document.writeln(\'<html><head><title>$title</title></head>".
725: "<body bgcolor=\"#88DDFF\">".
726: "<h4>$heading</h4>".
727: "<form name=popremain>".
728: '<input type="text" size="'.$width.'" name="remaining" value="'.
729: &mt('Starting').'"></form>'.
730: "</body></html>\');".
731: "popwin.document.close();}".
732: "\nwindow.setTimeout(openpopwin,0)</script>");
733: $prog_state{'formname'}='popremain';
734: $prog_state{'inputname'}="remaining";
735: } elsif ($type eq 'inline') {
736: $prog_state{'window'}='window';
737: if (!$formname) {
738: $prog_state{'formname'}=&get_uniq_name();
739: &r_print($r,'<form name="'.$prog_state{'formname'}.'">');
740: } else {
741: $prog_state{'formname'}=$formname;
742: }
743: if (!$inputname) {
744: $prog_state{'inputname'}=&get_uniq_name();
745: &r_print($r,$heading.' <input type="text" name="'.$prog_state{'inputname'}.
746: '" size="'.$width.'" />');
747: } else {
748: $prog_state{'inputname'}=$inputname;
749:
750: }
751: if (!$formname) { &r_print($r,'</form>'); }
752: &Update_PrgWin($r,\%prog_state,&mt('Starting'));
753: }
754:
755: $prog_state{'done'}=0;
756: $prog_state{'firststart'}=&Time::HiRes::time();
757: $prog_state{'laststart'}=&Time::HiRes::time();
758: $prog_state{'max'}=$number_to_do;
759:
760: return %prog_state;
761: }
762:
763: # update progress
764: sub Update_PrgWin {
765: my ($r,$prog_state,$displayString)=@_;
766: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
767: $$prog_state{'formname'}.'.'.
768: $$prog_state{'inputname'}.'.value="'.
769: $displayString.'";</script>');
770: $$prog_state{'laststart'}=&Time::HiRes::time();
771: }
772:
773: # increment progress state
774: sub Increment_PrgWin {
775: my ($r,$prog_state,$extraInfo)=@_;
776: $$prog_state{'done'}++;
777: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
778: $$prog_state{'done'} *
779: ($$prog_state{'max'}-$$prog_state{'done'});
780: $time_est = int($time_est);
781: #
782: my $min = int($time_est/60);
783: my $sec = $time_est % 60;
784: #
785: my $str;
786: if ($min == 1 && $sec > 1) {
787: $str = '[_2] seconds';
788: } elsif ($min == 1 && $sec < 2) {
789: $str = '1 minute';
790: } elsif ($min < 10 && $sec > 1) {
791: $str = '[_1] minutes, [_2] seconds';
792: } elsif ($min >= 10 || $sec < 2) {
793: $str = '[_1] minutes';
794: }
795: $time_est = &mt($str,$min,$sec);
796: #
797: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
798: if ($lasttime > 9) {
799: $lasttime = int($lasttime);
800: } elsif ($lasttime < 0.01) {
801: $lasttime = 0;
802: } else {
803: $lasttime = sprintf("%3.2f",$lasttime);
804: }
805: if ($lasttime == 1) {
806: $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
807: } else {
808: $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
809: }
810: #
811: my $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
812: my $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
813: if (! defined($user_browser) || ! defined($user_os)) {
814: (undef,$user_browser,undef,undef,undef,$user_os) =
815: &Apache::loncommon::decode_user_agent();
816: }
817: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
818: $lasttime = '';
819: }
820: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
821: $$prog_state{'formname'}.'.'.
822: $$prog_state{'inputname'}.'.value="'.
823: $$prog_state{'done'}.'/'.$$prog_state{'max'}.
824: ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
825: $$prog_state{'laststart'}=&Time::HiRes::time();
826: }
827:
828: # close Progress Line
829: sub Close_PrgWin {
830: my ($r,$prog_state)=@_;
831: if ($$prog_state{'type'} eq 'popup') {
832: &r_print($r,'<script>popwin.close()</script>'."\n");
833: } elsif ($$prog_state{'type'} eq 'inline') {
834: &Update_PrgWin($r,$prog_state,&mt('Done'));
835: }
836: undef(%$prog_state);
837: }
838:
839: sub r_print {
840: my ($r,$to_print)=@_;
841: if ($r) {
842: $r->print($to_print);
843: $r->rflush();
844: } else {
845: print($to_print);
846: }
847: }
848:
849: # ------------------------------------------------------- Puts directory header
850:
851: sub crumbs {
852: my ($uri,$target,$prefix,$form,$size,$noformat)=@_;
853: if (! defined($size)) {
854: $size = '+2';
855: }
856: my $output='';
857: unless ($noformat) { $output.='<br /><tt><b>'; }
858: $output.='<font size="'.$size.'">'.$prefix.'/';
859: if ($ENV{'user.adv'}) {
860: my $path=$prefix.'/';
861: foreach (split('/',$uri)) {
862: unless ($_) { next; }
863: $path.=$_;
864: unless ($path eq $uri) { $path.='/'; }
865: my $linkpath=$path;
866: if ($form) {
867: $linkpath="javascript:$form.action='$path';$form.submit();";
868: }
869: $output.='<a href="'.$linkpath.'"'.($target?' target="'.$target.'"':'').'>'.$_.'</a>/';
870: }
871: } else {
872: $output.=$uri;
873: }
874: unless ($uri=~/\/$/) { $output=~s/\/$//; }
875: return $output.'</font>'.($noformat?'':'</b></tt><br />');
876: }
877:
878: # --------------------- A function that generates a window for the spellchecker
879:
880: sub spellheader {
881: my $nothing = &javascript_nothing();
882: return (<<ENDCHECK);
883: <script type="text/javascript">
884: // BEGIN LON-CAPA Internal
885: var checkwin;
886:
887: function spellcheckerwindow() {
888: checkwin=window.open($nothing,'spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
889: checkwin.document.writeln('<html><body bgcolor="#DDDDDD"><form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="" /></form></body></html>');
890: checkwin.document.close();
891: }
892: // END LON-CAPA Internal
893: </script>
894: ENDCHECK
895: }
896:
897: # ---------------------------------- Generate link to spell checker for a field
898:
899: sub spelllink {
900: my ($form,$field)=@_;
901: my $linktext=&mt('Check Spelling');
902: return (<<ENDLINK);
903: <a href="javascript:if (typeof(document.$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>
904: ENDLINK
905: }
906:
907: # ------------------------------------------------- Output headers for HTMLArea
908:
909: sub htmlareaheaders {
910: if (&htmlareablocked()) { return ''; }
911: unless (&htmlareabrowser()) { return ''; }
912: my $lang='en';
913: if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
914: $lang=&mt('htmlarea_lang');
915: }
916: return (<<ENDHEADERS);
917: <script type="text/javascript">
918: _editor_url='/htmlarea/';
919: _editor_lang='$lang';
920: </script>
921: <script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
922: ENDHEADERS
923: }
924:
925: # ------------------------------------------------- Activate additional buttons
926:
927: sub htmlareaaddbuttons {
928: if (&htmlareablocked()) { return ''; }
929: unless (&htmlareabrowser()) { return ''; }
930: return (<<ENDADDBUTTON);
931: var config=new HTMLArea.Config();
932: config.registerButton('ed_math','LaTeX Inline',
933: '/htmlarea/images/ed_math.gif',false,
934: function(editor,id) {
935: editor.surroundHTML(' <m>\$','\$</m> ');
936: }
937: );
938: config.registerButton('ed_math_eqn','LaTeX Equation',
939: '/htmlarea/images/ed_math_eqn.gif',false,
940: function(editor,id) {
941: editor.surroundHTML(
942: ' \\n<center><m>\\\\[','\\\\]</m></center>\\n ');
943: }
944: );
945: config.toolbar.push(['ed_math','ed_math_eqn']);
946: ENDADDBUTTON
947: }
948:
949: # ----------------------------------------------------------------- Preferences
950:
951: sub disablelink {
952: my @fields=@_;
953: if (defined($#fields)) {
954: unless ($#fields>=0) { return ''; }
955: }
956: return '<a href="/adm/preferences?action=set_wysiwyg&wysiwyg=off&returnurl='.&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Disable WYSIWYG Editor').'</a>';
957: }
958:
959: sub enablelink {
960: my @fields=@_;
961: if (defined($#fields)) {
962: unless ($#fields>=0) { return ''; }
963: }
964: return '<a href="/adm/preferences?action=set_wysiwyg&wysiwyg=on&returnurl='.&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Enable WYSIWYG Editor').'</a>';
965: }
966:
967: # ----------------------------------------- Script to activate only some fields
968:
969: sub htmlareaselectactive {
970: my @fields=@_;
971: unless (&htmlareabrowser()) { return ''; }
972: if (&htmlareablocked()) { return '<br />'.&enablelink(@fields); }
973: my $output='<script type="text/javascript" defer="1">'.
974: &htmlareaaddbuttons();
975: foreach(@fields) {
976: $output.="\nHTMLArea.replace('$_',config);";
977: }
978: $output.="\nwindow.status='Activated Editfields';\n</script><br />".
979: &disablelink(@fields);
980: return $output;
981: }
982:
983: # --------------------------------------------------------------------- Blocked
984:
985: sub htmlareablocked {
986: unless ($ENV{'environment.wysiwygeditor'} eq 'on') { return 1; }
987: return 0;
988: }
989:
990: # ---------------------------------------- Browser capable of running HTMLArea?
991:
992: sub htmlareabrowser {
993: return 1;
994: }
995:
996: ############################################################
997: ############################################################
998:
999: =pod
1000:
1001: =item breadcrumbs
1002:
1003: Compiles the previously registered breadcrumbs into an series of links.
1004: FAQ and BUG links will be placed on the left side of the table if they
1005: are defined for the last registered breadcrumb.
1006: Additionally supports a 'component', which will be displayed on the
1007: right side of the table (without a link).
1008: A link to help for the component will be included if one is specified.
1009:
1010: All inputs can be undef without problems.
1011:
1012: Inputs: $color (the background color of the table returned),
1013: $component (the large text on the right side of the table),
1014: $component_help
1015: $function (role to get colors from)
1016: $domain (domian of role)
1017: $menulink (boolean, controls whether to include a link to /adm/menu)
1018:
1019: Returns a string containing breadcrumbs for the current page.
1020:
1021: =item clear_breadcrumbs
1022:
1023: Clears the previously stored breadcrumbs.
1024:
1025: =item add_breadcrumb
1026:
1027: Pushes a breadcrumb on the stack of crumbs.
1028:
1029: input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
1030: are required. If present the keys 'faq' and 'bug' will be used to provide
1031: links to the FAQ and bug sites.
1032:
1033: returns: nothing
1034:
1035: =cut
1036:
1037: ############################################################
1038: ############################################################
1039: {
1040: my @Crumbs;
1041:
1042: sub breadcrumbs {
1043: my ($color,$component,$component_help,$function,$domain,$menulink,
1044: $helplink) = @_;
1045: if (! defined($color)) {
1046: if (! defined($function)) {
1047: $function = &Apache::loncommon::get_users_function();
1048: }
1049: $color = &Apache::loncommon::designparm($function.'.tabbg',
1050: $domain);
1051: }
1052: #
1053: my $Str = "\n".
1054: '<table width="100%" border="0" cellpadding="0" cellspacing="0">'.
1055: '<tr><td bgcolor="'.$color.'">'.
1056: '<font size="-1">';
1057: #
1058: # Make the faq and bug data cascade
1059: my $faq = '';
1060: my $bug = '';
1061: # The last breadcrumb does not have a link, so handle it separately.
1062: my $last = pop(@Crumbs);
1063: #
1064: # The first one should be the course or a menu link
1065: if (!defined($menulink)) { $menulink=1; }
1066: if ($menulink) {
1067: my $description = 'Menu';
1068: if (exists($ENV{'request.course.id'}) &&
1069: $ENV{'request.course.id'} ne '') {
1070: $description =
1071: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1072: }
1073: unshift(@Crumbs,{
1074: href =>'/adm/menu',
1075: title =>'Go to main menu',
1076: target =>'_top',
1077: text =>$description,
1078: });
1079: }
1080: my $links .=
1081: join('->',
1082: map {
1083: $faq = $_->{'faq'} if (exists($_->{'faq'}));
1084: $bug = $_->{'bug'} if (exists($_->{'bug'}));
1085: my $result = '<a href="'.$_->{'href'}.'" ';
1086: if (defined($_->{'target'}) && $_->{'target'} ne '') {
1087: $result .= 'target="'.$_->{'target'}.'" ';
1088: }
1089: $result .='title="'.&mt($_->{'title'}).'">'.
1090: &mt($_->{'text'}).'</a>';
1091: $result;
1092: } @Crumbs
1093: );
1094: $links .= '->' if ($links ne '');
1095: $links .= '<b>'.&mt($last->{'text'}).'</b>';
1096: #
1097: my $icons = '';
1098: $faq = $last->{'faq'} if (exists($last->{'faq'}));
1099: $bug = $last->{'bug'} if (exists($last->{'bug'}));
1100: # if ($faq ne '') {
1101: # $icons .= &Apache::loncommon::help_open_faq($faq);
1102: # }
1103: # if ($bug ne '') {
1104: # $icons .= &Apache::loncommon::help_open_bug($bug);
1105: # }
1106: if ($helplink ne 'nohelp') {
1107: $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
1108: }
1109: if ($icons ne '') {
1110: $Str .= $icons.' ';
1111: }
1112: #
1113: $Str .= $links.'</font></td>';
1114: #
1115: if (defined($component)) {
1116: $Str .= '<td align="right" bgcolor="'.$color.'">'.
1117: '<font size="+1">'.&mt($component).'</font></td>';
1118: }
1119: $Str .= '</tr></table>'."\n";
1120: #
1121: # Return the @Crumbs stack to what we started with
1122: push(@Crumbs,$last);
1123: shift(@Crumbs);
1124: #
1125: return $Str;
1126: }
1127:
1128: sub clear_breadcrumbs {
1129: undef(@Crumbs);
1130: }
1131:
1132: sub add_breadcrumb {
1133: push (@Crumbs,@_);
1134: }
1135:
1136: } # End of scope for @Crumbs
1137:
1138: ############################################################
1139: ############################################################
1140:
1141:
1142: 1;
1143:
1144: __END__
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