1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.94 2004/10/21 11:18:06 foxr Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ######################################################################
29: ######################################################################
30:
31: =pod
32:
33: =head1 NAME
34:
35: Apache::lonhtmlcommon - routines to do common html things
36:
37: =head1 SYNOPSIS
38:
39: Referenced by other mod_perl Apache modules.
40:
41: =head1 INTRODUCTION
42:
43: lonhtmlcommon is a collection of subroutines used to present information
44: in a consistent html format, or provide other functionality related to
45: html.
46:
47: =head2 General Subroutines
48:
49: =over 4
50:
51: =cut
52:
53: ######################################################################
54: ######################################################################
55:
56: package Apache::lonhtmlcommon;
57:
58: use 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: $return.="\n<option value='$escaped'>".
136: &Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]).
137: '</option>';
138: }
139: }
140: $return.="\n</select>\n";
141: return $return;
142: }
143:
144:
145: =pod
146:
147: =item textbox
148:
149: =cut
150:
151: ##############################################
152: ##############################################
153: sub textbox {
154: my ($name,$value,$size,$special) = @_;
155: $size = 40 if (! defined($size));
156: my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
157: 'value="'.$value.'" '.$special.' />';
158: return $Str;
159: }
160:
161: ##############################################
162: ##############################################
163:
164: =pod
165:
166: =item checkbox
167:
168: =cut
169:
170: ##############################################
171: ##############################################
172: sub checkbox {
173: my ($name,$checked,$value) = @_;
174: my $Str = '<input type="checkbox" name="'.$name.'" ';
175: if (defined($value)) {
176: $Str .= 'value="'.$value.'"';
177: }
178: if ($checked) {
179: $Str .= ' checked="1"';
180: }
181: $Str .= ' />';
182: return $Str;
183: }
184:
185: ##############################################
186: ##############################################
187:
188: =pod
189:
190: =item &date_setter
191:
192: &date_setter returns html and javascript for a compact date-setting form.
193: To retrieve values from it, use &get_date_from_form().
194:
195: Inputs
196:
197: =over 4
198:
199: =item $dname
200:
201: The name to prepend to the form elements.
202: The form elements defined will be dname_year, dname_month, dname_day,
203: dname_hour, dname_min, and dname_sec.
204:
205: =item $currentvalue
206:
207: The current setting for this time parameter. A unix format time
208: (time in seconds since the beginning of Jan 1st, 1970, GMT.
209: An undefined value is taken to indicate the value is the current time.
210: Also, to be explicit, a value of 'now' also indicates the current time.
211:
212: =item $special
213:
214: Additional html/javascript to be associated with each element in
215: the date_setter. See lonparmset for example usage.
216:
217: =item $includeempty
218:
219: =item $state
220:
221: Specifies the initial state of the form elements. Either 'disabled' or empty.
222: Defaults to empty, which indiciates the form elements are not disabled.
223:
224: =back
225:
226: Bugs
227:
228: The method used to restrict user input will fail in the year 2400.
229:
230: =cut
231:
232: ##############################################
233: ##############################################
234: sub date_setter {
235: my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
236: $no_hh_mm_ss) = @_;
237: if (! defined($state) || $state ne 'disabled') {
238: $state = '';
239: }
240: if (! defined($no_hh_mm_ss)) {
241: $no_hh_mm_ss = 0;
242: }
243: if (! defined($currentvalue) || $currentvalue eq 'now') {
244: unless ($includeempty) {
245: $currentvalue = time;
246: } else {
247: $currentvalue = 0;
248: }
249: }
250: # other potentially useful values: wkday,yrday,is_daylight_savings
251: my ($sec,$min,$hour,$mday,$month,$year)=('','',undef,'','','');
252: if ($currentvalue) {
253: ($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) =
254: localtime($currentvalue);
255: $year += 1900;
256: }
257: my $result = "\n<!-- $dname date setting form -->\n";
258: $result .= <<ENDJS;
259: <script language="Javascript">
260: function $dname\_checkday() {
261: var day = document.$formname.$dname\_day.value;
262: var month = document.$formname.$dname\_month.value;
263: var year = document.$formname.$dname\_year.value;
264: var valid = true;
265: if (day < 1) {
266: document.$formname.$dname\_day.value = 1;
267: }
268: if (day > 31) {
269: document.$formname.$dname\_day.value = 31;
270: }
271: if ((month == 1) || (month == 3) || (month == 5) ||
272: (month == 7) || (month == 8) || (month == 10) ||
273: (month == 12)) {
274: if (day > 31) {
275: document.$formname.$dname\_day.value = 31;
276: day = 31;
277: }
278: } else if (month == 2 ) {
279: if ((year % 4 == 0) && (year % 100 != 0)) {
280: if (day > 29) {
281: document.$formname.$dname\_day.value = 29;
282: }
283: } else if (day > 29) {
284: document.$formname.$dname\_day.value = 28;
285: }
286: } else if (day > 30) {
287: document.$formname.$dname\_day.value = 30;
288: }
289: }
290:
291: function $dname\_disable() {
292: document.$formname.$dname\_month.disabled=true;
293: document.$formname.$dname\_day.disabled=true;
294: document.$formname.$dname\_year.disabled=true;
295: document.$formname.$dname\_hour.disabled=true;
296: document.$formname.$dname\_minute.disabled=true;
297: document.$formname.$dname\_second.disabled=true;
298: }
299:
300: function $dname\_enable() {
301: document.$formname.$dname\_month.disabled=false;
302: document.$formname.$dname\_day.disabled=false;
303: document.$formname.$dname\_year.disabled=false;
304: document.$formname.$dname\_hour.disabled=false;
305: document.$formname.$dname\_minute.disabled=false;
306: document.$formname.$dname\_second.disabled=false;
307: }
308:
309: function $dname\_opencalendar() {
310: if (! document.$formname.$dname\_month.disabled) {
311: var calwin=window.open(
312: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
313: document.$formname.$dname\_month.value+"&year="+
314: document.$formname.$dname\_year.value,
315: "LONCAPAcal",
316: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
317: }
318:
319: }
320: </script>
321: ENDJS
322: $result .= " <nobr><select name=\"$dname\_month\" ".$special.' '.
323: $state.' '.
324: "onChange=\"javascript:$dname\_checkday()\" >\n";
325: # Month
326: my @Months = qw/January February March April May June
327: July August September October November December/;
328: # Pad @Months with a bogus value to make indexing easier
329: unshift(@Months,'If you can read this an error occurred');
330: if ($includeempty) { $result.="<option value=''></option>"; }
331: for(my $m = 1;$m <=$#Months;$m++) {
332: $result .= " <option value=\"$m\" ";
333: $result .= "selected " if ($m-1 eq $month);
334: $result .= "> ".&mt($Months[$m])." </option>\n";
335: }
336: $result .= " </select>\n";
337: # Day
338: $result .= " <input type=\"text\" name=\"$dname\_day\" ".$state.' '.
339: "value=\"$mday\" size=\"3\" ".$special.' '.
340: "onChange=\"javascript:$dname\_checkday()\" />\n";
341: # Year
342: $result .= " <input type=\"year\" name=\"$dname\_year\" ".$state.' '.
343: "value=\"$year\" size=\"5\" ".$special.' '.
344: "onChange=\"javascript:$dname\_checkday()\" />\n";
345: $result .= " ";
346: if (! $no_hh_mm_ss) {
347: # Hours
348: $result .= " <select name=\"$dname\_hour\" ".$special." ".$state.' '.
349: ">\n";
350: if ($includeempty) { $result.="<option value=''></option>"; }
351: for (my $h = 0;$h<24;$h++) {
352: $result .= " <option value=\"$h\" ";
353: $result .= "selected " if (defined($hour) && $hour == $h);
354: $result .= "> ";
355: my $timest='';
356: if ($h == 0) {
357: $timest .= "12 am";
358: } elsif($h == 12) {
359: $timest .= "12 noon";
360: } elsif($h < 12) {
361: $timest .= "$h am";
362: } else {
363: $timest .= $h-12 ." pm";
364: }
365: $timest=&mt($timest);
366: $result .= $timest." </option>\n";
367: }
368: $result .= " </select>\n";
369: $result .= " <input type=\"text\" name=\"$dname\_minute\" ".
370: $special.' '.
371: $state.' '.
372: "value=\"$min\" size=\"3\" /> m\n";
373: $result .= " <input type=\"text\" name=\"$dname\_second\" ".
374: $special.' '.
375: $state.' '.
376: "value=\"$sec\" size=\"3\" /> s\n";
377: }
378: $result .= "<a href=\"javascript:$dname\_opencalendar()\">".
379: &mt('Select Date')."</a></nobr>\n<!-- end $dname date setting form -->\n";
380: return $result;
381: }
382:
383: ##############################################
384: ##############################################
385:
386: =pod
387:
388: =item &get_date_from_form
389:
390: get_date_from_form retrieves the date specified in an &date_setter form.
391:
392: Inputs:
393:
394: =over 4
395:
396: =item $dname
397:
398: The name passed to &datesetter, which prefixes the form elements.
399:
400: =item $defaulttime
401:
402: The unix time to use as the default in case of poor inputs.
403:
404: =back
405:
406: Returns: Unix time represented in the form.
407:
408: =cut
409:
410: ##############################################
411: ##############################################
412: sub get_date_from_form {
413: my ($dname) = @_;
414: my ($sec,$min,$hour,$day,$month,$year);
415: #
416: if (defined($ENV{'form.'.$dname.'_second'})) {
417: my $tmpsec = $ENV{'form.'.$dname.'_second'};
418: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
419: $sec = $tmpsec;
420: }
421: if (!defined($tmpsec) || $tmpsec eq '') { $sec = 0; }
422: } else {
423: $sec = 0;
424: }
425: if (defined($ENV{'form.'.$dname.'_minute'})) {
426: my $tmpmin = $ENV{'form.'.$dname.'_minute'};
427: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
428: $min = $tmpmin;
429: }
430: if (!defined($tmpmin) || $tmpmin eq '') { $min = 0; }
431: } else {
432: $min = 0;
433: }
434: if (defined($ENV{'form.'.$dname.'_hour'})) {
435: my $tmphour = $ENV{'form.'.$dname.'_hour'};
436: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
437: $hour = $tmphour;
438: }
439: } else {
440: $hour = 0;
441: }
442: if (defined($ENV{'form.'.$dname.'_day'})) {
443: my $tmpday = $ENV{'form.'.$dname.'_day'};
444: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
445: $day = $tmpday;
446: }
447: }
448: if (defined($ENV{'form.'.$dname.'_month'})) {
449: my $tmpmonth = $ENV{'form.'.$dname.'_month'};
450: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
451: $month = $tmpmonth - 1;
452: }
453: }
454: if (defined($ENV{'form.'.$dname.'_year'})) {
455: my $tmpyear = $ENV{'form.'.$dname.'_year'};
456: if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
457: $year = $tmpyear - 1900;
458: }
459: }
460: if (($year<70) || ($year>137)) { return undef; }
461: if (defined($sec) && defined($min) && defined($hour) &&
462: defined($day) && defined($month) && defined($year) &&
463: eval(&timelocal($sec,$min,$hour,$day,$month,$year))) {
464: return &timelocal($sec,$min,$hour,$day,$month,$year);
465: } else {
466: return undef;
467: }
468: }
469:
470: ##############################################
471: ##############################################
472:
473: =pod
474:
475: =item &pjump_javascript_definition()
476:
477: Returns javascript defining the 'pjump' function, which opens up a
478: parameter setting wizard.
479:
480: =cut
481:
482: ##############################################
483: ##############################################
484: sub pjump_javascript_definition {
485: my $Str = <<END;
486: function pjump(type,dis,value,marker,ret,call) {
487: parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
488: +"&value="+escape(value)+"&marker="+escape(marker)
489: +"&return="+escape(ret)
490: +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
491: "height=350,width=350,scrollbars=no,menubar=no");
492: }
493: END
494: return $Str;
495: }
496:
497: ##############################################
498: ##############################################
499:
500: =pod
501:
502: =item &javascript_nothing()
503:
504: Return an appropriate null for the users browser. This is used
505: as the first arguement for window.open calls when you want a blank
506: window that you can then write to.
507:
508: =cut
509:
510: ##############################################
511: ##############################################
512: sub javascript_nothing {
513: # mozilla and other browsers work with "''", but IE on mac does not.
514: my $nothing = "''";
515: my $user_browser;
516: my $user_os;
517: $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
518: $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
519: if (! defined($user_browser) || ! defined($user_os)) {
520: (undef,$user_browser,undef,undef,undef,$user_os) =
521: &Apache::loncommon::decode_user_agent();
522: }
523: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
524: $nothing = "'javascript:void(0);'";
525: }
526: return $nothing;
527: }
528:
529: ##############################################
530: ##############################################
531: sub javascript_docopen {
532: # safari does not understand document.open() and loads "text/html"
533: my $nothing = "''";
534: my $user_browser;
535: my $user_os;
536: $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
537: $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
538: if (! defined($user_browser) || ! defined($user_os)) {
539: (undef,$user_browser,undef,undef,undef,$user_os) =
540: &Apache::loncommon::decode_user_agent();
541: }
542: if ($user_browser eq 'safari' && $user_os =~ 'mac') {
543: $nothing = "document.clear()";
544: } else {
545: $nothing = "document.open('text/html','replace')";
546: }
547: return $nothing;
548: }
549:
550:
551: ##############################################
552: ##############################################
553:
554: =pod
555:
556: =item &StatusOptions()
557:
558: Returns html for a selection box which allows the user to choose the
559: enrollment status of students. The selection box name is 'Status'.
560:
561: Inputs:
562:
563: $status: the currently selected status. If undefined the value of
564: $ENV{'form.Status'} is taken. If that is undefined, a value of 'Active'
565: is used.
566:
567: $formname: The name of the form. If defined the onchange attribute of
568: the selection box is set to document.$formname.submit().
569:
570: $size: the size (number of lines) of the selection box.
571:
572: $onchange: javascript to use when the value is changed. Enclosed in
573: double quotes, ""s, not single quotes.
574:
575: Returns: a perl string as described.
576:
577: =cut
578:
579: ##############################################
580: ##############################################
581: sub StatusOptions {
582: my ($status, $formName,$size,$onchange)=@_;
583: $size = 1 if (!defined($size));
584: if (! defined($status)) {
585: $status = 'Active';
586: $status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
587: }
588:
589: my $OpSel1 = '';
590: my $OpSel2 = '';
591: my $OpSel3 = '';
592:
593: if($status eq 'Any') { $OpSel3 = ' selected'; }
594: elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; }
595: else { $OpSel1 = ' selected'; }
596:
597: my $Str = '';
598: $Str .= '<select name="Status"';
599: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
600: $Str .= ' onchange="document.'.$formName.'.submit()"';
601: }
602: if (defined($onchange)) {
603: $Str .= ' onchange="'.$onchange.'"';
604: }
605: $Str .= ' size="'.$size.'" ';
606: $Str .= '>'."\n";
607: $Str .= '<option value="Active" '.$OpSel1.'>'.
608: &mt('Currently Enrolled').'</option>'."\n";
609: $Str .= '<option value="Expired" '.$OpSel2.'>'.
610: &mt('Previously Enrolled').'</option>'."\n";
611: $Str .= '<option value="Any" '.$OpSel3.'>'.
612: &mt('Any Enrollment Status').'</option>'."\n";
613: $Str .= '</select>'."\n";
614: }
615:
616: ########################################################
617: ########################################################
618:
619: =pod
620:
621: =item Progess Window Handling Routines
622:
623: These routines handle the creation, update, increment, and closure of
624: progress windows. The progress window reports to the user the number
625: of items completed and an estimate of the time required to complete the rest.
626:
627: =over 4
628:
629:
630: =item &Create_PrgWin
631:
632: Writes javascript to the client to open a progress window and returns a
633: data structure used for bookkeeping.
634:
635: Inputs
636:
637: =over 4
638:
639: =item $r Apache request
640:
641: =item $title The title of the progress window
642:
643: =item $heading A description (usually 1 line) of the process being initiated.
644:
645: =item $number_to_do The total number of items being processed.
646:
647: =item $type Either 'popup' or 'inline' (popup is assumed if nothing is
648: specified)
649:
650: =item $width Specify the width in charaters of the input field.
651:
652: =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
653:
654: =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
655:
656: =back
657:
658: Returns a hash containing the progress state data structure.
659:
660:
661: =item &Update_PrgWin
662:
663: Updates the text in the progress indicator. Does not increment the count.
664: See &Increment_PrgWin.
665:
666: Inputs:
667:
668: =over 4
669:
670: =item $r Apache request
671:
672: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
673:
674: =item $displaystring The string to write to the status indicator
675:
676: =back
677:
678: Returns: none
679:
680:
681: =item Increment_PrgWin
682:
683: Increment the count of items completed for the progress window by 1.
684:
685: Inputs:
686:
687: =over 4
688:
689: =item $r Apache request
690:
691: =item $prog_state Pointer to the data structure returned by Create_PrgWin
692:
693: =item $extraInfo A description of the items being iterated over. Typically
694: 'student'.
695:
696: =back
697:
698: Returns: none
699:
700:
701: =item Close_PrgWin
702:
703: Closes the progress window.
704:
705: Inputs:
706:
707: =over 4
708:
709: =item $r Apache request
710:
711: =item $prog_state Pointer to the data structure returned by Create_PrgWin
712:
713: =back
714:
715: Returns: none
716:
717: =back
718:
719: =cut
720:
721: ########################################################
722: ########################################################
723:
724: my $uniq=0;
725: sub get_uniq_name {
726: $uniq++;
727: return 'uniquename'.$uniq;
728: }
729:
730: # Create progress
731: sub Create_PrgWin {
732: my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
733: $inputname)=@_;
734: if (!defined($type)) { $type='popup'; }
735: if (!defined($width)) { $width=55; }
736: my %prog_state;
737: $prog_state{'type'}=$type;
738: if ($type eq 'popup') {
739: $prog_state{'window'}='popwin';
740: #the whole function called through timeout is due to issues
741: #in mozilla Read BUG #2665 if you want to know the whole story
742: &r_print($r,'<script>'.
743: "var popwin;
744: function openpopwin () {
745: popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
746: "popwin.document.writeln(\'<html><head><title>$title</title></head>".
747: "<body bgcolor=\"#88DDFF\">".
748: "<h4>$heading</h4>".
749: "<form name=popremain>".
750: '<input type="text" size="'.$width.'" name="remaining" value="'.
751: &mt('Starting').'"></form>'.
752: "</body></html>\');".
753: "popwin.document.close();}".
754: "\nwindow.setTimeout(openpopwin,0)</script>");
755: $prog_state{'formname'}='popremain';
756: $prog_state{'inputname'}="remaining";
757: } elsif ($type eq 'inline') {
758: $prog_state{'window'}='window';
759: if (!$formname) {
760: $prog_state{'formname'}=&get_uniq_name();
761: &r_print($r,'<form name="'.$prog_state{'formname'}.'">');
762: } else {
763: $prog_state{'formname'}=$formname;
764: }
765: if (!$inputname) {
766: $prog_state{'inputname'}=&get_uniq_name();
767: &r_print($r,$heading.' <input type="text" name="'.$prog_state{'inputname'}.
768: '" size="'.$width.'" />');
769: } else {
770: $prog_state{'inputname'}=$inputname;
771:
772: }
773: if (!$formname) { &r_print($r,'</form>'); }
774: &Update_PrgWin($r,\%prog_state,&mt('Starting'));
775: }
776:
777: $prog_state{'done'}=0;
778: $prog_state{'firststart'}=&Time::HiRes::time();
779: $prog_state{'laststart'}=&Time::HiRes::time();
780: $prog_state{'max'}=$number_to_do;
781:
782: return %prog_state;
783: }
784:
785: # update progress
786: sub Update_PrgWin {
787: my ($r,$prog_state,$displayString)=@_;
788: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
789: $$prog_state{'formname'}.'.'.
790: $$prog_state{'inputname'}.'.value="'.
791: $displayString.'";</script>');
792: $$prog_state{'laststart'}=&Time::HiRes::time();
793: }
794:
795: # increment progress state
796: sub Increment_PrgWin {
797: my ($r,$prog_state,$extraInfo)=@_;
798: $$prog_state{'done'}++;
799: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
800: $$prog_state{'done'} *
801: ($$prog_state{'max'}-$$prog_state{'done'});
802: $time_est = int($time_est);
803: #
804: my $min = int($time_est/60);
805: my $sec = $time_est % 60;
806: #
807: my $str;
808: if ($min == 0 && $sec > 1) {
809: $str = '[_2] seconds';
810: } elsif ($min == 1 && $sec > 1) {
811: $str = '1 minute [_2] seconds';
812: } elsif ($min == 1 && $sec < 2) {
813: $str = '1 minute';
814: } elsif ($min < 10 && $sec > 1) {
815: $str = '[_1] minutes, [_2] seconds';
816: } elsif ($min >= 10 || $sec < 2) {
817: $str = '[_1] minutes';
818: }
819: $time_est = &mt($str,$min,$sec);
820: #
821: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
822: if ($lasttime > 9) {
823: $lasttime = int($lasttime);
824: } elsif ($lasttime < 0.01) {
825: $lasttime = 0;
826: } else {
827: $lasttime = sprintf("%3.2f",$lasttime);
828: }
829: if ($lasttime == 1) {
830: $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
831: } else {
832: $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
833: }
834: #
835: my $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
836: my $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
837: if (! defined($user_browser) || ! defined($user_os)) {
838: (undef,$user_browser,undef,undef,undef,$user_os) =
839: &Apache::loncommon::decode_user_agent();
840: }
841: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
842: $lasttime = '';
843: }
844: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
845: $$prog_state{'formname'}.'.'.
846: $$prog_state{'inputname'}.'.value="'.
847: $$prog_state{'done'}.'/'.$$prog_state{'max'}.
848: ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
849: $$prog_state{'laststart'}=&Time::HiRes::time();
850: }
851:
852: # close Progress Line
853: sub Close_PrgWin {
854: my ($r,$prog_state)=@_;
855: if ($$prog_state{'type'} eq 'popup') {
856: &r_print($r,'<script>popwin.close()</script>'."\n");
857: } elsif ($$prog_state{'type'} eq 'inline') {
858: &Update_PrgWin($r,$prog_state,&mt('Done'));
859: }
860: undef(%$prog_state);
861: }
862:
863: sub r_print {
864: my ($r,$to_print)=@_;
865: if ($r) {
866: $r->print($to_print);
867: $r->rflush();
868: } else {
869: print($to_print);
870: }
871: }
872:
873: # ------------------------------------------------------- Puts directory header
874:
875: sub crumbs {
876: my ($uri,$target,$prefix,$form,$size,$noformat)=@_;
877: if (! defined($size)) {
878: $size = '+2';
879: }
880: my $output='';
881: unless ($noformat) { $output.='<br /><tt><b>'; }
882: $output.='<font size="'.$size.'">'.$prefix.'/';
883: if ($ENV{'user.adv'}) {
884: my $path=$prefix.'/';
885: foreach (split('/',$uri)) {
886: unless ($_) { next; }
887: $path.=$_;
888: unless ($path eq $uri) { $path.='/'; }
889: my $linkpath=$path;
890: if ($form) {
891: my $escaped_path = &Apache::loncommon::escape_single($path);
892: $linkpath="javascript:$form.action='$escaped_path';$form.submit();";
893: }
894: my $escaped_linkpath = &Apache::loncommon::escape_single($linkpath);
895: my $escaped_target = &Apache::loncommon::escape_single($target);
896: $output.='<a href="'.$escaped_linkpath.'"'.($target?' target="'.$escaped_target.'"':'').'>'.$_.'</a>/';
897: }
898: } else {
899: $output.=$uri;
900: }
901: unless ($uri=~/\/$/) { $output=~s/\/$//; }
902: return $output.'</font>'.($noformat?'':'</b></tt><br />');
903: }
904:
905: # --------------------- A function that generates a window for the spellchecker
906:
907: sub spellheader {
908: my $nothing = &javascript_nothing();
909: return (<<ENDCHECK);
910: <script type="text/javascript">
911: //<!-- BEGIN LON-CAPA Internal
912: var checkwin;
913:
914: function spellcheckerwindow() {
915: checkwin=window.open($nothing,'spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
916: checkwin.document.writeln('<html><body bgcolor="#DDDDDD"><form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="" /></form></body></html>');
917: checkwin.document.close();
918: }
919: // END LON-CAPA Internal -->
920: </script>
921: ENDCHECK
922: }
923:
924: # ---------------------------------- Generate link to spell checker for a field
925:
926: sub spelllink {
927: my ($form,$field)=@_;
928: my $linktext=&mt('Check Spelling');
929: return (<<ENDLINK);
930: <a href="javascript:if (typeof(document.$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>
931: ENDLINK
932: }
933:
934: # ------------------------------------------------- Output headers for HTMLArea
935:
936: sub htmlareaheaders {
937: if (&htmlareablocked()) { return ''; }
938: unless (&htmlareabrowser()) { return ''; }
939: my $lang='en';
940: if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
941: $lang=&mt('htmlarea_lang');
942: }
943: return (<<ENDHEADERS);
944: <script type="text/javascript">
945: _editor_url='/htmlarea/';
946: _editor_lang='$lang';
947: </script>
948: <script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
949: ENDHEADERS
950: }
951:
952: # ------------------------------------------------- Activate additional buttons
953:
954: sub htmlareaaddbuttons {
955: if (&htmlareablocked()) { return ''; }
956: unless (&htmlareabrowser()) { return ''; }
957: return (<<ENDADDBUTTON);
958: var config=new HTMLArea.Config();
959: config.registerButton('ed_math','LaTeX Inline',
960: '/htmlarea/images/ed_math.gif',false,
961: function(editor,id) {
962: editor.surroundHTML(' <m>\$','\$</m> ');
963: }
964: );
965: config.registerButton('ed_math_eqn','LaTeX Equation',
966: '/htmlarea/images/ed_math_eqn.gif',false,
967: function(editor,id) {
968: editor.surroundHTML(
969: ' \\n<center><m>\\\\[','\\\\]</m></center>\\n ');
970: }
971: );
972: config.toolbar.push(['ed_math','ed_math_eqn']);
973: ENDADDBUTTON
974: }
975:
976: # ----------------------------------------------------------------- Preferences
977:
978: sub disablelink {
979: my @fields=@_;
980: if (defined($#fields)) {
981: unless ($#fields>=0) { return ''; }
982: }
983: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=off&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Disable WYSIWYG Editor').'</a>';
984: }
985:
986: sub enablelink {
987: my @fields=@_;
988: if (defined($#fields)) {
989: unless ($#fields>=0) { return ''; }
990: }
991: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=on&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Enable WYSIWYG Editor').'</a>';
992: }
993:
994: # ----------------------------------------- Script to activate only some fields
995:
996: sub htmlareaselectactive {
997: my @fields=@_;
998: unless (&htmlareabrowser()) { return ''; }
999: if (&htmlareablocked()) { return '<br />'.&enablelink(@fields); }
1000: my $output='<script type="text/javascript" defer="1">'.
1001: &htmlareaaddbuttons();
1002: foreach(@fields) {
1003: $output.="\nHTMLArea.replace('$_',config);";
1004: }
1005: $output.="\nwindow.status='Activated Editfields';\n</script><br />".
1006: &disablelink(@fields);
1007: return $output;
1008: }
1009:
1010: # --------------------------------------------------------------------- Blocked
1011:
1012: sub htmlareablocked {
1013: unless ($ENV{'environment.wysiwygeditor'} eq 'on') { return 1; }
1014: return 0;
1015: }
1016:
1017: # ---------------------------------------- Browser capable of running HTMLArea?
1018:
1019: sub htmlareabrowser {
1020: return 1;
1021: }
1022:
1023: ############################################################
1024: ############################################################
1025:
1026: =pod
1027:
1028: =item breadcrumbs
1029:
1030: Compiles the previously registered breadcrumbs into an series of links.
1031: FAQ and BUG links will be placed on the left side of the table if they
1032: are defined for the last registered breadcrumb.
1033: Additionally supports a 'component', which will be displayed on the
1034: right side of the table (without a link).
1035: A link to help for the component will be included if one is specified.
1036:
1037: All inputs can be undef without problems.
1038:
1039: Inputs: $color (the background color of the table returned),
1040: $component (the large text on the right side of the table),
1041: $component_help
1042: $function (role to get colors from)
1043: $domain (domian of role)
1044: $menulink (boolean, controls whether to include a link to /adm/menu)
1045:
1046: Returns a string containing breadcrumbs for the current page.
1047:
1048: =item clear_breadcrumbs
1049:
1050: Clears the previously stored breadcrumbs.
1051:
1052: =item add_breadcrumb
1053:
1054: Pushes a breadcrumb on the stack of crumbs.
1055:
1056: input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
1057: are required. If present the keys 'faq' and 'bug' will be used to provide
1058: links to the FAQ and bug sites.
1059:
1060: returns: nothing
1061:
1062: =cut
1063:
1064: ############################################################
1065: ############################################################
1066: {
1067: my @Crumbs;
1068:
1069: sub breadcrumbs {
1070: my ($color,$component,$component_help,$function,$domain,$menulink,
1071: $helplink) = @_;
1072: if (! defined($color)) {
1073: if (! defined($function)) {
1074: $function = &Apache::loncommon::get_users_function();
1075: }
1076: $color = &Apache::loncommon::designparm($function.'.tabbg',
1077: $domain);
1078: }
1079: #
1080: my $Str = "\n".
1081: '<table width="100%" border="0" cellpadding="0" cellspacing="0">'.
1082: '<tr><td bgcolor="'.$color.'">'.
1083: '<font size="-1">';
1084: #
1085: # Make the faq and bug data cascade
1086: my $faq = '';
1087: my $bug = '';
1088: # The last breadcrumb does not have a link, so handle it separately.
1089: my $last = pop(@Crumbs);
1090: #
1091: # The first one should be the course or a menu link
1092: if (!defined($menulink)) { $menulink=1; }
1093: if ($menulink) {
1094: my $description = 'Menu';
1095: if (exists($ENV{'request.course.id'}) &&
1096: $ENV{'request.course.id'} ne '') {
1097: $description =
1098: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1099: }
1100: unshift(@Crumbs,{
1101: href =>'/adm/menu',
1102: title =>'Go to main menu',
1103: target =>'_top',
1104: text =>$description,
1105: });
1106: }
1107: my $links .=
1108: join('->',
1109: map {
1110: $faq = $_->{'faq'} if (exists($_->{'faq'}));
1111: $bug = $_->{'bug'} if (exists($_->{'bug'}));
1112: my $result = '<a href="'.$_->{'href'}.'" ';
1113: if (defined($_->{'target'}) && $_->{'target'} ne '') {
1114: $result .= 'target="'.$_->{'target'}.'" ';
1115: }
1116: $result .='title="'.&mt($_->{'title'}).'">'.
1117: &mt($_->{'text'}).'</a>';
1118: $result;
1119: } @Crumbs
1120: );
1121: $links .= '->' if ($links ne '');
1122: $links .= '<b>'.&mt($last->{'text'}).'</b>';
1123: #
1124: my $icons = '';
1125: $faq = $last->{'faq'} if (exists($last->{'faq'}));
1126: $bug = $last->{'bug'} if (exists($last->{'bug'}));
1127: # if ($faq ne '') {
1128: # $icons .= &Apache::loncommon::help_open_faq($faq);
1129: # }
1130: # if ($bug ne '') {
1131: # $icons .= &Apache::loncommon::help_open_bug($bug);
1132: # }
1133: if ($helplink ne 'nohelp') {
1134: $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
1135: }
1136: if ($icons ne '') {
1137: $Str .= $icons.' ';
1138: }
1139: #
1140: $Str .= $links.'</font></td>';
1141: #
1142: if (defined($component)) {
1143: $Str .= '<td align="right" bgcolor="'.$color.'">'.
1144: '<font size="+1">'.&mt($component).'</font></td>';
1145: }
1146: $Str .= '</tr></table>'."\n";
1147: #
1148: # Return the @Crumbs stack to what we started with
1149: push(@Crumbs,$last);
1150: shift(@Crumbs);
1151: #
1152: return $Str;
1153: }
1154:
1155: sub clear_breadcrumbs {
1156: undef(@Crumbs);
1157: }
1158:
1159: sub add_breadcrumb {
1160: push (@Crumbs,@_);
1161: }
1162:
1163: } # End of scope for @Crumbs
1164:
1165: ############################################################
1166: ############################################################
1167:
1168:
1169: 1;
1170:
1171: __END__
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