1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.108 2005/06/14 02:33:18 www Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ######################################################################
29: ######################################################################
30:
31: =pod
32:
33: =head1 NAME
34:
35: Apache::lonhtmlcommon - routines to do common html things
36:
37: =head1 SYNOPSIS
38:
39: Referenced by other mod_perl Apache modules.
40:
41: =head1 INTRODUCTION
42:
43: lonhtmlcommon is a collection of subroutines used to present information
44: in a consistent html format, or provide other functionality related to
45: html.
46:
47: =head2 General Subroutines
48:
49: =over 4
50:
51: =cut
52:
53: ######################################################################
54: ######################################################################
55:
56: package Apache::lonhtmlcommon;
57:
58: use strict;
59: use Time::Local;
60: use Time::HiRes;
61: use Apache::lonlocal;
62: use Apache::lonnet;
63:
64: ##############################################
65: ##############################################
66:
67: =pod
68:
69: =item authorbombs
70:
71: =cut
72:
73: ##############################################
74: ##############################################
75:
76: sub authorbombs {
77: my $url=shift;
78: $url=&Apache::lonnet::declutter($url);
79: my ($udom,$uname)=($url=~/^(\w+)\/(\w+)\//);
80: my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom);
81: foreach (keys %bombs) {
82: if ($_=~/^$udom\/$uname\//) {
83: return '<a href="/adm/bombs/'.$url.
84: '"><img src="'.&Apache::loncommon::lonhttpdurl('/adm/lonMisc/bomb.gif').'" border="0" /></a>'.
85: &Apache::loncommon::help_open_topic('About_Bombs');
86: }
87: }
88: return '';
89: }
90:
91: ##############################################
92: ##############################################
93:
94: sub recent_filename {
95: my $area=shift;
96: return 'nohist_recent_'.&Apache::lonnet::escape($area);
97: }
98:
99: sub store_recent {
100: my ($area,$name,$value)=@_;
101: my $file=&recent_filename($area);
102: my %recent=&Apache::lonnet::dump($file);
103: if (scalar(keys(%recent))>10) {
104: # remove oldest value
105: my $oldest=time;
106: my $delkey='';
107: foreach (keys %recent) {
108: my $thistime=(split(/\&/,$recent{$_}))[0];
109: if ($thistime<$oldest) {
110: $oldest=$thistime;
111: $delkey=$_;
112: }
113: }
114: &Apache::lonnet::del($file,[$delkey]);
115: }
116: # store new value
117: &Apache::lonnet::put($file,{ $name =>
118: time.'&'.&Apache::lonnet::escape($value) });
119: }
120:
121: sub remove_recent {
122: my ($area,$names)=@_;
123: my $file=&recent_filename($area);
124: return &Apache::lonnet::del($file,$names);
125: }
126:
127: sub select_recent {
128: my ($area,$fieldname,$event)=@_;
129: my %recent=&Apache::lonnet::dump(&recent_filename($area));
130: my $return="\n<select name='$fieldname'".
131: ($event?" onchange='$event'":'').
132: ">\n<option value=''>--- ".&mt('Recent')." ---</option>";
133: foreach (sort keys %recent) {
134: unless ($_=~/^error\:/) {
135: my $escaped = &Apache::loncommon::escape_url($_);
136: $return.="\n<option value='$escaped'>".
137: &Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]).
138: '</option>';
139: }
140: }
141: $return.="\n</select>\n";
142: return $return;
143: }
144:
145: sub get_recent {
146: my ($area, $n) = @_;
147: my %recent=&Apache::lonnet::dump(&recent_filename($area));
148:
149: # Create hash with key as time and recent as value
150: my %time_hash = ();
151: foreach (keys %recent) {
152: my $thistime=(split(/\&/,$recent{$_}))[0];
153: $time_hash{$thistime} = $_;
154: }
155:
156: # Sort by decreasing time and return key value pairs
157: my %return_hash = ();
158: my $idx = 1;
159: foreach (reverse sort keys %time_hash) {
160: $return_hash{$time_hash{$_}} =
161: &Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]);
162: if ($n && ($idx++ >= $n)) {last;}
163: }
164:
165: return %return_hash;
166: }
167:
168:
169:
170: =pod
171:
172: =item textbox
173:
174: =cut
175:
176: ##############################################
177: ##############################################
178: sub textbox {
179: my ($name,$value,$size,$special) = @_;
180: $size = 40 if (! defined($size));
181: my $Str = '<input type="text" name="'.$name.'" size="'.$size.'" '.
182: 'value="'.$value.'" '.$special.' />';
183: return $Str;
184: }
185:
186: ##############################################
187: ##############################################
188:
189: =pod
190:
191: =item checkbox
192:
193: =cut
194:
195: ##############################################
196: ##############################################
197: sub checkbox {
198: my ($name,$checked,$value) = @_;
199: my $Str = '<input type="checkbox" name="'.$name.'" ';
200: if (defined($value)) {
201: $Str .= 'value="'.$value.'"';
202: }
203: if ($checked) {
204: $Str .= ' checked="1"';
205: }
206: $Str .= ' />';
207: return $Str;
208: }
209:
210: ##############################################
211: ##############################################
212:
213: =pod
214:
215: =item &date_setter
216:
217: &date_setter returns html and javascript for a compact date-setting form.
218: To retrieve values from it, use &get_date_from_form().
219:
220: Inputs
221:
222: =over 4
223:
224: =item $dname
225:
226: The name to prepend to the form elements.
227: The form elements defined will be dname_year, dname_month, dname_day,
228: dname_hour, dname_min, and dname_sec.
229:
230: =item $currentvalue
231:
232: The current setting for this time parameter. A unix format time
233: (time in seconds since the beginning of Jan 1st, 1970, GMT.
234: An undefined value is taken to indicate the value is the current time.
235: Also, to be explicit, a value of 'now' also indicates the current time.
236:
237: =item $special
238:
239: Additional html/javascript to be associated with each element in
240: the date_setter. See lonparmset for example usage.
241:
242: =item $includeempty
243:
244: =item $state
245:
246: Specifies the initial state of the form elements. Either 'disabled' or empty.
247: Defaults to empty, which indiciates the form elements are not disabled.
248:
249: =back
250:
251: Bugs
252:
253: The method used to restrict user input will fail in the year 2400.
254:
255: =cut
256:
257: ##############################################
258: ##############################################
259: sub date_setter {
260: my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
261: $no_hh_mm_ss,$defhour,$defmin,$defsec) = @_;
262: my $wasdefined=1;
263: if (! defined($state) || $state ne 'disabled') {
264: $state = '';
265: }
266: if (! defined($no_hh_mm_ss)) {
267: $no_hh_mm_ss = 0;
268: }
269: if (! defined($currentvalue) || $currentvalue eq 'now') {
270: unless ($includeempty) {
271: $currentvalue = time;
272: $wasdefined=0;
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: $year += 1900;
283: }
284: unless ($wasdefined) {
285: $sec=($defsec?$defsec:0);
286: $min=($defmin?$defmin:0);
287: $hour=($defhour?$defhour:0);
288: }
289: my $result = "\n<!-- $dname date setting form -->\n";
290: $result .= <<ENDJS;
291: <script language="Javascript">
292: function $dname\_checkday() {
293: var day = document.$formname.$dname\_day.value;
294: var month = document.$formname.$dname\_month.value;
295: var year = document.$formname.$dname\_year.value;
296: var valid = true;
297: if (day < 1) {
298: document.$formname.$dname\_day.value = 1;
299: }
300: if (day > 31) {
301: document.$formname.$dname\_day.value = 31;
302: }
303: if ((month == 1) || (month == 3) || (month == 5) ||
304: (month == 7) || (month == 8) || (month == 10) ||
305: (month == 12)) {
306: if (day > 31) {
307: document.$formname.$dname\_day.value = 31;
308: day = 31;
309: }
310: } else if (month == 2 ) {
311: if ((year % 4 == 0) && (year % 100 != 0)) {
312: if (day > 29) {
313: document.$formname.$dname\_day.value = 29;
314: }
315: } else if (day > 29) {
316: document.$formname.$dname\_day.value = 28;
317: }
318: } else if (day > 30) {
319: document.$formname.$dname\_day.value = 30;
320: }
321: }
322:
323: function $dname\_disable() {
324: document.$formname.$dname\_month.disabled=true;
325: document.$formname.$dname\_day.disabled=true;
326: document.$formname.$dname\_year.disabled=true;
327: document.$formname.$dname\_hour.disabled=true;
328: document.$formname.$dname\_minute.disabled=true;
329: document.$formname.$dname\_second.disabled=true;
330: }
331:
332: function $dname\_enable() {
333: document.$formname.$dname\_month.disabled=false;
334: document.$formname.$dname\_day.disabled=false;
335: document.$formname.$dname\_year.disabled=false;
336: document.$formname.$dname\_hour.disabled=false;
337: document.$formname.$dname\_minute.disabled=false;
338: document.$formname.$dname\_second.disabled=false;
339: }
340:
341: function $dname\_opencalendar() {
342: if (! document.$formname.$dname\_month.disabled) {
343: var calwin=window.open(
344: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
345: document.$formname.$dname\_month.value+"&year="+
346: document.$formname.$dname\_year.value,
347: "LONCAPAcal",
348: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
349: }
350:
351: }
352: </script>
353: ENDJS
354: $result .= ' <nobr>';
355: my $monthselector = qq{<select name="$dname\_month" $special $state onchange="javascript:$dname\_checkday()" >};
356: # Month
357: my @Months = qw/January February March April May June
358: July August September October November December/;
359: # Pad @Months with a bogus value to make indexing easier
360: unshift(@Months,'If you can read this an error occurred');
361: if ($includeempty) { $monthselector.="<option value=''></option>"; }
362: for(my $m = 1;$m <=$#Months;$m++) {
363: $monthselector .= qq{ <option value="$m" };
364: $monthselector .= "selected " if ($m-1 eq $month);
365: $monthselector .= '> '.&mt($Months[$m]).' </option>';
366: }
367: $monthselector.= ' </select>';
368: # Day
369: my $dayselector = qq{<input type="text" name="$dname\_day" $state value="$mday" size="3" $special onchange="javascript:$dname\_checkday()" />};
370: # Year
371: my $yearselector = qq{<input type="year" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
372: #
373: my $hourselector = qq{<select name="$dname\_hour" $special $state >};
374: if ($includeempty) {
375: $hourselector.=qq{<option value=''></option>};
376: }
377: for (my $h = 0;$h<24;$h++) {
378: $hourselector .= qq{<option value="$h" };
379: $hourselector .= "selected " if (defined($hour) && $hour == $h);
380: $hourselector .= ">";
381: my $timest='';
382: if ($h == 0) {
383: $timest .= "12 am";
384: } elsif($h == 12) {
385: $timest .= "12 noon";
386: } elsif($h < 12) {
387: $timest .= "$h am";
388: } else {
389: $timest .= $h-12 ." pm";
390: }
391: $timest=&mt($timest);
392: $hourselector .= $timest." </option>\n";
393: }
394: $hourselector .= " </select>\n";
395: my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
396: my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
397: my $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
398: #
399: if ($no_hh_mm_ss) {
400: $result .= &mt('[_1] [_2] [_3] [_4]Select Date[_5]',
401: $monthselector,$dayselector,$yearselector,
402: $cal_link,'</a>');
403: } else {
404: $result .= &mt('[_1] [_2] [_3] [_4] [_5]m [_6]s [_7]Select Date[_8]',
405: $monthselector,$dayselector,$yearselector,
406: $hourselector,$minuteselector,$secondselector,
407: $cal_link,'</a>');
408: }
409: $result .= "</nobr>\n<!-- end $dname date setting form -->\n";
410: return $result;
411: }
412:
413: ##############################################
414: ##############################################
415:
416: =pod
417:
418: =item &get_date_from_form
419:
420: get_date_from_form retrieves the date specified in an &date_setter form.
421:
422: Inputs:
423:
424: =over 4
425:
426: =item $dname
427:
428: The name passed to &datesetter, which prefixes the form elements.
429:
430: =item $defaulttime
431:
432: The unix time to use as the default in case of poor inputs.
433:
434: =back
435:
436: Returns: Unix time represented in the form.
437:
438: =cut
439:
440: ##############################################
441: ##############################################
442: sub get_date_from_form {
443: my ($dname) = @_;
444: my ($sec,$min,$hour,$day,$month,$year);
445: #
446: if (defined($env{'form.'.$dname.'_second'})) {
447: my $tmpsec = $env{'form.'.$dname.'_second'};
448: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
449: $sec = $tmpsec;
450: }
451: if (!defined($tmpsec) || $tmpsec eq '') { $sec = 0; }
452: } else {
453: $sec = 0;
454: }
455: if (defined($env{'form.'.$dname.'_minute'})) {
456: my $tmpmin = $env{'form.'.$dname.'_minute'};
457: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
458: $min = $tmpmin;
459: }
460: if (!defined($tmpmin) || $tmpmin eq '') { $min = 0; }
461: } else {
462: $min = 0;
463: }
464: if (defined($env{'form.'.$dname.'_hour'})) {
465: my $tmphour = $env{'form.'.$dname.'_hour'};
466: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
467: $hour = $tmphour;
468: }
469: } else {
470: $hour = 0;
471: }
472: if (defined($env{'form.'.$dname.'_day'})) {
473: my $tmpday = $env{'form.'.$dname.'_day'};
474: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
475: $day = $tmpday;
476: }
477: }
478: if (defined($env{'form.'.$dname.'_month'})) {
479: my $tmpmonth = $env{'form.'.$dname.'_month'};
480: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
481: $month = $tmpmonth - 1;
482: }
483: }
484: if (defined($env{'form.'.$dname.'_year'})) {
485: my $tmpyear = $env{'form.'.$dname.'_year'};
486: if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
487: $year = $tmpyear - 1900;
488: }
489: }
490: if (($year<70) || ($year>137)) { return undef; }
491: if (defined($sec) && defined($min) && defined($hour) &&
492: defined($day) && defined($month) && defined($year) &&
493: eval(&timelocal($sec,$min,$hour,$day,$month,$year))) {
494: return &timelocal($sec,$min,$hour,$day,$month,$year);
495: } else {
496: return undef;
497: }
498: }
499:
500: ##############################################
501: ##############################################
502:
503: =pod
504:
505: =item &pjump_javascript_definition()
506:
507: Returns javascript defining the 'pjump' function, which opens up a
508: parameter setting wizard.
509:
510: =cut
511:
512: ##############################################
513: ##############################################
514: sub pjump_javascript_definition {
515: my $Str = <<END;
516: function pjump(type,dis,value,marker,ret,call) {
517: parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
518: +"&value="+escape(value)+"&marker="+escape(marker)
519: +"&return="+escape(ret)
520: +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
521: "height=350,width=350,scrollbars=no,menubar=no");
522: }
523: END
524: return $Str;
525: }
526:
527: ##############################################
528: ##############################################
529:
530: =pod
531:
532: =item &javascript_nothing()
533:
534: Return an appropriate null for the users browser. This is used
535: as the first arguement for window.open calls when you want a blank
536: window that you can then write to.
537:
538: =cut
539:
540: ##############################################
541: ##############################################
542: sub javascript_nothing {
543: # mozilla and other browsers work with "''", but IE on mac does not.
544: my $nothing = "''";
545: my $user_browser;
546: my $user_os;
547: $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
548: $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
549: if (! defined($user_browser) || ! defined($user_os)) {
550: (undef,$user_browser,undef,undef,undef,$user_os) =
551: &Apache::loncommon::decode_user_agent();
552: }
553: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
554: $nothing = "'javascript:void(0);'";
555: }
556: return $nothing;
557: }
558:
559: ##############################################
560: ##############################################
561: sub javascript_docopen {
562: # safari does not understand document.open() and loads "text/html"
563: my $nothing = "''";
564: my $user_browser;
565: my $user_os;
566: $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
567: $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
568: if (! defined($user_browser) || ! defined($user_os)) {
569: (undef,$user_browser,undef,undef,undef,$user_os) =
570: &Apache::loncommon::decode_user_agent();
571: }
572: if ($user_browser eq 'safari' && $user_os =~ 'mac') {
573: $nothing = "document.clear()";
574: } else {
575: $nothing = "document.open('text/html','replace')";
576: }
577: return $nothing;
578: }
579:
580:
581: ##############################################
582: ##############################################
583:
584: =pod
585:
586: =item &StatusOptions()
587:
588: Returns html for a selection box which allows the user to choose the
589: enrollment status of students. The selection box name is 'Status'.
590:
591: Inputs:
592:
593: $status: the currently selected status. If undefined the value of
594: $env{'form.Status'} is taken. If that is undefined, a value of 'Active'
595: is used.
596:
597: $formname: The name of the form. If defined the onchange attribute of
598: the selection box is set to document.$formname.submit().
599:
600: $size: the size (number of lines) of the selection box.
601:
602: $onchange: javascript to use when the value is changed. Enclosed in
603: double quotes, ""s, not single quotes.
604:
605: Returns: a perl string as described.
606:
607: =cut
608:
609: ##############################################
610: ##############################################
611: sub StatusOptions {
612: my ($status, $formName,$size,$onchange)=@_;
613: $size = 1 if (!defined($size));
614: if (! defined($status)) {
615: $status = 'Active';
616: $status = $env{'form.Status'} if (exists($env{'form.Status'}));
617: }
618:
619: my $OpSel1 = '';
620: my $OpSel2 = '';
621: my $OpSel3 = '';
622:
623: if($status eq 'Any') { $OpSel3 = ' selected'; }
624: elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; }
625: else { $OpSel1 = ' selected'; }
626:
627: my $Str = '';
628: $Str .= '<select name="Status"';
629: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
630: $Str .= ' onchange="document.'.$formName.'.submit()"';
631: }
632: if (defined($onchange)) {
633: $Str .= ' onchange="'.$onchange.'"';
634: }
635: $Str .= ' size="'.$size.'" ';
636: $Str .= '>'."\n";
637: $Str .= '<option value="Active" '.$OpSel1.'>'.
638: &mt('Currently Enrolled').'</option>'."\n";
639: $Str .= '<option value="Expired" '.$OpSel2.'>'.
640: &mt('Previously Enrolled').'</option>'."\n";
641: $Str .= '<option value="Any" '.$OpSel3.'>'.
642: &mt('Any Enrollment Status').'</option>'."\n";
643: $Str .= '</select>'."\n";
644: }
645:
646: ########################################################
647: ########################################################
648:
649: =pod
650:
651: =item Progess Window Handling Routines
652:
653: These routines handle the creation, update, increment, and closure of
654: progress windows. The progress window reports to the user the number
655: of items completed and an estimate of the time required to complete the rest.
656:
657: =over 4
658:
659:
660: =item &Create_PrgWin
661:
662: Writes javascript to the client to open a progress window and returns a
663: data structure used for bookkeeping.
664:
665: Inputs
666:
667: =over 4
668:
669: =item $r Apache request
670:
671: =item $title The title of the progress window
672:
673: =item $heading A description (usually 1 line) of the process being initiated.
674:
675: =item $number_to_do The total number of items being processed.
676:
677: =item $type Either 'popup' or 'inline' (popup is assumed if nothing is
678: specified)
679:
680: =item $width Specify the width in charaters of the input field.
681:
682: =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
683:
684: =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
685:
686: =back
687:
688: Returns a hash containing the progress state data structure.
689:
690:
691: =item &Update_PrgWin
692:
693: Updates the text in the progress indicator. Does not increment the count.
694: See &Increment_PrgWin.
695:
696: Inputs:
697:
698: =over 4
699:
700: =item $r Apache request
701:
702: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
703:
704: =item $displaystring The string to write to the status indicator
705:
706: =back
707:
708: Returns: none
709:
710:
711: =item Increment_PrgWin
712:
713: Increment the count of items completed for the progress window by 1.
714:
715: Inputs:
716:
717: =over 4
718:
719: =item $r Apache request
720:
721: =item $prog_state Pointer to the data structure returned by Create_PrgWin
722:
723: =item $extraInfo A description of the items being iterated over. Typically
724: 'student'.
725:
726: =back
727:
728: Returns: none
729:
730:
731: =item Close_PrgWin
732:
733: Closes the progress window.
734:
735: Inputs:
736:
737: =over 4
738:
739: =item $r Apache request
740:
741: =item $prog_state Pointer to the data structure returned by Create_PrgWin
742:
743: =back
744:
745: Returns: none
746:
747: =back
748:
749: =cut
750:
751: ########################################################
752: ########################################################
753:
754: my $uniq=0;
755: sub get_uniq_name {
756: $uniq++;
757: return 'uniquename'.$uniq;
758: }
759:
760: # Create progress
761: sub Create_PrgWin {
762: my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
763: $inputname)=@_;
764: if (!defined($type)) { $type='popup'; }
765: if (!defined($width)) { $width=55; }
766: my %prog_state;
767: $prog_state{'type'}=$type;
768: if ($type eq 'popup') {
769: $prog_state{'window'}='popwin';
770: my $html=&Apache::lonxml::xmlbegin();
771: #the whole function called through timeout is due to issues
772: #in mozilla Read BUG #2665 if you want to know the whole story
773: &r_print($r,'<script>'.
774: "var popwin;
775: function openpopwin () {
776: popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
777: "popwin.document.writeln(\'".$html."<head><title>$title</title></head>".
778: "<body bgcolor=\"#88DDFF\">".
779: "<h4>$heading</h4>".
780: "<form name=popremain>".
781: '<input type="text" size="'.$width.'" name="remaining" value="'.
782: &mt('Starting').'"></form>'.
783: "</body></html>\');".
784: "popwin.document.close();}".
785: "\nwindow.setTimeout(openpopwin,0)</script>");
786: $prog_state{'formname'}='popremain';
787: $prog_state{'inputname'}="remaining";
788: } elsif ($type eq 'inline') {
789: $prog_state{'window'}='window';
790: if (!$formname) {
791: $prog_state{'formname'}=&get_uniq_name();
792: &r_print($r,'<form name="'.$prog_state{'formname'}.'">');
793: } else {
794: $prog_state{'formname'}=$formname;
795: }
796: if (!$inputname) {
797: $prog_state{'inputname'}=&get_uniq_name();
798: &r_print($r,$heading.' <input type="text" name="'.$prog_state{'inputname'}.
799: '" size="'.$width.'" />');
800: } else {
801: $prog_state{'inputname'}=$inputname;
802:
803: }
804: if (!$formname) { &r_print($r,'</form>'); }
805: &Update_PrgWin($r,\%prog_state,&mt('Starting'));
806: }
807:
808: $prog_state{'done'}=0;
809: $prog_state{'firststart'}=&Time::HiRes::time();
810: $prog_state{'laststart'}=&Time::HiRes::time();
811: $prog_state{'max'}=$number_to_do;
812:
813: return %prog_state;
814: }
815:
816: # update progress
817: sub Update_PrgWin {
818: my ($r,$prog_state,$displayString)=@_;
819: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
820: $$prog_state{'formname'}.'.'.
821: $$prog_state{'inputname'}.'.value="'.
822: $displayString.'";</script>');
823: $$prog_state{'laststart'}=&Time::HiRes::time();
824: }
825:
826: # increment progress state
827: sub Increment_PrgWin {
828: my ($r,$prog_state,$extraInfo)=@_;
829: $$prog_state{'done'}++;
830: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
831: $$prog_state{'done'} *
832: ($$prog_state{'max'}-$$prog_state{'done'});
833: $time_est = int($time_est);
834: #
835: my $min = int($time_est/60);
836: my $sec = $time_est % 60;
837: #
838: my $str;
839: if ($min == 0 && $sec > 1) {
840: $str = '[_2] seconds';
841: } elsif ($min == 1 && $sec > 1) {
842: $str = '1 minute [_2] seconds';
843: } elsif ($min == 1 && $sec < 2) {
844: $str = '1 minute';
845: } elsif ($min < 10 && $sec > 1) {
846: $str = '[_1] minutes, [_2] seconds';
847: } elsif ($min >= 10 || $sec < 2) {
848: $str = '[_1] minutes';
849: }
850: $time_est = &mt($str,$min,$sec);
851: #
852: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
853: if ($lasttime > 9) {
854: $lasttime = int($lasttime);
855: } elsif ($lasttime < 0.01) {
856: $lasttime = 0;
857: } else {
858: $lasttime = sprintf("%3.2f",$lasttime);
859: }
860: if ($lasttime == 1) {
861: $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
862: } else {
863: $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
864: }
865: #
866: my $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
867: my $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
868: if (! defined($user_browser) || ! defined($user_os)) {
869: (undef,$user_browser,undef,undef,undef,$user_os) =
870: &Apache::loncommon::decode_user_agent();
871: }
872: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
873: $lasttime = '';
874: }
875: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
876: $$prog_state{'formname'}.'.'.
877: $$prog_state{'inputname'}.'.value="'.
878: $$prog_state{'done'}.'/'.$$prog_state{'max'}.
879: ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
880: $$prog_state{'laststart'}=&Time::HiRes::time();
881: }
882:
883: # close Progress Line
884: sub Close_PrgWin {
885: my ($r,$prog_state)=@_;
886: if ($$prog_state{'type'} eq 'popup') {
887: &r_print($r,'<script>popwin.close()</script>'."\n");
888: } elsif ($$prog_state{'type'} eq 'inline') {
889: &Update_PrgWin($r,$prog_state,&mt('Done'));
890: }
891: undef(%$prog_state);
892: }
893:
894: sub r_print {
895: my ($r,$to_print)=@_;
896: if ($r) {
897: $r->print($to_print);
898: $r->rflush();
899: } else {
900: print($to_print);
901: }
902: }
903:
904: # ------------------------------------------------------- Puts directory header
905:
906: sub crumbs {
907: my ($uri,$target,$prefix,$form,$size,$noformat)=@_;
908: if (! defined($size)) {
909: $size = '+2';
910: }
911: if ($target) {
912: $target = ' target="'.
913: &Apache::loncommon::escape_single($target).'"';
914: }
915: my $output='';
916: unless ($noformat) { $output.='<br /><tt><b>'; }
917: $output.='<font size="'.$size.'">'.$prefix.'/';
918: if ($env{'user.adv'}) {
919: my $path=$prefix.'/';
920: foreach my $dir (split('/',$uri)) {
921: if (! $dir) { next; }
922: $path .= $dir;
923: unless ($path eq $uri) { $path.='/'; }
924: my $linkpath = &Apache::loncommon::escape_single($path);
925: if ($form) {
926: $linkpath=
927: qq{javascript:$form.action='$linkpath';$form.submit();};
928: }
929: $output.=qq{<a href="$linkpath" $target>$dir</a>/};
930: }
931: } else {
932: $output.=$uri;
933: }
934: unless ($uri=~/\/$/) { $output=~s/\/$//; }
935: return $output.'</font>'.($noformat?'':'</b></tt><br />');
936: }
937:
938: # --------------------- A function that generates a window for the spellchecker
939:
940: sub spellheader {
941: my $html=&Apache::lonxml::xmlbegin();
942: my $nothing=&javascript_nothing();
943: return (<<ENDCHECK);
944: <script type="text/javascript">
945: //<!-- BEGIN LON-CAPA Internal
946: var checkwin;
947:
948: function spellcheckerwindow() {
949: checkwin=window.open($nothing,'spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
950: checkwin.document.writeln('$html<head></head><body bgcolor="#DDDDDD"><form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="" /></form></body></html>');
951: checkwin.document.close();
952: }
953: // END LON-CAPA Internal -->
954: </script>
955: ENDCHECK
956: }
957:
958: # ---------------------------------- Generate link to spell checker for a field
959:
960: sub spelllink {
961: my ($form,$field)=@_;
962: my $linktext=&mt('Check Spelling');
963: return (<<ENDLINK);
964: <a href="javascript:if (typeof(document.$form.onsubmit)!='undefined') { if (document.$form.onsubmit!=null) { document.$form.onsubmit();}};spellcheckerwindow();checkwin.document.forms.spellcheckform.text.value=this.document.forms.$form.$field.value;checkwin.document.forms.spellcheckform.submit();">$linktext</a>
965: ENDLINK
966: }
967:
968: # ------------------------------------------------- Output headers for HTMLArea
969:
970: sub htmlareaheaders {
971: if (&htmlareablocked()) { return ''; }
972: unless (&htmlareabrowser()) { return ''; }
973: my $lang='en';
974: if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
975: $lang=&mt('htmlarea_lang');
976: }
977: return (<<ENDHEADERS);
978: <script type="text/javascript">
979: _editor_url='/htmlarea/';
980: _editor_lang='$lang';
981: </script>
982: <script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
983: ENDHEADERS
984: }
985:
986: # ------------------------------------------------- Activate additional buttons
987:
988: sub htmlareaaddbuttons {
989: if (&htmlareablocked()) { return ''; }
990: unless (&htmlareabrowser()) { return ''; }
991: return (<<ENDADDBUTTON);
992: var config=new HTMLArea.Config();
993: config.registerButton('ed_math','LaTeX Inline',
994: '/htmlarea/images/ed_math.gif',false,
995: function(editor,id) {
996: editor.surroundHTML(' <m>\$','\$</m> ');
997: }
998: );
999: config.registerButton('ed_math_eqn','LaTeX Equation',
1000: '/htmlarea/images/ed_math_eqn.gif',false,
1001: function(editor,id) {
1002: editor.surroundHTML(
1003: ' \\n<center><m>\\\\[','\\\\]</m></center>\\n ');
1004: }
1005: );
1006: config.toolbar.push(['ed_math','ed_math_eqn']);
1007: ENDADDBUTTON
1008: }
1009:
1010: # ----------------------------------------------------------------- Preferences
1011:
1012: sub disablelink {
1013: my @fields=@_;
1014: if (defined($#fields)) {
1015: unless ($#fields>=0) { return ''; }
1016: }
1017: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=off&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Disable WYSIWYG Editor').'</a>';
1018: }
1019:
1020: sub enablelink {
1021: my @fields=@_;
1022: if (defined($#fields)) {
1023: unless ($#fields>=0) { return ''; }
1024: }
1025: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=on&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Enable WYSIWYG Editor').'</a>';
1026: }
1027:
1028: # ----------------------------------------- Script to activate only some fields
1029:
1030: sub htmlareaselectactive {
1031: my @fields=@_;
1032: unless (&htmlareabrowser()) { return ''; }
1033: if (&htmlareablocked()) { return '<br />'.&enablelink(@fields); }
1034: my $output='<script type="text/javascript" defer="1">'.
1035: &htmlareaaddbuttons();
1036: foreach(@fields) {
1037: $output.="\nHTMLArea.replace('$_',config);";
1038: }
1039: $output.="\nwindow.status='Activated Editfields';\n</script><br />".
1040: &disablelink(@fields);
1041: return $output;
1042: }
1043:
1044: # --------------------------------------------------------------------- Blocked
1045:
1046: sub htmlareablocked {
1047: unless ($env{'environment.wysiwygeditor'} eq 'on') { return 1; }
1048: return 0;
1049: }
1050:
1051: # ---------------------------------------- Browser capable of running HTMLArea?
1052:
1053: sub htmlareabrowser {
1054: return 1;
1055: }
1056:
1057: ############################################################
1058: ############################################################
1059:
1060: =pod
1061:
1062: =item breadcrumbs
1063:
1064: Compiles the previously registered breadcrumbs into an series of links.
1065: FAQ and BUG links will be placed on the left side of the table if they
1066: are defined for the last registered breadcrumb.
1067: Additionally supports a 'component', which will be displayed on the
1068: right side of the table (without a link).
1069: A link to help for the component will be included if one is specified.
1070:
1071: All inputs can be undef without problems.
1072:
1073: Inputs: $color (the background color of the table returned),
1074: $component (the large text on the right side of the table),
1075: $component_help
1076: $function (role to get colors from)
1077: $domain (domian of role)
1078: $menulink (boolean, controls whether to include a link to /adm/menu)
1079:
1080: Returns a string containing breadcrumbs for the current page.
1081:
1082: =item clear_breadcrumbs
1083:
1084: Clears the previously stored breadcrumbs.
1085:
1086: =item add_breadcrumb
1087:
1088: Pushes a breadcrumb on the stack of crumbs.
1089:
1090: input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
1091: are required. If present the keys 'faq' and 'bug' will be used to provide
1092: links to the FAQ and bug sites.
1093:
1094: returns: nothing
1095:
1096: =cut
1097:
1098: ############################################################
1099: ############################################################
1100: {
1101: my @Crumbs;
1102:
1103: sub breadcrumbs {
1104: my ($color,$component,$component_help,$function,$domain,$menulink,
1105: $helplink) = @_;
1106: if (! defined($color)) {
1107: if (! defined($function)) {
1108: $function = &Apache::loncommon::get_users_function();
1109: }
1110: $color = &Apache::loncommon::designparm($function.'.tabbg',
1111: $domain);
1112: }
1113: #
1114: my $Str = "\n".
1115: '<table width="100%" border="0" cellpadding="0" cellspacing="0">'.
1116: '<tr><td bgcolor="'.$color.'">'.
1117: '<font size="-1">';
1118: #
1119: # Make the faq and bug data cascade
1120: my $faq = '';
1121: my $bug = '';
1122: my $help='';
1123: # The last breadcrumb does not have a link, so handle it separately.
1124: my $last = pop(@Crumbs);
1125: #
1126: # The first one should be the course or a menu link
1127: if (!defined($menulink)) { $menulink=1; }
1128: if ($menulink) {
1129: my $description = 'Menu';
1130: if (exists($env{'request.course.id'}) &&
1131: $env{'request.course.id'} ne '') {
1132: $description =
1133: $env{'course.'.$env{'request.course.id'}.'.description'};
1134: }
1135: unshift(@Crumbs,{
1136: href =>'/adm/menu',
1137: title =>'Go to main menu',
1138: target =>'_top',
1139: text =>$description,
1140: });
1141: }
1142: my $links .=
1143: join('->',
1144: map {
1145: $faq = $_->{'faq'} if (exists($_->{'faq'}));
1146: $bug = $_->{'bug'} if (exists($_->{'bug'}));
1147: $help = $_->{'help'} if (exists($_->{'help'}));
1148: my $result = '<a href="'.$_->{'href'}.'" ';
1149: if (defined($_->{'target'}) && $_->{'target'} ne '') {
1150: $result .= 'target="'.$_->{'target'}.'" ';
1151: }
1152: $result .='title="'.&mt($_->{'title'}).'">'.
1153: &mt($_->{'text'}).'</a>';
1154: $result;
1155: } @Crumbs
1156: );
1157: $links .= '->' if ($links ne '');
1158: $links .= '<b>'.&mt($last->{'text'}).'</b>';
1159: #
1160: my $icons = '';
1161: $faq = $last->{'faq'} if (exists($last->{'faq'}));
1162: $bug = $last->{'bug'} if (exists($last->{'bug'}));
1163: $help = $last->{'help'} if (exists($last->{'help'}));
1164: $component_help=($component_help?$component_help:$help);
1165: # if ($faq ne '') {
1166: # $icons .= &Apache::loncommon::help_open_faq($faq);
1167: # }
1168: # if ($bug ne '') {
1169: # $icons .= &Apache::loncommon::help_open_bug($bug);
1170: # }
1171: if ($helplink ne 'nohelp') {
1172: $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
1173: }
1174: if ($icons ne '') {
1175: $Str .= $icons.' ';
1176: }
1177: #
1178: $Str .= $links.'</font></td>';
1179: #
1180: if (defined($component)) {
1181: $Str .= '<td align="right" bgcolor="'.$color.'">'.
1182: '<font size="+1">'.&mt($component).'</font></td>';
1183: }
1184: $Str .= '</tr></table>'."\n";
1185: #
1186: # Return the @Crumbs stack to what we started with
1187: push(@Crumbs,$last);
1188: shift(@Crumbs);
1189: #
1190: return $Str;
1191: }
1192:
1193: sub clear_breadcrumbs {
1194: undef(@Crumbs);
1195: }
1196:
1197: sub add_breadcrumb {
1198: push (@Crumbs,@_);
1199: }
1200:
1201: } # End of scope for @Crumbs
1202:
1203: ############################################################
1204: ############################################################
1205:
1206:
1207: 1;
1208:
1209: __END__
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