1: # The LearningOnline Network with CAPA
2: # a pile of common html routines
3: #
4: # $Id: lonhtmlcommon.pm,v 1.107 2005/06/06 15:54:28 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) = @_;
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=0;
286: $min=0;
287: }
288: my $result = "\n<!-- $dname date setting form -->\n";
289: $result .= <<ENDJS;
290: <script language="Javascript">
291: function $dname\_checkday() {
292: var day = document.$formname.$dname\_day.value;
293: var month = document.$formname.$dname\_month.value;
294: var year = document.$formname.$dname\_year.value;
295: var valid = true;
296: if (day < 1) {
297: document.$formname.$dname\_day.value = 1;
298: }
299: if (day > 31) {
300: document.$formname.$dname\_day.value = 31;
301: }
302: if ((month == 1) || (month == 3) || (month == 5) ||
303: (month == 7) || (month == 8) || (month == 10) ||
304: (month == 12)) {
305: if (day > 31) {
306: document.$formname.$dname\_day.value = 31;
307: day = 31;
308: }
309: } else if (month == 2 ) {
310: if ((year % 4 == 0) && (year % 100 != 0)) {
311: if (day > 29) {
312: document.$formname.$dname\_day.value = 29;
313: }
314: } else if (day > 29) {
315: document.$formname.$dname\_day.value = 28;
316: }
317: } else if (day > 30) {
318: document.$formname.$dname\_day.value = 30;
319: }
320: }
321:
322: function $dname\_disable() {
323: document.$formname.$dname\_month.disabled=true;
324: document.$formname.$dname\_day.disabled=true;
325: document.$formname.$dname\_year.disabled=true;
326: document.$formname.$dname\_hour.disabled=true;
327: document.$formname.$dname\_minute.disabled=true;
328: document.$formname.$dname\_second.disabled=true;
329: }
330:
331: function $dname\_enable() {
332: document.$formname.$dname\_month.disabled=false;
333: document.$formname.$dname\_day.disabled=false;
334: document.$formname.$dname\_year.disabled=false;
335: document.$formname.$dname\_hour.disabled=false;
336: document.$formname.$dname\_minute.disabled=false;
337: document.$formname.$dname\_second.disabled=false;
338: }
339:
340: function $dname\_opencalendar() {
341: if (! document.$formname.$dname\_month.disabled) {
342: var calwin=window.open(
343: "/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
344: document.$formname.$dname\_month.value+"&year="+
345: document.$formname.$dname\_year.value,
346: "LONCAPAcal",
347: "height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
348: }
349:
350: }
351: </script>
352: ENDJS
353: $result .= ' <nobr>';
354: my $monthselector = qq{<select name="$dname\_month" $special $state onchange="javascript:$dname\_checkday()" >};
355: # Month
356: my @Months = qw/January February March April May June
357: July August September October November December/;
358: # Pad @Months with a bogus value to make indexing easier
359: unshift(@Months,'If you can read this an error occurred');
360: if ($includeempty) { $monthselector.="<option value=''></option>"; }
361: for(my $m = 1;$m <=$#Months;$m++) {
362: $monthselector .= qq{ <option value="$m" };
363: $monthselector .= "selected " if ($m-1 eq $month);
364: $monthselector .= '> '.&mt($Months[$m]).' </option>';
365: }
366: $monthselector.= ' </select>';
367: # Day
368: my $dayselector = qq{<input type="text" name="$dname\_day" $state value="$mday" size="3" $special onchange="javascript:$dname\_checkday()" />};
369: # Year
370: my $yearselector = qq{<input type="year" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
371: #
372: my $hourselector = qq{<select name="$dname\_hour" $special $state >};
373: if ($includeempty) {
374: $hourselector.=qq{<option value=''></option>};
375: }
376: for (my $h = 0;$h<24;$h++) {
377: $hourselector .= qq{<option value="$h" };
378: $hourselector .= "selected " if (defined($hour) && $hour == $h);
379: $hourselector .= ">";
380: my $timest='';
381: if ($h == 0) {
382: $timest .= "12 am";
383: } elsif($h == 12) {
384: $timest .= "12 noon";
385: } elsif($h < 12) {
386: $timest .= "$h am";
387: } else {
388: $timest .= $h-12 ." pm";
389: }
390: $timest=&mt($timest);
391: $hourselector .= $timest." </option>\n";
392: }
393: $hourselector .= " </select>\n";
394: my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
395: my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
396: my $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
397: #
398: if ($no_hh_mm_ss) {
399: $result .= &mt('[_1] [_2] [_3] [_4]Select Date[_5]',
400: $monthselector,$dayselector,$yearselector,
401: $cal_link,'</a>');
402: } else {
403: $result .= &mt('[_1] [_2] [_3] [_4] [_5]m [_6]s [_7]Select Date[_8]',
404: $monthselector,$dayselector,$yearselector,
405: $hourselector,$minuteselector,$secondselector,
406: $cal_link,'</a>');
407: }
408: $result .= "</nobr>\n<!-- end $dname date setting form -->\n";
409: return $result;
410: }
411:
412: ##############################################
413: ##############################################
414:
415: =pod
416:
417: =item &get_date_from_form
418:
419: get_date_from_form retrieves the date specified in an &date_setter form.
420:
421: Inputs:
422:
423: =over 4
424:
425: =item $dname
426:
427: The name passed to &datesetter, which prefixes the form elements.
428:
429: =item $defaulttime
430:
431: The unix time to use as the default in case of poor inputs.
432:
433: =back
434:
435: Returns: Unix time represented in the form.
436:
437: =cut
438:
439: ##############################################
440: ##############################################
441: sub get_date_from_form {
442: my ($dname) = @_;
443: my ($sec,$min,$hour,$day,$month,$year);
444: #
445: if (defined($env{'form.'.$dname.'_second'})) {
446: my $tmpsec = $env{'form.'.$dname.'_second'};
447: if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
448: $sec = $tmpsec;
449: }
450: if (!defined($tmpsec) || $tmpsec eq '') { $sec = 0; }
451: } else {
452: $sec = 0;
453: }
454: if (defined($env{'form.'.$dname.'_minute'})) {
455: my $tmpmin = $env{'form.'.$dname.'_minute'};
456: if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
457: $min = $tmpmin;
458: }
459: if (!defined($tmpmin) || $tmpmin eq '') { $min = 0; }
460: } else {
461: $min = 0;
462: }
463: if (defined($env{'form.'.$dname.'_hour'})) {
464: my $tmphour = $env{'form.'.$dname.'_hour'};
465: if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
466: $hour = $tmphour;
467: }
468: } else {
469: $hour = 0;
470: }
471: if (defined($env{'form.'.$dname.'_day'})) {
472: my $tmpday = $env{'form.'.$dname.'_day'};
473: if (($tmpday =~ /^\d+$/) && ($tmpday > 0) && ($tmpday < 32)) {
474: $day = $tmpday;
475: }
476: }
477: if (defined($env{'form.'.$dname.'_month'})) {
478: my $tmpmonth = $env{'form.'.$dname.'_month'};
479: if (($tmpmonth =~ /^\d+$/) && ($tmpmonth > 0) && ($tmpmonth < 13)) {
480: $month = $tmpmonth - 1;
481: }
482: }
483: if (defined($env{'form.'.$dname.'_year'})) {
484: my $tmpyear = $env{'form.'.$dname.'_year'};
485: if (($tmpyear =~ /^\d+$/) && ($tmpyear > 1900)) {
486: $year = $tmpyear - 1900;
487: }
488: }
489: if (($year<70) || ($year>137)) { return undef; }
490: if (defined($sec) && defined($min) && defined($hour) &&
491: defined($day) && defined($month) && defined($year) &&
492: eval(&timelocal($sec,$min,$hour,$day,$month,$year))) {
493: return &timelocal($sec,$min,$hour,$day,$month,$year);
494: } else {
495: return undef;
496: }
497: }
498:
499: ##############################################
500: ##############################################
501:
502: =pod
503:
504: =item &pjump_javascript_definition()
505:
506: Returns javascript defining the 'pjump' function, which opens up a
507: parameter setting wizard.
508:
509: =cut
510:
511: ##############################################
512: ##############################################
513: sub pjump_javascript_definition {
514: my $Str = <<END;
515: function pjump(type,dis,value,marker,ret,call) {
516: parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
517: +"&value="+escape(value)+"&marker="+escape(marker)
518: +"&return="+escape(ret)
519: +"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
520: "height=350,width=350,scrollbars=no,menubar=no");
521: }
522: END
523: return $Str;
524: }
525:
526: ##############################################
527: ##############################################
528:
529: =pod
530:
531: =item &javascript_nothing()
532:
533: Return an appropriate null for the users browser. This is used
534: as the first arguement for window.open calls when you want a blank
535: window that you can then write to.
536:
537: =cut
538:
539: ##############################################
540: ##############################################
541: sub javascript_nothing {
542: # mozilla and other browsers work with "''", but IE on mac does not.
543: my $nothing = "''";
544: my $user_browser;
545: my $user_os;
546: $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
547: $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
548: if (! defined($user_browser) || ! defined($user_os)) {
549: (undef,$user_browser,undef,undef,undef,$user_os) =
550: &Apache::loncommon::decode_user_agent();
551: }
552: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
553: $nothing = "'javascript:void(0);'";
554: }
555: return $nothing;
556: }
557:
558: ##############################################
559: ##############################################
560: sub javascript_docopen {
561: # safari does not understand document.open() and loads "text/html"
562: my $nothing = "''";
563: my $user_browser;
564: my $user_os;
565: $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
566: $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
567: if (! defined($user_browser) || ! defined($user_os)) {
568: (undef,$user_browser,undef,undef,undef,$user_os) =
569: &Apache::loncommon::decode_user_agent();
570: }
571: if ($user_browser eq 'safari' && $user_os =~ 'mac') {
572: $nothing = "document.clear()";
573: } else {
574: $nothing = "document.open('text/html','replace')";
575: }
576: return $nothing;
577: }
578:
579:
580: ##############################################
581: ##############################################
582:
583: =pod
584:
585: =item &StatusOptions()
586:
587: Returns html for a selection box which allows the user to choose the
588: enrollment status of students. The selection box name is 'Status'.
589:
590: Inputs:
591:
592: $status: the currently selected status. If undefined the value of
593: $env{'form.Status'} is taken. If that is undefined, a value of 'Active'
594: is used.
595:
596: $formname: The name of the form. If defined the onchange attribute of
597: the selection box is set to document.$formname.submit().
598:
599: $size: the size (number of lines) of the selection box.
600:
601: $onchange: javascript to use when the value is changed. Enclosed in
602: double quotes, ""s, not single quotes.
603:
604: Returns: a perl string as described.
605:
606: =cut
607:
608: ##############################################
609: ##############################################
610: sub StatusOptions {
611: my ($status, $formName,$size,$onchange)=@_;
612: $size = 1 if (!defined($size));
613: if (! defined($status)) {
614: $status = 'Active';
615: $status = $env{'form.Status'} if (exists($env{'form.Status'}));
616: }
617:
618: my $OpSel1 = '';
619: my $OpSel2 = '';
620: my $OpSel3 = '';
621:
622: if($status eq 'Any') { $OpSel3 = ' selected'; }
623: elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; }
624: else { $OpSel1 = ' selected'; }
625:
626: my $Str = '';
627: $Str .= '<select name="Status"';
628: if(defined($formName) && $formName ne '' && ! defined($onchange)) {
629: $Str .= ' onchange="document.'.$formName.'.submit()"';
630: }
631: if (defined($onchange)) {
632: $Str .= ' onchange="'.$onchange.'"';
633: }
634: $Str .= ' size="'.$size.'" ';
635: $Str .= '>'."\n";
636: $Str .= '<option value="Active" '.$OpSel1.'>'.
637: &mt('Currently Enrolled').'</option>'."\n";
638: $Str .= '<option value="Expired" '.$OpSel2.'>'.
639: &mt('Previously Enrolled').'</option>'."\n";
640: $Str .= '<option value="Any" '.$OpSel3.'>'.
641: &mt('Any Enrollment Status').'</option>'."\n";
642: $Str .= '</select>'."\n";
643: }
644:
645: ########################################################
646: ########################################################
647:
648: =pod
649:
650: =item Progess Window Handling Routines
651:
652: These routines handle the creation, update, increment, and closure of
653: progress windows. The progress window reports to the user the number
654: of items completed and an estimate of the time required to complete the rest.
655:
656: =over 4
657:
658:
659: =item &Create_PrgWin
660:
661: Writes javascript to the client to open a progress window and returns a
662: data structure used for bookkeeping.
663:
664: Inputs
665:
666: =over 4
667:
668: =item $r Apache request
669:
670: =item $title The title of the progress window
671:
672: =item $heading A description (usually 1 line) of the process being initiated.
673:
674: =item $number_to_do The total number of items being processed.
675:
676: =item $type Either 'popup' or 'inline' (popup is assumed if nothing is
677: specified)
678:
679: =item $width Specify the width in charaters of the input field.
680:
681: =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
682:
683: =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
684:
685: =back
686:
687: Returns a hash containing the progress state data structure.
688:
689:
690: =item &Update_PrgWin
691:
692: Updates the text in the progress indicator. Does not increment the count.
693: See &Increment_PrgWin.
694:
695: Inputs:
696:
697: =over 4
698:
699: =item $r Apache request
700:
701: =item $prog_state Pointer to the data structure returned by &Create_PrgWin
702:
703: =item $displaystring The string to write to the status indicator
704:
705: =back
706:
707: Returns: none
708:
709:
710: =item Increment_PrgWin
711:
712: Increment the count of items completed for the progress window by 1.
713:
714: Inputs:
715:
716: =over 4
717:
718: =item $r Apache request
719:
720: =item $prog_state Pointer to the data structure returned by Create_PrgWin
721:
722: =item $extraInfo A description of the items being iterated over. Typically
723: 'student'.
724:
725: =back
726:
727: Returns: none
728:
729:
730: =item Close_PrgWin
731:
732: Closes the progress window.
733:
734: Inputs:
735:
736: =over 4
737:
738: =item $r Apache request
739:
740: =item $prog_state Pointer to the data structure returned by Create_PrgWin
741:
742: =back
743:
744: Returns: none
745:
746: =back
747:
748: =cut
749:
750: ########################################################
751: ########################################################
752:
753: my $uniq=0;
754: sub get_uniq_name {
755: $uniq++;
756: return 'uniquename'.$uniq;
757: }
758:
759: # Create progress
760: sub Create_PrgWin {
761: my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
762: $inputname)=@_;
763: if (!defined($type)) { $type='popup'; }
764: if (!defined($width)) { $width=55; }
765: my %prog_state;
766: $prog_state{'type'}=$type;
767: if ($type eq 'popup') {
768: $prog_state{'window'}='popwin';
769: my $html=&Apache::lonxml::xmlbegin();
770: #the whole function called through timeout is due to issues
771: #in mozilla Read BUG #2665 if you want to know the whole story
772: &r_print($r,'<script>'.
773: "var popwin;
774: function openpopwin () {
775: popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
776: "popwin.document.writeln(\'".$html."<head><title>$title</title></head>".
777: "<body bgcolor=\"#88DDFF\">".
778: "<h4>$heading</h4>".
779: "<form name=popremain>".
780: '<input type="text" size="'.$width.'" name="remaining" value="'.
781: &mt('Starting').'"></form>'.
782: "</body></html>\');".
783: "popwin.document.close();}".
784: "\nwindow.setTimeout(openpopwin,0)</script>");
785: $prog_state{'formname'}='popremain';
786: $prog_state{'inputname'}="remaining";
787: } elsif ($type eq 'inline') {
788: $prog_state{'window'}='window';
789: if (!$formname) {
790: $prog_state{'formname'}=&get_uniq_name();
791: &r_print($r,'<form name="'.$prog_state{'formname'}.'">');
792: } else {
793: $prog_state{'formname'}=$formname;
794: }
795: if (!$inputname) {
796: $prog_state{'inputname'}=&get_uniq_name();
797: &r_print($r,$heading.' <input type="text" name="'.$prog_state{'inputname'}.
798: '" size="'.$width.'" />');
799: } else {
800: $prog_state{'inputname'}=$inputname;
801:
802: }
803: if (!$formname) { &r_print($r,'</form>'); }
804: &Update_PrgWin($r,\%prog_state,&mt('Starting'));
805: }
806:
807: $prog_state{'done'}=0;
808: $prog_state{'firststart'}=&Time::HiRes::time();
809: $prog_state{'laststart'}=&Time::HiRes::time();
810: $prog_state{'max'}=$number_to_do;
811:
812: return %prog_state;
813: }
814:
815: # update progress
816: sub Update_PrgWin {
817: my ($r,$prog_state,$displayString)=@_;
818: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
819: $$prog_state{'formname'}.'.'.
820: $$prog_state{'inputname'}.'.value="'.
821: $displayString.'";</script>');
822: $$prog_state{'laststart'}=&Time::HiRes::time();
823: }
824:
825: # increment progress state
826: sub Increment_PrgWin {
827: my ($r,$prog_state,$extraInfo)=@_;
828: $$prog_state{'done'}++;
829: my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/
830: $$prog_state{'done'} *
831: ($$prog_state{'max'}-$$prog_state{'done'});
832: $time_est = int($time_est);
833: #
834: my $min = int($time_est/60);
835: my $sec = $time_est % 60;
836: #
837: my $str;
838: if ($min == 0 && $sec > 1) {
839: $str = '[_2] seconds';
840: } elsif ($min == 1 && $sec > 1) {
841: $str = '1 minute [_2] seconds';
842: } elsif ($min == 1 && $sec < 2) {
843: $str = '1 minute';
844: } elsif ($min < 10 && $sec > 1) {
845: $str = '[_1] minutes, [_2] seconds';
846: } elsif ($min >= 10 || $sec < 2) {
847: $str = '[_1] minutes';
848: }
849: $time_est = &mt($str,$min,$sec);
850: #
851: my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
852: if ($lasttime > 9) {
853: $lasttime = int($lasttime);
854: } elsif ($lasttime < 0.01) {
855: $lasttime = 0;
856: } else {
857: $lasttime = sprintf("%3.2f",$lasttime);
858: }
859: if ($lasttime == 1) {
860: $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')';
861: } else {
862: $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')';
863: }
864: #
865: my $user_browser = $env{'browser.type'} if (exists($env{'browser.type'}));
866: my $user_os = $env{'browser.os'} if (exists($env{'browser.os'}));
867: if (! defined($user_browser) || ! defined($user_os)) {
868: (undef,$user_browser,undef,undef,undef,$user_os) =
869: &Apache::loncommon::decode_user_agent();
870: }
871: if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
872: $lasttime = '';
873: }
874: &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
875: $$prog_state{'formname'}.'.'.
876: $$prog_state{'inputname'}.'.value="'.
877: $$prog_state{'done'}.'/'.$$prog_state{'max'}.
878: ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
879: $$prog_state{'laststart'}=&Time::HiRes::time();
880: }
881:
882: # close Progress Line
883: sub Close_PrgWin {
884: my ($r,$prog_state)=@_;
885: if ($$prog_state{'type'} eq 'popup') {
886: &r_print($r,'<script>popwin.close()</script>'."\n");
887: } elsif ($$prog_state{'type'} eq 'inline') {
888: &Update_PrgWin($r,$prog_state,&mt('Done'));
889: }
890: undef(%$prog_state);
891: }
892:
893: sub r_print {
894: my ($r,$to_print)=@_;
895: if ($r) {
896: $r->print($to_print);
897: $r->rflush();
898: } else {
899: print($to_print);
900: }
901: }
902:
903: # ------------------------------------------------------- Puts directory header
904:
905: sub crumbs {
906: my ($uri,$target,$prefix,$form,$size,$noformat)=@_;
907: if (! defined($size)) {
908: $size = '+2';
909: }
910: if ($target) {
911: $target = ' target="'.
912: &Apache::loncommon::escape_single($target).'"';
913: }
914: my $output='';
915: unless ($noformat) { $output.='<br /><tt><b>'; }
916: $output.='<font size="'.$size.'">'.$prefix.'/';
917: if ($env{'user.adv'}) {
918: my $path=$prefix.'/';
919: foreach my $dir (split('/',$uri)) {
920: if (! $dir) { next; }
921: $path .= $dir;
922: unless ($path eq $uri) { $path.='/'; }
923: my $linkpath = &Apache::loncommon::escape_single($path);
924: if ($form) {
925: $linkpath=
926: qq{javascript:$form.action='$linkpath';$form.submit();};
927: }
928: $output.=qq{<a href="$linkpath" $target>$dir</a>/};
929: }
930: } else {
931: $output.=$uri;
932: }
933: unless ($uri=~/\/$/) { $output=~s/\/$//; }
934: return $output.'</font>'.($noformat?'':'</b></tt><br />');
935: }
936:
937: # --------------------- A function that generates a window for the spellchecker
938:
939: sub spellheader {
940: my $html=&Apache::lonxml::xmlbegin();
941: my $nothing=&javascript_nothing();
942: return (<<ENDCHECK);
943: <script type="text/javascript">
944: //<!-- BEGIN LON-CAPA Internal
945: var checkwin;
946:
947: function spellcheckerwindow() {
948: checkwin=window.open($nothing,'spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
949: checkwin.document.writeln('$html<head></head><body bgcolor="#DDDDDD"><form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="" /></form></body></html>');
950: checkwin.document.close();
951: }
952: // END LON-CAPA Internal -->
953: </script>
954: ENDCHECK
955: }
956:
957: # ---------------------------------- Generate link to spell checker for a field
958:
959: sub spelllink {
960: my ($form,$field)=@_;
961: my $linktext=&mt('Check Spelling');
962: return (<<ENDLINK);
963: <a href="javascript:if (typeof(document.$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>
964: ENDLINK
965: }
966:
967: # ------------------------------------------------- Output headers for HTMLArea
968:
969: sub htmlareaheaders {
970: if (&htmlareablocked()) { return ''; }
971: unless (&htmlareabrowser()) { return ''; }
972: my $lang='en';
973: if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
974: $lang=&mt('htmlarea_lang');
975: }
976: return (<<ENDHEADERS);
977: <script type="text/javascript">
978: _editor_url='/htmlarea/';
979: _editor_lang='$lang';
980: </script>
981: <script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
982: ENDHEADERS
983: }
984:
985: # ------------------------------------------------- Activate additional buttons
986:
987: sub htmlareaaddbuttons {
988: if (&htmlareablocked()) { return ''; }
989: unless (&htmlareabrowser()) { return ''; }
990: return (<<ENDADDBUTTON);
991: var config=new HTMLArea.Config();
992: config.registerButton('ed_math','LaTeX Inline',
993: '/htmlarea/images/ed_math.gif',false,
994: function(editor,id) {
995: editor.surroundHTML(' <m>\$','\$</m> ');
996: }
997: );
998: config.registerButton('ed_math_eqn','LaTeX Equation',
999: '/htmlarea/images/ed_math_eqn.gif',false,
1000: function(editor,id) {
1001: editor.surroundHTML(
1002: ' \\n<center><m>\\\\[','\\\\]</m></center>\\n ');
1003: }
1004: );
1005: config.toolbar.push(['ed_math','ed_math_eqn']);
1006: ENDADDBUTTON
1007: }
1008:
1009: # ----------------------------------------------------------------- Preferences
1010:
1011: sub disablelink {
1012: my @fields=@_;
1013: if (defined($#fields)) {
1014: unless ($#fields>=0) { return ''; }
1015: }
1016: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=off&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Disable WYSIWYG Editor').'</a>';
1017: }
1018:
1019: sub enablelink {
1020: my @fields=@_;
1021: if (defined($#fields)) {
1022: unless ($#fields>=0) { return ''; }
1023: }
1024: return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=on&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Enable WYSIWYG Editor').'</a>';
1025: }
1026:
1027: # ----------------------------------------- Script to activate only some fields
1028:
1029: sub htmlareaselectactive {
1030: my @fields=@_;
1031: unless (&htmlareabrowser()) { return ''; }
1032: if (&htmlareablocked()) { return '<br />'.&enablelink(@fields); }
1033: my $output='<script type="text/javascript" defer="1">'.
1034: &htmlareaaddbuttons();
1035: foreach(@fields) {
1036: $output.="\nHTMLArea.replace('$_',config);";
1037: }
1038: $output.="\nwindow.status='Activated Editfields';\n</script><br />".
1039: &disablelink(@fields);
1040: return $output;
1041: }
1042:
1043: # --------------------------------------------------------------------- Blocked
1044:
1045: sub htmlareablocked {
1046: unless ($env{'environment.wysiwygeditor'} eq 'on') { return 1; }
1047: return 0;
1048: }
1049:
1050: # ---------------------------------------- Browser capable of running HTMLArea?
1051:
1052: sub htmlareabrowser {
1053: return 1;
1054: }
1055:
1056: ############################################################
1057: ############################################################
1058:
1059: =pod
1060:
1061: =item breadcrumbs
1062:
1063: Compiles the previously registered breadcrumbs into an series of links.
1064: FAQ and BUG links will be placed on the left side of the table if they
1065: are defined for the last registered breadcrumb.
1066: Additionally supports a 'component', which will be displayed on the
1067: right side of the table (without a link).
1068: A link to help for the component will be included if one is specified.
1069:
1070: All inputs can be undef without problems.
1071:
1072: Inputs: $color (the background color of the table returned),
1073: $component (the large text on the right side of the table),
1074: $component_help
1075: $function (role to get colors from)
1076: $domain (domian of role)
1077: $menulink (boolean, controls whether to include a link to /adm/menu)
1078:
1079: Returns a string containing breadcrumbs for the current page.
1080:
1081: =item clear_breadcrumbs
1082:
1083: Clears the previously stored breadcrumbs.
1084:
1085: =item add_breadcrumb
1086:
1087: Pushes a breadcrumb on the stack of crumbs.
1088:
1089: input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
1090: are required. If present the keys 'faq' and 'bug' will be used to provide
1091: links to the FAQ and bug sites.
1092:
1093: returns: nothing
1094:
1095: =cut
1096:
1097: ############################################################
1098: ############################################################
1099: {
1100: my @Crumbs;
1101:
1102: sub breadcrumbs {
1103: my ($color,$component,$component_help,$function,$domain,$menulink,
1104: $helplink) = @_;
1105: if (! defined($color)) {
1106: if (! defined($function)) {
1107: $function = &Apache::loncommon::get_users_function();
1108: }
1109: $color = &Apache::loncommon::designparm($function.'.tabbg',
1110: $domain);
1111: }
1112: #
1113: my $Str = "\n".
1114: '<table width="100%" border="0" cellpadding="0" cellspacing="0">'.
1115: '<tr><td bgcolor="'.$color.'">'.
1116: '<font size="-1">';
1117: #
1118: # Make the faq and bug data cascade
1119: my $faq = '';
1120: my $bug = '';
1121: my $help='';
1122: # The last breadcrumb does not have a link, so handle it separately.
1123: my $last = pop(@Crumbs);
1124: #
1125: # The first one should be the course or a menu link
1126: if (!defined($menulink)) { $menulink=1; }
1127: if ($menulink) {
1128: my $description = 'Menu';
1129: if (exists($env{'request.course.id'}) &&
1130: $env{'request.course.id'} ne '') {
1131: $description =
1132: $env{'course.'.$env{'request.course.id'}.'.description'};
1133: }
1134: unshift(@Crumbs,{
1135: href =>'/adm/menu',
1136: title =>'Go to main menu',
1137: target =>'_top',
1138: text =>$description,
1139: });
1140: }
1141: my $links .=
1142: join('->',
1143: map {
1144: $faq = $_->{'faq'} if (exists($_->{'faq'}));
1145: $bug = $_->{'bug'} if (exists($_->{'bug'}));
1146: $help = $_->{'help'} if (exists($_->{'help'}));
1147: my $result = '<a href="'.$_->{'href'}.'" ';
1148: if (defined($_->{'target'}) && $_->{'target'} ne '') {
1149: $result .= 'target="'.$_->{'target'}.'" ';
1150: }
1151: $result .='title="'.&mt($_->{'title'}).'">'.
1152: &mt($_->{'text'}).'</a>';
1153: $result;
1154: } @Crumbs
1155: );
1156: $links .= '->' if ($links ne '');
1157: $links .= '<b>'.&mt($last->{'text'}).'</b>';
1158: #
1159: my $icons = '';
1160: $faq = $last->{'faq'} if (exists($last->{'faq'}));
1161: $bug = $last->{'bug'} if (exists($last->{'bug'}));
1162: $help = $last->{'help'} if (exists($last->{'help'}));
1163: $component_help=($component_help?$component_help:$help);
1164: # if ($faq ne '') {
1165: # $icons .= &Apache::loncommon::help_open_faq($faq);
1166: # }
1167: # if ($bug ne '') {
1168: # $icons .= &Apache::loncommon::help_open_bug($bug);
1169: # }
1170: if ($helplink ne 'nohelp') {
1171: $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
1172: }
1173: if ($icons ne '') {
1174: $Str .= $icons.' ';
1175: }
1176: #
1177: $Str .= $links.'</font></td>';
1178: #
1179: if (defined($component)) {
1180: $Str .= '<td align="right" bgcolor="'.$color.'">'.
1181: '<font size="+1">'.&mt($component).'</font></td>';
1182: }
1183: $Str .= '</tr></table>'."\n";
1184: #
1185: # Return the @Crumbs stack to what we started with
1186: push(@Crumbs,$last);
1187: shift(@Crumbs);
1188: #
1189: return $Str;
1190: }
1191:
1192: sub clear_breadcrumbs {
1193: undef(@Crumbs);
1194: }
1195:
1196: sub add_breadcrumb {
1197: push (@Crumbs,@_);
1198: }
1199:
1200: } # End of scope for @Crumbs
1201:
1202: ############################################################
1203: ############################################################
1204:
1205:
1206: 1;
1207:
1208: __END__
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