--- loncom/interface/lonhtmlcommon.pm 2004/02/12 22:23:30 1.46
+++ loncom/interface/lonhtmlcommon.pm 2005/02/17 08:29:42 1.103
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# a pile of common html routines
#
-# $Id: lonhtmlcommon.pm,v 1.46 2004/02/12 22:23:30 matthew Exp $
+# $Id: lonhtmlcommon.pm,v 1.103 2005/02/17 08:29:42 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -56,10 +56,10 @@ html.
package Apache::lonhtmlcommon;
use Time::Local;
+use Time::HiRes;
use Apache::lonlocal;
use strict;
-
##############################################
##############################################
@@ -80,7 +80,7 @@ sub authorbombs {
foreach (keys %bombs) {
if ($_=~/^$udom\/$uname\//) {
return '<a href="/adm/bombs/'.$url.
- '"><img src="/adm/lonMisc/bomb.gif" border="0" /></a>'.
+ '"><img src="'.&Apache::loncommon::lonhttpdurl('/adm/lonMisc/bomb.gif').'" border="0" /></a>'.
&Apache::loncommon::help_open_topic('About_Bombs');
}
}
@@ -117,15 +117,22 @@ sub store_recent {
time.'&'.&Apache::lonnet::escape($value) });
}
+sub remove_recent {
+ my ($area,$names)=@_;
+ my $file=&recent_filename($area);
+ return &Apache::lonnet::del($file,$names);
+}
+
sub select_recent {
my ($area,$fieldname,$event)=@_;
my %recent=&Apache::lonnet::dump(&recent_filename($area));
my $return="\n<select name='$fieldname'".
- ($event?" onChange='$event'":'').
+ ($event?" onchange='$event'":'').
">\n<option value=''>--- ".&mt('Recent')." ---</option>";
foreach (sort keys %recent) {
unless ($_=~/^error\:/) {
- $return.="\n<option value='$_'>".
+ my $escaped = &Apache::loncommon::escape_url($_);
+ $return.="\n<option value='$escaped'>".
&Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]).
'</option>';
}
@@ -134,6 +141,30 @@ sub select_recent {
return $return;
}
+sub get_recent {
+ my ($area, $n) = @_;
+ my %recent=&Apache::lonnet::dump(&recent_filename($area));
+
+# Create hash with key as time and recent as value
+ my %time_hash = ();
+ foreach (keys %recent) {
+ my $thistime=(split(/\&/,$recent{$_}))[0];
+ $time_hash{$thistime} = $_;
+ }
+
+# Sort by decreasing time and return key value pairs
+ my %return_hash = ();
+ my $idx = 1;
+ foreach (reverse sort keys %time_hash) {
+ $return_hash{$time_hash{$_}} =
+ &Apache::lonnet::unescape((split(/\&/,$recent{$_}))[1]);
+ if ($n && ($idx++ >= $n)) {last;}
+ }
+
+ return %return_hash;
+}
+
+
=pod
@@ -163,9 +194,15 @@ sub textbox {
##############################################
##############################################
sub checkbox {
- my ($name,$value) = @_;
- my $Str = '<input type="checkbox" name="'.$name.'"'.
- ($value?' checked="1"':'').' />';
+ my ($name,$checked,$value) = @_;
+ my $Str = '<input type="checkbox" name="'.$name.'" ';
+ if (defined($value)) {
+ $Str .= 'value="'.$value.'"';
+ }
+ if ($checked) {
+ $Str .= ' checked="1"';
+ }
+ $Str .= ' />';
return $Str;
}
@@ -201,6 +238,13 @@ Also, to be explicit, a value of 'now' a
Additional html/javascript to be associated with each element in
the date_setter. See lonparmset for example usage.
+=item $includeempty
+
+=item $state
+
+Specifies the initial state of the form elements. Either 'disabled' or empty.
+Defaults to empty, which indiciates the form elements are not disabled.
+
=back
Bugs
@@ -212,7 +256,14 @@ The method used to restrict user input w
##############################################
##############################################
sub date_setter {
- my ($formname,$dname,$currentvalue,$special,$includeempty) = @_;
+ my ($formname,$dname,$currentvalue,$special,$includeempty,$state,
+ $no_hh_mm_ss) = @_;
+ if (! defined($state) || $state ne 'disabled') {
+ $state = '';
+ }
+ if (! defined($no_hh_mm_ss)) {
+ $no_hh_mm_ss = 0;
+ }
if (! defined($currentvalue) || $currentvalue eq 'now') {
unless ($includeempty) {
$currentvalue = time;
@@ -221,7 +272,7 @@ sub date_setter {
}
}
# other potentially useful values: wkday,yrday,is_daylight_savings
- my ($sec,$min,$hour,$mday,$month,$year)=('','','','','','');
+ my ($sec,$min,$hour,$mday,$month,$year)=('','',undef,'','','');
if ($currentvalue) {
($sec,$min,$hour,$mday,$month,$year,undef,undef,undef) =
localtime($currentvalue);
@@ -260,45 +311,66 @@ sub date_setter {
document.$formname.$dname\_day.value = 30;
}
}
+
+ function $dname\_disable() {
+ document.$formname.$dname\_month.disabled=true;
+ document.$formname.$dname\_day.disabled=true;
+ document.$formname.$dname\_year.disabled=true;
+ document.$formname.$dname\_hour.disabled=true;
+ document.$formname.$dname\_minute.disabled=true;
+ document.$formname.$dname\_second.disabled=true;
+ }
+
+ function $dname\_enable() {
+ document.$formname.$dname\_month.disabled=false;
+ document.$formname.$dname\_day.disabled=false;
+ document.$formname.$dname\_year.disabled=false;
+ document.$formname.$dname\_hour.disabled=false;
+ document.$formname.$dname\_minute.disabled=false;
+ document.$formname.$dname\_second.disabled=false;
+ }
function $dname\_opencalendar() {
- var calwin=window.open(
+ if (! document.$formname.$dname\_month.disabled) {
+ var calwin=window.open(
"/adm/announcements?pickdate=yes&formname=$formname&element=$dname&month="+
document.$formname.$dname\_month.value+"&year="+
document.$formname.$dname\_year.value,
"LONCAPAcal",
"height=350,width=350,scrollbars=yes,resizable=yes,menubar=no");
+ }
}
</script>
ENDJS
- $result .= " <nobr><select name=\"$dname\_month\" ".$special.' '.
- "onChange=\"javascript:$dname\_checkday()\" >\n";
+ $result .= ' <nobr>';
+ my $monthselector = qq{<select name="$dname\_month" $special $state onchange="javascript:$dname\_checkday()" >};
+ # Month
my @Months = qw/January February March April May June
July August September October November December/;
# Pad @Months with a bogus value to make indexing easier
unshift(@Months,'If you can read this an error occurred');
- if ($includeempty) { $result.="<option value=''></option>"; }
+ if ($includeempty) { $monthselector.="<option value=''></option>"; }
for(my $m = 1;$m <=$#Months;$m++) {
- $result .= " <option value=\"$m\" ";
- $result .= "selected " if ($m-1 eq $month);
- $result .= "> ".&mt($Months[$m])." </option>\n";
- }
- $result .= " </select>\n";
- $result .= " <input type=\"text\" name=\"$dname\_day\" ".
- "value=\"$mday\" size=\"3\" ".$special.' '.
- "onChange=\"javascript:$dname\_checkday()\" />\n";
- $result .= " <input type=\"year\" name=\"$dname\_year\" ".
- "value=\"$year\" size=\"5\" ".$special.' '.
- "onChange=\"javascript:$dname\_checkday()\" />\n";
- $result .= " ";
- $result .= " <select name=\"$dname\_hour\" ".$special." >\n";
- if ($includeempty) { $result.="<option value=''></option>"; }
+ $monthselector .= qq{ <option value="$m" };
+ $monthselector .= "selected " if ($m-1 eq $month);
+ $monthselector .= '> '.&mt($Months[$m]).' </option>';
+ }
+ $monthselector.= ' </select>';
+ # Day
+ my $dayselector = qq{<input type="text" name="$dname\_day" $state value="$mday" size="3" $special onchange="javascript:$dname\_checkday()" />};
+ # Year
+ my $yearselector = qq{<input type="year" name="$dname\_year" $state value="$year" size="5" $special onchange="javascript:$dname\_checkday()" />};
+ #
+ my $hourselector = qq{<select name="$dname\_hour" $special $state >};
+ if ($includeempty) {
+ $hourselector.=qq{<option value=''></option>};
+ }
for (my $h = 0;$h<24;$h++) {
- $result .= " <option value=\"$h\" ";
- $result .= "selected " if ($hour == $h);
- $result .= "> ";
- my $timest='';
+ $hourselector .= qq{<option value="$h" };
+ $hourselector .= "selected " if (defined($hour) && $hour == $h);
+ $hourselector .= ">";
+ my $timest='';
if ($h == 0) {
$timest .= "12 am";
} elsif($h == 12) {
@@ -308,16 +380,25 @@ ENDJS
} else {
$timest .= $h-12 ." pm";
}
- $timest=&mt($timest);
- $result .= $timest." </option>\n";
- }
- $result .= " </select>\n";
- $result .= " <input type=\"text\" name=\"$dname\_minute\" ".$special.' '.
- "value=\"$min\" size=\"3\" /> m\n";
- $result .= " <input type=\"text\" name=\"$dname\_second\" ".$special.' '.
- "value=\"$sec\" size=\"3\" /> s\n";
- $result .= "<a href=\"javascript:$dname\_opencalendar()\">".
- &mt('Select Date')."</a></nobr>\n<!-- end $dname date setting form -->\n";
+ $timest=&mt($timest);
+ $hourselector .= $timest." </option>\n";
+ }
+ $hourselector .= " </select>\n";
+ my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
+ my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
+ my $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
+ #
+ if ($no_hh_mm_ss) {
+ $result .= &mt('[_1] [_2] [_3] [_4]Select Date[_5]',
+ $monthselector,$dayselector,$yearselector,
+ $cal_link,'</a>');
+ } else {
+ $result .= &mt('[_1] [_2] [_3] [_4] [_5]m [_6]s [_7]Select Date[_8]',
+ $monthselector,$dayselector,$yearselector,
+ $hourselector,$minuteselector,$secondselector,
+ $cal_link,'</a>');
+ }
+ $result .= "</nobr>\n<!-- end $dname date setting form -->\n";
return $result;
}
@@ -359,18 +440,26 @@ sub get_date_from_form {
if (($tmpsec =~ /^\d+$/) && ($tmpsec >= 0) && ($tmpsec < 60)) {
$sec = $tmpsec;
}
+ if (!defined($tmpsec) || $tmpsec eq '') { $sec = 0; }
+ } else {
+ $sec = 0;
}
if (defined($ENV{'form.'.$dname.'_minute'})) {
my $tmpmin = $ENV{'form.'.$dname.'_minute'};
if (($tmpmin =~ /^\d+$/) && ($tmpmin >= 0) && ($tmpmin < 60)) {
$min = $tmpmin;
}
+ if (!defined($tmpmin) || $tmpmin eq '') { $min = 0; }
+ } else {
+ $min = 0;
}
if (defined($ENV{'form.'.$dname.'_hour'})) {
my $tmphour = $ENV{'form.'.$dname.'_hour'};
if (($tmphour =~ /^\d+$/) && ($tmphour >= 0) && ($tmphour < 24)) {
$hour = $tmphour;
}
+ } else {
+ $hour = 0;
}
if (defined($ENV{'form.'.$dname.'_day'})) {
my $tmpday = $ENV{'form.'.$dname.'_day'};
@@ -459,6 +548,27 @@ sub javascript_nothing {
return $nothing;
}
+##############################################
+##############################################
+sub javascript_docopen {
+ # safari does not understand document.open() and loads "text/html"
+ my $nothing = "''";
+ my $user_browser;
+ my $user_os;
+ $user_browser = $ENV{'browser.type'} if (exists($ENV{'browser.type'}));
+ $user_os = $ENV{'browser.os'} if (exists($ENV{'browser.os'}));
+ if (! defined($user_browser) || ! defined($user_os)) {
+ (undef,$user_browser,undef,undef,undef,$user_os) =
+ &Apache::loncommon::decode_user_agent();
+ }
+ if ($user_browser eq 'safari' && $user_os =~ 'mac') {
+ $nothing = "document.clear()";
+ } else {
+ $nothing = "document.open('text/html','replace')";
+ }
+ return $nothing;
+}
+
##############################################
##############################################
@@ -556,6 +666,15 @@ Inputs
=item $number_to_do The total number of items being processed.
+=item $type Either 'popup' or 'inline' (popup is assumed if nothing is
+ specified)
+
+=item $width Specify the width in charaters of the input field.
+
+=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
+
+=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
+
=back
Returns a hash containing the progress state data structure.
@@ -624,42 +743,76 @@ Returns: none
########################################################
########################################################
+my $uniq=0;
+sub get_uniq_name {
+ $uniq++;
+ return 'uniquename'.$uniq;
+}
+
# Create progress
sub Create_PrgWin {
- my ($r, $title, $heading, $number_to_do)=@_;
- #the whole function called through timeout is due to issues
- #in mozilla Read BUG #2665 if you want to know the whole story
- $r->print('<script>'.
- "var popwin;
- function openpopwin () {
- popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
- "popwin.document.writeln(\'<html><head><title>$title</title></head>".
+ my ($r, $title, $heading, $number_to_do,$type,$width,$formname,
+ $inputname)=@_;
+ if (!defined($type)) { $type='popup'; }
+ if (!defined($width)) { $width=55; }
+ my %prog_state;
+ $prog_state{'type'}=$type;
+ if ($type eq 'popup') {
+ $prog_state{'window'}='popwin';
+ my $html=&Apache::lonxml::xmlbegin();
+ #the whole function called through timeout is due to issues
+ #in mozilla Read BUG #2665 if you want to know the whole story
+ &r_print($r,'<script>'.
+ "var popwin;
+ function openpopwin () {
+ popwin=open(\'\',\'popwin\',\'width=400,height=100\');".
+ "popwin.document.writeln(\'".$html."<head><title>$title</title></head>".
"<body bgcolor=\"#88DDFF\">".
"<h4>$heading</h4>".
"<form name=popremain>".
- '<input type="text" size="55" name="remaining" value="'.
+ '<input type="text" size="'.$width.'" name="remaining" value="'.
&mt('Starting').'"></form>'.
"</body></html>\');".
- "popwin.document.close();}".
- "\nwindow.setTimeout(openpopwin,0)</script>");
+ "popwin.document.close();}".
+ "\nwindow.setTimeout(openpopwin,0)</script>");
+ $prog_state{'formname'}='popremain';
+ $prog_state{'inputname'}="remaining";
+ } elsif ($type eq 'inline') {
+ $prog_state{'window'}='window';
+ if (!$formname) {
+ $prog_state{'formname'}=&get_uniq_name();
+ &r_print($r,'<form name="'.$prog_state{'formname'}.'">');
+ } else {
+ $prog_state{'formname'}=$formname;
+ }
+ if (!$inputname) {
+ $prog_state{'inputname'}=&get_uniq_name();
+ &r_print($r,$heading.' <input type="text" name="'.$prog_state{'inputname'}.
+ '" size="'.$width.'" />');
+ } else {
+ $prog_state{'inputname'}=$inputname;
+
+ }
+ if (!$formname) { &r_print($r,'</form>'); }
+ &Update_PrgWin($r,\%prog_state,&mt('Starting'));
+ }
- my %prog_state;
$prog_state{'done'}=0;
$prog_state{'firststart'}=&Time::HiRes::time();
$prog_state{'laststart'}=&Time::HiRes::time();
$prog_state{'max'}=$number_to_do;
-
- $r->rflush();
+
return %prog_state;
}
# update progress
sub Update_PrgWin {
my ($r,$prog_state,$displayString)=@_;
- $r->print('<script>popwin.document.popremain.remaining.value="'.
- $displayString.'";</script>');
+ &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
+ $$prog_state{'formname'}.'.'.
+ $$prog_state{'inputname'}.'.value="'.
+ $displayString.'";</script>');
$$prog_state{'laststart'}=&Time::HiRes::time();
- $r->rflush();
}
# increment progress state
@@ -670,20 +823,24 @@ sub Increment_PrgWin {
$$prog_state{'done'} *
($$prog_state{'max'}-$$prog_state{'done'});
$time_est = int($time_est);
- if (int ($time_est/60) > 0) {
- my $min = int($time_est/60);
- my $sec = $time_est % 60;
- $time_est = $min.' '.&mt('minutes');
- if ($min < 10) {
- if ($sec > 1) {
- $time_est.= ', '.$sec.' '.&mt('seconds');
- } elsif ($sec > 0) {
- $time_est.= ', '.$sec.' '.&mt('second');
- }
- }
- } else {
- $time_est .= ' '.&mt('seconds');
+ #
+ my $min = int($time_est/60);
+ my $sec = $time_est % 60;
+ #
+ my $str;
+ if ($min == 0 && $sec > 1) {
+ $str = '[_2] seconds';
+ } elsif ($min == 1 && $sec > 1) {
+ $str = '1 minute [_2] seconds';
+ } elsif ($min == 1 && $sec < 2) {
+ $str = '1 minute';
+ } elsif ($min < 10 && $sec > 1) {
+ $str = '[_1] minutes, [_2] seconds';
+ } elsif ($min >= 10 || $sec < 2) {
+ $str = '[_1] minutes';
}
+ $time_est = &mt($str,$min,$sec);
+ #
my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'};
if ($lasttime > 9) {
$lasttime = int($lasttime);
@@ -707,46 +864,332 @@ sub Increment_PrgWin {
if ($user_browser eq 'explorer' && $user_os =~ 'mac') {
$lasttime = '';
}
- $r->print('<script>popwin.document.popremain.remaining.value="'.
- $$prog_state{'done'}.'/'.$$prog_state{'max'}.
- ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
+ &r_print($r,'<script>'.$$prog_state{'window'}.'.document.'.
+ $$prog_state{'formname'}.'.'.
+ $$prog_state{'inputname'}.'.value="'.
+ $$prog_state{'done'}.'/'.$$prog_state{'max'}.
+ ': '.$time_est.' '.&mt('remaining').' '.$lasttime.'";'.'</script>');
$$prog_state{'laststart'}=&Time::HiRes::time();
- $r->rflush();
}
# close Progress Line
sub Close_PrgWin {
my ($r,$prog_state)=@_;
- $r->print('<script>popwin.close()</script>'."\n");
+ if ($$prog_state{'type'} eq 'popup') {
+ &r_print($r,'<script>popwin.close()</script>'."\n");
+ } elsif ($$prog_state{'type'} eq 'inline') {
+ &Update_PrgWin($r,$prog_state,&mt('Done'));
+ }
undef(%$prog_state);
- $r->rflush();
}
+sub r_print {
+ my ($r,$to_print)=@_;
+ if ($r) {
+ $r->print($to_print);
+ $r->rflush();
+ } else {
+ print($to_print);
+ }
+}
# ------------------------------------------------------- Puts directory header
sub crumbs {
- my ($uri,$target,$prefix,$form)=@_;
- my $output='<br /><tt><b><font size="+2">'.$prefix.'/';
+ my ($uri,$target,$prefix,$form,$size,$noformat)=@_;
+ if (! defined($size)) {
+ $size = '+2';
+ }
+ if ($target) {
+ $target = ' target="'.
+ &Apache::loncommon::escape_single($target).'"';
+ }
+ my $output='';
+ unless ($noformat) { $output.='<br /><tt><b>'; }
+ $output.='<font size="'.$size.'">'.$prefix.'/';
if ($ENV{'user.adv'}) {
my $path=$prefix.'/';
- foreach (split('/',$uri)) {
- unless ($_) { next; }
- $path.=$_;
+ foreach my $dir (split('/',$uri)) {
+ if (! $dir) { next; }
+ $path .= $dir;
unless ($path eq $uri) { $path.='/'; }
- my $linkpath=$path;
- if ($form) {
- $linkpath="javascript:$form.action='$path';$form.submit();";
- }
- $output.='<a href="'.$linkpath.'"'.($target?' target="'.$target.'"':'').'>'.$_.'</a>/';
+ my $linkpath = &Apache::loncommon::escape_single($path);
+ if ($form) {
+ $linkpath=
+ qq{javascript:$form.action='$linkpath';$form.submit();};
+ }
+ $output.=qq{<a href="$linkpath" $target>$dir</a>/};
}
} else {
$output.=$uri;
}
unless ($uri=~/\/$/) { $output=~s/\/$//; }
- return $output.'</font></b></tt><br />';
+ return $output.'</font>'.($noformat?'':'</b></tt><br />');
+}
+
+# --------------------- A function that generates a window for the spellchecker
+
+sub spellheader {
+ my $html=&Apache::lonxml::xmlbegin();
+ return (<<ENDCHECK);
+<script type="text/javascript">
+//<!-- BEGIN LON-CAPA Internal
+var checkwin;
+
+function spellcheckerwindow() {
+ checkwin=window.open('/adm/rat/empty.html','spellcheckwin','height=320,width=280,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no');
+ checkwin.document.writeln('$html<head></head><body bgcolor="#DDDDDD"><form name="spellcheckform" action="/adm/spellcheck" method="post"><input type="hidden" name="text" value="" /></form></body></html>');
+ checkwin.document.close();
+}
+// END LON-CAPA Internal -->
+</script>
+ENDCHECK
+}
+
+# ---------------------------------- Generate link to spell checker for a field
+
+sub spelllink {
+ my ($form,$field)=@_;
+ my $linktext=&mt('Check Spelling');
+ return (<<ENDLINK);
+<a href="javascript:if (typeof(document.$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>
+ENDLINK
+}
+
+# ------------------------------------------------- Output headers for HTMLArea
+
+sub htmlareaheaders {
+ if (&htmlareablocked()) { return ''; }
+ unless (&htmlareabrowser()) { return ''; }
+ my $lang='en';
+ if (&mt('htmlarea_lang') ne 'htmlarea_lang') {
+ $lang=&mt('htmlarea_lang');
+ }
+ return (<<ENDHEADERS);
+<script type="text/javascript">
+_editor_url='/htmlarea/';
+_editor_lang='$lang';
+</script>
+<script type="text/javascript" src="/htmlarea/htmlarea.js"></script>
+ENDHEADERS
+}
+
+# ------------------------------------------------- Activate additional buttons
+
+sub htmlareaaddbuttons {
+ if (&htmlareablocked()) { return ''; }
+ unless (&htmlareabrowser()) { return ''; }
+ return (<<ENDADDBUTTON);
+ var config=new HTMLArea.Config();
+ config.registerButton('ed_math','LaTeX Inline',
+ '/htmlarea/images/ed_math.gif',false,
+ function(editor,id) {
+ editor.surroundHTML(' <m>\$','\$</m> ');
+ }
+ );
+ config.registerButton('ed_math_eqn','LaTeX Equation',
+ '/htmlarea/images/ed_math_eqn.gif',false,
+ function(editor,id) {
+ editor.surroundHTML(
+ ' \\n<center><m>\\\\[','\\\\]</m></center>\\n ');
+ }
+ );
+ config.toolbar.push(['ed_math','ed_math_eqn']);
+ENDADDBUTTON
+}
+
+# ----------------------------------------------------------------- Preferences
+
+sub disablelink {
+ my @fields=@_;
+ if (defined($#fields)) {
+ unless ($#fields>=0) { return ''; }
+ }
+ return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=off&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Disable WYSIWYG Editor').'</a>';
+}
+
+sub enablelink {
+ my @fields=@_;
+ if (defined($#fields)) {
+ unless ($#fields>=0) { return ''; }
+ }
+ return '<a href="'.&HTML::Entities::encode('/adm/preferences?action=set_wysiwyg&wysiwyg=on&returnurl=','<>&"').&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'">'.&mt('Enable WYSIWYG Editor').'</a>';
+}
+
+# ----------------------------------------- Script to activate only some fields
+
+sub htmlareaselectactive {
+ my @fields=@_;
+ unless (&htmlareabrowser()) { return ''; }
+ if (&htmlareablocked()) { return '<br />'.&enablelink(@fields); }
+ my $output='<script type="text/javascript" defer="1">'.
+ &htmlareaaddbuttons();
+ foreach(@fields) {
+ $output.="\nHTMLArea.replace('$_',config);";
+ }
+ $output.="\nwindow.status='Activated Editfields';\n</script><br />".
+ &disablelink(@fields);
+ return $output;
+}
+
+# --------------------------------------------------------------------- Blocked
+
+sub htmlareablocked {
+ unless ($ENV{'environment.wysiwygeditor'} eq 'on') { return 1; }
+ return 0;
+}
+
+# ---------------------------------------- Browser capable of running HTMLArea?
+
+sub htmlareabrowser {
+ return 1;
}
+############################################################
+############################################################
+
+=pod
+
+=item breadcrumbs
+
+Compiles the previously registered breadcrumbs into an series of links.
+FAQ and BUG links will be placed on the left side of the table if they
+are defined for the last registered breadcrumb.
+Additionally supports a 'component', which will be displayed on the
+right side of the table (without a link).
+A link to help for the component will be included if one is specified.
+
+All inputs can be undef without problems.
+
+Inputs: $color (the background color of the table returned),
+ $component (the large text on the right side of the table),
+ $component_help
+ $function (role to get colors from)
+ $domain (domian of role)
+ $menulink (boolean, controls whether to include a link to /adm/menu)
+
+Returns a string containing breadcrumbs for the current page.
+
+=item clear_breadcrumbs
+
+Clears the previously stored breadcrumbs.
+
+=item add_breadcrumb
+
+Pushes a breadcrumb on the stack of crumbs.
+
+input: $breadcrumb, a hash reference. The keys 'href','title', and 'text'
+are required. If present the keys 'faq' and 'bug' will be used to provide
+links to the FAQ and bug sites.
+
+returns: nothing
+
+=cut
+
+############################################################
+############################################################
+{
+ my @Crumbs;
+
+ sub breadcrumbs {
+ my ($color,$component,$component_help,$function,$domain,$menulink,
+ $helplink) = @_;
+ if (! defined($color)) {
+ if (! defined($function)) {
+ $function = &Apache::loncommon::get_users_function();
+ }
+ $color = &Apache::loncommon::designparm($function.'.tabbg',
+ $domain);
+ }
+ #
+ my $Str = "\n".
+ '<table width="100%" border="0" cellpadding="0" cellspacing="0">'.
+ '<tr><td bgcolor="'.$color.'">'.
+ '<font size="-1">';
+ #
+ # Make the faq and bug data cascade
+ my $faq = '';
+ my $bug = '';
+ # The last breadcrumb does not have a link, so handle it separately.
+ my $last = pop(@Crumbs);
+ #
+ # The first one should be the course or a menu link
+ if (!defined($menulink)) { $menulink=1; }
+ if ($menulink) {
+ my $description = 'Menu';
+ if (exists($ENV{'request.course.id'}) &&
+ $ENV{'request.course.id'} ne '') {
+ $description =
+ $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
+ }
+ unshift(@Crumbs,{
+ href =>'/adm/menu',
+ title =>'Go to main menu',
+ target =>'_top',
+ text =>$description,
+ });
+ }
+ my $links .=
+ join('->',
+ map {
+ $faq = $_->{'faq'} if (exists($_->{'faq'}));
+ $bug = $_->{'bug'} if (exists($_->{'bug'}));
+ my $result = '<a href="'.$_->{'href'}.'" ';
+ if (defined($_->{'target'}) && $_->{'target'} ne '') {
+ $result .= 'target="'.$_->{'target'}.'" ';
+ }
+ $result .='title="'.&mt($_->{'title'}).'">'.
+ &mt($_->{'text'}).'</a>';
+ $result;
+ } @Crumbs
+ );
+ $links .= '->' if ($links ne '');
+ $links .= '<b>'.&mt($last->{'text'}).'</b>';
+ #
+ my $icons = '';
+ $faq = $last->{'faq'} if (exists($last->{'faq'}));
+ $bug = $last->{'bug'} if (exists($last->{'bug'}));
+# if ($faq ne '') {
+# $icons .= &Apache::loncommon::help_open_faq($faq);
+# }
+# if ($bug ne '') {
+# $icons .= &Apache::loncommon::help_open_bug($bug);
+# }
+ if ($helplink ne 'nohelp') {
+ $icons .= &Apache::loncommon::help_open_menu($color,$component,$component_help,$function,$faq,$bug);
+ }
+ if ($icons ne '') {
+ $Str .= $icons.' ';
+ }
+ #
+ $Str .= $links.'</font></td>';
+ #
+ if (defined($component)) {
+ $Str .= '<td align="right" bgcolor="'.$color.'">'.
+ '<font size="+1">'.&mt($component).'</font></td>';
+ }
+ $Str .= '</tr></table>'."\n";
+ #
+ # Return the @Crumbs stack to what we started with
+ push(@Crumbs,$last);
+ shift(@Crumbs);
+ #
+ return $Str;
+ }
+
+ sub clear_breadcrumbs {
+ undef(@Crumbs);
+ }
+
+ sub add_breadcrumb {
+ push (@Crumbs,@_);
+ }
+
+} # End of scope for @Crumbs
+
+############################################################
+############################################################
+
1;