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edit.pm
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# The LearningOnline Network with CAPA
# edit mode helpers
#
# $Id: edit.pm,v 1.153.2.1 2017/10/04 13:00:41 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
=pod
=head1 NAME
Apache::edit - edit mode helpers
=head1 SYNOPSIS
Invoked by many homework and xml related modules.
&Apache::edit::SUBROUTINENAME(ARGUMENTS);
=head1 INTRODUCTION
This module outputs HTML syntax helpful for the rendering of edit
mode interfaces.
This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.
=head1 SUBROUTINES
=over 4
=item initialize_edit()
initialize edit (set colordepth to zero)
=item tag_start($target,$token,$description)
provide deletion and insertion lists
for the manipulation of a start tag; return a scalar string
=item tag_end($target,$token,$description)
ending syntax corresponding to
&tag_start. return a scalar string.
=item start_table($token)
start table; update colordepth; return scalar string.
=item end_table()
reduce color depth; end table; return scalar string
=item start_spanning_row()
start a new table row spanning the 'edit' environment.
=item start_row()
start a new table row and element.
=item end_row()
end current table element and row.
=item movebuttons($target,$token)
move-up and move-down buttons; return scalar string
=item deletelist($target,$token)
provide a yes option in an HTML select element; return scalar string
=item handle_delete($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,
$style)
respond to a user delete request by passing relevant stack
and array information to various rendering functions; return a scalar string
=item get_insert_list($token)
provide an insertion list based on possibilities from lonxml; return a scalar string
=item insertlist($target,$token)
api that uses get_insert_list; return a scalar string
=item handleinsert($token)
provide an insertion list based on possibilities from lonxml; return a scalar string
=item get_insert_list($token)
provide an insertion list based on possibilities from lonxml; return a scalar string
=item browse($elementname)
provide a link which will open up the filesystem browser (lonindexer) and, once a file is selected, place the result in the form element $elementname.
=item search($elementname)
provide a link which will open up the filesystem searcher (lonsearchcat) and, once a file is selected, place the result in the form element $elementname.
=item editline(tag,data,description,size)
Provide a <input type="text" ../> for single-line text entry. This is to be used for text enclosed by tags, not arguements/parameters associated with a tag.
=back
=cut
package Apache::edit;
use strict;
use Apache::lonnet;
use Apache::loncommon;
use HTML::Entities();
use Apache::lonlocal;
use lib '/home/httpd/lib/perl/';
use LONCAPA;
# Global Vars
# default list of colors to use in editing
@Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
# depth of nesting of edit
$Apache::edit::colordepth=0;
@Apache::edit::inserttag=();
# image-type responses: active background image and curdepth at definition
$Apache::edit::bgimgsrc='';
$Apache::edit::bgimgsrccurdepth='';
sub initialize_edit {
$Apache::edit::colordepth=0;
@Apache::edit::inserttag=();
}
sub tag_start {
my ($target,$token,$description) = @_;
my $result='';
if ($target eq "edit") {
my $tag=$token->[1];
if (!$description) {
$description=&mt(&Apache::lonxml::description($token));
if (!$description) { $description="<$tag>"; }
}
$result.= &start_table($token)."<tr><td>".&Apache::loncommon::insert_folding_button().
" $description</td><td>".&mt('Delete?')." ".&deletelist($target,$token).
"</td><td>".&insertlist($target,$token);
#<td>".
# &movebuttons($target,$token).
# "</tr><tr><td colspan=\"3\">\n";
my @help = Apache::lonxml::helpinfo($token);
if ($help[0]) {
$result .= '</td><td class="LC_edit_problem_latexhelper">'.
Apache::loncommon::help_open_topic(@help);
} else { $result .= "</td><td> "; }
$result .= &end_row().&start_spanning_row();
}
return $result;
}
sub tag_end {
my ($target,$token,$description) = @_;
my $result='';
if ($target eq 'edit') {
$result.="</td></tr>".&end_table()."\n";
}
return $result;
}
sub start_table {
my ($token)=@_;
my $tag = &Apache::lonxml::get_tag($token);
my $color = $Apache::lonxml::insertlist{"$tag.color"};
&Apache::lonxml::debug(" $tag -- $color");
if (!defined($color)) {
$color = $Apache::edit::colorlist[$Apache::edit::colordepth];
}
$Apache::edit::colordepth++;
push(@Apache::edit::inserttag,$token->[1]);
my $result='<div>';
$result.='<table bgcolor="'.$color.'" width="97%" border="0" cellspacing="3" cellpadding="2">';
return $result;
}
sub end_table {
$Apache::edit::colordepth--;
my $result='</table></div>';
$result.='<div><table><tr><td>';
my ($tagname,$closingtag);
if (defined($Apache::edit::inserttag[-2])) {
$tagname=$Apache::edit::inserttag[-2];
} else {
if ($Apache::lonhomework::parsing_a_task) {
$tagname='Task';
} else {
$tagname='problem';
}
}
if (defined($Apache::edit::inserttag[-1])) {
$closingtag=$Apache::edit::inserttag[-1];
}
$result.=&innerinsertlist('edit',$tagname,$closingtag).
"</td></tr></table></div>";
my $last = pop(@Apache::edit::inserttag);
return $result;
}
sub start_spanning_row {
return '<tr name="foldblock_'.$Apache::lonxml::curdepth.
'" style="visibility: \'\'"><td colspan="5" bgcolor="#F0F0F0">';
}
sub start_row { return '<tr><td bgcolor="#DDDDDD">'; }
sub end_row { return '</td></tr>'; }
sub movebuttons {
my ($target,$token) = @_;
my $result='<input type="submit" name="moveup.'.
$Apache::lonxml::curdepth.'" value="Move Up" />';
$result.='<input type="submit" name="movedown.'.
$Apache::lonxml::curdepth.'" value="Move Down" />';
return $result;
}
sub deletelist {
my ($target,$token) = @_;
my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
<option></option>
<option>".&mt('yes')."</option>
</select>";
return $result;
}
sub handle_delete {
if (!$env{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result=0;
if ($space) {
my $sub1="$space\:\:delete_$token->[1]";
{
no strict 'refs';
if (defined &$sub1) {
$result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
}
}
}
if (!$result) {
my $endtag='/'.$token->[1];
my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser,$style);
$$parser['-1']->get_token();
&Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
&Apache::lonxml::end_tag($tagstack,$parstack,$token);
}
return 1;
}
sub get_insert_list {
my ($tagname) = @_;
my $result='';
my @tags= ();
#&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
if ($Apache::lonxml::insertlist{"$tagname.which"}) {
push (@tags, @{ $Apache::lonxml::insertlist{"$tagname.which"} });
}
foreach my $namespace (@Apache::lonxml::namespace) {
if ($Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"}) {
push (@tags, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$tagname.which"} });
}
}
if (@tags) {
my %options;
foreach my $tag (@tags) {
my $descrip=$Apache::lonxml::insertlist{"$tag.description"};
my $tagnum =$Apache::lonxml::insertlist{"$tag.num"};
$options{$descrip} ="<option value=\"$tagnum\">".
&mt($descrip)."</option>\n";
}
foreach my $option (sort(keys(%options))) {$result.=$options{$option};}
if ($result) { $result='<option selected="selected"></option>'.$result; }
}
return $result;
}
sub insertlist {
my ($target,$token) = @_;
return &innerinsertlist($target,$token->[1]);
}
sub innerinsertlist {
my ($target,$tagname,$closingtag) = @_;
my $result;
my $after='';
if ($closingtag) {
$after='_after_'.$closingtag;
}
if ($target eq 'edit') {
my $optionlist= &get_insert_list($tagname);
if ($optionlist) {
$result = &mt('Insert:')."
<select name=\"insert$after\_$Apache::lonxml::curdepth\">
$optionlist
</select>"
} else {
$result=" ";
}
}
return $result;
}
sub handle_insert {
if ($env{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
my $tagnum = $env{"form.insert_$Apache::lonxml::curdepth"};
return &do_insert($tagnum);
}
sub handle_insertafter {
my $tagname=shift;
if ($env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"} eq '') {
return '';
}
my $tagnum =$env{"form.insert_after_$tagname\_$Apache::lonxml::curdepth"};
return &do_insert($tagnum,1);
}
sub do_insert {
my ($tagnum,$after) = @_;
my $result;
my $newtag = $Apache::lonxml::insertlist{"$tagnum.tag"};
my $func = $Apache::lonxml::insertlist{"$newtag.function"};
if ($func eq 'default') {
my $namespace;
if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
my $depth = scalar(@Apache::lonxml::depthcounter);
$depth -- if ($after);
my $inset = "\t"x$depth;
$result.="\n$inset<$newtag></$newtag>";
} else {
if (defined(&$func)) {
{
no strict 'refs';
$result.=&$func();
}
} else {
&Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined. ($tagnum)");
}
}
return $result;
}
sub insert_img {
return '
<img />';
}
sub insert_responseparam {
return '
<responseparam />';
}
sub insert_parameter {
return '
<parameter />';
}
sub insert_formularesponse {
return '
<formularesponse answer="" samples="">
<responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
<textline size="25"/>
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</formularesponse>';
}
sub insert_functionplotresponse {
return '
<functionplotresponse>
<functionplotelements>
</functionplotelements>
<functionplotruleset>
</functionplotruleset>
</functionplotresponse>';
}
sub insert_spline {
return '
<spline />';
}
sub insert_backgroundplot {
return '
<backgroundplot />';
}
sub insert_plotobject {
return '
<plotobject />';
}
sub insert_plotvector {
return '
<plotvector />';
}
sub insert_drawvectorsum {
return '
<drawvectorsum />';
}
sub insert_functionplotrule {
return '
<functionplotrule />';
}
sub insert_functionplotvectorrule {
return '
<functionplotvectorrule />';
}
sub insert_functionplotvectorsumrule {
return '
<functionplotvectorsumrule />';
}
sub insert_functionplotcustomrule {
return '
<functionplotcustomrule>
<answer type="loncapa/perl">
# &fpr_val("label"), &fpr_f($x), &fpr_dfdx($x), &fpr_d2fdx2($x)
# ($xs,$xe,$ys,$ye)=&fpr_vectorcoords("Name"), ($x,$y)=&fpr_objectcoords("Name")
# &fpr_vectorlength("Name"), &fpr_vectorangle("Name")
# Return 0 or 1
return 1;
</answer>
</functionplotcustomrule>';
}
sub insert_functionplotruleset {
return '
<functionplotruleset>
<functionplotrule />
</functionplotruleset>';
}
sub insert_functionplotelements {
return '
<functionplotelements>
<spline />
</functionplotelements>';
}
sub insert_numericalresponse {
return '
<numericalresponse answer="">
<responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance" />
<responseparam name="sig" type="int_range,0-16" default="0,15" description="Significant Figures" />
<textline />
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</numericalresponse>';
}
sub insert_externalresponse {
return '
<externalresponse url="" answer="" answerdisplay="" form="">
<textfield spellcheck="none" />
</externalresponse>';
}
sub insert_customresponse {
return '
<customresponse>
<answer type="loncapa/perl">
</answer>
<textline />
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</customresponse>';
}
sub insert_customresponse_answer {
return '
<answer type="loncapa/perl">
</answer>
';
}
sub insert_customhint {
return '
<customhint>
<answer type="loncapa/perl">
</answer>
</customhint>';
}
sub insert_customhint_answer {
return '
<answer type="loncapa/perl">
</answer>
';
}
sub insert_mathresponse {
return '
<mathresponse>
<answer>
</answer>
<textline />
<hintgroup>
<startouttext />
<endouttext />
</hintgroup>
</mathresponse>';
}
sub insert_mathresponse_answer {
return '
<answer>
</answer>
';
}
sub insert_mathhint {
return '
<mathhint>
<answer>
</answer>
</mathhint>';
}
sub insert_mathhint_answer {
return '
<answer>
</answer>
';
}
sub insert_stringresponse {
return '
<stringresponse answer="" type="">
<textline />
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</stringresponse>';
}
sub insert_essayresponse {
return '
<essayresponse>
<textfield></textfield>
</essayresponse>';
}
sub insert_imageresponse {
return '
<imageresponse max="1">
<foilgroup>
<foil>
</foil>
</foilgroup>
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</imageresponse>';
}
sub insert_optionresponse {
return '
<optionresponse max="10">
<foilgroup options="">
<foil>
<startouttext /><endouttext />
</foil>
</foilgroup>
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</optionresponse>';
}
sub insert_organicresponse {
return '
<organicresponse>
<textline />
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</organicresponse>';
}
sub insert_organicstructure {
return '
<organicstructure />
';
}
sub insert_radiobuttonresponse {
return '
<radiobuttonresponse max="10">
<foilgroup>
<foil>
<startouttext /><endouttext />
</foil>
</foilgroup>
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</radiobuttonresponse>';
}
sub insert_reactionresponse {
return '
<reactionresponse>
<textline />
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</reactionresponse>';
}
sub insert_rankresponse {
return '
<rankresponse max="10">
<foilgroup options="">
<foil>
<startouttext /><endouttext />
</foil>
</foilgroup>
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</rankresponse>';
}
sub insert_matchresponse {
return '
<matchresponse max="10">
<foilgroup options="">
<itemgroup>
<item>
<startouttext /><endouttext />
</item>
</itemgroup>
<foil>
<startouttext /><endouttext />
</foil>
</foilgroup>
<hintgroup>
<startouttext /><endouttext />
</hintgroup>
</matchresponse>';
}
sub insert_startpartmarker { return '<startpartmarker />'; }
sub insert_endpartmarker { return '<endpartmarker />'; }
sub insert_displayduedate { return '<displayduedate />'; }
sub insert_displaytitle { return '<displaytitle />'; }
sub insert_hintpart {
return '
<hintpart on="default">
<startouttext/><endouttext />
</hintpart>';
}
sub insert_hintgroup {
return '
<hintgroup>
<startouttext /><endouttext />
</hintgroup>';
}
sub insert_numericalhint {
return '
<numericalhint>
</numericalhint>';
}
sub insert_reactionhint {
return '
<reactionhint>
</reactionhint>';
}
sub insert_organichint {
return '
<organichint>
</organichint>';
}
sub insert_stringhint {
return '
<stringhint>
</stringhint>';
}
sub insert_formulahint {
return '
<formulahint>
</formulahint>';
}
sub insert_radiobuttonhint {
return '
<radiobuttonhint>
</radiobuttonhint>';
}
sub insert_optionhint {
return '
<optionhint>
</optionhint>';
}
sub insert_startouttext {
return "<startouttext /><endouttext />";
}
sub insert_script {
return "\n<script type=\"loncapa/perl\"></script>";
}
sub js_change_detection {
my $unsaved=&mt("There are unsaved changes");
return (<<SCRIPT);
<script type="text/javascript">
// <![CDATA[
var clean = true;
var is_submit = false;
var still_ask = false;
function compareForm(event_) {
if (!event_ && window.event) {
event_ = window.event;
}
if ((!is_submit || (is_submit && still_ask)) && !clean) {
still_ask = false;
is_submit = false;
event_.returnValue = "$unsaved";
return "$unsaved";
}
}
function unClean() {
clean=false;
}
window.onbeforeunload = compareForm;
// ]]>
</script>
SCRIPT
}
sub form_change_detection {
return ' onsubmit="is_submit=true;" ';
}
sub element_change_detection {
return ' onchange="unClean();" ';
}
sub submit_ask_anyway {
my ($extra_action) = @_;
my $resource = &Apache::loncommon::escape_single($env{'request.ambiguous'});
return ' onclick="saveScrollPosition(\''.$resource.'\');still_ask=true;'.$extra_action.';" ';
}
sub submit_dont_ask {
my ($extra_action) = @_;
my $resource = &Apache::loncommon::escape_single($env{'request.ambiguous'});
return ' onclick="saveScrollPosition(\''.$resource.'\');is_submit=true;'.$extra_action.';" ';
}
sub js_update_linknum {
return (<<SCRIPT);
<script type="text/javascript">
// <![CDATA[
function updateNumber(name,index,caller,textprompt) {
var pickitem = document.getElementById(name+'_'+index);
var picknumtext = document.getElementById(name+'_numtext_'+index);
if (pickitem.checked) {
var showval = '';
if (pickitem.value != 'nochoice') {
showval = pickitem.value;
}
var picknum=prompt(textprompt,showval);
if (picknum == '' || picknum == null) {
if (caller == 'check') {
pickitem.checked=false;
pickitem.value='nochoice';
}
} else {
picknum.toString();
var regexdigit=/^\\d+\$/;
if (regexdigit.test(picknum)) {
pickitem.value = picknum;
picknumtext.innerHTML = ' <a href="javascript:updateNumber(\\''+name+'\\',\\''+index+'\\',\\'link\\',\\''+textprompt+'\\');">'+picknum+'</a>';
} else {
if (caller == 'check') {
pickitem.checked=false;
pickitem.value='nochoice';
}
return;
}
}
} else {
pickitem.value = '';
picknumtext.innerHTML = '';
}
}
// ]]>
</script>
SCRIPT
}
sub textarea_sizes {
my ($data)=@_;
my $count=0;
my $maxlength=-1;
foreach (split ("\n", $$data)) {
$count+=int(length($_)/79);
$count++;
if (length($_) > $maxlength) { $maxlength = length($_); }
}
my $rows = $count;
my $cols = $maxlength;
return ($rows,$cols);
}
sub editline {
my ($tag,$data,$description,$size)=@_;
$data=&HTML::Entities::encode($data,'<>&"');
if ($description) { $description=$description."<br />"; }
my $change_code = &element_change_detection();
my $result = <<"END";
$description
<input type="text" name="homework_edit_$Apache::lonxml::curdepth"
value="$data" size="$size" $change_code />
END
return $result;
}
sub editfield {
my ($tag,$data,$description,$minwidth,$minheight,$usehtmlarea)=@_;
my ($rows,$cols)=&textarea_sizes(\$data);
my $textareaclass;
if (&Apache::lonhtmlcommon::htmlareabrowser() && $usehtmlarea) {
$rows+=7; # make room for HTMLarea
$minheight+=7; # make room for HTMLarea
$textareaclass = ' class="LC_richDefaultOff"';
}
if ($cols > 80) { $cols = 80; }
if ($cols < $minwidth ) { $cols = $minwidth; }
if ($rows < $minheight) { $rows = $minheight; }
if ($description) { $description='<br />'.&mt($description).'<br />'; }
# remove typesetting whitespace from between data and the end tag
# to make the edit look prettier
$data =~ s/\n?[ \t]*$//;
return $description."\n".'<textarea style="width:99%" rows="'.$rows.
'" cols="'.$cols.'" name="homework_edit_'.
$Apache::lonxml::curdepth.'" id="homework_edit_'.
$Apache::lonxml::curdepth.'" '.&element_change_detection().
$textareaclass.'>'.
&HTML::Entities::encode($data,'<>&"').'</textarea>'.
($usehtmlarea?'<br />'.&Apache::lonhtmlcommon::spelllink('lonhomework',
'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
}
sub modifiedfield {
my ($endtag,$parser) = @_;
my $result;
$result=$env{"form.homework_edit_$Apache::lonxml::curdepth"};
my $bodytext=&Apache::lonxml::get_all_text($endtag,$parser);
# textareas throw away intial \n
if ($bodytext=~/^\n/) {
$result="\n".$result;
}
# if there is typesetting whitespace from between the data and the end tag
# restore to keep the source looking pretty
if ($bodytext =~ /(\n?[ \t]*)$/) {
$result .= $1;
}
return $result;
}
# Returns a 1 if the token has been modified and you should rebuild the tag
# side-effects, will modify the $token if new values are found
sub get_new_args {
my ($token,$parstack,$safeeval,@args)=@_;
my $rebuild=0;
foreach my $arg (@args) {
#just want the string that it was set to
my $value=$token->[2]->{$arg};
my $element=&html_element_name($arg);
my $newvalue=$env{"form.$element"};
&Apache::lonxml::debug("for:$arg: cur is :$value: new is :$newvalue:");
if (defined($newvalue) && $value ne $newvalue) {
if (ref($newvalue) eq 'ARRAY') {
$token->[2]->{$arg}=join(',',@$newvalue);
} else {
$token->[2]->{$arg}=$newvalue;
}
$rebuild=1;
# add new attributes to the of the attribute seq
if (!grep { $arg eq $_ } (@{ $token->[3] })) {
push(@{ $token->[3] },$arg);
}
} elsif (!defined($newvalue) && defined($value)) {
delete($token->[2]->{$arg});
$rebuild=1;
}
}
return $rebuild;
}
# looks for /> on start tags
sub rebuild_tag {
my ($token) = @_;
my $result;
if ($token->[0] eq 'S') {
$result = '<'.$token->[1];
foreach my $attribute (@{ $token->[3] }) {
my $value = $token->[2]{$attribute};
next if ($value eq '');
$value =~s/^\s+|\s+$//g;
$value =~s/\"//g;
&Apache::lonxml::debug("setting :$attribute: to :$value:");
$result.=' '.$attribute.'="'.$value.'"';
}
if ($token->[4] =~ m:/>$:) {
$result.=' />';
} else {
$result.='>';
}
} elsif ( $token->[0] eq 'E' ) {
$result = '</'.$token->[1].'>';
}
return $result;
}
sub html_element_name {
my ($name) = @_;
return $name.'_'.$Apache::lonxml::curdepth;
}
sub hidden_arg {
my ($name,$token) = @_;
my $result;
my $arg=$token->[2]{$name};
$result='<input name="'.&html_element_name($name).
'" type="hidden" value="'.$arg.'" />';
return $result;
}
sub checked_arg {
my ($description,$name,$list,$token,$onclick,$useid) = @_;
my $result;
my $optionlist="";
my $allselected=$token->[2]{$name};
$result=&mt($description);
foreach my $option (@$list) {
my ($value,$text);
if ( ref($option) eq 'ARRAY') {
$value='value="'.$$option[0].'"';
$text=&mt($$option[1]);
$option=$$option[0];
} else {
$text=&mt($option);
$value='value="'.$option.'"';
}
$result.=' <span class="LC_edit_opt"><label><input type="checkbox" '.$value.' name="'.
&html_element_name($name).'"';
foreach my $selected (split(/,/,$allselected)) {
if ( $selected eq $option ) {
$result.=' checked="checked" ';
last;
}
}
if ($useid) {
$result .= ' id="'.&html_element_name($name).'" ';
}
$result.=&element_change_detection().$onclick.' />'.$text.'</label></span>'."\n";
}
return $result;
}
sub text_arg {
my ($description,$name,$token,$size, $class) = @_;
my $result;
if (!defined $size) { $size=20; }
my $arg=$token->[2]{$name};
$result=&mt($description).' <input name="'.&html_element_name($name).
'" type="text" value="'.$arg.'" size="'.$size.'" ';
if (defined $class) {
$result .= 'class="' . $class . '" ';
}
$result .= &element_change_detection().'/>';
return ' <span class="LC_edit_opt">'.$result.'</span>';
}
sub select_arg {
my ($description,$name,$list,$token) = @_;
my $result;
my $optionlist="";
my $selected=$token->[2]{$name};
if (ref($list) eq 'ARRAY') {
foreach my $option (@{$list}) {
my ($text,$value);
if (ref($option) eq 'ARRAY') {
$value='value="'.&HTML::Entities::encode($option->[0]).'"';
$text=$option->[1];
$option=$option->[0];
} else {
$text=$option;
$value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
}
if ( $selected eq $option ) {
$optionlist.="<option $value selected=\"selected\">".&mt($text)."</option>\n";
} else {
$optionlist.="<option $value >".&mt($text)."</option>\n";
}
}
}
$result.=' <span class="LC_edit_opt">'.&mt($description).' <select name="'.
&html_element_name($name).'" '.&element_change_detection().' >
'.$optionlist.'
</select></span>';
return $result;
}
sub select_or_text_arg {
my ($description,$name,$list,$token,$size) = @_;
my $result;
my $optionlist="";
my $found=0;
my $selected=$token->[2]{$name};
if (ref($list) eq 'ARRAY') {
foreach my $option (@{$list}) {
my ($text,$value);
if (ref($option) eq 'ARRAY') {
$value='value="'.&HTML::Entities::encode($option->[0]).'"';
$text=$option->[1];
$option=$option->[0];
} else {
$text=$option;
$value='value="'.&HTML::Entities::encode($option,'\'"&<>').'"';
}
if ( $selected eq $option ) {
$optionlist.="<option $value selected=\"selected\">$text</option>\n";
$found=1;
} else {
$optionlist.="<option $value>$text</option>\n";
}
}
}
$optionlist.="<option value=\"TYPEDINVALUE\"".
((!$found)?' selected="selected"':'').
">".&mt('Type-in value')."</option>\n";
#
my $change_code=&element_change_detection();
my $element=&html_element_name($name);
my $selectelement='select_list_'.$element;
my $typeinelement='type_in_'.$element;
my $typeinvalue=($found?'':$selected);
#
my $hiddenvalue='this.form.'.$element.'.value';
my $selectedindex='this.form.'.$selectelement.'.selectedIndex';
my $selectedvalue='this.form.'.$selectelement.
'.options['.$selectedindex.'].value';
my $typedinvalue='this.form.'.$typeinelement.'.value';
my $selecttypeinindex='this.form.'.$selectelement.'.options.length';
$description=&mt($description);
#
return (<<ENDSELECTORTYPE);
<span class="LC_edit_opt">
$description
<select name="$selectelement"
onchange="if ($selectedvalue!='TYPEDINVALUE') { $hiddenvalue=$selectedvalue; $typedinvalue=''; }" >
$optionlist
</select>
<input type="text" size="$size" name="$typeinelement"
value="$typeinvalue"
onchange="$hiddenvalue=$typedinvalue;"
onfocus="$selectedindex=$selecttypeinindex-1;" />
<input type="hidden" name="$element" value="$selected" $change_code />
</span>
ENDSELECTORTYPE
}
#----------------------------------------------------- image coordinates
# single image coordinates, x, y
sub entercoords {
my ($idx,$idy,$mode,$width,$height) = @_;
unless ($Apache::edit::bgimgsrc) { return ''; }
if ($idx) { $idx.='_'; }
if ($idy) { $idy.='_'; }
my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
my $form = 'lonhomework';
my $element;
if (! defined($mode) || $mode eq 'attribute') {
$element = &escape("$Apache::lonxml::curdepth");
} elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
$element = &escape('homework_edit_'.
$Apache::lonxml::curdepth);
}
my $id=$Apache::lonxml::curdepth;
my %data=("imagechoice.$id.type" =>'point',
"imagechoice.$id.formname" =>$form,
"imagechoice.$id.formx" =>"$idx$element",
"imagechoice.$id.formy" =>"$idy$element",
"imagechoice.$id.file" =>$bgfile,
"imagechoice.$id.formcoord" =>$element);
if ($height) {
$data{"imagechoice.$id.formheight"}=$height.'_'.
$Apache::edit::bgimgsrccurdepth;
}
if ($width) {
$data{"imagechoice.$id.formwidth"}=$width.'_'.
$Apache::edit::bgimgsrccurdepth;
}
&Apache::lonnet::appenv(\%data);
my $text="Click Coordinates";
my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
return $result;
}
# coordinates (x1,y1)-(x2,y2)...
# mode can be either box, or polygon
sub entercoord {
my ($idx,$mode,$width,$height,$type) = @_;
unless ($Apache::edit::bgimgsrc) { return ''; }
my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
my $form = 'lonhomework';
my $element;
if (! defined($mode) || $mode eq 'attribute') {
$element = &escape("$idx\_$Apache::lonxml::curdepth");
} elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
$element = &escape('homework_edit_'.
$Apache::lonxml::curdepth);
}
my $id=$Apache::lonxml::curdepth;
my %data=("imagechoice.$id.type" =>$type,
"imagechoice.$id.formname" =>$form,
"imagechoice.$id.file" =>$bgfile,
"imagechoice.$id.formcoord" =>$element);
if ($height) {
$data{"imagechoice.$id.formheight"}=$height.'_'.
$Apache::edit::bgimgsrccurdepth;
}
if ($width) {
$data{"imagechoice.$id.formwidth"}=$width.'_'.
$Apache::edit::bgimgsrccurdepth;
}
&Apache::lonnet::appenv(\%data);
my $text="Enter Coordinates";
if ($type eq 'polygon') { $text='Create Polygon Data'; }
my $result='<a href="/adm/imagechoice?token='.$id.'" target="imagechoice">'.$text.'</a>';
return $result;
}
sub deletecoorddata {
&Apache::lonnet::delenv('imagechoice.');
}
#----------------------------------------------------- browse
sub browse {
# insert a link to call up the filesystem browser (lonindexer)
my ($id, $mode, $titleid, $only) = @_;
my $form = 'lonhomework';
my $element;
if (! defined($mode) || $mode eq 'attribute') {
$element = &escape("$id\_$Apache::lonxml::curdepth");
} elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
$element = &escape('homework_edit_'.
$Apache::lonxml::curdepth);
}
my $titleelement;
if ($titleid) {
$titleelement=",'$only','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
} else {
$titleelement=",'$only'";
}
my $result = <<"ENDBUTTON";
<a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
ENDBUTTON
return $result;
}
#----------------------------------------------------- browse
sub search {
# insert a link to call up the filesystem browser (lonindexer)
my ($id, $mode, $titleid) = @_;
my $form = 'lonhomework';
my $element;
if (! defined($mode) || $mode eq 'attribute') {
$element = &escape("$id\_$Apache::lonxml::curdepth");
} elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
$element = &escape('homework_edit_'.
$Apache::lonxml::curdepth);
}
my $titleelement;
if ($titleid) {
$titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
}
my $result = <<"ENDBUTTON";
<a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>
ENDBUTTON
return $result;
}
1;
__END__
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