--- loncom/homework/edit.pm 2005/12/01 18:46:31 1.97
+++ loncom/homework/edit.pm 2006/05/30 12:45:36 1.102
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# edit mode helpers
#
-# $Id: edit.pm,v 1.97 2005/12/01 18:46:31 albertel Exp $
+# $Id: edit.pm,v 1.102 2006/05/30 12:45:36 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -32,6 +32,9 @@ use strict;
use Apache::lonnet;
use HTML::Entities();
use Apache::lonlocal;
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+
# Global Vars
# default list of colors to use in editing
@@ -498,6 +501,44 @@ sub insert_script {
return "\n<script type=\"loncapa/perl\"></script>";
}
+sub js_change_detection {
+ my $unsaved=&mt("There are unsaved changes");
+ return (<<SCRIPT);
+<script type="text/javascript">
+var clean = true;
+var is_submit = false;
+var still_ask = false;
+function compareForm(event_) {
+ if (!event_ && window.event) {
+ event_ = window.event;
+ }
+ if ((!is_submit || (is_submit && still_ask)) && !clean) {
+ still_ask = false;
+ is_submit = false;
+ event_.returnValue = "$unsaved";
+ return "$unsaved";
+ }
+}
+function unClean() {
+ clean=false;
+}
+window.onbeforeunload = compareForm;
+</script>
+SCRIPT
+}
+
+sub form_change_detection {
+ return ' onsubmit="is_submit=true;" ';
+}
+
+sub element_change_detection {
+ return ' onchange="unClean();" ';
+}
+
+sub submit_ask_anyway {
+ return ' onclick="still_ask=true;" ';
+}
+
sub textarea_sizes {
my ($data)=@_;
my $count=0;
@@ -516,10 +557,11 @@ sub editline {
my ($tag,$data,$description,$size)=@_;
$data=&HTML::Entities::encode($data,'<>&"');
if ($description) { $description="<br />".$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" />
+ value="$data" size="$size" $change_code />
END
return $result;
}
@@ -538,13 +580,13 @@ sub editfield {
if ($rows < $minheight) { $rows = $minheight; }
if ($description) { $description="<br />".$description."<br />"; }
if ($usehtmlarea) {
- push @Apache::lonxml::htmlareafields,'homework_edit_'.
- $Apache::lonxml::curdepth;
+ &Apache::lonhtmlcommon::add_htmlareafields('homework_edit_'.
+ $Apache::lonxml::curdepth);
}
return $description."\n".' <textarea style="width:100%" rows="'.$rows.
'" cols="'.$cols.'" name="homework_edit_'.
$Apache::lonxml::curdepth.'" id="homework_edit_'.
- $Apache::lonxml::curdepth.'">'.
+ $Apache::lonxml::curdepth.'" '.&element_change_detection().'>'.
&HTML::Entities::encode($data,'<>&"').'</textarea>'.
($usehtmlarea?&Apache::lonhtmlcommon::spelllink('lonhomework',
'homework_edit_'.$Apache::lonxml::curdepth):'')."\n";
@@ -644,7 +686,7 @@ sub checked_arg {
$text=$option;
$value='value="'.$option.'"';
}
- $result.="<nobr><input type='checkbox' $value name='".
+ $result.="<nobr><label><input type='checkbox' $value name='".
&html_element_name($name)."'";
foreach my $selected (split(/,/,$allselected)) {
if ( $selected eq $option ) {
@@ -652,7 +694,7 @@ sub checked_arg {
last;
}
}
- $result.=" />$text</nobr>\n";
+ $result.=&element_change_detection()." />$text</label></nobr>\n";
}
return $result;
}
@@ -663,7 +705,8 @@ sub text_arg {
if (!defined $size) { $size=20; }
my $arg=$token->[2]{$name};
$result=&mt($description).' <input name="'.&html_element_name($name).
- '" type="text" value="'.$arg.'" size="'.$size.'" />';
+ '" type="text" value="'.$arg.'" size="'.$size.'" '.
+ &element_change_detection().'/>';
return '<nobr>'.$result.'</nobr>';
}
@@ -689,7 +732,7 @@ sub select_arg {
}
}
$result.='<nobr>'.$description.' <select name="'.
- &html_element_name($name).'">
+ &html_element_name($name).'" '.&element_change_detection().' >
'.$optionlist.'
</select></nobr>';
return $result;
@@ -722,6 +765,7 @@ sub select_or_text_arg {
((!$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;
@@ -746,7 +790,7 @@ $optionlist
value="$typeinvalue"
onChange="$hiddenvalue=$typedinvalue;"
onFocus="$selectedindex=$selecttypeinindex-1;" />
-<input type="hidden" name="$element" value="$selected" />
+<input type="hidden" name="$element" value="$selected" $change_code />
</nobr>
ENDSELECTORTYPE
}
@@ -758,13 +802,13 @@ sub entercoords {
unless ($Apache::edit::bgimgsrc) { return ''; }
if ($idx) { $idx.='_'; }
if ($idy) { $idy.='_'; }
- my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
+ my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
my $form = 'lonhomework';
my $element;
if (! defined($mode) || $mode eq 'attribute') {
- $element = &Apache::lonnet::escape("$Apache::lonxml::curdepth");
+ $element = &escape("$Apache::lonxml::curdepth");
} elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
- $element = &Apache::lonnet::escape('homework_edit_'.
+ $element = &escape('homework_edit_'.
$Apache::lonxml::curdepth);
}
my $id=$Apache::lonxml::curdepth;
@@ -793,13 +837,13 @@ sub entercoords {
sub entercoord {
my ($idx,$mode,$width,$height,$type) = @_;
unless ($Apache::edit::bgimgsrc) { return ''; }
- my $bgfile=&Apache::lonnet::escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
+ my $bgfile=&escape(&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$Apache::edit::bgimgsrc));
my $form = 'lonhomework';
my $element;
if (! defined($mode) || $mode eq 'attribute') {
- $element = &Apache::lonnet::escape("$idx\_$Apache::lonxml::curdepth");
+ $element = &escape("$idx\_$Apache::lonxml::curdepth");
} elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
- $element = &Apache::lonnet::escape('homework_edit_'.
+ $element = &escape('homework_edit_'.
$Apache::lonxml::curdepth);
}
my $id=$Apache::lonxml::curdepth;
@@ -833,14 +877,14 @@ sub browse {
my $form = 'lonhomework';
my $element;
if (! defined($mode) || $mode eq 'attribute') {
- $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
+ $element = &escape("$id\_$Apache::lonxml::curdepth");
} elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
- $element = &Apache::lonnet::escape('homework_edit_'.
+ $element = &escape('homework_edit_'.
$Apache::lonxml::curdepth);
}
my $titleelement;
if ($titleid) {
- $titleelement=",'','','".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
+ $titleelement=",'','','".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
}
my $result = <<"ENDBUTTON";
<a href=\"javascript:openbrowser('$form','$element'$titleelement)\"\>Select</a>
@@ -855,14 +899,14 @@ sub search {
my $form = 'lonhomework';
my $element;
if (! defined($mode) || $mode eq 'attribute') {
- $element = &Apache::lonnet::escape("$id\_$Apache::lonxml::curdepth");
+ $element = &escape("$id\_$Apache::lonxml::curdepth");
} elsif ($mode eq 'textnode') { # for data between <tag> ... </tag>
- $element = &Apache::lonnet::escape('homework_edit_'.
+ $element = &escape('homework_edit_'.
$Apache::lonxml::curdepth);
}
my $titleelement;
if ($titleid) {
- $titleelement=",'".&Apache::lonnet::escape("$titleid\_$Apache::lonxml::curdepth")."'";
+ $titleelement=",'".&escape("$titleid\_$Apache::lonxml::curdepth")."'";
}
my $result = <<"ENDBUTTON";
<a href=\"javascript:opensearcher('$form','$element'$titleelement)\"\>Search</a>