--- loncom/homework/lonhomework.pm 2000/11/21 18:39:35 1.16
+++ loncom/homework/lonhomework.pm 2001/08/06 18:24:37 1.51
@@ -1,5 +1,17 @@
-# The LON-CAPA Homework handler
-# Guy Albertelli
+# The LON-CAPA homework handler
+#
+# Handles homework.
+#
+# YEAR=2000
+# 7/25,8/2,8/7,8/8,8/11,9/14,9/19,10/2,10/5,10/11,11/7,11/21 Guy Albertelli
+# 11/30 Gerd Kortemeyer
+# 12/4,12/8,12/12,12/15,12/19,12/21 Guy Albertelli
+# YEAR=2001
+# 1/6,1/8,1/9,1/10,1/11,1/12,1/15,1/25,2/7,2/13,2/19,4/16,4/26 Guy Albertelli
+# 5/4,5/13,5/21 Guy Albertelli
+# 6/1 Gerd Kortemeyer
+# 6/5,6/12,6/26,7/2,7/18 Guy Albertelli
+# 8/6 Scott Harrison
package Apache::lonhomework;
use strict;
@@ -9,115 +21,407 @@ use Apache::lonnet;
use Apache::inputtags;
use Apache::structuretags;
use Apache::response;
+use Apache::hint;
+use Apache::outputtags;
+use Apache::Constants qw(:common);
+#use Time::HiRes qw( gettimeofday tv_interval );
+
+# ======================================================================= BEGIN
+sub BEGIN {
+ &Apache::lonxml::register_insert();
+}
+# =============================================== Get target (returns an array)
+sub get_target {
+ if ( $ENV{'request.state'} eq "published") {
+ if ( defined $ENV{'form.submitted'}) {
+ return ('grade','web');
+ } else {
+ return ('web');
+ }
+ } elsif ($ENV{'request.state'} eq "construct") {
+ if ( defined $ENV{'form.preview'}) {
+ if ( defined $ENV{'form.submitted'}) {
+ return ('grade','web');
+ } else {
+ return ('web');
+ }
+ } else {
+ if ( $ENV{'form.problemmode'} eq 'View' ) {
+ if ( defined $ENV{'form.submitted'}) {
+ return ('grade','web');
+ } else {
+ return ('web');
+ }
+ } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
+ if ( $ENV{'form.submitted'} eq 'edit' ) {
+ return ('modified','edit');
+ } else {
+ return ('edit');
+ }
+ } else {
+ return ('web');
+ }
+ }
+ }
+ return ();
+}
-sub handler {
- my $request=shift;
-
- my $target=&get_target();
- $Apache::lonxml::debug=1;
- if ($ENV{'browser.mathml'}) {
- $request->content_type('text/xml');
- } else {
- $request->content_type('text/html');
- }
- $request->send_http_header;
- return 'OK' if $request->header_only;
+# ===================================== Set up variables (return scalar string)
+sub setup_vars {
+ my ($target) = @_;
+ return ';'
+# return ';$external::target='.$target.';';
+}
- &Apache::lonhomework::send_header($request);
- my $file = &Apache::lonnet::filelocation("",$request->uri);
- my %mystyle;
- my $result = '';
- &Apache::inputtags::initialize_inputtags;
- %Apache::lonhomework::results=();
- %Apache::lonhomework::history=&Apache::lonnet::restore;
- #ignore error conditions
- my ($temp)=keys %Apache::lonhomework::history ;
- if ($temp =~ m/^error:.*/) { %Apache::lonhomework::history=(); }
-
- my $resultkey;
- foreach $resultkey (sort keys %Apache::lonhomework::history) {
- &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::history{$resultkey}");
- }
- &Apache::lonxml::debug("\n
restored values^\n");
+# ================================================================= Send header
+sub send_header {
+ my ($request) = @_;
+ $request->print(&Apache::lontexconvert::header());
+# $request->print('
');
+ $request->print(&Apache::lontexconvert::footer());
+}
- foreach $resultkey (sort keys %Apache::lonhomework::results) {
- &Apache::lonxml::debug("$resultkey ---- $Apache::lonhomework::results{$resultkey}");
- }
- &Apache::lonxml::debug("\n
storing values^\n");
+$Apache::lonxml::browse = '';
- &Apache::lonhomework::send_footer($request);
- ($temp) = keys %Apache::lonhomework::results;
- if ( $temp ne '' ) {
- &Apache::lonxml::debug("Store return message:".&Apache::lonnet::cstore(%Apache::lonhomework::results));
- }
- return 'OK';
+# =============================================== Check date (returns an array)
+sub check_date {
+ my ($id) = @_;
+ my $date ='';
+ my $status = '';
+ my $datemsg = '';
+ my $lastdate = '';
+ my $temp;
+ my $type;
+ my $passed;
+ &Apache::lonxml::debug("checking for part :$id:");
+ foreach $temp ("opendate","duedate","answerdate") {
+ $lastdate = $date;
+ $date = &Apache::lonnet::EXT("resource.$id.$temp");
+ &Apache::lonxml::debug("found :$date: for :$temp:");
+ if ($date eq '') {
+ $date = "an unknown date"; $passed = 0;
+ } elsif ($date eq 'con_lost') {
+ $date = "an indeterminate date"; $passed = 0;
+ } else {
+ if (time < $date) { $passed = 0; } else { $passed = 1; }
+ $date = localtime $date;
+ }
+ if (!$passed) { $type = $temp; last; }
+ }
+ &Apache::lonxml::debug("have :$type:$passed:");
+ if ($passed) {
+ $status = 'SHOW_ANSWER';
+ $datemsg = $date;
+ } elsif ($type eq 'opendate') {
+ $status = 'CLOSED';
+ $datemsg = "will open on $date";
+ } elsif ($type eq 'duedate') {
+ $status = 'CAN_ANSWER';
+ $datemsg = "is due at $date";
+ } elsif ($type eq 'answerdate') {
+ $status = 'CLOSED';
+ $datemsg = "was due on $lastdate, and answers will be available on ".
+ "$date";
+ }
+ if ($status eq 'CAN_ANSWER') {
+ #check #tries
+ my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
+ my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
+ if ( $tries eq '' ) { $tries = '0'; }
+ if ( $maxtries eq '' ) { $maxtries = '2'; }
+ if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
+ }
+ &Apache::lonxml::debug("sending back :$status:$datemsg:");
+ if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
+ &Apache::lonxml::debug("should be allowed to browse a resource when ".
+ "closed");
+ $status = 'CAN_ANSWER';
+ $datemsg = 'is closed but you are allowed to view it';
+ }
+ if ($ENV{'request.state'} eq "construct") {
+ &Apache::lonxml::debug("in construction ignoring dates");
+ $status = 'CAN_ANSWER';
+ $datemsg = 'is in under construction';
+ }
+ return ($status,$datemsg);
}
-sub get_target {
- if ( $ENV{'request.state'} eq "published") {
- return 'web';
- } elsif ($ENV{'request.state'} eq "construct") {
- if ( defined $ENV{'form.preview'}) {
- return 'web';
+# ================================================================== Shows hash
+sub showhash {
+ my (%hash) = @_;
+ my $resultkey;
+ foreach $resultkey (sort keys %hash) {
+ &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}");
+ }
+ &Apache::lonxml::debug("\n
restored values^\n");
+ return '';
+}
+
+# =========================================================== Setup permissions
+sub setuppermissions {
+ $Apache::lonhomework::browse = &Apache::lonnet::allowed('bre',
+ $ENV{'request.filename'});
+ $Apache::lonhomework::viewgrades = &Apache::lonnet::allowed('vgr',
+ $ENV{'request.course.id'});
+ return '';
+}
+
+# ================================================================ Setup header
+sub setupheader {
+ my $request = $_[0];
+ if ($ENV{'browser.mathml'}) {
+ $request->content_type('text/xml');
} else {
- return 'edit';
+ $request->content_type('text/html');
}
- }
+ $request->send_http_header;
+ return OK if $request->header_only;
+ return '';
}
-sub setup_vars {
- my ($target) = @_;
- return ';'
-# return ';$external::target='.$target.';';
+# ========================================================= Handle save or undo
+sub handle_save_or_undo {
+ my ($request,$problem,$result) = @_;
+ my $fileout = &Apache::lonnet::filelocation("",$request->uri);
+ my $filesave = $fileout.".bak";
+ if ($ENV{'form.Undo'} eq 'undo') {
+ if (copy($filesave,$fileout)) {
+ $request->print("Undid changes, Copied $filesave to $fileout".
+ "
");
+ } else {
+ $request->print("Unable to ".
+ "undo, unable to copy $filesave to $fileout
");
+ }
+ } else {
+ my $fs=Apache::File->new(">$filesave");
+ if (defined($fs)) {
+ print $fs $$problem;
+ $request->print("Making Backup to $filesave
");
+ } else {
+ $request->print("Unable to ".
+ "make backup $filesave");
+ }
+ my $fh=Apache::File->new(">$fileout");
+ if (defined($fh)) {
+ print $fh $$result;
+ $request->print("Saving Modifications to $fileout
");
+ } else {
+ $request->print("Unable to ".
+ "write to $fileout");
+ }
+ }
}
-sub send_header {
- my ($request)= @_;
- $request->print(&Apache::lontexconvert::header());
- $ENV{'request.uri'}=$request->uri;
-# $request->print('