version 1.3, 2000/08/16 18:32:58
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version 1.49, 2001/07/19 21:26:22
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# <script> definiton |
# definition of tags that give a structure to a document |
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# 2/19 Guy |
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# 6/26/2001 fixed extra web display at end of <web></web> tags |
package Apache::structuretags; |
package Apache::structuretags; |
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use strict; |
use strict; |
use Apache::lonnet; |
use Apache::lonnet; |
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sub BEGIN { |
sub BEGIN { |
&Apache::lonxml::register('Apache::structuretags',('block')); |
&Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext')); |
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# &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate')) |
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} |
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sub start_web { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]); |
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if ($target eq 'web') { |
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return $bodytext; |
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} |
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return ''; |
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} |
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sub end_web { |
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return ''; |
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} |
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sub start_tex { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]); |
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if ($target eq 'tex') { |
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return $bodytext |
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} |
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return ''; |
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} |
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sub end_tex { |
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return ''; |
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} |
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sub page_start { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,$parser,$safeeval); |
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my $head_tag_start='<head>'.&Apache::lonxml::registerurl(); |
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my $body_tag_start='<body onLoad="'.&Apache::lonxml::loadevents().'" '. |
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'onUnload="'.&Apache::lonxml::unloadevents().'" '. |
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'bgcolor="#FFFFFF">'; |
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return ($result,$head_tag_start,$body_tag_start); |
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} |
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sub start_problem { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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#intialize globals |
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$Apache::inputtags::part='0'; |
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@Apache::inputtags::responselist = (); |
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$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type'); |
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&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:"); |
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if ($Apache::lonhomework::type eq '') { |
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$Apache::lonhomework::type='homework'; |
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} |
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#adeed vars to the scripting enviroment |
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my $expression='$external::part='.$Apache::inputtags::part.';'; |
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&Apache::run::run($expression,$safeeval); |
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my $status; |
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my $datemsg; |
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#should get back a <html> or the neccesary stuff to start XML/MathML |
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my ($result,$head_tag_start,$body_tag_start)= |
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&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval); |
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if ($target eq 'web' || $target eq 'grade') { |
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($status,$datemsg) = &Apache::lonhomework::check_date('0'); |
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push (@Apache::inputtags::status,$status); |
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my $expression='$external::datestatus="'.$status.'";'; |
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$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";'; |
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&Apache::run::run($expression,$safeeval); |
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if ( $status eq 'CLOSED' ) { |
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my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]); |
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if ( $target eq "web" ) { |
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$result.= $head_tag_start.'</head>'; |
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return $result . $body_tag_start . |
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" <br />Problem is not open to be viewed. The problem $datemsg<br />"; |
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} |
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} |
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} |
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if ($target eq 'web') { |
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my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval); |
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if ($name eq '') { |
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$name=&Apache::lonnet::EXT('resource.title'); |
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if ($name eq 'con_lost') { $name = ''; } |
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} |
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$Apache::lonhomework::name=$name; |
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if ($status eq 'CAN_ANSWER') { |
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# create a page header and exit |
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$result.="$head_tag_start<title>$name</title></head>\n |
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$body_tag_start\n |
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<form name=\"lonhomework\" method=\"POST\" action=\"".$ENV{'request.uri'}."\">". |
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'<input type="hidden" name="submitted" value="yes" />'; |
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if ($ENV{'request.state'} eq "construct") { |
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$result.='<input type="hidden" name="problemmode" value="View" /> |
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<input type="submit" name="problemmode" value="Edit" /><hr />'; |
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} |
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return $result; |
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} elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER' || $status eq 'CLOSED') { |
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return $result.$head_tag_start."<title>$name</title></head>\n$body_tag_start\n"; |
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} |
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} |
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if ($target eq 'edit') { |
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$result.=$head_tag_start."</head>".$body_tag_start. |
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'<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'"> |
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<input type="hidden" name="submitted" value="edit" /> |
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<input type="hidden" name="problemmode" value="Edit" /> |
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<input type="submit" name="problemmode" value="View" /> |
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<input type="submit" name="Undo" value="undo" /> <hr /> |
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<input type="submit" name="submit" value="Submit Changes" /><br /> |
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'; |
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my $temp=&Apache::edit::insertlist($target,$token); |
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$result.=$temp; |
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return $result; |
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} |
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if ($target eq 'modified') { |
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$result=$token->[4]; |
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$result.=&Apache::edit::handle_insert(); |
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return $result; |
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} |
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return ''; |
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} |
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sub end_problem { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $result=''; |
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my $status=$Apache::inputtags::status['-1']; |
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if ($target eq 'grade' || $target eq 'web' ) { |
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if ( $target eq 'grade' && $Apache::inputtags::part eq '0' && |
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$status eq 'CAN_ANSWER') { |
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# if part is zero, no <part>s existed, so we need to the grading |
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&Apache::inputtags::grade; |
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} elsif ($Apache::inputtags::part eq '0') { |
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# if part is zero, no <part>s existed, so we need show the current |
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# grading status |
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$result.= &Apache::inputtags::gradestatus($Apache::inputtags::part); |
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} |
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if ($target eq 'web') { |
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if ($status eq 'CAN_ANSWER') { |
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$result.="</form></body>\n"; |
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} elsif ($status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') { |
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$result.="</body>\n"; |
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} |
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} |
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} |
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if ($target eq 'meta') { |
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if ($Apache::inputtags::part eq '0') { |
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$result=&Apache::response::mandatory_part_meta; |
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} |
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} |
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if ($target eq 'edit') { |
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&Apache::lonxml::debug("in end_problem with $target, edit"); |
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$result='<br /><input type="submit" name="submit" value="Submit Changes" />'; |
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} |
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return $result; |
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} |
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sub start_library { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my ($result,$head_tag_start,$body_tag_start)= |
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&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval); |
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if ($target eq 'edit') { |
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$result.=$head_tag_start."</head>".$body_tag_start. |
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'<form name="lonhomework" method="POST" action="'.$ENV{'request.uri'}.'"> |
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<input type="hidden" name="submitted" value="edit" /> |
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<input type="hidden" name="problemmode" value="Edit" /> |
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<input type="submit" name="problemmode" value="View" /> |
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<input type="submit" name="Undo" value="undo" /> <hr /> |
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'; |
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my $temp=&Apache::edit::insertlist($target,$token); |
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$result.=$temp; |
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return $result; |
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} |
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if ($target eq 'modified') { |
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$result=$token->[4]; |
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$result.=&Apache::edit::handle_insert(); |
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return $result; |
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} |
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return ''; |
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} |
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sub end_library { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $result=''; |
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if ($target eq 'edit') { |
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$result='<br /><input type="submit" name="submit" value="Submit Changes" />'; |
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} |
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return $result; |
} |
} |
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sub start_block { |
sub start_block { |
my ($target,$token,$parstack,$parser,$safeeval)=@_; |
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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if ($target eq 'web' || $target eq 'grade') { |
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my $code = @$parstack[$#$parstack]; |
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$code =~ s/\"//g; |
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$code .=';return $condition;'; |
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# print "<br />$code<br />"; |
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my $result = &Apache::run::run($code,$safeeval); |
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&Apache::lonxml::debug("block :$code: returned :$result:"); |
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if ( ! $result ) { |
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my $skip=&Apache::lonxml::get_all_text("/block",$$parser[$#$parser]); |
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&Apache::lonxml::debug("skipping ahead :$skip: $$parser[$#$parser]"); |
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} |
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} |
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return ""; |
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} |
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sub end_block { |
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return ''; |
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} |
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sub start_while { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $code = @$parstack[$#$parstack]; |
my $code = @$parstack[$#$parstack]; |
$code =~ s/\"//g; |
$code =~ s/\"//g; |
$code .=';return $condition;'; |
$code .=';return $condition;'; |
# print "<br>$code<br>"; |
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push( @Apache::structuretags::whileconds, $code); |
my $result = &Apache::run::run($code,$safeeval); |
my $result = &Apache::run::run($code,$safeeval); |
if ( ! $result ) { |
my $bodytext=$$parser[$#$parser]->get_text("/while"); |
# my $skip=$$parser[$#$parser]->get_text("/block"); |
push( @Apache::structuretags::whilebody, $bodytext); |
my $skip=&Apache::lonxml::get_all_text("block",$$parser[$#$parser]); |
if ( $result ) { |
# print "skipped $skip"; |
&Apache::lonxml::newparser($parser,\$bodytext); |
} |
} |
return ""; |
return ""; |
} |
} |
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sub end_block { |
sub end_while { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $code = pop @Apache::structuretags::whileconds; |
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my $bodytext = pop @Apache::structuretags::whilebody; |
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my $result = &Apache::run::run($code,$safeeval); |
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if ( $result ) { |
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&Apache::lonxml::newparser($parser,\$bodytext); |
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} |
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return ""; |
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} |
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# <randomlist> |
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# <tag1>..</tag1> |
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# <tag2>..</tag2> |
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# <tag3>..</tag3> |
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# ... |
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# </randomlist> |
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sub start_randomlist { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $body= &Apache::lonxml::get_all_text("/randomlist",$$parser[$#$parser]); |
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my $b_parser= HTML::TokeParser->new(\$body); |
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my $b_tok; |
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my @randomlist; |
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my $list_item; |
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while($b_tok = $b_parser->get_token() ) { |
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if($b_tok->[0] eq 'S') { # start tag |
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# get content of the tag until matching end tag |
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# get all text upto the matching tag |
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# and push the content into @randomlist |
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$list_item = &Apache::lonxml::get_all_text('/'.$b_tok->[1],$b_parser); |
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$list_item = "$b_tok->[4]"."$list_item"."</$b_tok->[1]>"; |
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push(@randomlist,$list_item); |
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# print "<br /><b>START-TAG $b_tok->[1], $b_tok->[4], $list_item</b>"; |
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} |
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if($b_tok->[0] eq 'T') { # text |
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# what to do with text in between tags? |
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# print "<b>TEXT $b_tok->[1]</b><br />"; |
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} |
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# if($b_tok->[0] eq 'E') { # end tag, should not happen |
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# print "<b>END-TAG $b_tok->[1]</b><br />"; |
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# } |
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} |
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my @idx_arr = (0 .. $#randomlist); |
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&Apache::structuretags::shuffle(\@idx_arr); |
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my $bodytext = ''; |
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for(0 .. $#randomlist) { |
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$bodytext .= "$randomlist[ $idx_arr[$_] ]"; |
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} |
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&Apache::lonxml::newparser($parser,\$bodytext); |
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return ""; |
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} |
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sub shuffle { |
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my $a=shift; |
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my $i; |
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for($i=@$a;--$i;) { |
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my $j=int rand($i+1); |
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next if $i == $j; |
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@$a[$i,$j] = @$a[$j,$i]; |
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} |
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} |
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sub end_randomlist { |
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return ''; |
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} |
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sub start_part { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval); |
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if ($id eq '') { $id = $Apache::lonxml::curdepth; } |
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$Apache::inputtags::part=$id; |
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@Apache::inputtags::responselist = (); |
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if ($target eq 'meta') { |
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return &Apache::response::mandatory_part_meta; |
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} elsif ($target eq 'web' || $target eq 'grade') { |
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my ($status,$datemsg) = &Apache::lonhomework::check_date($id); |
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push (@Apache::inputtags::status,$status); |
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my $expression='$external::datestatus="'.$status.'";'; |
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$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$id.solved"}.'";'; |
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&Apache::run::run($expression,$safeeval); |
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if ( $status eq 'CLOSED' ) { |
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my $bodytext=&Apache::lonxml::get_all_text("/part",$$parser[$#$parser]); |
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if ( $target eq "web" ) { |
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return "<br />Part is not open to be viewed. It $datemsg<br />"; |
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} |
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} |
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} |
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return ''; |
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} |
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sub end_part { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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&Apache::lonxml::debug("in end_part $target "); |
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my $status=$Apache::inputtags::status['-1']; |
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pop @Apache::inputtags::status; |
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if ( $target eq 'meta' ) { return ''; } |
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if ( $target eq 'grade' && $status eq 'CAN_ANSWER') { |
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return &Apache::inputtags::grade; |
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} |
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if ($target eq 'web') { |
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return &Apache::inputtags::gradestatus($Apache::inputtags::part); |
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} |
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return ''; |
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} |
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sub start_preduedate { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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if ($target eq 'web' || $target eq 'grade') { |
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if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' && |
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$Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER' ) { |
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&Apache::lonxml::get_all_text("/preduedate",$$parser[$#$parser]); |
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} |
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} |
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return ''; |
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} |
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sub end_preduedate { |
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return ''; |
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} |
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sub start_postanswerdate { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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if ($target eq 'web' || $target eq 'grade') { |
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if ($Apache::inputtags::status['-1'] ne 'SHOW_ANSWER') { |
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&Apache::lonxml::get_all_text("/postanswerdate",$$parser[$#$parser]); |
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} |
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} |
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return ''; |
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} |
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sub end_postanswerdate { |
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return ''; |
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} |
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sub start_notsolved { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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if ($target eq 'web' || $target eq 'grade') { |
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my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"}; |
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&Apache::lonxml::debug("not solved has :$gradestatus:"); |
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if ($gradestatus =~ /^correct/) { |
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&Apache::lonxml::debug("skipping"); |
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&Apache::lonxml::get_all_text("/notsolved",$$parser[$#$parser]); |
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} |
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} |
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return ''; |
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} |
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sub end_notsolved { |
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return ''; |
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} |
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sub start_solved { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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if ($target eq 'web' || $target eq 'grade') { |
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my $gradestatus=$Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"}; |
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if ($gradestatus !~ /^correct/) { |
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&Apache::lonxml::get_all_text("/solved",$$parser[$#$parser]); |
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} |
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} |
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return ''; |
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} |
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sub end_solved { |
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return ''; |
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} |
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sub start_startouttext { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my @result=(''.''); |
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if ($target eq 'edit' || $target eq 'modified' ) { @result=('','no'); } |
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return (@result); |
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} |
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sub end_startouttext { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $result=''; |
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my $text=''; |
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if ($target eq 'edit') { |
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$text=&Apache::lonxml::get_all_text("endouttext",$$parser[$#$parser]); |
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$result.=&Apache::edit::start_table($token)."<tr><td>Text Block</td> |
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<td>Delete:". |
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&Apache::edit::deletelist($target,$token) |
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."</td> |
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<td>". |
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&Apache::edit::insertlist($target,$token). |
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"</td> |
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</tr><tr><td colspan=\"3\">\n". |
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&Apache::edit::editfield($token->[1],$text,"",50,4); |
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} |
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if ($target eq 'modified') { |
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$text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']); |
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$result='<startouttext />'.&Apache::edit::modifiedfield(); |
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} |
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return $result; |
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} |
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sub start_endouttext { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my $result=''; |
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if ($target eq "edit" ) { $result="</td></tr>".&Apache::edit::end_table()."\n"; } |
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if ($target eq "modified") { $result='<endouttext />'; } |
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return $result; |
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} |
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sub end_endouttext { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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my @result=('',''); |
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if ($target eq "edit" || $target eq 'modified') { @result=('','no'); } |
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return (@result); |
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} |
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sub delete_startouttext { |
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my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_; |
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# my $text=&Apache::lonxml::get_all_text("endouttext",$$parser['-1']); |
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my $text=$$parser['-1']->get_text("/endouttext"); |
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my $token=$$parser['-1']->get_token(); |
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&Apache::lonxml::debug("Deleting :$text: and :$token->[0]:$token->[1]:$token->[2]: for startouttext"); |
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&Apache::lonxml::end_tag($tagstack,$parstack,$token); |
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# Deleting 2 parallel tag pairs, but we need the numbers later to look like |
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# they did the last time round |
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&Apache::lonxml::increasedepth($token); |
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&Apache::lonxml::decreasedepth($token); |
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return 1; |
} |
} |
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1; |
1; |