--- loncom/interface/lonhtmlcommon.pm 2002/08/30 15:35:08 1.9 +++ loncom/interface/lonhtmlcommon.pm 2009/12/22 06:02:44 1.256 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # a pile of common html routines # -# $Id: lonhtmlcommon.pm,v 1.9 2002/08/30 15:35:08 stredwic Exp $ +# $Id: lonhtmlcommon.pm,v 1.256 2009/12/22 06:02:44 faziophi Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,370 +25,2494 @@ # # http://www.lon-capa.org/ # +###################################################################### +###################################################################### + +=pod + +=head1 NAME + +Apache::lonhtmlcommon - routines to do common html things + +=head1 SYNOPSIS + +Referenced by other mod_perl Apache modules. + +=head1 INTRODUCTION + +lonhtmlcommon is a collection of subroutines used to present information +in a consistent html format, or provide other functionality related to +html. + +=head2 General Subroutines + +=over 4 + +=cut + +###################################################################### +###################################################################### package Apache::lonhtmlcommon; use strict; +use Time::Local; +use Time::HiRes; +use Apache::lonlocal; +use Apache::lonnet; +use LONCAPA; + + +sub coursepreflink { + my ($text,$category)=@_; + if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) { + return ''.$text.''; + } else { + return ''; + } +} + +sub raw_href_to_link { + my ($message)=@_; + $message=~s/(https?\:\/\/[^\s\'\"]+)(\s|$)/$1<\/tt><\/a>$2/gi; + return $message; +} + +############################################## +############################################## + +=pod + +=item confirm_success + +Successful completion of an operation message + +=cut + +sub confirm_success { + my ($message,$failure)=@_; + if ($failure) { + return ''."\n" + .''.&mt('Error').' '."\n" + .$message."\n" + .''."\n"; + } else { + return ''."\n" + .''.&mt('OK').' '."\n" + .$message."\n" + .''."\n"; + } +} + +############################################## +############################################## + +=pod + +=item dragmath_button + +Creates a button that launches a dragmath popup-window, in which an +expression can be edited and pasted as LaTeX into a specified textarea. + + textarea - Name of the textarea to edit. + helpicon - If true, show a help icon to the right of the button. + +=cut + +sub dragmath_button { + my ($textarea,$helpicon) = @_; + my $help_text; + if ($helpicon) { + $help_text = &Apache::loncommon::help_open_topic('Authoring_Math_Editor'); + } + my $buttontext=&mt('Edit Math'); + return <$help_text +ENDDRAGMATH +} -sub AscendOrderOptions { - my ($order, $page, $formName)=@_; +############################################## - my $OpSel1 = ''; - my $OpSel2 = ''; +=pod + +=item dragmath_js + +Javascript used to open pop-up window containing dragmath applet which +can be used to paste LaTeX into a textarea. + +=cut + +sub dragmath_js { + my ($popup) = @_; + return < + // + + +ENDDRAGMATHJS +} + + +############################################## +############################################## + +=pod + +=item authorbombs + +=cut + +############################################## +############################################## + +sub authorbombs { + my $url=shift; + $url=&Apache::lonnet::declutter($url); + my ($udom,$uname)=($url=~m{^($LONCAPA::domain_re)/($LONCAPA::username_re)/}); + my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom); + foreach my $bomb (keys(%bombs)) { + if ($bomb =~ /^$udom\/$uname\//) { + return ''.&mt('Bomb').''. + &Apache::loncommon::help_open_topic('About_Bombs'); + } + } + return ''; +} - if($order eq 'Ascending') { - $OpSel1 = ' selected'; +############################################## +############################################## + +sub recent_filename { + my $area=shift; + return 'nohist_recent_'.&escape($area); +} + +sub store_recent { + my ($area,$name,$value,$freeze)=@_; + my $file=&recent_filename($area); + my %recent=&Apache::lonnet::dump($file); + if (scalar(keys(%recent))>20) { +# remove oldest value + my $oldest=time(); + my $delkey=''; + foreach my $item (keys(%recent)) { + my $thistime=(split(/\&/,$recent{$item}))[0]; + if (($thistime ne "always_include") && ($thistime<$oldest)) { + $oldest=$thistime; + $delkey=$item; + } + } + &Apache::lonnet::del($file,[$delkey]); + } +# store new value + my $timestamp; + if ($freeze) { + $timestamp = "always_include"; } else { - $OpSel2 = ' selected'; + $timestamp = time(); + } + &Apache::lonnet::put($file,{ $name => + $timestamp.'&'.&escape($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\n"; + return $return; +} - my $Str = ''; - $Str .= ''."\n"; +# Sort by decreasing time and return key value pairs + my $idx = 1; + foreach my $item (reverse(sort(keys(%time_hash)))) { + $return_hash{$time_hash{$item}} = + &unescape((split(/\&/,$recent{$time_hash{$item}}))[1]); + if ($n && ($idx++ >= $n)) {last;} + } + + return %return_hash; +} + +sub get_recent_frozen { + my ($area) = @_; + my %recent=&Apache::lonnet::dump(&recent_filename($area)); + +# Create hash with all 'frozen' items + my %return_hash = (); + foreach my $item (keys(%recent)) { + my ($thistime,$thisvalue)=(split(/\&/,$recent{$item})); + if ($thistime eq 'always_include') { + $return_hash{$item} = &unescape($thisvalue); + } + } + return %return_hash; +} + + + +=pod + +=item textbox + +=cut + +############################################## +############################################## +sub textbox { + my ($name,$value,$size,$special) = @_; + $size = 40 if (! defined($size)); + $value = &HTML::Entities::encode($value,'<>&"'); + my $Str = ''; return $Str; } -sub MapOptions { - my ($data, $page, $formName)=@_; - my $Str = ''; - $Str .= '}; + # Month + my @Months = qw/January February March April May June + July August September October November December/; + # Pad @Months with a bogus value to make indexing easier + unshift(@Months,'If you can read this an error occurred'); + if ($includeempty) { $monthselector.=""; } + for(my $m = 1;$m <=$#Months;$m++) { + $monthselector .= qq{ '."\n"; - } + $Str .= ''."\n"; +} + +######################################################## +######################################################## + +=pod + +=item Progess Window Handling Routines + +These routines handle the creation, update, increment, and closure of +progress windows. The progress window reports to the user the number +of items completed and an estimate of the time required to complete the rest. + +=over 4 + + +=item &Create_PrgWin + +Writes javascript to the client to open a progress window and returns a +data structure used for bookkeeping. + +Inputs + +=over 4 + +=item $r Apache request + +=item $title The title of the progress window + +=item $heading A description (usually 1 line) of the process being initiated. + +=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. + + +=item &Update_PrgWin + +Updates the text in the progress indicator. Does not increment the count. +See &Increment_PrgWin. + +Inputs: + +=over 4 + +=item $r Apache request + +=item $prog_state Pointer to the data structure returned by &Create_PrgWin + +=item $displaystring The string to write to the status indicator + +=back + +Returns: none + + +=item Increment_PrgWin + +Increment the count of items completed for the progress window by 1. + +Inputs: + +=over 4 + +=item $r Apache request + +=item $prog_state Pointer to the data structure returned by Create_PrgWin + +=item $extraInfo A description of the items being iterated over. Typically +'student'. + +=back + +Returns: none + + +=item Close_PrgWin + +Closes the progress window. + +Inputs: + +=over 4 + +=item $r Apache request + +=item $prog_state Pointer to the data structure returned by Create_PrgWin + +=back + +Returns: none + +=back + +=cut + +######################################################## +######################################################## + +my $uniq=0; +sub get_uniq_name { + $uniq++; + return 'uniquename'.$uniq; +} + +# Create progress +sub Create_PrgWin { + 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 $start_page = + &Apache::loncommon::start_page($title,undef, + {'only_body' => 1, + 'bgcolor' => '#88DDFF', + 'js_ready' => 1}); + my $end_page = &Apache::loncommon::end_page({'js_ready' => 1}); + + #the whole function called through timeout is due to issues + #in mozilla Read BUG #2665 if you want to know the whole story + &r_print($r,&Apache::lonhtmlcommon::scripttag( + "var popwin; + function openpopwin () { + popwin=open(\'\',\'popwin\',\'width=400,height=100\');". + "popwin.document.writeln(\'".$start_page. + "

".&mt("$heading")."<\/h4>". + "
". + '<\\/form>'.$end_page. + "\');". + "popwin.document.close();}". + "\nwindow.setTimeout(openpopwin,0)" + )); + $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,''); + } else { + $prog_state{'formname'}=$formname; + } + if (!$inputname) { + $prog_state{'inputname'}=&get_uniq_name(); + &r_print($r,&mt("$heading [_1]",' ')); + } else { + $prog_state{'inputname'}=$inputname; + } + if (!$formname) { &r_print($r,'
'); } + &Update_PrgWin($r,\%prog_state,&mt('Starting')); + } + + $prog_state{'done'}=0; + $prog_state{'firststart'}=&Time::HiRes::time(); + $prog_state{'laststart'}=&Time::HiRes::time(); + $prog_state{'max'}=$number_to_do; + + return %prog_state; +} + +# update progress +sub Update_PrgWin { + my ($r,$prog_state,$displayString)=@_; + &r_print($r,&Apache::lonhtmlcommon::scripttag( + $$prog_state{'window'}.'.document.'. + $$prog_state{'formname'}.'.'. + $$prog_state{'inputname'}.'.value="'. + $displayString.'";' + )); + $$prog_state{'laststart'}=&Time::HiRes::time(); +} + +# increment progress state +sub Increment_PrgWin { + my ($r,$prog_state,$extraInfo)=@_; + $$prog_state{'done'}++; + my $time_est= (&Time::HiRes::time() - $$prog_state{'firststart'})/ + $$prog_state{'done'} * + ($$prog_state{'max'}-$$prog_state{'done'}); + $time_est = int($time_est); + # + my $min = int($time_est/60); + my $sec = $time_est % 60; + # + my $str; + if ($min == 0 && $sec > 1) { + $str = '[_2] seconds'; + } elsif ($min == 1 && $sec > 1) { + $str = '1 minute [_2] seconds'; + } elsif ($min == 1 && $sec < 2) { + $str = '1 minute'; + } elsif ($min < 10 && $sec > 1) { + $str = '[_1] minutes, [_2] seconds'; + } elsif ($min >= 10 || $sec < 2) { + $str = '[_1] minutes'; + } + $time_est = &mt($str,$min,$sec); + # + my $lasttime = &Time::HiRes::time()-$$prog_state{'laststart'}; + if ($lasttime > 9) { + $lasttime = int($lasttime); + } elsif ($lasttime < 0.01) { + $lasttime = 0; + } else { + $lasttime = sprintf("%3.2f",$lasttime); + } + if ($lasttime == 1) { + $lasttime = '('.$lasttime.' '.&mt('second for').' '.$extraInfo.')'; + } else { + $lasttime = '('.$lasttime.' '.&mt('seconds for').' '.$extraInfo.')'; + } + # + my $user_browser = $env{'browser.type'} if (exists($env{'browser.type'})); + my $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 'explorer' && $user_os =~ 'mac') { + $lasttime = ''; } - $Str .= 'print($to_print); + $r->rflush(); + } else { + print($to_print); + } +} - return $Str; +# ------------------------------------------------------- Puts directory header + +sub crumbs { + my ($uri,$target,$prefix,$form,$skiplast)=@_; + if ($target) { + $target = ' target="'. + &Apache::loncommon::escape_single($target).'"'; + } + my $output=''; + $output.=$prefix.'/'; + if (($env{'user.adv'}) || ($env{'user.author'})) { + my $path=$prefix.'/'; + foreach my $dir (split('/',$uri)) { + if (! $dir) { next; } + $path .= $dir; + if ($path eq $uri) { + if ($skiplast) { + $output.=$dir; + last; + } + } else { + $path.='/'; + } + my $href_path = &HTML::Entities::encode($path,'<>&"'); + &Apache::loncommon::inhibit_menu_check(\$href_path); + if ($form) { + my $href = 'javascript:'.$form.".action='".$href_path."';".$form.'.submit();'; + $output.=qq{$dir/}; + } else { + $output.=qq{$dir/}; + } + } + } else { + foreach my $dir (split('/',$uri)) { + if (! $dir) { next; } + $output.=$dir.'/'; + } + } + if ($uri !~ m|/$|) { $output=~s|/$||; } + $output.=''; + + return $output; } -sub PartOptions { - my ($data, $page, $parts, $formName)=@_; - my $Str = ''; +# --------------------- A function that generates a window for the spellchecker + +sub spellheader { + my $start_page= + &Apache::loncommon::start_page('Speller Suggestions',undef, + {'only_body' => 1, + 'js_ready' => 1, + 'bgcolor' => '#DDDDDD', + 'add_entries' => { + 'onload' => + 'document.forms.spellcheckform.submit()', + } + }); + my $end_page= + &Apache::loncommon::end_page({'js_ready' => 1}); + + my $nothing=&javascript_nothing(); + return (< +// <\\/form>$end_page'); + checkwin.document.close(); +} +// END LON-CAPA Internal --> +// ]]> + +ENDCHECK +} + +# ---------------------------------- Generate link to spell checker for a field - if(!defined($parts)) { - return ''; +sub spelllink { + my ($form,$field)=@_; + my $linktext=&mt('Check Spelling'); + return (<$linktext +ENDLINK +} + +# ------------------------------------------------- Output headers for HTMLArea + +{ + my @htmlareafields; + sub init_htmlareafields { + undef(@htmlareafields); + } + + sub add_htmlareafields { + my (@newfields) = @_; + push(@htmlareafields,@newfields); } - $Str .= ''."\n"; +# ------------------------------------------------- lang to use in html editor +sub htmlarea_lang { + my $lang='en'; + if (&mt('htmlarea_lang') ne 'htmlarea_lang') { + $lang=&mt('htmlarea_lang'); + } + return $lang; +} - return $Str; +# ----------------------------------------- Script to activate only some fields + +sub htmlareaselectactive { + my @fields=@_; + unless (&htmlareabrowser()) { return ''; } + if (&htmlareablocked()) { return '
'.&enablelink(@fields); } + my $output='
'. + &disablelink(@fields); + return $output; } -sub StudentOptions { - my ($cache, $students, $selectedName, $page, $formName)=@_; +# --------------------------------------------------------------------- Blocked - my $Str = ''; - $Str .= ''."\n"; + sub add_advtools { + my ($links) = @_; + return unless (defined $tools{'C'}) and (scalar (@{$tools{'C'}}) > 0); + my $html = start_funclist(); + for my $item (@{$tools{'C'}}){ + next unless $item; + $item =~ s/align="(right|left)"//; + $html .= add_item_funclist($item); + } + $html .= end_funclist(); + $html = Apache::loncommon::head_subbox($html); + $$links .= $html; + } + #SD END - return $Str; +} # End of scope for @Crumbs + +############################################################ +############################################################ + +# Nested table routines. +# +# Routines to display form items in a multi-row table with 2 columns. +# Uses nested tables to divide form elements into segments. +# For examples of use see loncom/interface/lonnotify.pm +# +# Can be used in following order: ... +# &start_pick_box() +# row1 +# row2 +# row3 ... etc. +# &submit_row() +# &end_pick_box() +# +# where row1, row 2 etc. are chosen from &role_select_row,&course_select_row, +# &status_select_row and &email_default_row +# +# Can also be used in following order: +# +# &start_pick_box() +# &row_title() +# &row_closure() +# &row_title() +# &row_closure() ... etc. +# &submit_row() +# &end_pick_box() +# +# In general a &submit_row() call should proceed the call to &end_pick_box(), +# as this routine adds a button for form submission. +# &submit_row() does not require a &row_closure after it. +# +# &start_pick_box() creates a bounding table with 1-pixel wide black border. +# rows should be placed between calls to &start_pick_box() and &end_pick_box. +# +# &row_title() adds a title in the left column for each segment. +# &row_closure() closes a row with a 1-pixel wide black line. +# +# &role_select_row() provides a select box from which to choose 1 or more roles +# &course_select_row provides ways of picking groups of courses +# radio buttons: all, by category or by picking from a course picker pop-up +# note: by category option is only displayed if a domain has implemented +# selection by year, semester, department, number etc. +# +# &status_select_row() provides a select box from which to choose 1 or more +# access types (current access, prior access, and future access) +# +# &email_default_row() provides text boxes for default e-mail suffixes for +# different authentication types in a domain. +# +# &row_title() and &row_closure() are called internally by the &*_select_row +# routines, but can also be called directly to start and end rows which have +# needs that are not accommodated by the *_select_row() routines. + +{ # Start: row_count block for pick_box +my @row_count; + +sub start_pick_box { + my ($css_class) = @_; + if (defined($css_class)) { + $css_class = 'class="'.$css_class.'"'; + } else { + $css_class= 'class="LC_pick_box"'; + } + unshift(@row_count,0); + my $output = <<"END"; + +END + return $output; } -sub StatusOptions { - my ($status, $formName)=@_; +sub end_pick_box { + shift(@row_count); + my $output = <<"END"; +
+END + return $output; +} - my $OpSel1 = ''; - my $OpSel2 = ''; - my $OpSel3 = ''; - - if($status eq 'Any') { $OpSel3 = ' selected'; } - elsif($status eq 'Expired' ) { $OpSel2 = ' selected'; } - else { $OpSel1 = ' selected'; } +sub row_headline { + my $output = <<"END"; + +END + return $output; +} - my $Str = ''; - $Str .= ''."\n"; + my $output = <<"ENDONE"; + + + $title + + +ENDONE + return $output; } -sub MultipleSectionSelect { - my ($sections,$selectedSections)=@_; +sub row_closure { + my ($no_separator) =@_; + my $output = <<"ENDTWO"; + + +ENDTWO + if (!$no_separator) { + $output .= <<"ENDTWO"; + + + + +ENDTWO + } + return $output; +} + +} # End: row_count block for pick_box - my $Str = ''; - $Str .= ''."\n"; + $output .= qq| \n|; + if (defined($title)) { + $output .= &row_closure(); + } + return $output; +} - return $Str; +sub course_select_row { + my ($title,$formname,$totcodes,$codetitles,$idlist,$idlist_titles, + $css_class,$crstype) = @_; + my $output = &row_title($title,$css_class); + $output .= &course_selection($formname,$totcodes,$codetitles,$idlist,$idlist_titles,$crstype); + $output .= &row_closure(); + return $output; } -sub Title { - my ($pageName)=@_; +sub course_selection { + my ($formname,$totcodes,$codetitles,$idlist,$idlist_titles,$crstype) = @_; + my $output = qq| + + |; + + my ($allcrs,$pickspec); + if ($crstype eq 'Community') { + $allcrs = &mt('All communities'); + $pickspec = &mt('Pick specific communities:'); + } else { + $allcrs = &mt('All courses'); + $pickspec = &mt('Pick specific course(s):'); + } - my $Str = ''; + my $courseform=''.&Apache::loncommon::selectcourse_link + ($formname,'pickcourse','pickdomain','coursedesc','',1,$crstype).''; + $output .= ''.$allcrs.'
'; + if ($totcodes > 0) { + my $numtitles = @$codetitles; + if ($numtitles > 0) { + $output .= ''.&mt('Pick courses by category:').'
'; + $output .= ''; + for (my $i=1; $i<$numtitles; $i++) { + $output .= ''; + } + $output .= '
'.$$codetitles[0].'
'."\n". + '		'.$$codetitles[$i].'
'."\n". + ''."\n". + '

'; + } + } + $output .= ''.$pickspec.' '.$courseform.'  selected.
'."\n"; + return $output; +} - $Str .= ''.$pageName.''."\n"; - $Str .= &Apache::loncommon::bodytag($pageName)."\n"; - $Str .= ''."\n"; +sub status_select_row { + my ($types,$title,$css_class) = @_; + my $output; + if (defined($title)) { + $output = &row_title($title,$css_class,'LC_pick_box_select'); + } + $output .= qq| + \n|; + if (defined($title)) { + $output .= &row_closure(); + } + return $output; +} - return $Str; +sub email_default_row { + my ($authtypes,$title,$descrip,$css_class) = @_; + my $output = &row_title($title,$css_class); + $output .= $descrip. + &Apache::loncommon::start_data_table(). + &Apache::loncommon::start_data_table_header_row(). + ''.&mt('Authentication Method').''. + ''.&mt('Username -> e-mail conversion').''."\n". + &Apache::loncommon::end_data_table_header_row(); + my $rownum = 0; + foreach my $auth (sort(keys(%{$authtypes}))) { + my ($userentry,$size); + if ($auth =~ /^krb/) { + $userentry = ''; + $size = 25; + } else { + $userentry = 'username@'; + $size = 15; + } + $output .= &Apache::loncommon::start_data_table_row(). + ' '.$$authtypes{$auth}.''. + ''.$userentry. + ''. + &Apache::loncommon::end_data_table_row(); + } + $output .= &Apache::loncommon::end_data_table(); + $output .= &row_closure(); + return $output; } -=pod -=item &CreateTableHeadings() +sub submit_row { + my ($title,$cmd,$submit_text,$css_class) = @_; + my $output = &row_title($title,$css_class,'LC_pick_box_submit'); + $output .= qq| +
+ +   +

+ \n|; + return $output; +} -This function generates the column headings for the chart. +sub course_custom_roles { + my ($cdom,$cnum) = @_; + my %returnhash=(); + my %coursepersonnel=&Apache::lonnet::dump('nohist_userroles',$cdom,$cnum); + foreach my $person (sort(keys(%coursepersonnel))) { + my ($role) = ($person =~ /^([^:]+):/); + my ($end,$start) = split(/:/,$coursepersonnel{$person}); + if ($end == -1 && $start == -1) { + next; + } + if ($role =~ m|^cr/[^/]+/[^/]+/[^/]|) { + $returnhash{$role} ++; + } + } + return %returnhash; +} -=over 4 -Inputs: $CacheData, $keyID, $headings, $spacePadding +############################################## +############################################## -$CacheData: pointer to a hash tied to the cached data database +# topic_bar +# +# Generates a div containing an (optional) number with a white background followed by a +# title with a background color defined in the corresponding CSS: LC_topic_bar +# Inputs: +# 1. number to display. +# If input for number is empty only the title will be displayed. +# 2. title text to display. +# Outputs - a scalar containing html mark-up for the div. + +sub topic_bar { + my ($num,$title) = @_; + my $number = ''; + if ($num ne '') { + $number = ''.$num.''; + } + return '
'.$number.$title.'
'; +} -$keyID: a pointer to an array containing the names of the data -held in a column and is used as part of a key into $CacheData +############################################## +############################################## + +# echo_form_input +# +# Generates html markup to add form elements from the referrer page +# as hidden form elements (values encoded) in the new page. +# +# Intended to support two types of use +# (a) to allow backing up to earlier pages in a multi-page +# form submission process using a breadcrumb trail. +# +# (b) to allow the current page to be reloaded with form elements +# set on previous page to remain unchanged. An example would +# be where the a page containing a dynamically-built table of data is +# is to be redisplayed, with only the sort order of the data changed. +# +# Inputs: +# 1. Reference to array of form elements in the submitted form on +# the referrer page which are to be excluded from the echoed elements. +# +# 2. Reference to array of regular expressions, which if matched in the +# name of the form element n the referrer page will be omitted from echo. +# +# Outputs: A scalar containing the html markup for the echoed form +# elements (all as hidden elements, with values encoded). -$headings: The names of the headings for the student information -$spacePadding: The spaces to go between columns +sub echo_form_input { + my ($excluded,$regexps) = @_; + my $output = ''; + foreach my $key (keys(%env)) { + if ($key =~ /^form\.(.+)$/) { + my $name = $1; + my $match = 0; + if ((!@{$excluded}) || (!grep/^$name$/,@{$excluded})) { + if (defined($regexps)) { + if (@{$regexps} > 0) { + foreach my $regexp (@{$regexps}) { + if ($name =~ /\Q$regexp\E/) { + $match = 1; + last; + } + } + } + } + if (!$match) { + if (ref($env{$key})) { + foreach my $value (@{$env{$key}}) { + $value = &HTML::Entities::encode($value,'<>&"'); + $output .= ''."\n"; + } + } else { + my $value = &HTML::Entities::encode($env{$key},'<>&"'); + $output .= ''."\n"; + } + } + } + } + } + return $output; +} -Output: $Str +############################################## +############################################## + +# set_form_elements +# +# Generates javascript to set form elements to values based on +# corresponding values for the same form elements when the page was +# previously submitted. +# +# Last submission values are read from hidden form elements in referring +# page which have the same name, i.e., generated by &echo_form_input(). +# +# Intended to be called by onload event. +# +# Inputs: +# (a) Reference to hash of echoed form elements to be set. +# +# In the hash, keys are the form element names, and the values are the +# element type (selectbox, radio, checkbox or text -for textbox, textarea or +# hidden). +# +# (b) Optional reference to hash of stored elements to be set. +# +# If the page being displayed is a page which permits modification of +# previously stored data, e.g., the first page in a multi-page submission, +# then if stored is supplied, form elements will be set to the last stored +# values. If user supplied values are also available for the same elements +# these will replace the stored values. +# +# Output: +# +# javascript function - set_form_elements() which sets form elements, +# expects an argument: formname - the name of the form according to +# the DOM, e.g., document.compose + +sub set_form_elements { + my ($elements,$stored) = @_; + my %values; + my $output .= 'function setFormElements(courseForm) { +'; + if (defined($stored)) { + foreach my $name (keys(%{$stored})) { + if (exists($$elements{$name})) { + if (ref($$stored{$name}) eq 'ARRAY') { + $values{$name} = $$stored{$name}; + } else { + @{$values{$name}} = ($$stored{$name}); + } + } + } + } -$Str: A formatted string of the table column headings. + foreach my $key (keys(%env)) { + if ($key =~ /^form\.(.+)$/) { + my $name = $1; + if (exists($$elements{$name})) { + @{$values{$name}} = &Apache::loncommon::get_env_multiple($key); + } + } + } -=back + foreach my $name (keys(%values)) { + for (my $i=0; $i<@{$values{$name}}; $i++) { + $values{$name}[$i] = &HTML::Entities::decode($values{$name}[$i],'<>&"'); + $values{$name}[$i] =~ s/([\r\n\f]+)/\\n/g; + $values{$name}[$i] =~ s/"/\\"/g; + } + if (($$elements{$name} eq 'text') || ($$elements{$name} eq 'hidden')) { + my $numvalues = @{$values{$name}}; + if ($numvalues > 1) { + my $valuestring = join('","',@{$values{$name}}); + $output .= qq| + var textvalues = new Array ("$valuestring"); + var total = courseForm.elements['$name'].length; + if (total > $numvalues) { + total = $numvalues; + } + for (var i=0; i= 0) { + return true; + } + return false; + } +} +END + return $scripttag; +} + + +# USAGE: htmltag(element, content, {attribute => value,...}); +# +# EXAMPLES: +# - htmltag('a', 'this is an anchor', {href => 'www.example.com', +# title => 'this is a title'}) +# +# - You might want to set up needed tags like: +# +# my $h3 = sub { return htmltag( "h3", @_ ) }; +# +# ... and use them: $h3->("This is a headline") +# +# - To set up a couple of tags, see sub inittags +# +# NOTES: +# - Empty elements, such as
are correctly terminated, +# i.e. htmltag('br') returns
+# - Empty attributes (title="") are filtered out. +# - The function will not check for deprecated attributes. +# +# OUTPUT: content enclosed in xhtml conform tags +sub htmltag{ + return + qq|<$_[0]| + . join( '', map { qq| $_="${$_[2]}{$_}"| if ${$_[2]}{$_} } keys %{ $_[2] } ) + . ($_[1] ? qq|>$_[1]| : qq|/>|). "\n"; +}; -sub CreateHeadings { - my ($data,$keyID,$headings,$displayString,$format)=@_; - my $Str=''; - my $formatting = ''; - - for(my $index=0; $index<(scalar @$headings); $index++) { - my $currentHeading=$headings->[$index]; - if($format eq 'preformatted') { - my @dataLength=split(//,$currentHeading); - my $length=scalar @dataLength; - $formatting = (' 'x - ($data->{$keyID->[$index].':columnWidth'}-$length)); - } - my $linkdata=$keyID->[$index]; - - my $tempString = $displayString; - $tempString =~ s/LINKDATA/$linkdata/; - $tempString =~ s/DISPLAYDATA/$currentHeading/; - $tempString =~ s/FORMATTING/$formatting/; - $Str .= $tempString; +# USAGE: inittags(@tags); +# +# EXAMPLES: +# - my ($h1, $h2, $h3) = initTags( qw( h1 h2 h3 ) ) +# $h1->("This is a headline") #Returns:

This is a headline

+# +# NOTES: See sub htmltag for further information. +# +# OUTPUT: List of subroutines. +sub inittags { + my @tags = @_; + return map { my $tag = $_; + sub { return htmltag( $tag, @_ ) } + } @tags; +} + + +# USAGE: scripttag(scriptcode, [start|end|both]); +# +# EXAMPLES: +# - scripttag("alert('Hello World!')", 'both') +# returns: +# +# +# NOTES: +# - works currently only for javascripts +# +# OUTPUT: +# Scriptcode properly enclosed in "); +Related routines: +=over 4 +start_funclist +add_item_funclist +=back - $r->rflush(); -} +Inputs: ./. -# update progress -sub Update_PrgWin { - my ($displayString,$r)=@_; - $r->print(''); - $r->rflush(); -} +Returns: HTML code with function list end -# close Progress Line -sub Close_PrgWin { - my ($r)=@_; - $r->print(''."\n"); - $r->rflush(); +=cut + +############################################## +############################################## + +sub end_funclist { + return "\n"; } 1; + __END__