Annotation of loncom/interface/groupsort.pm, revision 1.55
1.1 harris41 1: # The LearningOnline Network with CAPA
1.4 harris41 2: # The LON-CAPA group sort handler
3: # Allows for sorting prior to import into RAT.
4: #
1.55 ! albertel 5: # $Id: groupsort.pm,v 1.54 2007/07/11 20:32:15 albertel Exp $
1.4 harris41 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
1.1 harris41 20: #
1.4 harris41 21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
1.1 harris41 26: #
1.4 harris41 27: # http://www.lon-capa.org/
1.1 harris41 28: #
1.4 harris41 29: ###
1.1 harris41 30:
31: package Apache::groupsort;
32:
33: use strict;
34:
35: use Apache::Constants qw(:common);
36: use GDBM_File;
1.15 www 37: use Apache::loncommon;
1.23 www 38: use Apache::lonlocal;
1.27 taceyjo1 39: use Apache::lonnet;
1.50 albertel 40: use LONCAPA();
1.1 harris41 41:
1.33 www 42: my $iconpath; # variable to be accessible to multiple subroutines
1.2 harris41 43: my %hash; # variable to tie to user specific database
1.8 www 44:
1.2 harris41 45:
1.55 ! albertel 46: sub update_actions_hash {
! 47: my ($hash) = @_;
! 48: my $acts=$env{'form.acts'};
! 49: my @Acts=split(/b/,$acts);
! 50: my %ahash;
! 51: my %achash;
! 52: my $ac=0;
! 53: # some initial hashes for working with data
! 54: foreach (@Acts) {
! 55: my ($state,$ref)=split(/a/);
! 56: $ahash{$ref}=$state;
! 57: $achash{$ref}=$ac;
! 58: $ac++;
! 59: }
! 60: # sorting through the actions and changing the global database hash
! 61: foreach my $key (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
! 62: if ($ahash{$key} eq '1') {
! 63: $hash->{'store_'.$hash{'pre_'.$key.'_link'}}=
! 64: $hash->{'pre_'.$key.'_title'};
! 65: $hash->{'storectr_'.$hash{'pre_'.$key.'_link'}}=
! 66: $hash->{'storectr'}+0;
! 67: $hash->{'storectr'}++;
! 68: }
! 69: if ($ahash{$key} eq '0') {
! 70: if ($hash->{'store_'.$hash{'pre_'.$key.'_link'}}) {
! 71: delete($hash->{'store_'.$hash{'pre_'.$key.'_link'}});
! 72: }
! 73: }
! 74: }
! 75: # deleting the previously cached listing
! 76: foreach my $key (keys(%{ $hash })) {
! 77: next if ($key !~ /^pre_(\d+)_link/);
! 78: my $which = $1;
! 79: delete($hash->{'pre_'.$which.'_title'});
! 80: delete($hash->{'pre_'.$which.'_link'});
! 81: }
! 82: }
! 83:
1.33 www 84: sub readfromdb {
85: my ($r,$shash,$thash)=@_;
1.9 www 86:
1.42 www 87: my $diropendb =
88: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_sel_res.db";
1.11 www 89:
90: # ----------------------------- diropendb is now the filename of the db to open
1.13 albertel 91: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
1.55 ! albertel 92: &update_actions_hash(\%hash);
! 93:
1.5 harris41 94: foreach (keys %hash) {
1.1 harris41 95: if ($_ =~ /^store_/) {
1.2 harris41 96: my $key = $_;
97: $key =~ s/^store_//;
1.33 www 98: $$shash{$key} = $hash{'storectr_'.$key};
1.27 taceyjo1 99: if (&Apache::lonnet::gettitle($key) eq '') {
1.33 www 100: $$thash{$key} = $hash{'store_'.$key};
1.28 albertel 101: } else {
1.33 www 102: $$thash{$key} = &Apache::lonnet::gettitle($key);
1.28 albertel 103: }
1.1 harris41 104: }
1.5 harris41 105: }
1.31 albertel 106: if ($env{'form.oldval'}) {
1.2 harris41 107: my $newctr = 0;
1.1 harris41 108: my %chash;
1.33 www 109: foreach (sort {$$shash{$a} <=> $$shash{$b}} (keys %{$shash})) {
1.2 harris41 110: my $key = $_;
1.1 harris41 111: $newctr++;
1.33 www 112: $$shash{$key} = $newctr;
1.2 harris41 113: $hash{'storectr_'.$key} = $newctr;
114: $chash{$newctr} = $key;
1.5 harris41 115: }
1.31 albertel 116: my $oldval = $env{'form.oldval'};
117: my $newval = $env{'form.newval'};
1.2 harris41 118: if ($oldval != $newval) {
1.3 harris41 119: # when newval==0, then push down and delete
120: if ($newval!=0) {
1.33 www 121: $$shash{$chash{$oldval}} = $newval;
1.3 harris41 122: $hash{'storectr_'.$chash{$oldval}} = $newval;
1.33 www 123: } else {
124: $$shash{$chash{$oldval}} = $newctr;
1.3 harris41 125: $hash{'storectr_'.$chash{$oldval}} = $newctr;
126: }
127: if ($newval==0) { # push down
128: my $newval2=$newctr;
129: for my $idx ($oldval..($newval2-1)) {
1.33 www 130: $$shash{$chash{$idx+1}} = $idx;
1.3 harris41 131: $hash{'storectr_'.$chash{$idx+1}} = $idx;
132: }
1.33 www 133: delete $$shash{$chash{$oldval}};
1.3 harris41 134: delete $hash{'storectr_'.$chash{$oldval}};
135: delete $hash{'store_'.$chash{$oldval}};
1.33 www 136: } elsif ($oldval < $newval) { # push down
1.1 harris41 137: for my $idx ($oldval..($newval-1)) {
1.33 www 138: $$shash{$chash{$idx+1}} = $idx;
1.2 harris41 139: $hash{'storectr_'.$chash{$idx+1}} = $idx;
1.1 harris41 140: }
1.33 www 141: } elsif ($oldval > $newval) { # push up
1.1 harris41 142: for my $idx (reverse($newval..($oldval-1))) {
1.33 www 143: $$shash{$chash{$idx}} = $idx+1;
1.2 harris41 144: $hash{'storectr_'.$chash{$idx}} = $idx+1;
1.1 harris41 145: }
146: }
147: }
148: }
149: } else {
1.34 www 150: $r->print('Unable to tie hash to db file');
1.1 harris41 151: }
152: untie %hash;
1.33 www 153: return ($shash,$thash);
154: }
155:
156:
157:
158: sub cleanup {
159: if (tied(%hash)){
160: &Apache::lonnet::logthis('Cleanup groupsort: hash');
161: unless (untie(%hash)) {
162: &Apache::lonnet::logthis('Failed cleanup groupsort: hash');
163: }
164: }
1.39 albertel 165: return OK;
1.33 www 166: }
167:
1.34 www 168: # -------------------------------------------------------------- Read from file
169:
170: sub readfromfile {
1.35 www 171: my ($r,$shash,$thash,$nhash)=@_;
1.34 www 172: my $cont=&Apache::lonnet::getfile
173: (&Apache::lonnet::filelocation('',$env{'form.readfile'}));
174: if ($cont==-1) {
175: $r->print('Unable to read file: '.
176: &Apache::lonnet::filelocation('',$env{'form.readfile'}));
177: } else {
178: my $parser = HTML::TokeParser->new(\$cont);
179: my $token;
1.35 www 180: my $n=1;
1.34 www 181: while ($token = $parser->get_token) {
182: if ($token->[0] eq 'S') {
183: if ($token->[1] eq 'resource') {
184: if ($env{'form.recover'}) {
185: if ($token->[2]->{'type'} ne 'zombie') { next; }
186: } else {
187: if ($token->[2]->{'type'} eq 'zombie') { next; }
188: }
1.35 www 189:
190: my $url=$token->[2]->{'src'};
1.34 www 191: my $name=$token->[2]->{'title'};
1.50 albertel 192: $name=~s/ \[\((\d+)\,($LONCAPA::username_re)\,($LONCAPA::domain_re)\)\]$//;
1.34 www 193: if ($1) {
1.35 www 194: $$nhash{$url}='<br />'.&mt('Removed by ').
1.34 www 195: &Apache::loncommon::plainname($2,$3).', '.
196: &Apache::lonlocal::locallocaltime($1);
197: }
1.37 www 198: $name=~s/\&colon\;/\:/g;
1.35 www 199: $$thash{$url}=$name;
200: $$shash{$url}=$n;
201: $n++;
1.34 www 202: }
203: }
204: }
205: }
206: return ($shash,$thash);
207: }
208:
1.44 www 209: # --------------------------------------------------------- Read from bookmarks
210:
211: sub readfrombookmarks {
212: my ($r,$shash,$thash)=@_;
213: my %bookmarks=&Apache::lonnet::dump('bookmarks');
214: # the bookmark "hash" is just one entry
215: # it's a javascript program code with arguments like ('title','url');
216: my @bookmarks=($bookmarks{'bookmarks'}=~/\((?:\'([^\']+)\'\,\'([^\']+)\'|\"([^\"]+)\"\,\"([^\"]+)\")\)\;/g);
217: my $order=1;
218: for (my $index=0;$index<($#bookmarks+1)/2;$index++) {
219: if ($bookmarks[$index*2+1]) {
220: $$thash{$bookmarks[$index*2+1]}=$bookmarks[$index*2];
221: $$thash{$bookmarks[$index*2+1]}=~s/^LON\-CAPA\s+//;
222: $$shash{$bookmarks[$index*2+1]}=$order;
223: $order++;
224: }
225: }
226: return ($shash,$thash);
227: }
228:
1.33 www 229: # ---------------------------------------------------------------- Main Handler
230: sub handler {
231: my $r = shift;
232:
233: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.44 www 234: ['acts','mode','readfile','recover','bookmarks']);
1.33 www 235: # color scheme
236: my $fileclr = '#ffffe6';
237: my $titleclr = '#ddffff';
238:
239: &Apache::loncommon::content_type($r,'text/html');
240: $r->send_http_header;
241: return OK if $r->header_only;
242:
243: # finish_import looks different for graphical or "simple" RAT
244: my $finishimport='';
1.37 www 245: my $begincondition='';
246: my $endcondition='';
1.44 www 247: if (($env{'form.readfile'}) || ($env{'form.bookmarks'})) {
1.37 www 248: $begincondition='if (eval("document.forms.groupsort.include"+num+".checked")) {';
249: $endcondition='}';
250: }
1.33 www 251: if ($env{'form.mode'} eq 'simple' || $env{'form.mode'} eq '') {
252: $finishimport=(<<ENDSMP);
253: function finish_import() {
254: opener.document.forms.simpleedit.importdetail.value='';
255: for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
1.37 www 256: $begincondition
1.33 www 257: opener.document.forms.simpleedit.importdetail.value+='&'+
258: escape(eval("document.forms.groupsort.title"+num+".value"))+'='+
259: escape(eval("document.forms.groupsort.filelink"+num+".value"));
1.37 www 260: $endcondition
1.33 www 261: }
262: opener.document.forms.simpleedit.submit();
263: self.close();
264: }
265: ENDSMP
266: } else {
267: $finishimport=(<<ENDADV);
268: function finish_import() {
269: var linkflag=false;
270: for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
1.37 www 271: $begincondition
1.33 www 272: insertRowInLastRow();
273: placeResourceInLastRow(
274: eval("document.forms.groupsort.title"+num+".value"),
275: eval("document.forms.groupsort.filelink"+num+".value"),
276: linkflag
277: );
278: linkflag=true;
1.37 www 279: $endcondition
1.33 www 280: }
281: opener.editmode=0;
282: opener.notclear=0;
283: opener.linkmode=0;
284: opener.draw();
285: self.close();
286: }
287: ENDADV
288: }
289:
290: # output start of web page
1.40 albertel 291: my $js = <<END;
292: <script type="text/javascript">
1.33 www 293: function insertRowInLastRow() {
294: opener.insertrow(opener.maxrow);
295: opener.addobj(opener.maxrow,'e&2');
296: }
297: function placeResourceInLastRow (title,url,linkflag) {
298: opener.mostrecent=opener.newresource(opener.maxrow,2,opener.escape(title),
299: opener.escape(url),'false','normal');
300: opener.save();
301: if (linkflag) {
302: opener.joinres(opener.linkmode,opener.mostrecent,0);
303: }
304: opener.linkmode=opener.mostrecent;
305: }
306: $finishimport
307: function selectchange(val) {
308: var newval=0+eval("document.forms.groupsort.alt"+val+".selectedIndex");
309: orderchange(val,newval);
310: }
311: function move(val,newval) {
312: orderchange(val,newval);
313: }
314: function orderchange(val,newval) {
315: document.forms.groupsort.oldval.value=val;
316: document.forms.groupsort.newval.value=newval;
317: document.forms.groupsort.submit();
318: }
319: </script>
320: END
321: # read pertinent machine configuration
322: my $domain = $r->dir_config('lonDefDomain');
323: $iconpath = $r->dir_config('lonIconsURL') . "/";
324:
325: my %shash; # sort order (key is resource location, value is sort order)
326: my %thash; # title (key is resource location, value is title)
1.35 www 327: my %nhash; # notes (key is resource location);
1.33 www 328:
1.34 www 329: if ($env{'form.readfile'}) {
1.35 www 330: &readfromfile($r,\%shash,\%thash,\%nhash);
1.44 www 331: } elsif ($env{'form.bookmarks'}) {
332: &readfrombookmarks($r,\%shash,\%thash);
1.34 www 333: } else {
334: &readfromdb($r,\%shash,\%thash);
335: }
1.33 www 336:
1.2 harris41 337: my $ctr = 0;
338: my $clen = scalar(keys %shash);
1.44 www 339: if (($clen > 1) || ($env{'form.readfile'}) || ($env{'form.bookmarks'})) {
1.23 www 340: my %lt=&Apache::lonlocal::texthash(
341: 'fin'=> 'Finalize order of resources',
1.42 www 342: 'ci' => 'Continue Import',
343: 'cs' => 'Continue Search',
1.23 www 344: 'fi' => 'Finish Import',
1.51 albertel 345: 're' => 'Recover Checked',
1.23 www 346: 'ca' => 'Cancel',
347: 'co' => 'Change Order',
348: 'ti' => 'Title',
1.37 www 349: 'pa' => 'Path',
350: 'in' => 'Include'
1.23 www 351: );
1.40 albertel 352: $r->print(&Apache::loncommon::start_page('Sort Imported Resources',
353: $js));
1.22 albertel 354: $r->print(<<END);
1.23 www 355: <b><font color="#888888">$lt{'fin'}</font></b>
1.14 matthew 356: <form method='post' action='/adm/groupsort' name='groupsort'
357: enctype='application/x-www-form-urlencoded'>
1.1 harris41 358: <input type="hidden" name="fnum" value="$clen" />
359: <input type="hidden" name="oldval" value="" />
360: <input type="hidden" name="newval" value="" />
1.31 albertel 361: <input type="hidden" name="mode" value="$env{'form.mode'}" />
1.36 www 362: <input type="hidden" name="readfile" value="$env{'form.readfile'}" />
1.44 www 363: <input type="hidden" name="bookmarks" value="$env{'form.bookmarks'}" />
1.36 www 364: <input type="hidden" name="recover" value="$env{'form.recover'}" />
1.3 harris41 365: END
1.11 www 366:
1.54 albertel 367: $r->print(&Apache::loncommon::inhibit_menu_check('input'));
1.51 albertel 368: # ---
369:
370: if ($env{'form.recover'}) {
371: $r->print(<<END);
372: <input type="button" name="alter" value="$lt{'re'}"
373: onClick="finish_import()" />
374: <input type="button" name="alter" value="$lt{'ca'}" onClick="self.close()" />
375: END
376: } else {
1.42 www 377: # --- Continue Buttons
1.51 albertel 378: my $resurl =
379: &Apache::loncommon::escape_single(&Apache::loncommon::lastresurl());
380: $r->print(<<END);
1.42 www 381: <input type="button" name="alter" value="$lt{'ci'}"
1.54 albertel 382: onClick="window.location='$resurl?inhibitmenu=yes&catalogmode=import'" />
1.42 www 383: <input type="button" name="altersearch" value="$lt{'cs'}"
1.54 albertel 384: onClick="window.location='/adm/searchcat?inhibitmenu=yes&catalogmode=import'" />
1.23 www 385: <input type="button" name="alter" value="$lt{'fi'}"
1.2 harris41 386: onClick="finish_import()" />
1.23 www 387: <input type="button" name="alter" value="$lt{'ca'}" onClick="self.close()" />
1.1 harris41 388: END
1.51 albertel 389: }
1.22 albertel 390: $r->print("<table border='0'><tr><td bgcolor='#eeeeee'>");
391: $r->print("<table border=0><tr>\n");
1.44 www 392: if (($env{'form.readfile'}) || ($env{'form.bookmarks'})) {
1.37 www 393: $r->print("<td bgcolor='$titleclr'><b>$lt{'in'}</b></td>\n");
394: } else {
395: $r->print("<td colspan='2' bgcolor='$titleclr'><b>$lt{'co'}</b></td>\n");
396: }
1.23 www 397: $r->print("<td colspan='2' bgcolor='$titleclr'><b>$lt{'ti'}</b></td>\n");
398: $r->print("<td bgcolor='$titleclr'><b>$lt{'pa'}</b></td></tr>\n");
1.22 albertel 399: } else {
1.40 albertel 400: $r->print(&Apache::loncommon::start_page(undef,$js,
1.41 banghart 401: {'only_body' => 1}));
1.22 albertel 402: $r->print(<<END);
403: <form method='post' action='/adm/groupsort' name='groupsort'
404: enctype='application/x-www-form-urlencoded'>
405: <input type="hidden" name="fnum" value="$clen" />
406: <input type="hidden" name="oldval" value="" />
407: <input type="hidden" name="newval" value="" />
1.31 albertel 408: <input type="hidden" name="mode" value="$env{'form.mode'}" />
1.22 albertel 409: END
1.54 albertel 410: $r->print(&Apache::loncommon::inhibit_menu_check('input'));
411:
1.22 albertel 412: }
1.5 harris41 413: foreach (sort {$shash{$a}<=>$shash{$b}} (keys %shash)) {
1.1 harris41 414: my $key=$_;
415: $ctr++;
1.25 albertel 416: my $iconname=&Apache::loncommon::icon($key);
1.44 www 417: if (($clen > 1) || ($env{'form.readfile'}) || ($env{'form.bookmarks'})) {
1.22 albertel 418: $r->print("<tr><td bgcolor='$fileclr'>");
1.44 www 419: if (($env{'form.readfile'}) || ($env{'form.bookmarks'})) {
1.37 www 420: $r->print(&checkbox($ctr-1));
421: } else {
422: $r->print(&movers($clen,$ctr));
423: }
1.22 albertel 424: }
1.1 harris41 425: $r->print(&hidden($ctr-1,$thash{$key},$key));
1.44 www 426: if (($clen > 1) || ($env{'form.readfile'}) || ($env{'form.bookmarks'})) {
1.37 www 427: $r->print("</td>");
1.44 www 428: unless (($env{'form.readfile'}) || ($env{'form.bookmarks'})) {
1.37 www 429: $r->print("<td bgcolor='$fileclr'>".
430: &select_box($clen,$ctr).
431: "</td>");
432: }
433: $r->print("<td bgcolor='$fileclr'>");
1.26 albertel 434: $r->print("<img src='$iconname' />");
1.22 albertel 435: $r->print("</td><td bgcolor='$fileclr'>");
1.36 www 436: $r->print("$thash{$key}$nhash{$key}</td><td bgcolor='$fileclr'>\n");
1.22 albertel 437: $r->print("$key</td></tr>\n");
438: }
439: }
1.44 www 440: if (($clen > 1) || ($env{'form.readfile'}) || ($env{'form.bookmarks'})) {
1.22 albertel 441: $r->print("</table></td></tr></table></form>");
442: } else {
443: $r->print(<<END);
444: <script type="text/javascript">
445: finish_import();
446: </script>
447: END
448: }
1.40 albertel 449:
450: $r->print(&Apache::loncommon::end_page());
1.22 albertel 451:
1.1 harris41 452: return OK;
453: }
454:
1.2 harris41 455: # --------------------------------------- Hidden values (returns scalar string)
1.1 harris41 456: sub hidden {
1.2 harris41 457: my ($sel,$title,$filelink) = @_;
458: my $string = '<input type="hidden" name="title'.$sel.'" value="'.$title.
459: '" />';
1.48 albertel 460: $filelink=~s|^/ext/|http://|;
1.2 harris41 461: $string .= '<input type="hidden" name="filelink'.$sel.'" value="'.
462: $filelink.'" />';
1.1 harris41 463: return $string;
464: }
465:
1.2 harris41 466: # --------------------------------------- Moving arrows (returns scalar string)
1.1 harris41 467: sub movers {
1.2 harris41 468: my ($total,$sel) = @_;
469: my $dsel = $sel-1;
470: my $usel = $sel+1;
471: $usel = 1 if $usel > $total;
472: $dsel = $total if $dsel < 1;
1.1 harris41 473: my $string;
1.2 harris41 474: $string = (<<END);
1.1 harris41 475: <table border='0' cellspacing='0' cellpadding='0'>
1.2 harris41 476: <tr><td><a href='javascript:move($sel,$dsel)'>
477: <img src="${iconpath}move_up.gif" alt='UP' border='0' /></a></td></tr>
478: <tr><td><a href='javascript:move($sel,$usel)'>
479: <img src="${iconpath}move_down.gif" alt='DOWN' border='0' /></a></td></tr>
1.1 harris41 480: </table>
481: END
482: return $string;
483: }
1.2 harris41 484:
485: # ------------------------------------------ Select box (returns scalar string)
1.1 harris41 486: sub select_box {
1.2 harris41 487: my ($total,$sel) = @_;
1.1 harris41 488: my $string;
1.2 harris41 489: $string = '<select name="alt'.$sel.'"';
490: $string .= " onChange='selectchange($sel)'>";
1.36 www 491: $string .= "<option name='o0' value='0'>".&mt('discard')."</option>";
1.1 harris41 492: for my $cur (1..$total) {
1.2 harris41 493: $string .= "<option name='o$cur' value='$cur'";
494: if ($cur == $sel) {
495: $string .= "selected";
1.1 harris41 496: }
1.2 harris41 497: $string .= ">$cur</option>";
1.1 harris41 498: }
1.2 harris41 499: $string .= "</select>\n";
1.1 harris41 500: return $string;
501: }
502:
1.37 www 503: # ------------------------------------------------------------------- Checkbox
504:
505: sub checkbox {
506: my $sel=shift;
507: return "<label><input type='checkbox' name='include$sel'".
508: ($env{"form.include$sel"}?' checked="checked"':'').
509: ' />'.&mt('Include').'</label>';
510: }
511:
1.1 harris41 512: 1;
513:
514: __END__
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