Annotation of loncom/interface/groupsort.pm, revision 1.38
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: #
1.38 ! www 5: # $Id: groupsort.pm,v 1.37 2005/06/10 20:43:10 www 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;
1.1 harris41 40:
1.33 www 41: my $iconpath; # variable to be accessible to multiple subroutines
1.2 harris41 42: my %hash; # variable to tie to user specific database
1.8 www 43:
1.2 harris41 44:
1.33 www 45: sub readfromdb {
46: my ($r,$shash,$thash)=@_;
1.9 www 47:
1.4 harris41 48: my $diropendb;
1.11 www 49: # ------------------------------ which file do we open? Easy if explictly given
1.31 albertel 50: if ($env{'form.catalogmode'} eq 'groupsearch') {
1.4 harris41 51: $diropendb =
1.31 albertel 52: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_searchcat.db";
1.33 www 53: } elsif ($env{'form.catalogmode'} eq 'groupimport') {
1.4 harris41 54: $diropendb =
1.31 albertel 55: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_indexer.db";
1.33 www 56: } elsif ($env{'form.catalogmode'} eq 'groupsec') {
1.11 www 57: $diropendb =
1.31 albertel 58: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_groupsec.db";
1.33 www 59: } else {
1.11 www 60: # --------------------- not explicitly given, choose the one most recently used
61: my @dbfn;
62: my @dbst;
63:
64: $dbfn[0] =
1.31 albertel 65: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_searchcat.db";
1.11 www 66: $dbst[0]=-1;
67: if (-e $dbfn[0]) {
68: $dbst[0]=(stat($dbfn[0]))[9];
1.6 harris41 69: }
1.11 www 70: $dbfn[1] =
1.31 albertel 71: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_indexer.db";
1.11 www 72: $dbst[1]=-1;
73: if (-e $dbfn[1]) {
74: $dbst[1]=(stat($dbfn[1]))[9];
1.6 harris41 75: }
1.11 www 76: $dbfn[2] =
1.31 albertel 77: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_groupsec.db";
1.11 www 78: $dbst[2]=-1;
79: if (-e $dbfn[2]) {
80: $dbst[2]=(stat($dbfn[2]))[9];
81: }
82: # Expand here for more modes
83: # ....
84:
85: # Okay, find most recent existing
86:
87: my $newest=0;
1.12 www 88: $diropendb='';
1.11 www 89: for (my $i=0; $i<=$#dbfn; $i++) {
90: if ($dbst[$i]>$newest) {
91: $newest=$dbst[$i];
92: $diropendb=$dbfn[$i];
93: }
1.6 harris41 94: }
1.11 www 95:
1.4 harris41 96: }
1.11 www 97: # ----------------------------- diropendb is now the filename of the db to open
1.13 albertel 98: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
1.31 albertel 99: my $acts = $env{'form.acts'};
1.2 harris41 100: my @Acts = split(/b/,$acts);
1.1 harris41 101: my %ahash;
102: my %achash;
1.2 harris41 103: my $ac = 0;
1.5 harris41 104: foreach (@Acts) {
1.2 harris41 105: my ($state,$ref) = split(/a/);
106: $ahash{$ref} = $state;
107: $achash{$ref} = $ac;
1.1 harris41 108: $ac++;
1.5 harris41 109: }
110: foreach (sort {$achash{$a} <=> $achash{$b}} (keys %ahash)) {
1.2 harris41 111: my $key = $_;
1.1 harris41 112: if ($ahash{$key} eq '1') {
1.3 harris41 113: # my $keyz=join("<br />",keys %hash);
114: # print "<br />$key<br />$keyz".$hash{'pre_'.$key.'_link'}."<br />\n";
1.2 harris41 115: $hash{'store_'.$hash{'pre_'.$key.'_link'}} =
1.1 harris41 116: $hash{'pre_'.$key.'_title'};
1.2 harris41 117: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}} =
1.1 harris41 118: $hash{'storectr'}+0;
119: $hash{'storectr'}++;
120: }
121: if ($ahash{$key} eq '0') {
122: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
123: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
124: }
125: }
1.5 harris41 126: }
127: foreach (keys %hash) {
1.1 harris41 128: if ($_ =~ /^store_/) {
1.2 harris41 129: my $key = $_;
130: $key =~ s/^store_//;
1.33 www 131: $$shash{$key} = $hash{'storectr_'.$key};
1.27 taceyjo1 132: if (&Apache::lonnet::gettitle($key) eq '') {
1.33 www 133: $$thash{$key} = $hash{'store_'.$key};
1.28 albertel 134: } else {
1.33 www 135: $$thash{$key} = &Apache::lonnet::gettitle($key);
1.28 albertel 136: }
1.1 harris41 137: }
1.5 harris41 138: }
1.31 albertel 139: if ($env{'form.oldval'}) {
1.2 harris41 140: my $newctr = 0;
1.1 harris41 141: my %chash;
1.33 www 142: foreach (sort {$$shash{$a} <=> $$shash{$b}} (keys %{$shash})) {
1.2 harris41 143: my $key = $_;
1.1 harris41 144: $newctr++;
1.33 www 145: $$shash{$key} = $newctr;
1.2 harris41 146: $hash{'storectr_'.$key} = $newctr;
147: $chash{$newctr} = $key;
1.5 harris41 148: }
1.31 albertel 149: my $oldval = $env{'form.oldval'};
150: my $newval = $env{'form.newval'};
1.2 harris41 151: if ($oldval != $newval) {
1.3 harris41 152: # when newval==0, then push down and delete
153: if ($newval!=0) {
1.33 www 154: $$shash{$chash{$oldval}} = $newval;
1.3 harris41 155: $hash{'storectr_'.$chash{$oldval}} = $newval;
1.33 www 156: } else {
157: $$shash{$chash{$oldval}} = $newctr;
1.3 harris41 158: $hash{'storectr_'.$chash{$oldval}} = $newctr;
159: }
160: if ($newval==0) { # push down
161: my $newval2=$newctr;
162: for my $idx ($oldval..($newval2-1)) {
1.33 www 163: $$shash{$chash{$idx+1}} = $idx;
1.3 harris41 164: $hash{'storectr_'.$chash{$idx+1}} = $idx;
165: }
1.33 www 166: delete $$shash{$chash{$oldval}};
1.3 harris41 167: delete $hash{'storectr_'.$chash{$oldval}};
168: delete $hash{'store_'.$chash{$oldval}};
1.33 www 169: } elsif ($oldval < $newval) { # push down
1.1 harris41 170: for my $idx ($oldval..($newval-1)) {
1.33 www 171: $$shash{$chash{$idx+1}} = $idx;
1.2 harris41 172: $hash{'storectr_'.$chash{$idx+1}} = $idx;
1.1 harris41 173: }
1.33 www 174: } elsif ($oldval > $newval) { # push up
1.1 harris41 175: for my $idx (reverse($newval..($oldval-1))) {
1.33 www 176: $$shash{$chash{$idx}} = $idx+1;
1.2 harris41 177: $hash{'storectr_'.$chash{$idx}} = $idx+1;
1.1 harris41 178: }
179: }
180: }
181: }
182: } else {
1.34 www 183: $r->print('Unable to tie hash to db file');
1.1 harris41 184: }
185: untie %hash;
1.33 www 186: return ($shash,$thash);
187: }
188:
189:
190:
191: sub cleanup {
192: if (tied(%hash)){
193: &Apache::lonnet::logthis('Cleanup groupsort: hash');
194: unless (untie(%hash)) {
195: &Apache::lonnet::logthis('Failed cleanup groupsort: hash');
196: }
197: }
198: }
199:
1.34 www 200: # -------------------------------------------------------------- Read from file
201:
202: sub readfromfile {
1.35 www 203: my ($r,$shash,$thash,$nhash)=@_;
1.34 www 204: my $cont=&Apache::lonnet::getfile
205: (&Apache::lonnet::filelocation('',$env{'form.readfile'}));
206: if ($cont==-1) {
207: $r->print('Unable to read file: '.
208: &Apache::lonnet::filelocation('',$env{'form.readfile'}));
209: } else {
210: my $parser = HTML::TokeParser->new(\$cont);
211: my $token;
1.35 www 212: my $n=1;
1.34 www 213: while ($token = $parser->get_token) {
214: if ($token->[0] eq 'S') {
215: if ($token->[1] eq 'resource') {
216: if ($env{'form.recover'}) {
217: if ($token->[2]->{'type'} ne 'zombie') { next; }
218: } else {
219: if ($token->[2]->{'type'} eq 'zombie') { next; }
220: }
1.35 www 221:
222: my $url=$token->[2]->{'src'};
1.34 www 223: my $name=$token->[2]->{'title'};
224: $name=~s/ \[\((\d+)\,(\w+)\,(\w+)\)\]$//;
225: if ($1) {
1.35 www 226: $$nhash{$url}='<br />'.&mt('Removed by ').
1.34 www 227: &Apache::loncommon::plainname($2,$3).', '.
228: &Apache::lonlocal::locallocaltime($1);
229: }
1.37 www 230: $name=~s/\&colon\;/\:/g;
1.35 www 231: $$thash{$url}=$name;
232: $$shash{$url}=$n;
233: $n++;
1.34 www 234: }
235: }
236: }
237: }
238: return ($shash,$thash);
239: }
240:
1.33 www 241: # ---------------------------------------------------------------- Main Handler
242: sub handler {
243: my $r = shift;
244:
245: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.34 www 246: ['acts','catalogmode','mode','readfile','recover']);
1.33 www 247: # color scheme
248: my $fileclr = '#ffffe6';
249: my $titleclr = '#ddffff';
250:
251: &Apache::loncommon::content_type($r,'text/html');
252: $r->send_http_header;
253: return OK if $r->header_only;
254:
255: # finish_import looks different for graphical or "simple" RAT
256: my $finishimport='';
1.37 www 257: my $begincondition='';
258: my $endcondition='';
259: if ($env{'form.readfile'}) {
260: $begincondition='if (eval("document.forms.groupsort.include"+num+".checked")) {';
261: $endcondition='}';
262: }
1.33 www 263: if ($env{'form.mode'} eq 'simple' || $env{'form.mode'} eq '') {
264: $finishimport=(<<ENDSMP);
265: function finish_import() {
266: opener.document.forms.simpleedit.importdetail.value='';
267: for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
1.37 www 268: $begincondition
1.33 www 269: opener.document.forms.simpleedit.importdetail.value+='&'+
270: escape(eval("document.forms.groupsort.title"+num+".value"))+'='+
271: escape(eval("document.forms.groupsort.filelink"+num+".value"));
1.37 www 272: $endcondition
1.33 www 273: }
274: opener.document.forms.simpleedit.submit();
275: self.close();
276: }
277: ENDSMP
278: } else {
279: $finishimport=(<<ENDADV);
280: function finish_import() {
281: var linkflag=false;
282: for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
1.37 www 283: $begincondition
1.33 www 284: insertRowInLastRow();
285: placeResourceInLastRow(
286: eval("document.forms.groupsort.title"+num+".value"),
287: eval("document.forms.groupsort.filelink"+num+".value"),
288: linkflag
289: );
290: linkflag=true;
1.37 www 291: $endcondition
1.33 www 292: }
293: opener.editmode=0;
294: opener.notclear=0;
295: opener.linkmode=0;
296: opener.draw();
297: self.close();
298: }
299: ENDADV
300: }
301:
302: # output start of web page
303: my $html=&Apache::lonxml::xmlbegin();
304: $r->print(<<END);
305: $html
306: <head>
307: <title>The LearningOnline Network With CAPA Group Sorter</title>
308: <script language='javascript'>
309: function insertRowInLastRow() {
310: opener.insertrow(opener.maxrow);
311: opener.addobj(opener.maxrow,'e&2');
312: }
313: function placeResourceInLastRow (title,url,linkflag) {
314: opener.mostrecent=opener.newresource(opener.maxrow,2,opener.escape(title),
315: opener.escape(url),'false','normal');
316: opener.save();
317: if (linkflag) {
318: opener.joinres(opener.linkmode,opener.mostrecent,0);
319: }
320: opener.linkmode=opener.mostrecent;
321: }
322: $finishimport
323: function selectchange(val) {
324: var newval=0+eval("document.forms.groupsort.alt"+val+".selectedIndex");
325: orderchange(val,newval);
326: }
327: function move(val,newval) {
328: orderchange(val,newval);
329: }
330: function orderchange(val,newval) {
331: document.forms.groupsort.oldval.value=val;
332: document.forms.groupsort.newval.value=newval;
333: document.forms.groupsort.submit();
334: }
335: </script>
336: </head>
337: END
338: # read pertinent machine configuration
339: my $domain = $r->dir_config('lonDefDomain');
340: $iconpath = $r->dir_config('lonIconsURL') . "/";
341:
342: my %shash; # sort order (key is resource location, value is sort order)
343: my %thash; # title (key is resource location, value is title)
1.35 www 344: my %nhash; # notes (key is resource location);
1.33 www 345:
1.34 www 346: if ($env{'form.readfile'}) {
1.35 www 347: &readfromfile($r,\%shash,\%thash,\%nhash);
1.34 www 348: } else {
349: &readfromdb($r,\%shash,\%thash);
350: }
1.33 www 351:
1.2 harris41 352: my $ctr = 0;
353: my $clen = scalar(keys %shash);
1.38 ! www 354: if (($clen > 1) || ($env{'form.readfile'})) {
1.23 www 355: my %lt=&Apache::lonlocal::texthash(
356: 'fin'=> 'Finalize order of resources',
357: 'gb' => 'Go Back',
358: 'ns' => 'New Search',
359: 'fi' => 'Finish Import',
360: 'ca' => 'Cancel',
361: 'co' => 'Change Order',
362: 'ti' => 'Title',
1.37 www 363: 'pa' => 'Path',
364: 'in' => 'Include'
1.23 www 365: );
1.22 albertel 366: $r->print(&Apache::loncommon::bodytag('Sort Imported Resources'));
367: $r->print(<<END);
1.23 www 368: <b><font color="#888888">$lt{'fin'}</font></b>
1.14 matthew 369: <form method='post' action='/adm/groupsort' name='groupsort'
370: enctype='application/x-www-form-urlencoded'>
1.1 harris41 371: <input type="hidden" name="fnum" value="$clen" />
372: <input type="hidden" name="oldval" value="" />
373: <input type="hidden" name="newval" value="" />
1.31 albertel 374: <input type="hidden" name="mode" value="$env{'form.mode'}" />
1.36 www 375: <input type="hidden" name="readfile" value="$env{'form.readfile'}" />
376: <input type="hidden" name="recover" value="$env{'form.recover'}" />
1.3 harris41 377: END
1.11 www 378:
1.22 albertel 379: # --- Expand here if "GO BACK" button desired
1.31 albertel 380: if ($env{'form.catalogmode'} eq 'groupimport') {
1.29 matthew 381: my $resurl = &Apache::loncommon::lastresurl();
1.22 albertel 382: $r->print(<<END);
1.23 www 383: <input type="button" name="alter" value="$lt{'gb'}"
1.29 matthew 384: onClick="window.location='$resurl?catalogmode=groupimport'" />
1.3 harris41 385: END
1.22 albertel 386: }
1.31 albertel 387: if ($env{'form.catalogmode'} eq 'groupsearch') {
1.22 albertel 388: $r->print(<<END);
1.23 www 389: <input type="button" name="alter" value="$lt{'ns'}"
1.16 matthew 390: onClick="window.location='/adm/searchcat?catalogmode=groupsearch&cleargroupsort=1'" />
1.3 harris41 391: END
1.22 albertel 392: }
393: # ---
1.11 www 394:
1.22 albertel 395: $r->print(<<END);
1.23 www 396: <input type="button" name="alter" value="$lt{'fi'}"
1.2 harris41 397: onClick="finish_import()" />
1.23 www 398: <input type="button" name="alter" value="$lt{'ca'}" onClick="self.close()" />
1.1 harris41 399: END
1.22 albertel 400: $r->print("<table border='0'><tr><td bgcolor='#eeeeee'>");
401: $r->print("<table border=0><tr>\n");
1.37 www 402: if ($env{'form.readfile'}) {
403: $r->print("<td bgcolor='$titleclr'><b>$lt{'in'}</b></td>\n");
404: } else {
405: $r->print("<td colspan='2' bgcolor='$titleclr'><b>$lt{'co'}</b></td>\n");
406: }
1.23 www 407: $r->print("<td colspan='2' bgcolor='$titleclr'><b>$lt{'ti'}</b></td>\n");
408: $r->print("<td bgcolor='$titleclr'><b>$lt{'pa'}</b></td></tr>\n");
1.22 albertel 409: } else {
410: $r->print(<<END);
411: <body>
412: <form method='post' action='/adm/groupsort' name='groupsort'
413: enctype='application/x-www-form-urlencoded'>
414: <input type="hidden" name="fnum" value="$clen" />
415: <input type="hidden" name="oldval" value="" />
416: <input type="hidden" name="newval" value="" />
1.31 albertel 417: <input type="hidden" name="mode" value="$env{'form.mode'}" />
1.22 albertel 418: END
419: }
1.5 harris41 420: foreach (sort {$shash{$a}<=>$shash{$b}} (keys %shash)) {
1.1 harris41 421: my $key=$_;
422: $ctr++;
1.25 albertel 423: my $iconname=&Apache::loncommon::icon($key);
1.38 ! www 424: if (($clen > 1) || ($env{'form.readfile'})) {
1.22 albertel 425: $r->print("<tr><td bgcolor='$fileclr'>");
1.37 www 426: if ($env{'form.readfile'}) {
427: $r->print(&checkbox($ctr-1));
428: } else {
429: $r->print(&movers($clen,$ctr));
430: }
1.22 albertel 431: }
1.1 harris41 432: $r->print(&hidden($ctr-1,$thash{$key},$key));
1.38 ! www 433: if (($clen > 1) || ($env{'form.readfile'})) {
1.37 www 434: $r->print("</td>");
435: unless ($env{'form.readfile'}) {
436: $r->print("<td bgcolor='$fileclr'>".
437: &select_box($clen,$ctr).
438: "</td>");
439: }
440: $r->print("<td bgcolor='$fileclr'>");
1.26 albertel 441: $r->print("<img src='$iconname' />");
1.22 albertel 442: $r->print("</td><td bgcolor='$fileclr'>");
1.36 www 443: $r->print("$thash{$key}$nhash{$key}</td><td bgcolor='$fileclr'>\n");
1.22 albertel 444: $r->print("$key</td></tr>\n");
445: }
446: }
1.38 ! www 447: if (($clen > 1) || ($env{'form.readfile'})) {
1.22 albertel 448: $r->print("</table></td></tr></table></form>");
449: } else {
450: $r->print(<<END);
451: <script type="text/javascript">
452: finish_import();
453: </script>
454: END
455: }
1.1 harris41 456: $r->print(<<END);
457: </body>
458: </html>
459: END
1.22 albertel 460:
1.1 harris41 461: return OK;
462: }
463:
1.2 harris41 464: # --------------------------------------- Hidden values (returns scalar string)
1.1 harris41 465: sub hidden {
1.2 harris41 466: my ($sel,$title,$filelink) = @_;
467: my $string = '<input type="hidden" name="title'.$sel.'" value="'.$title.
468: '" />';
469: $string .= '<input type="hidden" name="filelink'.$sel.'" value="'.
470: $filelink.'" />';
1.1 harris41 471: return $string;
472: }
473:
1.2 harris41 474: # --------------------------------------- Moving arrows (returns scalar string)
1.1 harris41 475: sub movers {
1.2 harris41 476: my ($total,$sel) = @_;
477: my $dsel = $sel-1;
478: my $usel = $sel+1;
479: $usel = 1 if $usel > $total;
480: $dsel = $total if $dsel < 1;
1.1 harris41 481: my $string;
1.2 harris41 482: $string = (<<END);
1.1 harris41 483: <table border='0' cellspacing='0' cellpadding='0'>
1.2 harris41 484: <tr><td><a href='javascript:move($sel,$dsel)'>
485: <img src="${iconpath}move_up.gif" alt='UP' border='0' /></a></td></tr>
486: <tr><td><a href='javascript:move($sel,$usel)'>
487: <img src="${iconpath}move_down.gif" alt='DOWN' border='0' /></a></td></tr>
1.1 harris41 488: </table>
489: END
490: return $string;
491: }
1.2 harris41 492:
493: # ------------------------------------------ Select box (returns scalar string)
1.1 harris41 494: sub select_box {
1.2 harris41 495: my ($total,$sel) = @_;
1.1 harris41 496: my $string;
1.2 harris41 497: $string = '<select name="alt'.$sel.'"';
498: $string .= " onChange='selectchange($sel)'>";
1.36 www 499: $string .= "<option name='o0' value='0'>".&mt('discard')."</option>";
1.1 harris41 500: for my $cur (1..$total) {
1.2 harris41 501: $string .= "<option name='o$cur' value='$cur'";
502: if ($cur == $sel) {
503: $string .= "selected";
1.1 harris41 504: }
1.2 harris41 505: $string .= ">$cur</option>";
1.1 harris41 506: }
1.2 harris41 507: $string .= "</select>\n";
1.1 harris41 508: return $string;
509: }
510:
1.37 www 511: # ------------------------------------------------------------------- Checkbox
512:
513: sub checkbox {
514: my $sel=shift;
515: return "<label><input type='checkbox' name='include$sel'".
516: ($env{"form.include$sel"}?' checked="checked"':'').
517: ' />'.&mt('Include').'</label>';
518: }
519:
1.1 harris41 520: 1;
521:
522: __END__
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