loncom/interface/groupsort.pm - view

File: [LON-CAPA] / loncom / interface / groupsort.pm
Revision 1.18: download - view: text, annotated - select for diffs
Tue Jan 14 18:47:50 2003 UTC (21 years, 5 months ago) by www
Branches: MAIN
CVS tags: HEAD

Attempt to better catch and log untied hashes by usage of cleanup handlers.

1: # The LearningOnline Network with CAPA 2: # The LON-CAPA group sort handler 3: # Allows for sorting prior to import into RAT. 4: # 5: # $Id: groupsort.pm,v 1.18 2003/01/14 18:47:50 www Exp $ 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. 20: # 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 26: # 27: # http://www.lon-capa.org/ 28: # 29: # YEAR=2001 30: # 8/7,8/8,10/14,10/15,12/10 Scott Harrison 31: # YEAR=2002 32: # 1/17 Scott Harrison 33: # 34: ### 35: 36: package Apache::groupsort; 37: 38: use strict; 39: 40: use Apache::Constants qw(:common); 41: use GDBM_File; 42: use Apache::loncommon; 43: 44: my %hash; # variable to tie to user specific database 45: my $iconpath; # variable to be accessible to multiple subroutines 46: 47: sub cleanup { 48: if (tied(%hash)){ 49: &Apache::lonnet::logthis('Cleanup groupsort: hash'); 50: unless (untie(%hash)) { 51: &Apache::lonnet::logthis('Failed cleanup groupsort: hash'); 52: } 53: } 54: } 55: 56: # ---------------------------------------------------------------- Main Handler 57: sub handler { 58: my $r = shift; 59: 60: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 61: ['acts','catalogmode','mode']); 62: # color scheme 63: my $fileclr = '#ffffe6'; 64: my $titleclr = '#ddffff'; 65: 66: $r->content_type('text/html'); 67: $r->send_http_header; 68: return OK if $r->header_only; 69: 70: # finish_import looks different for graphical or "simple" RAT 71: my $finishimport=''; 72: if ($ENV{'form.mode'} eq 'simple') { 73: $finishimport=(<<ENDSMP); 74: function finish_import() { 75: opener.document.forms.simpleedit.importdetail.value=''; 76: for (var num=0; num<document.forms.groupsort.fnum.value; num++) { 77: opener.document.forms.simpleedit.importdetail.value+='&'+ 78: escape(eval("document.forms.groupsort.title"+num+".value"))+'='+ 79: escape(eval("document.forms.groupsort.filelink"+num+".value")); 80: } 81: opener.document.forms.simpleedit.submit(); 82: self.close(); 83: } 84: ENDSMP 85: } else { 86: $finishimport=(<<ENDADV); 87: function finish_import() { 88: var linkflag=false; 89: for (var num=0; num<document.forms.groupsort.fnum.value; num++) { 90: insertRowInLastRow(); 91: placeResourceInLastRow( 92: eval("document.forms.groupsort.title"+num+".value"), 93: eval("document.forms.groupsort.filelink"+num+".value"), 94: linkflag 95: ); 96: linkflag=true; 97: } 98: opener.editmode=0; 99: opener.notclear=0; 100: opener.linkmode=0; 101: opener.draw(); 102: self.close(); 103: } 104: ENDADV 105: } 106: 107: # output start of web page 108: 109: $r->print(<<END); 110: <html> 111: <head> 112: <title>The LearningOnline Network With CAPA Group Sorter</title> 113: <script language='javascript'> 114: function insertRowInLastRow() { 115: opener.insertrow(opener.maxrow); 116: opener.addobj(opener.maxrow,'e&2'); 117: } 118: function placeResourceInLastRow (title,url,linkflag) { 119: opener.newresource(opener.maxrow,2,opener.escape(title), 120: opener.escape(url),'false','normal'); 121: opener.save(); 122: opener.mostrecent=opener.obj.length-1; 123: if (linkflag) { 124: opener.joinres(opener.linkmode,opener.mostrecent,0); 125: } 126: opener.linkmode=opener.mostrecent; 127: } 128: $finishimport 129: function selectchange(val) { 130: var newval=0+eval("document.forms.groupsort.alt"+val+".selectedIndex"); 131: orderchange(val,newval); 132: } 133: function move(val,newval) { 134: orderchange(val,newval); 135: } 136: function orderchange(val,newval) { 137: document.forms.groupsort.oldval.value=val; 138: document.forms.groupsort.newval.value=newval; 139: document.forms.groupsort.submit(); 140: } 141: </script> 142: </head> 143: END 144: $r->print(&Apache::loncommon::bodytag('Sort Imported Resources')); 145: # read pertinent machine configuration 146: my $domain = $r->dir_config('lonDefDomain'); 147: $iconpath = $r->dir_config('lonIconsURL') . "/"; 148: 149: my %shash; # sort order (key is resource location, value is sort order) 150: my %thash; # title (key is resource location, value is title) 151: 152: my $diropendb; 153: # ------------------------------ which file do we open? Easy if explictly given 154: if ($ENV{'form.catalogmode'} eq 'groupsearch') { 155: $diropendb = 156: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db"; 157: } 158: elsif ($ENV{'form.catalogmode'} eq 'groupimport') { 159: $diropendb = 160: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db"; 161: } 162: elsif ($ENV{'form.catalogmode'} eq 'groupsec') { 163: $diropendb = 164: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_groupsec.db"; 165: } 166: # --------------------- not explicitly given, choose the one most recently used 167: else { # choose last accessed 168: my @dbfn; 169: my @dbst; 170: 171: $dbfn[0] = 172: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db"; 173: $dbst[0]=-1; 174: if (-e $dbfn[0]) { 175: $dbst[0]=(stat($dbfn[0]))[9]; 176: } 177: $dbfn[1] = 178: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db"; 179: $dbst[1]=-1; 180: if (-e $dbfn[1]) { 181: $dbst[1]=(stat($dbfn[1]))[9]; 182: } 183: $dbfn[2] = 184: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_groupsec.db"; 185: $dbst[2]=-1; 186: if (-e $dbfn[2]) { 187: $dbst[2]=(stat($dbfn[2]))[9]; 188: } 189: # Expand here for more modes 190: # .... 191: 192: # Okay, find most recent existing 193: 194: my $newest=0; 195: $diropendb=''; 196: for (my $i=0; $i<=$#dbfn; $i++) { 197: if ($dbst[$i]>$newest) { 198: $newest=$dbst[$i]; 199: $diropendb=$dbfn[$i]; 200: } 201: } 202: 203: } 204: # ----------------------------- diropendb is now the filename of the db to open 205: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) { 206: my $acts = $ENV{'form.acts'}; 207: my @Acts = split(/b/,$acts); 208: my %ahash; 209: my %achash; 210: my $ac = 0; 211: foreach (@Acts) { 212: my ($state,$ref) = split(/a/); 213: $ahash{$ref} = $state; 214: $achash{$ref} = $ac; 215: $ac++; 216: } 217: foreach (sort {$achash{$a} <=> $achash{$b}} (keys %ahash)) { 218: my $key = $_; 219: if ($ahash{$key} eq '1') { 220: # my $keyz=join("<br />",keys %hash); 221: # print "<br />$key<br />$keyz".$hash{'pre_'.$key.'_link'}."<br />\n"; 222: $hash{'store_'.$hash{'pre_'.$key.'_link'}} = 223: $hash{'pre_'.$key.'_title'}; 224: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}} = 225: $hash{'storectr'}+0; 226: $hash{'storectr'}++; 227: } 228: if ($ahash{$key} eq '0') { 229: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) { 230: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}}; 231: } 232: } 233: } 234: foreach (keys %hash) { 235: if ($_ =~ /^store_/) { 236: my $key = $_; 237: $key =~ s/^store_//; 238: $shash{$key} = $hash{'storectr_'.$key}; 239: $thash{$key} = $hash{'store_'.$key}; 240: } 241: } 242: if ($ENV{'form.oldval'}) { 243: my $newctr = 0; 244: my %chash; 245: foreach (sort {$shash{$a} <=> $shash{$b}} (keys %shash)) { 246: my $key = $_; 247: $newctr++; 248: $shash{$key} = $newctr; 249: $hash{'storectr_'.$key} = $newctr; 250: $chash{$newctr} = $key; 251: } 252: my $oldval = $ENV{'form.oldval'}; 253: my $newval = $ENV{'form.newval'}; 254: if ($oldval != $newval) { 255: # when newval==0, then push down and delete 256: if ($newval!=0) { 257: $shash{$chash{$oldval}} = $newval; 258: $hash{'storectr_'.$chash{$oldval}} = $newval; 259: } 260: else { 261: $shash{$chash{$oldval}} = $newctr; 262: $hash{'storectr_'.$chash{$oldval}} = $newctr; 263: } 264: if ($newval==0) { # push down 265: my $newval2=$newctr; 266: for my $idx ($oldval..($newval2-1)) { 267: $shash{$chash{$idx+1}} = $idx; 268: $hash{'storectr_'.$chash{$idx+1}} = $idx; 269: } 270: delete $shash{$chash{$oldval}}; 271: delete $hash{'storectr_'.$chash{$oldval}}; 272: delete $hash{'store_'.$chash{$oldval}}; 273: } 274: elsif ($oldval < $newval) { # push down 275: for my $idx ($oldval..($newval-1)) { 276: $shash{$chash{$idx+1}} = $idx; 277: $hash{'storectr_'.$chash{$idx+1}} = $idx; 278: } 279: } 280: elsif ($oldval > $newval) { # push up 281: for my $idx (reverse($newval..($oldval-1))) { 282: $shash{$chash{$idx}} = $idx+1; 283: $hash{'storectr_'.$chash{$idx}} = $idx+1; 284: } 285: } 286: } 287: } 288: } else { 289: $r->print('Unable to tie hash to db file</body></html>'); 290: return OK; 291: } 292: untie %hash; 293: my $ctr = 0; 294: my $clen = scalar(keys %shash); 295: $r->print(<<END); 296: <b><font color="#888888">Finalize order of resources</font></b> 297: <form method='post' action='/adm/groupsort' name='groupsort' 298: enctype='application/x-www-form-urlencoded'> 299: <input type="hidden" name="fnum" value="$clen" /> 300: <input type="hidden" name="oldval" value="" /> 301: <input type="hidden" name="newval" value="" /> 302: <input type="hidden" name="mode" value="$ENV{'form.mode'}" /> 303: END 304: 305: # --- Expand here if "GO BACK" button desired 306: if ($ENV{'form.catalogmode'} eq 'groupimport') { 307: $r->print(<<END); 308: <input type="button" name="alter" value="GO BACK" 309: onClick="window.location='/res/?catalogmode=groupimport'" />  310: END 311: } 312: if ($ENV{'form.catalogmode'} eq 'groupsearch') { 313: $r->print(<<END); 314: <input type="button" name="alter" value="New Search" 315: onClick="window.location='/adm/searchcat?catalogmode=groupsearch&cleargroupsort=1'" />  316: END 317: } 318: # --- 319: 320: $r->print(<<END); 321: <input type="button" name="alter" value="FINISH IMPORT" 322: onClick="finish_import()" />  323: <input type="button" name="alter" value="CANCEL" onClick="self.close()" /> 324: END 325: $r->print("<table border='0'><tr><td bgcolor='#eeeeee'>"); 326: $r->print("<table border=0><tr>\n"); 327: $r->print("<td colspan='2' bgcolor='$titleclr'><b>Change order</b></td>". 328: "\n"); 329: $r->print("<td colspan='2' bgcolor='$titleclr'><b>Title</b></td>\n"); 330: $r->print("<td bgcolor='$titleclr'><b>Path</b></td></tr>\n"); 331: foreach (sort {$shash{$a}<=>$shash{$b}} (keys %shash)) { 332: my $key=$_; 333: $ctr++; 334: my @file_ext = split(/\./,$key); 335: my $curfext = $file_ext[scalar(@file_ext)-1]; 336: $r->print("<tr><td bgcolor='$fileclr'>"); 337: $r->print(&movers($clen,$ctr)); 338: $r->print(&hidden($ctr-1,$thash{$key},$key)); 339: $r->print("</td><td bgcolor='$fileclr'>"); 340: $r->print(&select_box($clen,$ctr)); 341: $r->print("</td><td bgcolor='$fileclr'>"); 342: $r->print("<img src='$iconpath$curfext.gif'>"); 343: $r->print("</td><td bgcolor='$fileclr'>"); 344: $r->print("$thash{$key}</td><td bgcolor='$fileclr'>\n"); 345: $r->print("$key</td></tr>\n"); 346: } 347: $r->print("</table></td></tr></table></form>"); 348: $r->print(<<END); 349: </body> 350: </html> 351: END 352: return OK; 353: } 354: 355: # --------------------------------------- Hidden values (returns scalar string) 356: sub hidden { 357: my ($sel,$title,$filelink) = @_; 358: my $string = '<input type="hidden" name="title'.$sel.'" value="'.$title. 359: '" />'; 360: $string .= '<input type="hidden" name="filelink'.$sel.'" value="'. 361: $filelink.'" />'; 362: return $string; 363: } 364: 365: # --------------------------------------- Moving arrows (returns scalar string) 366: sub movers { 367: my ($total,$sel) = @_; 368: my $dsel = $sel-1; 369: my $usel = $sel+1; 370: $usel = 1 if $usel > $total; 371: $dsel = $total if $dsel < 1; 372: my $string; 373: $string = (<<END); 374: <table border='0' cellspacing='0' cellpadding='0'> 375: <tr><td><a href='javascript:move($sel,$dsel)'> 376: <img src="${iconpath}move_up.gif" alt='UP' border='0' /></a></td></tr> 377: <tr><td><a href='javascript:move($sel,$usel)'> 378: <img src="${iconpath}move_down.gif" alt='DOWN' border='0' /></a></td></tr> 379: </table> 380: END 381: return $string; 382: } 383: 384: # ------------------------------------------ Select box (returns scalar string) 385: sub select_box { 386: my ($total,$sel) = @_; 387: my $string; 388: $string = '<select name="alt'.$sel.'"'; 389: $string .= " onChange='selectchange($sel)'>"; 390: $string .= "<option name='o0' value='0'>remove</option>"; 391: for my $cur (1..$total) { 392: $string .= "<option name='o$cur' value='$cur'"; 393: if ($cur == $sel) { 394: $string .= "selected"; 395: } 396: $string .= ">$cur</option>"; 397: } 398: $string .= "</select>\n"; 399: return $string; 400: } 401: 402: 1; 403: 404: __END__