loncom/interface/groupsort.pm - view

File: [LON-CAPA] / loncom / interface / groupsort.pm
Revision 1.17: download - view: text, annotated - select for diffs
Thu Jan 9 22:04:28 2003 UTC (21 years, 4 months ago) by www
Branches: MAIN
CVS tags: version_0_6_2, version_0_6_1, version_0_6, HEAD

Together with the cleanup hander on lonsearchcat.pm, we will hopefully never
see "cannot tie hash" again during group search and group import

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 1.17 2003/01/09 22:04:28 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: untie(%hash) if (tied(%hash)); 49: } 50: 51: # ---------------------------------------------------------------- Main Handler 52: sub handler { 53: my $r = shift; 54: 55: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, 56: ['acts','catalogmode','mode']); 57: # color scheme 58: my $fileclr = '#ffffe6'; 59: my $titleclr = '#ddffff'; 60: 61: $r->content_type('text/html'); 62: $r->send_http_header; 63: return OK if $r->header_only; 64: 65: # finish_import looks different for graphical or "simple" RAT 66: my $finishimport=''; 67: if ($ENV{'form.mode'} eq 'simple') { 68: $finishimport=(<<ENDSMP); 69: function finish_import() { 70: opener.document.forms.simpleedit.importdetail.value=''; 71: for (var num=0; num<document.forms.groupsort.fnum.value; num++) { 72: opener.document.forms.simpleedit.importdetail.value+='&'+ 73: escape(eval("document.forms.groupsort.title"+num+".value"))+'='+ 74: escape(eval("document.forms.groupsort.filelink"+num+".value")); 75: } 76: opener.document.forms.simpleedit.submit(); 77: self.close(); 78: } 79: ENDSMP 80: } else { 81: $finishimport=(<<ENDADV); 82: function finish_import() { 83: var linkflag=false; 84: for (var num=0; num<document.forms.groupsort.fnum.value; num++) { 85: insertRowInLastRow(); 86: placeResourceInLastRow( 87: eval("document.forms.groupsort.title"+num+".value"), 88: eval("document.forms.groupsort.filelink"+num+".value"), 89: linkflag 90: ); 91: linkflag=true; 92: } 93: opener.editmode=0; 94: opener.notclear=0; 95: opener.linkmode=0; 96: opener.draw(); 97: self.close(); 98: } 99: ENDADV 100: } 101: 102: # output start of web page 103: 104: $r->print(<<END); 105: <html> 106: <head> 107: <title>The LearningOnline Network With CAPA Group Sorter</title> 108: <script language='javascript'> 109: function insertRowInLastRow() { 110: opener.insertrow(opener.maxrow); 111: opener.addobj(opener.maxrow,'e&2'); 112: } 113: function placeResourceInLastRow (title,url,linkflag) { 114: opener.newresource(opener.maxrow,2,opener.escape(title), 115: opener.escape(url),'false','normal'); 116: opener.save(); 117: opener.mostrecent=opener.obj.length-1; 118: if (linkflag) { 119: opener.joinres(opener.linkmode,opener.mostrecent,0); 120: } 121: opener.linkmode=opener.mostrecent; 122: } 123: $finishimport 124: function selectchange(val) { 125: var newval=0+eval("document.forms.groupsort.alt"+val+".selectedIndex"); 126: orderchange(val,newval); 127: } 128: function move(val,newval) { 129: orderchange(val,newval); 130: } 131: function orderchange(val,newval) { 132: document.forms.groupsort.oldval.value=val; 133: document.forms.groupsort.newval.value=newval; 134: document.forms.groupsort.submit(); 135: } 136: </script> 137: </head> 138: END 139: $r->print(&Apache::loncommon::bodytag('Sort Imported Resources')); 140: # read pertinent machine configuration 141: my $domain = $r->dir_config('lonDefDomain'); 142: $iconpath = $r->dir_config('lonIconsURL') . "/"; 143: 144: my %shash; # sort order (key is resource location, value is sort order) 145: my %thash; # title (key is resource location, value is title) 146: 147: my $diropendb; 148: # ------------------------------ which file do we open? Easy if explictly given 149: if ($ENV{'form.catalogmode'} eq 'groupsearch') { 150: $diropendb = 151: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db"; 152: } 153: elsif ($ENV{'form.catalogmode'} eq 'groupimport') { 154: $diropendb = 155: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db"; 156: } 157: elsif ($ENV{'form.catalogmode'} eq 'groupsec') { 158: $diropendb = 159: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_groupsec.db"; 160: } 161: # --------------------- not explicitly given, choose the one most recently used 162: else { # choose last accessed 163: my @dbfn; 164: my @dbst; 165: 166: $dbfn[0] = 167: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db"; 168: $dbst[0]=-1; 169: if (-e $dbfn[0]) { 170: $dbst[0]=(stat($dbfn[0]))[9]; 171: } 172: $dbfn[1] = 173: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db"; 174: $dbst[1]=-1; 175: if (-e $dbfn[1]) { 176: $dbst[1]=(stat($dbfn[1]))[9]; 177: } 178: $dbfn[2] = 179: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_groupsec.db"; 180: $dbst[2]=-1; 181: if (-e $dbfn[2]) { 182: $dbst[2]=(stat($dbfn[2]))[9]; 183: } 184: # Expand here for more modes 185: # .... 186: 187: # Okay, find most recent existing 188: 189: my $newest=0; 190: $diropendb=''; 191: for (my $i=0; $i<=$#dbfn; $i++) { 192: if ($dbst[$i]>$newest) { 193: $newest=$dbst[$i]; 194: $diropendb=$dbfn[$i]; 195: } 196: } 197: 198: } 199: # ----------------------------- diropendb is now the filename of the db to open 200: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) { 201: my $acts = $ENV{'form.acts'}; 202: my @Acts = split(/b/,$acts); 203: my %ahash; 204: my %achash; 205: my $ac = 0; 206: foreach (@Acts) { 207: my ($state,$ref) = split(/a/); 208: $ahash{$ref} = $state; 209: $achash{$ref} = $ac; 210: $ac++; 211: } 212: foreach (sort {$achash{$a} <=> $achash{$b}} (keys %ahash)) { 213: my $key = $_; 214: if ($ahash{$key} eq '1') { 215: # my $keyz=join("<br />",keys %hash); 216: # print "<br />$key<br />$keyz".$hash{'pre_'.$key.'_link'}."<br />\n"; 217: $hash{'store_'.$hash{'pre_'.$key.'_link'}} = 218: $hash{'pre_'.$key.'_title'}; 219: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}} = 220: $hash{'storectr'}+0; 221: $hash{'storectr'}++; 222: } 223: if ($ahash{$key} eq '0') { 224: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) { 225: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}}; 226: } 227: } 228: } 229: foreach (keys %hash) { 230: if ($_ =~ /^store_/) { 231: my $key = $_; 232: $key =~ s/^store_//; 233: $shash{$key} = $hash{'storectr_'.$key}; 234: $thash{$key} = $hash{'store_'.$key}; 235: } 236: } 237: if ($ENV{'form.oldval'}) { 238: my $newctr = 0; 239: my %chash; 240: foreach (sort {$shash{$a} <=> $shash{$b}} (keys %shash)) { 241: my $key = $_; 242: $newctr++; 243: $shash{$key} = $newctr; 244: $hash{'storectr_'.$key} = $newctr; 245: $chash{$newctr} = $key; 246: } 247: my $oldval = $ENV{'form.oldval'}; 248: my $newval = $ENV{'form.newval'}; 249: if ($oldval != $newval) { 250: # when newval==0, then push down and delete 251: if ($newval!=0) { 252: $shash{$chash{$oldval}} = $newval; 253: $hash{'storectr_'.$chash{$oldval}} = $newval; 254: } 255: else { 256: $shash{$chash{$oldval}} = $newctr; 257: $hash{'storectr_'.$chash{$oldval}} = $newctr; 258: } 259: if ($newval==0) { # push down 260: my $newval2=$newctr; 261: for my $idx ($oldval..($newval2-1)) { 262: $shash{$chash{$idx+1}} = $idx; 263: $hash{'storectr_'.$chash{$idx+1}} = $idx; 264: } 265: delete $shash{$chash{$oldval}}; 266: delete $hash{'storectr_'.$chash{$oldval}}; 267: delete $hash{'store_'.$chash{$oldval}}; 268: } 269: elsif ($oldval < $newval) { # push down 270: for my $idx ($oldval..($newval-1)) { 271: $shash{$chash{$idx+1}} = $idx; 272: $hash{'storectr_'.$chash{$idx+1}} = $idx; 273: } 274: } 275: elsif ($oldval > $newval) { # push up 276: for my $idx (reverse($newval..($oldval-1))) { 277: $shash{$chash{$idx}} = $idx+1; 278: $hash{'storectr_'.$chash{$idx}} = $idx+1; 279: } 280: } 281: } 282: } 283: } else { 284: $r->print('Unable to tie hash to db file</body></html>'); 285: return OK; 286: } 287: untie %hash; 288: my $ctr = 0; 289: my $clen = scalar(keys %shash); 290: $r->print(<<END); 291: <b><font color="#888888">Finalize order of resources</font></b> 292: <form method='post' action='/adm/groupsort' name='groupsort' 293: enctype='application/x-www-form-urlencoded'> 294: <input type="hidden" name="fnum" value="$clen" /> 295: <input type="hidden" name="oldval" value="" /> 296: <input type="hidden" name="newval" value="" /> 297: <input type="hidden" name="mode" value="$ENV{'form.mode'}" /> 298: END 299: 300: # --- Expand here if "GO BACK" button desired 301: if ($ENV{'form.catalogmode'} eq 'groupimport') { 302: $r->print(<<END); 303: <input type="button" name="alter" value="GO BACK" 304: onClick="window.location='/res/?catalogmode=groupimport'" />  305: END 306: } 307: if ($ENV{'form.catalogmode'} eq 'groupsearch') { 308: $r->print(<<END); 309: <input type="button" name="alter" value="New Search" 310: onClick="window.location='/adm/searchcat?catalogmode=groupsearch&cleargroupsort=1'" />  311: END 312: } 313: # --- 314: 315: $r->print(<<END); 316: <input type="button" name="alter" value="FINISH IMPORT" 317: onClick="finish_import()" />  318: <input type="button" name="alter" value="CANCEL" onClick="self.close()" /> 319: END 320: $r->print("<table border='0'><tr><td bgcolor='#eeeeee'>"); 321: $r->print("<table border=0><tr>\n"); 322: $r->print("<td colspan='2' bgcolor='$titleclr'><b>Change order</b></td>". 323: "\n"); 324: $r->print("<td colspan='2' bgcolor='$titleclr'><b>Title</b></td>\n"); 325: $r->print("<td bgcolor='$titleclr'><b>Path</b></td></tr>\n"); 326: foreach (sort {$shash{$a}<=>$shash{$b}} (keys %shash)) { 327: my $key=$_; 328: $ctr++; 329: my @file_ext = split(/\./,$key); 330: my $curfext = $file_ext[scalar(@file_ext)-1]; 331: $r->print("<tr><td bgcolor='$fileclr'>"); 332: $r->print(&movers($clen,$ctr)); 333: $r->print(&hidden($ctr-1,$thash{$key},$key)); 334: $r->print("</td><td bgcolor='$fileclr'>"); 335: $r->print(&select_box($clen,$ctr)); 336: $r->print("</td><td bgcolor='$fileclr'>"); 337: $r->print("<img src='$iconpath$curfext.gif'>"); 338: $r->print("</td><td bgcolor='$fileclr'>"); 339: $r->print("$thash{$key}</td><td bgcolor='$fileclr'>\n"); 340: $r->print("$key</td></tr>\n"); 341: } 342: $r->print("</table></td></tr></table></form>"); 343: $r->print(<<END); 344: </body> 345: </html> 346: END 347: return OK; 348: } 349: 350: # --------------------------------------- Hidden values (returns scalar string) 351: sub hidden { 352: my ($sel,$title,$filelink) = @_; 353: my $string = '<input type="hidden" name="title'.$sel.'" value="'.$title. 354: '" />'; 355: $string .= '<input type="hidden" name="filelink'.$sel.'" value="'. 356: $filelink.'" />'; 357: return $string; 358: } 359: 360: # --------------------------------------- Moving arrows (returns scalar string) 361: sub movers { 362: my ($total,$sel) = @_; 363: my $dsel = $sel-1; 364: my $usel = $sel+1; 365: $usel = 1 if $usel > $total; 366: $dsel = $total if $dsel < 1; 367: my $string; 368: $string = (<<END); 369: <table border='0' cellspacing='0' cellpadding='0'> 370: <tr><td><a href='javascript:move($sel,$dsel)'> 371: <img src="${iconpath}move_up.gif" alt='UP' border='0' /></a></td></tr> 372: <tr><td><a href='javascript:move($sel,$usel)'> 373: <img src="${iconpath}move_down.gif" alt='DOWN' border='0' /></a></td></tr> 374: </table> 375: END 376: return $string; 377: } 378: 379: # ------------------------------------------ Select box (returns scalar string) 380: sub select_box { 381: my ($total,$sel) = @_; 382: my $string; 383: $string = '<select name="alt'.$sel.'"'; 384: $string .= " onChange='selectchange($sel)'>"; 385: $string .= "<option name='o0' value='0'>remove</option>"; 386: for my $cur (1..$total) { 387: $string .= "<option name='o$cur' value='$cur'"; 388: if ($cur == $sel) { 389: $string .= "selected"; 390: } 391: $string .= ">$cur</option>"; 392: } 393: $string .= "</select>\n"; 394: return $string; 395: } 396: 397: 1; 398: 399: __END__