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 1.10 2002/05/13 16:00:53 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:
43: my %hash; # variable to tie to user specific database
44: my $iconpath; # variable to be accessible to multiple subroutines
45:
46: # ---------------------------------------------------------------- Main Handler
47: sub handler {
48: my $r = shift;
49:
50: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
51: ['acts','catalogmode','mode']);
52:
53: # color scheme
54: my $fileclr = '#ffffe6';
55: my $titleclr = '#ddffff';
56:
57: $r->content_type('text/html');
58: $r->send_http_header;
59: return OK if $r->header_only;
60:
61: # finish_import looks different for graphical or "simple" RAT
62: my $finishimport='';
63: if ($ENV{'form.mode'} eq 'simple') {
64: $finishimport=(<<ENDSMP);
65: function finish_import() {
66: opener.document.forms.simpleedit.importdetail.value='';
67: for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
68: opener.document.forms.simpleedit.importdetail.value+='&'+
69: escape(eval("document.forms.groupsort.title"+num+".value"))+'='+
70: escape(eval("document.forms.groupsort.filelink"+num+".value"));
71: }
72: opener.document.forms.simpleedit.submit();
73: self.close();
74: }
75: ENDSMP
76: } else {
77: $finishimport=(<<ENDADV);
78: function finish_import() {
79: var linkflag=false;
80: for (var num=0; num<document.forms.groupsort.fnum.value; num++) {
81: insertRowInLastRow();
82: placeResourceInLastRow(
83: eval("document.forms.groupsort.title"+num+".value"),
84: eval("document.forms.groupsort.filelink"+num+".value"),
85: linkflag
86: );
87: linkflag=true;
88: }
89: opener.editmode=0;
90: opener.notclear=0;
91: opener.linkmode=0;
92: opener.draw();
93: self.close();
94: }
95: ENDADV
96: }
97:
98: # output start of web page
99:
100: $r->print(<<END);
101: <html>
102: <head>
103: <title>The LearningOnline Network With CAPA Group Sorter</title>
104: <script language='javascript'>
105: function insertRowInLastRow() {
106: opener.insertrow(opener.maxrow);
107: opener.addobj(opener.maxrow,'e&2');
108: }
109: function placeResourceInLastRow (title,url,linkflag) {
110: opener.newresource(opener.maxrow,2,opener.escape(title),
111: opener.escape(url),'false','normal');
112: opener.save();
113: opener.mostrecent=opener.obj.length-1;
114: if (linkflag) {
115: opener.joinres(opener.linkmode,opener.mostrecent,0);
116: }
117: opener.linkmode=opener.mostrecent;
118: }
119: $finishimport
120: function selectchange(val) {
121: var newval=0+eval("document.forms.groupsort.alt"+val+".selectedIndex");
122: orderchange(val,newval);
123: }
124: function move(val,newval) {
125: orderchange(val,newval);
126: }
127: function orderchange(val,newval) {
128: document.forms.groupsort.oldval.value=val;
129: document.forms.groupsort.newval.value=newval;
130: document.forms.groupsort.submit();
131: }
132: </script>
133: </head>
134: <body bgcolor="#FFFFFF">
135: END
136:
137: # read pertinent machine configuration
138: my $domain = $r->dir_config('lonDefDomain');
139: $iconpath = $r->dir_config('lonIconsURL') . "/";
140:
141: my %shash; # sort order (key is resource location, value is sort order)
142: my %thash; # title (key is resource location, value is title)
143:
144: my $diropendb;
145: if ($ENV{'form.catalogmode'} eq 'groupsearch') {
146: $diropendb =
147: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db";
148: }
149: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
150: $diropendb =
151: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
152: }
153: else { # choose last accessed
154: my $dsearch; my $dindex;
155: my $dsearcht; my $dindext;
156: $dsearch =
157: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_searchcat.db";
158: if (-e $dsearch) {
159: $dsearcht=(stat($dsearch))[9];
160: }
161: $dindex =
162: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
163: if (-e $dindex) {
164: $dindext=(stat($dindex))[9];
165: }
166: if (!$dsearcht and !$dindext) {
167: $diropendb='';
168: }
169: elsif ($dsearcht>$dindext) {
170: $diropendb=$dsearch;
171: }
172: else {
173: $diropendb=$dindex;
174: }
175: }
176: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
177: my $acts = $ENV{'form.acts'};
178: my @Acts = split(/b/,$acts);
179: my %ahash;
180: my %achash;
181: my $ac = 0;
182: foreach (@Acts) {
183: my ($state,$ref) = split(/a/);
184: $ahash{$ref} = $state;
185: $achash{$ref} = $ac;
186: $ac++;
187: }
188: foreach (sort {$achash{$a} <=> $achash{$b}} (keys %ahash)) {
189: my $key = $_;
190: if ($ahash{$key} eq '1') {
191: # my $keyz=join("<br />",keys %hash);
192: # print "<br />$key<br />$keyz".$hash{'pre_'.$key.'_link'}."<br />\n";
193: $hash{'store_'.$hash{'pre_'.$key.'_link'}} =
194: $hash{'pre_'.$key.'_title'};
195: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}} =
196: $hash{'storectr'}+0;
197: $hash{'storectr'}++;
198: }
199: if ($ahash{$key} eq '0') {
200: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
201: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
202: }
203: }
204: }
205: foreach (keys %hash) {
206: if ($_ =~ /^store_/) {
207: my $key = $_;
208: $key =~ s/^store_//;
209: $shash{$key} = $hash{'storectr_'.$key};
210: $thash{$key} = $hash{'store_'.$key};
211: }
212: }
213: if ($ENV{'form.oldval'}) {
214: my $newctr = 0;
215: my %chash;
216: foreach (sort {$shash{$a} <=> $shash{$b}} (keys %shash)) {
217: my $key = $_;
218: $newctr++;
219: $shash{$key} = $newctr;
220: $hash{'storectr_'.$key} = $newctr;
221: $chash{$newctr} = $key;
222: }
223: my $oldval = $ENV{'form.oldval'};
224: my $newval = $ENV{'form.newval'};
225: if ($oldval != $newval) {
226: # when newval==0, then push down and delete
227: if ($newval!=0) {
228: $shash{$chash{$oldval}} = $newval;
229: $hash{'storectr_'.$chash{$oldval}} = $newval;
230: }
231: else {
232: $shash{$chash{$oldval}} = $newctr;
233: $hash{'storectr_'.$chash{$oldval}} = $newctr;
234: }
235: if ($newval==0) { # push down
236: my $newval2=$newctr;
237: for my $idx ($oldval..($newval2-1)) {
238: $shash{$chash{$idx+1}} = $idx;
239: $hash{'storectr_'.$chash{$idx+1}} = $idx;
240: }
241: delete $shash{$chash{$oldval}};
242: delete $hash{'storectr_'.$chash{$oldval}};
243: delete $hash{'store_'.$chash{$oldval}};
244: }
245: elsif ($oldval < $newval) { # push down
246: for my $idx ($oldval..($newval-1)) {
247: $shash{$chash{$idx+1}} = $idx;
248: $hash{'storectr_'.$chash{$idx+1}} = $idx;
249: }
250: }
251: elsif ($oldval > $newval) { # push up
252: for my $idx (reverse($newval..($oldval-1))) {
253: $shash{$chash{$idx}} = $idx+1;
254: $hash{'storectr_'.$chash{$idx}} = $idx+1;
255: }
256: }
257: }
258: }
259: } else {
260: $r->print('Unable to tie hash to db file</body></html>');
261: return OK;
262: }
263: untie %hash;
264: my $ctr = 0;
265: my $clen = scalar(keys %shash);
266: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '.
267: 'Group Sorter</font></h2>'."\n");
268: $r->print('<b><font color="#888888">Finalize order of resources</font>'.
269: '</b>'."\n");
270: $r->print("<form method='post' action='/adm/groupsort' name='groupsort' ".
271: "enctype='application/x-www-form-urlencoded'>");
272: $r->print(<<END);
273: <input type="hidden" name="fnum" value="$clen" />
274: <input type="hidden" name="oldval" value="" />
275: <input type="hidden" name="newval" value="" />
276: END
277: if ($ENV{'form.catalogmode'} eq 'groupimport') {
278: $r->print(<<END);
279: <input type="button" name="alter" value="GO BACK"
280: onClick="window.location='/res/?catalogmode=groupimport'" />
281: END
282: }
283: if ($ENV{'form.catalogmode'} eq 'groupsearch') {
284: $r->print(<<END);
285: <input type="button" name="alter" value="GO BACK"
286: onClick="window.location='/adm/searchcat?catalogmode=groupsearch'" />
287: END
288: }
289: $r->print(<<END);
290: <input type="button" name="alter" value="FINISH IMPORT"
291: onClick="finish_import()" />
292: <input type="button" name="alter" value="CANCEL" onClick="self.close()" />
293: END
294: $r->print("<table border='0'><tr><td bgcolor='#eeeeee'>");
295: $r->print("<table border=0><tr>\n");
296: $r->print("<td colspan='2' bgcolor='$titleclr'><b>Change order</b></td>".
297: "\n");
298: $r->print("<td colspan='2' bgcolor='$titleclr'><b>Title</b></td>\n");
299: $r->print("<td bgcolor='$titleclr'><b>Path</b></td></tr>\n");
300: foreach (sort {$shash{$a}<=>$shash{$b}} (keys %shash)) {
301: my $key=$_;
302: $ctr++;
303: my @file_ext = split(/\./,$key);
304: my $curfext = $file_ext[scalar(@file_ext)-1];
305: $r->print("<tr><td bgcolor='$fileclr'>");
306: $r->print(&movers($clen,$ctr));
307: $r->print(&hidden($ctr-1,$thash{$key},$key));
308: $r->print("</td><td bgcolor='$fileclr'>");
309: $r->print(&select_box($clen,$ctr));
310: $r->print("</td><td bgcolor='$fileclr'>");
311: $r->print("<img src='$iconpath$curfext.gif'>");
312: $r->print("</td><td bgcolor='$fileclr'>");
313: $r->print("$thash{$key}</td><td bgcolor='$fileclr'>\n");
314: $r->print("$key</td></tr>\n");
315: }
316: $r->print("</table></td></tr></table></form>");
317: $r->print(<<END);
318: </body>
319: </html>
320: END
321: return OK;
322: }
323:
324: # --------------------------------------- Hidden values (returns scalar string)
325: sub hidden {
326: my ($sel,$title,$filelink) = @_;
327: my $string = '<input type="hidden" name="title'.$sel.'" value="'.$title.
328: '" />';
329: $string .= '<input type="hidden" name="filelink'.$sel.'" value="'.
330: $filelink.'" />';
331: return $string;
332: }
333:
334: # --------------------------------------- Moving arrows (returns scalar string)
335: sub movers {
336: my ($total,$sel) = @_;
337: my $dsel = $sel-1;
338: my $usel = $sel+1;
339: $usel = 1 if $usel > $total;
340: $dsel = $total if $dsel < 1;
341: my $string;
342: $string = (<<END);
343: <table border='0' cellspacing='0' cellpadding='0'>
344: <tr><td><a href='javascript:move($sel,$dsel)'>
345: <img src="${iconpath}move_up.gif" alt='UP' border='0' /></a></td></tr>
346: <tr><td><a href='javascript:move($sel,$usel)'>
347: <img src="${iconpath}move_down.gif" alt='DOWN' border='0' /></a></td></tr>
348: </table>
349: END
350: return $string;
351: }
352:
353: # ------------------------------------------ Select box (returns scalar string)
354: sub select_box {
355: my ($total,$sel) = @_;
356: my $string;
357: $string = '<select name="alt'.$sel.'"';
358: $string .= " onChange='selectchange($sel)'>";
359: $string .= "<option name='o0' value='0'>remove</option>";
360: for my $cur (1..$total) {
361: $string .= "<option name='o$cur' value='$cur'";
362: if ($cur == $sel) {
363: $string .= "selected";
364: }
365: $string .= ">$cur</option>";
366: }
367: $string .= "</select>\n";
368: return $string;
369: }
370:
371: 1;
372:
373: __END__
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