Annotation of loncom/interface/lonnavdisplay.pm, revision 1.1
1.1 ! albertel 1: # The LearningOnline Network with CAPA
! 2: # Navigate Maps Handler
! 3: #
! 4: # $Id: lonnavmaps.pm,v 1.390 2006/07/25 00:57:51 albertel Exp $
! 5: #
! 6: # Copyright Michigan State University Board of Trustees
! 7: #
! 8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
! 9: #
! 10: # LON-CAPA is free software; you can redistribute it and/or modify
! 11: # it under the terms of the GNU General Public License as published by
! 12: # the Free Software Foundation; either version 2 of the License, or
! 13: # (at your option) any later version.
! 14: #
! 15: # LON-CAPA is distributed in the hope that it will be useful,
! 16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
! 17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! 18: # GNU General Public License for more details.
! 19: #
! 20: # You should have received a copy of the GNU General Public License
! 21: # along with LON-CAPA; if not, write to the Free Software
! 22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
! 23: #
! 24: # /home/httpd/html/adm/gpl.txt
! 25: #
! 26: # http://www.lon-capa.org/
! 27: #
! 28: ###
! 29:
! 30: package Apache::lonnavdisplay;
! 31:
! 32: use strict;
! 33: use Apache::Constants qw(:common :http);
! 34: use Apache::lonmenu();
! 35: use Apache::loncommon();
! 36: use Apache::lonnavmaps();
! 37: use Apache::lonhtmlcommon();
! 38: use Apache::lonnet;
! 39: use Apache::lonlocal;
! 40:
! 41: sub handler {
! 42: my $r = shift;
! 43: real_handler($r);
! 44: }
! 45:
! 46: sub real_handler {
! 47: my $r = shift;
! 48: #my $t0=[&gettimeofday()];
! 49: # Handle header-only request
! 50: if ($r->header_only) {
! 51: if ($env{'browser.mathml'}) {
! 52: &Apache::loncommon::content_type($r,'text/xml');
! 53: } else {
! 54: &Apache::loncommon::content_type($r,'text/html');
! 55: }
! 56: $r->send_http_header;
! 57: return OK;
! 58: }
! 59:
! 60: # Send header, don't cache this page
! 61: if ($env{'browser.mathml'}) {
! 62: &Apache::loncommon::content_type($r,'text/xml');
! 63: } else {
! 64: &Apache::loncommon::content_type($r,'text/html');
! 65: }
! 66: &Apache::loncommon::no_cache($r);
! 67:
! 68: my %toplinkitems=();
! 69: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'blank','',
! 70: "Select Action");
! 71: if ($ENV{QUERY_STRING} eq 'collapseExternal') {
! 72: &Apache::lonnet::put('environment',{'remotenavmap' => 'off'});
! 73: &Apache::lonnet::appenv('environment.remotenavmap' => 'off');
! 74: my $menu=&Apache::lonmenu::reopenmenu();
! 75: my $navstatus=&Apache::lonmenu::get_nav_status();
! 76: if ($menu) {
! 77: $menu=(<<MENU)
! 78: swmenu=$menu
! 79: swmenu.clearTimeout(swmenu.menucltim);
! 80: $navstatus
! 81: MENU
! 82: } else {
! 83: my $nothing = &Apache::lonhtmlcommon::javascript_nothing();
! 84: my $mainwindow='window.open('.$nothing.',"loncapaclient","",false);';
! 85: $menu=(<<MENU)
! 86: swmenu=$mainwindow
! 87: $navstatus
! 88: MENU
! 89: }
! 90: $r->send_http_header;
! 91: my $js =<<"ENDSUBM";
! 92: <script type="text/javascript">
! 93: function submitthis() {
! 94: $menu
! 95: self.close();
! 96: }
! 97:
! 98: </script>
! 99: ENDSUBM
! 100: $r->print(&Apache::loncommon::start_page(undef,$js,
! 101: {'only_body' => 1,
! 102: 'bgcolor' => '#FFFFFF',
! 103: 'add_entries' =>
! 104: {'onload' =>
! 105: "submitthis()"}}).
! 106: &Apache::loncommon::end_page());
! 107:
! 108: return OK;
! 109: }
! 110: if ($ENV{QUERY_STRING} =~ /^launchExternal/) {
! 111: &Apache::lonnet::put('environment',{'remotenavmap' => 'on'});
! 112: &Apache::lonnet::appenv('environment.remotenavmap' => 'on');
! 113: my $menu=&Apache::lonmenu::reopenmenu();
! 114: my $navstatus=&Apache::lonmenu::get_nav_status();
! 115: if ($menu) {
! 116: $r->print(<<MENU);
! 117: <script type="text/javascript">
! 118: swmenu=$menu
! 119: swmenu.clearTimeout(swmenu.menucltim);
! 120: $navstatus
! 121: </script>
! 122: MENU
! 123: }
! 124: }
! 125: if ($ENV{QUERY_STRING} eq 'turningOffExternal') {
! 126: $env{'environment.remotenavmap'}='off';
! 127: }
! 128:
! 129: # Create the nav map
! 130: my $navmap = Apache::lonnavmaps::navmap->new();
! 131:
! 132: if (!defined($navmap)) {
! 133: my $requrl = $r->uri;
! 134: $env{'user.error.msg'} = "$requrl:bre:0:0:Course not initialized";
! 135: return HTTP_NOT_ACCEPTABLE;
! 136: }
! 137: $r->send_http_header;
! 138:
! 139: # ------------------------------------------------------------ Get query string
! 140: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['register','sort','showOnlyHomework','postsymb']);
! 141:
! 142: # ----------------------------------------------------- Force menu registration
! 143: my $body_only='';
! 144: my $js;
! 145: if ($env{'environment.remotenavmap'} eq 'on') {
! 146: $js='<script type="text/javascript">
! 147: function collapse() {
! 148: this.document.location="/adm/navmaps?collapseExternal";
! 149: }
! 150: </script>';
! 151: $body_only=1;
! 152: }
! 153:
! 154: # Header
! 155: my $course_type = &Apache::loncommon::course_type();
! 156: $r->print(&Apache::loncommon::start_page('Navigate '.$course_type.
! 157: ' Contents',
! 158: $js,
! 159: {'only_body' => $body_only,
! 160: 'force_register' =>
! 161: $env{'form.register'},}));
! 162: $r->print('<script type="text/javascript">window.focus();</script>');
! 163:
! 164: $r->rflush();
! 165:
! 166: # Check that it's defined
! 167: if (!($navmap->courseMapDefined())) {
! 168: $r->print(&Apache::loncommon::help_open_menu('Navigation Screen','Navigation_Screen',undef,'RAT'));
! 169: $r->print('<span class="LC_error">'.&mt('Coursemap undefined.').
! 170: '</span>' .
! 171: &Apache::loncommon::end_page());
! 172: return OK;
! 173: }
! 174:
! 175: # See if there's only one map in the top-level, if we don't
! 176: # already have a filter... if so, automatically display it
! 177: # (older code; should use retrieveResources)
! 178: if ($ENV{QUERY_STRING} !~ /filter/) {
! 179: my $iterator = $navmap->getIterator(undef, undef, undef, 0);
! 180: my $curRes;
! 181: my $sequenceCount = 0;
! 182: my $sequenceId;
! 183: while ($curRes = $iterator->next()) {
! 184: if (ref($curRes) && $curRes->is_sequence()) {
! 185: $sequenceCount++;
! 186: $sequenceId = $curRes->map_pc();
! 187: }
! 188: }
! 189:
! 190: if ($sequenceCount == 1) {
! 191: # The automatic iterator creation in the render call
! 192: # will pick this up. We know the condition because
! 193: # the defined($env{'form.filter'}) also ensures this
! 194: # is a fresh call.
! 195: $env{'form.filter'} = "$sequenceId";
! 196: }
! 197: }
! 198:
! 199: if ($ENV{QUERY_STRING} eq 'launchExternal') {
! 200: $r->print('
! 201: <form name="returnwin" action="/adm/flip?postdata=navlaunch%3a"
! 202: method="post" target="loncapaclient">
! 203: </form>');
! 204: $r->print('
! 205: <script type="text/javascript">
! 206: this.document.returnwin.submit();
! 207: </script>');
! 208: }
! 209:
! 210: if ($env{'environment.remotenavmap'} ne 'on') {
! 211: $r->print(&launch_win('link','yes',\%toplinkitems));
! 212: }
! 213: if ($env{'environment.remotenavmap'} eq 'on') {
! 214: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'closenav',
! 215: 'collapse()',
! 216: "Close navigation window");
! 217: }
! 218:
! 219:
! 220: # Check to see if the student is jumping to next open, do-able problem
! 221: if ($ENV{QUERY_STRING} =~ /^jumpToFirstHomework/) {
! 222: # Find the next homework problem that they can do.
! 223: my $iterator = $navmap->getIterator(undef, undef, undef, 1);
! 224: my $curRes;
! 225: my $foundDoableProblem = 0;
! 226: my $minimumduedate;
! 227:
! 228: while ($curRes = $iterator->next()) {
! 229: if (ref($curRes) && $curRes->is_problem()) {
! 230: my $status = $curRes->status();
! 231: if ($curRes->completable()) {
! 232: my $thisduedate=$curRes->duedate();
! 233: unless ($foundDoableProblem) {
! 234: $minimumduedate=$thisduedate;
! 235: }
! 236:
! 237: $foundDoableProblem = 1;
! 238:
! 239: if ($thisduedate<=$minimumduedate) {
! 240: # Pop open all previous maps
! 241: my $stack = $iterator->getStack();
! 242: pop @$stack; # last resource in the stack is the problem
! 243: # itself, which we don't need in the map stack
! 244: my @mapPcs = map {$_->map_pc()} @$stack;
! 245: $env{'form.filter'} = join(',', @mapPcs);
! 246:
! 247: # Mark as both "here" and "jump"
! 248: $env{'form.postsymb'} = $curRes->symb();
! 249: $minimumduedate=$thisduedate;
! 250: }
! 251: }
! 252: }
! 253: }
! 254:
! 255: # If we found no problems, print a note to that effect.
! 256: if (!$foundDoableProblem) {
! 257: $r->print("<font size='+2'>All homework assignments have been completed.</font><br /><br />");
! 258: }
! 259: } else {
! 260: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'firsthomework',
! 261: 'location.href="navmaps?jumpToFirstHomework"',
! 262: "Show my first due problem");
! 263: }
! 264:
! 265: my $suppressEmptySequences = 0;
! 266: my $filterFunc = undef;
! 267: my $resource_no_folder_link = 0;
! 268:
! 269: # Display only due homework.
! 270: my $showOnlyHomework = 0;
! 271: if ($env{'form.showOnlyHomework'} eq "1") {
! 272: $showOnlyHomework = 1;
! 273: $suppressEmptySequences = 1;
! 274: $filterFunc = sub { my $res = shift;
! 275: return $res->completable() || $res->is_map();
! 276: };
! 277: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'everything',
! 278: 'location.href="navmaps?sort='.$env{'form.sort'}.'"',
! 279: "Show everything");
! 280: $r->print("<p><font size='+2'>".&mt("Uncompleted Problems")."</font></p>");
! 281: $env{'form.filter'} = '';
! 282: $env{'form.condition'} = 1;
! 283: $resource_no_folder_link = 1;
! 284: } else {
! 285: &Apache::lonnavmaps::add_linkitem(\%toplinkitems,'uncompleted',
! 286: 'location.href="navmaps?sort='.$env{'form.sort'}.
! 287: '&showOnlyHomework=1"',
! 288: "Show only uncompleted problems");
! 289: }
! 290:
! 291: my %selected=($env{'form.sort'} => 'selected=on');
! 292: my $sort_html=("<form>
! 293: <nobr>
! 294: <input type=\"hidden\" name=\"showOnlyHomework\" value=\"".$env{'form.showOnlyHomework'}."\" />
! 295: <input type=\"submit\" value=\"".&mt('Sort by:')."\" />
! 296: <select name=\"sort\">
! 297: <option value=\"default\" $selected{'default'}>".&mt('Default')."</option>
! 298: <option value=\"title\" $selected{'title'} >".&mt('Title')."</option>
! 299: <option value=\"duedate\" $selected{'duedate'}>".&mt('Duedate')."</option>
! 300: <option value=\"discussion\" $selected{'discussion'}>".&mt('Has New Discussion')."</option>
! 301: </select>
! 302: </nobr>
! 303: </form>");
! 304: # renderer call
! 305: my $renderArgs = { 'cols' => [0,1,2,3],
! 306: 'sort' => $env{'form.sort'},
! 307: 'url' => '/adm/navmaps',
! 308: 'navmap' => $navmap,
! 309: 'suppressNavmap' => 1,
! 310: 'suppressEmptySequences' => $suppressEmptySequences,
! 311: 'filterFunc' => $filterFunc,
! 312: 'resource_no_folder_link' => $resource_no_folder_link,
! 313: 'sort_html'=> $sort_html,
! 314: 'r' => $r,
! 315: 'caller' => 'navmapsdisplay',
! 316: 'linkitems' => \%toplinkitems};
! 317: my $render = &Apache::lonnavmaps::render($renderArgs);
! 318:
! 319: # If no resources were printed, print a reassuring message so the
! 320: # user knows there was no error.
! 321: if ($renderArgs->{'counter'} == 0) {
! 322: if ($showOnlyHomework) {
! 323: $r->print("<p><font size='+1'>".&mt("All homework is currently completed").".</font></p>");
! 324: } else { # both jumpToFirstHomework and normal use the same: course must be empty
! 325: $r->print("<p><font size='+1'>This course is empty.</font></p>");
! 326: }
! 327: }
! 328: #my $td=&tv_interval($t0);
! 329: #$r->print("<br />$td");
! 330:
! 331: $r->print(&Apache::loncommon::end_page());
! 332: $r->rflush();
! 333:
! 334: return OK;
! 335: }
! 336:
! 337: sub launch_win {
! 338: my ($mode,$script,$toplinkitems,$firsttime)=@_;
! 339: my $result;
! 340: if ($script ne 'no') {
! 341: $result.='<script type="text/javascript">';
! 342: }
! 343: if ($firsttime) {
! 344: $result.='function launch_navmapwin() {
! 345: newWindow=open(\'/adm/navmaps?launchExternalRoles\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
! 346: }';
! 347: } else {
! 348: $result.='function launch_navmapwin() {
! 349: newWindow=open(\'/adm/navmaps?launchExternal\',\'loncapanav\',\'width=400,height=600,scrollbars=1\');
! 350: }';
! 351: }
! 352: if ($mode eq 'now') {
! 353: $result.="\nlaunch_navmapwin();\n";
! 354: }
! 355: if ($script ne 'no') {
! 356: $result.='</script>';
! 357: }
! 358: if ($mode eq 'link') {
! 359: &Apache::lonnavmaps::add_linkitem($toplinkitems,'launchnav',
! 360: 'launch_navmapwin()',
! 361: "Launch navigation window");
! 362: }
! 363: return $result;
! 364: }
! 365:
! 366: 1;
! 367: __END__
! 368:
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