Annotation of loncom/interface/lonwizard.pm, revision 1.5
1.1 bowersj2 1: # This is the LON-CAPA HTML Wizard framework, for wrapping easy
2: # functionality easily.
3:
4: package Apache::lonwizard;
5:
6: use Apache::Constants qw(:common :http);
7: use Apache::loncommon;
1.4 bowersj2 8: use Apache::lonnet;
1.1 bowersj2 9:
10: =head1 lonwizard - HTML "Wizard" framework for LON-CAPA
11:
12: I know how most developers feel about Wizards, but the fact is they are a well-established UI widget that users feel comfortable with. It can take a complicated multi-dimensional problem the user has (such as the canonical Course Parameter example) and turn in into a series of bite-sized one-dimensional questions. Or take the some four-question form and put it in a Wizard, and present the same user with the same form outside of the Wizard, and the user will *think* the Wizard is easier.
13:
14: For the developer, wizards do provide an easy way to bundle easy bits of functionality for the user. It can be easier to write a Wizard then provide another custom interface.
15:
16: All classes are in the Apache::lonwizard namespace.
17:
18: (For a perldoc'ed example of a wizard you can use as an example, see loncourseparmwizard.pm.)
19:
20: =cut
21:
22: # To prevent runaway file counts, this file has lonwizard,
23: # lonwizstate, and other wizard classes.
24: use strict;
25:
26: use HTML::Entities;
27:
28: =pod
29:
30: =head1 Class: lonwizard
31:
32: =head2 lonwizard Attributes
33:
34: =over 4
35:
36: =item B<STATE>: The string name of the current state.
37:
38: =item B<TITLE>: The human-readable title of the wizard
39:
40: =item B<STATES>: A hash mapping the string names of states to references to the actual states.
41:
42: =item B<VARS>: Hash that maintains the persistent variable values.
43:
44: =item B<HISTORY>: An array containing the names of the previous states. Used for "back" functionality.
45:
46: =item B<DONE>: A boolean value, true if the wizard has completed.
47:
48: =back
49:
50: =cut
51:
52: sub new {
53: my $proto = shift;
54: my $class = ref($proto) || $proto;
55: my $self = {};
56:
57: # If there is a state from the previous form, use that. If there is no
58: # state, use the start state parameter.
59: if (defined $ENV{"form.CURRENT_STATE"})
60: {
61: $self->{STATE} = $ENV{"form.CURRENT_STATE"};
62: }
63: else
64: {
65: $self->{STATE} = "START";
66: }
67:
68: # set up return URL: Return the user to the referer page, unless the
69: # form has stored a value.
70: if (defined $ENV{"form.RETURN_PAGE"})
71: {
72: $self->{RETURN_PAGE} = $ENV{"form.RETURN_PAGE"};
73: }
74: else
75: {
76: $self->{RETURN_PAGE} = $ENV{REFERER};
77: }
78:
79: $self->{TITLE} = shift;
80: $self->{STATES} = {};
81: $self->{VARS} = {};
82: $self->{HISTORY} = {};
83: $self->{DONE} = 0;
84: bless($self, $class);
85: return $self;
86: }
87:
88: =pod
89:
90: =head2 lonwizard methods
91:
92: =over 2
93:
1.3 bowersj2 94: =item * B<new>(title): Returns a new instance of the given wizard type. "title" is the human-readable name of the wizard. A new wizard always starts on the B<START> state name.
1.1 bowersj2 95:
1.3 bowersj2 96: =item * B<declareVars>(varList): Call this function to declare the var names you want the wizard to maintain for you. The wizard will automatically output the hidden form fields and parse the values for you on the next call. This is a bulk declaration.
1.1 bowersj2 97:
98: =over 2
99:
100: =item Note that these variables are reserved for the wizard; if you output other form values in your state, you must use other names. For example, declaring "student" will cause the wizard to emit a form value with the name "student"; if your state emits form entries, do not name them "student".
101:
102: =back
103:
104: =cut
105:
106: sub declareVars {
107: my $self = shift;
108: my $varlist = shift;
109:
110: # for each string in the passed in list,
111: foreach my $element ( @{$varlist} )
112: {
113: # assign the var the default of ""
114: $self->{VARS}{$element} = "";
115:
116: # if there's a form in the env, use that instead
117: my $envname = "form." . $element;
118: if (defined ($ENV{$envname}))
119: {
120: $self->{VARS}->{$element} = $ENV{$envname};
121: }
122: }
123: }
124:
125: # Private function; takes all of the declared vars and returns a string
126: # corresponding to the hidden input fields that will re-construct the
127: # variables.
128: sub _saveVars {
129: my $self = shift;
130: my $result = "";
131: foreach my $varname (keys %{$self->{VARS}})
132: {
133: $result .= '<input type="hidden" name="' .
134: HTML::Entities::encode($varname) . '" value="' .
135: HTML::Entities::encode($self->{VARS}{$varname}) .
136: "\" />\n";
137: }
138:
139: # also save state & return page
140: $result .= '<input type="hidden" name="CURRENT_STATE" value="' .
141: HTML::Entities::encode($self->{STATE}) . '" />' . "\n";
142: $result .= '<input type="hidden" name="RETURN_PAGE" value="' .
143: HTML::Entities::encode($self->{RETURN_PAGE}) . '" />' . "\n";
144:
145: return $result;
146: }
147:
148: =pod
149:
150: =item B<registerState>(referenceToStateObj): Registers a state as part of the wizard, so the wizard can use it. The 'referenceToStateObj' should be a reference to an instantiated lonwizstate object. This is normally called at the end of the lonwizstate constructor.
151:
152: =cut
153:
154: sub registerState {
155: my $self = shift;
156: my $state = shift;
157:
158: my $stateName = $state->name();
159: $self->{STATES}{$stateName} = $state;
160: }
161:
162: =pod
163:
164: =item B<changeState>(stateName): Given a string representing the name of some registered state, this causes the wizard to change to that state. Generally, states will call this.
165:
166: =cut
167:
168: sub changeState {
169: my $self = shift;
170: $self->{STATE} = shift;
171: }
172:
173: =pod
174:
175: =item B<display>(): This is the main method that the handler using the wizard calls.
176:
177: =cut
178:
179: # Done in five phases
180: # 1: Do the post processing for the previous state.
181: # 2: Do the preprocessing for the current state.
182: # 3: Check to see if state changed, if so, postprocess current and move to next.
183: # Repeat until state stays stable.
184: # 4: Render the current state to the screen as an HTML page.
185: sub display {
186: my $self = shift;
187:
188: my $result = "";
189:
190: # Phase 1: Post processing for state of previous screen (which is actually
191: # the current state), if it wasn't the beginning state.
192: if ($self->{STATE} ne "START" || $ENV{"form.SUBMIT"} eq "Next ->")
193: {
194: my $prevState = $self->{STATES}{$self->{STATE}};
195: $prevState->postprocess();
196: }
197:
198: # Note, to handle errors in a state's input that a user must correct,
199: # do not transition in the postprocess, and force the user to correct
200: # the error.
201:
202: # Phase 2: Preprocess current state
203: my $startState = $self->{STATE};
204: my $state = $self->{STATES}{$startState};
1.3 bowersj2 205:
206: # Error checking
207: if (!defined($state)) {
208: $result .="Error! The state ". $startState ." is not defined.";
209: return $result;
210: }
1.1 bowersj2 211: $state->preprocess();
212:
213: # Phase 3: While the current state is different from the previous state,
214: # keep processing.
215: while ( $startState ne $self->{STATE} )
216: {
217: $startState = $self->{STATE};
218: $state = $self->{STATES}{$startState};
219: $state->preprocess();
220: }
221:
222: # Phase 4: Display.
223: my $stateTitle = $state->title();
1.3 bowersj2 224: my $bodytag = &Apache::loncommon::bodytag("$self->{TITLE}",'','');
1.1 bowersj2 225:
226: $result .= <<HEADER;
227: <html>
228: <head>
1.3 bowersj2 229: <title>LON-CAPA Wizard: $self->{TITLE}</title>
1.1 bowersj2 230: </head>
1.3 bowersj2 231: $bodytag
232: HEADER
233: if (!$state->overrideForm()) { $result.="<form method='GET'>"; }
234: $result .= <<HEADER;
235: <table border="0"><tr><td>
236: <h2><i>$stateTitle</i></h2>
1.1 bowersj2 237: HEADER
238:
1.3 bowersj2 239: if (!$state->overrideForm()) {
240: $result .= $self->_saveVars();
241: }
1.1 bowersj2 242: $result .= $state->render() . "<p> </p>";
243:
1.3 bowersj2 244: if (!$state->overrideForm()) {
245: $result .= '<center>';
246: if ($self->{STATE} ne $self->{START_STATE})
247: {
248: #$result .= '<input name="SUBMIT" type="submit" value="<- Previous" /> ';
249: }
250: if ($self->{DONE})
251: {
252: my $returnPage = $self->{RETURN_PAGE};
253: $result .= "<a href=\"$returnPage\">End Wizard</a>";
254: }
255: else
256: {
1.4 bowersj2 257: $result .= '<input name="back" type="button" ';
258: $result .= 'value="<- Previous" onclick="history.go(-1)" /> ';
1.3 bowersj2 259: $result .= '<input name="SUBMIT" type="submit" value="Next ->" />';
260: }
261: $result .= "</center>\n";
1.1 bowersj2 262: }
263:
264: $result .= <<FOOTER;
1.3 bowersj2 265: </td>
266: </tr>
267: </table>
1.1 bowersj2 268: </form>
269: </body>
270: </html>
271: FOOTER
1.3 bowersj2 272:
273: return $result;
1.1 bowersj2 274: }
275:
276: =pod
277:
278: =item B<name>([name]): Returns the name of the wizard. If a parameter is passed, that will be saved as the name.
279:
280: =cut
281:
282: # Returns/sets the name of this wizard, i.e., "Assignment Parameter"
283: sub title {
284: my $self = shift;
285: if (@_) { $self->{TITLE} = shift};
286: return $self->{TITLE};
287: }
288:
289: =pod
290:
291: =item B<getVars>(): Returns a hash reference containing the stored vars for this wizard. The states use this for variables maintained across states. Example: C<my %vars = %{$wizard-E<gt>getVars()};> This provides read-only access, apparently.
292:
293: =cut
294:
295: sub getVars {
296: my $self = shift;
297: return ($self->{VARS});
298: }
299:
300: =pod
301:
302: =item B<setVar>(key, val): Sets the var named "key" to "val" in the wizard's form array.
303:
304: =cut
305:
1.3 bowersj2 306: # This may look trivial, but it's here as a hook for possible later processing
1.1 bowersj2 307: sub setVar {
308: my $self = shift;
309: my $key = shift;
310: my $val = shift;
311: $self->{VARS}{$key} = $val;
312: }
313:
314: =pod
315:
1.4 bowersj2 316: =item B<queryStringVars>(): Returns a string representing the current state of the wizard, suitable for use directly as part of a query string. (See resource_state for an example.)
317:
318: =cut
319:
320: sub queryStringVars {
321: my $self = shift;
322:
323: my @queryString = ();
324:
325: for my $varname (keys %{$self->{VARS}}) {
326: push @queryString, Apache::lonnet::escape($varname) . "=" .
327: Apache::lonnet::escape($self->{VARS}{$varname});
328: }
329: push @queryString, 'CURRENT_STATE=' . Apache::lonnet::escape($self->{STATE});
330: push @queryString, 'RETURN_PAGE=' . Apache::lonnet::escape($self->{RETURN_PAGE});
331:
332: return join '&', @queryString;
333: }
334:
335: =pod
336:
1.1 bowersj2 337: =item B<setDone>(): If a state calls this, the wizard will consider itself completed. The state should display a friendly "Done" message, and the wizard will display a link returning the user to the invoking page, rather then a "Next" button.
338:
339: =cut
340:
341:
342: # A temp function for debugging
343: sub handler {
344: my $r = shift;
345:
346: Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
347:
1.3 bowersj2 348: if ($r->header_only) {
349: if ($ENV{'browser.mathml'}) {
350: $r->content_type('text/xml');
351: } else {
352: $r->content_type('text/html');
353: }
354: $r->send_http_header;
355: return OK;
356: }
357:
358: # Send header, don't cache this page
359: if ($ENV{'browser.mathml'}) {
360: $r->content_type('text/xml');
361: } else {
362: $r->content_type('text/html');
363: }
364: &Apache::loncommon::no_cache($r);
365: $r->send_http_header;
366: $r->rflush();
367:
368: my $mes = <<WIZBEGIN;
369: <p>This wizard will allow you to</p>
370:
371: <ul>
372: <li>Change assignment parameters, such as due date or open date...</li>
373: <li>... for a whole class</li>
374: <li>... for a whole section</li>
375: <li>... for an individual student</li>
376: <li>... by folder</li>
377: <li>... by individual assignment</li>
378: </ul>
1.1 bowersj2 379:
1.3 bowersj2 380: <p>After the wizard is done, you will be shown where in the advanced interface you would have gone to change the parameter you have chosen, so in the future you can do it directly.</p>
381: WIZBEGIN
1.1 bowersj2 382:
1.3 bowersj2 383: my $wizard = Apache::lonwizard->new("Course Parameter Wizard");
384: $wizard->declareVars(['ACTION_TYPE', 'GRANULARITY', 'TARGETS', 'PARM_DATE', 'RESOURCE_ID', 'USER_NAME', 'SECTION_NAME']);
385: my %dateTypeHash = ('open_date' => "Opening Date",
386: 'due_date' => "Due Date",
387: 'answer_date' => "Answer Date");
388:
389: Apache::lonwizard::message_state->new($wizard, "START", "Welcome to the Assignment Parameter Wizard", $mes, "CHOOSE_ACTION");
390: Apache::lonwizard::switch_state->new($wizard, "CHOOSE_ACTION", "What do you want to do?", "ACTION_TYPE", [
391: ["open_date", "Set an Open Date for a problem", "CHOOSE_LEVEL"],
392: ["due_date", "Set a Due Date for a problem", "CHOOSE_LEVEL"],
393: ["answer_date", "Set an Answer Open Date for a problem", "CHOOSE_LEVEL" ] ]);
394: Apache::lonwizard::switch_state->new($wizard, "CHOOSE_LEVEL", "Parameter Granularity", "GRANULARITY", [
395: ["whole_course", "Set for Whole Course", "CHOOSE_STUDENT_LEVEL"],
396: ["map", "Set for a Folder/Map", "CHOOSE_FOLDER"],
397: ["resource", "Set for a Particular Problem", "CHOOSE_RESOURCE"]],
398: "How general should this setting be?");
399: Apache::lonwizard::resource_choice->new($wizard, "CHOOSE_FOLDER", "Select Folder", "", "", "CHOOSE_STUDENT_LEVEL", "RESOURCE_ID", sub {my $res = shift; return $res->is_map();});
400: Apache::lonwizard::resource_choice->new($wizard, "CHOOSE_RESOURCE", "Select Resource", "", "", "CHOOSE_STUDENT_LEVEL", "RESOURCE_ID", sub {my $res = shift; return $res->is_map() || $res->is_problem();}, sub {my $res = shift; return $res->is_problem(); });
401: Apache::lonwizard::switch_state->new($wizard, "CHOOSE_STUDENT_LEVEL", "Parameter Targets", "TARGETS", [
1.5 ! albertel 402: ["course", "Set for All Studen####n Course", "CHOOSE_DATE"],
1.3 bowersj2 403: ["section", "Set for Section", "CHOOSE_SECTION"],
404: ["student", "Set for an Individual Student", "CHOOSE_STUDENT"]],
405: "Whom should this setting affect?");
406:
407: my $dateType = $dateTypeHash{$wizard->{VARS}->{ACTION_TYPE}};
408: Apache::lonwizard::choose_section->new($wizard, "CHOOSE_SECTION", "Select Section", "Please select the section you wish to set the $dateType for:", "", "CHOOSE_DATE", "SECTION_NAME");
409: Apache::lonwizard::choose_student->new($wizard, "CHOOSE_STUDENT", "Select Student", "Please select the student you wish to set the $dateType for:", "", "CHOOSE_DATE", "USER_NAME");
410: Apache::lonwizard::date_state->new($wizard, "CHOOSE_DATE", "Set Date", "PARM_DATE", "FINISH", "What should the $dateType be set to?");
411: Apache::lonwizard::parmwizfinal->new($wizard, "FINISH", "Confirm Selection");
412:
1.1 bowersj2 413: $r->print($wizard->display());
414:
415: return OK;
416: }
417:
418:
419:
420: 1;
421:
422: =head1 Class: lonwizstate
423:
424: A "lonwizstate" object represents a lonwizard state. A "state" is basically what is visible on the screen. For instance, a state may display a radio button dialog with three buttons, and wait for the user to choose one.
425:
426: Several pre-prepared child classes are include in lonwizard. If you create a new wizard type, be sure to add it to lonwizard.pm so others can use it too.
427:
1.3 bowersj2 428: It is importent to remember when constructing states that the user may use the "Previous" button to go back and revisit a state previously filled out. Thus, states should consult the wizard variables they are intended to set to see if the user has already selected something, and when displaying themselves should reselect the same values, such that the user paging from the end to the beginning, back to the end, will not change any settings.
429:
430: None of the pre-packaged states correctly handle there being B<no> input, as the wizard does not currently have any protection against errors in the states themselves. (The closest thing you can do is set the wizard to be done and display an error message, which should be adequate.)
431:
1.1 bowersj2 432: =head2 lonwizstate methods
433:
434: These methods should be overridden in derived states, except B<new> which may be sufficient.
435:
436: =over 2
437:
438: =item B<new> (parentLonWizReference, stateName, stateTitle): Creates a new state and returns it. The first argument is a reference to the parent wizard. The second is the name of the state, which I<must> be unique. The third is the title, which will be displayed on the screen to the human.
439:
440: =item B<preprocess>(): preprocess sets up all of the information the state needs to do its job, such as querying data bases to obtain lists of choices, and sets up data for the render method. If preprocess decides to jump to a new state, it is responsible for manually running post-process, if it so desires.
441:
442: =over 2
443:
444: =item If this method calls the parent lonwizard's B<changeState> method to another state, then the state will never be rendered on the screen, and the wizard will move to the specified state. This is useful if the state may only be necessary to clarify an ambiguous input, such as selecting a part from a multi-part problem, which isn't necessary if the problem only has one state.
445:
446: =back
447:
448: =item B<render>(): render returns a string of itself to be rendered to the screen, which the wizard will display.
449:
450: =back
451:
452: =cut
453:
454: package Apache::lonwizard::state;
455:
456: use strict;
457:
458: sub new {
459: my $proto = shift;
460: my $class = ref($proto) || $proto;
461: my $self = {};
462: $self->{WIZARD} = shift;
463: $self->{NAME} = shift;
464: $self->{TITLE} = shift;
465:
466: bless($self);
467:
468: $self->{WIZARD}->registerState($self);
469: return $self;
470: }
471:
472: sub name {
473: my $self = shift;
474: if (@_) { $self->{NAME} = shift};
475: return $self->{NAME};
476: }
477:
478: sub title {
479: my $self = shift;
480: if (@_) { $self->{TITLE} = shift};
481: return $self->{TITLE};
482: }
483:
484: sub preprocess {
485: return 1;
486: }
487:
488: sub render {
489: return "This is the empty state. If you can see this, it's a bug.\n"
490: }
491:
492: sub postprocess {
493: return 1;
494: }
495:
1.3 bowersj2 496: # If this is 1, the wizard assumes the state will override the
497: # wizard's form, useful for some final states
498: sub overrideForm {
499: return 0;
500: }
501:
1.1 bowersj2 502: 1;
503:
504: =pod
505:
506: =back
507:
508: =head1 Prepackaged States
509:
510: lonwizard provides several pre-packaged states that you can drop into your Wizard and obtain common functionality.
511:
512: =head2 Class: message_state
513:
514: message_state is a state the simply displays a message. It does not do any pre- or postprocessing. It makes a good initial state, which traditionally is a short message telling the user what they are about to accomplish, and may contain warnings or preconditions that should be fulfilled before using the wizard.
515:
516: =over 4
517:
1.3 bowersj2 518: =item overridden method B<new>(parentLonWizReference, stateName, stateTitle, message, nextState): Two new parameters "message" will be the HTML message displayed to the user, and "nextState" is the name of the next state.
1.1 bowersj2 519:
520: =back
521:
522: =cut
523:
524: package Apache::lonwizard::message_state;
525:
526: no strict;
527: @ISA = ("Apache::lonwizard::state");
528: use strict;
529:
530: sub new {
531: my $proto = shift;
532: my $class = ref($proto) || $proto;
533:
1.3 bowersj2 534: # This cute looking statement correctly handles subclassing
1.1 bowersj2 535: my $self = bless $proto->SUPER::new(shift, shift, shift);
536:
537: $self->{MESSAGE} = shift;
538: $self->{NEXT_STATE} = shift;
539:
540: return $self;
541: }
542:
543: sub postprocess {
544: my $self = shift;
545: $self->{WIZARD}->changeState($self->{NEXT_STATE});
546: return 1;
547: }
548:
549: sub render {
550: my $self = shift;
551: return $self->{MESSAGE};
552: }
553:
554: 1;
555:
556: package Apache::lonwizard::choice_state;
557:
558: no strict;
559: @ISA = ("Apache::lonwizard::state");
560: use strict;
561:
562: =pod
563:
564: =head2 Class: choice_state
565:
566: Choice state provides a single choice to the user as a text selection box. You pass it a message and hash containing [human_name] -> [computer_name] entries, and it will display the choices and store the result in the provided variable.
567:
568: If there is only one choice, the state will automatically make it and go to the next state.
569:
570: =over 4
571:
572: =item overridden method B<new>(parentLonWizReference, stateName, stateTitle, messageBefore, messageAfter, nextState, varName, choiceHash): messageBefore is the HTML text that will be displayed before the choice display, messageAfter will display after. Keys will be sorted according to human name. nextState is the state to proceed to after the choice. varName is the name of the wizard var to store the computer_name answer in. choiceHash is the hash described above. It is optional because you may override it.
573:
1.3 bowersj2 574: =back
575:
1.1 bowersj2 576: =cut
577:
1.3 bowersj2 578: sub new {
579: my $proto = shift;
580: my $class = ref($proto) || $proto;
581: my $self = bless $proto->SUPER::new(shift, shift, shift);
582:
583: $self->{MESSAGE_BEFORE} = shift;
584: $self->{MESSAGE_AFTER} = shift;
585: $self->{NEXT_STATE} = shift;
586: $self->{VAR_NAME} = shift;
587: $self->{CHOICE_HASH} = shift;
588: $self->{NO_CHOICES} = 0;
589:
590: return $self;
591: }
592:
1.1 bowersj2 593: sub preprocess {
594: my $self = shift;
1.3 bowersj2 595: my $choices = $self->{CHOICE_HASH};
596: if (!defined($self->{CHOICE_HASH})) {
597: $choices = $self->{CHOICE_HASH} = $self->determineChoices();
598: }
599: my $wizvars = $self->{WIZARD}->getVars();
1.1 bowersj2 600:
1.3 bowersj2 601: my @keys = keys(%$choices);
1.1 bowersj2 602: @keys = sort @keys;
603:
604: if (scalar(@keys) == 0)
605: {
606: # No choices... so prepare to display error message and cancel further execution.
607: $self->{NO_CHOICES} = 1;
1.3 bowersj2 608: $self->{WIZARD}->{DONE} = 1;
1.1 bowersj2 609: return;
610: }
611: if (scalar(@keys) == 1)
612: {
613: # If there is only one choice, pick it and move on.
1.3 bowersj2 614: $wizvars->{$self->{VAR_NAME}} = $choices->{$keys[0]};
1.1 bowersj2 615: $self->{WIZARD}->changeState($self->{NEXT_STATE});
616: return;
617: }
618:
619: # Otherwise, do normal processing in the render routine.
620:
621: return;
622: }
623:
624: sub determineChoices {
625: return {"NO_CHOICE" => "No choices were given."};
626: }
627:
628: sub render {
629: my $self = shift;
630: my $result = "";
631: my $var = $self->{VAR_NAME};
632:
1.3 bowersj2 633: if (defined $self->{ERROR_MSG}) {
634: $result .= '<font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br /><br />';
635: }
636:
637: if (defined $self->{MESSAGE_BEFORE})
1.1 bowersj2 638: {
1.3 bowersj2 639: $result .= $self->{MESSAGE_BEFORE} . '<br /><br />';
1.1 bowersj2 640: }
641:
1.3 bowersj2 642: my $choices = $self->{CHOICE_HASH};
643: my @keys = keys (%$choices);
644:
645: $result .= "<select name=\"$var.forminput\" size=\"10\">\n";
646: foreach (@keys)
647: {
648: $result .= "<option value=\"" . HTML::Entities::encode($choices->{$_})
649: . "\">" . HTML::Entities::encode($_) . "\n";
650: }
651: $result .= "</select>\n\n";
1.1 bowersj2 652:
1.3 bowersj2 653: if (defined $self->{MESSAGE_AFTER})
654: {
655: $result .= '<br /><br />' . $self->{MESSAGE_AFTER};
656: }
657:
658: return $result;
659: }
660:
661: sub postprocess {
662: my $self = shift;
663: my $wizard = $self->{WIZARD};
664: my $formvalue = $ENV{'form.' . $self->{VAR_NAME} . '.forminput'};
665: if ($formvalue) {
666: $wizard->setVar($self->{VAR_NAME}, $formvalue);
667: $wizard->changeState($self->{NEXT_STATE});
668: } else {
669: $self->{ERROR_MSG} = "Can't continue the wizard because you must make"
670: . ' a selection to continue.';
671: }
672: return 1;
673: }
674:
675: package Apache::lonwizard::switch_state;
676:
677: no strict;
678: @ISA = ("Apache::lonwizard::state");
679: use strict;
680:
681: =pod
1.1 bowersj2 682:
1.3 bowersj2 683: =head2 Class; switch_state
684:
685: Switch state provides the ability to present the user with several radio-button choices. The state can store the user response in a wizard variable, and can also send the user to a different state for each selection, which is the intended primary purpose.
686:
687: Each choice may have arbitrary HTML associated with it, which will be used as the label. The first choice will be selected by default.
688:
689: =over 4
690:
691: =item overridden method B<new>(parentLonWizReference, stateName, stateTitle, varName, choiceList, messageBefore, messageAfter): varName is the name of the wizard variable the state will set with the choice made. choiceHash is list reference of a list of list references to three element lists, where the first element is what the wizard var varName will be set to, the second is the HTML that will be displayed for that choice, and the third is the destination state. messageBefore is an optional HTML string that will be placed before the message, messageAfter an optional HTML string that will be placed before.
692:
693: An example of a legit choiceList: C<my $choicelist = [ ["flunk", "Flunk Student", "FLUNK_STATE"], ["pass", "Pass Student", "PASS_STATE"] ];>
694:
695: =back
696:
697: =cut
698:
699: sub new {
700: my $proto = shift;
701: my $class = ref($proto) || $proto;
702: my $self = bless $proto->SUPER::new(shift, shift, shift);
703:
704: $self->{VAR_NAME} = shift;
705: $self->{CHOICE_LIST} = shift;
706: $self->{MESSAGE_BEFORE} = shift;
707: $self->{MESSAGE_AFTER} = shift;
708:
709: return $self;
710: }
711:
712: # Don't need a preprocess step; we assume we know the choices
713:
714: sub render {
715: my $self = shift;
716: my $result = "";
717: my $var = $self->{VAR_NAME};
718: my @choices = @{$self->{CHOICE_LIST}};
719: my $curVal = $self->{WIZARD}->{VARS}->{$var};
720:
721: $result .= $self->{MESSAGE_BEFORE} if (defined $self->{MESSAGE_BEFORE});
722:
723: if (!$curVal) {
724: $curVal = $self->{CHOICE_LIST}->[0]->[0]; # top is default
725: }
726:
727: $result .= "<table>\n\n";
728:
729: foreach my $choice (@choices)
730: {
731: my $value = $choice->[0];
732: my $text = $choice->[1];
733:
734: $result .= "<tr>\n<td width='20'> </td>\n<td>";
735: $result .= "<td valign=\"top\"><input type=\"radio\" name=\"$var.forminput\"";
736: $result .= " checked" if ($value eq $curVal);
737: $result .= " value=\"$value\"></td>\n<td>$text</td>\n</tr>\n\n";
738: }
739:
740: $result .= "<table>\n\n";
741:
742: $result .= $self->{MESSAGE_AFTER} if (defined $self->{MESSAGE_AFTER});
743:
744: return $result;
745: }
746:
747: sub postprocess {
748: my $self = shift;
749: my $wizard = $self->{WIZARD};
750: my $chosenValue = $ENV{"form." . $self->{VAR_NAME} . '.forminput'};
751: $wizard->setVar($self->{VAR_NAME}, $chosenValue)
752: if (defined ($self->{VAR_NAME}));
753:
754: foreach my $choice (@{$self->{CHOICE_LIST}})
755: {
756: if ($choice->[0] eq $chosenValue)
757: {
758: $wizard->changeState($choice->[2]);
759: }
760: }
761: }
762:
763: # If there is only one choice, make it and move on
764: sub preprocess {
765: my $self = shift;
766: my $choiceList = $self->{CHOICE_LIST};
767: my $wizard = $self->{WIZARD};
768:
769: if (scalar(@{$choiceList}) == 1)
770: {
771: my $choice = $choiceList->[0];
772: my $chosenVal = $choice->[0];
773: my $nextState = $choice->[2];
774:
775: $wizard->setVar($self->{VAR_NAME}, $chosenVal)
776: if (defined ($self->{VAR_NAME}));
777: $wizard->changeState($nextState);
778: }
779: }
780:
781: 1;
782:
783: package Apache::lonwizard::date_state;
784:
785: use Time::localtime;
786: use Time::Local;
787: use Time::tm;
788:
789: no strict;
790: @ISA = ("Apache::lonwizard::state");
791: use strict;
792:
793: my @months = ("January", "February", "March", "April", "May", "June", "July",
794: "August", "September", "October", "November", "December");
795:
796: =pod
797:
798: =head2 Class: date_state
799:
800: Date state provides a state for selecting a date/time, as seen in the course parmset wizard.. You can choose to display date entry if that's what you need.
801:
802: =over 4
803:
804: =item overriddent method B<new>(parentLonWizReference, stateName, stateTitle, varName, nextState, messageBefore, messageAfter, displayJustDate): varName is where the date/time will be stored as seconds since the epoch. messageBefore and messageAfter as other states. displayJustDate is a flag defaulting to false that if true, will only display the date selection (defaulting to midnight on that date). Otherwise, minutes and hours will be shown.
805:
806: =back
807:
808: =cut
809:
810: sub new {
811: my $proto = shift;
812: my $class = ref($proto) || $proto;
813: my $self = bless $proto->SUPER::new(shift, shift, shift);
814:
815: $self->{VAR_NAME} = shift;
816: $self->{NEXT_STATE} = shift;
817: $self->{MESSAGE_BEFORE} = shift;
818: $self->{MESSAGE_AFTER} = shift;
819: $self->{DISPLAY_JUST_DATE} = shift;
820: if (!defined($self->{DISPLAY_JUST_DATE})) {$self->{DISPLAY_JUST_DATE} = 0;}
821: return $self;
822: }
823:
824: sub render {
825: my $self = shift;
826: my $result = "";
827: my $var = $self->{VAR_NAME};
828: my $name = $self->{NAME};
829: my $wizvars = $self->{WIZARD}->getVars();
830:
831: my $date;
832:
833: # Pick default date: Now, or previous choice
834: if (defined ($wizvars->{$var}) && $wizvars->{$var} ne "")
835: {
836: $date = localtime($wizvars->{$var});
837: }
838: else
1.1 bowersj2 839: {
1.3 bowersj2 840: $date = localtime();
841: }
842:
843: if (defined $self->{ERROR_MSG}) {
844: $result .= '<font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br /><br />';
845: }
846:
847: if (defined ($self->{MESSAGE_BEFORE})) {
848: $result .= $self->{MESSAGE_BEFORE};
849: $result .= "<br /><br />\n\n";
850: }
851:
852: # Month
853: my $i;
854: $result .= "<select name='$self->{VAR_NAME}month'>\n";
855: for ($i = 0; $i < 12; $i++) {
856: if ($i == $date->mon) {
857: $result .= "<option value='$i' selected>";
858: } else {
859: $result .= "<option value='$i'>";
860: }
1.5 ! albertel 861: $result .= $months[$i] . "\n";
1.3 bowersj2 862: }
863: $result .= "</select>\n";
864:
865: # Day
866: $result .= "<select name='$self->{VAR_NAME}day'>\n";
867: for ($i = 1; $i < 32; $i++) {
868: if ($i == $date->mday) {
869: $result .= '<option selected>';
870: } else {
871: $result .= '<option>';
872: }
873: $result .= "$i\n";
874: }
875: $result .= "</select>,\n";
876:
877: # Year
878: $result .= "<select name='$self->{VAR_NAME}year'>\n";
879: for ($i = 2000; $i < 2030; $i++) { # update this after 64-bit dates
880: if ($date->year + 1900 == $i) {
881: $result .= "<option selected>";
882: } else {
883: $result .= "<option>";
884: }
885: $result .= "$i\n";
886: }
887: $result .= "</select>,\n";
888:
889: # Display Hours and Minutes if they are called for
890: if (!$self->{DISPLAY_JUST_DATE}) {
891: $result .= "<select name='$self->{VAR_NAME}hour'>\n";
892: if ($date->hour == 12) { $result .= "<option selected>12\n"; }
893: else { $result .= "<option>12\n" }
894: for ($i = 1; $i < 12; $i++) {
895: if (($date->hour) % 12 == $i % 12) {
896: $result .= "<option selected>";
897: } else {
898: $result .= "<option>";
899: }
900: $result .= "$i\n";
901: }
902: $result .= "</select> :\n";
903:
904: $result .= "<select name='$self->{VAR_NAME}minute'>\n";
905: for ($i = 0; $i < 60; $i++) {
906: if ($date->min == $i) {
907: $result .= "<option selected>";
908: } else {
909: $result .= "<option>";
910: }
911: $result .= "$i\n";
912: }
913: $result .= "</select>\n";
914:
915: $result .= "<select name='$self->{VAR_NAME}meridian'>\n";
916: if ($date->hour < 12) {
917: $result .= "<option selected>A.M.\n<option>P.M.\n";
918: } else {
919: $result .= "<option>A.M.\n<option selected>P.M.\n";
920: }
921: $result .= "</select>";
922: }
923:
924: if (defined ($self->{MESSAGE_AFTER})) {
925: $result .= "<br /><br />" . $self->{MESSAGE_AFTER};
1.1 bowersj2 926: }
927:
928: return $result;
929: }
930:
1.3 bowersj2 931: # Stick the date stored into the chosen variable.
1.1 bowersj2 932: sub postprocess {
933: my $self = shift;
934: my $wizard = $self->{WIZARD};
1.3 bowersj2 935:
936: my $month = $ENV{'form.' . $self->{VAR_NAME} . 'month'};
937: my $day = $ENV{'form.' . $self->{VAR_NAME} . 'day'};
938: my $year = $ENV{'form.' . $self->{VAR_NAME} . 'year'};
939: my $min = 0;
940: my $hour = 0;
941: if (!$self->{DISPLAY_JUST_DATE}) {
942: $min = $ENV{'form.' . $self->{VAR_NAME} . 'minute'};
943: $hour = $ENV{'form.' . $self->{VAR_NAME} . 'hour'};
944: }
945:
946: my $chosenDate = Time::Local::timelocal(0, $min, $hour, $day, $month, $year);
947: # Check to make sure that the date was not automatically co-erced into a
948: # valid date, as we want to flag that as an error
949: # This happens for "Feb. 31", for instance, which is coerced to March 2 or
950: # 3, depending on if it's a leapyear
951: my $checkDate = localtime($chosenDate);
952:
953: if ($checkDate->mon != $month || $checkDate->mday != $day ||
954: $checkDate->year + 1900 != $year) {
955: $self->{ERROR_MSG} = "Can't use " . $months[$month] . " $day, $year as a "
956: . "date because it doesn't exist. Please enter a valid date.";
957: return;
958: }
959:
960: $wizard->setVar($self->{VAR_NAME}, $chosenDate);
961:
1.1 bowersj2 962: $wizard->changeState($self->{NEXT_STATE});
1.3 bowersj2 963: }
964:
965: 1;
966:
967: package Apache::lonwizard::parmwizfinal;
968:
969: # This is the final state for the parmwizard. It is not generally useful,
970: # so it is not perldoc'ed. It does it's own processing.
971:
972: no strict;
973: @ISA = ('Apache::lonwizard::state');
974: use strict;
975:
976: use Time::localtime;
977:
978: sub new {
979: my $proto = shift;
980: my $class = ref($proto) || $proto;
981: my $self = bless $proto->SUPER::new(shift, shift, shift);
982:
983: # No other variables because it gets it all from the wizard.
984: }
985:
986: # Renders a form that, when submitted, will form the input to lonparmset.pm
987: sub render {
988: my $self = shift;
989: my $wizard = $self->{WIZARD};
990: my $wizvars = $wizard->{VARS};
991:
992: # FIXME: Unify my designators with the standard ones
993: my %dateTypeHash = ('open_date' => "Opening Date",
994: 'due_date' => "Due Date",
995: 'answer_date' => "Answer Date");
996: my %parmTypeHash = ('open_date' => "0_opendate",
997: 'due_date' => "0_duedate",
998: 'answer_date' => "0_answerdate");
999:
1000: my $result = "<form method='get' action='/adm/parmset'>\n";
1001: $result .= '<p>Confirm that this information is correct, then click "Finish Wizard" to complete setting the parameter.<ul>';
1002: my $affectedResourceId = "";
1003: my $parm_name = $parmTypeHash{$wizvars->{ACTION_TYPE}};
1004: my $level = "";
1005:
1006: # Print the type of manipulation:
1007: $result .= '<li>Setting the <b>' . $dateTypeHash{$wizvars->{ACTION_TYPE}}
1008: . "</b></li>\n";
1009: if ($wizvars->{ACTION_TYPE} eq 'due_date' ||
1010: $wizvars->{ACTION_TYPE} eq 'answer_date') {
1011: # for due dates, we default to "date end" type entries
1012: $result .= "<input type='hidden' name='recent_date_end' " .
1013: "value='" . $wizvars->{PARM_DATE} . "' />\n";
1014: $result .= "<input type='hidden' name='pres_value' " .
1015: "value='" . $wizvars->{PARM_DATE} . "' />\n";
1016: $result .= "<input type='hidden' name='pres_type' " .
1017: "value='date_end' />\n";
1018: } elsif ($wizvars->{ACTION_TYPE} eq 'open_date') {
1019: $result .= "<input type='hidden' name='recent_date_start' ".
1020: "value='" . $wizvars->{PARM_DATE} . "' />\n";
1021: $result .= "<input type='hidden' name='pres_value' " .
1022: "value='" . $wizvars->{PARM_DATE} . "' />\n";
1023: $result .= "<input type='hidden' name='pres_type' " .
1024: "value='date_start' />\n";
1025: }
1026:
1027: # Print the granularity, depending on the action
1028: if ($wizvars->{GRANULARITY} eq 'whole_course') {
1029: $result .= '<li>for <b>all resources in the course</b></li>';
1030: $level = 9; # general course, see lonparmset.pm perldoc
1031: $affectedResourceId = "0.0";
1032: } elsif ($wizvars->{GRANULARITY} eq 'map') {
1033: my $navmap = Apache::lonnavmaps::navmap->new(
1034: $ENV{"request.course.fn"}.".db",
1035: $ENV{"request.course.fn"}."_parms.db", 0, 0);
1036: my $res = $navmap->getById($wizvars->{RESOURCE_ID});
1037: my $title = $res->compTitle();
1038: $navmap->untieHashes();
1039: $result .= "<li>for the map named <b>$title</b></li>";
1040: $level = 8;
1041: $affectedResourceId = $wizvars->{RESOURCE_ID};
1042: } else {
1043: my $navmap = Apache::lonnavmaps::navmap->new(
1044: $ENV{"request.course.fn"}.".db",
1045: $ENV{"request.course.fn"}."_parms.db", 0, 0);
1046: my $res = $navmap->getById($wizvars->{RESOURCE_ID});
1047: my $title = $res->compTitle();
1048: $navmap->untieHashes();
1049: $result .= "<li>for the resource named <b>$title</b></li>";
1050: $level = 7;
1051: $affectedResourceId = $wizvars->{RESOURCE_ID};
1052: }
1053:
1054: # Print targets
1055: if ($wizvars->{TARGETS} eq 'course') {
1056: $result .= '<li>for <b>all students in course</b></li>';
1057: } elsif ($wizvars->{TARGETS} eq 'section') {
1058: my $section = $wizvars->{SECTION_NAME};
1059: $result .= "<li>for section <b>$section</b></li>";
1060: $level -= 3;
1061: $result .= "<input type='hidden' name='csec' value='" .
1062: HTML::Entities::encode($section) . "' />\n";
1063: } else {
1064: # FIXME: This is probably wasteful!
1065: my $classlist = Apache::loncoursedata::get_classlist();
1066: my $name = $classlist->{$wizvars->{USER_NAME}}->[6];
1067: $result .= "<li>for <b>$name</b></li>";
1068: $level -= 6;
1069: my ($uname, $udom) = split /:/, $wizvars->{USER_NAME};
1070: $result .= "<input type='hidden' name='uname' value='".
1071: HTML::Entities::encode($uname) . "' />\n";
1072: $result .= "<input type='hidden' name='udom' value='".
1073: HTML::Entities::encode($udom) . "' />\n";
1074: }
1075:
1076: # Print value
1077: $result .= "<li>to <b>" . ctime($wizvars->{PARM_DATE}) . "</b> (" .
1078: Apache::lonnavmaps::timeToHumanString($wizvars->{PARM_DATE})
1079: . ")</li>\n";
1080:
1081: # print pres_marker
1082: $result .= "\n<input type='hidden' name='pres_marker'" .
1083: " value='$affectedResourceId&$parm_name&$level' />\n";
1084:
1085: $result .= "<br /><br /><center><input type='submit' value='Finish Wizard' /></center></form>\n";
1086:
1087: return $result;
1088: }
1089:
1090: sub overrideForm {
1.1 bowersj2 1091: return 1;
1092: }
1093:
1.3 bowersj2 1094: 1;
1095:
1096: package Apache::lonwizard::resource_choice;
1097:
1098: =pod
1099:
1100: =head2 Class: resource_choice
1101:
1102: folder_choice gives the user an opportunity to select one resource from the current course, and will stick the ID of that choice (#.#) into the desired variable.
1103:
1104: Note this state will not automatically advance if there is only one choice, because it might confuse the user in this case.
1105:
1106: =over 4
1107:
1.4 bowersj2 1108: =item overriddent method B<new>(parentLonWizReference, stateName, stateTitle, messageBefore, messageAfter, nextState, varName, filterFunction, choiceFunction, multichoice): messageBefore and messageAfter appear before and after the state choice, respectively. nextState is the state to proceed to after the choice. varName is the wizard variable to store the choice in.
1.3 bowersj2 1109:
1110: filterFunction is a function reference that receives the current resource as an argument, and returns 1 if it should be displayed, and 0 if it should not be displayed. By default, the class will use sub {return 1;}, which will show all resources. choiceFunction is a reference to a function that receives the resource object as a parameter and returns 1 if it should be a *selectable choice*, and 0 if not. By default, this is the same as the filterFunction, which means all displayed choices will be choosable. See parm wizard for an example of this in the resource selection routines.
1111:
1.4 bowersj2 1112: multichoice specifies whether the state should provide radio buttons, allowing the user one choice, or checkboxes, allowing the user multiple choices, and automatically including some convenience buttons the user can choose (like "Check All" and "Uncheck All"), implemented with Javascript. Defaults to false, allow just one choice.
1113:
1.3 bowersj2 1114: =back
1115:
1116: =cut
1.1 bowersj2 1117:
1118: no strict;
1119: @ISA = ("Apache::lonwizard::state");
1120: use strict;
1.3 bowersj2 1121:
1122: sub new {
1123: my $proto = shift;
1124: my $class = ref($proto) || $proto;
1125: my $self = bless $proto->SUPER::new(shift, shift, shift);
1126:
1127: $self->{MESSAGE_BEFORE} = shift;
1128: $self->{MESSAGE_AFTER} = shift;
1129: $self->{NEXT_STATE} = shift;
1130: $self->{VAR_NAME} = shift;
1131: $self->{FILTER_FUNC} = shift;
1132: if (!defined($self->{FILTER_FUNC})) {
1133: $self->{FILTER_FUNC} = sub {return 1;};
1134: }
1135: $self->{CHOICE_FUNC} = shift;
1136: if (!defined($self->{CHOICE_FUNC})) {
1137: $self->{CHOICE_FUNC} = $self->{FILTER_FUNC};
1138: }
1.4 bowersj2 1139: $self->{MULTICHOICE} = shift;
1140: if (!defined($self->{MULTICHOICE})) {
1141: $self->{MULTICHOICE} = 0;
1142: }
1.3 bowersj2 1143: }
1144:
1145: sub postprocess {
1146: my $self = shift;
1147: my $wizard = $self->{WIZARD};
1.4 bowersj2 1148:
1149: # If we were just manipulating a folder, do not proceed to the
1150: # next state
1151: if ($ENV{'form.folderManip'}) {
1152: return;
1153: }
1154:
1.3 bowersj2 1155: my $chosenValue = $ENV{"form." . $self->{VAR_NAME} . ".forminput"};
1156: $wizard->setVar($self->{VAR_NAME}, $chosenValue)
1157: if (defined($self->{VAR_NAME}));
1158:
1159: $wizard->changeState($self->{NEXT_STATE});
1160: }
1161:
1162: sub render {
1163: my $self = shift;
1.4 bowersj2 1164: my $wizard = $self->{WIZARD};
1.3 bowersj2 1165: my $result = "";
1166: my $var = $self->{VAR_NAME};
1167: my $curVal = $self->{WIZARD}->{VARS}->{$var};
1.4 bowersj2 1168: my $vals = {};
1169: if ($curVal =~ /,/) { # multiple choices
1170: foreach (split /,/, $curVal) {
1171: $vals->{$_} = 1;
1172: }
1173: } else {
1174: $vals->{$curVal} = 1;
1175: }
1.3 bowersj2 1176:
1177: $result .= $self->{MESSAGE_BEFORE} if (defined $self->{MESSAGE_BEFORE});
1178:
1179: # Get the course nav map
1180: my $navmap = Apache::lonnavmaps::navmap->new(
1181: $ENV{"request.course.fn"}.".db",
1182: $ENV{"request.course.fn"}."_parms.db", 0, 0);
1183:
1184: if (!defined($navmap)) {
1185: return "<font color='red' size='+1'>Something has gone wrong with the map selection feature. Please contact your administrator.</font>";
1186: }
1187:
1.4 bowersj2 1188: my $iterator = $navmap->getIterator(undef, undef, undef, 0, 0);
1.3 bowersj2 1189: my $filterFunc = $self->{FILTER_FUNC};
1190: my $choiceFunc = $self->{CHOICE_FUNC};
1191:
1.4 bowersj2 1192: # Create the composite function that renders the column on the nav map
1193: my $renderColFunc = sub {
1194: my ($resource, $part, $params) = @_;
1195:
1196: if (!&$choiceFunc($resource)) {
1197: return '<td> </td>';
1198: } else {
1199: my $col = "<td><input type='radio' name='${var}.forminput' ";
1200: if ($vals->{$resource->{ID}}) {
1201: $col .= "checked ";
1.3 bowersj2 1202: }
1.4 bowersj2 1203: $col .= "value='" . $resource->{ID} . "' /></td>";
1204: return $col;
1.3 bowersj2 1205: }
1.4 bowersj2 1206: };
1.3 bowersj2 1207:
1.4 bowersj2 1208: $result .=
1209: &Apache::lonnavmaps::render( { "iterator" => $iterator,
1210: 'cols' => [$renderColFunc,
1211: Apache::lonnavmaps::resource()],
1212: 'showParts' => 0,
1213: 'queryString' => $wizard->queryStringVars() . '&folderManip=1',
1214: 'url' => '/adm/wizard'} );
1215:
1.3 bowersj2 1216: $navmap->untieHashes();
1217:
1218: $result .= $self->{MESSAGE_AFTER} if (defined $self->{MESSAGE_AFTER});
1219:
1220: return $result;
1221: }
1222:
1223: 1;
1224:
1225: package Apache::lonwizard::choose_student;
1226:
1227: no strict;
1228: @ISA = ("Apache::lonwizard::choice_state");
1229: use strict;
1230:
1231: sub new {
1232: my $proto = shift;
1233: my $class = ref($proto) || $proto;
1234: my $self = bless $proto->SUPER::new(shift, shift, shift, shift,
1235: shift, shift, shift);
1236: return $self;
1237: }
1238:
1239: sub determineChoices {
1240: my %choices;
1241:
1242: my $classlist = Apache::loncoursedata::get_classlist();
1243: foreach (keys %$classlist) {
1244: $choices{$classlist->{$_}->[6]} = $_;
1245: }
1246:
1247: return \%choices;
1248: }
1249:
1250: 1;
1251:
1252: package Apache::lonwizard::choose_section;
1253:
1254: no strict;
1255: @ISA = ("Apache::lonwizard::choice_state");
1256: use strict;
1257:
1258: sub new {
1259: my $proto = shift;
1260: my $class = ref($proto) || $proto;
1261: my $self = bless $proto->SUPER::new(shift, shift, shift, shift,
1262: shift, shift, shift);
1263: return $self;
1264: }
1265:
1266: sub determineChoices {
1267: my %choices;
1268:
1269: my $classlist = Apache::loncoursedata::get_classlist();
1270: foreach (keys %$classlist) {
1271: my $sectionName = $classlist->{$_}->[5];
1272: if (!$sectionName) {
1273: $choices{"No section assigned"} = "";
1274: } else {
1275: $choices{$sectionName} = $sectionName;
1276: }
1277: }
1278:
1279: return \%choices;
1280: }
1281:
1282: 1;
1.1 bowersj2 1283:
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