1: # The LearningOnline Network with CAPA
2: # edit mode helpers
3: # 3/20 Guy
4: package Apache::edit;
5:
6: use strict;
7: use Apache::lonnet;
8:
9: # Global Vars
10: # default list of colors to use in editing
11: @Apache::edit::colorlist=('#ffffff','#ff0000','#00ff00','#0000ff','#0ff000','#000ff0','#f0000f');
12: # depth of nesting of edit
13: $Apache::edit::colordepth=0;
14:
15: sub initialize_edit {
16: $Apache::edit::colordepth=0;
17: }
18:
19: sub tag_start {
20: my ($target,$token,$description) = @_;
21: my $result='';
22: if ($target eq "edit") {
23: my $tag=$token->[1];
24: if (!$description) { $description="<$tag>"; }
25: $result.= &start_table($token)."<tr><td>$description</td>
26: <td>Delete".
27: &deletelist($target,$token)
28: ."</td>
29: <td>".
30: &insertlist($target,$token).
31: "</td>
32: </tr><tr><td colspan=\"3\">\n";
33: }
34: return $result;
35: }
36:
37: sub tag_end {
38: my ($target,$token,$description) = @_;
39: my $result='';
40: if ($target eq 'edit') {
41: my $tag=$token->[1];
42: if (!defined($description)) {
43: $result.="</td></tr><tr><td></$tag></td><td colspan=\"2\"> </td>";
44: } else {
45: if ($description ne '') { $result.="</td></tr><tr><td>$description</td><td colspan=\"2\"> </td>"; }
46: }
47: $result.="</tr>".&end_table()."\n";
48: }
49: return $result;
50: }
51:
52: sub start_table {
53: my ($token)=@_;
54: my $tag = $token->[1];
55: my $tagnum;
56: foreach my $namespace (reverse @Apache::lonxml::namespace) {
57: my $testtag=$Apache::lonxml::namespace['-1'].'::'.$tag;
58: $tagnum=$Apache::lonxml::insertlist{"$testtag.num"};
59: if (defined($tagnum)) { last; }
60: }
61: if (!defined ($tagnum)) { $tagnum=$Apache::lonxml::insertlist{"$tag.num"}; }
62: my $color = $Apache::lonxml::insertlist{"$tagnum.color"};
63: if (!defined($color)) {
64: $color = $Apache::edit::colorlist[$Apache::edit::colordepth];
65: }
66: $Apache::edit::colordepth++;
67: my $result="<table bgcolor=\"$color\" width=\"100%\" border=\"5\">";
68: return $result;
69: }
70:
71: sub end_table {
72: $Apache::edit::colordepth--;
73: my $result="</table>";
74: return $result;
75: }
76:
77: sub deletelist {
78: my ($target,$token) = @_;
79: my $result = "<select name=\"delete_$Apache::lonxml::curdepth\">
80: <option></option>
81: <option>Yes</option>
82: </select>";
83: return $result;
84: }
85:
86: sub handle_delete {
87: if (!$ENV{"form.delete_$Apache::lonxml::curdepth"}) { return ''; }
88: my ($space,$target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
89: my $result=0;
90: if ($space) {
91: my $sub1="$space\:\:delete_$token->[1]";
92: {
93: no strict 'refs';
94: if (defined &$sub1) {
95: $result=&$sub1($target,$token,$tagstack,$parstack,$parser,$safeeval,$style);
96: }
97: }
98: }
99: if (!$result) {
100: my $endtag='/'.$token->[1];
101: my $bodytext=&Apache::lonxml::get_all_text($endtag,$$parser[$#$parser]);
102: $$parser['-1']->get_token();
103: &Apache::lonxml::debug("Deleting :$bodytext: for $token->[1]");
104: &Apache::lonxml::end_tag($tagstack,$parstack,$token);
105: }
106: return 1;
107: }
108:
109: sub get_insert_list {
110: my ($token) = @_;
111: my $result='';
112: my @tagnums= ();
113: #&Apache::lonxml::debug("keys ".join("\n",sort(keys(%Apache::lonxml::insertlist))));
114: if ($Apache::lonxml::insertlist{"$token->[1].which"}) {
115: push (@tagnums, @{ $Apache::lonxml::insertlist{"$token->[1].which"} });
116: }
117: foreach my $namespace (@Apache::lonxml::namespace) {
118: if ($Apache::lonxml::insertlist{"$namespace".'::'."$token->[1].which"}) {
119: push (@tagnums, @{ $Apache::lonxml::insertlist{"$namespace".'::'."$token->[1].which"} });
120: }
121: }
122: if (@tagnums) {
123: foreach my $tagnum (@tagnums) {
124: $result.='<option value="'.$tagnum.'">'.$Apache::lonxml::insertlist{"$tagnum.description"}."</option>\n";
125: }
126: if ($result) { $result='<option selected="on"></option>'.$result; }
127: }
128: return $result;
129: }
130:
131: sub insertlist {
132: my ($target,$token) = @_;
133: my $result;
134: if ($target eq 'edit') {
135: my $optionlist= &get_insert_list($token);
136: if ($optionlist) {
137: $result = "Insert:
138: <select name=\"insert_$Apache::lonxml::curdepth\">
139: $optionlist
140: </select>"
141: } else {
142: $result=" ";
143: }
144: }
145: return $result;
146: }
147:
148: sub handle_insert {
149: if ($ENV{"form.insert_$Apache::lonxml::curdepth"} eq '') { return ''; }
150: my $result;
151: my $tagnum = $ENV{"form.insert_$Apache::lonxml::curdepth"};
152: my $func=$Apache::lonxml::insertlist{"$tagnum.function"};
153: if ($func eq 'default') {
154: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
155: my $namespace;
156: if ($newtag =~ /::/) { ($namespace,$newtag) = split(/::/,$newtag); }
157: $result.="\n<$newtag>\n</$newtag>";
158: } else {
159: if (defined(&$func)) {
160: {
161: no strict 'refs';
162: $result.=&$func();
163: }
164: } else {
165: my $newtag=$Apache::lonxml::insertlist{"$tagnum.tag"};
166: &Apache::lonxml::error("Unable to insert tag $newtag, $func was not defined.");
167: }
168: }
169: return $result;
170: }
171:
172: sub insert_responseparam {
173: return '
174: <responseparam />';
175: }
176:
177: sub insert_numericalresponse {
178: return '
179: <numericalresponse answer="">
180: <textline />
181: <hintgroup>
182: </hintgroup>
183: </numericalresponse>';
184: }
185:
186: sub insert_stringresponse {
187: return '
188: <stringresponse answer="" type="">
189: <textline />
190: <hintgroup>
191: </hintgroup>
192: </stringresponse>';
193: }
194:
195: sub insert_optionresponse {
196: return '
197: <optionresponse max="10">
198: <foilgroup options="">
199: </foilgroup>
200: <hintgroup>
201: </hintgroup>
202: </optionresponse>';
203: }
204:
205: sub insert_displayduedate { return '<displayduedate />'; }
206: sub insert_displaytitle { return '<displaytitle />'; }
207:
208: sub editfield {
209: my ($tag,$data,$description,$minwidth,$minheight)=@_;
210:
211: my $count=0;
212: my $maxlength=-1;
213: map { $count++;
214: if (length($_) > $maxlength) { $maxlength = length ($_); }
215: } split ("\n", $data);
216: if ($maxlength > 80) { $maxlength = 80; }
217: if ($maxlength < $minwidth) { $maxlength = $minwidth; }
218: if ( $count < $minheight) { $count = $minheight; }
219: if ($description) {
220: $description="<br />".$description."<br />";
221: }
222: return "$description\n <textarea rows=\"$count\" cols=\"$maxlength\" name=homework_edit_".$Apache::lonxml::curdepth.">$data</textarea>\n";
223: # return "<br />\n<$tag><br />\n <textarea rows=\"$count\" cols=\"$maxlength\" name=homework_edit_".$Apache::lonxml::curdepth.">$data</textarea><br />\n</$tag><br />\n";
224: }
225:
226: sub modifiedfield {
227: my ($token) = @_;
228: my $result;
229: # foreach my $envkey (sort keys %ENV) {
230: # &Apache::lonxml::debug("$envkey ---- $ENV{$envkey}");
231: # }
232: # &Apache::lonxml::debug("I want homework_edit_$Apache::lonxml::curdepth");
233: # &Apache::lonxml::debug($ENV{"form.homework_edit_$Apache::lonxml::curdepth"});
234: $result=$ENV{"form.homework_edit_$Apache::lonxml::curdepth"};
235: if (defined $token) {
236: if (defined $token->[4]) {
237: $result=$token->[4].$result;
238: } else {
239: $result=$result.$token->[2];
240: }
241: }
242: return $result;
243: }
244:
245: sub insert_startouttext {
246: return "<startouttext />\n<endouttext />";
247: }
248:
249: sub insert_script {
250: return "\n<script type=\"loncapa/perl\">\n</script>";
251: }
252:
253: # Returns a 1 if the token has been modified and you should rebuild the tag
254: # side-effects, will modify the $token if new values are found
255: sub get_new_args {
256: my ($token,$parstack,$safeeval,@args)=@_;
257: my $rebuild=0;
258: foreach my $arg (@args) {
259: #just want the string that it was set to
260: my $value=$token->[2]->{$arg};
261: my $newvalue=$ENV{"form.$Apache::lonxml::curdepth.$arg"};
262: &Apache::lonxml::debug(" for:$arg: cur is :$value: new is :$newvalue:");
263: if ($value ne $newvalue) {
264: $token->[2]->{$arg}=$newvalue;
265: $rebuild=1;
266: }
267: }
268: return $rebuild;
269: }
270:
271: # looks for /> on start tags
272: sub rebuild_tag {
273: my ($token) = @_;
274: my $result;
275: if ($token->[0] eq 'S') {
276: $result = '<'.$token->[1];
277: while (my ($key,$val)= each(%{$token->[2]})) {
278: $val=~s:^\s+|\s+$::g;
279: $val=~s:"::g; #"
280: &Apache::lonxml::debug("setting :$key: to :$val:");
281: $result.=' '.$key.'="'.$val.'"';
282: }
283: if ($token->[4] =~ m:/>$:) {
284: $result.=' />';
285: } else {
286: $result.='>';
287: }
288: } elsif ( $token->[0] eq 'E' ) {
289: $result = '</'.$token->[1].'>';
290: }
291: return $result;
292: }
293:
294: sub text_arg {
295: my ($description,$name,$token,$size) = @_;
296: my $result;
297: if (!defined $size) { $size=20; }
298: my $arg=$token->[2]{$name};
299: $result=$description.'<input name="'."$Apache::lonxml::curdepth.$name".
300: '" type="text" value="'.$arg.'" size="'.$size.'" />';
301: return $result;
302: }
303:
304: sub select_arg {
305: my ($description,$name,$list,$token) = @_;
306: my $result;
307: my $optionlist="";
308: my $selected=$token->[2]{$name};
309: foreach my $option (@$list) {
310: if ( $selected eq $option ) {
311: $optionlist.="<option selected=\"on\">$option</option>\n";
312: } else {
313: $optionlist.="<option>$option</option>\n";
314: }
315: }
316: $result.=$description.'<select name="'."$Apache::lonxml::curdepth.$name".'">
317: '.$optionlist.'
318: </select></td></tr><tr><td colspan="3">';
319: return $result;
320: }
321:
322: sub select_or_text_arg {
323: my ($description,$name,$list,$token,$size) = @_;
324: my $result;
325: my $optionlist="";
326: my $found=0;
327: my $selected=$token->[2]{$name};
328: foreach my $option (@$list) {
329: if ( $selected eq $option ) {
330: $optionlist.="<option selected=\"on\">$option</option>\n";
331: $found=1;
332: } else {
333: $optionlist.="<option>$option</option>\n";
334: }
335: }
336: $optionlist.="<option value=\"TYPEDINVALUE\">Type in value</option>\n";
337: if ($found) {
338: $result.=$description.'<select name="'."$Apache::lonxml::curdepth.$name".'">
339: '.$optionlist.'
340: </select></td></tr><tr><td colspan="3">';
341: } else {
342: $result.=&text_arg($description,$name,$token,$size);
343: }
344: return $result;
345: }
346: 1;
347: __END__
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