1: # The LearningOnline Network with CAPA
2: # chemical equation style response
3: #
4: # $Id: chemresponse.pm,v 1.5 2003/05/05 21:14:10 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: package Apache::chemresponse;
30: use strict;
31: use Apache::lonxml;
32: use Apache::lonnet;
33:
34: BEGIN {
35: &Apache::lonxml::register('Apache::chemresponse',('chemresponse','chemstructure','reactionresponse'));
36: }
37:
38: sub seperate_jme_window {
39: my ($smile_input,$jme_input,$molecule)=@_;
40: my $smilesection;
41: if (defined($smile_input)) {
42: $smilesection=<<SMILESECTION;
43: opener.document.lonhomework.$smile_input.value = smiles;
44: SMILESECTION
45: }
46: my $jmesection;
47: if (defined($jme_input)) {
48: $jmesection=<<JMESECTION;
49: jmeFile = document.applets.JME.jmeFile();
50: opener.document.lonhomework.$jme_input.value = jmeFile;
51: JMESECTION
52: }
53:
54: my $body=<<CHEMPAGE;
55: <html>
56: <head>
57: <title>Molecule Editor</title>
58: <script language="JavaScript">
59: function submitSmiles() {
60: smiles = document.applets.JME.smiles();
61: if (smiles == "") {
62: alert("Nothing to submit");
63: } else {
64: $smilesection
65: $jmesection
66: window.close();
67: }
68: }
69: function openHelpWindow() {
70: window.open("/adm/jme/jme_help.html","","scrollbars=yes,resizable=yes,width=500,height=600");
71: }
72: </script>
73: </head>
74: <body bgcolor="#ffffff">
75: <center>
76: <applet code="JME.class" name="JME" archive="/adm/jme/JME.jar" width="97%" height="78%">
77: You have to enable Java and JavaScript on your machine.
78: <param name="jme" value="$molecule" />
79: </applet><br />
80: <font face="arial,helvetica,sans-serif" size=-1><a href="http://www.molinspiration.com/jme/index.html">JME Editor</a> courtesy of Peter Ertl, Novartis</font>
81: <form>
82: <input type="button" name="submit" value="Insert Answer" onClick = "submitSmiles();" />
83: <br />
84: <input type="button" value=" Close " onClick = "window.close()" />
85:
86: <input type="button" value=" Help " onClick = "openHelpWindow()" />
87: </form>
88: </center>
89: </body>
90: </html>
91: CHEMPAGE
92: $body=&HTML::Entities::encode($body);
93: $body=~s/\n/ /g;
94: my $result=<<CHEMINPUT;
95: <input type="button" value="Draw Molecule" onClick="javascript:editor=window.open('','','width=500,height=500,scrollbars=no,resizable=yes');editor.document.open('text/html','replace');editor.document.writeln('$body')" />
96: CHEMINPUT
97: return $result;
98: }
99:
100: sub start_chemresponse {
101: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
102: my $result;
103: my $partid = $Apache::inputtags::part;
104: my $id = &Apache::response::start_response($parstack,$safeeval);
105: if ($target eq 'meta') {
106: } elsif ($target eq 'web') {
107: my $molecule;
108: if (defined($Apache::lonhomework::history{"resource.$partid.$id.molecule"})) {
109: $molecule=$Apache::lonhomework::history{"resource.$partid.$id.molecule"};
110: } else {
111: $molecule=&Apache::lonxml::get_param('molecule',$parstack,
112: $safeeval);
113: }
114: $result=&seperate_jme_window("HWVAL_$id","MOLECULE_$id",$molecule);
115: $result.= '<input type="hidden" name="MOLECULE_'.$id.'" value="" />';
116: } elsif ($target eq 'edit') {
117: $result .=&Apache::edit::tag_start($target,$token);
118: $result .=&Apache::edit::text_arg('Starting Molecule:','molecule',
119: $token,40);
120: my $molecule=&Apache::lonxml::get_param('molecule',$parstack,
121: $safeeval);
122: $result .=&seperate_jme_window(undef,
123: &Apache::edit::html_element_name('molecule'),
124: $molecule);
125: $result .='<br />';
126: $result .=&Apache::edit::text_arg('Correct Answer:','answer',
127: $token,40);
128: $result .=&Apache::edit::hidden_arg('jmeanswer',$token);
129: my $jmeanswer=&Apache::lonxml::get_param('jmeanswer',$parstack,
130: $safeeval);
131: $result .=&seperate_jme_window(
132: &Apache::edit::html_element_name('answer'),
133: &Apache::edit::html_element_name('jmeanswer'),
134: $jmeanswer);
135: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
136: } elsif ($target eq 'modified') {
137: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
138: $safeeval,'molecule',
139: 'answer','jmeanswer');
140: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
141: }
142: return $result;
143: }
144:
145: sub end_chemresponse {
146: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
147: my $result;
148: if ($target eq 'grade' && defined($ENV{'form.submitted'})) {
149: &Apache::response::setup_params($$tagstack[-1]);
150: my $response = &Apache::response::getresponse();
151: if ( $response =~ /[^\s]/) {
152: my $partid = $Apache::inputtags::part;
153: my $id = $Apache::inputtags::response['-1'];
154: my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
155: my %previous = &Apache::response::check_for_previous($response,$partid,$id);
156: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
157: &Apache::lonxml::debug("submitted a $response for $answer<br \>\n");
158: my $ad;
159: if ($response eq $answer) {
160: $ad='EXACT_ANS';
161: } else {
162: $ad='INCORRECT';
163: }
164: &Apache::response::handle_previous(\%previous,$ad);
165: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
166: $Apache::lonhomework::results{"resource.$partid.$id.molecule"}=$ENV{"form.MOLECULE_$id"};
167: }
168: } elsif ($target eq "edit") {
169: $result.= &Apache::edit::tag_end($target,$token,'');
170: }
171: &Apache::response::end_response;
172: return $result;
173: }
174:
175: sub start_chemstructure {
176: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
177: my $result;
178: if ($target eq 'web') {
179: my $width=&Apache::lonxml::get_param('width',$parstack,$safeeval);
180: my $height=&Apache::lonxml::get_param('height',$parstack,$safeeval);
181: my $molecule=&Apache::lonxml::get_param('molecule',$parstack,$safeeval);
182: $result=<<CHEMOUTPUT;
183: <applet code="JME.class" archive="/adm/jme/JME.jar" width="$width" height="$height">
184: <param name="options" value="depict border" />
185: <param name="jme" value="$molecule" />
186: </applet>
187: CHEMOUTPUT
188: } elsif ($target eq 'edit') {
189: $result .=&Apache::edit::tag_start($target,$token);
190: $result .=&Apache::edit::text_arg('Width:','width',$token,5);
191: $result .=&Apache::edit::text_arg('Height:','height',$token,5);
192: $result .=&Apache::edit::text_arg('Molecule:','molecule',$token,40);
193: my $molecule=&Apache::lonxml::get_param('molecule',$parstack,
194: $safeeval);
195: $result .=&seperate_jme_window(undef,
196: &Apache::edit::html_element_name('molecule'),
197: $molecule);
198: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
199: } elsif ($target eq 'modified') {
200: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
201: $safeeval,'molecule',
202: 'width','height');
203: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
204: }
205: return $result;
206: }
207:
208: sub end_chemstructure {
209: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
210: my $result;
211: if ($target eq "edit") {
212: $result.= &Apache::edit::tag_end($target,$token,'');
213: }
214: return $result;
215: }
216:
217: sub reaction_javascript {
218: my $rightarrow;
219: if ($ENV{'browser.unicode'}) {
220: $rightarrow=" → "
221: } else {
222: $rightarrow=" <font face=symbol>®</font> ";
223: }
224: my $result=<<REACTIONJAVASCRIPT;
225: <script language="JavaScript">
226:
227: var level;
228: var reactants;
229: var products;
230:
231:
232: function parse_reaction(string) {
233: var reaction_array = string.split('->');
234: var i;
235: reactants = new Array(0);
236: products = new Array(0);
237:
238: if (reaction_array.length > 0)
239: reactants = reaction_array[0].split(' +');
240: if (reaction_array.length > 1)
241: products = reaction_array[1].split(' +');
242: }
243:
244: function to_capa(string) {
245: var reaction = "";
246: var i;
247:
248: parse_reaction(string);
249:
250: for (i = 0; i < reactants.length; i++)
251: reactants[i] = capa_component(reactants[i]);
252: for (i = 0; i < products.length; i++)
253: products[i] = capa_component(products[i]);
254:
255: reactants.sort();
256: products.sort();
257:
258: for (i = 0; i < reactants.length-1; i++) {
259: reaction += reactants[i];
260: reaction += " + ";
261: }
262: if (i < reactants.length)
263: reaction += reactants[i];
264: if (products.length > 0) {
265: reaction += " -> ";
266: for (i = 0; i < products.length-1; i++) {
267: reaction += products[i];
268: reaction += " + ";
269: }
270: if (i < products.length)
271: reaction += products[i];
272: }
273:
274: return reaction;
275: }
276:
277: function capa_component(string) {
278: var reactant = "";
279: var i = 0;
280: level = 0;
281:
282: for (;string.substring(i,i+1) == ' ';i++)
283: ;
284: for (;isDigit(string.substring(i,i+1));i++)
285: reactant += string.substring(i,i+1);
286: for (;i < string.length;i++)
287: reactant += capa_char(string.substring(i,i+1));
288:
289: return reactant;
290: }
291:
292: function capa_char(chr) {
293: if (level == 0) { // baseline
294: if (chr == '^')
295: level = 1;
296: if (chr == ' ')
297: return "";
298: return chr;
299: }
300: if (level == 1) { // superscript
301: if (isDigit(chr))
302: return chr;
303: level = 0;
304: return chr;
305: }
306: }
307:
308: function to_html(string) {
309: var reaction = "";
310: var i;
311:
312: parse_reaction(string);
313: for (i = 0; i < reactants.length-1; i++) {
314: reaction += html_component(reactants[i]);
315: reaction += " + ";
316: }
317: if (i < reactants.length)
318: reaction += html_component(reactants[i]);
319:
320: if (products.length > 0) {
321: reaction += " $rightarrow ";
322: for (i = 0; i < products.length-1; i++) {
323: reaction += html_component(products[i]);
324: reaction += " + ";
325: }
326: if (i < products.length)
327: reaction += html_component(products[i]);
328: }
329:
330: return reaction;
331: }
332:
333: function html_component(string) {
334: var reactant = "";
335: var i = 0;
336: level = 0;
337:
338: for (;string.substring(i,i+1) == ' ';i++)
339: ;
340: for (;isDigit(string.substring(i,i+1));i++)
341: reactant += string.substring(i,i+1);
342: for (;i < string.length;i++)
343: reactant += html_char(string.substring(i,i+1));
344:
345: return reactant;
346: }
347:
348: function html_char(chr) {
349: if (level == 0) { // baseline
350: if (isDigit(chr))
351: return chr.sub();
352: if (chr == '^') {
353: level = 1;
354: return "";
355: }
356: if (chr == '+') // baseline or superscript
357: return "?";
358: if (chr == ' ')
359: return "";
360: return chr;
361: }
362: if (level == 1) { // superscript
363: if (isDigit(chr))
364: return chr.sup();
365: if (chr == '+' || chr == '-') {
366: level = 0;
367: return chr.sup();
368: }
369: if (chr == ' ') {
370: level = 0;
371: return "";
372: }
373: level = 0;
374: return chr;
375: }
376: }
377:
378: function isDigit(string) {
379: if (string >= '0' && string <='9')
380: return 1;
381: else
382: return 0;
383: }
384:
385: function openHelpWindow() {
386: window.open("reaction_help.html","","scrollbars=yes,resizable=yes,width=550,height=600")
387: }
388:
389: function submitReaction() {
390: reaction = to_capa(document.form.text.value);
391: if (reaction == "") {
392: alert("Nothing to submit");
393: }
394: else {
395: name = "INPUT" + ((problem < 10) ? "0" : "") + problem;
396: i = 0;
397: while (parent.opener.document.CAPA.elements[i].name != name)
398: i++;
399: parent.opener.document.CAPA.elements[i].value = reaction;
400: parent.opener.document.CAPA.submit();
401: }
402: }
403: </script>
404: REACTIONJAVASCRIPT
405: return $result;
406: }
407:
408: sub start_reactionresponse {
409: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
410: my $result;
411: my $id = &Apache::response::start_response($parstack,$safeeval);
412: if ($target eq 'web') {
413: $result.=&reaction_javascript();
414: # $result.='<iframe name="REACTION_'.$id.'" width="200" height="100" src="/adm/jme/reaction_viewer.html"></iframe>';
415: $result.='<input type="button" value="Check" onClick = "javascript:newWindow=open(\'\',\'new_W\',\'width=500,height=200,scrollbars=1\');newWindow.document.open(\'text/html\',\'replace\');newWindow.document.writeln(\'<center><br />\'+to_html(document.lonhomework.HWVAL_'.$id.'.value)+\'</center><input type="button" value=" Close " onClick = "parent.window.close()" />\');newWindow.document.close()" />'
416: } elsif ($target eq "edit") {
417: }
418: return $result;
419: }
420:
421: sub end_reactionresponse {
422: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
423: my $result;
424: if ($target eq "edit") {
425: $result.= &Apache::edit::tag_end($target,$token,'');
426: }
427: &Apache::response::end_response;
428: return $result;
429: }
430:
431: 1;
432: __END__
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