1: # The LearningOnline Network with CAPA
2: # chemical equation style response
3: #
4: # $Id: chemresponse.pm,v 1.4 2003/05/05 20:43:46 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 $result=<<REACTIONJAVASCRIPT;
219: <SCRIPT language="JavaScript">
220:
221: var level;
222: var reactants;
223: var products;
224:
225:
226: function parse_reaction(string) {
227: var reaction_array = string.split('->');
228: var i;
229: reactants = new Array(0);
230: products = new Array(0);
231:
232: if (reaction_array.length > 0)
233: reactants = reaction_array[0].split(' +');
234: if (reaction_array.length > 1)
235: products = reaction_array[1].split(' +');
236: }
237:
238: function to_capa(string) {
239: var reaction = "";
240: var i;
241:
242: parse_reaction(string);
243:
244: for (i = 0; i < reactants.length; i++)
245: reactants[i] = capa_component(reactants[i]);
246: for (i = 0; i < products.length; i++)
247: products[i] = capa_component(products[i]);
248:
249: reactants.sort();
250: products.sort();
251:
252: for (i = 0; i < reactants.length-1; i++) {
253: reaction += reactants[i];
254: reaction += " + ";
255: }
256: if (i < reactants.length)
257: reaction += reactants[i];
258: if (products.length > 0) {
259: reaction += " -> ";
260: for (i = 0; i < products.length-1; i++) {
261: reaction += products[i];
262: reaction += " + ";
263: }
264: if (i < products.length)
265: reaction += products[i];
266: }
267:
268: return reaction;
269: }
270:
271: function capa_component(string) {
272: var reactant = "";
273: var i = 0;
274: level = 0;
275:
276: for (;string.substring(i,i+1) == ' ';i++)
277: ;
278: for (;isDigit(string.substring(i,i+1));i++)
279: reactant += string.substring(i,i+1);
280: for (;i < string.length;i++)
281: reactant += capa_char(string.substring(i,i+1));
282:
283: return reactant;
284: }
285:
286: function capa_char(chr) {
287: if (level == 0) { // baseline
288: if (chr == '^')
289: level = 1;
290: if (chr == ' ')
291: return "";
292: return chr;
293: }
294: if (level == 1) { // superscript
295: if (isDigit(chr))
296: return chr;
297: level = 0;
298: return chr;
299: }
300: }
301:
302: function to_html(string) {
303: var reaction = "";
304: var i;
305:
306: parse_reaction(string);
307: for (i = 0; i < reactants.length-1; i++) {
308: reaction += html_component(reactants[i]);
309: reaction += " + ";
310: }
311: if (i < reactants.length)
312: reaction += html_component(reactants[i]);
313:
314: if (products.length > 0) {
315: reaction += " <font face=symbol>®</font> ";
316: for (i = 0; i < products.length-1; i++) {
317: reaction += html_component(products[i]);
318: reaction += " + ";
319: }
320: if (i < products.length)
321: reaction += html_component(products[i]);
322: }
323:
324: return reaction;
325: }
326:
327: function html_component(string) {
328: var reactant = "";
329: var i = 0;
330: level = 0;
331:
332: for (;string.substring(i,i+1) == ' ';i++)
333: ;
334: for (;isDigit(string.substring(i,i+1));i++)
335: reactant += string.substring(i,i+1);
336: for (;i < string.length;i++)
337: reactant += html_char(string.substring(i,i+1));
338:
339: return reactant;
340: }
341:
342: function html_char(chr) {
343: if (level == 0) { // baseline
344: if (isDigit(chr))
345: return chr.sub();
346: if (chr == '^') {
347: level = 1;
348: return "";
349: }
350: if (chr == '+') // baseline or superscript
351: return "?";
352: if (chr == ' ')
353: return "";
354: return chr;
355: }
356: if (level == 1) { // superscript
357: if (isDigit(chr))
358: return chr.sup();
359: if (chr == '+' || chr == '-') {
360: level = 0;
361: return chr.sup();
362: }
363: if (chr == ' ') {
364: level = 0;
365: return "";
366: }
367: level = 0;
368: return chr;
369: }
370: }
371:
372: function isDigit(string) {
373: if (string >= '0' && string <='9')
374: return 1;
375: else
376: return 0;
377: }
378:
379: function openHelpWindow() {
380: window.open("reaction_help.html","","scrollbars=yes,resizable=yes,width=550,height=600")
381: }
382:
383: function submitReaction() {
384: reaction = to_capa(document.form.text.value);
385: if (reaction == "") {
386: alert("Nothing to submit");
387: }
388: else {
389: name = "INPUT" + ((problem < 10) ? "0" : "") + problem;
390: i = 0;
391: while (parent.opener.document.CAPA.elements[i].name != name)
392: i++;
393: parent.opener.document.CAPA.elements[i].value = reaction;
394: parent.opener.document.CAPA.submit();
395: }
396: }
397: </SCRIPT>
398: REACTIONJAVASCRIPT
399: return $result;
400: }
401:
402: sub start_reactionresponse {
403: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
404: my $result;
405: my $id = &Apache::response::start_response($parstack,$safeeval);
406: if ($target eq 'web') {
407: $result.=&reaction_javascript();
408: # $result.='<iframe name="REACTION_'.$id.'" width="200" height="100" src="/adm/jme/reaction_viewer.html"></iframe>';
409: $result.='<input type="button" value="Check" onClick = "javascript:newWindow=open(\'\',\'new_W\',\'width=500,height=200,scrollbars=1\');newWindow.document.open(\'text/html\',\'replace\');newWindow.document.writeln(\'<center><br />\'+to_html(document.lonhomework.HWVAL_'.$id.'.value)+\'</center><input type="button" value=" Close " onClick = "parent.window.close()" />\');newWindow.document.close()" />'
410: } elsif ($target eq "edit") {
411: }
412: return $result;
413: }
414:
415: sub end_reactionresponse {
416: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
417: my $result;
418: if ($target eq "edit") {
419: $result.= &Apache::edit::tag_end($target,$token,'');
420: }
421: &Apache::response::end_response;
422: return $result;
423: }
424:
425: 1;
426: __END__
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