reset part-1

common/lib/xmodule/xmodule/js/src/poll/poll_main.js

@@ -50,7 +50,32 @@ PollMain.prototype = {
         _this.ajax_url + '/' + answer,  {},
         function (response) {
             _this.showAnswerGraph(response.poll_answers, response.total);
+            _this.resetButton.show();
+            if (_this.wrapperSectionEl !== null) {
+                $(_this.wrapperSectionEl).find('.xmodule_ConditionalModule').each(function (index, value) {
+                    new window.Conditional(value, _this.id.replace(/^poll_/, ''));
+                });
+            }
+        }
+    );
+
+
+}, // End-of: 'submitAnswer': function (answer, answerEl) {
 
+
+'submitReset': function () {
+    var _this;
+    _this = this;
+    // Send the data to the server as an AJAX request. Attach a callback that will
+    // be fired on server's response.
+    $.postWithPrefix(
+        _this.ajax_url + '/' + 'reset',  {},
+        function (response) {
+            _this.questionAnswered = false;
+            $(_this.questionEl).find('.button').removeClass('answered');
+            _this.graphAnswerEl.hide();
+            $(_this.questionEl).find('.stats').hide();
+            _this.resetButton.hide();
             if (_this.wrapperSectionEl !== null) {
                 $(_this.wrapperSectionEl).find('.xmodule_ConditionalModule').each(function (index, value) {
                     new window.Conditional(value, _this.id.replace(/^poll_/, ''));
@@ -158,6 +183,15 @@ PollMain.prototype = {
     this.graphAnswerEl.hide();
     this.graphAnswerEl.appendTo(this.questionEl);
 
+    if (_this.jsonConfig.reset === "True")
+        {
+            _this.resetButton = $('<div class="button reset-button">Reset</div>');
+            _this.resetButton.appendTo(_this.questionEl);
+            _this.resetButton.hide();
+            _this.resetButton.on('click', function () {
+                _this.submitReset();
+            });
+        }
     // If it turns out that the user already answered the question, show the answers graph.
     if (this.questionAnswered === true) {
         this.showAnswerGraph(this.jsonConfig.poll_answers, this.jsonConfig.total);
@@ -234,6 +268,7 @@ function PollMain(el) {
                 });
 
                 _this.questionEl.children('.poll_question_div').html(JSON.stringify(_this.jsonConfig));
+
                 _this.postInit();
             }
         );

common/lib/xmodule/xmodule/poll_module.py

@@ -75,6 +75,16 @@ class PollModule(XModule):
                                'poll_answers': self.poll_answers,
                                'total': sum(self.poll_answers.values())
                                })
+        elif dispatch == 'reset_poll' and self.voted:
+            self.voted = False
+
+            # FIXME: fix this, when xblock will support mutable types.
+            # Now we use this hack.
+            temp_poll_answers = self.poll_answers
+            temp_poll_answers[self.poll_answer] -= 1
+            self.poll_answers = temp_poll_answers
+
+            self.poll_answer = ''
         else:  # return error message
             return json.dumps({'error': 'Unknown Command!'})
 
@@ -119,7 +129,8 @@ class PollModule(XModule):
             # to show answered poll after reload:
             'poll_answer': self.poll_answer,
             'poll_answers': self.poll_answers if self.voted else {},
-            'total': sum(self.poll_answers.values()) if self.voted else 0})
+            'total': sum(self.poll_answers.values()) if self.voted else 0,
+            'reset': self.descriptor.xml_attributes.get('reset', True)})
 
 
 class PollDescriptor(MakoModuleDescriptor, XmlDescriptor):