1 files changed, 44 insertions, 0 deletions
diff --git a/gui/model/form.py b/gui/model/form.py
new file mode 100644
index 0000000..3f045ce
--- /dev/null
+++ b/gui/model/form.py
@@ -0,0 +1,44 @@
+from json import dumps
+
+
+class FormModel:
+    def __init__(self, identifier):
+        self.__identifier = identifier
+        self.__block = []
+
+    @property
+    def identifier(self):
+        return self.__identifier
+
+    @property
+    def block(self):
+        return self.__block
+
+    def to_json(self):
+        return dumps({question.identifier: question.answer.value.get_json_value() for question in self.block})
+
+    def find_question_of_widget(self, widget):
+        for question in self.block:
+            if question.widget == widget:
+                return question
+
+    def update_questions_on_change(self, changed_widget):
+        changed_question = self.find_question_of_widget(changed_widget)
+
+        if changed_question:
+            new_value = changed_question.widget.get_value(changed_question.answer_type)
+            changed_question.answer = changed_question.answer_type.get_literal_node(new_value)
+
+            for question in self.block:
+                result = question.evaluate_visibility_condition(self)
+
+                if result:
+                    question.widget.show()
+                    question.widget_label.show()
+                else:
+                    question.widget.hide()
+                    question.widget_label.hide()
+
+                if question.computed:
+                    answer_result = str(question.evaluate_answer(self))
+                    question.widget.setText(answer_result)