4 files changed, 127 insertions, 0 deletions
diff --git a/gui/model/__pycache__/form.cpython-35.pyc b/gui/model/__pycache__/form.cpython-35.pyc
new file mode 100644
index 0000000..cd48947
--- /dev/null
+++ b/gui/model/__pycache__/form.cpython-35.pyc
diff --git a/gui/model/__pycache__/question.cpython-35.pyc b/gui/model/__pycache__/question.cpython-35.pyc
new file mode 100644
index 0000000..64bb4cf
--- /dev/null
+++ b/gui/model/__pycache__/question.cpython-35.pyc
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)
diff --git a/gui/model/question.py b/gui/model/question.py
new file mode 100644
index 0000000..a45d6e2
--- /dev/null
+++ b/gui/model/question.py
@@ -0,0 +1,83 @@
+from gui.widgets.label import Label
+from ql.ast.visitors.expression_evaluator import ExpressionEvaluator
+
+
+class QuestionModel:
+    def __init__(self, label, identifier, answer_type, answer, computed, visibility_condition):
+        self.__label = label
+        self.__identifier = identifier
+        self.__answer_type = answer_type
+        self.__answer = answer
+        self.__computed = computed
+        self.__visibility_condition = visibility_condition
+        self.__widget = None
+        self.__widget_label = None
+
+    @property
+    def label(self):
+        return self.__label
+
+    @property
+    def identifier(self):
+        return self.__identifier
+
+    @property
+    def answer_type(self):
+        return self.__answer_type
+
+    @property
+    def answer(self):
+        return self.__answer
+
+    @answer.setter
+    def answer(self, value):
+        self.__answer = value
+
+    @property
+    def computed(self):
+        return self.__computed
+
+    @property
+    def visibility_condition(self):
+        return self.__visibility_condition
+
+    @property
+    def widget(self):
+        return self.__widget
+
+    @widget.setter
+    def widget(self, value):
+        self.__widget = value
+
+    @property
+    def widget_label(self):
+        return self.__widget_label
+
+    @widget_label.setter
+    def widget_label(self, value):
+        self.__widget_label = value
+
+    def evaluate_visibility_condition(self, form):
+        visitor = ExpressionEvaluator(form)
+        visitor.visit(self.visibility_condition)
+        return visitor.result
+
+    def evaluate_answer(self, form):
+        visitor = ExpressionEvaluator(form)
+        visitor.visit(self.answer)
+        return visitor.result
+
+    def pyqt5_render(self, layout, form, visible=True):
+        self.widget_label = Label(self.label)
+
+        if self.computed:
+            answer_result = str(self.evaluate_answer(form))
+            self.widget = Label(answer_result)
+        else:
+            self.widget = self.answer_type.pyqt5_default_widget()
+
+        if not visible:
+            self.widget.hide()
+            self.widget_label.hide()
+
+        layout.addRow(self.widget_label, self.widget)