example translations and sense translation now unified, should behave very simmilary

- import
- export
- view
- edite translation events

src/model/example.py

@@ -1,4 +1,5 @@
 from model.editable import Editable
+from model.translation import from_container_list
 
 class Example(Editable):
     def __init__(self, example_xml):
@@ -15,7 +16,4 @@ class Example(Editable):
             
         self.original_xml = inner_xml
         self.text = inner_xml.textContent
-        
-        self.translations = []
-        for translation in example_xml.querySelectorAll("translationContainer translation"):
-            self.translations.append(translation.textContent)
+        self.translations = from_container_list(example_xml.querySelectorAll("translationContainer"))

src/model/sense.py

@@ -1,5 +1,5 @@
 from model.example import Example
-from model.translation import Translation
+from model.translation import from_container_list
 from model.editable import Editable
 from model.tags import import_label_list
 
@@ -15,18 +15,8 @@ class Sense(Editable):
         self.examples = [Example(example_xml) for example_xml in
                          sense_xml.querySelectorAll("exampleContainerList exampleContainer")]
 
-        translations = []
-        max_num_cluster = 0
-        
-        for translation_xml in sense_xml.querySelectorAll("translationContainerList translationContainer"):
-            num_cluster = int(translation_xml.getAttribute("cluster"))
-            max_num_cluster = max(max_num_cluster, num_cluster)
-            translations.append((num_cluster, Translation(translation_xml)))
-        
-        self.translations = [[] for _ in range(max_num_cluster)]
-        for clusterNum, translation in translations:
-            self.translations[clusterNum - 1].append(translation)
-    
+        self.translations = from_container_list(
+            sense_xml.querySelectorAll("translationContainerList translationContainer"))
     
     def merge_labels(self):
         return ", ".join(val for _, val in self.labels)

src/model/translation.py

@@ -2,6 +2,25 @@ from model.tags import import_label_list
 from model.editable import Editable
 
 
+def from_container_list(translation_list_container_xml):
+    translations = []
+    max_num_cluster = 0
+    
+    for translation_xml in translation_list_container_xml:
+        num_cluster = 1 # default cluster
+        if translation_xml.hasAttribute("cluster"):
+            num_cluster = int(translation_xml.getAttribute("cluster"))
+            
+        max_num_cluster = max(max_num_cluster, num_cluster)
+        translations.append((num_cluster, Translation(translation_xml)))
+        
+    result = [[] for _ in range(max_num_cluster)]
+    for clusterNum, translation in translations:
+        result[clusterNum - 1].append(translation)
+        
+    return result
+
+
 class Translation(Editable):
     def __init__(self, translation_xml):
         translation = translation_xml.querySelector("translation")