TextEditor: Move CompletionAssistProvider construction

... to the editor factories and pass it to the document, not the widget.
Saves some code, puts fewer objects into the object pool.

Change-Id: Iaaf250af74dc4e0c62700873accbb40ba88b7d9e
Reviewed-by: Christian Stenger <christian.stenger@digia.com>
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/android/javaeditor.cpp

@@ -48,20 +48,6 @@
 namespace Android {
 namespace Internal {
 
-//
-// JavaEditorWidget
-//
-
-class JavaEditorWidget : public TextEditor::TextEditorWidget
-{
-public:
-    JavaEditorWidget()
-    {
-        setCompletionAssistProvider(ExtensionSystem::PluginManager::getObject<JavaCompletionAssistProvider>());
-    }
-};
-
-
 //
 // JavaDocument
 //
@@ -106,12 +92,11 @@ JavaEditorFactory::JavaEditorFactory()
     addMimeType(Constants::JAVA_MIMETYPE);
 
     setDocumentCreator([]() { return new JavaDocument; });
-    setEditorWidgetCreator([]() { return new JavaEditorWidget; });
     setAutoCompleterCreator([]() { return new JavaAutoCompleter; });
     setGenericSyntaxHighlighter(QLatin1String(Constants::JAVA_MIMETYPE));
     setCommentStyle(Utils::CommentDefinition::CppStyle);
-
     setEditorActionHandlers(TextEditor::TextEditorActionHandler::UnCommentSelection);
+    setCompletionAssistProvider(new JavaCompletionAssistProvider);
 }
 
 } // namespace Internal