diff --git a/Dockerfile b/Dockerfile
index 20788e8..86703e1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -51,7 +51,8 @@ ENV TFW_APP_DIR="/srv/app"
 ENV TFW_FRONTEND_DIR="/srv/frontend"
 ENV TFW_LOGIN_APP_DIR="/tmp/source_code_server"
 ENV TFW_TERMINADO_DIR="/tmp/terminado_server"
-ENV TFW_TERMINADO_WD="/home/${AVATAO_USER}"
+ENV TFW_WEBIDE_WD="/home/${AVATAO_USER}/workdir"
+ENV TFW_TERMINADO_WD=${TFW_WEBIDE_WD}
 ENV TFW_LIB_DIR="/usr/local/lib/"
 ENV TFW_SUPERVISORD_CONF="/etc/supervisor/supervisord.conf"
 ENV TFW_SUPERVISORD_COMPONENTS="/etc/supervisor/conf"
@@ -75,6 +76,12 @@ COPY src/event_handlers ${TFW_EVENT_HANDLERS_DIR}
 
 RUN mv /data/dist ${TFW_FRONTEND_DIR}
 
+COPY src/event_handlers/source_code_server/server.py ${TFW_LOGIN_APP_DIR}/
+COPY src/event_handlers/source_code_server/users.db ${TFW_LOGIN_APP_DIR}/
+COPY src/event_handlers/source_code_server/login_component.py ${TFW_WEBIDE_WD}/
+
+RUN chown -R ${AVATAO_USER} ${TFW_WEBIDE_WD}
+
 USER ${AVATAO_USER}
 WORKDIR /home/${AVATAO_USER}
 
diff --git a/lib/tfw/config/envvars.py b/lib/tfw/config/envvars.py
index 297c4bd..002dbc3 100644
--- a/lib/tfw/config/envvars.py
+++ b/lib/tfw/config/envvars.py
@@ -7,6 +7,7 @@ SUPERVISOR_HTTP_PORT = os.getenv('TFW_SUPERVISOR_PORT', 9001)
 LOGIN_APP_PORT = os.getenv('TFW_LOGIN_APP_PORT', 6666)
 TERMINADO_PORT = os.getenv('TFW_TERMINADO_PORT', 9999)
 TERMINADO_WD = os.getenv('TFW_TERMINADO_WD')
+WEBIDE_WD = os.getenv('TFW_WEBIDE_WD')
 
 SUPERVISOR_HTTP_URI = 'http://localhost:{}'.format(SUPERVISOR_HTTP_PORT)
 
diff --git a/lib/tfw/config/logs.py b/lib/tfw/config/logs.py
index 94412b9..b9f9ca8 100644
--- a/lib/tfw/config/logs.py
+++ b/lib/tfw/config/logs.py
@@ -1,3 +1,3 @@
 import logging
 
-logging.basicConfig(level=logging.CRITICAL)
+logging.basicConfig(level=logging.DEBUG)
diff --git a/lib/tfw/util.py b/lib/tfw/util.py
index 4785ed4..82f4169 100644
--- a/lib/tfw/util.py
+++ b/lib/tfw/util.py
@@ -1,4 +1,6 @@
 import xmlrpc.client, zmq
+from contextlib import suppress
+from xmlrpc.client import Fault as SupervisorFault
 
 from .config.envvars import SUPERVISOR_HTTP_URI
 
@@ -14,6 +16,17 @@ def create_source_code_response_data(filename, content, language):
 class SupervisorMixin:
     supervisor = xmlrpc.client.ServerProxy(SUPERVISOR_HTTP_URI).supervisor
 
+    def stop_process(self):
+        with suppress(SupervisorFault):
+            self.supervisor.stopProcess(self.process_name)
+
+    def start_process(self):
+        self.supervisor.startProcess(self.process_name)
+
+    def restart_process(self):
+        self.stop_process()
+        self.start_process()
+
 
 class ZMQConnectorBase:
     def __init__(self, zmq_context=None):
diff --git a/src/event_handlers/event_handler_main.py b/src/event_handlers/event_handler_main.py
index add1bb1..327dedb 100644
--- a/src/event_handlers/event_handler_main.py
+++ b/src/event_handlers/event_handler_main.py
@@ -2,8 +2,10 @@ from source_code_event_handler import SourceCodeEventHandler
 from terminado_event_handler import TerminadoEventHandler
 from tornado.ioloop import IOLoop
 
+from tfw.config.envvars import WEBIDE_WD
+
 
 if __name__ == '__main__':
-    anchor_webide = SourceCodeEventHandler('anchor_webide', 'login_component.py', 'login')
+    anchor_webide = SourceCodeEventHandler('anchor_webide', WEBIDE_WD, 'login')
     anchor_terminado = TerminadoEventHandler('anchor_terminado', 'terminado')
     IOLoop.instance().start()
diff --git a/src/event_handlers/source_code_event_handler.py b/src/event_handlers/source_code_event_handler.py
index 4620729..b426f4a 100644
--- a/src/event_handlers/source_code_event_handler.py
+++ b/src/event_handlers/source_code_event_handler.py
@@ -1,69 +1,99 @@
-from shutil import copy, rmtree, copytree
-from os.path import splitext
-from contextlib import suppress
-from xmlrpc.client import Fault as SupervisorFault
+from os.path import splitext, isfile, join, relpath
+from glob import glob
 
 from tfw.util import SupervisorMixin
-from tfw.config import LOGIN_APP_DIR
 from tfw.event_handler_base import EventHandlerBase
 
+from tfw.config.logs import logging
+log = logging.getLogger(__name__)
+
+
+class FileManager:
+    def __init__(self, working_directory, selected_file=None):
+        self.exclude = ['__pycache__']
+        self._workdir = working_directory
+        self.filename = selected_file or self._relpath(self.files[0])
+        self.language = map_file_extension_to_language(self.filename)
+
+    def select_file(self, filename):
+        if not filename in self.files:
+           raise EnvironmentError('No such file in workdir!')
+        self.filename = filename
+        self.language = map_file_extension_to_language(self.filename)
+
+    @property
+    def files(self):
+        return [self._relpath(file) for file in glob(join(self._workdir, '**/*'), recursive=True)
+                if isfile(file) and
+                not any(word in file for word in self.exclude)]
+
+    @property
+    def file_contents(self):
+        with open(self._filepath(self.filename), 'r', errors='surrogateescape') as ifile:
+            return ifile.read()
+
+    @file_contents.setter
+    def file_contents(self, value):
+        with open(self._filepath(self.filename), 'w', errors='surrogateescape') as ofile:
+            ofile.write(value)
+
+    def _filepath(self, filename):
+        return join(self._workdir, filename)
+
+    def _relpath(self, filename):
+        return relpath(self._filepath(filename), start=self._workdir)
+
 
 class SourceCodeEventHandler(EventHandlerBase, SupervisorMixin):
-    def __init__(self, anchor, filename, process_name=None):
+    def __init__(self, anchor, directory, process_name, selected_file=None):
         super().__init__(anchor)
-        self.working_directory = LOGIN_APP_DIR
-        self.filename = filename
-        self.language = map_file_extension_to_language(filename)
-        self.process_name = process_name or splitext(filename)[0]
+        self.filemanager = FileManager(directory, selected_file=selected_file)
+        self.process_name = process_name
+
         self.commands = {
-            'read': self.read_file,
-            'write': self.write_file
+            'read': self.read,
+            'write': self.write,
+            'select': self.select
         }
 
-        self.file = self.create_initial_state()
+    def read(self, data):
+        try: data['content'] = self.filemanager.file_contents
+        except PermissionError: data['content'] = 'You have no permission to open that file :('
+        data['filename'] = self.filemanager.filename
+        data['language'] = self.filemanager.language
+        data['files'] = self.filemanager.files
+        return data
+
+    def write(self, data):
+        try: self.filemanager.file_contents = data['content']
+        except Exception: log.exception('Error reading file!')
+        data['files'] = self.filemanager.files
+        self.restart_process()
+        return data
+
+    def select(self, data):
+        try: self.filemanager.select_file(data['filename'])
+        except EnvironmentError: log.exception('Failed to select file "{}"'.format(data['filename']))
+        return data
 
     def handle_event(self, anchor, data_json):
         data = data_json['data']
-        self.commands[data['command']](data_json)
+        data_json['data'] = self.commands[data['command']](data)
         return data_json
 
-    def handle_reset(self, data_json):
-        self.create_initial_state()
-
-    def read_file(self, data_json):
-        with open(self.file, 'r') as ifile:
-            content = ifile.read()
-        data_json['data'] = {
-            'filename': self.filename,
-            'content': content,
-            'language': self.language
-        }
-
-    def write_file(self, data_json):
-        data = data_json['data']
-        with open(self.file, 'w') as ofile:
-            ofile.write(data['content'])
-        self.supervisor.stopProcess(self.process_name)
-        self.supervisor.startProcess(self.process_name)
-
-    def create_initial_state(self):
-        with suppress(SupervisorFault):
-            self.supervisor.stopProcess(self.process_name)
-
-        rmtree(self.working_directory, ignore_errors=True)
-        copytree('source_code_server/', self.working_directory)
-        file = copy(self.filename, self.working_directory)
-
-        self.supervisor.startProcess(self.process_name)
-
-        return file
-
 
 def map_file_extension_to_language(filename):
     language_map = {
-        # TODO: extend, maybe auto-generate???
         '.py': 'python',
-        '.js': 'javascript'
+        '.js': 'javascript',
+        '.html': 'html',
+        '.css': 'css',
+        '.java': 'java',
+        '.cpp': 'c_cpp',
+        '.hpp': 'c_cpp',
+        '.c': 'c_cpp',
+        '.h': 'c_cpp',
+        '.cs': 'csharp'
     }
     _, extension = splitext(filename)
-    return language_map[extension]
+    return language_map.get(extension, 'text')
\ No newline at end of file
diff --git a/src/event_handlers/login_component.py b/src/event_handlers/source_code_server/login_component.py
similarity index 100%
rename from src/event_handlers/login_component.py
rename to src/event_handlers/source_code_server/login_component.py
diff --git a/src/event_handlers/source_code_server/server.py b/src/event_handlers/source_code_server/server.py
index 96afb6a..e9b0b25 100644
--- a/src/event_handlers/source_code_server/server.py
+++ b/src/event_handlers/source_code_server/server.py
@@ -1,9 +1,10 @@
-import json
-
+import json, sys
 from tornado.ioloop import IOLoop
 from tornado.web import RequestHandler, Application
 
-from tfw.config import LOGIN_APP_PORT
+from tfw.config import LOGIN_APP_PORT, WEBIDE_WD
+
+sys.path.append(WEBIDE_WD)
 from login_component import authorize_login
 
 
diff --git a/src/event_handlers/terminado_event_handler.py b/src/event_handlers/terminado_event_handler.py
index 463af7e..4554d28 100644
--- a/src/event_handlers/terminado_event_handler.py
+++ b/src/event_handlers/terminado_event_handler.py
@@ -17,7 +17,7 @@ class TerminadoEventHandler(EventHandlerBase, SupervisorMixin):
     def setup_terminado_server(self):
         rmtree(self.working_directory, ignore_errors=True)
         copytree('terminado_server/', self.working_directory)
-        self.supervisor.startProcess(self.process_name)
+        self.start_process()
 
     def handle_event(self, anchor, data_json):
         log.debug('TerminadoEventHandler received event for anchor {}'.format(anchor))
diff --git a/src/frontend b/src/frontend
index 7e4bc12..a6ee391 160000
--- a/src/frontend
+++ b/src/frontend
@@ -1 +1 @@
-Subproject commit 7e4bc12616026c10829c5b50984f6053e31d3b82
+Subproject commit a6ee39156b49b003a23cce27e9be25a5e6494a1f