Work on native gui design and install documentation

INSTALL

@@ -66,6 +66,18 @@ Customize path and access rights to your needs
   chown -R www-data /var/local/yms
   chmod -R 750 /var/local/yms
 
+To grant access for the local gui the directory has to be writeable by a special
+group (here as example 'yms'). The user which runs the local gui (here
+'guiuser') has also to be a member of that group as well as the webserver user
+''www-data'.
+
+  groupadd yms
+  usermod -aG yms www-data
+  usermod -aG yms guiuser
+  chgrp yms /var/local/yms
+  chgrp yms /var/local/yms/thumb
+  chmod -R 770 /var/local/yms
+
 5. Install webgui
 
 5.1 Upload webgui files

yms/database.py

@@ -8,6 +8,7 @@ class Database():
         self.conn = None
         self.cur = None
         self.dcur = None
+        self.error = None
 
     def connect(self, dbuser, dbpass):
         if self.conn:
@@ -17,7 +18,7 @@ class Database():
             self.conn = MySQLdb.connect(host=self.hostname, db=self.schema,
                 user=dbuser, passwd=dbpass, charset='utf8')
         except MySQLdb.Error as e:
-            print(e)
+            self.error = e
             return False
         self.cur = self.conn.cursor()
         self.dcur = self.conn.cursor(MySQLdb.cursors.DictCursor)
@@ -32,7 +33,7 @@ class Database():
             self.conn = MySQLdb.connect(host='localhost', db=self.schema,
                 unix_socket='/run/mysqld/mysqld.sock', charset='utf8')
         except MySQLdb.Error as e:
-            print(e)
+            self.error = e
             return False
         self.cur = self.conn.cursor()
         self.dcur = self.conn.cursor(MySQLdb.cursors.DictCursor)
@@ -45,3 +46,11 @@ class Database():
 
     def is_connected(self):
         return self.conn.open
+
+    def last_error(self):
+        if not self.error:
+            return(0, '')
+        code = self.error.args[0]
+        text = self.error.args[1]
+        self.error = None
+        return(code, text)

yms/gtkutils.py

@@ -17,7 +17,8 @@ def init_named_controls(window, builder):
         'tbl': 'table',
         'mnu': 'menu',
         'img': 'image',
-        'drw': 'area'
+        'drw': 'area',
+        'stk': 'stack'
     }
     for ctrl in ctrltype.values():
         setattr(window, ctrl, {})

ymsgui.py

@@ -2,6 +2,9 @@
 
 """
 
+YMS native GUI.
+Runs as user SYSTEM with id=0
+
 Configuration file located at ~/.config/ymsgui.conf:
   [DB]
   host = localhost
@@ -31,7 +34,8 @@ cfg = {
     'cfgfile': '~/.config/ymsgui.conf',
     'host': 'localhost',
     'db': 'yms',
-    'user': 'yms'
+    'user': 'yms',
+    'docpath': '/var/local/yms'
 }
 
 class Frontend():
@@ -73,13 +77,27 @@ class Frontend():
         Gtk.main()
 
     def on_but_info_clicked(self, widget):
-
         # Userlist
         sql = ("SELECT userid, login, displayname FROM user ORDER BY login")
         db.cur.execute(sql)
         for row in db.cur.fetchall():
             print(row)
 
+    def on_but_equip_detail_clicked(self, widget):
+        self.stack['equipment'].set_visible_child(self.box['equip_detail'])
+
+    def on_but_equip_edit_clicked(self, widget):
+        self.stack['equipment'].set_visible_child(self.box['equip_edit'])
+
+    def on_but_equip_save_clicked(self, widget):
+        pass
+
+    def on_but_equip_cancel_clicked(self, widget):
+        self.stack['equipment'].set_visible_child(self.box['equipment'])
+
+    def on_but_equip_cancel_clicked(self, widget):
+        self.stack['equipment'].set_visible_child(self.box['equipment'])
+
     def on_destroy(self, widget, data=None):
         Gtk.main_quit()
 
@@ -101,12 +119,14 @@ def create_config(cfgfile):
     # create inital config file
     with open(cfgfile, 'w') as fh:
         fh.write('[DB]\n')
-        fh.write('host = localhost\n')
+        fh.write('host = {}\n'.format(cfg['host']))
-        fh.write('db = yms\n')
+        fh.write('db = {}\n'.format(cfg['db']))
-        fh.write('user = yms\n')
+        fh.write('user = {}\n'.format(cfg['user']))
-        fh.write('pass = geheim\n\n')
+        fh.write('pass = changeme!\n\n')
         fh.write('[documents]\n')
-        fh.write('basepath = /var/local/yms\n')
+        fh.write('basepath = {}\n'.format(cfg['docpath']))
+    # secure configuration
+    os.chmod(cfgfile, 0o600)
 
 if __name__ == "__main__":
     locale.setlocale(locale.LC_ALL, '')
@@ -117,7 +137,11 @@ if __name__ == "__main__":
     cfgfile = os.path.expanduser(cfg['cfgfile'])
     if not config.read(cfgfile):
         create_config(cfgfile)
-        messagebox(_("Configuration file not found"), title="YMS")
+        messagebox(_("Configuration file '%s' not found.\n"
+                     "Default configuration has been created.\n"
+                     "Please edit that file according to your needs.\n\n"
+                     "Then restart this program."
+                     ) % cfgfile, title="YMS")
     else:
         cfg['host'] = config.get('DB', 'host')
         cfg['db'] = config.get('DB', 'db')
@@ -129,6 +153,10 @@ if __name__ == "__main__":
             app.run()
             db.disconnect()
         else:
-            messagebox(_("Database connection cannot be established"), title="YMS")
+            errno, errtxt = db.last_error()
+            messagebox(_("Database connection cannot be established.\n\n"
+                         "Server: %s\nDatabase: %s\n"
+                         "Error: %s (%d)"
+                         ) % (cfg['host'], cfg['db'], errtxt, errno), title="YMS")
 
 # Another fine product of the sirius cybernetics corporation