Update general.md

Author: oblomov-dev

docs/development/general.md

@@ -1,4 +1,4 @@
-# General
+# Controller
 
 abap2UI5 offers great flexibility in app development. Most sample applications follow a process similar to the sequence outlined below. You can use it as a starting point, but feel free to create your own sequence or build a wrapper on top of abap2UI5 for more customized behavior:
 
@@ -12,33 +12,30 @@ ENDCLASS.
 
 CLASS z2ui5_cl_app IMPLEMENTATION.
   METHOD z2ui5_if_app~main.
-    TRY.
+    CASE abap_true.
 
-        CASE abap_true.
-
-          WHEN client->check_on_init( ).
-            "...
+      "first start, init your app here...
+      WHEN client->check_on_init( ).
 
-          WHEN client->check_on_navigated( ).
-            DATA(lo_app_prev) = client->get_app_prev( ).
-            "...
+      "after coming back from another app
+      WHEN client->check_on_navigated( ).
+        "read the previous app
+        DATA(lo_app_prev) = client->get_app_prev( ).
 
-          WHEN client->check_on_event( ).
-            DATA(lt_arg) = client->get_event_arg( ).
+      after user event
+      WHEN client->check_on_event( ).
+        "read event information
+        DATA(lt_arg) = client->get_event_arg( ).
 
-            CASE abap_true.
-              WHEN client->check_on_event( `OK` ).
-                "...
+        "handle event
+        CASE abap_true.
+          WHEN client->check_on_event( `OK` ).
 
-              WHEN client->check_on_event( `CANCEL` ).
-                "...
+          WHEN client->check_on_event( `CANCEL` ).
 
-            ENDCASE.
         ENDCASE.
 
-      CATCH cx_root INTO DATA(lx).
-        client->message_box_display( lx ).
-    ENDTRY.
+    ENDCASE.
   ENDMETHOD.
 ENDCLASS.
 ````