Refactoring: Use interfaces instead of classes

Replaces some usages of zcl_abapgit_repo and zcl_abapgit_repo_online
with the corresponding interfaces.

**interface of ZIF_ABAPGIT_EXIT is changed**

src/exits/zif_abapgit_exit.intf.abap

@@ -169,7 +169,7 @@ INTERFACE zif_abapgit_exit PUBLIC.
     IMPORTING
       !is_comment TYPE zif_abapgit_git_definitions=>ty_comment
       !io_stage   TYPE REF TO zcl_abapgit_stage
-      !io_repo    TYPE REF TO zcl_abapgit_repo_online
+      !io_repo    TYPE REF TO zif_abapgit_repo_online
     RAISING
       zcx_abapgit_exception.
 

src/repo/stage/zcl_abapgit_stage_logic.clas.abap

@@ -21,7 +21,7 @@ CLASS zcl_abapgit_stage_logic DEFINITION
 
     CLASS-METHODS:
       remove_ignored
-        IMPORTING io_repo  TYPE REF TO zcl_abapgit_repo_online
+        IMPORTING io_repo  TYPE REF TO zif_abapgit_repo_online
         CHANGING  cs_files TYPE zif_abapgit_definitions=>ty_stage_files,
       remove_identical
         CHANGING cs_files TYPE zif_abapgit_definitions=>ty_stage_files.

src/repo/stage/zif_abapgit_stage_logic.intf.abap

@@ -3,7 +3,7 @@ INTERFACE zif_abapgit_stage_logic
 
   METHODS get
     IMPORTING
-      !io_repo        TYPE REF TO zcl_abapgit_repo_online
+      !io_repo        TYPE REF TO zif_abapgit_repo_online
       !ii_obj_filter  TYPE REF TO zif_abapgit_object_filter OPTIONAL
     RETURNING
       VALUE(rs_files) TYPE zif_abapgit_definitions=>ty_stage_files

src/repo/zif_abapgit_repo_online.intf.abap

@@ -2,6 +2,41 @@ INTERFACE zif_abapgit_repo_online PUBLIC.
 
   INTERFACES zif_abapgit_repo.
 
+  ALIASES ms_data
+    FOR zif_abapgit_repo~ms_data .
+  ALIASES deserialize
+    FOR zif_abapgit_repo~deserialize .
+  ALIASES deserialize_checks
+    FOR zif_abapgit_repo~deserialize_checks .
+  ALIASES get_dot_abapgit
+    FOR zif_abapgit_repo~get_dot_abapgit .
+  ALIASES get_tadir_objects
+    FOR zif_abapgit_repo~get_tadir_objects .
+  ALIASES get_files_local
+    FOR zif_abapgit_repo~get_files_local .
+  ALIASES get_files_local_filtered
+    FOR zif_abapgit_repo~get_files_local_filtered .
+  ALIASES get_files_remote
+    FOR zif_abapgit_repo~get_files_remote .
+  ALIASES get_key
+    FOR zif_abapgit_repo~get_key .
+  ALIASES get_local_settings
+    FOR zif_abapgit_repo~get_local_settings .
+  ALIASES get_name
+    FOR zif_abapgit_repo~get_name .
+  ALIASES get_package
+    FOR zif_abapgit_repo~get_package .
+  ALIASES is_offline
+    FOR zif_abapgit_repo~is_offline .
+  ALIASES refresh
+    FOR zif_abapgit_repo~refresh .
+  ALIASES set_dot_abapgit
+    FOR zif_abapgit_repo~set_dot_abapgit .
+  ALIASES find_remote_dot_abapgit
+    FOR zif_abapgit_repo~find_remote_dot_abapgit .
+  ALIASES has_remote_source
+    FOR zif_abapgit_repo~has_remote_source .
+
   METHODS get_url
     RETURNING
       VALUE(rv_url) TYPE zif_abapgit_persistence=>ty_repo-url .

src/ui/lib/zcl_abapgit_gui_chunk_lib.clas.abap

@@ -26,7 +26,7 @@ CLASS zcl_abapgit_gui_chunk_lib DEFINITION
         VALUE(ri_html) TYPE REF TO zif_abapgit_html .
     CLASS-METHODS render_repo_top
       IMPORTING
-        !io_repo               TYPE REF TO zcl_abapgit_repo
+        !io_repo               TYPE REF TO zif_abapgit_repo
         !iv_show_package       TYPE abap_bool DEFAULT abap_true
         !iv_show_branch        TYPE abap_bool DEFAULT abap_true
         !iv_show_commit        TYPE abap_bool DEFAULT abap_true

src/ui/pages/zcl_abapgit_gui_page_commit.clas.abap

@@ -11,7 +11,7 @@ CLASS zcl_abapgit_gui_page_commit DEFINITION
 
     CLASS-METHODS create
       IMPORTING
-        !io_repo       TYPE REF TO zcl_abapgit_repo_online
+        !io_repo       TYPE REF TO zif_abapgit_repo_online
         !io_stage      TYPE REF TO zcl_abapgit_stage
         !iv_sci_result TYPE zif_abapgit_definitions=>ty_sci_result DEFAULT zif_abapgit_definitions=>c_sci_result-no_run
       RETURNING
@@ -20,7 +20,7 @@ CLASS zcl_abapgit_gui_page_commit DEFINITION
         zcx_abapgit_exception.
     METHODS constructor
       IMPORTING
-        !io_repo       TYPE REF TO zcl_abapgit_repo_online
+        !io_repo       TYPE REF TO zif_abapgit_repo_online
         !io_stage      TYPE REF TO zcl_abapgit_stage
         !iv_sci_result TYPE zif_abapgit_definitions=>ty_sci_result
       RAISING
@@ -53,7 +53,7 @@ CLASS zcl_abapgit_gui_page_commit DEFINITION
     DATA mo_form_util TYPE REF TO zcl_abapgit_html_form_utils.
     DATA mo_validation_log TYPE REF TO zcl_abapgit_string_map.
     DATA mo_settings TYPE REF TO zcl_abapgit_settings.
-    DATA mo_repo TYPE REF TO zcl_abapgit_repo_online.
+    DATA mo_repo TYPE REF TO zif_abapgit_repo_online.
     DATA mo_stage TYPE REF TO zcl_abapgit_stage.
     DATA mt_stage TYPE zif_abapgit_definitions=>ty_stage_tt.
     DATA ms_commit TYPE zif_abapgit_services_git=>ty_commit_fields.

src/ui/pages/zcl_abapgit_gui_page_stage.clas.abap

@@ -21,7 +21,7 @@ CLASS zcl_abapgit_gui_page_stage DEFINITION
 
     CLASS-METHODS create
       IMPORTING
-        io_repo          TYPE REF TO zcl_abapgit_repo_online
+        io_repo          TYPE REF TO zif_abapgit_repo_online
         iv_seed          TYPE string OPTIONAL
         iv_sci_result    TYPE zif_abapgit_definitions=>ty_sci_result DEFAULT zif_abapgit_definitions=>c_sci_result-no_run
         ii_obj_filter    TYPE REF TO zif_abapgit_object_filter OPTIONAL
@@ -33,7 +33,7 @@ CLASS zcl_abapgit_gui_page_stage DEFINITION
 
     METHODS constructor
       IMPORTING
-        io_repo          TYPE REF TO zcl_abapgit_repo_online
+        io_repo          TYPE REF TO zif_abapgit_repo_online
         iv_seed          TYPE string OPTIONAL
         iv_sci_result    TYPE zif_abapgit_definitions=>ty_sci_result DEFAULT zif_abapgit_definitions=>c_sci_result-no_run
         ii_obj_filter    TYPE REF TO zif_abapgit_object_filter OPTIONAL
@@ -54,7 +54,7 @@ CLASS zcl_abapgit_gui_page_stage DEFINITION
     TYPES:
       ty_changed_by_tt TYPE SORTED TABLE OF ty_changed_by WITH UNIQUE KEY item filename.
 
-    DATA mo_repo TYPE REF TO zcl_abapgit_repo_online .
+    DATA mo_repo TYPE REF TO zif_abapgit_repo_online.
     DATA ms_files TYPE zif_abapgit_definitions=>ty_stage_files .
     DATA mv_seed TYPE string .               " Unique page id to bind JS sessionStorage
     DATA mv_filter_value TYPE string .

src/ui/routing/zcl_abapgit_services_git.clas.abap

@@ -36,7 +36,7 @@ CLASS zcl_abapgit_services_git DEFINITION
         zcx_abapgit_exception.
     CLASS-METHODS commit
       IMPORTING
-        !io_repo   TYPE REF TO zcl_abapgit_repo_online
+        !io_repo   TYPE REF TO zif_abapgit_repo_online
         !is_commit TYPE zif_abapgit_services_git=>ty_commit_fields
         !io_stage  TYPE REF TO zcl_abapgit_stage
       RAISING