filepanel: Add Undo (checkout) to SCM Menu.

Add an option to checkout file to last commit to
the menu.

src/bin/edi_filepanel.c

@@ -389,6 +389,18 @@ _item_menu_scm_stage_cb(void *data, Evas_Object *obj EINA_UNUSED,
    edi_filepanel_item_update(sd->path);
 }
 
+static void
+_item_menu_scm_undo_cb(void *data, Evas_Object *obj EINA_UNUSED,
+                       void *event_info EINA_UNUSED)
+{
+   Edi_Dir_Data *sd = data;
+
+   edi_scm_undo(sd->path);
+   edi_filepanel_scm_status_update();
+   edi_filepanel_item_update(sd->path);
+}
+
+
 static void
 _item_menu_scm_unstage_cb(void *data, Evas_Object *obj EINA_UNUSED,
                       void *event_info EINA_UNUSED)
@@ -484,6 +496,12 @@ _item_menu_create(Evas_Object *win, Edi_Dir_Data *sd)
 
         menu_it = elm_menu_item_add(menu, NULL, NULL, eina_slstr_printf("%s...", _("Source Control")), NULL, NULL);
 
+        menu_it2 = elm_menu_item_add(menu, menu_it, "edit-undo", _("Undo Changes"), _item_menu_scm_undo_cb, sd);
+        if (status == EDI_FILE_STATUS_UNMODIFIED || status == EDI_FILE_STATUS_STAGED)
+          elm_object_item_disabled_set(menu_it2, EINA_TRUE);
+
+        elm_menu_item_separator_add(menu, menu_it);
+
         menu_it2 = elm_menu_item_add(menu, menu_it, "document-save-as", _("Stage Changes"), _item_menu_scm_stage_cb, sd);
         if (status == EDI_FILE_STATUS_UNMODIFIED || status == EDI_FILE_STATUS_STAGED)
           elm_object_item_disabled_set(menu_it2, EINA_TRUE);

src/lib/edi_scm.c

@@ -141,6 +141,21 @@ _edi_scm_git_file_unstage(const char *path)
   return code;
 }
 
+static int
+_edi_scm_git_file_undo(const char *path)
+{
+   int code;
+   Eina_Strbuf *command = eina_strbuf_new();
+
+   eina_strbuf_append_printf(command, "git checkout %s", path);
+
+   code = _edi_scm_exec(eina_strbuf_string_get(command));
+
+   eina_strbuf_free(command);
+
+   return code;
+}
+
 static int
 _edi_scm_git_file_mod(const char *path)
 {
@@ -645,6 +660,22 @@ edi_scm_unstage(const char *path)
    return result;
 }
 
+EAPI int
+edi_scm_undo(const char *path)
+{
+   char *escaped;
+   int result;
+   Edi_Scm_Engine *e = edi_scm_engine_get();
+
+   escaped = ecore_file_escape_name(path);
+
+   result = e->file_undo(escaped);
+
+   free(escaped);
+
+   return result;
+}
+
 EAPI int
 edi_scm_move(const char *src, const char *dest)
 {
@@ -809,6 +840,7 @@ _edi_scm_git_init(const char *rootdir)
    engine->file_mod = _edi_scm_git_file_mod;
    engine->file_del = _edi_scm_git_file_del;
    engine->file_unstage = _edi_scm_git_file_unstage;
+   engine->file_undo = _edi_scm_git_file_undo;
    engine->move = _edi_scm_git_file_move;
    engine->status = _edi_scm_git_status;
    engine->diff = _edi_scm_git_diff;

src/lib/edi_scm.h

@@ -35,6 +35,7 @@ typedef struct _Edi_Scm_Status
 
 typedef int (scm_fn_stage)(const char *path);
 typedef int (scm_fn_unstage)(const char *path);
+typedef int (scm_fn_undo)(const char *path);
 typedef int (scm_fn_mod)(const char *path);
 typedef int (scm_fn_del)(const char *path);
 typedef int (scm_fn_move)(const char *src, const char *dest);
@@ -63,6 +64,7 @@ typedef struct _Edi_Scm_Engine
 
    scm_fn_stage       *file_stage;
    scm_fn_unstage     *file_unstage;
+   scm_fn_undo        *file_undo;
    scm_fn_mod         *file_mod;
    scm_fn_del         *file_del;
    scm_fn_move        *move;
@@ -176,6 +178,16 @@ int edi_scm_stage(const char *path);
 */
 int edi_scm_unstage(const char *path);
 
+/**
+ * Reset file changes to last commit state.
+ *
+ * @param path The file path.
+ * @return The status code of command executed.
+ *
+ * @ingroup Scm
+*/
+int edi_scm_undo(const char *path);
+
 /**
  * Del file from those monitored by SCM.
  *