file operations: Add duplicate button (#2841)

This feature appears in the GUI as a new button "Autorename" added to all the different conflict dialogs
This uses the native "unique name" policy that allows copying/moving a file/folder with the same name than another in detination folder by renaming it automatically in this fashion:
"example file (copy).txt" "example file (another copy).txt" "example file (3rd copy).txt" etc.
The main interest of this new feature is its cumulation with the "apply to all" checkbox, allowing automatic renaming for all conflicts.

libnemo-private/nemo-file-conflict-dialog.c

@@ -57,6 +57,7 @@ struct _NemoFileConflictDialogDetails
 	GtkWidget *checkbox;
 	GtkWidget *rename_button;
 	GtkWidget *replace_button;
+	GtkWidget *auto_rename_button;
 	GtkWidget *dest_image;
 	GtkWidget *src_image;
 };
@@ -558,6 +559,12 @@ nemo_file_conflict_dialog_init (NemoFileConflictDialog *fcd)
 				_("_Skip"),
 				CONFLICT_RESPONSE_SKIP,
 				NULL);
+
+	details->auto_rename_button =
+		gtk_dialog_add_button (dialog,
+					   _("Auto_rename"),
+					   CONFLICT_RESPONSE_AUTO_RENAME);
+
 	details->rename_button =
 		gtk_dialog_add_button (dialog,
 				       _("Re_name"),

libnemo-private/nemo-file-conflict-dialog.h

@@ -62,8 +62,9 @@ struct _NemoFileConflictDialogClass {
 enum
 {
 	CONFLICT_RESPONSE_SKIP = 1,
-	CONFLICT_RESPONSE_REPLACE = 2,
-	CONFLICT_RESPONSE_RENAME = 3,
+	CONFLICT_RESPONSE_AUTO_RENAME = 2,
+	CONFLICT_RESPONSE_REPLACE = 3,
+	CONFLICT_RESPONSE_RENAME = 4
 };
 
 GType nemo_file_conflict_dialog_get_type (void) G_GNUC_CONST;

libnemo-private/nemo-file-operations.c

@@ -100,6 +100,7 @@ typedef struct {
 	gboolean skip_all_error;
 	gboolean skip_all_conflict;
 	gboolean merge_all;
+	gboolean auto_rename_all;
 	gboolean replace_all;
 	gboolean delete_all;
 } CommonJob;
@@ -4616,7 +4617,7 @@ copy_move_file (CopyMoveJob *copy_job,
 
 		g_error_free (error);
 
-		if (unique_names) {
+		if (unique_names || job->auto_rename_all) {
 			g_object_unref (dest);
 			dest = get_unique_target_file (src, dest_dir, same_fs, *dest_fs_type, unique_name_nr++);
 			goto retry;
@@ -4666,6 +4667,13 @@ copy_move_file (CopyMoveJob *copy_job,
 								 resp->new_name);
 			conflict_response_data_free (resp);
 			goto retry;
+		} else if (resp->id == CONFLICT_RESPONSE_AUTO_RENAME) {
+			if (resp->apply_to_all) {
+				job->auto_rename_all = TRUE;
+			}
+			unique_names = TRUE;
+			conflict_response_data_free (resp);
+			goto retry;
 		} else {
 			g_assert_not_reached ();
 		}
@@ -5130,6 +5138,7 @@ move_file_prepare (CopyMoveJob *move_job,
 	GError *error;
 	CommonJob *job;
 	gboolean overwrite;
+	gboolean auto_rename;
 	char *primary, *secondary, *details;
 	int response;
 	GFileCopyFlags flags;
@@ -5275,6 +5284,12 @@ move_file_prepare (CopyMoveJob *move_job,
 			goto retry;
 		}
 
+		if (job->auto_rename_all || auto_rename) {
+			g_object_unref (dest);
+			dest = get_unique_target_file (src, dest_dir, same_fs, *dest_fs_type, 1);
+			goto retry;
+		}
+
 		if (job->skip_all_conflict) {
 			goto out;
 		}
@@ -5307,6 +5322,13 @@ move_file_prepare (CopyMoveJob *move_job,
 								 resp->new_name);
 			conflict_response_data_free (resp);
 			goto retry;
+		} else if (resp->id == CONFLICT_RESPONSE_AUTO_RENAME) {
+			if (resp->apply_to_all) {
+				job->auto_rename_all = TRUE;
+			}
+			auto_rename = TRUE;
+			conflict_response_data_free (resp);
+			goto retry;
 		} else {
 			g_assert_not_reached ();
 		}