From 3fa39154f089a6fadc1a14eb6b206e2d2875be71 Mon Sep 17 00:00:00 2001
From: Yu-Jie Lin <livibetter@gmail.com>
Date: Sat, 13 Aug 2011 22:51:39 +0800
Subject: Add reload functionality for directories (derf#14)

---
 src/filelist.c  |  1 +
 src/filelist.h  |  1 +
 src/options.c   |  2 ++
 src/slideshow.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 47 insertions(+)

diff --git a/src/filelist.c b/src/filelist.c
index e55e80a..3279bce 100644
--- a/src/filelist.c
+++ b/src/filelist.c
@@ -29,6 +29,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "options.h"
 
 gib_list *filelist = NULL;
+gib_list *original_file_items = NULL; // original file items from argv
 int filelist_len = 0;
 gib_list *current_file = NULL;
 extern int errno;
diff --git a/src/filelist.h b/src/filelist.h
index 617236f..9ec302c 100644
--- a/src/filelist.h
+++ b/src/filelist.h
@@ -82,6 +82,7 @@ int feh_cmp_size(void *file1, void *file2);
 int feh_cmp_format(void *file1, void *file2);
 
 extern gib_list *filelist;
+extern gib_list *original_file_items;
 extern int filelist_len;
 extern gib_list *current_file;
 
diff --git a/src/options.c b/src/options.c
index c29f057..70eb9d5 100644
--- a/src/options.c
+++ b/src/options.c
@@ -784,6 +784,8 @@ static void feh_parse_option_array(int argc, char **argv, int finalrun)
 	/* Now the leftovers, which must be files */
 	if (optind < argc) {
 		while (optind < argc) {
+			if (opt.reload)
+				original_file_items = gib_list_add_front(original_file_items, estrdup(argv[optind]));
 			/* If recursive is NOT set, but the only argument is a directory
 			   name, we grab all the files in there, but not subdirs */
 			add_file_to_filelist_recursively(argv[optind++], FILELIST_FIRST);
diff --git a/src/slideshow.c b/src/slideshow.c
index f33ae9e..b30602b 100644
--- a/src/slideshow.c
+++ b/src/slideshow.c
@@ -89,8 +89,51 @@ void cb_slide_timer(void *data)
 
 void cb_reload_timer(void *data)
 {
+	gib_list *l;
+	char *current_filename;
+
 	winwidget w = (winwidget) data;
 
+	// save the current filename for refinding it in new list
+	current_filename = estrdup(FEH_FILE(current_file->data)->filename);
+	gib_list_free_and_data(filelist);
+	filelist = NULL;
+	filelist_len = 0;
+	current_file = NULL;
+
+	// rebuild filelist from original_file_items
+	if (gib_list_length(original_file_items) > 0)
+		for (l = gib_list_last(original_file_items); l; l = l->prev)
+			add_file_to_filelist_recursively(l->data, FILELIST_FIRST);
+	else if (!opt.filelistfile && !opt.bgmode)
+		add_file_to_filelist_recursively(".", FILELIST_FIRST);
+	
+	if (!(filelist_len = gib_list_length(filelist))) {
+		fprintf(stderr, "No files found to reload.\n");
+		exit(1);
+	}
+
+	// find the previously current file
+	for (l = filelist; l; l = l->next)
+		if (strcmp(FEH_FILE(l->data)->filename, current_filename) == 0) {
+			current_file = l;
+			break;
+		}
+
+	free(current_filename);
+
+	filelist = gib_list_first(gib_list_reverse(filelist));
+
+	if (!current_file)
+		current_file = filelist;
+	w->file = current_file;
+
+	// reset window name in case of current file order,
+	// filename, or filelist_length has changed.
+	current_filename = slideshow_create_name(FEH_FILE(current_file->data));
+	winwidget_rename(w, current_filename);
+	free(current_filename);
+
 	feh_reload_image(w, 0, 0);
 	feh_add_unique_timer(cb_reload_timer, w, opt.reload);
 	return;
-- 
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