From 798ea02440c00be6851e79fa8a9a65c77fbfd8e9 Mon Sep 17 00:00:00 2001
From: Tom Schoonjans <Tom.Schoonjans@diamond.ac.uk>
Date: Sun, 23 Jul 2017 09:37:26 +0100
Subject: [PATCH] GtkFileChooserNativeQuartz: add support for Mountain Lion and
 Mavericks

https://bugzilla.gnome.org/show_bug.cgi?id=784723 introduced support for
native file chooser dialogs on macOS, but due to the use of generics in
the patch, there will be compilation errors on pre-Xcode 7 platforms,
such as Mountain Lion and Mavericks.

I strongly recommend to revert this patch when the oldest supported
macOS release is bumped to Yosemite (10.10).

https://bugzilla.gnome.org/show_bug.cgi?id=785306
---
 gtk/gtkfilechoosernativequartz.c | 16 ++++++++--------
 gtk/gtkfilefilter.c              |  4 ++--
 gtk/gtkfilefilterprivate.h       |  2 +-
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/gtk/gtkfilechoosernativequartz.c b/gtk/gtkfilechoosernativequartz.c
index dd98dcb45b..d573248210 100644
--- a/gtk/gtkfilechoosernativequartz.c
+++ b/gtk/gtkfilechoosernativequartz.c
@@ -67,8 +67,8 @@ typedef struct {
   GFile *current_file;
   char *current_name;
 
-  NSMutableArray<NSArray<NSString *> *> *filters;
-  NSMutableArray<NSString *> *filter_names;
+  NSMutableArray *filters;
+  NSMutableArray *filter_names;
   NSComboBox *filter_combo_box;
 
   GSList *files;
@@ -94,7 +94,7 @@ typedef struct {
 - (void)comboBoxSelectionDidChange:(NSNotification *)notification
 {
   NSInteger selected_index = [data->filter_combo_box indexOfSelectedItem];
-  NSArray<NSString *> *filter = [data->filters objectAtIndex:selected_index];
+  NSArray *filter = [data->filters objectAtIndex:selected_index];
   // check for empty strings in filter -> indicates all filetypes should be allowed!
   if ([filter containsObject:@""])
     [data->panel setAllowedFileTypes:nil];
@@ -400,11 +400,11 @@ strip_mnemonic (const gchar *s)
 
 static gboolean
 file_filter_to_quartz (GtkFileFilter *file_filter,
-                       NSMutableArray<NSArray<NSString *> *> *filters,
-		       NSMutableArray<NSString *> *filter_names)
+                       NSMutableArray *filters,
+		       NSMutableArray *filter_names)
 {
   const char *name;
-  NSArray<NSString *> *pattern_nsstrings;
+  NSArray *pattern_nsstrings;
 
   pattern_nsstrings = _gtk_file_filter_get_as_pattern_nsstrings (file_filter);
   if (pattern_nsstrings == NULL)
@@ -462,9 +462,9 @@ gtk_file_chooser_native_quartz_show (GtkFileChooserNative *self)
   n_filters = g_slist_length (filters);
   if (n_filters > 0)
     {
-      data->filters = [NSMutableArray<NSArray<NSString *> *> arrayWithCapacity:n_filters];
+      data->filters = [NSMutableArray arrayWithCapacity:n_filters];
       [data->filters retain];
-      data->filter_names = [NSMutableArray<NSString *> arrayWithCapacity:n_filters];
+      data->filter_names = [NSMutableArray arrayWithCapacity:n_filters];
       [data->filter_names retain];
 
       for (l = filters, i = 0; l != NULL; l = l->next, i++)
diff --git a/gtk/gtkfilefilter.c b/gtk/gtkfilefilter.c
index e45406c9e7..cd19fb688c 100644
--- a/gtk/gtkfilefilter.c
+++ b/gtk/gtkfilefilter.c
@@ -596,9 +596,9 @@ gtk_file_filter_get_needed (GtkFileFilter *filter)
 
 #import <Foundation/Foundation.h>
 
-NSArray<NSString *> * _gtk_file_filter_get_as_pattern_nsstrings (GtkFileFilter *filter)
+NSArray * _gtk_file_filter_get_as_pattern_nsstrings (GtkFileFilter *filter)
 {
-  NSMutableArray<NSString *> *array = [[NSMutableArray alloc] init];
+  NSMutableArray *array = [[NSMutableArray alloc] init];
   GSList *tmp_list;
 
   for (tmp_list = filter->rules; tmp_list; tmp_list = tmp_list->next)
diff --git a/gtk/gtkfilefilterprivate.h b/gtk/gtkfilefilterprivate.h
index ce8a715fea..340caf80e7 100644
--- a/gtk/gtkfilefilterprivate.h
+++ b/gtk/gtkfilefilterprivate.h
@@ -31,7 +31,7 @@ G_BEGIN_DECLS
 char ** _gtk_file_filter_get_as_patterns (GtkFileFilter      *filter);
 
 #ifdef GDK_WINDOWING_QUARTZ
-NSArray<NSString *> * _gtk_file_filter_get_as_pattern_nsstrings (GtkFileFilter *filter);
+NSArray * _gtk_file_filter_get_as_pattern_nsstrings (GtkFileFilter *filter);
 #endif