# HG changeset patch
# User bsmith@81767d24-ef19-dc11-ae90-00e081727c95
# Date 1628805251 0
# Node ID b7cc83cf70fa163829e0f93b845212b7de0f05e0
# Parent  22105f99dd6a5f6b6bfc43b0a8ba2ba39406a05c
iOS: Attempt to add "Back" button to secondaries windows to allow them to
close.  Also remove windowShouldClose() since it is Mac specific... instead
handle the close event in our Back button handler.
Code builds, but Back button is not showing up, but I wanted to commit.

diff -r 22105f99dd6a -r b7cc83cf70fa ios/dw.m
--- a/ios/dw.m	Wed Aug 11 23:24:06 2021 +0000
+++ b/ios/dw.m	Thu Aug 12 21:54:11 2021 +0000
@@ -239,6 +239,7 @@
 static char _dw_app_id[_DW_APP_ID_SIZE+1]= {0};
 static int _dw_dark_mode_state = DW_FEATURE_UNSUPPORTED;
 static CGPoint _dw_event_point = {0};
+static NSMutableArray *_dw_toplevel_windows;
 
 /* Create a default colors for a thread */
 void _dw_init_colors(void)
@@ -790,6 +791,11 @@
 -(void)setPopupMenu:(DWMenu *)input { [popupmenu release]; popupmenu = input; [popupmenu retain]; }
 -(DWMenu *)menu { return windowmenu; }
 -(DWMenu *)popupMenu { return popupmenu; }
+-(void)closeWindow:(id)sender
+{
+    if(_dw_event_handler(self, nil, _DW_EVENT_DELETE) < 1)
+        dw_window_destroy(self);
+}
 -(void)dealloc
 {
     if(windowmenu)
@@ -1343,19 +1349,12 @@
 {
     CGSize oldsize;
 }
--(BOOL)windowShouldClose:(id)sender;
 -(void)windowDidBecomeMain:(id)sender;
 -(void)menuHandler:(id)sender;
 -(UIResponder *)nextResponder;
 @end
 
 @implementation DWView
--(BOOL)windowShouldClose:(id)sender
-{
-    if(_dw_event_handler(sender, nil, _DW_EVENT_DELETE) > 0)
-        return NO;
-    return YES;
-}
 -(void)willMoveToSuperview:(UIView *)newSuperview
 {
     if(newSuperview)
@@ -8064,6 +8063,7 @@
     [window setRootViewController:[[DWViewController alloc] init]];
     [window setBackgroundColor:[UIColor systemBackgroundColor]];
     [[[window rootViewController] view] addSubview:view];
+    [_dw_toplevel_windows addObject:window];
 
     /* Handle style flags... There is no visible frame...
      * On iOS 13 and higher if a titlebar is requested create a navigation bar.
@@ -8077,6 +8077,18 @@
             UINavigationBar* navbar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, sbheight, screenrect.size.width, 40)];
             UINavigationItem* navItem = [[UINavigationItem alloc] initWithTitle:nstitle];
 
+            /* We maintain a list of top-level windows...
+             * If there is more than one window, add a Back button that will close it.
+             */
+            if([_dw_toplevel_windows count] > 1)
+            {
+                UIBarButtonItem *back = [[UIBarButtonItem alloc] initWithTitle:@"Back"
+                                                                         style:UIBarButtonItemStylePlain
+                                                                        target:window
+                                                                        action:@selector(closeWindow:)];
+
+                navItem.backBarButtonItem = back;
+            }
             [navbar setItems:@[navItem]];
             [[[window rootViewController] view] addSubview:navbar];
         }
@@ -8525,9 +8537,11 @@
     int retval = 0;
 
     /* Handle destroying a top-level window */
-    if([ object isKindOfClass:[ UIWindow class ] ])
+    if([object isKindOfClass:[UIWindow class]])
     {
         DWWindow *window = handle;
+        [_dw_toplevel_windows removeObject:window];
+        [window removeFromSuperview];
         [window release];
     }
     /* Handle removing menu items from menus */
@@ -10541,6 +10555,7 @@
     _dw_app_init();
     pthread_key_create(&_dw_pool_key, NULL);
     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+    _dw_toplevel_windows = [[NSMutableArray new] retain];
     pthread_setspecific(_dw_pool_key, pool);
     pthread_key_create(&_dw_fg_color_key, NULL);
     pthread_key_create(&_dw_bg_color_key, NULL);