rem: unnecessary signal handler

No event-based re-sizing, instead each re-render resizes by default.

src/app.zig

@@ -44,13 +44,13 @@ pub fn App(comptime E: type) type {
         const element = @import("element.zig");
         pub const Element = element.Element(Event);
         pub const Scrollable = element.Scrollable(Event);
+        pub const Exec = element.Exec(Event, Queue);
         pub const Queue = queue.Queue(Event, 256);
 
         queue: Queue,
-        thread: ?std.Thread,
+        thread: ?std.Thread = null,
         quit_event: std.Thread.ResetEvent,
         termios: ?std.posix.termios = null,
-        attached_handler: bool = false,
 
         pub const SignalHandler = struct {
             context: *anyopaque,
@@ -59,32 +59,14 @@ pub fn App(comptime E: type) type {
 
         pub const init: @This() = .{
             .queue = .{},
-            .thread = null,
             .quit_event = .{},
-            .termios = null,
-            .attached_handler = false,
         };
 
         pub fn start(this: *@This()) !void {
             if (this.thread) |_| return;
 
-            if (!this.attached_handler) {
-                var winch_act = std.posix.Sigaction{
-                    .handler = .{ .handler = @This().handleWinch },
-                    .mask = std.posix.empty_sigset,
-                    .flags = 0,
-                };
-                std.posix.sigaction(std.posix.SIG.WINCH, &winch_act, null);
-
-                try registerWinch(.{
-                    .context = this,
-                    .callback = @This().winsizeCallback,
-                });
-                this.attached_handler = true;
-
-                // post init event (as the very first element to be in the queue - event loop)
-                this.postEvent(.init);
-            }
+            // post init event (as the very first element to be in the queue - event loop)
+            this.postEvent(.init);
 
             this.quit_event.reset();
             this.thread = try std.Thread.spawn(.{}, @This().run, .{this});
@@ -139,27 +121,6 @@ pub fn App(comptime E: type) type {
             this.queue.push(e);
         }
 
-        fn winsizeCallback(ptr: *anyopaque) void {
-            const this: *@This() = @ptrCast(@alignCast(ptr));
-            _ = this;
-            // this.postEvent(.{ .size = terminal.getTerminalSize() });
-        }
-
-        var winch_handler: ?SignalHandler = null;
-
-        fn registerWinch(handler: SignalHandler) !void {
-            if (winch_handler) |_| {
-                @panic("Cannot register another WINCH handler.");
-            }
-            winch_handler = handler;
-        }
-
-        fn handleWinch(_: c_int) callconv(.C) void {
-            if (winch_handler) |handler| {
-                handler.callback(handler.context);
-            }
-        }
-
         fn run(this: *@This()) !void {
             // thread to read user inputs
             var buf: [256]u8 = undefined;