mod: use unbuffered streaming writer for TUIs

examples/errors.zig

@@ -57,7 +57,7 @@ const ErrorNotification = struct {
         return .{ .ptr = this, .vtable = &.{ .handle = handle, .content = content } };
     }
 
-    fn handle(ctx: *anyopaque, _: *App.Model, event: App.Event) !void {
+    fn handle(ctx: *anyopaque, _: std.Io, _: *App.Model, event: App.Event) !void {
         const this: *@This() = @ptrCast(@alignCast(ctx));
         switch (event) {
             .key => |key| if (!key.isAscii()) return zterm.Error.TooSmall,
@@ -119,21 +119,21 @@ pub fn main(init: std.process.Init) !void {
     try container.append(try App.Container.init(allocator, .{}, info_text.element()));
     try container.append(try App.Container.init(allocator, .{}, error_notification.element()));
 
-    try app.start(.full);
-    defer app.stop() catch |err| log.err("Failed to stop application: {any}", .{err});
+    try app.start(.full, w);
+    defer app.stop(w) catch |err| log.err("Failed to stop application: {any}", .{err});
 
     while (true) {
-        const event = app.nextEvent();
+        const event = try app.nextEvent();
         log.debug("received event: {s}", .{@tagName(event)});
 
         // pre event handling
         switch (event) {
-            .key => |key| if (key.eql(.{ .cp = 'c', .mod = .{ .ctrl = true } })) app.quit(),
+            .key => |key| if (key.eql(.{ .cp = 'c', .mod = .{ .ctrl = true } })) try app.quit(),
             .err => |err| log.err("Received {s} with message: {s}", .{ @errorName(err.err), err.msg }),
             else => {},
         }
 
-        container.handle(&app.model, event) catch |err| app.postEvent(.{
+        container.handle(io, &app.model, event) catch |err| try app.postEvent(.{
             .err = .{
                 .err = err,
                 .msg = "Container Event handling failed",
@@ -146,10 +146,10 @@ pub fn main(init: std.process.Init) !void {
             else => {},
         }
 
-        container.resize(&app.model, try renderer.resize());
+        container.resize(&app.model, try renderer.resize(w));
         container.reposition(&app.model, .{});
         try renderer.render(@TypeOf(container), &container, App.Model, &app.model);
-        try renderer.flush();
+        try renderer.flush(w);
     }
 }