feat(io): introduce std.Io parameter for App.init

The provided `std.Io` is used for running the input reading and the
rendering asynch. The user can provide their desired `std.Io`
implementation as they wish to use. The examples use `std.Io.Threaded`
as a simple threaded solution.

examples/continuous.zig

@@ -133,7 +133,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/demo.zig

@@ -31,8 +31,10 @@ pub fn main() !void {
     defer if (gpa.deinit() == .leak) log.err("memory leak", .{});
 
     const allocator = gpa.allocator();
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
 
-    var app: App = .init(.{});
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/elements/alignment.zig

@@ -32,7 +32,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/elements/button.zig

@@ -82,7 +82,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/elements/input.zig

@@ -65,7 +65,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/elements/progress.zig

@@ -32,7 +32,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/elements/radio-button.zig

@@ -32,7 +32,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/elements/scrollable.zig

@@ -65,7 +65,10 @@ pub fn main() !void {
     }
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/elements/selection.zig

@@ -32,7 +32,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/errors.zig

@@ -97,7 +97,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/layouts/grid.zig

@@ -35,7 +35,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/layouts/horizontal.zig

@@ -35,7 +35,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/layouts/mixed.zig

@@ -35,7 +35,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/layouts/vertical.zig

@@ -35,7 +35,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/styles/palette.zig

@@ -32,7 +32,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();
 

examples/styles/text.zig

@@ -178,7 +178,10 @@ pub fn main() !void {
 
     const allocator = gpa.allocator();
 
-    var app: App = .init(.{});
+    var threaded_io: std.Io.Threaded = .init(allocator);
+    defer threaded_io.deinit();
+
+    var app: App = .init(threaded_io.ioBasic(), .{});
     var renderer = zterm.Renderer.Buffered.init(allocator);
     defer renderer.deinit();