Split UI code into ly-ui library

Signed-off-by: AnErrupTion <anerruption@disroot.org>
2026-05-06 23:30:37 +00:00 · 2026-03-17 21:44:33 +01:00
parent 93696a6b30
commit 64539f4342
34 changed files with 159 additions and 97 deletions
--- a/ly-ui/src/Widget.zig
+++ b/ly-ui/src/Widget.zig
@@ -0,0 +1,180 @@
+const Widget = @This();
+
+const keyboard = @import("keyboard.zig");
+const TerminalBuffer = @import("TerminalBuffer.zig");
+
+const VTable = struct {
+    deinit_fn: ?*const fn (ptr: *anyopaque) void,
+    realloc_fn: ?*const fn (ptr: *anyopaque) anyerror!void,
+    draw_fn: *const fn (ptr: *anyopaque) void,
+    update_fn: ?*const fn (ptr: *anyopaque, ctx: *anyopaque) anyerror!void,
+    handle_fn: ?*const fn (ptr: *anyopaque, maybe_key: ?keyboard.Key, insert_mode: bool) anyerror!void,
+    calculate_timeout_fn: ?*const fn (ptr: *anyopaque, ctx: *anyopaque) anyerror!?usize,
+};
+
+id: u64,
+display_name: []const u8,
+pointer: *anyopaque,
+vtable: VTable,
+
+pub fn init(
+    display_name: []const u8,
+    pointer: anytype,
+    comptime deinit_fn: ?fn (ptr: @TypeOf(pointer)) void,
+    comptime realloc_fn: ?fn (ptr: @TypeOf(pointer)) anyerror!void,
+    comptime draw_fn: fn (ptr: @TypeOf(pointer)) void,
+    comptime update_fn: ?fn (ptr: @TypeOf(pointer), ctx: *anyopaque) anyerror!void,
+    comptime handle_fn: ?fn (ptr: @TypeOf(pointer), maybe_key: ?keyboard.Key, insert_mode: bool) anyerror!void,
+    comptime calculate_timeout_fn: ?fn (ptr: @TypeOf(pointer), ctx: *anyopaque) anyerror!?usize,
+) Widget {
+    const Pointer = @TypeOf(pointer);
+    const Impl = struct {
+        pub fn deinitImpl(ptr: *anyopaque) void {
+            const impl: Pointer = @ptrCast(@alignCast(ptr));
+
+            return @call(
+                .always_inline,
+                deinit_fn.?,
+                .{impl},
+            );
+        }
+
+        pub fn reallocImpl(ptr: *anyopaque) !void {
+            const impl: Pointer = @ptrCast(@alignCast(ptr));
+
+            return @call(
+                .always_inline,
+                realloc_fn.?,
+                .{impl},
+            );
+        }
+
+        pub fn drawImpl(ptr: *anyopaque) void {
+            const impl: Pointer = @ptrCast(@alignCast(ptr));
+
+            return @call(
+                .always_inline,
+                draw_fn,
+                .{impl},
+            );
+        }
+
+        pub fn updateImpl(ptr: *anyopaque, ctx: *anyopaque) !void {
+            const impl: Pointer = @ptrCast(@alignCast(ptr));
+
+            return @call(
+                .always_inline,
+                update_fn.?,
+                .{ impl, ctx },
+            );
+        }
+
+        pub fn handleImpl(ptr: *anyopaque, maybe_key: ?keyboard.Key, insert_mode: bool) !void {
+            const impl: Pointer = @ptrCast(@alignCast(ptr));
+
+            return @call(
+                .always_inline,
+                handle_fn.?,
+                .{ impl, maybe_key, insert_mode },
+            );
+        }
+
+        pub fn calculateTimeoutImpl(ptr: *anyopaque, ctx: *anyopaque) !?usize {
+            const impl: Pointer = @ptrCast(@alignCast(ptr));
+
+            return @call(
+                .always_inline,
+                calculate_timeout_fn.?,
+                .{ impl, ctx },
+            );
+        }
+
+        const vtable = VTable{
+            .deinit_fn = if (deinit_fn != null) deinitImpl else null,
+            .realloc_fn = if (realloc_fn != null) reallocImpl else null,
+            .draw_fn = drawImpl,
+            .update_fn = if (update_fn != null) updateImpl else null,
+            .handle_fn = if (handle_fn != null) handleImpl else null,
+            .calculate_timeout_fn = if (calculate_timeout_fn != null) calculateTimeoutImpl else null,
+        };
+    };
+
+    return .{
+        .id = @intFromPtr(Impl.vtable.draw_fn),
+        .display_name = display_name,
+        .pointer = pointer,
+        .vtable = Impl.vtable,
+    };
+}
+
+pub fn deinit(self: *Widget) void {
+    const impl: @TypeOf(self.pointer) = @ptrCast(@alignCast(self.pointer));
+
+    if (self.vtable.deinit_fn) |deinit_fn| {
+        return @call(
+            .auto,
+            deinit_fn,
+            .{impl},
+        );
+    }
+}
+
+pub fn realloc(self: *Widget) !void {
+    const impl: @TypeOf(self.pointer) = @ptrCast(@alignCast(self.pointer));
+
+    if (self.vtable.realloc_fn) |realloc_fn| {
+        return @call(
+            .auto,
+            realloc_fn,
+            .{impl},
+        );
+    }
+}
+
+pub fn draw(self: *Widget) void {
+    const impl: @TypeOf(self.pointer) = @ptrCast(@alignCast(self.pointer));
+
+    @call(
+        .auto,
+        self.vtable.draw_fn,
+        .{impl},
+    );
+}
+
+pub fn update(self: *Widget, ctx: *anyopaque) !void {
+    const impl: @TypeOf(self.pointer) = @ptrCast(@alignCast(self.pointer));
+
+    if (self.vtable.update_fn) |update_fn| {
+        return @call(
+            .auto,
+            update_fn,
+            .{ impl, ctx },
+        );
+    }
+}
+
+pub fn handle(self: *Widget, maybe_key: ?keyboard.Key, insert_mode: bool) !void {
+    const impl: @TypeOf(self.pointer) = @ptrCast(@alignCast(self.pointer));
+
+    if (self.vtable.handle_fn) |handle_fn| {
+        return @call(
+            .auto,
+            handle_fn,
+            .{ impl, maybe_key, insert_mode },
+        );
+    }
+}
+
+pub fn calculateTimeout(self: *Widget, ctx: *anyopaque) !?usize {
+    const impl: @TypeOf(self.pointer) = @ptrCast(@alignCast(self.pointer));
+
+    if (self.vtable.calculate_timeout_fn) |calculate_timeout_fn| {
+        return @call(
+            .auto,
+            calculate_timeout_fn,
+            .{ impl, ctx },
+        );
+    }
+
+    return null;
+}