refactor: merge expander and spacer status bar widgets

src/tui/status/blank.zig

@@ -0,0 +1,49 @@
+const std = @import("std");
+const tp = @import("thespian");
+const Plane = @import("renderer").Plane;
+
+const Widget = @import("../Widget.zig");
+
+plane: Plane,
+layout: Widget.Layout,
+on_event: ?Widget.EventHandler,
+
+const Self = @This();
+
+pub fn Create(comptime layout_: Widget.Layout) @import("widget.zig").CreateFunction {
+    return struct {
+        fn create(a: std.mem.Allocator, parent: Plane, event_handler: ?Widget.EventHandler) @import("widget.zig").CreateError!Widget {
+            const self: *Self = try a.create(Self);
+            self.* = .{
+                .plane = try Plane.init(&(Widget.Box{}).opts(@typeName(Self)), parent),
+                .layout = layout_,
+                .on_event = event_handler,
+            };
+            return Widget.to(self);
+        }
+    }.create;
+}
+
+pub fn deinit(self: *Self, a: std.mem.Allocator) void {
+    self.plane.deinit();
+    a.destroy(self);
+}
+
+pub fn layout(self: *Self) Widget.Layout {
+    return self.layout;
+}
+
+pub fn render(self: *Self, theme: *const Widget.Theme) bool {
+    self.plane.set_base_style(" ", theme.statusbar);
+    self.plane.erase();
+    return false;
+}
+
+pub fn receive(self: *Self, from: tp.pid_ref, m: tp.message) error{Exit}!bool {
+    var btn: u32 = 0;
+    if (try m.match(.{ "D", tp.any, tp.extract(&btn), tp.more })) {
+        if (self.on_event) |h| h.send(from, m) catch {};
+        return true;
+    }
+    return false;
+}