blob: 684b84032408d4560ad8c316e26787f1a07361ad (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
#pragma once
#include "Control.h"
#include <cassert>
namespace cru::ui::controls {
template <typename TRenderObject>
class SingleChildControl : public Control {
protected:
SingleChildControl(std::string name) : Control(std::move(name)) {
container_render_object_.SetAttachedControl(this);
}
public:
Control* GetChild() {
const auto& children = GetChildren();
assert(children.empty() || children.size() == 1);
return children.empty() ? nullptr : children.front();
}
void SetChild(Control* child) {
auto old_child = GetChild();
if (old_child == child) return;
if (old_child) {
RemoveChildAt(0);
}
if (child) {
InsertChildAt(child, 0);
}
container_render_object_.SetChild(child ? child->GetRenderObject()
: nullptr);
}
render::RenderObject* GetRenderObject() override {
return &container_render_object_;
}
TRenderObject* GetContainerRenderObject() {
return &container_render_object_;
}
private:
TRenderObject container_render_object_;
};
} // namespace cru::ui::controls
|
