nodes.node_slot source code

1 module nodes.node_slot;
2 
3 import fluid;
4 
5 @safe:
6 
7 @("NodeSlot can be empty")
8 unittest {
9 
10     auto slot = nodeSlot!Node();
11     auto root = testSpace(nullTheme, slot);
12 
13     assert(slot.value is null);
14 
15     root.drawAndAssert(
16         slot.doesNotDrawChildren(),
17     );
18 
19 }
20 
21 @("NodeSlot can carry a child")
22 unittest {
23 
24     auto content = label("Hello, World!");
25     auto slot = nodeSlot!Label(content);
26     auto root = testSpace(nullTheme, slot);
27 
28     root.drawAndAssert(
29         content.draws(),
30     );
31     root.drawAndAssert(
32         slot.drawsChild(content),
33     );
34 
35 }
36 
37 @("NodeSlot can change content")
38 unittest {
39 
40     auto slot1 = nodeSlot!Label(label("Hello, "));
41     auto slot2 = nodeSlot!Label();
42     auto root = testSpace(nullTheme, slot1, slot2);
43 
44     root.drawAndAssert(
45         slot1.drawsChild(slot1.value),
46         slot2.doesNotDrawChildren(),
47     );
48 
49     slot2 = label("World!");
50 
51     auto value1 = slot1.value;
52     auto value2 = slot2.value;
53 
54     root.drawAndAssert(
55         slot1.drawsChild(value1),
56         slot2.drawsChild(value2),
57     );
58 
59     slot1.swapSlots(slot2);
60 
61     root.drawAndAssert(
62         slot1.drawsChild(value2),
63         slot2.drawsChild(value1),
64     );
65 
66 }
67 
68 @("NodeSlot content can be cleared")
69 unittest {
70 
71     auto slot = nodeSlot!Label(label("Woo!"));
72     auto root = testSpace(slot);
73 
74     root.drawAndAssert(
75         slot.drawsChild(slot.value),
76     );
77 
78     slot.clear();
79 
80     root.drawAndAssert(
81         slot.doesNotDrawChildren(),
82     );
83 
84 }