actions.scheduling source code

1 module actions.scheduling;
2 
3 import fluid;
4 
5 @safe:
6 
7 class CountNodesAction : TreeAction {
8 
9     int runs;
10     int nodesDrawn;
11 
12     override void beforeTree(Node, Rectangle) {
13         runs++;
14         nodesDrawn = 0;
15     }
16 
17     override void beforeDraw(Node, Rectangle) {
18         nodesDrawn++;
19     }
20 
21 }
22 
23 @("Actions can be scheduled using the new system")
24 unittest {
25 
26     auto root = vspace(
27         vspace(),
28         vspace(),
29     );
30     auto action = new CountNodesAction;
31 
32     root.startAction(action);
33     root.draw();
34     assert(action.nodesDrawn == 3);
35 
36 }
37 
38 @("TreeAction.stop will stop the action from running")
39 unittest {
40 
41     auto action = new CountNodesAction;
42     auto root = vspace();
43 
44     root.startAction(action);
45     root.draw();
46     assert(action.runs == 1);
47     root.draw();
48     assert(action.runs == 1);
49 
50 }
51 
52 @("TreeActions are reusable")
53 unittest {
54 
55     auto action = new CountNodesAction;
56     auto root = vspace();
57 
58     root.startAction(action);
59     root.draw();
60     assert(action.runs == 1);
61 
62     root.startAction(action);
63     root.draw();
64     assert(action.runs == 2);
65 
66     root.startAction(action);
67     root.draw();
68     assert(action.runs == 3);
69 
70 }
71 
72 @("TreeActions can be chained")
73 unittest {
74 
75     IntInput input;
76     ScrollFrame scrollFrame;
77     Space innerSpace;
78 
79     auto root = testSpace(
80         scrollFrame = vscrollFrame(
81             vspace(),
82             innerSpace = vspace(
83                 input = intInput(),
84             ),
85         ),
86     );
87 
88     const frames = root.focusChild()
89         .then((Node a) @trusted => assert(a == scrollFrame.scrollBar))
90         .then(() => scrollFrame.focusChild())
91         .then((Node a) @trusted => assert(a == scrollFrame.scrollBar))
92         .then(() => innerSpace.focusChild())
93         .then((Node a) @trusted => assert(a == input))
94         .runWhileDrawing(root);
95 
96     assert(frames == 3);
97 
98 }