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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
WI.StepsTimingFunction = class StepsTimingFunction
{
constructor(type, count)
{
console.assert(Object.values(WI.StepsTimingFunction.Type).includes(type), type);
console.assert(count > 0, count);
this._type = type;
this._count = count;
}
// Static
static fromString(text)
{
if (!text?.length)
return null;
let trimmedText = text.toLowerCase().replace(/\s/g, "");
if (!trimmedText.length)
return null;
let keywordValue = WI.StepsTimingFunction.keywordValues[trimmedText];
if (keywordValue)
return new WI.StepsTimingFunction(...keywordValue);
let matches = trimmedText.match(/^steps\((\d+)(?:,([a-z-]+))?\)$/);
if (!matches)
return null;
let type = matches[2] || WI.StepsTimingFunction.Type.JumpEnd;
if (Object.values(WI.StepsTimingFunction).includes(type))
return null;
let count = Number(matches[1]);
if (isNaN(count) || count <= 0)
return null;
return new WI.StepsTimingFunction(type, count);
}
// Public
get type() { return this._type; }
get count() { return this._count; }
copy()
{
return new WI.StepsTimingFunction(this._type, this._count);
}
toString()
{
if (this._type === WI.StepsTimingFunction.Type.JumpStart && this._count === 1)
return "step-start";
if (this._type === WI.StepsTimingFunction.Type.JumpEnd && this._count === 1)
return "step-end";
return `steps(${this._count}, ${this._type})`;
}
};
WI.StepsTimingFunction.Type = {
JumpStart: "jump-start",
JumpEnd: "jump-end",
JumpNone: "jump-none",
JumpBoth: "jump-both",
Start: "start",
End: "end",
};
WI.StepsTimingFunction.keywordValues = {
"step-start": [WI.StepsTimingFunction.Type.JumpStart, 1],
"step-end": [WI.StepsTimingFunction.Type.JumpEnd, 1],
};
|
