-
-
Notifications
You must be signed in to change notification settings - Fork 1
/
Js.scala
139 lines (118 loc) · 4 KB
/
Js.scala
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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
package japgolly.webapputil.entrypoint
import japgolly.microlibs.stdlib_ext.EscapeUtils
import japgolly.univeq.UnivEq
import japgolly.webapputil.binary.BinaryData
import java.lang.{StringBuilder => JStringBuilder}
final case class Js(val asString: String) extends AnyVal {
import Js.Const._
@inline def toHtmlScriptTag: Html =
scriptInlineBase64
/** Create a script tag to execute this JS.
*
* Example:
* {{{
* <script type="text/javascript" src="data:application/javascript;base64,Y29uc29sZS5sb2coJzwvc2NyaXB0Picp"></script>
* }}}
*/
def scriptInlineBase64: Html =
Html(
"""<script type="text/javascript" src="data:application/javascript;base64,""" +
BinaryData.fromStringAsUtf8(asString).toBase64 +
""""></script>"""
)
/** Create a script tag to execute this JS.
*
* Example:
* {{{
* <script type="text/javascript" src="data:application/javascript,var%20x%20=%20'%3C/script%3E';%20alert(x)"></script>
* }}}
*/
def scriptInlineEscaped: Html = {
val before = """<script type="text/javascript" src="data:application/javascript,"""
val after = """"></script>"""
val sb = new JStringBuilder(before.length + asStringEscapedSize + after.length)
sb.append(before)
EscapeUtils.htmlAppendEscaped(sb, asString)
sb.append(after)
Html(sb.toString)
}
/** Create a script tag with this JS as the onload attribute.
*
* Example:
* {{{
* <script type="text/javascript" src="//blah.js" onload="XX.m("hello")"></script>
* }}}
*/
def scriptOnLoad(url : String,
async : Boolean = false,
defer : Boolean = false,
integrity : String = null,
crossorigin: String = null,
): Html = {
var sbSize =
tagStart.length +
tagSrc.length +
tagSrcLoad.length +
tagEndEnd.length +
url.length +
asStringEscapedSize
if (async) sbSize += tagAsync.length
if (defer) sbSize += tagDefer.length
if (integrity != null) sbSize += tagIntegrity1.length + tagIntegrity2.length + integrity.length
if (crossorigin != null) sbSize += tagCrossorigin1.length + tagCrossorigin2.length + crossorigin.length
val sb = new JStringBuilder(sbSize)
sb.append(tagStart)
if (async)
sb.append(tagAsync)
if (defer)
sb.append(tagDefer)
if (integrity != null) {
sb.append(tagIntegrity1)
sb.append(integrity)
sb.append(tagIntegrity2)
}
if (crossorigin != null) {
sb.append(tagCrossorigin1)
sb.append(crossorigin)
sb.append(tagCrossorigin2)
}
sb.append(tagSrc)
sb.append(url)
sb.append(tagSrcLoad)
EscapeUtils.htmlAppendEscaped(sb, asString)
sb.append(tagEndEnd)
Html(sb.toString)
}
@inline private def asStringEscapedSize =
// add an extra 10 + (50% of JS size) for HTML escaping
asString.length + (asString.length >> 1) + 10
}
object Js {
private[Js] object Const {
final val tagStart = "<script type=\"text/javascript\""
final val tagAsync = " async=\"async\""
final val tagDefer = " defer=\"defer\""
final val tagIntegrity1 = " integrity=\""
final val tagIntegrity2 = "\""
final val tagCrossorigin1 = " crossorigin=\""
final val tagCrossorigin2 = "\""
final val tagSrc = " src=\""
final val tagSrcLoad = "\" onload=\""
final val tagEndEnd = "\"></script>"
}
implicit def univEq: UnivEq[Js] =
UnivEq.derive
final case class Wrapper(before: String, after: String) {
val totalLength = before.length + after.length
def around(inside: Wrapper): Wrapper =
Wrapper(
before = this.before + inside.before,
after = inside.after + this.after,
)
def inside(outer: Wrapper): Wrapper =
outer.around(this)
}
object Wrapper {
val windowOnLoad = Wrapper("window.onload=function(){", "};") // why'd I add a semi-colon here again? Can't remember...
}
}