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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
# KVision
Object oriented Web UI framework for Kotlin/JS.
KVision allows you to build user interface of modern web applications with the [Kotlin](https://kotlinlang.org) language.
It's designed to be object oriented in the "most classical" sense - it gives you a hierarchy of many different components,
which are used to build application UI.
Unlike most of the popular web UI frameworks (AngularJS, React, Vue.js and others),
KVision is not declarative - it is not designed to mix HTML code (or pseudo code) with a typical
programming language like JavaScript. In KVision everything is just written in Kotlin, and your code can be reused not by creating any templates,
but by using well known OOP design patterns - composition and inheritance.
This design is quite similar to many non-web UI programming libraries including Swing (Java), QT (C++) and WinForms (C#).
**KVision is a new project in a development phase. Please create an issue for any bugs or feature requests.**
## Features
- 100% type safe and fully compiled dev environment.
- Type safe DSL builders.
- Based on [Bootstrap](https://getbootstrap.com/) styles, typography and components.
- Utilizes [Snabbdom](https://github.com/snabbdom/snabbdom) fast virtual DOM implementation.
- Integrates with libraries and components from [Font awesome](https://fontawesome.com/), [Bootstrap Select](https://github.com/silviomoreto/bootstrap-select) (with [AJAX](https://github.com/truckingsim/Ajax-Bootstrap-Select) extension),
[Awesome Bootstrap Checkbox](https://github.com/flatlogic/awesome-bootstrap-checkbox), [Trix editor](https://trix-editor.org/), [Bootstrap Datetime picker](https://github.com/AuspeXeu/bootstrap-datetimepicker),
[Bootstrap touchspin](https://github.com/istvan-ujjmeszaros/bootstrap-touchspin) and [Navigo](https://github.com/krasimir/navigo).
- Includes sophisticated layout containers, including CSS flexbox, CSS grid and Bootstrap responsive 12 columns grid.
- Includes convenient forms implementation, with support for many different input components and easy to use validation.
- Data binding support for [observable](https://github.com/rjaros/kotlin-observable-js) data model.
- Easy to use Drag & Drop support.
- Ready to explore [KVision examples](https://github.com/rjaros/kvision-examples) are available,
built with [Gradle](https://gradle.org/) and supporting Webpack's [Hot Module Replacement (HMR)](https://webpack.js.org/concepts/hot-module-replacement/) and
[Kotlin JavaScript DCE (dead code elimination)](https://kotlinlang.org/docs/reference/javascript-dce.html).
- [Karma](https://karma-runner.github.io/) testing framework support.
- IDE support (IntelliJ IDEA Community Edition).
## Getting started
#### Development
1. Download [KVision examples](https://github.com/rjaros/kvision-examples) from GitHub:
git clone https://github.com/rjaros/kvision-examples.git
2. Enter one of the examples directory:
cd kvision-examples/showcase (on Linux)
cd kvision-examples\showcase (on Windows)
3. Run Gradle incremental build with:
./gradlew -t run (on Linux)
gradlew.bat -t run (on Windows)
4. Open [http://localhost:8088/](http://localhost:8088/) in your browser.
5. Play with the code and see your changes immediately in the browser.
#### Production
To build complete application optimized for production run:
./gradlew -Pprod=true distZip (on Linux)
gradlew.bat -Pprod=true distZip (on Windows)
Application package will be saved as build/distributions/showcase.zip.
## Usage samples
### Hello world
val root = Root("root")
val label = Label("Hello world!")
root.add(label)
### Basic components interactions
##### Simple, explicit way
val root = Root("root")
val panel = HPanel(spacing = 20, alignItems = FLEXALIGNITEMS.CENTER)
val label = Label("Not yet clicked.")
panel.add(label)
var count = 0
val button = Button("Click me")
button.onClick {
count++
label.text = "You clicked the button $count times."
}
panel.add(button)
root.add(panel)
##### Using Kotlin language features
Root("root").add(
HPanel(spacing = 20, alignItems = FLEXALIGNITEMS.CENTER).apply {
val label = Label("Not yet clicked.").also { add(it) }
var count = 0
add(Button("Click me").onClick {
label.text = "You clicked the button ${++count} times."
})
}
)
##### Using type safe DSL builders
Root("root") {
hPanel(spacing = 20, alignItems = FLEXALIGNITEMS.CENTER) {
val label = label("Not yet clicked.")
var count = 0
button("Click me") {
onClick {
label.text = "You clicked the button ${++count} times."
}
}
}
}
### Tab panel with JavaScript routing
val firstPanel = Tag(TAG.DIV, "First")
val secondPanel = Tag(TAG.DIV, "Second")
val thirdPanel = Tag(TAG.DIV, "Third")
Root("root").add(TabPanel().apply {
addTab("First", firstPanel, route = "/first")
addTab("Second", secondPanel, route = "/second")
addTab("Third", thirdPanel, route = "/third")
})
### Type safe forms
data class Model(val username: String?, val password: String?)
Root("root").add(FormPanel {
Model(it.string("username"), it.string("password"))
}.apply {
add("username", Text(label = "Username"), required = true)
add("password", Password(label = "Password"), required = true)
add(Button("OK").onClick {
val data: Data = this@apply.getData()
println("Username: ${data.username}")
println("Password: ${data.password}")
})
})
### Data binding with observable data model
class Data(text: String) : BaseDataComponent() {
var text: String by obs(text)
}
val model = observableListOf(
Data("One"),
Data("Two"),
Data("Three")
)
Root("root").add(DataContainer(model, { index ->
Label(model[index].text)
}, child = HPanel(spacing = 10, wrap = FLEXWRAP.WRAP)))
launch { // Kotlin coroutines
while (true) {
delay(1000)
model.reverse()
}
}
## API documentation
Full API documentation is available at [https://rjaros.github.io/kvision/api/](https://rjaros.github.io/kvision/api/).
|
