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
|
/*
* Copyright (c) 2017-present Robert Jaros
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package pl.treksoft.kvision.panel
import com.github.snabbdom.VNode
import pl.treksoft.kvision.core.Component
import pl.treksoft.kvision.core.Container
import pl.treksoft.kvision.routing.routing
/**
* The container with only one active (visible) child at any moment.
*
* It supports activating children by a JavaScript route.
*
* @constructor
* @param activateLast determines if added component is automatically activated (default true)
* @param classes a set of CSS class names
* @param init an initializer extension function
*/
open class StackPanel(
private val activateLast: Boolean = true,
classes: Set<String> = setOf(), init: (StackPanel.() -> Unit)? = null
) : SimplePanel(classes) {
/**
* The index of active (visible) child.
*/
var activeIndex by refreshOnUpdate(-1)
/**
* The active (visible) child.
*/
var activeChild
get() = children[activeIndex]
set(value) {
activeIndex = children.indexOf(value)
}
internal val childrenMap = mutableMapOf<Int, Component>()
init {
@Suppress("LeakingThis")
init?.invoke(this)
}
override fun childrenVNodes(): Array<VNode> {
return if (activeIndex in children.indices) {
arrayOf(children[activeIndex].renderVNode())
} else {
arrayOf()
}
}
/**
* Adds given component and bounds it's activation to a given route.
* @param panel child component
* @param route JavaScript route to activate given child
* @return current container
*/
open fun add(panel: Component, route: String): StackPanel {
add(panel)
val currentIndex = counter++
childrenMap[currentIndex] = panel
routing.on(route, { _ ->
activeChild = childrenMap[currentIndex]!!
}).resolve()
return this
}
override fun add(child: Component): StackPanel {
super.add(child)
if (activateLast) activeIndex = children.size - 1
else if (activeIndex == -1) activeIndex = 0
return this
}
override fun addAll(children: List<Component>): StackPanel {
super.addAll(children)
if (activateLast) activeIndex = this.children.size - 1
else if (activeIndex == -1) activeIndex = 0
return this
}
override fun remove(child: Component): StackPanel {
super.remove(child)
childrenMap.filter { it.value == child }.keys.firstOrNull()?.let {
childrenMap.remove(it)
}
if (activeIndex > children.size - 1) activeIndex = children.size - 1
return this
}
override fun removeAll(): StackPanel {
super.removeAll()
childrenMap.clear()
if (activeIndex > children.size - 1) activeIndex = children.size - 1
return this
}
companion object {
internal var counter = 0
/**
* DSL builder extension function.
*
* It takes the same parameters as the constructor of the built component.
*/
fun Container.stackPanel(
activateLast: Boolean = true, classes: Set<String> = setOf(), init: (StackPanel.() -> Unit)? = null
): StackPanel {
val stackPanel = StackPanel(activateLast, classes, init)
this.add(stackPanel)
return stackPanel
}
}
}
|
