我的应用程序需要允许添加到listview。我已经弄清楚如何使用observableArrayList
动态添加到列表视图中。如果单击该按钮,项目将添加到列表中并显示。
现在我正在努力添加点击处理程序(我想处理当有人点击列表视图中的任何项目时发生的事件)。我在哪里这样做?
这是我的代码。
package someapp
import javafx.collections.FXCollections
import javafx.geometry.Pos
import javafx.scene.layout.VBox
import javafx.scene.text.FontWeight
import tornadofx.*
class MyApp : App(HelloWorld::class) {
}
class HelloWorld : View() {
val leftSide: LeftSide by inject()
override val root = borderpane {
left = leftSide.root
}
}
class LeftSide: View() {
var requestView: RequestView by singleAssign()
override val root = VBox()
init {
with(root) {
requestView = RequestView()
this += requestView
this += button("Add Item") {
action {
requestView.responses.add( Request( "example.com",
"/foo/bar",
"{ \"foo\" : \"bar\"}".toByteArray()))
}
}
}
}
}
class RequestView : View() {
val responses = FXCollections.observableArrayList<Request>(
)
override val root = listview(responses) {
cellFormat {
graphic = cache {
form {
fieldset {
label(it.hostname) {
alignment = Pos.CENTER_RIGHT
style {
fontSize = 22.px
fontWeight = FontWeight.BOLD
}
}
field("Path") {
label(it.path)
}
}
}
}
}
}
}
class Request(val hostname: String, val path: String, val body: ByteArray) {
}
答案 0 :(得分:2)
要在选择ListView中的项目时配置回调,请使用onUserSelect
回调:
onUserSelect {
information("You selected $it")
}
您也可以选择传递构成select的点击次数,默认值为2:
onUserSelect(1) {
information("You selected $it")
}
您在代码中使用了一些过时的构造,这里是一个转换为最佳实践的更新版本:)
class MyApp : App(HelloWorld::class)
class HelloWorld : View() {
override val root = borderpane {
left(LeftSide::class)
}
}
class LeftSide : View() {
val requestView: RequestView by inject()
override val root = vbox {
add(requestView)
button("Add Item").action {
requestView.responses.add(Request("example.com",
"/foo/bar",
"""{ "foo" : "bar"}""".toByteArray()))
}
}
}
class RequestView : View() {
val responses = FXCollections.observableArrayList<Request>()
override val root = listview(responses) {
cellFormat {
graphic = cache {
form {
fieldset {
label(it.hostname) {
alignment = Pos.CENTER_RIGHT
style {
fontSize = 22.px
fontWeight = FontWeight.BOLD
}
}
field("Path") {
label(it.path)
}
}
}
}
}
onUserSelect(1) {
information("You selected $it")
}
}
}
class Request(val hostname: String, val path: String, val body: ByteArray)