I want to use a TableView in scalafx to have a nice table in my GUI where the user can see and input data. There are some nice methods in the classes TableViewSelectionModel and TableViewFocusModel that I would like to use, like for example selectionMode, selectedCells and selectBelowCell from TableViewSelectionModel or focus(pos), focusedCell and focusBelowCell from TableViewFocusModel.
I have the following example, that comes mainly from a YouTube-video from Mark Lewis (who makes excellent learning videos for scala and scalafx by the way, but doesn't cover this topic):
import scalafx.Includes._
import scalafx.application.JFXApp
import scalafx.beans.property.{ObjectProperty, StringProperty}
import scalafx.collections.ObservableBuffer
import scalafx.scene.Scene
import scalafx.scene.control.cell.TextFieldTableCell
import scalafx.scene.control.{TableColumn, TableView}
import scalafx.util.converter.DefaultStringConverter
object Main extends JFXApp {
case class Student(name: String, test1: Int, test2: Int)
val data = new ObservableBuffer[Student]()
data ++= List(Student("Jane Doe", 99, 93), Student("John Doe", 73, 88), Student("Bob Builder", 85, 91))
stage = new JFXApp.PrimaryStage {
title = "Test for Table View"
resizable = true
width = 1000
height = 800
val table: TableView[Student] = new TableView[Student](data) {
editable = true
//selectionModel = TableView.TableViewSelectionModel[Tables.Student] ???
//focusModel = TableView.TableViewFocusModel[Tables.Student] ???
}
println("selection model: " + table.selectionModel)
println("focus model: " + table.focusModel)
val col1: TableColumn[Student, String] = new TableColumn[Student, String] {
text = "Name"
editable = true
cellValueFactory = { cdf: TableColumn.CellDataFeatures[Student, String] => StringProperty(cdf.value.name) }
cellFactory = (_: TableColumn[Student, String]) => new TextFieldTableCell[Student, String](new DefaultStringConverter())
}
val col2: TableColumn[Student, Int] = new TableColumn[Student, Int] {
text = "Test 1"
editable = true
cellValueFactory = { cdf => ObjectProperty(cdf.value.test1) }
}
val col3: TableColumn[Student, Int] = new TableColumn[Student, Int] {
text = "Test 2"
editable = true
cellValueFactory = { cdf => ObjectProperty(cdf.value.test2) }
}
val col4: TableColumn[Student, Double] = new TableColumn[Student, Double] {
text = "Average"
cellValueFactory = { cdf => ObjectProperty((cdf.value.test1 + cdf.value.test2) / 2.0) }
}
val col5: TableColumn[Student, String] = new TableColumn[Student, String] {
text = "Test-Input"
editable = true
cellFactory = (_: TableColumn[Student, String]) => { new TextFieldTableCell[Student, String](new DefaultStringConverter())
}
}
table.columns ++= List(col1, col2, col3, col4, col5)
scene = new Scene {
root = table
}
}
}
My problem is that I don't know java or javaFX. I tried to get the information from the javaFX doc, but that was not really helpful.
For example, javaFX has a method for tables .setSelectionMode(SelectionMode.MULTIPLE); that sets the selection mode, but how do I do this in scalafx?
It would help me, if someone could modify the above code, so that single cells are selected and not whole rows. I am pretty sure from there I can figure out the rest on my own.
P.S.: I compiled the above code with sbt version 1.2.8, and my build.sbt file was:
name := "TestTableView"
scalaVersion := "2.13.5"
// Scala FX
libraryDependencies += "org.scalafx" %% "scalafx" % "15.0.1-R21"
libraryDependencies += "org.scala-lang.modules" %% "scala-xml" % "1.2.0"
libraryDependencies += "org.scalatest" %% "scalatest" % "3.2.3"
fork := true
// Tell Javac and scalac for which jvm it has to build (not really necessary)
javacOptions ++= Seq("-source", "1.8", "-target", "1.8")
scalacOptions += "-target:jvm-1.8"
scalacOptions += "-feature"
With the problem of wrong highlighting out of the way, the solution is simple. Just for reference, here is the above code modified with all the asked Options for TableView:
import scalafx.Includes._
import scalafx.application.JFXApp
import scalafx.beans.property.{ObjectProperty, StringProperty}
import scalafx.collections.ObservableBuffer
import scalafx.scene.Scene
import scalafx.scene.control.SelectionMode.Multiple
import scalafx.scene.control.cell.TextFieldTableCell
import scalafx.scene.control.{TableColumn, TableView}
import scalafx.util.converter.DefaultStringConverter
object Main extends JFXApp {
case class Student(name: String, test1: Int, test2: Int)
val data = new ObservableBuffer[Student]()
data ++= List(Student("Jane Doe", 99, 93), Student("John Doe", 73, 88), Student("Bob Builder", 85, 91))
stage = new JFXApp.PrimaryStage {
title = "Test for Table View"
resizable = true
width = 1000
height = 800
val table: TableView[Student] = new TableView[Student](data) {
editable = true
selectionModel.apply.cellSelectionEnabled = true
selectionModel().selectionMode = Multiple //Choose between Single and Multiple
selectionModel.apply.selectedItem.onChange {
println("Selected" + selectionModel.apply.getSelectedItem)
println("Selected row-Index: " + selectionModel.apply.selectedIndex.value)
println("Selected cells: " + table.selectionModel().selectedCells)
println("Focused Cell: " + table.focusModel().focusedCell)
}
}
val col1: TableColumn[Student, String] = new TableColumn[Student, String] {
text = "Name"
editable = true
cellValueFactory = { cdf: TableColumn.CellDataFeatures[Student, String] => StringProperty(cdf.value.name) }
cellFactory = (_: TableColumn[Student, String]) => new TextFieldTableCell[Student, String](new DefaultStringConverter())
}
val col2: TableColumn[Student, Int] = new TableColumn[Student, Int] {
text = "Test 1"
editable = true
cellValueFactory = { cdf: TableColumn.CellDataFeatures[Student, Int] => ObjectProperty(cdf.value.test1) }
//cellFactory = (_: TableColumn[Student, String]) => new TextFieldTableCell[Student, String](new DefaultStringConverter())
}
val col3: TableColumn[Student, Int] = new TableColumn[Student, Int] {
text = "Test 2"
editable = true
cellValueFactory = { cdf => ObjectProperty(cdf.value.test2) }
}
val col4: TableColumn[Student, Double] = new TableColumn[Student, Double] {
text = "Average"
cellValueFactory = { cdf => ObjectProperty((cdf.value.test1 + cdf.value.test2) / 2.0) }
}
val col5: TableColumn[Student, String] = new TableColumn[Student, String] {
text = "Test-Input"
editable = true
cellFactory = (_: TableColumn[Student, String]) => {
new TextFieldTableCell[Student, String](new DefaultStringConverter())
}
}
table.columns ++= List(col1, col2, col3, col4, col5)
table.requestFocus()
table.selectionModel().select(1, col1) //Select 2'nd (count starts at 0) cell in col2, that is Test1
table.focusModel().focus(1, col1) //Set focus on
table.edit(1, col1) //wander what this is doing
table.selectionModel().selectBelowCell() //Selects the cell below
table.focusModel().focusBelowCell() //Focuses on the cell below
scene = new Scene {
root = table
}
}