javafx - Scala - Get FXML UI-Elements -


i´m working on scala/javafx project intellij , plugin scala.
typical way in java access elements of fxml-file set id each element want access , in controllerclass declare variable "@fxml private label mylabelid;".
in scala works same way can see in source code. nullpointerexception in line 73 (marked problem-comment). label, set null. tried diffrent things. every single element getting set expected apart missinginputlabel.
loginview.fxml:

<?xml version="1.0" encoding="utf-8"?> <?import java.net.*?> <?import javafx.scene.control.*?> <?import javafx.scene.layout.*?> <gridpane xmlns:fx="http://javafx.com/fxml/1" fx:controller="logingui.logincontroller">     <stylesheets>         <url value="@/data/gtevstyle.css" />     </stylesheets>      <label text="ssh-nutzername:" gridpane.columnindex="0" gridpane.rowindex="0" />     <textfield fx:id="sshnamefield" prompttext="ssh-nutzername" onkeyreleased="#onkeyreleased_textfield" gridpane.columnindex="1" gridpane.rowindex="0" />     <label text="ssh-passwort:" gridpane.columnindex="0" gridpane.rowindex="1" />     <passwordfield fx:id="sshpasswdfield" prompttext="ssh-passwort" onkeyreleased="#onkeyreleased_textfield" gridpane.columnindex="1" gridpane.rowindex="1" />     <label text="datenbank-nutzername:" gridpane.columnindex="0" gridpane.rowindex="2" />     <textfield fx:id="databasenamefield" prompttext="datenbank-nutzername" onkeyreleased="#onkeyreleased_textfield" gridpane.columnindex="1" gridpane.rowindex="2" />     <label text="datenbank-passwort:" gridpane.columnindex="0" gridpane.rowindex="3" />     <passwordfield fx:id="databasepasswdfield" prompttext="datenbank-passwort" onkeyreleased="#onkeyreleased_textfield" gridpane.columnindex="1" gridpane.rowindex="3" />      <label text="name oder passwort falsch" fx:id="nameorpasswdwrong" styleclass="warninglabel" gridpane.columnindex="1" gridpane.rowindex="4" />     <label text="fehlende angaben" fx:id="missinginputlabel" styleclass="warninglabel" gridpane.columnindex="1" gridpane.rowindex="5" />     <button text="login" onaction="#login" gridpane.columnindex="0" gridpane.rowindex="5" /> </gridpane>

logincontroller.scala:

package logingui  import java.net.url import java.sql.sqlexception import java.util.resourcebundle import java.util.logging.level import java.util.logging.logger import javafx.fxml.fxml import javafx.fxml.initializable import javafx.scene.control.label import javafx.scene.control.passwordfield import javafx.scene.control.textfield import javafx.scene.input.keyevent import javafx.scene.input.keycode import connection.gtevconnection import javafx.stage.stage  class logincontroller extends initializable {   @fxml   private var nameorpasswdwrong: label = _   @fxml   private var missinginputlabel: label = _ //todo missinginputlabel set null?!   @fxml   private var sshnamefield: textfield = _   @fxml   private var databasenamefield: textfield = _   @fxml   private var sshpasswdfield: passwordfield = _   @fxml   private var databasepasswdfield: passwordfield = _   //um einfach auf alle text-/passwortfelder referenzieren zu können   private var textfields: array[textfield] = array[textfield](sshnamefield, databasenamefield, sshpasswdfield, databasepasswdfield)   var callbackwhenfinished: () => unit = () => gtevconnection.close() //default: close gtevconnection    def onkeyreleased_textfield(ev: keyevent) { //todo declare def private , mark @fxml?     if (ev.getcode == keycode.enter) {       login()     } else {       nameorpasswdwrong.setvisible(false)     }   }    def login() {     checkinputoftextfields()     try {       if (!missinginputlabel.isvisible) {         gtevconnection.createconnection(sshnamefield.gettext, sshpasswdfield.gettext, databasenamefield.gettext, databasepasswdfield.gettext)         callbackwhenfinished()         sshnamefield.getscene.getwindow.asinstanceof[stage].close()       }     } catch {       case ex: sqlexception =>         logger.getlogger("logincontollerlogger").log(level.severe, null, ex) //todo loggername durch klassennamen ersetzen         nameorpasswdwrong.setvisible(true)     }   }    private def checkinputoftextfields() {     var anymissinginput: boolean = false     (t: textfield <- textfields) {       if (t.gettext.isempty) {         anymissinginput = true         t.getstyleclass.add("missinginput")       } else {         t.getstyleclass.remove("missinginput")       }       missinginputlabel.setvisible(anymissinginput)     }   }    override def initialize(location: url, resources: resourcebundle) {     nameorpasswdwrong.setvisible(false)     missinginputlabel.setvisible(false) //problem: nullpointerexception   } }

tell me when missed or want know else , thank help.
greetings tracker

i found workaround. when declare missinginputlabel public works fine. don´t want declare public because of "information hiding".


Comments

Post a Comment

Popular posts from this blog

javascript - Using jquery append to add option values into a select element not working -

i'm looking dynamically populate select element names of items stored array. for reason it's not working , i'm not sure why. html: <div class="col-md-4 col-md-offset-4"> <select class="select1"> </select> , <select class="select2"> </select> </div> note i'm using bootstrap layout. here's jquery i'm using try , populate ".select1" jquery: select: function() { $.each(state.greens, function(index, value) { $(".select1").append("<option value =' " + index + " '>" + state.greens[index].name + "</option>"); }); } note function 'select' stored within object called 'display'. state.greens name of array i'm trying access. so @ end of html page call display.select(); call function. no error messages showing in console. also, saw question: appending
Read more

Android soft keyboard reverts to default keyboard on orientation change -

i'm building android soft keyboard , can't seem fix bug - have arabic , qwerty keyboard , when rotate device on qwerty keyboard (or arabic shift), it's if program has "restarted" , becomes arabic keyboard without shift. the onsaveinstancestate(bundle savedinstancestate) not work because application not extend activity inputmethodservice . i put following in android manifest android:configchanges="keyboard|keyboardhidden|orientation" android:windowsoftinputmode="stateunchanged|adjustresize"> i tried using @override public void onconfigurationchanged(configuration newconfig) { super.onconfigurationchanged(newconfig); log.i(mydebug, "config changed " + currentkeyboard.equals(qwerty)); } however, currentkeyboard.equals(qwerty)) results false , made sure true before orientation change. any appreciated. i think applications fault. if application restarting on orientation change
Read more

Rendering JButton to get the JCheckBox behavior in a JTable by using images does not update my table -

i rendering jbutton image on simulate jcheckbox behavior. why don't let jtable render jcheckbox? because need bigger checkboxes , there's no way can resize them (as far know). so, have own table cell renderer , editor. both renders jbutton , checkbox images on them. trying change image checked image unchecked image (or vice versa) , update cell value (boolean true or false). however, reason, getcelleditorvalue() not update table. so, release mouse, value goes original one. any appreciated! lot! public class tableexample extends jframe { jscrollpane pane; jpanel panel; jtable table; object[][] data; mytablemodel tm; renderer buttoncolumn; public tableexample(object[][] data) throws ioexception { string[] columns = {"column#1", "column#2", "column#3", "column#4", "column#5", "column#6"}; this.data = data; this.setpreferredsize(new dimension(700, 500));
Read more