src/jalviewfx/controllers/engine/ScreensController.java

   1 package jalviewfx.controllers.engine;
   2
   3 import java.util.HashMap;
   4
   5 import javafx.animation.KeyFrame;
   6 import javafx.animation.KeyValue;
   7 import javafx.animation.Timeline;
   8 import javafx.beans.property.DoubleProperty;
   9 import javafx.event.Event;
  10 import javafx.event.EventHandler;
  11 import javafx.fxml.FXMLLoader;
  12 import javafx.scene.Node;
  13 import javafx.scene.Parent;
  14 import javafx.scene.layout.StackPane;
  15 import javafx.util.Duration;
  16 import application.App.Screens;
  17
  18 public class ScreensController extends StackPane {
  19         private HashMap<String, Node> screens = new HashMap<>();
  20
  21         public void addScreen(String name, Node screen) {
  22                 screens.put(name, screen);
  23         }
  24
  25         public boolean loadScreen(String name, String resource) {
  26                 try {
  27                         FXMLLoader myLoader = new FXMLLoader(getClass().getResource(resource));
  28                         Parent loadScreen = (Parent) myLoader.load();
  29                         ControlledScreen myScreenControler = ((ControlledScreen) myLoader.getController());
  30                         myScreenControler.setScreenParent(this);
  31                         addScreen(name, loadScreen);
  32                         return true;
  33                 } catch (Exception e) {
  34                         System.out.println(e.getMessage());
  35                         return false;
  36                 }
  37         }
  38
  39         public boolean setScreen(final Screens screen) {
  40
  41                 if (screens.get(screen.getName()) != null) { // screen loaded
  42                         final DoubleProperty opacity = opacityProperty();
  43
  44                         // Is there is more than one screen
  45                         if (!getChildren().isEmpty()) {
  46                                 @SuppressWarnings({ "unchecked", "rawtypes" })
  47                                 Timeline fade = new Timeline(new KeyFrame(Duration.ZERO, new KeyValue(opacity, 1.0)), new KeyFrame(new Duration(1000),
  48
  49                                 new EventHandler() {
  50                                         @Override
  51                                         public void handle(Event t) {
  52                                                 // remove displayed screen
  53                                                 getChildren().remove(0);
  54                                                 // add new screen
  55                                                 getChildren().add(0, screens.get(screen.getName()));
  56                                                 Timeline fadeIn = new Timeline(new KeyFrame(Duration.ZERO, new KeyValue(opacity, 0.0)),
  57                                                                 new KeyFrame(new Duration(800), new KeyValue(opacity, 1.0)));
  58                                                 fadeIn.play();
  59                                         }
  60
  61                                 }, new KeyValue(opacity, 0.0)));
  62                                 fade.play();
  63                         } else {
  64                                 // no one else been displayed, then just show
  65                                 setOpacity(0.0);
  66                                 getChildren().add(screens.get(screen.getName()));
  67                                 Timeline fadeIn = new Timeline(new KeyFrame(Duration.ZERO, new KeyValue(opacity, 0.0)),
  68                                                 new KeyFrame(new Duration(2500), new KeyValue(opacity, 1.0)));
  69                                 fadeIn.play();
  70                         }
  71                         return true;
  72                 } else {
  73                         System.out.println("screen hasn't been loaded!\n");
  74                         return false;
  75                 }
  76         }
  77
  78         public boolean unloadScreen(String name) {
  79                 if (screens.remove(name) == null) {
  80                         System.out.println("Screen didn't exist");
  81                         return false;
  82                 } else {
  83                         return true;
  84                 }
  85         }
  86 }