Reuse the same scene in SceneContext by switching root nodes
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@ -4,7 +4,6 @@ import java.io.IOException;
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import java.util.Stack;
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import java.util.logging.Level;
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import javafx.application.Platform;
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import javafx.fxml.FXMLLoader;
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import javafx.scene.*;
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import javafx.stage.Stage;
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@ -29,11 +28,10 @@ import envoy.client.event.*;
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public final class SceneContext implements EventListener {
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private final Stage stage;
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private final FXMLLoader loader = new FXMLLoader();
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private final Stack<Scene> sceneStack = new Stack<>();
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private final Stack<Object> controllerStack = new Stack<>();
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private final Stack<Parent> roots = new Stack<>();
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private final Stack<Object> controllers = new Stack<>();
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private static final Settings settings = Settings.getInstance();
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private Scene scene;
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/**
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* Initializes the scene context.
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@ -49,41 +47,47 @@ public final class SceneContext implements EventListener {
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/**
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* Loads a new scene specified by a scene info.
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*
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* @param sceneInfo specifies the scene to load
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* @param info specifies the scene to load
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* @throws RuntimeException if the loading process fails
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* @since Envoy Client v0.1-beta
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*/
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public void load(SceneInfo sceneInfo) {
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EnvoyLog.getLogger(SceneContext.class).log(Level.FINER, "Loading scene " + sceneInfo);
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loader.setRoot(null);
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loader.setController(null);
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public void load(SceneInfo info) {
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EnvoyLog.getLogger(SceneContext.class).log(Level.FINER, "Loading scene " + info);
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try {
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final var rootNode =
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(Parent) loader.load(getClass().getResourceAsStream(sceneInfo.path));
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final var scene = new Scene(rootNode);
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final var controller = loader.getController();
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controllerStack.push(controller);
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sceneStack.push(scene);
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stage.setScene(scene);
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// Load root node and controller
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var loader = new FXMLLoader();
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Parent root = loader.load(getClass().getResourceAsStream(info.path));
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Object controller = loader.getController();
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roots.push(root);
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controllers.push(controller);
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if (scene == null) {
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// One-time scene initialization
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scene = new Scene(root);
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applyCSS();
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stage.setScene(scene);
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} else {
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scene.setRoot(root);
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stage.sizeToScene();
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}
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stage.setResizable(info.resizable);
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// Remove previous keyboard shortcuts
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scene.getAccelerators().clear();
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// Supply the global custom keyboard shortcuts for that scene
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scene.getAccelerators()
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.putAll(GlobalKeyShortcuts.getInstance().getKeyboardShortcuts(sceneInfo));
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.putAll(GlobalKeyShortcuts.getInstance().getKeyboardShortcuts(info));
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// Supply the scene specific keyboard shortcuts
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if (controller instanceof KeyboardMapping)
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scene.getAccelerators()
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.putAll(((KeyboardMapping) controller).getKeyboardShortcuts());
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Platform.runLater(() -> stage.setResizable(sceneInfo.resizable));
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stage.sizeToScene();
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applyCSS();
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stage.show();
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} catch (final IOException e) {
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EnvoyLog.getLogger(SceneContext.class).log(Level.SEVERE,
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String.format("Could not load scene for %s: ", sceneInfo), e);
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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@ -95,29 +99,30 @@ public final class SceneContext implements EventListener {
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*/
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public void pop() {
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// Pop scene and controller
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sceneStack.pop();
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controllerStack.pop();
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// Pop current root node and controller
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roots.pop();
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controllers.pop();
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// Apply new scene if present
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if (!sceneStack.isEmpty()) {
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final var newScene = sceneStack.peek();
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stage.setScene(newScene);
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applyCSS();
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stage.sizeToScene();
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// If the controller implements the Restorable interface,
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// the actions to perform on restoration will be executed here
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final var controller = controllerStack.peek();
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if (!roots.isEmpty()) {
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scene.setRoot(roots.peek());
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// Invoke restore if controller is restorable
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var controller = controllers.peek();
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if (controller instanceof Restorable)
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((Restorable) controller).onRestore();
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} else {
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// Remove the current scene entirely
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scene = null;
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stage.setScene(null);
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}
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stage.show();
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}
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private void applyCSS() {
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if (!sceneStack.isEmpty()) {
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final var styleSheets = stage.getScene().getStylesheets();
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final var themeCSS = "/css/" + settings.getCurrentTheme() + ".css";
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if (scene != null) {
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var styleSheets = scene.getStylesheets();
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var themeCSS = "/css/" + Settings.getInstance().getCurrentTheme() + ".css";
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styleSheets.clear();
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styleSheets.addAll(getClass().getResource("/css/base.css").toExternalForm(),
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getClass().getResource(themeCSS).toExternalForm());
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@ -126,8 +131,8 @@ public final class SceneContext implements EventListener {
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@Event(eventType = Logout.class, priority = 150)
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private void onLogout() {
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sceneStack.clear();
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controllerStack.clear();
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roots.clear();
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controllers.clear();
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}
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@Event(priority = 150, eventType = ThemeChangeEvent.class)
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@ -140,7 +145,7 @@ public final class SceneContext implements EventListener {
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* @return the controller used by the current scene
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* @since Envoy Client v0.1-beta
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*/
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public <T> T getController() { return (T) controllerStack.peek(); }
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public <T> T getController() { return (T) controllers.peek(); }
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/**
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* @return the stage in which the scenes are displayed
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@ -152,5 +157,5 @@ public final class SceneContext implements EventListener {
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* @return whether the scene stack is empty
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* @since Envoy Client v0.2-beta
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*/
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public boolean isEmpty() { return sceneStack.isEmpty(); }
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public boolean isEmpty() { return roots.isEmpty(); }
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}
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@ -93,7 +93,7 @@ public final class Startup extends Application {
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final var sceneContext = new SceneContext(stage);
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context.setSceneContext(sceneContext);
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// Authenticate with token if present
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// Authenticate with token if present or load login scene
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if (localDB.getAuthToken() != null) {
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logger.info("Attempting authentication with token...");
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localDB.loadUserData();
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@ -102,8 +102,9 @@ public final class Startup extends Application {
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VERSION, localDB.getLastSync())))
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sceneContext.load(SceneInfo.LOGIN_SCENE);
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} else
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// Load login scene
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sceneContext.load(SceneInfo.LOGIN_SCENE);
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stage.show();
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}
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/**
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