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Diffstat (limited to 'src/jcgp/gui/handlers/OutputHandlers.java')
-rw-r--r-- | src/jcgp/gui/handlers/OutputHandlers.java | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/jcgp/gui/handlers/OutputHandlers.java b/src/jcgp/gui/handlers/OutputHandlers.java new file mode 100644 index 0000000..b89d746 --- /dev/null +++ b/src/jcgp/gui/handlers/OutputHandlers.java @@ -0,0 +1,84 @@ +package jcgp.gui.handlers; + +import javafx.event.EventHandler; +import javafx.scene.input.MouseEvent; +import jcgp.backend.population.Gene; +import jcgp.gui.population.GUIConnection; +import jcgp.gui.population.GUIGene.GUIGeneState; +import jcgp.gui.population.GUIOutput; + +/** + * Holds the handlers that define the behaviour of {@code GUIOutput}. + * <br><br> + * The handlers are instantiated here statically and added to {@code GUIOutput} + * instances using {@code OutputHandlers.addHandlers(...)}. This guarantees that + * all outputs behave the same way without instantiating a new set of handlers for + * each output instance. + * + * @author Eduardo Pedroni + * + */ +public final class OutputHandlers { + + /** + * Private constructor to prevent instantiation. + */ + private OutputHandlers() {} + + /** + * Set the output to {@code GUIGeneState.HOVER} state, and recursively set its active genes + * to {@code GUIGeneState.ACTIVE_HOVER}. + */ + private static EventHandler<MouseEvent> mouseEnteredHandler = new EventHandler<MouseEvent>() { + @Override + public void handle(MouseEvent event) { + // acquire the source, we can safely cast it to GUIOutput + GUIOutput source = (GUIOutput) event.getSource(); + + source.setState(GUIGeneState.HOVER); + ((GUIConnection) ((Gene) source.getOutput().getSource()).getGUIObject()).setStateRecursively(GUIGeneState.ACTIVE_HOVER); + } + }; + + /** + * Set the output and all of its active genes to {@code GUIGeneState.NEUTRAL} state. + */ + private static EventHandler<MouseEvent> mouseExitedHandler = new EventHandler<MouseEvent>() { + @Override + public void handle(MouseEvent event) { + // acquire the source, we can safely cast it to GUIOutput + GUIOutput source = (GUIOutput) event.getSource(); + + source.setState(GUIGeneState.NEUTRAL); + ((GUIConnection) ((Gene) source.getOutput().getSource()).getGUIObject()).setStateRecursively(GUIGeneState.NEUTRAL); + } + }; + + /** + * If the output is locked, unlock it and all of its associated genes recursively. + * If it is unlocked, lock it and its active genes. + */ + private static EventHandler<MouseEvent> mouseClickHandler = new EventHandler<MouseEvent>() { + @Override + public void handle(MouseEvent event) { + // acquire the source, we can safely cast it to GUIOutput + GUIOutput source = (GUIOutput) event.getSource(); + + boolean lock = !source.isLocked(); + source.setLock(lock); + ((GUIConnection) ((Gene) source.getOutput().getSource()).getGUIObject()).setLockRecursively(lock); + } + }; + + /** + * Adds all handlers to the specified output. + * + * @param output the {@code GUIOutput} to which the handlers will be added. + */ + public static void addHandlers(GUIOutput output) { + output.addEventHandler(MouseEvent.MOUSE_ENTERED, mouseEnteredHandler); + output.addEventHandler(MouseEvent.MOUSE_EXITED, mouseExitedHandler); + output.addEventHandler(MouseEvent.MOUSE_CLICKED, mouseClickHandler); + } + +} |