Added existing source code

1 files changed, 122 insertions, 0 deletions

diff --git a/src/jcgp/gui/console/ConsolePane.java b/src/jcgp/gui/console/ConsolePane.java
new file mode 100644
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+++ b/src/jcgp/gui/console/ConsolePane.java
@@ -0,0 +1,122 @@
+package jcgp.gui.console;
+
+import javafx.event.ActionEvent;
+import javafx.event.Event;
+import javafx.event.EventDispatchChain;
+import javafx.event.EventDispatcher;
+import javafx.event.EventHandler;
+import javafx.scene.control.ContextMenu;
+import javafx.scene.control.MenuItem;
+import javafx.scene.control.SeparatorMenuItem;
+import javafx.scene.control.TextArea;
+import javafx.scene.input.MouseButton;
+import javafx.scene.input.MouseEvent;
+import javafx.scene.layout.AnchorPane;
+import jcgp.backend.resources.Console;
+import jcgp.gui.constants.Constants;
+
+/**
+ * Console pane used by the GUI to display CGP output messages.
+ * This class realises {@code Console}. It consists of a JavaFX
+ * {@code TextArea} and a {@code StringBuffer}. The buffer is filled
+ * as print messages are queued. Calling {@code flush()} writes the
+ * contents of the buffer to the {@code TextArea} and empties the buffer.
+ * 
+ * @see Console
+ * @author Eduardo Pedroni
+ *
+ */
+public class ConsolePane extends AnchorPane implements Console {
+	
+	private TextArea textArea = new TextArea("Welcome to JCGP!\n");
+	private StringBuffer printBuffer = new StringBuffer();
+		
+	/**
+	 * Creates a new instance of this class.
+	 */
+	public ConsolePane() {
+		super();
+		textArea.setEditable(false);
+		/*
+		 * This nasty hack is needed because the default TextArea ContextMenu is not
+		 * in the public API, making it impossible to override it with a custom one.
+		 * This has not been fixed as of 8/4/2014.
+		 * 
+		 * The following code modifies the EventDispatcher to consume the right mouse
+		 * button click, preventing the default menu from appearing. It propagates the mouse
+		 * click further so other elements will respond appropriately.
+		 * 
+		 * TODO this should be refactored once the API is updated.
+		 */
+		final EventDispatcher initial = textArea.getEventDispatcher();
+		textArea.setEventDispatcher(new EventDispatcher() {
+			@Override
+			public Event dispatchEvent(Event event, EventDispatchChain tail) {
+				if (event instanceof MouseEvent) {
+					MouseEvent mouseEvent = (MouseEvent)event;
+					if (mouseEvent.getButton() == MouseButton.SECONDARY || 
+							(mouseEvent.getButton() == MouseButton.PRIMARY && mouseEvent.isControlDown())) {
+						event.consume();
+					}
+				}
+				return initial.dispatchEvent(event, tail);
+			}
+		});
+		
+		// make the new context menu including the clear option		
+		MenuItem copySelected = new MenuItem("Copy");
+		copySelected.setOnAction(new EventHandler<ActionEvent>() {	
+			@Override
+			public void handle(ActionEvent event) {
+				textArea.copy();
+			}
+		});
+		MenuItem selectAll = new MenuItem("Select all");
+		selectAll.setOnAction(new EventHandler<ActionEvent>() {	
+			@Override
+			public void handle(ActionEvent event) {
+				textArea.selectAll();
+			}
+		});
+		MenuItem clearConsole = new MenuItem("Clear");
+		clearConsole.setOnAction(new EventHandler<ActionEvent>() {	
+			@Override
+			public void handle(ActionEvent event) {
+				textArea.setText("");
+			}
+		});
+				
+		textArea.setContextMenu(new ContextMenu(copySelected,
+												selectAll, 
+												new SeparatorMenuItem(),
+												clearConsole));
+		
+		// anchor the text area so it resizes automatically
+		AnchorPane.setTopAnchor(textArea, Constants.RESIZE_MARGIN);
+		AnchorPane.setBottomAnchor(textArea, 0.0);
+		AnchorPane.setRightAnchor(textArea, 0.0);
+		AnchorPane.setLeftAnchor(textArea, 0.0);
+		
+		setMinHeight(Constants.CONSOLE_MIN_HEIGHT);
+		setPrefHeight(Constants.CONSOLE_MIN_HEIGHT);
+		
+		getChildren().add(textArea);
+	}
+
+	@Override
+	public void println(String s) {
+		printBuffer.append(s + "\n");
+	}
+
+	@Override
+	public void print(String s) {
+		printBuffer.append(s);
+	}
+
+	@Override
+	public void flush() {
+		textArea.appendText(printBuffer.toString());
+		printBuffer = new StringBuffer();
+	}
+	
+}