Added basic keyboard shortcut infrastructure

.classpath

@@ -23,16 +23,5 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
-		<attributes>
-			<attribute name="maven.pomderived" value="true"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources">
-		<attributes>
-			<attribute name="maven.pomderived" value="true"/>
-			<attribute name="test" value="true"/>
-		</attributes>
-	</classpathentry>
 	<classpathentry kind="output" path="target/classes"/>
 </classpath>

src/main/java/nz/ac/massey/cs/flackpad/KeyBinder.java

@@ -0,0 +1,115 @@
+package nz.ac.massey.cs.flackpad;
+
+import java.awt.datatransfer.Clipboard;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.StringSelection;
+import java.awt.datatransfer.Transferable;
+import java.awt.event.ActionEvent;
+import java.awt.event.InputEvent;
+import java.awt.event.KeyEvent;
+import java.awt.Toolkit;
+import javax.swing.AbstractAction;
+import javax.swing.Action;
+import javax.swing.KeyStroke;
+
+public class KeyBinder {
+	private Window windowInstance;
+	KeyBinder(Window windowInstance) {
+		this.windowInstance = windowInstance;
+		addKeyBindings();
+	}
+
+	private void addKeyBindings() {
+
+		TextArea textArea =  windowInstance.getTextArea();
+
+        // Common key shortcuts
+        KeyStroke ctrl_s = KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_DOWN_MASK);
+        KeyStroke ctrl_c = KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_DOWN_MASK);
+        KeyStroke ctrl_v = KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_DOWN_MASK);
+        KeyStroke ctrl_x = KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_DOWN_MASK);
+
+        /*** Actions ***/
+
+        // Save action
+    	Action save = new AbstractAction() {
+			private static final long serialVersionUID = 1L;
+			public void actionPerformed(ActionEvent e) {
+				FileIO.save(windowInstance);
+    	    }
+    	};
+
+        // Copy action
+    	Action copy = new AbstractAction() {
+			private static final long serialVersionUID = 1L;
+			public void actionPerformed(ActionEvent e) {
+    	    	try {
+    	    		StringSelection stringSelection = new StringSelection(textArea.getSelectedText());
+    	    		Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
+    	    		clipboard.setContents(stringSelection, null);
+    	    	}
+    	    	catch (Exception err) {
+    				Dialogs.error("Could not copy selected text to clipboard", windowInstance);
+    	    	}
+    	    }
+    	};
+
+        // Cut action
+    	Action cut = new AbstractAction() {
+			private static final long serialVersionUID = 1L;
+			public void actionPerformed(ActionEvent e) {
+    	    	try {
+    	    		StringSelection stringSelection = new StringSelection(textArea.getSelectedText());
+    	    		textArea.replaceSelection("");
+    	    		Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
+    	    		clipboard.setContents(stringSelection, null);
+    	    	}
+    	    	catch (Exception err) {
+    				Dialogs.error("Could not cut selected", windowInstance);
+    	    	}
+    	    }
+    	};
+
+        // Paste action
+    	Action paste = new AbstractAction() {
+			private static final long serialVersionUID = 1L;
+			public void actionPerformed(ActionEvent e) {
+    	    	try {
+    	    		/*
+    	    		 * Handle 2 cases:
+    	    		 * a. Paste with text selected 
+    	    		 * b. Paste with no text selected
+    	    		 */
+    	    		Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
+    	    		Transferable data = clipboard.getContents(null);
+
+    	    	    String plaintext = (String) data.getTransferData(DataFlavor.stringFlavor);
+
+    	    		if (textArea.getSelectedText() != null) {
+    	    			// .a
+        	    		textArea.replaceSelection(plaintext);
+    	    		} else {
+    	    			// .b
+    	    			textArea.insert(plaintext, textArea.getCaretPosition());
+    	    		}
+    	    	}
+    	    	catch (Exception err) {
+    				Dialogs.error("Could not paste from clipboard", windowInstance);
+    	    	}
+    	    }
+    	};
+
+    	// Adding key bindings
+    	makeBinding(textArea, ctrl_s, "save_msg", save);
+    	makeBinding(textArea, ctrl_c, "copy_msg", copy);
+    	makeBinding(textArea, ctrl_v, "paste_msg", paste);
+    	makeBinding(textArea, ctrl_x, "cut_msg", cut);
+
+	}
+
+	private void makeBinding(TextArea area, KeyStroke key, String msg, Action act) {
+		area.getInputMap().put(key, msg);    
+        area.getActionMap().put(msg, act);  
+	}
+}
+

src/main/java/nz/ac/massey/cs/flackpad/Window.java

@@ -32,6 +32,9 @@ class Window extends JFrame {
 		textArea = new TextArea(this);
 		frame.add(new JScrollPane(textArea));
 
+		// Add key bindings to instance
+		new KeyBinder(this);
+
 		frame.setSize(1000, 500);
 		frame.setVisible(true);
 		frame.setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);