wip #34 - reformatting the channel configuration editors.

src/gui/editor/EditorValidationException.java

@@ -0,0 +1,25 @@
+package gui.editor;
+
+public class EditorValidationException extends Exception
+{
+	private static final long serialVersionUID = 1L;
+
+	private Editor<?> mEditor;
+	private String mReason;
+	
+	public EditorValidationException( Editor<?> editor, String reason )
+	{
+		mEditor = editor;
+		mReason = reason;
+	}
+
+	public Editor<?> getEditor()
+	{
+		return mEditor;
+	}
+	
+	public String getReason()
+	{
+		return mReason;
+	}
+}

src/gui/editor/EmptyValidatingEditor.java

@@ -0,0 +1,37 @@
+package gui.editor;
+
+import javax.swing.JLabel;
+
+import net.miginfocom.swing.MigLayout;
+
+public class EmptyValidatingEditor<T> extends ValidatingEditor<T>
+{
+	private static final long serialVersionUID = 1L;
+
+	public EmptyValidatingEditor( String descriptor )
+	{
+		setLayout( new MigLayout( "insets 0 0 0 0", "[center]", "[grow]" ) );
+		add( new JLabel( "Please select " + descriptor ), "wrap" );
+	}
+	
+	public EmptyValidatingEditor()
+	{
+		this( "an item" );
+	}
+
+	@Override
+	public void save()
+	{
+	}
+
+	@Override
+	public void reset()
+	{
+	}
+
+	@Override
+	public boolean isValid( Editor<T> editor ) throws EditorValidationException
+	{
+		return true;
+	}
+}

src/gui/editor/ValidatingEditor.java

@@ -0,0 +1,15 @@
+package gui.editor;
+
+
+/**
+ * Editor class that allows other editors to be validated for configuration with this editor
+ */
+public abstract class ValidatingEditor<T> extends Editor<T>
+{
+	private static final long serialVersionUID = 1L;
+
+	/**
+	 * Indicates if the editor argument is valid according to the settings of this editor
+	 */
+	public abstract boolean isValid( Editor<T> editor ) throws EditorValidationException;
+}