Made Display.getImplementation package private, and made the input.* packages access it through reflection.

src/java/org/lwjgl/input/Cursor.java

@@ -38,7 +38,7 @@ import org.lwjgl.BufferUtils;
 import org.lwjgl.LWJGLException;
 import org.lwjgl.LWJGLUtil;
 import org.lwjgl.Sys;
-import org.lwjgl.opengl.Display;
+import org.lwjgl.opengl.DisplayImplementation;
 
 /**
  *
@@ -115,7 +115,7 @@ public class Cursor {
 	 * @return the maximum size of a native cursor
 	 */
 	public static int getMinCursorSize() {
-		return Display.getImplementation().getMinCursorSize();
+		return Mouse.getImplementation().getMinCursorSize();
 	}
 
 	/**
@@ -126,7 +126,7 @@ public class Cursor {
 	 * @return the maximum size of a native cursor
 	 */
 	public static int getMaxCursorSize() {
-		return Display.getImplementation().getMaxCursorSize();
+		return Mouse.getImplementation().getMaxCursorSize();
 	}
 
 	/**
@@ -138,7 +138,7 @@ public class Cursor {
 	 * @return A bit mask with native cursor capabilities.
 	 */
 	public static int getCapabilities() {
-		return Display.getImplementation().getNativeCursorCapabilities();
+		return Mouse.getImplementation().getNativeCursorCapabilities();
 	}
 
 	/**
@@ -164,7 +164,7 @@ public class Cursor {
 				// create our cursor elements
 				cursors = new CursorElement[numImages];
 				for(int i=0; i<numImages; i++) {
-					Object handle = Display.getImplementation().createCursor(width, height, xHotspot, yHotspot, 1, images_copy, null);
+					Object handle = Mouse.getImplementation().createCursor(width, height, xHotspot, yHotspot, 1, images_copy, null);
 					long delay = (delays != null) ? delays.get(i) : 0;
 					long timeout = System.currentTimeMillis();
 					cursors[i] = new CursorElement(handle, delay, timeout);
@@ -175,7 +175,7 @@ public class Cursor {
 				break;
 			case LWJGLUtil.PLATFORM_LINUX:
 				// create our cursor elements
-				Object handle = Display.getImplementation().createCursor(width, height, xHotspot, yHotspot, numImages, images_copy, delays);
+				Object handle = Mouse.getImplementation().createCursor(width, height, xHotspot, yHotspot, numImages, images_copy, delays);
 				CursorElement cursor_element = new CursorElement(handle, -1, -1);
 				cursors = new CursorElement[]{cursor_element};
 				break;
@@ -251,7 +251,7 @@ public class Cursor {
 			}
 		}
 		for(int i=0; i<cursors.length; i++) {
-			Display.getImplementation().destroyCursor(cursors[i].cursorHandle);
+			Mouse.getImplementation().destroyCursor(cursors[i].cursorHandle);
 		}
 		destroyed = true;
 	}

src/java/org/lwjgl/input/Keyboard.java

@@ -42,6 +42,7 @@ import org.lwjgl.BufferUtils;
 import org.lwjgl.LWJGLException;
 import org.lwjgl.Sys;
 import org.lwjgl.opengl.Display;
+import org.lwjgl.opengl.DisplayImplementation;
 
 /**
  * <br>
@@ -263,6 +264,8 @@ public class Keyboard {
 	/** One time initialization */
 	private static boolean initialized;
 
+	private static DisplayImplementation implementation;
+
 	/**
 	 * Keyboard cannot be constructed.
 	 */
@@ -292,7 +295,8 @@ public class Keyboard {
 			initialize();
 		if (created)
 			return;
-		Display.getImplementation().createKeyboard();
+		implementation = Mouse.getImplementation();
+		implementation.createKeyboard();
 		created = true;
 		readBuffer = ByteBuffer.allocate(EVENT_SIZE*BUFFER_SIZE);
 		reset();
@@ -321,7 +325,7 @@ public class Keyboard {
 		if (!created)
 			return;
 		created = false;
-		Display.getImplementation().destroyKeyboard();
+		implementation.destroyKeyboard();
 		reset();
 	}
 
@@ -346,13 +350,13 @@ public class Keyboard {
 	public static void poll() {
 		if (!created)
 			throw new IllegalStateException("Keyboard must be created before you can poll the device");
-		Display.getImplementation().pollKeyboard(keyDownBuffer);
+		implementation.pollKeyboard(keyDownBuffer);
 		read();
 	}
 
 	private static void read() {
 		readBuffer.compact();
-		Display.getImplementation().readKeyboard(readBuffer);
+		implementation.readKeyboard(readBuffer);
 		readBuffer.flip();
 	}
 
@@ -376,7 +380,7 @@ public class Keyboard {
 /*	public static int isStateKeySet(int key) {
 		if (!created)
 			throw new IllegalStateException("Keyboard must be created before you can query key state");
-		return Display.getImplementation().isStateKeySet(key);
+		return implementation.isStateKeySet(key);
 	}
 */
 	/**

src/java/org/lwjgl/input/Mouse.java

@@ -40,8 +40,15 @@ import org.lwjgl.BufferUtils;
 import org.lwjgl.LWJGLException;
 import org.lwjgl.LWJGLUtil;
 import org.lwjgl.Sys;
+import org.lwjgl.opengl.DisplayImplementation;
 import org.lwjgl.opengl.Display;
 
+import java.lang.reflect.Method;
+import java.security.AccessController;
+import java.security.PrivilegedExceptionAction;
+import java.security.PrivilegedActionException;
+
+
 /**
  * <br>
  * A raw Mouse interface. This can be used to poll the current state of the
@@ -126,6 +133,8 @@ public class Mouse {
 	private static final int	BUFFER_SIZE									= 50;
 
 	private static boolean		isGrabbed;
+
+	private static DisplayImplementation implementation;
   
   /** Whether we're running windows - which need to manually update cursor animation */
   private static final boolean isWindows = LWJGLUtil.getPlatform() == LWJGLUtil.PLATFORM_WINDOWS;
@@ -163,10 +172,10 @@ public class Mouse {
 		currentCursor = cursor;
 		if (isCreated()) {
 			if (currentCursor != null) {
-				Display.getImplementation().setNativeCursor(currentCursor.getHandle());
+				implementation.setNativeCursor(currentCursor.getHandle());
 				currentCursor.setTimeout();
 			} else {
-				Display.getImplementation().setNativeCursor(null);
+				implementation.setNativeCursor(null);
 			}
 		}
 		return oldCursor;
@@ -187,7 +196,7 @@ public class Mouse {
 		x = event_x = new_x;
 		y = event_y = new_y;
 		if (!isGrabbed() && (Cursor.getCapabilities() & Cursor.CURSOR_ONE_BIT_TRANSPARENCY) != 0)
-			Display.getImplementation().setCursorPosition(x, y);
+			implementation.setCursorPosition(x, y);
 	}
 	
 	/**
@@ -211,6 +220,23 @@ public class Mouse {
 		readBuffer.position(readBuffer.limit());
 	}
 
+	static DisplayImplementation getImplementation() {
+		/* Use reflection since we can't make Display.getImplementation
+		 * public
+		 */
+		try {
+			return (DisplayImplementation)AccessController.doPrivileged(new PrivilegedExceptionAction() {
+				public Object run() throws Exception{
+					Method getImplementation_method = Display.class.getDeclaredMethod("getImplementation", null);
+					getImplementation_method.setAccessible(true);
+					return getImplementation_method.invoke(null, null);
+				}
+			});
+		} catch (PrivilegedActionException e) {
+			throw new Error(e);
+		}
+	}
+
 	/**
 	 * "Create" the mouse. The display must first have been created.
 	 * Initially, the mouse is not grabbed and the delta values are reported
@@ -224,12 +250,13 @@ public class Mouse {
 		if (!initialized)
 			initialize();
 		if (created) return;
-		Display.getImplementation().createMouse();
-		hasWheel = Display.getImplementation().hasWheel();
+		implementation = getImplementation();
+		implementation.createMouse();
+		hasWheel = implementation.hasWheel();
 		created = true;
 
 		// set mouse buttons
-		buttonCount = Display.getImplementation().getButtonCount();
+		buttonCount = implementation.getButtonCount();
 		buttons = BufferUtils.createByteBuffer(buttonCount);
 		coord_buffer = BufferUtils.createIntBuffer(3);
 		if (currentCursor != null)
@@ -255,7 +282,7 @@ public class Mouse {
 		buttons = null;
 		coord_buffer = null;
 
-		Display.getImplementation().destroyMouse();
+		implementation.destroyMouse();
 	}
 
 	/**
@@ -281,7 +308,7 @@ public class Mouse {
 	 */
 	public static void poll() {
 		if (!created) throw new IllegalStateException("Mouse must be created before you can poll it");
-		Display.getImplementation().pollMouse(coord_buffer, buttons);
+		implementation.pollMouse(coord_buffer, buttons);
 
 		/* If we're grabbed, poll returns mouse deltas, if not it returns absolute coordinates */
 		int poll_coord1 = coord_buffer.get(0);
@@ -308,7 +335,7 @@ public class Mouse {
 
 	private static void read() {
 		readBuffer.compact();
-		Display.getImplementation().readMouse(readBuffer);
+		implementation.readMouse(readBuffer);
 		readBuffer.flip();
 	}
 
@@ -527,7 +554,7 @@ public class Mouse {
 	public static void setGrabbed(boolean grab) {
 		isGrabbed = grab;
 		if (isCreated()) {
-			Display.getImplementation().grabMouse(isGrabbed);
+			implementation.grabMouse(isGrabbed);
 			resetMouse();
 		}
 	}

src/java/org/lwjgl/opengl/Display.java

@@ -718,7 +718,7 @@ public final class Display {
 		GL11.glViewport(0, 0, current_mode.getWidth(), current_mode.getHeight());
 	}
 
-	public static DisplayImplementation getImplementation() {
+	static DisplayImplementation getImplementation() {
 		return display_impl;
 	}