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SWT is an open source widget toolkit for Java designed to provide efficient, portable access to the user-interface facilities of the operating systems on which it is implemented.

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/*******************************************************************************
 * Copyright (c) 2000, 2012 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.internal;

import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.widgets.Control;

/*
 * This class is supplied so that the StyledText code that supports bidi text (supported
 * for win platforms) is not platform dependent.  Bidi text is not implemented on 
 * emulated platforms.
 */
public class BidiUtil {
	// Keyboard language types
	public static final int KEYBOARD_NON_BIDI = 0;
	public static final int KEYBOARD_BIDI = 1;

	// bidi rendering input flag constants, not used
	// on emulated platforms
	public static final int CLASSIN = 1;
	public static final int LINKBEFORE = 2;
	public static final int LINKAFTER = 4;

	// bidi rendering/ordering constants, not used on 
	// emulated platforms
	public static final int CLASS_HEBREW = 2;
	public static final int CLASS_ARABIC = 2;
	public static final int CLASS_LOCALNUMBER = 4;
	public static final int CLASS_LATINNUMBER = 5;	
	public static final int REORDER = 0;				
	public static final int LIGATE = 0;
	public static final int GLYPHSHAPE = 0;

/*
 * Not implemented.
 */
public static void addLanguageListener(long /*int*/ hwnd, Runnable runnable) {
}
public static void addLanguageListener (Control control, Runnable runnable) {
}
/*
 * Not implemented.
 *
 */
public static void drawGlyphs(GC gc, char[] renderBuffer, int[] renderDx, int x, int y) {
}
/*
 * Bidi not supported on emulated platforms.
 *
 */
public static boolean isBidiPlatform() {
	return false;
}
/*
 * Not implemented.
 */
public static boolean isKeyboardBidi() {
	return false;
}
/*
 * Not implemented.
 */
public static int getFontBidiAttributes(GC gc) {
	return 0;	
}
/*
 *  Not implemented.
 *
 */
public static void getOrderInfo(GC gc, String text, int[] order, byte[] classBuffer, int flags, int [] offsets) {
}
/*
 *  Not implemented. Returns null.
 *
 */
public static char[] getRenderInfo(GC gc, String text, int[] order, byte[] classBuffer, int[] dx, int flags, int[] offsets) {
	return null;
}
/*
 * Not implemented. Returns 0.
 */
public static int getKeyboardLanguage() {
	return 0;
}
/*
 * Not implemented.
 */
public static void removeLanguageListener(long /*int*/ hwnd) {
}	
public static void removeLanguageListener (Control control) {
}
/*
 * Not implemented.
 */
public static void setKeyboardLanguage(int language) {
}
/*
 * Not implemented.
 */
public static boolean setOrientation(long /*int*/ hwnd, int orientation) {
	return false;
}
public static boolean setOrientation (Control control, int orientation) {
	return false;
}
}