/* * Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.awt.im; import java.awt.Component;import java.awt.Rectangle;import java.awt.im.spi.InputMethod; /** * An input method adapter interfaces with the native input methods * on a host platform. In general, it looks to the input method * framework like a Java input method (that may support a few more * locales than a typical Java input method). However, since it * often has to work in a slightly hostile environment that's not * designed for easy integration into the Java input method * framework, it gets some special treatment that's not available * to Java input methods. * <p> * Licensees are free to modify this class as necessary to implement * their host input method adapters. * * @author JavaSoft International */ public abstract class InputMethodAdapter implements InputMethod {     private Component clientComponent;     void setClientComponent(Component client) {        clientComponent = client;    }     protected Component getClientComponent() {        return clientComponent;    }     protected boolean haveActiveClient() {        return clientComponent != null && clientComponent.getInputMethodRequests() != null;    }     /**     * Informs the input method adapter about the component that has the AWT     * focus if it's using the input context owning this adapter instance.     */    protected void setAWTFocussedComponent(Component component) {        // ignore - adapters can override if needed    }     /**     * Returns whether host input methods can support below-the-spot input.     * Returns false by default.     */    protected boolean supportsBelowTheSpot() {        return false;    }     /**     * Informs the input method adapter not to listen to the native events.     * This method is called when a Java input method is active.     */    protected void stopListening() {        // ignore - adapters can override if needed    }     /**     * Notifies client Window location or status changes     */    public void notifyClientWindowChange(Rectangle location) {    }     /**     * Starts reconvertion. An implementing host adapter has to override     * this method if it can support reconvert().     * @exception UnsupportedOperationException when the adapter does not override     * the method.     */    public void reconvert() {        throw new UnsupportedOperationException();    }     /**     * Disable the native input method. This method is provided for explicitly     * turning off the native IM. The native IM is not turned off     * when the native input method is deactivated. This method is     * always called on AWT EDT. See details in bug 6226489.     */    public abstract void disableInputMethod();      /**     * Returns a string with information about the native input method, or     * null.     */    public abstract String getNativeInputMethodInfo();}