installlistener.java

来自「This is a resource based on j2me embedde」· Java 代码 · 共 104 行

/*
 *   
 *
 * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program 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.
 * 
 * This program 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 at /legal/license.txt).
 * 
 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions.
 */

package com.sun.midp.installer;

/** Enables a MIDlet to respond installation warnings and status updates. */
public interface InstallListener {
    /**
     * Called with the current state of the install so the user can be
     * asked to override the warning. To get the warning from the state
     * call {@link InstallState#getLastException()}. If false is returned,
     * the last exception in the state will be thrown and
     * {@link Installer#wasStopped()} will return true if called.
     *
     * @param state current state of the install.
     *
     * @return true if the user wants to continue, false to stop the install
     */
    public boolean warnUser(InstallState state);

    /**
     * Called with the current state of the install so the user can be
     * asked to confirm the jar download.
     * If false is returned, the an I/O exception thrown and
     * {@link Installer#wasStopped()} will return true if called.
     *
     * @param state current state of the install.
     *
     * @return true if the user wants to continue, false to stop the install
     */
    public boolean confirmJarDownload(InstallState state);

    /**
     * Called with the current status of the install. See
     * {@link Installer} for the status codes.
     *
     * @param status current status of the install.
     * @param state current state of the install.
     */
    public void updateStatus(int status, InstallState state);

    /**
     * Called with the current state of the install so the user can be
     * asked to confirm if the RMS data should be kept for new version of
     * an updated suite.
     * If false is returned, the an I/O exception thrown and
     * {@link Installer#wasStopped()} will return true if called.
     *
     * @param state current state of the install.
     *
     * @return true if the user wants to keep the RMS data for the next suite
     */
    public boolean keepRMS(InstallState state);

    /**
     * Called with the current state of the install so the user can be
     * asked to confirm the authentication path.
     * If false is returned, the an I/O exception thrown and
     * {@link Installer#wasStopped()} will return true if called.
     *
     * @param state current state of the install.
     *
     * @return true if the user wants to continue, false to stop the install
     */
    public boolean confirmAuthPath(InstallState state);

    /**
     * Called with the current state of the install and the URL where the
     * request is attempted to be redirected so the user can be asked
     * to confirm if he really wants to install from the new location.
     * If false is returned, the an I/O exception thrown and
     * {@link Installer#wasStopped()} will return true if called.
     *
     * @param state current state of the install.
     * @param newLocation new url of the resource to install.
     *
     * @return true if the user wants to continue, false to stop the install
     */
    public boolean confirmRedirect(InstallState state, String newLocation);
}