1 /*

     2  * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package com.apple.eawt;

    27 

    28 import java.awt.Toolkit;

    29 import java.io.File;

    30 import java.util.*;

    31 

    32 import com.apple.eawt.AppEvent.*;

    33 

    34 @SuppressWarnings("deprecation")

    35 class _AppEventLegacyHandler implements AboutHandler, PreferencesHandler, _OpenAppHandler, AppReOpenedListener, OpenFilesHandler, PrintFilesHandler, QuitHandler {

    36     final _AppEventHandler parent;

    37     final Vector<ApplicationListener> legacyAppListeners = new Vector<ApplicationListener>();

    38     boolean blockLegacyAPI;

    39     boolean initializedParentDispatchers;

    40 

    41     _AppEventLegacyHandler(final _AppEventHandler parent) {

    42         this.parent = parent;

    43     }

    44 

    45     void blockLegacyAPI() {

    46         blockLegacyAPI = true;

    47     }

    48 

    49     void checkIfLegacyAPIBlocked() {

    50         if (!blockLegacyAPI) return;

    51         throw new IllegalStateException("Cannot add com.apple.eawt.ApplicationListener after installing an app event handler");

    52     }

    53 

    54     void addLegacyAppListener(final ApplicationListener listener) {

    55         checkIfLegacyAPIBlocked();

    56 

    57         if (!initializedParentDispatchers) {

    58             final _AppMenuBarHandler menuBarHandler = Application.getApplication().menuBarHandler;

    59             final boolean prefsMenuAlreadyExplicitlySet = menuBarHandler.prefsMenuItemExplicitlySet;

    60 

    61             parent.aboutDispatcher.setHandler(this);

    62             parent.preferencesDispatcher.setHandler(this);

    63             if (!prefsMenuAlreadyExplicitlySet) {

    64                 menuBarHandler.setPreferencesMenuItemVisible(false); // default behavior is not to have a preferences item

    65             }

    66             parent.openAppDispatcher.setHandler(this);

    67             parent.reOpenAppDispatcher.addListener(this);

    68             parent.openFilesDispatcher.setHandler(this);

    69             parent.printFilesDispatcher.setHandler(this);

    70             parent.quitDispatcher.setHandler(this);

    71 

    72             initializedParentDispatchers = true;

    73         }

    74 

    75         synchronized (legacyAppListeners) {

    76             legacyAppListeners.addElement(listener);

    77         }

    78     }

    79 

    80     public void removeLegacyAppListener(final ApplicationListener listener) {

    81         checkIfLegacyAPIBlocked();

    82 

    83         synchronized (legacyAppListeners) {

    84             legacyAppListeners.removeElement(listener);

    85         }

    86     }

    87 

    88     @Override

    89     public void handleAbout(final AboutEvent e) {

    90         final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit());

    91         sendEventToEachListenerUntilHandled(ae, new EventDispatcher() {

    92             public void dispatchEvent(final ApplicationListener listener) {

    93                 listener.handleAbout(ae);

    94             }

    95         });

    96 

    97         if (ae.isHandled()) return;

    98         parent.openCocoaAboutWindow();

    99     }

   100 

   101     @Override

   102     public void handlePreferences(final PreferencesEvent e) {

   103         final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit());

   104         sendEventToEachListenerUntilHandled(ae, new EventDispatcher() {

   105             public void dispatchEvent(final ApplicationListener listener) {

   106                 listener.handlePreferences(ae);

   107             }

   108         });

   109     }

   110 

   111     @Override

   112     public void handleOpenApp() {

   113         final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit());

   114         sendEventToEachListenerUntilHandled(ae, new EventDispatcher() {

   115             public void dispatchEvent(final ApplicationListener listener) {

   116                 listener.handleOpenApplication(ae);

   117             }

   118         });

   119     }

   120 

   121     @Override

   122     public void appReOpened(final AppReOpenedEvent e) {

   123         final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit());

   124         sendEventToEachListenerUntilHandled(ae, new EventDispatcher() {

   125             public void dispatchEvent(final ApplicationListener listener) {

   126                 listener.handleReOpenApplication(ae);

   127             }

   128         });

   129     }

   130 

   131     @Override

   132     public void openFiles(final OpenFilesEvent e) {

   133         final List<File> files = e.getFiles();

   134         for (final File file : files) { // legacy ApplicationListeners only understood one file at a time

   135             final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit(), file.getAbsolutePath());

   136             sendEventToEachListenerUntilHandled(ae, new EventDispatcher() {

   137                 public void dispatchEvent(final ApplicationListener listener) {

   138                     listener.handleOpenFile(ae);

   139                 }

   140             });

   141         }

   142     }

   143 

   144     @Override

   145     public void printFiles(PrintFilesEvent e) {

   146         final List<File> files = e.getFiles();

   147         for (final File file : files) { // legacy ApplicationListeners only understood one file at a time

   148             final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit(), file.getAbsolutePath());

   149             sendEventToEachListenerUntilHandled(ae, new EventDispatcher() {

   150                 public void dispatchEvent(final ApplicationListener listener) {

   151                     listener.handlePrintFile(ae);

   152                 }

   153             });

   154         }

   155     }

   156 

   157     @Override

   158     public void handleQuitRequestWith(final QuitEvent e, final QuitResponse response) {

   159         final ApplicationEvent ae = new ApplicationEvent(Toolkit.getDefaultToolkit());

   160         sendEventToEachListenerUntilHandled(ae, new EventDispatcher() {

   161             public void dispatchEvent(final ApplicationListener listener) {

   162                 listener.handleQuit(ae);

   163             }

   164         });

   165 

   166         if (ae.isHandled()) {

   167             parent.performQuit();

   168         } else {

   169             parent.cancelQuit();

   170         }

   171     }

   172 

   173     interface EventDispatcher {

   174         void dispatchEvent(final ApplicationListener listener);

   175     }

   176 

   177     // helper that cycles through the loop and aborts if the event is handled, or there are no listeners

   178     void sendEventToEachListenerUntilHandled(final ApplicationEvent event, final EventDispatcher dispatcher) {

   179         synchronized (legacyAppListeners) {

   180             if (legacyAppListeners.size() == 0) return;

   181 

   182             final Enumeration<ApplicationListener> e = legacyAppListeners.elements();

   183             while (e.hasMoreElements() && !event.isHandled()) {

   184                 dispatcher.dispatchEvent(e.nextElement());

   185             }

   186         }

   187     }

   188 }