| /* |
| * Copyright (c) 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 java.awt; |
| |
| import java.awt.event.*; |
| |
| import sun.awt.AppContext; |
| |
| abstract class ModalEventFilter implements EventFilter { |
| |
| protected Dialog modalDialog; |
| protected boolean disabled; |
| |
| protected ModalEventFilter(Dialog modalDialog) { |
| this.modalDialog = modalDialog; |
| disabled = false; |
| } |
| |
| Dialog getModalDialog() { |
| return modalDialog; |
| } |
| |
| public FilterAction acceptEvent(AWTEvent event) { |
| if (disabled || !modalDialog.isVisible()) { |
| return FilterAction.ACCEPT; |
| } |
| int eventID = event.getID(); |
| if ((eventID >= MouseEvent.MOUSE_FIRST && |
| eventID <= MouseEvent.MOUSE_LAST) || |
| (eventID >= ActionEvent.ACTION_FIRST && |
| eventID <= ActionEvent.ACTION_LAST) || |
| eventID == WindowEvent.WINDOW_CLOSING) |
| { |
| Object o = event.getSource(); |
| if (o instanceof sun.awt.ModalExclude) { |
| // Exclude this object from modality and |
| // continue to pump it's events. |
| } else if (o instanceof Component) { |
| Component c = (Component)o; |
| while ((c != null) && !(c instanceof Window)) { |
| c = c.getParent_NoClientCode(); |
| } |
| if (c != null) { |
| return acceptWindow((Window)c); |
| } |
| } |
| } |
| return FilterAction.ACCEPT; |
| } |
| |
| protected abstract FilterAction acceptWindow(Window w); |
| |
| // When a modal dialog is hidden its modal filter may not be deleted from |
| // EventDispatchThread event filters immediately, so we need to mark the filter |
| // as disabled to prevent it from working. Simple checking for visibility of |
| // the modalDialog is not enough, as it can be hidden and then shown again |
| // with a new event pump and a new filter |
| void disable() { |
| disabled = true; |
| } |
| |
| int compareTo(ModalEventFilter another) { |
| Dialog anotherDialog = another.getModalDialog(); |
| // check if modalDialog is from anotherDialog's hierarchy |
| // or vice versa |
| Component c = modalDialog; |
| while (c != null) { |
| if (c == anotherDialog) { |
| return 1; |
| } |
| c = c.getParent_NoClientCode(); |
| } |
| c = anotherDialog; |
| while (c != null) { |
| if (c == modalDialog) { |
| return -1; |
| } |
| c = c.getParent_NoClientCode(); |
| } |
| // check if one dialog blocks (directly or indirectly) another |
| Dialog blocker = modalDialog.getModalBlocker(); |
| while (blocker != null) { |
| if (blocker == anotherDialog) { |
| return -1; |
| } |
| blocker = blocker.getModalBlocker(); |
| } |
| blocker = anotherDialog.getModalBlocker(); |
| while (blocker != null) { |
| if (blocker == modalDialog) { |
| return 1; |
| } |
| blocker = blocker.getModalBlocker(); |
| } |
| // compare modality types |
| return modalDialog.getModalityType().compareTo(anotherDialog.getModalityType()); |
| } |
| |
| static ModalEventFilter createFilterForDialog(Dialog modalDialog) { |
| switch (modalDialog.getModalityType()) { |
| case DOCUMENT_MODAL: return new DocumentModalEventFilter(modalDialog); |
| case APPLICATION_MODAL: return new ApplicationModalEventFilter(modalDialog); |
| case TOOLKIT_MODAL: return new ToolkitModalEventFilter(modalDialog); |
| } |
| return null; |
| } |
| |
| private static class ToolkitModalEventFilter extends ModalEventFilter { |
| |
| private AppContext appContext; |
| |
| ToolkitModalEventFilter(Dialog modalDialog) { |
| super(modalDialog); |
| appContext = modalDialog.appContext; |
| } |
| |
| protected FilterAction acceptWindow(Window w) { |
| if (w.isModalExcluded(Dialog.ModalExclusionType.TOOLKIT_EXCLUDE)) { |
| return FilterAction.ACCEPT; |
| } |
| if (w.appContext != appContext) { |
| return FilterAction.REJECT; |
| } |
| while (w != null) { |
| if (w == modalDialog) { |
| return FilterAction.ACCEPT_IMMEDIATELY; |
| } |
| w = w.getOwner(); |
| } |
| return FilterAction.REJECT; |
| } |
| } |
| |
| private static class ApplicationModalEventFilter extends ModalEventFilter { |
| |
| private AppContext appContext; |
| |
| ApplicationModalEventFilter(Dialog modalDialog) { |
| super(modalDialog); |
| appContext = modalDialog.appContext; |
| } |
| |
| protected FilterAction acceptWindow(Window w) { |
| if (w.isModalExcluded(Dialog.ModalExclusionType.APPLICATION_EXCLUDE)) { |
| return FilterAction.ACCEPT; |
| } |
| if (w.appContext == appContext) { |
| while (w != null) { |
| if (w == modalDialog) { |
| return FilterAction.ACCEPT_IMMEDIATELY; |
| } |
| w = w.getOwner(); |
| } |
| return FilterAction.REJECT; |
| } |
| return FilterAction.ACCEPT; |
| } |
| } |
| |
| private static class DocumentModalEventFilter extends ModalEventFilter { |
| |
| private Window documentRoot; |
| |
| DocumentModalEventFilter(Dialog modalDialog) { |
| super(modalDialog); |
| documentRoot = modalDialog.getDocumentRoot(); |
| } |
| |
| protected FilterAction acceptWindow(Window w) { |
| // application- and toolkit-excluded windows are blocked by |
| // document-modal dialogs from their child hierarchy |
| if (w.isModalExcluded(Dialog.ModalExclusionType.APPLICATION_EXCLUDE)) { |
| Window w1 = modalDialog.getOwner(); |
| while (w1 != null) { |
| if (w1 == w) { |
| return FilterAction.REJECT; |
| } |
| w1 = w1.getOwner(); |
| } |
| return FilterAction.ACCEPT; |
| } |
| while (w != null) { |
| if (w == modalDialog) { |
| return FilterAction.ACCEPT_IMMEDIATELY; |
| } |
| if (w == documentRoot) { |
| return FilterAction.REJECT; |
| } |
| w = w.getOwner(); |
| } |
| return FilterAction.ACCEPT; |
| } |
| } |
| } |