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/*
* Copyright (c) 2018, Red Hat, Inc.
* Copyright (c) 2018, 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 org.GNOME.Accessibility;
import javax.accessibility.*;
import java.util.Locale;
import javax.swing.JMenuItem;
import javax.swing.KeyStroke;
import java.awt.event.KeyEvent;
import java.awt.event.InputEvent;
/**
* AtkObject:
* That class is used to wrap AccessibleContext Java object
* to avoid the concurrency of AWT objects.
* @autor Giuseppe Capaldo
*/
public class AtkObject{
public static final int INTERFACE_ACTION = 0x00000001;
public static final int INTERFACE_COMPONENT = 0x00000002;
public static final int INTERFACE_DOCUMENT = 0x00000004;
public static final int INTERFACE_EDITABLE_TEXT = 0x00000008;
public static final int INTERFACE_HYPERLINK = 0x00000010;
public static final int INTERFACE_HYPERTEXT = 0x00000020;
public static final int INTERFACE_IMAGE = 0x00000040;
public static final int INTERFACE_SELECTION = 0x00000080;
public static final int INTERFACE_STREAMABLE_CONTENT = 0x00000100;
public static final int INTERFACE_TABLE = 0x00000200;
public static final int INTERFACE_TABLE_CELL = 0x00000400;
public static final int INTERFACE_TEXT = 0x00000800;
public static final int INTERFACE_VALUE = 0x00001000;
public static int getTFlagFromObj(Object o){
return AtkUtil.invokeInSwing( () -> {
int flags = 0;
AccessibleContext ac;
if (o instanceof AccessibleContext)
ac = (AccessibleContext) o;
else if (o instanceof Accessible)
ac = ( (Accessible) o).getAccessibleContext();
else
return flags;
if (ac.getAccessibleAction() != null)
flags |= AtkObject.INTERFACE_ACTION;
if (ac.getAccessibleComponent() != null)
flags |= AtkObject.INTERFACE_COMPONENT;
AccessibleText text = ac.getAccessibleText();
if (text != null){
flags |= AtkObject.INTERFACE_TEXT;
if (text instanceof AccessibleHypertext)
flags |= AtkObject.INTERFACE_HYPERTEXT;
if (ac.getAccessibleEditableText() != null)
flags |= AtkObject.INTERFACE_EDITABLE_TEXT;
}
if (ac.getAccessibleIcon() != null)
flags |= AtkObject.INTERFACE_IMAGE;
if (ac.getAccessibleSelection() != null)
flags |= AtkObject.INTERFACE_SELECTION;
AccessibleTable table = ac.getAccessibleTable();
if (table != null){
flags |= AtkObject.INTERFACE_TABLE;
}
Accessible parent = ac.getAccessibleParent();
if (parent != null){
AccessibleContext pc = parent.getAccessibleContext();
if (pc != null){
table = pc.getAccessibleTable();
// Unfortunately without the AccessibleExtendedTable interface
// we can't determine the column/row of this accessible in the
// table
if (table != null && table instanceof AccessibleExtendedTable){
flags |= AtkObject.INTERFACE_TABLE_CELL;
}
}
}
if (ac.getAccessibleValue() != null)
flags |= AtkObject.INTERFACE_VALUE;
return flags;
}, 0);
}
public static AccessibleContext getAccessibleParent(AccessibleContext ac){
return AtkUtil.invokeInSwing( () -> {
Accessible father = ac.getAccessibleParent();
if (father != null)
return father.getAccessibleContext();
else
return null;
}, null);
}
public static void setAccessibleParent(AccessibleContext ac, AccessibleContext pa){
AtkUtil.invokeInSwing( () -> {
if (pa instanceof Accessible){
Accessible father = (Accessible) pa;
ac.setAccessibleParent(father);
}
} );
}
public static String getAccessibleName(AccessibleContext ac) {
return AtkUtil.invokeInSwing(() -> {
String accessibleName = ac.getAccessibleName();
if (accessibleName == null) {
return null;
}
final String acceleratorText = getAcceleratorText(ac);
if (!acceleratorText.isEmpty()) {
return accessibleName + " " + acceleratorText;
}
return accessibleName;
}, "");
}
/**
* Returns the JMenuItem accelerator. Similar implementation is used on
* macOS, see CAccessibility.getAcceleratorText(AccessibleContext) in OpenJDK, and
* on Windows, see AccessBridge.getAccelerator(AccessibleContext) in OpenJDK.
*/
private static String getAcceleratorText(AccessibleContext ac) {
String accText = "";
Accessible parent = ac.getAccessibleParent();
if (parent != null) {
int indexInParent = ac.getAccessibleIndexInParent();
Accessible child = parent.getAccessibleContext()
.getAccessibleChild(indexInParent);
if (child instanceof JMenuItem) {
JMenuItem menuItem = (JMenuItem)child;
KeyStroke keyStroke = menuItem.getAccelerator();
if (keyStroke != null) {
int modifiers = keyStroke.getModifiers();
String modifiersText = modifiers > 0 ? InputEvent.getModifiersExText(modifiers) : "";
int keyCode = keyStroke.getKeyCode();
String keyCodeText = keyCode != 0 ? KeyEvent.getKeyText(keyCode) : String.valueOf(keyStroke.getKeyChar());
accText += modifiersText;
if (!modifiersText.isEmpty() && !keyCodeText.isEmpty()) {
accText += "+";
}
accText += keyCodeText;
}
}
}
return accText;
}
public static void setAccessibleName(AccessibleContext ac, String name){
AtkUtil.invokeInSwing( () -> { ac.setAccessibleName(name); } );
}
public static String getAccessibleDescription(AccessibleContext ac){
return AtkUtil.invokeInSwing( () -> { return ac.getAccessibleDescription(); }, "");
}
public static void setAccessibleDescription(AccessibleContext ac, String description){
AtkUtil.invokeInSwing( () -> { ac.setAccessibleDescription(description); } );
}
public static int getAccessibleChildrenCount(AccessibleContext ac){
return AtkUtil.invokeInSwing( () -> { return ac.getAccessibleChildrenCount(); }, 0);
}
public static int getAccessibleIndexInParent(AccessibleContext ac){
return AtkUtil.invokeInSwing( () -> { return ac.getAccessibleIndexInParent(); }, -1);
}
public static AccessibleRole getAccessibleRole(AccessibleContext ac){
return AtkUtil.invokeInSwing( () -> { return ac.getAccessibleRole(); }, AccessibleRole.UNKNOWN);
}
public static boolean equalsIgnoreCaseLocaleWithRole(AccessibleRole role){
String displayString = role.toDisplayString(Locale.US);
return displayString.equalsIgnoreCase("paragraph");
}
public static AccessibleState[] getArrayAccessibleState(AccessibleContext ac){
return AtkUtil.invokeInSwing( () -> {
AccessibleStateSet stateSet = ac.getAccessibleStateSet();
if (stateSet == null)
return null;
else
return stateSet.toArray();
}, null);
}
public static String getLocale(AccessibleContext ac){
return AtkUtil.invokeInSwing( () -> {
Locale l = ac.getLocale();
String locale = l.getLanguage();
String country = l.getCountry();
String script = l.getScript();
String variant = l.getVariant();
if (country.length() != 0) {
locale += "_" + country;
}
if (script.length() != 0) {
locale += "@" + script;
}
if (variant.length() != 0) {
locale += "@" + variant;
}
return locale;
}, null);
}
public static class WrapKeyAndTarget{
public String key;
public AccessibleContext[] relations;
public WrapKeyAndTarget(String key, AccessibleContext[] relations){
this.key = key;
this.relations = relations;
}
}
public static WrapKeyAndTarget[] getArrayAccessibleRelation(AccessibleContext ac){
WrapKeyAndTarget[] d = new WrapKeyAndTarget[0];
return AtkUtil.invokeInSwing( () -> {
AccessibleRelationSet relationSet = ac.getAccessibleRelationSet();
if (relationSet == null)
return d;
else {
AccessibleRelation[] array = relationSet.toArray();
WrapKeyAndTarget[] result = new WrapKeyAndTarget[array.length];
for(int i = 0; i < array.length; i++) {
String key = array[i].getKey();
Object[] objs = array[i].getTarget();
AccessibleContext[] contexts = new AccessibleContext[objs.length];
for(int j = 0; j < objs.length; j++) {
if (objs[i] instanceof Accessible)
contexts[i] = ( (Accessible) objs[i]).getAccessibleContext();
else
contexts[i] = null;
}
result[i] = new WrapKeyAndTarget(key, contexts);
}
return result;
}
}, d);
}
public static AccessibleContext getAccessibleChild(AccessibleContext ac, int i){
return AtkUtil.invokeInSwing( () -> {
Accessible child = ac.getAccessibleChild(i);
if (child == null)
return null;
else
return child.getAccessibleContext();
}, null);
}
public static int hashCode(AccessibleContext ac){
return AtkUtil.invokeInSwing( () -> { return ac.hashCode(); }, 0);
}
}
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