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/*
* Java ATK Wrapper for GNOME
* Copyright (C) 2009 Sun Microsystems Inc.
* Copyright (C) 2015 Magdalen Berns <m.berns@thismagpie.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.GNOME.Accessibility;
import javax.accessibility.*;
import java.awt.Point;
import java.awt.Rectangle;
import java.lang.ref.WeakReference;
public class AtkComponent {
WeakReference<AccessibleContext> _ac;
WeakReference<AccessibleComponent> _acc_component;
public AtkComponent (AccessibleContext ac) {
super();
this._ac = new WeakReference<AccessibleContext>(ac);
this._acc_component = new WeakReference<AccessibleComponent>(ac.getAccessibleComponent());
}
public static AtkComponent createAtkComponent(AccessibleContext ac){
return AtkUtil.invokeInSwing ( () -> { return new AtkComponent(ac); }, null);
}
static public Point getWindowLocation(AccessibleContext ac) {
while (ac != null) {
AccessibleRole role = ac.getAccessibleRole();
if (role == AccessibleRole.DIALOG ||
role == AccessibleRole.FRAME ||
role == AccessibleRole.WINDOW) {
AccessibleComponent acc_comp = ac.getAccessibleComponent();
if (acc_comp == null)
return null;
return acc_comp.getLocationOnScreen();
}
Accessible parent = ac.getAccessibleParent();
if (parent == null)
return null;
ac = parent.getAccessibleContext();
}
return null;
}
// Return the position of the object relative to the coordinate type
public static Point getComponentOrigin(AccessibleContext ac, AccessibleComponent acc_component, int coord_type) {
if (coord_type == AtkCoordType.SCREEN)
return acc_component.getLocationOnScreen();
if (coord_type == AtkCoordType.WINDOW)
{
Point win_p = getWindowLocation(ac);
if (win_p == null)
return null;
Point p = acc_component.getLocationOnScreen();
if (p == null)
return null;
p.translate(-win_p.x, -win_p.y);
return p;
}
if (coord_type == AtkCoordType.PARENT)
return acc_component.getLocation();
return null;
}
// Return the position of the parent relative to the coordinate type
public static Point getParentOrigin(AccessibleContext ac, AccessibleComponent acc_component, int coord_type) {
if (coord_type == AtkCoordType.PARENT)
return new Point(0, 0);
Accessible parent = ac.getAccessibleParent();
if (parent == null)
return null;
AccessibleContext parent_ac = parent.getAccessibleContext();
if (parent_ac == null)
return null;
AccessibleComponent parent_component = parent_ac.getAccessibleComponent();
if (parent_component == null)
return null;
if (coord_type == AtkCoordType.SCREEN) {
return parent_component.getLocationOnScreen();
}
if (coord_type == AtkCoordType.WINDOW) {
Point window_origin = getWindowLocation(ac);
if (window_origin == null)
return null;
Point parent_origin = parent_component.getLocationOnScreen();
if (parent_origin == null)
return null;
parent_origin.translate(-window_origin.x, -window_origin.y);
return parent_origin;
}
return null;
}
public boolean contains (int x, int y, int coord_type) {
AccessibleContext ac = _ac.get();
if (ac == null)
return false;
AccessibleComponent acc_component = _acc_component.get();
if (acc_component == null)
return false;
return AtkUtil.invokeInSwing ( () -> {
if(acc_component.isVisible()){
Point p = getComponentOrigin(ac, acc_component, coord_type);
if (p == null)
return false;
return acc_component.contains(new Point(x - p.x, y - p.y));
}
return false;
}, false);
}
public AccessibleContext get_accessible_at_point (int x, int y, int coord_type) {
AccessibleContext ac = _ac.get();
if (ac == null)
return null;
AccessibleComponent acc_component = _acc_component.get();
if (acc_component == null)
return null;
return AtkUtil.invokeInSwing ( () -> {
if(acc_component.isVisible()){
Point p = getComponentOrigin(ac, acc_component, coord_type);
if (p == null)
return null;
Accessible accessible = acc_component.getAccessibleAt(new Point(x - p.x, y - p.y));
if (accessible == null)
return null;
return accessible.getAccessibleContext();
}
return null;
}, null);
}
public boolean grab_focus () {
AccessibleComponent acc_component = _acc_component.get();
if (acc_component == null)
return false;
return AtkUtil.invokeInSwing ( () -> {
if (!acc_component.isFocusTraversable())
return false;
acc_component.requestFocus();
return true;
}, false);
}
public boolean set_extents(int x, int y, int width, int height, int coord_type) {
AccessibleContext ac = _ac.get();
if (ac == null)
return false;
AccessibleComponent acc_component = _acc_component.get();
if (acc_component == null)
return false;
return AtkUtil.invokeInSwing( () -> {
if(acc_component.isVisible()){
Point p = getParentOrigin(ac, acc_component, coord_type);
if (p == null)
return false;
acc_component.setBounds(new Rectangle(x - p.x, y - p.y, width, height));
return true;
}
return false;
}, false);
}
public Rectangle get_extents(int coord_type) {
AccessibleContext ac = _ac.get();
if (ac == null)
return null;
AccessibleComponent acc_component = _acc_component.get();
if (acc_component == null)
return null;
return AtkUtil.invokeInSwing ( () -> {
if(acc_component.isVisible()){
Rectangle rect = acc_component.getBounds();
if (rect == null)
return null;
Point p = getParentOrigin(ac, acc_component, coord_type);
if (p == null)
return null;
rect.x += p.x;
rect.y += p.y;
return rect;
}
return null;
},null);
}
public int get_layer () {
AccessibleContext ac = _ac.get();
if (ac == null)
return AtkLayer.INVALID;
return AtkUtil.invokeInSwing ( () -> {
AccessibleRole role = ac.getAccessibleRole();
if (role == AccessibleRole.MENU ||
role == AccessibleRole.MENU_ITEM ||
role == AccessibleRole.POPUP_MENU ) {
return AtkLayer.POPUP;
}
if (role == AccessibleRole.INTERNAL_FRAME) {
return AtkLayer.MDI;
}
if (role == AccessibleRole.GLASS_PANE) {
return AtkLayer.OVERLAY;
}
if (role == AccessibleRole.CANVAS ||
role == AccessibleRole.ROOT_PANE ||
role == AccessibleRole.LAYERED_PANE ) {
return AtkLayer.CANVAS;
}
if (role == AccessibleRole.WINDOW) {
return AtkLayer.WINDOW;
}
return AtkLayer.WIDGET;
}, AtkLayer.INVALID);
}
}
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