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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2004 Novell, Inc.
//
// Authors:
// Peter Bartok pbartok@novell.com
//
//
// $Log: AccessibleObject.cs,v $
// Revision 1.3 2004/09/02 20:25:21 pbartok
// - Added missing methods
//
// Revision 1.2 2004/08/11 13:44:33 pbartok
// - Fixed to match ControlCollection rewrite
//
// Revision 1.1 2004/07/09 05:21:25 pbartok
// - Initial check-in
//
//
// NOT COMPLETE
using Accessibility;
using System.Drawing;
using System.Globalization;
using System.Reflection;
using System.Runtime.InteropServices;
namespace System.Windows.Forms {
public class AccessibleObject : MarshalByRefObject, IReflect, IAccessible {
#region Private Variables
private string name;
private string value;
private Control owner;
internal AccessibleRole role;
internal string default_action;
internal string description;
internal string help;
internal string keyboard_shortcut;
#endregion // Private Variables
#region Public Constructors
public AccessibleObject() {
this.owner=null;
this.value=null;
this.name=null;
this.role=AccessibleRole.Default;
this.default_action=null;
this.description=null;
this.help=null;
this.keyboard_shortcut=null;
}
#endregion // Public Constructors
#region Private Constructors
internal AccessibleObject(Control owner) : this () {
this.owner=owner;
}
#endregion // Private Constructors
#region Public Instance Properties
public virtual Rectangle Bounds {
get {
return Rectangle.Empty;
}
}
public virtual string DefaultAction {
get {
return default_action;
}
}
public virtual string Description {
get {
return description;
}
}
public virtual string Help {
get {
return help;
}
}
public virtual string KeyboardShortcut {
get {
return keyboard_shortcut;
}
}
public virtual string Name {
get {
return name;
}
set {
name=value;
}
}
public virtual AccessibleObject Parent {
get {
if ((owner!=null) && (owner.Parent!=null)) {
return owner.Parent.AccessibilityObject;
}
return null;
}
}
public virtual AccessibleRole Role {
get {
return role;
}
}
public virtual AccessibleStates State {
get {
AccessibleStates state=AccessibleStates.None;
if (owner!=null) {
if (owner.Focused) {
state |= AccessibleStates.Focused;
}
if (!owner.Visible) {
state |= AccessibleStates.Invisible;
}
}
return state;
}
}
public virtual string Value {
get {
return this.value;
}
set {
this.value=value;
}
}
#endregion // Public Instance Properties
#region Public Instance Methods
public virtual void DoDefaultAction() {
if (owner!=null) {
owner.DoDefaultAction();
}
}
public virtual AccessibleObject GetChild(int index) {
if (owner!=null) {
if (index<owner.child_controls.Count) {
return owner.child_controls[index].AccessibilityObject;
}
}
return null;
}
public virtual int GetChildCount() {
if (owner!=null) {
return owner.child_controls.Count;
}
return -1;
}
public virtual AccessibleObject GetFocused() {
Control result;
if (owner.has_focus) {
return owner.AccessibilityObject;
}
result = FindFocusControl(owner);
if (result != null) {
return result.AccessibilityObject;
}
return null;
}
[MonoTODO("Integrate help into accessibility system")]
public virtual int GetHelpTopic(out string FileName) {
FileName = null;
return -1;
}
public virtual AccessibleObject GetSelected() {
Control result;
if (owner.is_selected) {
return owner.AccessibilityObject;
}
result = FindSelectedControl(owner);
if (result != null) {
return result.AccessibilityObject;
}
return null;
}
public virtual AccessibleObject HitTest(int x, int y) {
Control result;
result = FindHittestControl(owner, x, y);
if (result != null) {
return result.AccessibilityObject;
}
return null;
}
public virtual AccessibleObject Navigate(AccessibleNavigation navdir) {
int index;
// I'm not throwing exceptions if an object doesn't exist in the specified direction
// Might not be too helpful to a blind dude trying to navigate. Instead we return
// our own object
if (owner.parent != null) {
index = owner.parent.child_controls.IndexOf(owner);
} else {
index = -1;
}
switch (navdir) {
// Spatial navigation; limited to siblings
case AccessibleNavigation.Up: {
if (owner.parent != null) {
for (int i=0; i<owner.parent.child_controls.Count; i++) {
if ((owner != owner.parent.child_controls[i]) && (owner.parent.child_controls[i].Top<owner.Top)) {
return owner.parent.child_controls[i].AccessibilityObject;
}
}
}
return owner.AccessibilityObject;
}
case AccessibleNavigation.Down: {
if (owner.parent != null) {
for (int i=0; i<owner.parent.child_controls.Count; i++) {
if ((owner != owner.parent.child_controls[i]) && (owner.parent.child_controls[i].Top>owner.Bottom)) {
return owner.parent.child_controls[i].AccessibilityObject;
}
}
}
return owner.AccessibilityObject;
}
case AccessibleNavigation.Left: {
if (owner.parent != null) {
for (int i=0; i<owner.parent.child_controls.Count; i++) {
if ((owner != owner.parent.child_controls[i]) && (owner.parent.child_controls[i].Left<owner.Left)) {
return owner.parent.child_controls[i].AccessibilityObject;
}
}
}
return owner.AccessibilityObject;
}
case AccessibleNavigation.Right: {
if (owner.parent != null) {
for (int i=0; i<owner.parent.child_controls.Count; i++) {
if ((owner != owner.parent.child_controls[i]) && (owner.parent.child_controls[i].Left>owner.Right)) {
return owner.parent.child_controls[i].AccessibilityObject;
}
}
}
return owner.AccessibilityObject;
}
// Logical navigation
case AccessibleNavigation.Next: {
if (owner.parent != null) {
if ((index+1)<owner.parent.child_controls.Count) {
return owner.parent.child_controls[index+1].AccessibilityObject;
} else {
return owner.parent.child_controls[0].AccessibilityObject;
}
} else {
return owner.AccessibilityObject;
}
}
case AccessibleNavigation.Previous: {
if (owner.parent != null) {
if (index>0) {
return owner.parent.child_controls[index-1].AccessibilityObject;
} else {
return owner.parent.child_controls[owner.parent.child_controls.Count-1].AccessibilityObject;
}
} else {
return owner.AccessibilityObject;
}
}
case AccessibleNavigation.FirstChild: {
if (owner.child_controls.Count>0) {
return owner.child_controls[0].AccessibilityObject;
} else {
return owner.AccessibilityObject;
}
}
case AccessibleNavigation.LastChild: {
if (owner.child_controls.Count>0) {
return owner.child_controls[owner.child_controls.Count-1].AccessibilityObject;
} else {
return owner.AccessibilityObject;
}
}
}
return owner.AccessibilityObject;
}
[MonoTODO("Finish Select when Control.Select is complete")]
public virtual void Select(AccessibleSelection flags) {
if ((flags & AccessibleSelection.TakeFocus) != 0){
owner.has_focus = true;
}
return;
}
#endregion // Public Instance Methods
#region Protected Instance Methods
protected void UseStdAccessibleObjects(IntPtr handle) {
}
protected void UseStdAccessibleObjects(IntPtr handle, int objid) {
UseStdAccessibleObjects(handle, 0);
}
#endregion // Protected Instance Methods
#region Internal Methods
internal static Control FindFocusControl(Control parent) {
Control child;
for (int i=0; i < parent.child_controls.Count; i++) {
child=parent.child_controls[i];
if (child.has_focus) {
return child;
}
if (child.child_controls.Count>0) {
Control result;
result = FindFocusControl(child);
if (result != null) {
return result;
}
}
}
return null;
}
internal static Control FindSelectedControl(Control parent) {
Control child;
for (int i=0; i < parent.child_controls.Count; i++) {
child=parent.child_controls[i];
if (child.has_focus) {
return child;
}
if (child.child_controls.Count>0) {
Control result;
result = FindSelectedControl(child);
if (result != null) {
return result;
}
}
}
return null;
}
internal static Control FindHittestControl(Control parent, int x, int y) {
Control child;
Point child_point;
Point hittest_point;
hittest_point = new Point(x, y);
child_point = parent.PointToClient(hittest_point);
if (parent.ClientRectangle.Contains(child_point)) {
return parent;
}
for (int i=0; i < parent.child_controls.Count; i++) {
child=parent.child_controls[i];
child_point = child.PointToClient(hittest_point);
if (child.ClientRectangle.Contains(child_point)) {
return child;
}
if (child.child_controls.Count>0) {
Control result;
result = FindHittestControl(child, x, y);
if (result != null) {
return result;
}
}
}
return null;
}
#endregion // Internal Methods
#region IReflection Methods and Properties
FieldInfo IReflect.GetField(String name, BindingFlags bindingAttr) {
throw new NotImplementedException();
}
FieldInfo[] IReflect.GetFields(BindingFlags bindingAttr) {
throw new NotImplementedException();
}
MemberInfo[] IReflect.GetMember(String name, BindingFlags bindingAttr) {
throw new NotImplementedException();
}
MemberInfo[] IReflect.GetMembers(BindingFlags bindingAttr) {
throw new NotImplementedException();
}
MethodInfo IReflect.GetMethod(String name, BindingFlags bindingAttr) {
throw new NotImplementedException();
}
MethodInfo IReflect.GetMethod(String name, BindingFlags bindingAttr, Binder binder, Type[] types, ParameterModifier[] modifiers) {
throw new NotImplementedException();
}
MethodInfo[] IReflect.GetMethods(BindingFlags bindingAttr) {
throw new NotImplementedException();
}
PropertyInfo IReflect.GetProperty(String name, BindingFlags bindingAttr) {
throw new NotImplementedException();
}
PropertyInfo IReflect.GetProperty(String name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers) {
throw new NotImplementedException();
}
PropertyInfo[] IReflect.GetProperties(BindingFlags bindingAttr) {
throw new NotImplementedException();
}
Object IReflect.InvokeMember(String name, BindingFlags invokeAttr, Binder binder, Object target, Object[] args, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParameters) {
throw new NotImplementedException();
}
Type IReflect.UnderlyingSystemType {
get {
throw new NotImplementedException();
}
}
#endregion // IReflection Methods and Properties
#region IAccessible Methods and Properties
void IAccessible.accDoDefaultAction(object childID) {
throw new NotImplementedException();
}
int IAccessible.accChildCount {
get {
throw new NotImplementedException();
}
}
object IAccessible.accFocus {
get {
throw new NotImplementedException();
}
}
object IAccessible.accHitTest(int xLeft, int yTop) {
throw new NotImplementedException();
}
void IAccessible.accLocation(out int pxLeft, out int pyTop, out int pcxWidth, out int pcyHeight, object childID) {
throw new NotImplementedException();
}
object IAccessible.accNavigate(int navDir, object childID) {
throw new NotImplementedException();
}
object IAccessible.accParent {
get {
throw new NotImplementedException();
}
}
void IAccessible.accSelect(int flagsSelect, object childID) {
throw new NotImplementedException();
}
object IAccessible.accSelection {
get {
throw new NotImplementedException();
}
}
object IAccessible.get_accChild(object childID) {
throw new NotImplementedException();
}
string IAccessible.get_accDefaultAction(object childID) {
throw new NotImplementedException();
}
string IAccessible.get_accDescription(object childID) {
throw new NotImplementedException();
}
string IAccessible.get_accHelp(object childID) {
throw new NotImplementedException();
}
int IAccessible.get_accHelpTopic(out string pszHelpFile,object childID) {
throw new NotImplementedException();
}
string IAccessible.get_accKeyboardShortcut(object childID) {
throw new NotImplementedException();
}
string IAccessible.get_accName(object childID) {
throw new NotImplementedException();
}
object IAccessible.get_accRole(object childID) {
throw new NotImplementedException();
}
object IAccessible.get_accState(object childID) {
throw new NotImplementedException();
}
string IAccessible.get_accValue(object childID) {
throw new NotImplementedException();
}
void IAccessible.set_accName(object childID, string newName) {
throw new NotImplementedException();
}
void IAccessible.set_accValue(object childID, string newValue) {
throw new NotImplementedException();
}
#endregion // IAccessible Methods and Properties
}
}
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