561 lines
14 KiB
C#
561 lines
14 KiB
C#
// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (c) 2004-2006 Novell, Inc.
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//
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// Authors:
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// Peter Dennis Bartok pbartok@novell.com
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//
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// NOT COMPLETE
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using Accessibility;
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using System.Drawing;
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using System.Globalization;
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using System.Reflection;
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using System.Runtime.InteropServices;
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namespace System.Windows.Forms {
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[ComVisible(true)]
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public class AccessibleObject : StandardOleMarshalObject, IReflect, IAccessible {
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#region Private Variables
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internal string name;
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internal string value;
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internal Control owner;
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internal AccessibleRole role;
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internal AccessibleStates state;
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internal string default_action;
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internal string description;
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internal string help;
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internal string keyboard_shortcut;
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#endregion // Private Variables
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#region Public Constructors
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public AccessibleObject() {
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this.owner = null;
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this.value = null;
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this.name = null;
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this.role = AccessibleRole.Default;
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this.default_action = null;
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this.description = null;
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this.help = null;
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this.keyboard_shortcut = null;
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this.state = AccessibleStates.None;
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}
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#endregion // Public Constructors
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#region Private Constructors
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internal AccessibleObject(Control owner) : this () {
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this.owner=owner;
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}
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#endregion // Private Constructors
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#region Public Instance Properties
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public virtual Rectangle Bounds {
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get {
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return owner.Bounds;
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}
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}
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public virtual string DefaultAction {
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get {
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return default_action;
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}
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}
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public virtual string Description {
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get {
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return description;
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}
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}
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public virtual string Help {
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get {
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return help;
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}
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}
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public virtual string KeyboardShortcut {
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get {
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return keyboard_shortcut;
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}
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}
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public virtual string Name {
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get {
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return name;
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}
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set {
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name=value;
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}
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}
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public virtual AccessibleObject Parent {
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get {
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if ((owner!=null) && (owner.Parent!=null)) {
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return owner.Parent.AccessibilityObject;
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}
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return null;
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}
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}
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public virtual AccessibleRole Role {
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get {
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return role;
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}
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}
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public virtual AccessibleStates State {
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get {
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#if not
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if (owner!=null) {
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if (owner.Focused) {
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state |= AccessibleStates.Focused;
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}
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if (!owner.Visible) {
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state |= AccessibleStates.Invisible;
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}
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}
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#endif
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return state;
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}
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}
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public virtual string Value {
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get {
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return this.value;
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}
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set {
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this.value=value;
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}
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}
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#endregion // Public Instance Properties
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#region Public Instance Methods
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public virtual void DoDefaultAction() {
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if (owner!=null) {
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owner.DoDefaultAction();
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}
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}
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public virtual AccessibleObject GetChild(int index) {
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if (owner!=null) {
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if (index<owner.Controls.Count) {
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return owner.Controls[index].AccessibilityObject;
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}
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}
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return null;
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}
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public virtual int GetChildCount() {
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if (owner!=null) {
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return owner.Controls.Count;
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}
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return -1;
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}
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public virtual AccessibleObject GetFocused() {
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if (owner.has_focus) {
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return owner.AccessibilityObject;
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}
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return FindFocusControl(owner);
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}
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public virtual int GetHelpTopic (out string fileName)
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{
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fileName = null;
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return -1;
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}
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public virtual AccessibleObject GetSelected() {
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if ((state & AccessibleStates.Selected) != 0) {
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return this;
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}
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return FindSelectedControl(owner);
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}
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public virtual AccessibleObject HitTest(int x, int y) {
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Control result;
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result = FindHittestControl(owner, x, y);
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if (result != null) {
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return result.AccessibilityObject;
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}
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return null;
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}
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public virtual AccessibleObject Navigate(AccessibleNavigation navdir) {
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int index;
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// I'm not throwing exceptions if an object doesn't exist in the specified direction
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// Might not be too helpful to a blind dude trying to navigate. Instead we return
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// our own object
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if (owner.Parent != null) {
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index = owner.Parent.Controls.IndexOf(owner);
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} else {
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index = -1;
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}
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switch (navdir) {
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// Spatial navigation; limited to siblings
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case AccessibleNavigation.Up: {
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if (owner.Parent != null) {
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for (int i=0; i<owner.Parent.Controls.Count; i++) {
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if ((owner != owner.Parent.Controls[i]) && (owner.Parent.Controls[i].Top<owner.Top)) {
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return owner.Parent.Controls[i].AccessibilityObject;
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}
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}
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}
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return owner.AccessibilityObject;
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}
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case AccessibleNavigation.Down: {
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if (owner.Parent != null) {
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for (int i=0; i<owner.Parent.Controls.Count; i++) {
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if ((owner != owner.Parent.Controls[i]) && (owner.Parent.Controls[i].Top>owner.Bottom)) {
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return owner.Parent.Controls[i].AccessibilityObject;
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}
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}
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}
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return owner.AccessibilityObject;
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}
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case AccessibleNavigation.Left: {
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if (owner.Parent != null) {
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for (int i=0; i<owner.Parent.Controls.Count; i++) {
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if ((owner != owner.Parent.Controls[i]) && (owner.Parent.Controls[i].Left<owner.Left)) {
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return owner.Parent.Controls[i].AccessibilityObject;
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}
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}
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}
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return owner.AccessibilityObject;
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}
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case AccessibleNavigation.Right: {
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if (owner.Parent != null) {
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for (int i=0; i<owner.Parent.Controls.Count; i++) {
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if ((owner != owner.Parent.Controls[i]) && (owner.Parent.Controls[i].Left>owner.Right)) {
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return owner.Parent.Controls[i].AccessibilityObject;
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}
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}
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}
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return owner.AccessibilityObject;
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}
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// Logical navigation
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case AccessibleNavigation.Next: {
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if (owner.Parent != null) {
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if ((index+1)<owner.Parent.Controls.Count) {
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return owner.Parent.Controls[index+1].AccessibilityObject;
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} else {
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return owner.Parent.Controls[0].AccessibilityObject;
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}
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} else {
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return owner.AccessibilityObject;
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}
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}
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case AccessibleNavigation.Previous: {
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if (owner.Parent != null) {
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if (index>0) {
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return owner.Parent.Controls[index-1].AccessibilityObject;
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} else {
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return owner.Parent.Controls[owner.Parent.Controls.Count-1].AccessibilityObject;
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}
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} else {
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return owner.AccessibilityObject;
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}
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}
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case AccessibleNavigation.FirstChild: {
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if (owner.Controls.Count>0) {
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return owner.Controls[0].AccessibilityObject;
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} else {
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return owner.AccessibilityObject;
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}
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}
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case AccessibleNavigation.LastChild: {
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if (owner.Controls.Count>0) {
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return owner.Controls[owner.Controls.Count-1].AccessibilityObject;
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} else {
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return owner.AccessibilityObject;
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}
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}
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}
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return owner.AccessibilityObject;
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}
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public virtual void Select(AccessibleSelection flags) {
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if ((flags & AccessibleSelection.TakeFocus) != 0){
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owner.Focus();
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}
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return;
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}
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#endregion // Public Instance Methods
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#region Protected Instance Methods
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protected void UseStdAccessibleObjects(IntPtr handle) {
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}
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protected void UseStdAccessibleObjects(IntPtr handle, int objid) {
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UseStdAccessibleObjects(handle, 0);
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}
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#endregion // Protected Instance Methods
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#region Internal Methods
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internal static AccessibleObject FindFocusControl(Control parent) {
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Control child;
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if (parent != null) {
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for (int i=0; i < parent.Controls.Count; i++) {
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child = parent.Controls[i];
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if ((child.AccessibilityObject.state & AccessibleStates.Focused) != 0) {
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return child.AccessibilityObject;
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}
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if (child.Controls.Count>0) {
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AccessibleObject result;
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result = FindFocusControl(child);
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if (result != null) {
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return result;
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}
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}
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}
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}
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return null;
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}
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internal static AccessibleObject FindSelectedControl(Control parent) {
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Control child;
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if (parent != null) {
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for (int i=0; i < parent.Controls.Count; i++) {
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child = parent.Controls[i];
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if ((child.AccessibilityObject.state & AccessibleStates.Selected) != 0) {
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return child.AccessibilityObject;
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}
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if (child.Controls.Count>0) {
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AccessibleObject result;
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result = FindSelectedControl(child);
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if (result != null) {
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return result;
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}
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}
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}
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}
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return null;
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}
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internal static Control FindHittestControl(Control parent, int x, int y) {
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Control child;
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Point child_point;
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Point hittest_point;
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hittest_point = new Point(x, y);
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child_point = parent.PointToClient(hittest_point);
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if (parent.ClientRectangle.Contains(child_point)) {
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return parent;
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}
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for (int i=0; i < parent.Controls.Count; i++) {
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child=parent.Controls[i];
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child_point = child.PointToClient(hittest_point);
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if (child.ClientRectangle.Contains(child_point)) {
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return child;
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}
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if (child.Controls.Count>0) {
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Control result;
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result = FindHittestControl(child, x, y);
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if (result != null) {
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return result;
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}
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}
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}
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return null;
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}
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#endregion // Internal Methods
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#region IReflection Methods and Properties
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FieldInfo IReflect.GetField(String name, BindingFlags bindingAttr) {
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throw new NotImplementedException();
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}
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FieldInfo[] IReflect.GetFields(BindingFlags bindingAttr) {
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throw new NotImplementedException();
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}
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MemberInfo[] IReflect.GetMember(String name, BindingFlags bindingAttr) {
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throw new NotImplementedException();
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}
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MemberInfo[] IReflect.GetMembers(BindingFlags bindingAttr) {
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throw new NotImplementedException();
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}
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MethodInfo IReflect.GetMethod(String name, BindingFlags bindingAttr) {
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throw new NotImplementedException();
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}
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MethodInfo IReflect.GetMethod(String name, BindingFlags bindingAttr, Binder binder, Type[] types, ParameterModifier[] modifiers) {
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throw new NotImplementedException();
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}
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MethodInfo[] IReflect.GetMethods(BindingFlags bindingAttr) {
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throw new NotImplementedException();
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}
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PropertyInfo IReflect.GetProperty(String name, BindingFlags bindingAttr) {
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throw new NotImplementedException();
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}
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PropertyInfo IReflect.GetProperty(String name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers) {
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throw new NotImplementedException();
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}
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PropertyInfo[] IReflect.GetProperties(BindingFlags bindingAttr) {
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throw new NotImplementedException();
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}
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Object IReflect.InvokeMember(String name, BindingFlags invokeAttr, Binder binder, Object target, Object[] args, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParameters) {
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throw new NotImplementedException();
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}
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Type IReflect.UnderlyingSystemType {
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get {
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throw new NotImplementedException();
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}
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}
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#endregion // IReflection Methods and Properties
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#region IAccessible Methods and Properties
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void IAccessible.accDoDefaultAction(object childID) {
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throw new NotImplementedException();
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}
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int IAccessible.accChildCount {
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get {
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throw new NotImplementedException();
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}
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}
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object IAccessible.accFocus {
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get {
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throw new NotImplementedException();
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}
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}
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object IAccessible.accHitTest(int xLeft, int yTop) {
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throw new NotImplementedException();
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}
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void IAccessible.accLocation(out int pxLeft, out int pyTop, out int pcxWidth, out int pcyHeight, object childID) {
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throw new NotImplementedException();
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}
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object IAccessible.accNavigate(int navDir, object childID) {
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throw new NotImplementedException();
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}
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object IAccessible.accParent {
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get {
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throw new NotImplementedException();
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}
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}
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void IAccessible.accSelect(int flagsSelect, object childID) {
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throw new NotImplementedException();
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}
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object IAccessible.accSelection {
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get {
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throw new NotImplementedException();
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}
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}
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object IAccessible.get_accChild(object childID) {
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throw new NotImplementedException();
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}
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string IAccessible.get_accDefaultAction(object childID) {
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throw new NotImplementedException();
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}
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string IAccessible.get_accDescription(object childID) {
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throw new NotImplementedException();
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}
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string IAccessible.get_accHelp(object childID) {
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throw new NotImplementedException();
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}
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int IAccessible.get_accHelpTopic(out string pszHelpFile,object childID) {
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throw new NotImplementedException();
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}
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string IAccessible.get_accKeyboardShortcut(object childID) {
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throw new NotImplementedException();
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}
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string IAccessible.get_accName(object childID) {
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throw new NotImplementedException();
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}
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object IAccessible.get_accRole(object childID) {
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throw new NotImplementedException();
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}
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object IAccessible.get_accState(object childID) {
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throw new NotImplementedException();
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}
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string IAccessible.get_accValue(object childID) {
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throw new NotImplementedException();
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}
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void IAccessible.set_accName(object childID, string newName) {
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throw new NotImplementedException();
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}
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void IAccessible.set_accValue(object childID, string newValue) {
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throw new NotImplementedException();
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}
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#endregion // IAccessible Methods and Properties
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}
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}
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