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//
// AccessibleBackend.cs
//
// Author:
// Vsevolod Kukol <sevoku@microsoft.com>
//
// Copyright (c) 2017 Microsoft Corporation
//
// 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.
using System;
using Xwt.Accessibility;
using Xwt.Backends;
#if XWT_GTK3
using AtkComponent = Atk.IComponent;
using AtkValue = Atk.IValue;
using AtkText = Atk.IText;
using AtkEditableText = Atk.IEditableText;
#else
using AtkComponent = Atk.Component;
using AtkValue = Atk.Value;
using AtkText = Atk.Text;
using AtkEditableText = Atk.EditableText;
#endif
namespace Xwt.GtkBackend
{
public class AccessibleBackend : IAccessibleBackend
{
protected Gtk.Widget widget;
IAccessibleEventSink eventSink;
ApplicationContext context;
public AccessibleBackend ()
{
}
public void Initialize (IAccessibleEventSink eventSink)
{
this.eventSink = eventSink;
}
public void Initialize (IWidgetBackend parentWidget, IAccessibleEventSink eventSink)
{
var backend = parentWidget as WidgetBackend;
Initialize (backend?.Widget, eventSink);
}
public void Initialize (object parentWidget, IAccessibleEventSink eventSink)
{
this.eventSink = eventSink;
widget = parentWidget as Gtk.Widget;
if (widget == null)
throw new ArgumentException ("The widget is not a Gtk.Widget.", nameof (parentWidget));
}
public void InitializeBackend (object frontend, ApplicationContext context)
{
this.context = context;
}
public Rectangle Bounds {
get {
int x = 0, y = 0, w = 0, h = 0;
(widget.Accessible as AtkComponent)?.GetExtents (out x, out y, out w, out h, Atk.CoordType.Screen);
return new Rectangle (x, y, w, h);
}
set {
(widget.Accessible as AtkComponent)?.SetExtents ((int)value.X, (int)value.Y, (int)value.Width, (int)value.Height, Atk.CoordType.Screen);
}
}
public string Description {
get {
return widget.Accessible.Description;
}
set {
widget.Accessible.Description = value;
}
}
public virtual string Label { get; set; }
public string Identifier {
get {
return widget.Accessible.Name;
}
set {
widget.Accessible.Name = value;
}
}
public Role Role {
get {
return widget.Accessible.Role.ToXwtRole ();
}
set {
widget.Accessible.Role = value.ToAtkRole ();
}
}
public string RoleDescription { get; set; }
public string Title { get; set; }
public string Value {
get {
if (widget.Accessible is AtkValue) {
GLib.Value val = GLib.Value.Empty;
(widget.Accessible as AtkValue)?.GetCurrentValue (ref val);
return val.Val.ToString ();
}
if (widget.Accessible is AtkText) {
var atkText = (widget.Accessible as AtkText);
return atkText?.GetText (0, atkText.CharacterCount - 1);
}
return null;
}
set {
if (widget.Accessible is AtkValue) {
(widget.Accessible as AtkValue)?.SetCurrentValue (new GLib.Value (value));
} else if (widget.Accessible is AtkEditableText) {
var atkText = (widget.Accessible as AtkEditableText);
atkText.TextContents = value;
}
}
}
public virtual Uri Uri { get; set; }
public bool IsAccessible {
get {
return widget.Accessible?.Role != Atk.Role.Invalid;
}
set {
// TODO
//if (widget.Accessible != null)
// return widget.Accessible.Role = Atk.Role.Invalid;
}
}
public void DisableEvent (object eventId)
{
throw new NotImplementedException ();
}
public void EnableEvent (object eventId)
{
throw new NotImplementedException ();
}
}
}
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