public static TargetItemBinding <View, object> FocusChangeBinding(
[NotNull] this IItemReference <View> viewReference,
FocusDirection focusDirection,
bool trackCanExecuteCommandChanged = false)
{
return(new TargetItemOneWayToSourceCustomBinding <View, object, View.FocusChangeEventArgs>(
viewReference,
(view, eventHandler) => view.NotNull().FocusChange += eventHandler,
(view, eventHandler) => view.NotNull().FocusChange -= eventHandler,
(view, canExecuteCommand) =>
{
if (trackCanExecuteCommandChanged)
{
view.NotNull().Enabled = canExecuteCommand;
}
},
(view, eventArgs) =>
{
switch (focusDirection)
{
case FocusDirection.InOut:
return true;
case FocusDirection.In:
return eventArgs.NotNull().HasFocus;
case FocusDirection.Out:
return !eventArgs.NotNull().HasFocus;
default:
return false;
}
},
() => "FocusChange"));
}
static void SetCustomFocus(EvasObject view, VisualElement next, FocusDirection direction)
{
var renderer = Platform.GetRenderer(next);
if (renderer != null)
{
(view as Widget)?.SetNextFocusObject(renderer.NativeView, direction);
}
}
public override void FocusMove(string VideoSource, FocusDirection Direction, [System.Xml.Serialization.XmlElementAttribute(DataType = "duration")] string Timeout)
{
ParametersValidation validation = new ParametersValidation();
validation.Add(ParameterType.String, "VideoSource", VideoSource);
validation.Add(ParameterType.OptionalString, "Timeout", Timeout);
validation.Add(ParameterType.String, "Direction", Direction.ToString());
ExecuteVoidCommand(validation, ProvisioningServiceTest.FocusMoveTest);
}
//////////////////////////////////////////////////////////////////////////////
#region Focus
private bool TryMoveFocus(KeyCode key)
{
FocusDirection direction = FindFocusDirection(key);
if (direction != FocusDirection.None)
{
return(TryMoveFocus(direction));
}
return(false);
}
public void Focus(FocusDirection direction, FocusAmount amount)
{
try
{
SelectedCameraDevice.Focus(direction, amount);
CaptureWithNoAf = true;
}
catch (Exception e)
{
Log.Error("Focus error", e);
}
}
private void ReadInput()
{
focusDirection = FocusDirection.CENTER;
if (Input.GetAxis("CameraLeftJoystick" + joystickIndex) > 0.25f)
{
focusDirection = FocusDirection.LEFT;
}
if (Input.GetAxis("CameraRightJoystick" + joystickIndex) > 0.25f)
{
focusDirection = FocusDirection.RIGHT;
}
}
public static TargetItemBinding <View, object> FocusChangeBinding(
this IItemReference <View> viewReference,
FocusDirection focusDirection = FocusDirection.InOut,
bool trackCanExecuteCommandChanged = false)
{
if (viewReference == null)
{
throw new ArgumentNullException(nameof(viewReference));
}
return(new TargetItemOneWayToSourceCustomBinding <View, object, View.FocusChangeEventArgs>(
viewReference,
(view, handler) => view.FocusChange += handler,
(view, handler) => view.FocusChange -= handler,
(view, canExecuteCommand) =>
{
if (trackCanExecuteCommandChanged)
{
view.Enabled = canExecuteCommand;
}
},
(view, args) => null,
(view, args) =>
{
switch (focusDirection)
{
case FocusDirection.InOut:
return true;
case FocusDirection.In:
return args.HasFocus;
case FocusDirection.Out:
return !args.HasFocus;
default:
return false;
}
},
() => $"{nameof(View.FocusChange)}"));
}
public static TargetItemBinding <SearchView, object> QueryTextFocusChangeBinding(
[NotNull] this IItemReference <SearchView> searchViewReference,
FocusDirection focusDirection = FocusDirection.InOut,
bool trackCanExecuteCommandChanged = false)
{
if (searchViewReference == null)
{
throw new ArgumentNullException(nameof(searchViewReference));
}
return(new TargetItemOneWayToSourceCustomBinding <SearchView, object, View.FocusChangeEventArgs>(
searchViewReference,
(searchView, eventHandler) => searchView.NotNull().QueryTextFocusChange += eventHandler,
(searchView, eventHandler) => searchView.NotNull().QueryTextFocusChange -= eventHandler,
(searchView, canExecuteCommand) =>
{
if (trackCanExecuteCommandChanged)
{
searchView.NotNull().Enabled = canExecuteCommand;
}
},
(searchView, eventArgs) => null,
(searchView, eventArgs) =>
{
switch (focusDirection)
{
case FocusDirection.InOut:
return true;
case FocusDirection.In:
return eventArgs.NotNull().HasFocus;
case FocusDirection.Out:
return !eventArgs.NotNull().HasFocus;
default:
return false;
}
},
() => $"{nameof(SearchView.QueryTextFocusChange)}"));
}
private View FindFocusView(View root, View current, FocusDirection direction)
{
int index = root.IndexOf(current);
Debug.Assert(index != -1);
if (direction == FocusDirection.Down || direction == FocusDirection.Right)
{
for (int i = index + 1; i < root.ChildCount(); ++i)
{
View child = root.ViewAt(i);
View view = FindFocusView(child, direction);
if (view != null)
{
return(view);
}
}
}
else if (direction == FocusDirection.Up || direction == FocusDirection.Left)
{
for (int i = index - 1; i >= 0; --i)
{
View child = root.ViewAt(i);
View view = FindFocusView(child, direction);
if (view != null)
{
return(view);
}
}
}
View parent = root.Parent();
if (parent != null)
{
return(FindFocusView(parent, root, direction));
}
return(null);
}
private View FindFocusView(View root, FocusDirection direction)
{
if (direction == FocusDirection.Down || direction == FocusDirection.Right)
{
for (int i = 0; i < root.ChildCount(); ++i)
{
View child = root.ViewAt(i);
View view = FindFocusView(child, direction);
if (view != null)
{
return(view);
}
if (child.CanFocus())
{
return(child);
}
}
}
else if (direction == FocusDirection.Up || direction == FocusDirection.Left)
{
for (int i = root.ChildCount() - 1; i >= 0; --i)
{
View child = root.ViewAt(i);
View view = FindFocusView(child, direction);
if (view != null)
{
return(view);
}
if (child.CanFocus())
{
return(child);
}
}
}
return(root.focusable ? root : null);
}
private bool TryMoveFocus(FocusDirection direction)
{
if (mFocusedView != null)
{
View parentView = mFocusedView.Parent();
View view = FindFocusView(parentView, mFocusedView, direction);
if (view != null)
{
return(FocusView(view));
}
}
else
{
View view = FindFocusView(mRootView, direction);
if (view != null)
{
return(FocusView(view));
}
}
return(false);
}
public abstract void FocusMove(string VideoSource, FocusDirection Direction, [System.Xml.Serialization.XmlElementAttribute(DataType = "duration")] string Timeout);
private View FindFocusView(View root, FocusDirection direction)
{
if (direction == FocusDirection.Down || direction == FocusDirection.Right)
{
for (int i = 0; i < root.ChildCount(); ++i)
{
View child = root.ViewAt(i);
View view = FindFocusView(child, direction);
if (view != null)
{
return view;
}
if (child.CanFocus())
{
return child;
}
}
}
else if (direction == FocusDirection.Up || direction == FocusDirection.Left)
{
for (int i = root.ChildCount() - 1; i >= 0; --i)
{
View child = root.ViewAt(i);
View view = FindFocusView(child, direction);
if (view != null)
{
return view;
}
if (child.CanFocus())
{
return child;
}
}
}
return root.focusable ? root : null;
}
private View FindFocusView(View root, View current, FocusDirection direction)
{
int index = root.IndexOf(current);
Debug.Assert(index != -1);
if (direction == FocusDirection.Down || direction == FocusDirection.Right)
{
for (int i = index + 1; i < root.ChildCount(); ++i)
{
View child = root.ViewAt(i);
View view = FindFocusView(child, direction);
if (view != null)
{
return view;
}
}
}
else if (direction == FocusDirection.Up || direction == FocusDirection.Left)
{
for (int i = index - 1; i >= 0; --i)
{
View child = root.ViewAt(i);
View view = FindFocusView(child, direction);
if (view != null)
{
return view;
}
}
}
View parent = root.Parent();
if (parent != null)
{
return FindFocusView(parent, root, direction);
}
return null;
}
private bool TryMoveFocus(FocusDirection direction)
{
if (mFocusedView != null)
{
View parentView = mFocusedView.Parent();
View view = FindFocusView(parentView, mFocusedView, direction);
if (view != null)
{
return FocusView(view);
}
}
else
{
View view = FindFocusView(mRootView, direction);
if (view != null)
{
return FocusView(view);
}
}
return false;
}
/// <summary>
/// Gives focus to the next widget in the widget tree.
/// </summary>
/// <param name="direction">Direction to move the focus.</param>
/// <since_tizen> preview </since_tizen>
public void FocusNext(FocusDirection direction)
{
Interop.Elementary.elm_object_focus_next(RealHandle, (int)direction);
}
public virtual void Focus(FocusDirection direction, FocusAmount amount)
{
throw new NotImplementedException();
}
/// <summary>
/// Sets the next widget with specific focus direction.
/// </summary>
/// <param name="next">Focus next widget.</param>
/// <param name="direction">Focus direction.</param>
/// <since_tizen> preview </since_tizen>
public void SetNextFocusObject(EvasObject next, FocusDirection direction)
{
Interop.Elementary.elm_object_focus_next_object_set(RealHandle, next?.RealHandle ?? IntPtr.Zero, (int)direction);
}
protected PlatformFocusEffect(FocusDirection direction)
{
_direction = direction;
}