void OnFocusChange(object?sender, global::Android.Views.View.FocusChangeEventArgs e)
{
if (TypedNativeView == null)
{
return;
}
if (e.HasFocus)
{
if (TypedNativeView.Clickable)
{
TypedNativeView.CallOnClick();
}
else
{
OnClick(TypedNativeView, EventArgs.Empty);
}
}
else if (_dialog != null)
{
_dialog.Hide();
TypedNativeView.ClearFocus();
_dialog = null;
}
}
public override void SetView(View view)
{
base.SetView(view);
_content = VirtualView?.View?.ToView();
if (_content != null)
{
if (VirtualView?.View != null)
{
VirtualView.View.NeedsLayout += HandleViewNeedsLayout;
}
_content.SizeToFit();
TypedNativeView.Add(_content);
var measuredSize = VirtualView.View.Measure(new SizeF(float.PositiveInfinity, float.PositiveInfinity));
TypedNativeView.ContentSize = measuredSize.ToCGSize();
}
if (VirtualView.Orientation == Orientation.Horizontal)
{
TypedNativeView.ShowsVerticalScrollIndicator = false;
TypedNativeView.ShowsHorizontalScrollIndicator = true;
}
else
{
TypedNativeView.ShowsVerticalScrollIndicator = true;
TypedNativeView.ShowsHorizontalScrollIndicator = false;
}
}
public override void Remove(View view)
{
TypedNativeView.RemoveView(_view);
_view = null;
base.Remove(view);
}
protected override MauiTimePicker CreateNativeView()
{
return(new MauiTimePicker(() => {
SetVirtualViewTime();
TypedNativeView?.ResignFirstResponder();
}));
}
public void Add(IView child)
{
_ = TypedNativeView ?? throw new InvalidOperationException($"{nameof(TypedNativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
_ = MauiContext ?? throw new InvalidOperationException($"{nameof(MauiContext)} should have been set by base class.");
TypedNativeView.AddView(child.ToNative(MauiContext), 0);
}
public void Add(IView child)
{
_ = TypedNativeView ?? throw new InvalidOperationException($"{nameof(TypedNativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
TypedNativeView.AddSubview(child.ToNative());
TypedNativeView.SetNeedsLayout();
}
public virtual SizeRequest GetDesiredSize(double widthConstraint, double heightConstraint)
{
var s = TypedNativeView.SizeThatFits(new CoreGraphics.CGSize((float)widthConstraint, (float)heightConstraint));
var request = new Size(s.Width == float.PositiveInfinity ? double.PositiveInfinity : s.Width,
s.Height == float.PositiveInfinity ? double.PositiveInfinity : s.Height);
return(new SizeRequest(request));
}
void OnCollectionChanged(object?sender, EventArgs e)
{
if (VirtualView == null || TypedNativeView == null)
{
return;
}
TypedNativeView.UpdatePicker(VirtualView);
}
void OnTextChanged()
{
if (TypedNativeView == null)
{
return;
}
TypedNativeView.HidePlaceholder(!string.IsNullOrEmpty(TypedNativeView.Text));
}
public void Add(IView child)
{
_ = TypedNativeView ?? throw new InvalidOperationException($"{nameof(TypedNativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
_ = MauiApp.Current?.Context ?? throw new InvalidOperationException($"The MauiApp.Current.Context can't be null.");
TypedNativeView.AddSubview(child.ToNative(MauiApp.Current.Context));
TypedNativeView.SetNeedsLayout();
}
public override void Remove(View view)
{
if (_content != null)
{
TypedNativeView.RemoveView(_content);
_content = null;
}
base.Remove(view);
}
public void Remove(IView child)
{
_ = TypedNativeView ?? throw new InvalidOperationException($"{nameof(TypedNativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
if (child?.Handler?.NativeView is View view)
{
TypedNativeView.RemoveView(view);
}
}
protected override MauiPicker CreateNativeView()
{
_pickerView = new UIPickerView();
var nativePicker = new MauiPicker(_pickerView)
{
BorderStyle = UITextBorderStyle.RoundedRect
};
var width = UIScreen.MainScreen.Bounds.Width;
var toolbar = new UIToolbar(new RectangleF(0, 0, width, 44))
{
BarStyle = UIBarStyle.Default, Translucent = true
};
var spacer = new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace);
var doneButton = new UIBarButtonItem(UIBarButtonSystemItem.Done, (o, a) =>
{
var pickerSource = (PickerSource)_pickerView.Model;
if (pickerSource.SelectedIndex == -1 && VirtualView?.Items != null && VirtualView.Items.Count > 0)
{
UpdatePickerSelectedIndex(0);
}
if (VirtualView?.SelectedIndex == -1 && VirtualView.Items != null && VirtualView.Items.Count > 0)
{
TypedNativeView?.SetSelectedIndex(VirtualView, 0);
}
UpdatePickerFromPickerSource(pickerSource);
nativePicker.ResignFirstResponder();
});
toolbar.SetItems(new[] { spacer, doneButton }, false);
nativePicker.InputView = _pickerView;
nativePicker.InputAccessoryView = toolbar;
nativePicker.InputView.AutoresizingMask = UIViewAutoresizing.FlexibleHeight;
nativePicker.InputAccessoryView.AutoresizingMask = UIViewAutoresizing.FlexibleHeight;
if (UIDevice.CurrentDevice.CheckSystemVersion(9, 0))
{
nativePicker.InputAssistantItem.LeadingBarButtonGroups = null;
nativePicker.InputAssistantItem.TrailingBarButtonGroups = null;
}
nativePicker.AccessibilityTraits = UIAccessibilityTrait.Button;
_pickerView.Model = new PickerSource(VirtualView);
return(nativePicker);
}
public void Remove(IView child)
{
_ = TypedNativeView ?? throw new InvalidOperationException($"{nameof(TypedNativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
if (child?.Handler?.NativeView is NativeView nativeView)
{
nativeView.RemoveFromSuperview();
TypedNativeView.SetNeedsLayout();
}
}
void OnFocusedChange(bool hasFocus)
{
if (TypedNativeView == null || VirtualView == null)
{
return;
}
// This will eliminate additional native property setting if not required.
if (VirtualView.ClearButtonVisibility == ClearButtonVisibility.WhileEditing)
{
TypedNativeView?.UpdateClearButtonVisibility(VirtualView, ClearButtonDrawable);
}
}
public virtual Size GetDesiredSize(double widthConstraint, double heightConstraint)
{
var sizeThatFits = TypedNativeView?.SizeThatFits(new CoreGraphics.CGSize((float)widthConstraint, (float)heightConstraint));
if (sizeThatFits.HasValue)
{
return(new Size(
sizeThatFits.Value.Width == float.PositiveInfinity ? double.PositiveInfinity : sizeThatFits.Value.Width,
sizeThatFits.Value.Height == float.PositiveInfinity ? double.PositiveInfinity : sizeThatFits.Value.Height));
}
return(new Size(widthConstraint, heightConstraint));
}
void SetControlPropertiesFromProxy()
{
if (TypedNativeView == null)
{
return;
}
foreach (UIControlState uiControlState in ControlStates)
{
TypedNativeView.SetTitleColor(UIButton.Appearance.TitleColor(uiControlState), uiControlState); // If new values are null, old values are preserved.
TypedNativeView.SetTitleShadowColor(UIButton.Appearance.TitleShadowColor(uiControlState), uiControlState);
TypedNativeView.SetBackgroundImage(UIButton.Appearance.BackgroundImageForState(uiControlState), uiControlState);
}
}
public override void SetVirtualView(IView view)
{
base.SetVirtualView(view);
_ = TypedNativeView ?? throw new InvalidOperationException($"{nameof(TypedNativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
TypedNativeView.CrossPlatformMeasure = VirtualView.Measure;
TypedNativeView.CrossPlatformArrange = VirtualView.Arrange;
foreach (var child in VirtualView.Children)
{
TypedNativeView.AddSubview(child.ToNative());
}
}
public override void SetView(View view)
{
base.SetView(view);
var newContent = VirtualView?.View?.ToView();
if (_content == null || newContent != _content)
{
if (_content != null)
TypedNativeView.RemoveView(_content);
_content = newContent;
if (_content != null)
TypedNativeView.AddView(_content);
}
}
public override void SetVirtualView(IView view)
{
base.SetVirtualView(view);
_ = TypedNativeView ?? throw new InvalidOperationException($"{nameof(TypedNativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
_ = MauiApp.Current?.Context ?? throw new InvalidOperationException($"The MauiApp.Current.Context can't be null.");
TypedNativeView.CrossPlatformMeasure = VirtualView.Measure;
TypedNativeView.CrossPlatformArrange = VirtualView.Arrange;
foreach (var child in VirtualView.Children)
{
TypedNativeView.AddView(child.ToNative(MauiApp.Current.Context));
}
}
public virtual SizeRequest GetDesiredSize(double widthConstraint, double heightConstraint)
{
if (TypedNativeView == null)
{
return(new SizeRequest(Size.Zero));
}
var deviceWidthConstraint = Context.ToPixels(widthConstraint);
var deviceHeightConstraint = Context.ToPixels(heightConstraint);
var widthSpec = MeasureSpecMode.AtMost.MakeMeasureSpec((int)deviceWidthConstraint);
var heightSpec = MeasureSpecMode.AtMost.MakeMeasureSpec((int)deviceHeightConstraint);
TypedNativeView.Measure(widthSpec, heightSpec);
var deviceIndependentSize = Context.FromPixels(TypedNativeView.MeasuredWidth, TypedNativeView.MeasuredHeight);
return(new SizeRequest(deviceIndependentSize));
}
void OnTextChanged(string?text)
{
if (VirtualView == null || TypedNativeView == null)
{
return;
}
// Even though <null> is technically different to "", it has no
// functional difference to apps. Thus, hide it.
var mauiText = VirtualView.Text ?? string.Empty;
var nativeText = text ?? string.Empty;
if (mauiText != nativeText)
{
VirtualView.Text = nativeText;
}
// Text changed should trigger clear button visibility.
TypedNativeView.UpdateClearButtonVisibility(VirtualView, ClearButtonDrawable);
}
public virtual Size GetDesiredSize(double widthConstraint, double heightConstraint)
{
if (TypedNativeView == null)
{
return(new Size(widthConstraint, heightConstraint));
}
var sizeThatFits = TypedNativeView.SizeThatFits(new CoreGraphics.CGSize((float)widthConstraint, (float)heightConstraint));
var size = new Size(
sizeThatFits.Width == float.PositiveInfinity ? double.PositiveInfinity : sizeThatFits.Width,
sizeThatFits.Height == float.PositiveInfinity ? double.PositiveInfinity : sizeThatFits.Height);
if (double.IsInfinity(size.Width) || double.IsInfinity(size.Height))
{
TypedNativeView.SizeToFit();
size = new Size(TypedNativeView.Frame.Width, TypedNativeView.Frame.Height);
}
return(size);
}
public virtual Size GetDesiredSize(double widthConstraint, double heightConstraint)
{
if (TypedNativeView == null)
{
return(Size.Zero);
}
if (Context == null)
{
return(new Size(widthConstraint, heightConstraint));
}
var deviceWidthConstraint = Context.ToPixels(widthConstraint);
var deviceHeightConstraint = Context.ToPixels(heightConstraint);
var widthSpec = MeasureSpecMode.Exactly.MakeMeasureSpec((int)deviceWidthConstraint);
var heightSpec = MeasureSpecMode.Exactly.MakeMeasureSpec((int)deviceHeightConstraint);
TypedNativeView.Measure(widthSpec, heightSpec);
return(Context.FromPixels(TypedNativeView.MeasuredWidth, TypedNativeView.MeasuredHeight));
}
void OnClick(object?sender, EventArgs e)
{
if (_dialog == null && VirtualView != null)
{
using (var builder = new AlertDialog.Builder(Context))
{
builder.SetTitle(VirtualView.Title ?? string.Empty);
string[] items = VirtualView.Items.ToArray();
builder.SetItems(items, (s, e) =>
{
var selectedIndex = e.Which;
VirtualView.SelectedIndex = selectedIndex;
TypedNativeView?.UpdatePicker(VirtualView);
});
builder.SetNegativeButton(AResource.String.Cancel, (o, args) => { });
_dialog = builder.Create();
}
if (_dialog == null)
{
return;
}
_dialog.SetCanceledOnTouchOutside(true);
_dialog.DismissEvent += (sender, args) =>
{
_dialog.Dispose();
_dialog = null;
};
_dialog.Show();
}
}
private void HandleChildrenChanged(object sender, LayoutEventArgs e)
{
TypedNativeView?.CreateTabs(VirtualView?.ToList());
}
private void VirtualView_ChildrenChanged(object sender, LayoutEventArgs e)
{
TypedNativeView?.Setup(VirtualView?.ToList());
}
public override void SetView(View view)
{
base.SetView(view);
TypedNativeView?.Setup(VirtualView?.ToList());
SubscribeEvent();
}