public override EvasObject CreateNativeView(int index, EvasObject parent)
{
View emptyView = null;
if (ItemTemplate is DataTemplateSelector selector)
{
emptyView = selector.SelectTemplate(this[index], Element).CreateContent() as View;
}
else
{
emptyView = ItemTemplate.CreateContent() as View;
}
var header = CreateHeaderView();
var footer = CreateFooterView();
var layout = new XStackLayout();
if (header != null)
{
layout.Children.Add(header);
}
layout.Children.Add(emptyView);
if (footer != null)
{
layout.Children.Add(footer);
}
layout.Parent = Element;
var renderer = Platform.GetOrCreateRenderer(layout);
(renderer as ILayoutRenderer)?.RegisterOnLayoutUpdated();
return(renderer.NativeView);
}
static View CreateItemView(SwipeItem item, bool horizontal)
{
var image = new Image
{
Source = item.IconImageSource
};
var label = new Label
{
Text = item.Text,
HorizontalTextAlignment = TextAlignment.Center,
#pragma warning disable CS0612 // Type or member is obsolete
FontSize = Device.GetNamedSize(NamedSize.Default, typeof(Label)),
#pragma warning disable CS0612 // Type or member is obsolete
};
if (horizontal)
{
image.VerticalOptions = LayoutOptions.Fill;
image.HorizontalOptions = LayoutOptions.Start;
label.VerticalOptions = LayoutOptions.Center;
label.HorizontalOptions = LayoutOptions.Center;
label.VerticalTextAlignment = TextAlignment.Center;
#pragma warning disable CS0612 // Type or member is obsolete
label.FontSize = Device.GetNamedSize(NamedSize.Large, typeof(Label));
#pragma warning disable CS0612 // Type or member is obsolete
}
else
{
image.VerticalOptions = LayoutOptions.Fill;
image.HorizontalOptions = LayoutOptions.Fill;
label.VerticalOptions = LayoutOptions.End;
label.HorizontalOptions = LayoutOptions.Center;
label.VerticalTextAlignment = TextAlignment.End;
}
var layout = new XStackLayout
{
Padding = 5,
BackgroundColor = item.BackgroundColor,
VerticalOptions = LayoutOptions.Fill,
Orientation = horizontal ? StackOrientation.Horizontal : StackOrientation.Vertical,
Children =
{
image,
label
}
};
if (horizontal)
{
layout.HeightRequest = SwipeItemHeight;
}
else
{
layout.WidthRequest = SwipeItemWidth;
}
return(layout);
}
protected override void Init()
{
var span = new Span
{
Text =
" Mi augue molestie ligula lobortis enim Velit, in. \n Imperdiet eu dignissim odio. Massa erat Hac inceptos facilisis nibh " +
" Interdum massa Consectetuer risus sociis molestie facilisi enim. Class gravida. \n Gravida sociosqu cras Quam velit, suspendisse" +
" leo auctor odio integer primis dui potenti dolor faucibus augue justo morbi ornare sem. "
};
var formattedString = new FormattedString();
formattedString.Spans.Add(span);
var label = new Microsoft.Maui.Controls.Label
{
LineBreakMode = LineBreakMode.TailTruncation,
VerticalOptions = LayoutOptions.Start,
FormattedText = formattedString,
MaxLines = 3
//max line is less than the text reproduce and textViewExtensions couldn't identify when
//it's already pass the MaxLines range because of the paragraph('\n' character).
};
var labelDescription = new Label
{
Text = "If you opened this page, the app didn't crash and you can read three lines in the label above, this test has passed",
VerticalOptions = LayoutOptions.StartAndExpand
};
var layout = new Microsoft.Maui.Controls.StackLayout();
layout.Children.Add(label);
layout.Children.Add(labelDescription);
Content = layout;
}
protected override EvasObject OnGetContent(Cell cell, string part)
{
if (part == MainContentPart)
{
var entryCell = cell as EntryCell;
int pixelHeight = Forms.ConvertToScaledPixel(entryCell.RenderHeight);
pixelHeight = pixelHeight > 0 ? pixelHeight : this.GetDefaultHeightPixel();
var label = new Label()
{
HorizontalOptions = LayoutOptions.Start,
VerticalOptions = LayoutOptions.Center,
VerticalTextAlignment = TextAlignment.Center,
FontSize = -1
};
label.SetBinding(Label.TextProperty, new Binding(EntryCell.LabelProperty.PropertyName));
label.SetBinding(Label.TextColorProperty, new Binding(EntryCell.LabelColorProperty.PropertyName, converter: new DefaultColorConverter()));
var entry = new Entry()
{
HorizontalOptions = LayoutOptions.Fill,
VerticalOptions = LayoutOptions.Center,
FontSize = -1,
};
entry.SetBinding(Entry.TextProperty, new Binding(EntryCell.TextProperty.PropertyName, BindingMode.TwoWay));
entry.SetBinding(Entry.PlaceholderProperty, new Binding(EntryCell.PlaceholderProperty.PropertyName));
entry.SetBinding(InputView.KeyboardProperty, new Binding(EntryCell.KeyboardProperty.PropertyName));
entry.SetBinding(Entry.HorizontalTextAlignmentProperty, new Binding(EntryCell.HorizontalTextAlignmentProperty.PropertyName));
var layout = new XStackLayout()
{
Orientation = StackOrientation.Horizontal,
Children =
{
label,
entry
}
};
layout.Parent = cell;
layout.BindingContext = entryCell;
layout.MinimumHeightRequest = Forms.ConvertToScaledDP(pixelHeight);
var renderer = Platform.GetOrCreateRenderer(layout);
(renderer as ILayoutRenderer)?.RegisterOnLayoutUpdated();
var nativeEntry = Platform.GetRenderer(entry)?.NativeView ?? null;
if (nativeEntry != null)
{
nativeEntry.PropagateEvents = false;
}
var nativeView = renderer.NativeView;
nativeView.MinimumHeight = pixelHeight;
_cacheCandidate[nativeView] = layout;
nativeView.Deleted += (sender, e) =>
{
_cacheCandidate.Remove(sender as EvasObject);
};
return(nativeView);
}
return(null);
}
void UpdateItems()
{
CurrentItems = GetSwipedItems();
var itemsLayout = new XStackLayout
{
Spacing = 0,
Orientation = IsHorizontalSwipe ? StackOrientation.Horizontal : StackOrientation.Vertical,
FlowDirection = SwipeDirection == SwipeDirection.Left ? FlowDirection.RightToLeft : FlowDirection.LeftToRight
};
foreach (var item in CurrentItems)
{
View itemView = null;
if (item is SwipeItem switem)
{
itemView = CreateItemView(switem, !IsHorizontalSwipe);
}
else if (item is SwipeItemView customItem)
{
itemView = CreateItemView(customItem);
}
else
{
continue;
}
var tap = new TapGestureRecognizer();
tap.Command = item.Command;
tap.CommandParameter = item.CommandParameter;
tap.Tapped += (s, e) =>
{
if (item is ISwipeItem swipeItem)
{
swipeItem.OnInvoked();
}
if (item is SwipeItemView customSwipeItem)
{
customSwipeItem.OnInvoked();
}
if (CurrentItems.SwipeBehaviorOnInvoked != SwipeBehaviorOnInvoked.RemainOpen)
{
Application.Current.Dispatcher.Dispatch(() =>
{
_ = SwipeCloseAsync();
});
}
};
itemView.GestureRecognizers.Add(tap);
if (IsHorizontalSwipe)
{
itemView.HorizontalOptions = LayoutOptions.Start;
itemView.VerticalOptions = LayoutOptions.Fill;
}
else
{
itemView.VerticalOptions = LayoutOptions.Start;
itemView.HorizontalOptions = LayoutOptions.Fill;
}
itemsLayout.Children.Add(itemView);
}
var itemsRenderer = Platform.GetOrCreateRenderer(itemsLayout);
(itemsRenderer as ILayoutRenderer)?.RegisterOnLayoutUpdated();
var measured = itemsLayout.Measure(Element.Width, Element.Height);
MaximumSwipeSize = Forms.ConvertToScaledPixel(
IsHorizontalSwipe ?
Math.Min(measured.Request.Width, Element.Width) :
Math.Min(measured.Request.Height, Element.Height));
Control.Children.Add(itemsRenderer.NativeView);
var itemsGeometry = NativeView.Geometry;
if (SwipeDirection == SwipeDirection.Up)
{
itemsGeometry.Y += (itemsGeometry.Height - MaximumSwipeSize);
}
itemsRenderer.NativeView.Geometry = itemsGeometry;
itemsRenderer.NativeView.StackBelow(Platform.GetRenderer(SwipeView.Content).NativeView);
_itemsRenderer = itemsRenderer;
}
void OnPromptRequested(Page sender, PromptArguments args)
{
// Verify that the page making the request is child of this platform
if (!_platform.PageIsChildOfPlatform(sender))
{
return;
}
var prompt = Native.Dialog.CreateDialog(Forms.NativeParent, (args.Accept != null));
prompt.Title = args.Title;
var entry = new Entry
{
MinimumWidthRequest = 200,
HorizontalOptions = LayoutOptions.Fill,
BackgroundColor = Color.FromRgb(250, 250, 250),
TextColor = Color.FromRgb(0, 0, 0),
Keyboard = args.Keyboard,
};
if (!string.IsNullOrEmpty(args.Placeholder))
{
entry.Placeholder = args.Placeholder;
}
if (args.MaxLength > 0)
{
entry.MaxLength = args.MaxLength;
}
var layout = new XStackLayout
{
Spacing = 10,
Children =
{
new Label
{
LineBreakMode = LineBreakMode.CharacterWrap,
TextColor = DeviceInfo.Idiom == DeviceIdiom.Watch ? Color.FromRgb(255, 255, 255) : Application.AccentColor,
Text = args.Message,
HorizontalOptions = LayoutOptions.Fill,
HorizontalTextAlignment = TextAlignment.Center,
#pragma warning disable CS0612 // Type or member is obsolete
FontSize = Device.GetNamedSize(NamedSize.Subtitle, typeof(Label)),
#pragma warning disable CS0612 // Type or member is obsolete
},
entry,
}
};
layout.Parent = sender;
var layoutrenderer = Platform.GetOrCreateRenderer(layout);
var request = layout.Measure(DeviceInfo.Idiom == DeviceIdiom.Watch ? sender.Width * 0.7 : sender.Width, sender.Height);
(layoutrenderer as ILayoutRenderer).RegisterOnLayoutUpdated();
layoutrenderer.NativeView.MinimumHeight = Forms.ConvertToScaledPixel(request.Request.Height);
layoutrenderer.NativeView.MinimumWidth = Forms.ConvertToScaledPixel(request.Request.Width);
prompt.Content = layoutrenderer.NativeView;
var cancel = new EButton(prompt)
{
Text = args.Cancel
};
prompt.NegativeButton = cancel;
cancel.Clicked += (s, evt) =>
{
args.SetResult(null);
prompt.Dismiss();
};
if (args.Accept != null)
{
var ok = new EButton(prompt)
{
Text = args.Accept
};
prompt.NeutralButton = ok;
ok.Clicked += (s, evt) =>
{
args.SetResult(entry.Text);
prompt.Dismiss();
};
}
entry.Completed += (s, e) =>
{
args.SetResult(entry.Text);
prompt.Dismiss();
};
prompt.BackButtonPressed += (s, evt) =>
{
prompt.Dismiss();
};
prompt.Show();
_alerts.Add(prompt);
prompt.Dismissed += (s, e) => _alerts.Remove(prompt);
}
