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Working tab view

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watsonb8
2019-12-22 19:30:58 -05:00
parent 945b7e8e11
commit cc0d113204
2 changed files with 20 additions and 110 deletions
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120
Aurora/Design/Components/TabView/TabView.cs
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@@ -9,10 +9,10 @@ using Aurora.Design.Converters;
namespace Aurora.Design.Components.TabView
{
public delegate void PositionChangingEventHandler(object sender, PositionChangingEventArgs e);
public delegate void PositionChangingEventHandler(object sender, TabChangingEventArgs e);
public delegate void PositionChangedEventHandler(object sender, TabChangedEventArgs e);
public class PositionChangingEventArgs : EventArgs
public class TabChangingEventArgs : EventArgs
{
public bool Canceled { get; set; }
public int NewPosition { get; set; }
@@ -36,15 +36,12 @@ namespace Aurora.Design.Components.TabView
{
private StackLayout _mainContainerSL;
private Grid _headerContainerGrid;
// private CarouselViewControl _carouselView;
private ScrollView _tabHeadersContainerSv;
private ContentPresenter _tabPresenter;
public event PositionChangingEventHandler PositionChanging;
public event PositionChangedEventHandler PositionChanged;
protected virtual void OnTabChanging(ref PositionChangingEventArgs e)
protected virtual void OnTabChanging(ref TabChangingEventArgs e)
{
PositionChangingEventHandler handler = PositionChanging;
handler?.Invoke(this, e);
@@ -109,41 +106,6 @@ namespace Aurora.Design.Components.TabView
tab.HeaderTabTextFontAttributes = HeaderTabTextFontAttributes;
}
private bool _supressCarouselViewPositionChangedEvent;
/// <summary>
/// Allows for intercepting carousel property changing
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
// private void _carouselView_PropertyChanged(object sender, PropertyChangedEventArgs e)
// {
// if (e.PropertyName == nameof(_carouselView.Position) && !_supressCarouselViewPositionChangedEvent)
// {
// var positionChangingArgs = new PositionChangingEventArgs()
// {
// Canceled = false,
// NewPosition = _carouselView.Position,
// OldPosition = SelectedTabIndex
// };
// OnPositionChanging(ref positionChangingArgs);
// if (positionChangingArgs != null && positionChangingArgs.Canceled)
// {
// _supressCarouselViewPositionChangedEvent = true;
// _carouselView.PositionSelected -= _carouselView_PositionSelected;
// _carouselView.PropertyChanged -= _carouselView_PropertyChanged;
// _carouselView.Position = SelectedTabIndex;
// _carouselView.PositionSelected += _carouselView_PositionSelected;
// _carouselView.PropertyChanged += _carouselView_PropertyChanged;
// _supressCarouselViewPositionChangedEvent = false;
// }
// SetPosition(positionChangingArgs.NewPosition);
// }
// }
private void Init()
{
ItemSource = new ObservableCollection<TabItem>();
@@ -166,32 +128,16 @@ namespace Aurora.Design.Components.TabView
HorizontalOptions = LayoutOptions.FillAndExpand
};
_tabPresenter = new ContentPresenter();
// _carouselView = new CarouselViewControl
// {
// HorizontalOptions = LayoutOptions.FillAndExpand,
// VerticalOptions = LayoutOptions.FillAndExpand,
// HeightRequest = ContentHeight,
// ShowArrows = false,
// ShowIndicators = false,
// BindingContext = this
// };
// _carouselView.PropertyChanged += _carouselView_PropertyChanged;
// _carouselView.PositionSelected += _carouselView_PositionSelected;
_mainContainerSL = new StackLayout
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Children = { _tabHeadersContainerSv, _tabPresenter },
// Children = { _tabHeadersContainerSv, _carouselView }, //Need to set new child in place of carousel
Children = { _tabHeadersContainerSv },
Spacing = 0
};
Content = _mainContainerSL;
ItemSource.CollectionChanged += ItemSource_CollectionChanged;
SetCurrentTab(SelectedTabIndex, true);
}
protected override void OnBindingContextChanged()
@@ -206,17 +152,11 @@ namespace Aurora.Design.Components.TabView
view.Content.BindingContext = BindingContext;
}
}
SetCurrentTab(0, true);
}
}
// private void _carouselView_PositionSelected(object sender, PositionSelectedEventArgs e)
// {
// if (_carouselView.Position != e.NewValue || SelectedTabIndex != e.NewValue)
// {
// SetPosition(e.NewValue);
// }
// }
private void AddTabToView(TabItem tab)
{
var tabSize = (TabSizeOption.IsAbsolute && TabSizeOption.Value.Equals(0)) ? new GridLength(1, GridUnitType.Star) : TabSizeOption;
@@ -261,9 +201,7 @@ namespace Aurora.Design.Components.TabView
HeightRequest = HeaderSelectionUnderlineThickness,
WidthRequest = HeaderSelectionUnderlineWidth
};
//selectionBarBoxView.SetBinding(IsVisibleProperty, nameof(TabItem.IsCurrent));
var underlineColorBinding = new Binding(nameof(TabItem.IsCurrent), BindingMode.OneWay, new SelectedTabHeaderToTabBackgroundColorConverter(), this);
//selectionBarBoxView.SetBinding(BoxView.ColorProperty, nameof(TabItem.HeaderSelectionUnderlineColor), BindingMode.OneWay, new SelectedTabHeaderToTabBackgroundColorConverter(), );
selectionBarBoxView.SetBinding(BoxView.BackgroundColorProperty, underlineColorBinding);
selectionBarBoxView.SetBinding(WidthRequestProperty, nameof(TabItem.HeaderSelectionUnderlineWidth));
@@ -293,19 +231,14 @@ namespace Aurora.Design.Components.TabView
};
var tapRecognizer = new TapGestureRecognizer();
//Appears to set the current view
tapRecognizer.Tapped += (object s, EventArgs e) =>
{
// _supressCarouselViewPositionChangedEvent = true;
var capturedIndex = _headerContainerGrid.Children.IndexOf((View)s);
SetCurrentTab(capturedIndex);
// _supressCarouselViewPositionChangedEvent = false;
};
headerItemSL.GestureRecognizers.Add(tapRecognizer);
_headerContainerGrid.Children.Add(headerItemSL, _headerContainerGrid.ColumnDefinitions.Count - 1, 0);
//Sets caourselview itemssource to current tab
// _carouselView.ItemsSource = ItemSource.Select(t => t.Content);
}
#region HeaderBackgroundColor
@@ -529,56 +462,34 @@ namespace Aurora.Design.Components.TabView
}
int oldPosition = SelectedTabIndex;
var positionChangingArgs = new PositionChangingEventArgs()
var tabChangingArgs = new TabChangingEventArgs()
{
Canceled = false,
NewPosition = position,
OldPosition = oldPosition
};
OnTabChanging(ref positionChangingArgs);
OnTabChanging(ref tabChangingArgs);
if (positionChangingArgs != null && positionChangingArgs.Canceled)
if (tabChangingArgs != null && tabChangingArgs.Canceled)
{
return;
}
if (((position >= 0 && position < ItemSource.Count) || initialRun) &&
oldPosition != position)
if (((position >= 0 && position < ItemSource.Count) || initialRun))
{
if (oldPosition < ItemSource.Count)
if (oldPosition < ItemSource.Count && _mainContainerSL.Children.Count == 2)
{
ItemSource[oldPosition].IsCurrent = false;
//Remove second child
_mainContainerSL.Children.RemoveAt(1);
}
_tabPresenter.Content = ItemSource[position].Content;
_mainContainerSL.Children.Add(ItemSource[position].Content);
ItemSource[position].IsCurrent = true;
SelectedTabIndex = position;
Device.BeginInvokeOnMainThread(async () => await _tabHeadersContainerSv.ScrollToAsync(_headerContainerGrid.Children[position], ScrollToPosition.MakeVisible, false));
}
//Need to change to not use carouselView
// if ((position >= 0 && position < ItemSource.Count) || initialRun)
// {
// if (_carouselView.Position != position || initialRun)
// {
// _carouselView.PositionSelected -= _carouselView_PositionSelected;
// _carouselView.Position = position;
// _carouselView.PositionSelected += _carouselView_PositionSelected;
// }
// if (oldPosition != position)
// {
// if (oldPosition < ItemSource.Count)
// {
// ItemSource[oldPosition].IsCurrent = false;
// }
// ItemSource[position].IsCurrent = true;
// SelectedTabIndex = position;
// Device.BeginInvokeOnMainThread(async () => await _tabHeadersContainerSv.ScrollToAsync(_headerContainerGrid.Children[position], ScrollToPosition.MakeVisible, false));
// }
// }
var tabChangedArgs = new TabChangedEventArgs()
{
NewPosition = SelectedTabIndex,
@@ -637,7 +548,6 @@ namespace Aurora.Design.Components.TabView
_headerContainerGrid.Children.RemoveAt(_headerContainerGrid.Children.Count - 1);
_headerContainerGrid.ColumnDefinitions.Remove(_headerContainerGrid.ColumnDefinitions.Last());
}
// _carouselView.ItemsSource = ItemSource.Select(t => t.Content);
SelectedTabIndex = position >= 0 && position < ItemSource.Count ? position : ItemSource.Count - 1;
}
}