void SetAccesibilityFocus(MvvmAspire.Controls.Label element)
{
if (UIAccessibility.IsVoiceOverRunning && element.AccesibilitySetFocus)
{
UIAccessibility.PostNotification(UIAccessibilityPostNotification.ScreenChanged, Control);
element.AccesibilitySetFocus = false;
}
}
void _tabChildren_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
{
int index = e.NewStartingIndex;
foreach (TabChild tc in e.NewItems)
{
tc.SetBinding(TabChild.AnimateTabSwitchProperty, new Binding {
Source = this, Path = "AnimateTabSwitch"
});
int idx = index++;
var column = new ColumnDefinition();
column.SetBinding(ColumnDefinition.WidthProperty, new Binding {
Source = tc, Path = "ColumnWidth"
});
this.GridView.ColumnDefinitions.Insert(idx, column);
var element = new MvvmAspire.Controls.Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
};
if (Device.RuntimePlatform == Device.WPF)
{
element.BackgroundImage = "ButtonTabStyle";
element.BorderWidth = 0;
}
element.XAlign = Xamarin.Forms.TextAlignment.Center;
element.SetBinding(Button.RefitTextEnabledProperty, new Binding {
Source = tc, Path = "RefitTextEnabled"
});
element.SetBinding(Button.TextProperty, new Binding {
Source = tc, Path = "Text"
});
element.SetBinding(Button.TextColorProperty, new Binding {
Source = tc, Path = "TextColor"
});
element.SetBinding(Button.CornerRadiusProperty, new Binding {
Source = tc, Path = "CornerRadius"
});
element.SetBinding(Button.FontSizeProperty, new Binding {
Source = tc, Path = "FontSize"
});
// element.SetBinding(Button.FontStyleProperty, new Binding { Source = tc, Path = "FontStyle" });
element.SetBinding(Button.BorderRadiusProperty, new Binding {
Source = tc, Path = "BorderRadius"
});
element.SetBinding(Button.ImageLeftHeightProperty, new Binding {
Source = tc, Path = "ImageLeftHeight"
});
element.SetBinding(Button.ImageLeftWidthProperty, new Binding {
Source = tc, Path = "ImageLeftWidth"
});
element.SetBinding(Button.ImageRightHeightProperty, new Binding {
Source = tc, Path = "ImageRightHeight"
});
element.SetBinding(Button.ImageRightWidthProperty, new Binding {
Source = tc, Path = "ImageRightWidth"
});
element.SetBinding(Button.ImageLeftProperty, new Binding {
Source = tc, Path = "ImageLeft"
});
element.SetBinding(Button.ImageRightProperty, new Binding {
Source = tc, Path = "ImageRight"
});
element.SetBinding(Button.HeightRequestProperty, new Binding("TabHeight", source: this));
element.SetBinding(Button.CenterImageProperty, new Binding {
Source = tc, Path = "CenterImage"
});
element.SetBinding(Button.PaddingProperty, new Binding {
Source = tc, Path = "TextPadding"
});
element.SetBinding(Button.SelectedImageLeftProperty, new Binding {
Source = tc, Path = "SelectedImageLeft"
});
element.SetBinding(Button.SelectedImageRightProperty, new Binding {
Source = tc, Path = "SelectedImageRight"
});
//if (Device.RuntimePlatform == Device.iOS)
element.PropertyChanged += ButtonPropertyChanged;
element.Clicked += element_Clicked;
var box = new BoxView(); // { HorizontalOptions = LayoutOptions.End };
box.SetBinding(BoxView.WidthRequestProperty, new Binding()
{
Source = this, Path = "TabDividerWidth"
});
box.SetBinding(BoxView.ColorProperty, new Binding()
{
Source = this, Path = "TabDividerColor"
});
var layout = new Grid
{
ColumnSpacing = 0,
Padding = 0
};
if (e.NewStartingIndex > 0)
{
layout.ColumnDefinitions = new ColumnDefinitionCollection
{
new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Auto)
},
new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}
};
layout.Children.Add(box, 0, 0);
layout.Children.Add(element, 1, 0);
}
else
{
layout.ColumnDefinitions = new ColumnDefinitionCollection
{
new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
}
};
layout.Children.Add(element, 0, 0);
}
this.GridView.Children.Add(layout, idx, 0);
var subText = new MvvmAspire.Controls.Label
{
VerticalOptions = LayoutOptions.End,
VerticalTextAlignment = Xamarin.Forms.TextAlignment.End,
HorizontalTextAlignment = Xamarin.Forms.TextAlignment.Center,
MaxLines = 1,
LineBreakMode = LineBreakMode.NoWrap
};
subText.SetBinding(MvvmAspire.Controls.Label.TextProperty, new Binding(path: "SubText", source: tc));
subText.SetBinding(MvvmAspire.Controls.Label.FontSizeProperty, new Binding(path: "SubTextFontSize", source: tc));
subText.SetBinding(MvvmAspire.Controls.Label.TextColorProperty, new Binding(path: "SubTextColor", source: tc));
subText.SetBinding(MvvmAspire.Controls.Label.IsVisibleProperty, new Binding(path: "SubText", source: tc, converter: new StringToBoolConverter()));
this.GridView.Children.Add(subText, idx, 0);
this.TabContentView.Children.Add(tc, 0, 1);
if (SelectedIndex == -1)
{
SelectedIndex = idx;
}
else
{
tc.Opacity = 0;
tc.IsVisible = false;
this.TabContentView.LowerChild(tc);
}
if (tc.SetCurrentSelected)
{
SelectedIndex = idx;
}
if (idx == SelectedIndex)
{
if (tc.SelectedBackgroundImage != null && tc.SelectedBackgroundImage.File != null)
{
element.BackgroundImage = tc.SelectedBackgroundImage;
}
element.BackgroundColor = tc.SelectedBackgroundColor;
element.TextColor = tc.SelectedTextColor;
subText.TextColor = tc.SelectedTextColor;
}
else
{
if (tc.BackgroundImage != null && tc.BackgroundImage.File != null)
{
element.BackgroundImage = tc.BackgroundImage;
}
element.BackgroundColor = tc.BackgroundColor;
element.TextColor = tc.TextColor;
subText.TextColor = tc.TextColor;
}
}
}
break;
case NotifyCollectionChangedAction.Move:
{
}
break;
case NotifyCollectionChangedAction.Remove:
{
int index = e.OldStartingIndex;
this.GridView.ColumnDefinitions.RemoveAt(index);
var button = this.GridView.Children.FirstOrDefault(c => Grid.GetColumn(c) == index && Grid.GetRow(c) == 0);
var boxView = this.GridView.Children.FirstOrDefault(c => Grid.GetColumn(c) == index && Grid.GetRow(c) == 1);
this.GridView.Children.Remove(button);
this.GridView.Children.Remove(boxView);
for (int i = e.OldStartingIndex + 1; i < this.GridView.Children.Count; i++)
{
button = this.GridView.Children.FirstOrDefault(c => Grid.GetColumn(c) == i && Grid.GetRow(c) == 0);
boxView = this.GridView.Children.FirstOrDefault(c => Grid.GetColumn(c) == i && Grid.GetRow(c) == 1);
Grid.SetColumn(button, i - 1);
Grid.SetColumn(boxView, i - 1);
}
this.TabContentView.Children.RemoveAt(index + 1);
RemoveTabChild(index);
}
break;
case NotifyCollectionChangedAction.Reset:
{
SelectedIndex = -1;
this.GridView.ColumnDefinitions.Clear();
this.GridView.Children.Clear();
while (this.TabContentView.Children.Count > 0)
{
RemoveTabChild(0);
}
}
break;
}
}
