void OnPagePropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == Page.TitleProperty.PropertyName)
{
var page = (Page)sender;
var index = TabbedPage.GetIndex(page);
TabViewItems[index].Label = page.Title;
}
else if (e.PropertyName == Page.IconProperty.PropertyName)
{
var page = (Page)sender;
var index = TabbedPage.GetIndex(page);
TabViewItems[index].Label = page.Title;
if (!string.IsNullOrEmpty(page.Icon))
{
TabViewItems[index].Image = new NSImage(page.Icon);
}
else if (TabViewItems[index].Image != null)
{
TabViewItems[index].Image = new NSImage();
}
}
}
void OnPagePropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == Page.TitleProperty.PropertyName)
{
var page = (Page)sender;
var index = TabbedPage.GetIndex(page);
TabViewItems[index].Label = page.Title;
}
else if (e.PropertyName == Page.IconImageSourceProperty.PropertyName)
{
var page = (Page)sender;
var index = TabbedPage.GetIndex(page);
var item = TabViewItems[index];
item.Label = page.Title;
_ = this.ApplyNativeImageAsync(page, Page.IconImageSourceProperty, icon =>
{
if (icon != null)
{
item.Image = icon;
}
else if (item.Image != null)
{
item.Image = new NSImage();
}
});
}
}
void SetSelectedTabViewItem()
{
if (Tabbed.CurrentPage == null)
{
return;
}
var selectedIndex = TabbedPage.GetIndex(Tabbed.CurrentPage);
SelectedTabViewItemIndex = selectedIndex;
}
void SelectNextTab(int direction)
{
int nextIndex = TabbedPage.GetIndex(Tabbed.CurrentPage) + direction;
if (nextIndex < 0 || nextIndex >= Tabbed.Children.Count)
{
return;
}
var nextPage = Tabbed.Children[nextIndex];
Tabbed.CurrentPage = nextPage;
}
void SelectNextTab(int direction)
{
int nextIndex = TabbedPage.GetIndex(Tabbed.CurrentPage) + direction;
if (nextIndex < 0 || nextIndex >= Tabbed.Children.Count)
{
return;
}
var nextPage = Tabbed.Children[nextIndex];
UIView.Transition(Platform.GetRenderer(Tabbed.CurrentPage).NativeView, Platform.GetRenderer(nextPage).NativeView, 0.15, UIViewAnimationOptions.TransitionCrossDissolve, null);
Tabbed.CurrentPage = nextPage;
}
void SelectNextTab(int direction)
{
int nextIndex = TabbedPage.GetIndex(Tabbed.CurrentPage) + direction;
if (nextIndex < 0 || nextIndex >= Tabbed.Children.Count)
{
return;
}
var nextPage = Tabbed.Children[nextIndex];
UIView.Transition(Platform.GetRenderer(Tabbed.CurrentPage).NativeView, Platform.GetRenderer(nextPage).NativeView, 0.15, UIViewAnimationOptions.CurveEaseInOut | UIViewAnimationOptions.LayoutSubviews | UIViewAnimationOptions.CurveLinear, null);
Tabbed.CurrentPage = nextPage;
}
void CurrentTabbedPageOnPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName != "CurrentPage")
{
return;
}
UpdateActionBar();
// If we switch tabs while pushing a new page, UpdateActionBar() can set currentTabbedPage to null
if (_currentTabbedPage == null)
{
return;
}
NavAnimationInProgress = true;
Page page = _currentTabbedPage.CurrentPage;
if (page == null)
{
ActionBar.SelectTab(null);
NavAnimationInProgress = false;
return;
}
int index = TabbedPage.GetIndex(page);
if (ActionBar.SelectedNavigationIndex == index || index >= ActionBar.NavigationItemCount)
{
NavAnimationInProgress = false;
return;
}
ActionBar.SelectTab(ActionBar.GetTabAt(index));
NavAnimationInProgress = false;
}
void CurrentTabbedPageChildrenChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (CurrentTabbedPage == null)
{
return;
}
_ignoreAndroidSelection = true;
e.Apply((o, index, create) => AddTab((Page)o, index), (o, index) => RemoveTab((Page)o, index), Reset);
if (CurrentTabbedPage.CurrentPage != null)
{
Page page = CurrentTabbedPage.CurrentPage;
int index = TabbedPage.GetIndex(page);
if (index >= 0 && index < CurrentTabbedPage.Children.Count)
{
ActionBar.GetTabAt(index).Select();
}
}
_ignoreAndroidSelection = false;
}
protected override int GetIndex(Page page)
{
return(TabbedPage.GetIndex(page));
}