public TestShellSection(ShellContent shellContent)
{
Items.Add(shellContent);
}
public ShellFragmentContainer(ShellContent shellContent) : base()
{
ShellContentTab = shellContent;
}
protected virtual void OnShellSectionPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (_isDisposed)
{
return;
}
if (e.PropertyName == ShellSection.CurrentItemProperty.PropertyName)
{
var newContent = ShellSection.CurrentItem;
var oldContent = _currentContent;
if (newContent == null)
{
return;
}
if (_currentContent == null)
{
_currentContent = newContent;
_currentIndex = ShellSectionController.GetItems().IndexOf(_currentContent);
_tracker.Page = ((IShellContentController)newContent).Page;
return;
}
var items = ShellSectionController.GetItems();
if (items.Count == 0)
{
return;
}
var oldIndex = _currentIndex;
var newIndex = items.IndexOf(newContent);
var oldRenderer = _renderers[oldContent];
// this means the currently visible item has been removed
if (oldIndex == -1 && _currentIndex <= newIndex)
{
newIndex++;
}
_currentContent = newContent;
_currentIndex = newIndex;
if (!_renderers.ContainsKey(newContent))
{
return;
}
var currentRenderer = _renderers[newContent];
_isAnimatingOut = oldRenderer;
_pageAnimation?.StopAnimation(true);
_pageAnimation = null;
_pageAnimation = CreateContentAnimator(oldRenderer, currentRenderer, oldIndex, newIndex, _containerArea);
if (_pageAnimation != null)
{
_pageAnimation.AddCompletion((p) =>
{
if (_isDisposed)
{
return;
}
if (p == UIViewAnimatingPosition.End)
{
RemoveNonVisibleRenderers();
}
});
_pageAnimation.StartAnimation();
}
else
{
RemoveNonVisibleRenderers();
}
}
}
public ShellFragmentContainer(ShellContent shellContent, IMauiContext mauiContext)
{
ShellContentTab = shellContent;
_mauiContext = mauiContext;
}
public ShellContentRenderer(ShellContent content)
{
ShellContent = content;
NativeView = GetNativeView(content);
}
public ShellContentFragment(IShellContext shellContext, ShellContent shellContent)
{
_shellContext = shellContext;
_shellContent = shellContent;
}
static EvasObject GetNativeView(ShellContent content)
{
var page = (content as IShellContentController).GetOrCreateContent();
return(Platform.GetOrCreateRenderer(page).NativeView);
}
internal void NavigateToContent(ShellNavigationSource source, ShellContent shellContent, Page page, bool animate = true)
{
Page nextPage = null;
if (source == ShellNavigationSource.PopToRoot)
{
nextPage = (shellContent as IShellContentController).GetOrCreateContent();
}
else
{
nextPage = (ShellSection as IShellSectionController)
.PresentedPage ?? ((IShellContentController)shellContent)?.GetOrCreateContent();
}
if (CurrentContent != null && Page != null)
{
Page.PropertyChanged -= OnPagePropertyChanged;
((IShellContentController)CurrentContent).RecyclePage(Page);
}
CurrentContent = shellContent;
if (nextPage != null)
{
Page = nextPage;
Page.PropertyChanged += OnPagePropertyChanged;
switch (source)
{
case ShellNavigationSource.Insert:
{
var pageIndex = ShellSection.Stack.ToList().IndexOf(page);
if (pageIndex == Frame.BackStack.Count - 1)
{
Frame.Navigate(typeof(ShellPageWrapper), GetTransitionInfo(source));
}
else
{
Frame.BackStack.Insert(pageIndex, new PageStackEntry(typeof(ShellPageWrapper), null, GetTransitionInfo(source)));
}
break;
}
case ShellNavigationSource.Pop:
Frame.GoBack(GetTransitionInfo(source));
break;
case ShellNavigationSource.Unknown:
break;
case ShellNavigationSource.Push:
Frame.Navigate(typeof(ShellPageWrapper), GetTransitionInfo(source));
break;
case ShellNavigationSource.PopToRoot:
while (Frame.BackStackDepth > 2)
{
Frame.BackStack.RemoveAt(1);
}
Frame.GoBack(GetTransitionInfo(source));
break;
case ShellNavigationSource.Remove:
{
var pageIndex = FormsNavigationStack.IndexOf(page);
if (pageIndex == Frame.BackStack.Count - 1)
{
Frame.GoBack(GetTransitionInfo(source));
}
else
{
Frame.BackStack.RemoveAt(pageIndex);
}
break;
}
case ShellNavigationSource.ShellItemChanged:
break;
case ShellNavigationSource.ShellSectionChanged:
Frame.Navigate(typeof(ShellPageWrapper), GetTransitionInfo(source));
break;
case ShellNavigationSource.ShellContentChanged:
break;
}
UpdateSearchHandler(Shell.GetSearchHandler(Page));
var wrapper = (ShellPageWrapper)(Frame.Content);
if (wrapper.Page == null)
{
wrapper.Page = Page;
}
wrapper.LoadPage();
FormsNavigationStack = ShellSection.Stack.ToList();
}
}
public virtual IShellItemRenderer CreateItemRenderer(ShellContent item)
{
return(new ShellContentRenderer(item));
}
public async Task SelectedItemOnShellViewCorrectWithImplictFlyoutItem()
{
SetupBuilder();
var page1 = new ContentPage();
var page2 = new ContentPage();
var page3 = new ContentPage();
var flyoutItem1 = new FlyoutItem()
{
Items =
{
new ShellContent()
{
Content = page1, Title = "Content 1"
},
}
};
var flyoutItem2ShellSection = new ShellSection()
{
Items =
{
new ShellContent()
{
Content = page2, Title = "Content 2"
},
}
};
var flyoutItem3ShellContent = new ShellContent()
{
Content = page3,
Title = "Content 3"
};
var shell = await CreateShellAsync((shell) =>
{
shell.Items.Add(flyoutItem1);
shell.Items.Add(flyoutItem2ShellSection);
});
await CreateHandlerAndAddToWindow <ShellHandler>(shell, async (handler) =>
{
var navigationView =
handler.PlatformView as MauiNavigationView;
var menuItems = navigationView.MenuItemsSource as IList <NavigationViewItemViewModel>;
Assert.Equal(flyoutItem1, navigationView.SelectedItem);
// Switch to Shell Section
shell.CurrentItem = flyoutItem2ShellSection;
await OnLoadedAsync(page2);
Assert.Equal(flyoutItem2ShellSection, navigationView.SelectedItem);
// Switch to Shell Content
shell.CurrentItem = flyoutItem3ShellContent;
await OnLoadedAsync(page3);
Assert.Equal(flyoutItem3ShellContent, navigationView.SelectedItem);
});
}
internal void NavigateToContent(ShellNavigationSource source, ShellContent shellContent, Page page, bool animate = true)
{
Page nextPage = (ShellSection as IShellSectionController)
.PresentedPage ?? ((IShellContentController)shellContent)?.GetOrCreateContent();
if (CurrentContent != null && Page != null)
{
Page.PropertyChanged -= OnPagePropertyChanged;
((IShellContentController)CurrentContent).RecyclePage(Page);
}
CurrentContent = shellContent;
if (nextPage != null)
{
Page = nextPage;
Page.PropertyChanged += OnPagePropertyChanged;
switch (source)
{
case ShellNavigationSource.Insert:
break;
case ShellNavigationSource.Pop:
Frame.GoBack(GetTransitionInfo(source));
break;
case ShellNavigationSource.Unknown:
break;
case ShellNavigationSource.Push:
Frame.Navigate(typeof(ShellPageWrapper), GetTransitionInfo(source));
break;
case ShellNavigationSource.PopToRoot:
while (Frame.BackStackDepth > 1)
{
Frame.GoBack(GetTransitionInfo(source));
}
break;
case ShellNavigationSource.Remove:
break;
case ShellNavigationSource.ShellItemChanged:
break;
case ShellNavigationSource.ShellSectionChanged:
Frame.Navigate(typeof(ShellPageWrapper), GetTransitionInfo(source));
break;
case ShellNavigationSource.ShellContentChanged:
break;
}
UpdateSearchHandler(Shell.GetSearchHandler(Page));
var wrapper = (ShellPageWrapper)(Frame.Content);
if (wrapper.Page == null)
{
wrapper.Page = Page;
}
wrapper.LoadPage();
}
}
