internal static void MapToolbar(IElementHandler handler, IToolbarElement te)
{
if (te.Toolbar == null)
{
return;
}
var rootManager = handler.MauiContext?.GetNavigationRootManager();
rootManager?.SetToolbarElement(te);
var platformView = handler.PlatformView as View;
_ = handler.MauiContext ?? throw new InvalidOperationException($"{nameof(MauiContext)} should have been set by base class.");
var appbarLayout =
platformView?.FindViewById <ViewGroup>(Resource.Id.navigationlayout_appbar) ??
rootManager?.RootView?.FindViewById <ViewGroup>(Resource.Id.navigationlayout_appbar);
var nativeToolBar = te.Toolbar?.ToPlatform(handler.MauiContext);
if (appbarLayout == null)
{
return;
}
if (appbarLayout.ChildCount > 0 &&
appbarLayout.GetChildAt(0) == nativeToolBar)
{
return;
}
appbarLayout.AddView(nativeToolBar, 0);
}
public void BackButtonNotVisibleForInitialPage()
{
var window = new TestWindow();
IToolbarElement toolbarElement = window;
var startingPage = new NavigationPage(new ContentPage());
window.Page = startingPage;
Assert.False(toolbarElement.Toolbar.BackButtonVisible);
}
public void ToolbarEmptyForContentPage()
{
Window window = new Window();
IToolbarElement toolbarElement = window;
var startingPage = new ContentPage();
window.Page = startingPage;
Assert.IsNull(toolbarElement.Toolbar);
}
public void ToolbarExistsForNavigationPage()
{
var window = new TestWindow();
IToolbarElement toolbarElement = window;
var startingPage = new NavigationPage(new ContentPage());
window.Page = startingPage;
Assert.IsNotNull(toolbarElement.Toolbar);
}
public void ToolbarClearsWhenNavigationPageRemoved()
{
var window = new Window();
IToolbarElement toolbarElement = window;
var startingPage = new NavigationPage(new ContentPage());
window.Page = startingPage;
window.Page = new ContentPage();
Assert.IsNull(toolbarElement.Toolbar);
}
internal static void MapToolbar(IElementHandler handler, IToolbarElement toolbarElement)
{
_ = handler.MauiContext ?? throw new InvalidOperationException($"{nameof(handler.MauiContext)} null");
if (toolbarElement.Toolbar != null)
{
var toolBar = toolbarElement.Toolbar.ToPlatform(handler.MauiContext);
handler.MauiContext.GetNavigationRootManager().SetToolbar(toolBar);
}
}
public ToolbarElement([NotNull] IToolbarElement element, double sortOrder, [NotNull] string strip, [NotNull] string chunk, [CanBeNull] string icon, [CanBeNull] string text, [NotNull] Type contextType, RibbonElementType elementType = RibbonElementType.LargeButton)
{
Element = element;
SortOrder = sortOrder;
Strip = strip;
Chunk = chunk;
Icon = icon;
Text = text;
ContextType = contextType;
ElementType = elementType;
}
public async Task InsertPageBeforeRootPageShowsBackButton()
{
var window = new TestWindow();
IToolbarElement toolbarElement = window;
var startingPage = new TestNavigationPage(true, new ContentPage());
window.Page = startingPage;
startingPage.Navigation.InsertPageBefore(new ContentPage(), startingPage.RootPage);
await Task.Delay(50);
Assert.True(toolbarElement.Toolbar.BackButtonVisible);
}
public async Task RemoveRootPageHidesBackButton()
{
var window = new TestWindow();
IToolbarElement toolbarElement = window;
var startingPage = new TestNavigationPage(true, new ContentPage());
window.Page = startingPage;
startingPage.Navigation.PushAsync(new ContentPage());
startingPage.Navigation.RemovePage(startingPage.RootPage);
await Task.Delay(50);
Assert.False(toolbarElement.Toolbar.BackButtonVisible);
}
public async Task NestedNavigation_BackButtonVisibleIfAnyoneHasPages()
{
var window = new TestWindow();
IToolbarElement toolbarElement = window;
var innerNavigationPage =
new NavigationPage(new ContentPage()
{
Content = new Label()
})
{
Title = "innerNavigationPage"
};
var contentPage = new ContentPage()
{
Title = "contentPage"
};
var tabbedPage = new TabbedPage()
{
Children =
{
contentPage,
innerNavigationPage,
}
};
var outerNavigationPage = new NavigationPage(new ContentPage())
{
Title = "outerNavigationPage"
};
window.Page = outerNavigationPage;
var toolbar = (Toolbar)toolbarElement.Toolbar;
// push Tabbed Page on to the stack of the out nagivation page
await outerNavigationPage.PushAsync(tabbedPage);
Assert.True(toolbar.BackButtonVisible);
tabbedPage.CurrentPage = innerNavigationPage;
// even though the inner navigation page has no stack the outer one does
// so we want to still display the navigation page
Assert.True(toolbar.BackButtonVisible);
await outerNavigationPage.PopAsync();
Assert.False(toolbar.BackButtonVisible);
}
public void NestedNavigation_NestedNavigationPage()
{
var window = new TestWindow();
IToolbarElement toolbarElement = window;
var innerNavigationPage =
new NavigationPage(new ContentPage()
{
Content = new Label()
})
{
Title = "innerNavigationPage"
};
var contentPage = new ContentPage()
{
Title = "contentPage"
};
var tabbedPage = new TabbedPage()
{
Children =
{
innerNavigationPage,
contentPage
}
};
var outerNavigationPage = new NavigationPage(tabbedPage)
{
Title = "outerNavigationPage"
};
window.Page = outerNavigationPage;
var toolbar = (Toolbar)toolbarElement.Toolbar;
Assert.True(toolbar.IsVisible);
tabbedPage.CurrentPage = contentPage;
Assert.True(toolbar.IsVisible);
// Validate that changes to non visible navigation page don't propagate to titlebar
NavigationPage.SetHasNavigationBar(innerNavigationPage.CurrentPage, false);
Assert.True(toolbar.IsVisible);
NavigationPage.SetHasNavigationBar(contentPage, false);
Assert.False(toolbar.IsVisible);
}
public void NestedNavigation_AppliesFromMostInnerNavigationPage()
{
var window = new TestWindow();
IToolbarElement toolbarElement = window;
var visibleInnerNavigationPage = new NavigationPage(new ContentPage())
{
Title = "visibleInnerNavigationPage"
};
var nonVisibleNavigationPage = new NavigationPage(new ContentPage())
{
Title = "nonVisibleNavigationPage"
};
var tabbedPage = new TabbedPage()
{
Children =
{
visibleInnerNavigationPage,
nonVisibleNavigationPage
}
};
var outerNavigationPage = new NavigationPage(tabbedPage)
{
Title = "outerNavigationPage"
};
window.Page = outerNavigationPage;
var toolbar = (Toolbar)toolbarElement.Toolbar;
NavigationPage.SetHasNavigationBar(tabbedPage, false);
NavigationPage.SetHasNavigationBar(nonVisibleNavigationPage.CurrentPage, false);
Assert.True(toolbar.IsVisible);
NavigationPage.SetHasNavigationBar(visibleInnerNavigationPage.CurrentPage, false);
Assert.False(toolbar.IsVisible);
NavigationPage.SetHasNavigationBar(visibleInnerNavigationPage.CurrentPage, true);
Assert.True(toolbar.IsVisible);
}
public async Task TitleAndTitleViewAreMutuallyExclusive()
{
var window = new TestWindow();
IToolbarElement toolbarElement = window;
var contentPage = new ContentPage()
{
Title = "Test Title"
};
var navigationPage = new NavigationPage(contentPage);
window.Page = navigationPage;
var titleView = new VerticalStackLayout();
var toolbar = (Toolbar)toolbarElement.Toolbar;
Assert.AreEqual("Test Title", toolbar.Title);
NavigationPage.SetTitleView(contentPage, titleView);
Assert.IsEmpty(toolbar.Title);
Assert.AreEqual(titleView, toolbar.TitleView);
NavigationPage.SetTitleView(contentPage, null);
Assert.AreEqual("Test Title", toolbar.Title);
}
internal void SetToolbarElement(IToolbarElement toolbarElement)
{
_toolbarElement = toolbarElement;
}
