public async Task ShellPartWithPagePush()
{
Shell shell = new Shell();
var item = CreateShellItem(shellContentRoute: ContentRoute, shellSectionRoute: SectionRoute, shellItemRoute: ItemRoute);
ShellLifeCycleState lifeCycleState = new ShellLifeCycleState(item);
shell.Items.Add(item);
lifeCycleState.AllTrue();
await shell.Navigation.PushAsync(new ContentPage());
//if you're just pushing a page then the section and item are still visible but the content is not
Assert.IsFalse(lifeCycleState.PageAppearing);
Assert.IsFalse(lifeCycleState.ContentAppearing);
Assert.IsTrue(lifeCycleState.SectionAppearing);
Assert.IsTrue(lifeCycleState.ItemAppearing);
await shell.Navigation.PushAsync(new ContentPage());
Assert.IsFalse(lifeCycleState.PageAppearing);
Assert.IsFalse(lifeCycleState.ContentAppearing);
Assert.IsTrue(lifeCycleState.SectionAppearing);
Assert.IsTrue(lifeCycleState.ItemAppearing);
await shell.Navigation.PopAsync();
Assert.IsFalse(lifeCycleState.PageAppearing);
Assert.IsFalse(lifeCycleState.ContentAppearing);
Assert.IsTrue(lifeCycleState.SectionAppearing);
Assert.IsTrue(lifeCycleState.ItemAppearing);
await shell.Navigation.PopAsync();
lifeCycleState.AllTrue();
}
public async Task ShellPartWithPopToRoot()
{
Shell shell = new Shell();
var item = CreateShellItem(shellContentRoute: ContentRoute, shellSectionRoute: SectionRoute, shellItemRoute: ItemRoute);
ShellLifeCycleState lifeCycleState = new ShellLifeCycleState(item);
shell.Items.Add(item);
lifeCycleState.AllTrue();
await shell.Navigation.PushAsync(new ContentPage());
await shell.Navigation.PushAsync(new ContentPage());
await shell.Navigation.PushAsync(new ContentPage());
await shell.Navigation.PushAsync(new ContentPage());
Assert.IsFalse(lifeCycleState.PageAppearing);
Assert.IsFalse(lifeCycleState.ContentAppearing);
Assert.IsTrue(lifeCycleState.SectionAppearing);
Assert.IsTrue(lifeCycleState.ItemAppearing);
await shell.Navigation.PopToRootAsync();
lifeCycleState.AllTrue();
}
public async Task PagePushModal()
{
Shell shell = new Shell();
var item = CreateShellItem(shellContentRoute: ContentRoute, shellSectionRoute: SectionRoute, shellItemRoute: ItemRoute);
ShellLifeCycleState lifeCycleState = new ShellLifeCycleState(item);
shell.Items.Add(item);
ContentPage page = new ContentPage();
bool appearing = false;
page.Appearing += (_, __) => appearing = true;
page.Disappearing += (_, __) => appearing = false;
await shell.Navigation.PushModalAsync(page);
Assert.IsTrue(appearing);
lifeCycleState.AllFalse();
await shell.Navigation.PopModalAsync();
Assert.IsFalse(appearing);
lifeCycleState.AllTrue();
}
public async Task ShellPartWithModalPush()
{
Shell shell = new Shell();
var item = CreateShellItem(shellContentRoute: ContentRoute, shellSectionRoute: SectionRoute, shellItemRoute: ItemRoute);
ShellLifeCycleState lifeCycleState = new ShellLifeCycleState(item);
shell.Items.Add(item);
lifeCycleState.AllTrue();
ContentPage page = new ContentPage();
await shell.Navigation.PushModalAsync(page);
lifeCycleState.AllFalse();
await shell.Navigation.PopModalAsync();
lifeCycleState.AllTrue();
}