public void FlyoutTo(Type type, object parameter = null)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
if (!this.IsFlyoutAllowed())
{
this.Navigate(type, parameter);
}
else
{
var currentFlyoutControl = this.PeekFlyout();
if (currentFlyoutControl != null && currentFlyoutControl.Content.GetType() == type)
{
// if this flyout is currently opened, signal new parameter
if (currentFlyoutControl.Content is ISettingsPage)
{
((ISettingsPage)currentFlyoutControl.Content).OnNavigatedTo(parameter);
}
return;
}
SettingsSizeMode size = SettingsSizeMode.Small;
object content = null;
if (type == typeof(TaskPage))
{
// only cache TaskPage because of side effects with other pages +
// for memory usage (TaskPage is the only one used many times during the lifetime
// of the app)
if (!this.flyoutsCache.ContainsKey(type))
{
this.flyoutsCache.Add(type, Activator.CreateInstance(type));
}
content = this.flyoutsCache[type];
}
else
{
content = Activator.CreateInstance(type);
}
if (content is Page)
{
Page page = (Page)content;
if (page is ISettingsPage)
{
ISettingsPage settingsPage = (ISettingsPage)content;
size = settingsPage.Size;
settingsPage.OnNavigatedTo(parameter);
}
else
{
size = SettingsSizeMode.Small;
}
}
var flyoutControl = new FlyoutControl {
Content = content, Size = size, StaysOpen = true
};
flyoutControl.Show(this.OnFlyoutClosed);
this.flyouts.Push(flyoutControl);
}
}
