void SetPage(Page page, bool isAnimated, bool isPopping)
{
if (_currentPage != null)
{
if (isPopping)
{
_currentPage.Cleanup();
}
_container.Content = null;
_currentPage.PropertyChanged -= OnCurrentPagePropertyChanged;
}
if (!isPopping)
{
_previousPage = _currentPage;
}
_currentPage = page;
if (page == null)
{
return;
}
UpdateBackButton();
UpdateBackButtonTitle();
page.PropertyChanged += OnCurrentPagePropertyChanged;
IVisualElementRenderer renderer = page.GetOrCreateRenderer();
UpdateTitleVisible();
UpdateTitleOnParents();
if (isAnimated && _transition == null)
{
_transition = new ContentThemeTransition();
_container.ContentTransitions = new TransitionCollection();
}
if (!isAnimated && _transition != null)
{
_container.ContentTransitions.Remove(_transition);
}
else if (isAnimated && _container.ContentTransitions.Count == 0)
{
_container.ContentTransitions.Add(_transition);
}
_container.Content = renderer.ContainerElement;
_container.DataContext = page;
}
void SetPage(Page page, bool isAnimated, bool isPopping)
{
// Ignore if same page loaded
if (page == _currentPage)
{
return;
}
// The new changes of this method, for :MasterDetails.Detail = exist page; performance
if (_currentPage != null)
{
// Don't clean if RetainsRenderer is true
if (isPopping && !page.GetRetainsRendererValue())
{
IVisualElementRenderer previousRenderer = _currentPage.GetOrCreateRenderer();
_container.RemoveContent(previousRenderer.ContainerElement);
_currentPage.Cleanup();
}
_container.Content = null;
_currentPage.PropertyChanged -= OnCurrentPagePropertyChanged;
}
if (!isPopping)
{
_previousPage = _currentPage;
}
_currentPage = page;
if (page == null)
{
return;
}
UpdateBackButton();
UpdateBackButtonTitle();
page.PropertyChanged -= OnCurrentPagePropertyChanged;
page.PropertyChanged += OnCurrentPagePropertyChanged;
IVisualElementRenderer renderer = page.GetOrCreateRenderer();
if (isAnimated && _transition == null)
{
_transition = new ContentThemeTransition();
_container.ContentTransitions = new TransitionCollection();
}
if (!isAnimated && _transition != null)
{
_container.ContentTransitions.Remove(_transition);
}
else if (isAnimated && _container.ContentTransitions.Count == 0)
{
_container.ContentTransitions.Add(_transition);
}
if (null != _previousPage)
{
((IPageController)_previousPage)?.SendDisappearing();
}
_container.Content = renderer.ContainerElement;
if (_container.CheckContentIfExist(renderer.ContainerElement))
{
((IPageController)page)?.SendAppearing();
}
_container.DataContext = page;
UpdateTitleVisible();
UpdateTitleOnParents();
// update the inside pages size, if first page change size(because phone orientation changed), navigate to (exist) second page, the page size must resize again
RefreshInsidePagesSize();
}