public void ShowPage(
IServiceProvider serviceProvider,
string name,
NavigationPageState state,
bool replaceCurrentTab)
{
if (serviceProvider == null)
throw new ArgumentNullException(nameof(serviceProvider));
if (name == null)
throw new ArgumentNullException(nameof(name));
INavigationPage oldPage = null;
var newPage = _navigationPageFactory.CreatePage(serviceProvider, name, state);
if (replaceCurrentTab && CurrentPage != null)
{
oldPage = CurrentPage;
RemovePage(oldPage);
}
AddPage(newPage);
_openedPagesChanged.OnNext(
new PagesChangedEventArgs(
oldPage,
newPage,
oldPage != null ? PagesChangeType.Updated : PagesChangeType.Added));
CurrentPage = newPage;
}
public PagesChangedEventArgs(
INavigationPage oldPage,
INavigationPage newPage,
PagesChangeType changeType)
{
_changeType = changeType;
_newPage = newPage;
_oldPage = oldPage;
}
public NavigationHistoryEntry(INavigationPage page)
{
Page = page;
}
public async void NavigateTo(INavigationPage page)
{
_navigationHistory.Push(page);
NavigationHistory.Insert(0, new NavigationHistoryEntry(page));
await SetPage();
}
public void ReloadPage(IServiceProvider serviceProvider, INavigationPage page)
{
if (page == null)
throw new ArgumentNullException(nameof(page));
if (!_openedPagesWithSubscriptions.ContainsKey(page))
throw new ArgumentException("Страница не найдена.", nameof(page));
var newPage = _navigationPageFactory.CreatePage(serviceProvider, page.Name, page.State);
RemovePage(page);
AddPage(newPage);
_openedPagesChanged.OnNext(new PagesChangedEventArgs(page, newPage, PagesChangeType.Updated));
if (CurrentPage == page)
CurrentPage = newPage;
}
private void RemovePage(INavigationPage page)
{
_openedPagesWithSubscriptions[page].Dispose();
_openedPagesWithSubscriptions.Remove(page);
}
private void AddPage(INavigationPage page)
{
_openedPagesWithSubscriptions.Add(
page,
page.Disposed.Subscribe(
arg =>
{
RemovePage(page);
_openedPagesChanged.OnNext(
new PagesChangedEventArgs(page, null, PagesChangeType.Removed));
if (CurrentPage == page)
CurrentPage = null; //ToDo: выбирать другю вкладку, если активная была закрыта
}));
}
public WebNavigationItemArgs(Control navigationItem, WebNavigation parentNavigation, INavigationPage pageData, bool isSelected, bool isInSelectedPath, int itemIndex, bool isFirstItem, bool isLastItem, bool expandingLevel, bool isChildOfRemovedNode, WebNavigation subNavigation)
: base(pageData)
{
if (navigationItem == null)
{
throw new ArgumentNullException("navigationItem");
}
if (parentNavigation == null)
{
throw new ArgumentNullException("parentNavigation");
}
this.parentNavigation = parentNavigation;
this.SubNavigation = subNavigation;
this.navigationItem = navigationItem;
this.IsSelected = isSelected;
this.IsInSelectedPath = isInSelectedPath;
this.IsChildOfRemovedNode = isChildOfRemovedNode;
this.ItemIndex = itemIndex;
this.IsFirstItem = isFirstItem;
this.IsLastItem = isLastItem;
this.ExpandingLevel = expandingLevel;
}
public async Task Navigate(INavigationPage page, object parameter)
{
_shell.RootFrame.Navigate(page.PageType, parameter);
}
public void Navigate(INavigationPage page)
{
navigationFrame.Navigate(page.PageType);
}
public virtual void NotifyPagePopped(INavigationPage poppedPage)
{
}
public OpenPageMessage(INavigationPage page)
{
Page = page;
}
public override void NotifyPagePopped(INavigationPage poppedPage)
{
// just pop and be happy
_navigationController.PopViewController(true);
}
