public void SetViewModelByView(Xamarin.Forms.Page view)
{
if (view.BindingContext != this.BindingContext && view.BindingContext is ViewModelBase vm)
{
vm.OnNavigationAsync(new NavigationParameters(), NavigationType.Back);
return;
}
var viewType = view.GetType();
var viewModelType = Type.GetType(viewType.FullName.Replace("View", "ViewModel"));
if (viewModelType == null)
{
throw new Exception($"Mapping type of {viewModelType} is not a Page");
}
vm = ServiceLocator.Instance.Resolve(viewModelType) as ViewModelBase;
if (vm != null)
{
view.BindingContext = vm;
vm.OnNavigationAsync(new NavigationParameters(), NavigationType.New);
}
}
private bool IsModal(Page page)
{
return IsModal(page.GetType());
}
/// <summary>
/// Resolves a View and its related ViewModel
/// </summary>
/// <param name="viewModelType">The ViewModel type</param>
/// <param name="vm">The output ViewModel instance</param>
/// <returns>The ViewModel instance</returns>
public Xamarin.Forms.Page Resolve(Type viewModelType, out IViewModel viewModel)
{
var vm = _resolver.Resolve(viewModelType) as ViewModel;
Xamarin.Forms.Application.Current.On <iOS>().SetPanGestureRecognizerShouldRecognizeSimultaneously(true);
Xamarin.Forms.Page view = null;
ViewMapAttribute map = _mappings[viewModelType];
if (vm == null || map == null)
{
throw new InvalidOperationException("View Model not mapped!");
}
Xamarin.Forms.Page pageView = _resolver.Resolve(map.View) as Xamarin.Forms.Page;
if (pageView == null)
{
string message = string.Format("Page not mapped! View Model: {0}", viewModelType);
throw new InvalidOperationException(message);
}
if (map.MenuViewModel == null)
{
view = pageView;
view.On <iOS>().SetUseSafeArea(true);
}
else
{
IViewModel menuViewModel = null;
Xamarin.Forms.Page menuView = Resolve(map.MenuViewModel, out menuViewModel);
if (menuView != null)
{
pageView.BindingContext = vm;
pageView.Parent = null;
menuView.Parent = null;
if (string.IsNullOrWhiteSpace(menuView.Title))
{
menuView.Title = menuView.GetType().Name;
}
if (string.IsNullOrWhiteSpace(pageView.Title))
{
pageView.Title = pageView.GetType().Name;
}
view = new MasterDetailPage
{
Master = menuView,
Detail = pageView
};
pageView.On <iOS>().SetUseSafeArea(true);
}
}
view.Title = vm.Title;
view.BindingContext = vm;
if (map.HideNavigation)
{
Xamarin.Forms.NavigationPage.SetHasNavigationBar(view, false);
}
viewModel = vm;
return(view);
}
string LoadResourceText(Page demoPage, string prefix, string suffix) {
string className = demoPage.GetType().Name;
Assembly asm = demoPage.GetType().GetTypeInfo().Assembly;
return LoadResourceText(prefix + className + suffix, asm);
}
private bool IsSameAsCurrentPage (Page page)
{
return (this.navigationPage.CurrentPage != null) && (this.navigationPage.CurrentPage.GetType () == page.GetType ());
}
protected void PagePushed(Page page)
{
Debug.WriteLine("PagePushed: Page={0}", page.GetType().Name);
var navigationAware = helper.AsNavigationAware(page);
if (navigationAware != null)
{
//
navigationAware.PagePushed(page as IPage);
}
}
protected void OnNavigatingFrom(Page targetView, Page nextView)
{
Debug.WriteLine("OnNavigatingFrom: targetView={0}, previousView={1}", targetView.GetType().Name, nextView.GetType().Name);
// var navigationAware = helper.AsNavigationAware(targetView);
//
// if (navigationAware != null)
// {
// //
// navigationAware.OnNavigatingFrom(nextView as IPage);
// }
// modified 3-3-2015
var navigationAware = helper.AsNavigationAware(nextView);
if (navigationAware != null)
{
//
navigationAware.OnNavigatingFrom(targetView as IPage);
}
}
protected void OnNavigatingTo(Page targetView, Page previousView)
{
Debug.WriteLine("OnNavigatingTo: targetView={0}, nextView={1}", targetView.GetType().Name, previousView != null ? previousView.GetType().Name : string.Empty);
var navigationAware = helper.AsNavigationAware(targetView);
if (navigationAware != null)
{
// To page!
navigationAware.OnNavigatingTo(targetView as IPage);
}
}
/// <summary>
/// Called when [navigating from].
/// </summary>
/// <param name="targetView">The target view.</param>
/// <param name="nextView">The next view.</param>
protected void OnNavigatingFrom(Page targetView, Page nextView)
{
Debug.WriteLine("OnNavigatingFrom: targetView={0}, previousView={1}", targetView.GetType().Name, nextView.GetType().Name);
var navigationAware = AsNavigationAware(targetView);
if (navigationAware != null)
{
navigationAware.OnNavigatingFrom(nextView);
}
}
public HomeMDPMaster()
{
InitializeComponent();
ListView = lst_notebooks;
object version = "";
App.Current.Resources.TryGetValue("version", out version);
lbl_version.Text = version.ToString();
mst_lock_unlock.Clicked += new EventHandler((o, e) =>
{
LocknoteMgr.GetInstance().SecureErase();
((App)Application.Current).ResumeApp();
});
mst_settings.Clicked += new EventHandler((o, e) =>
{
((NavigationPage)((HomeMDP)Application.Current.MainPage).Detail).PushAsync(new SettingsPage());
((HomeMDP)Application.Current.MainPage).IsPresented = false;
});
mst_new_notebook.Clicked += new EventHandler((o, e) =>
{
TextEntryPrompt p = new TextEntryPrompt()
{
IsNavPage = true, PositiveButtonText = "Create", NegativeButtonText = "Cancel", PromptTitle = "New Notebook", Hint = "A Notebook"
};
p.OnPromptSaved += new Prompt.PromptClosedEventListener(() =>
{
LocknoteMgr.GetInstance().NoteManager.NewNotebook(p.Text);
LocknoteMgr.GetInstance().SaveNotebooks(true);
((HomeMDP)Application.Current.MainPage).IsPresented = true;
});
p.Show(((HomeMDP)Application.Current.MainPage).Detail);
((HomeMDP)Application.Current.MainPage).IsPresented = false;
});
lst_notebooks.ItemTapped += new EventHandler((o, e) =>
{
Notebook nb = (Notebook)o;
SectionsPage sp = new SectionsPage(nb);
sp.Title = nb.Title + " | Sections";
sp.ListView.ItemsSource = nb.Sections;
((HomeMDP)Application.Current.MainPage).Detail = new NavigationPage(sp);
((HomeMDP)Application.Current.MainPage).IsPresented = false;
});
lst_notebooks.ItemLongTapped += new LNListView.ItemLongTappedHandler((o, e) =>
{
Notebook nb = (Notebook)o;
EditNotebookPrompt p = new EditNotebookPrompt()
{
Title = nb.Title, IsNavPage = true
};
Xamarin.Forms.Page pg = ((NavigationPage)((HomeMDP)Application.Current.MainPage).Detail).CurrentPage;
p.OnPromptSaved += new Prompt.PromptClosedEventListener(() =>
{
nb.Title = p.Title;
if (pg.GetType() == typeof(SectionsPage))
{
pg.Title = p.Title + " | Sections";
}
LocknoteMgr.GetInstance().SaveNotebooks(true);
lst_notebooks.ItemsSource = LocknoteMgr.GetInstance().NoteManager.Notebooks;
});
p.DeleteClicked += new EventHandler((o2, e2) =>
{
Prompt p2 = new Prompt()
{
PromptTitle = "Are you sure?", PositiveButtonText = "Yes", NegativeButtonText = "No", IsNavPage = true
};
p2.OnPromptSaved += new Prompt.PromptClosedEventListener(() =>
{
LocknoteMgr.GetInstance().NoteManager.DeleteNotebook(nb);
p.Dismiss();
});
p2.Show(((HomeMDP)Application.Current.MainPage).Detail);
});
p.Show(((HomeMDP)Application.Current.MainPage).Detail);
((HomeMDP)Application.Current.MainPage).IsPresented = false;
});
}
public Task PushPage(Xamarin.Forms.Page page, FreshBasePageModel model, bool modal = false, bool animate = true)
{
if (IsPresented)
{
IsPresented = false;
}
if (modal)
{
return(Detail.Navigation.PushModalAsync(page));
}
KeyValuePair <MenuCellData, Xamarin.Forms.Page> innerPage = _pages.FirstOrDefault(p => ((NavigationPage)p.Value).CurrentPage.GetType() == page.GetType());
if (innerPage.Key != null)
{
return(Task.FromResult(ListView.SelectedItem = innerPage.Key));
}
return((Detail as NavigationPage).PushAsync(page, animate));
}