/// <summary>
/// Initializes a new instance of the AppShell, sets the static 'Current' reference,
/// adds callbacks for Back requests and changes in the SplitView's DisplayMode, and
/// provide the nav menu list with the data to display.
/// </summary>
public AppShell()
{
this.InitializeComponent();
this.Loaded += async(sender, args) =>
{
Current = this;
this.TogglePaneButton.Focus(FocusState.Programmatic);
await ActionItemManager.ReloadAsync();
};
this.RootSplitView.RegisterPropertyChangedCallback(
SplitView.DisplayModeProperty,
(s, a) =>
{
// Ensure that we update the reported size of the TogglePaneButton when the SplitView's
// DisplayMode changes.
this.CheckTogglePaneButtonSizeChanged();
});
ApplicationView.GetForCurrentView().SetPreferredMinSize(new Size(320, 500));
SystemNavigationManager.GetForCurrentView().BackRequested += SystemNavigationManager_BackRequested;
// If on a phone device that has hardware buttons then we hide the app's back button.
if (ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))
{
this.BackButton.Visibility = Visibility.Collapsed;
}
NavMenuList.ItemsSource = navlist;
}
private async void IsComplete_Click(object sender, RoutedEventArgs e)
{
// There is two way data binding going on - so what we don't need to do is worry
// about storing the data. This is purely about refreshing the view on the basis
// of changes
// The thing being clicked isn't necessarily selected. So we need to fix that
CheckBox checkbox = e.OriginalSource as CheckBox;
ListViewItem container = checkbox.AllAncestry().First(el => el is ListViewItem) as ListViewItem;
// It is really important we mark the container as selected. If we don't then we
// get crashes on sort.
container.IsSelected = true;
// Similarly we need to make a note of the selected action
ActionItemManager.Selected = this.ActionItems.ItemFromContainer(container) as ActionItem;
this.AlterSelectionIfRequired();
// Now sort and select
ActionItemManager.Actions.Sort();
this.SelectActionItemAndScroll();
// And save
await ActionItemManager.SaveAsync();
}
private void Create()
{
ActionItemManager.Selected = ActionItemManager.Create();
ActionItemManager.Actions.Add(ActionItemManager.Selected);
this.ActionItems.SelectedItem = ActionItemManager.Selected;
this.Edit();
}
protected override async void OnNavigatedFrom(NavigationEventArgs e)
{
if (string.IsNullOrEmpty(this.ActionItem.Raw))
{
ActionItemManager.Delete(this.ActionItem);
}
else
{
// Try and save first...
await ActionItemManager.SaveAsync();
}
// As you were
base.OnNavigatedFrom(e);
SystemNavigationManager.GetForCurrentView().BackRequested -= EditPage_BackRequested;
}
private async void SelectedIsComplete_Toggle()
{
// Only do anything if something is selected otherwise badness will happen
if (ActionItemManager.Selected != null)
{
// We do need to worry about setting data here since this is non-standard
ActionItemManager.Selected.IsComplete = !ActionItemManager.Selected.IsComplete;
this.AlterSelectionIfRequired();
// And save
await ActionItemManager.SaveAsync();
// Now sort
ActionItemManager.Actions.Sort();
this.SelectActionItemAndScroll();
}
}
private async Task DeleteAsync()
{
IList <ActionItem> toBeDeleted = new List <ActionItem>();
// We have to make a temporary list of things to delete as doing so in the loop
// will invalidate the IEnumerable
foreach (ActionItem actionItem in this.ActionItems.SelectedItems)
{
toBeDeleted.Add(actionItem);
}
foreach (var actionItem in toBeDeleted)
{
ActionItemManager.Delete(actionItem);
}
await ActionItemManager.SaveAsync();
}
private async void ChangeStorageLocation_Click(object sender, RoutedEventArgs e)
{
await Settings.SelectLocalFileAsync();
await ActionItemManager.ReloadAsync();
}
private async void Refresh_Click(object sender, RoutedEventArgs e)
{
await ActionItemManager.ReloadAsync();
this.SelectActionItemAndScroll();
}
