private async void ContentPage_Appearing(object sender, EventArgs e)
{
_vm.startDialogAsync();
if (ToolbarItems.All(x => x.Command != _vm.ShareRouteCommand))
{
if (await _vm.UserCanShareAsync())
{
ToolbarItems.Add(new ToolbarItem()
{
Command = _vm.ShareRouteCommand, IconImageSource = "share.png"
});
}
}
}
private void ViewModel_ToolbarItems_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
ToolbarItems.Clear();
if (!(sender is ObservableCollection <ToolbarItem> vmToolbar))
{
return;
}
foreach (var item in vmToolbar)
{
if (ToolbarItems.All(x => x.Text != item.Text))
{
ToolbarItems.Add(item);
}
}
}
private void PurchaseOrderListPage_OnAppearing(object sender, EventArgs e)
{
try
{
var vm = (BindingContext as PurchaseOrderVM);
vm?.LoadDirectory();
PoListView.ItemSelected += (o, args) =>
{
var poSelected = (PurchaseOrder)PoListView.SelectedItem;
if (poSelected == null)
{
return;
}
Navigation.PushAsync(new PurchaseOrderPage(poSelected, vm));
PoListView.SelectedItem = null;
};
if (ToolbarItems.All(x => !x.Text.StartsWith("Status: ")))
{
ToolbarItems.Add(_azureSyncToolbarItem);
}
UpdateStatus();
PoListView.ItemDisappearing += (s, args) => { UpdateStatus(); };
if (ToolbarItems.Any(x => x.Text == App.CurrentUser.Id))
{
return;
}
ToolbarItems.Add(new ToolbarItem
{
Icon = "usericon.png",
Text = App.CurrentUser.Id,
Command = new Command(() => DisplayAlert("Login info", App.CurrentUser.Id, "OK"))
});
}
catch (Exception ex)
{
DisplayAlert("Error", ex.Message, "OK");
}
}
protected override void OnBindingContextChanged()
{
base.OnBindingContextChanged();
var viewModel = BindingContext as IBaseViewModel;
if (viewModel?.ToolbarItems == null)
{
return;
}
viewModel.ToolbarItems.CollectionChanged += ViewModel_ToolbarItems_CollectionChanged;
foreach (var toolBarItem in viewModel.ToolbarItems)
{
if (ToolbarItems.All(x => x.Text != toolBarItem.Text))
{
ToolbarItems.Add(toolBarItem);
}
}
}
