public async void addNewTask(object sender, EventArgs e)
{
toDoTask newTask = await TaskManager.InputBox(this.Navigation, null);
if (newTask != null)
{
allTasksTable.ItemsSource = null;
allTasks.Add(newTask);
allTasksTable.ItemsSource = allTasks;
dbModel.insertNewToDo(newTask);
}
}
public static Task <toDoTask> InputBox(INavigation navigation, toDoTask toDo)
{
if (toDo == null)
{
toDo = new toDoTask();
}
// wait in this proc, until user did his input
var tcs = new TaskCompletionSource <toDoTask>();
var lblTitle = new Label {
Text = "Title", HorizontalOptions = LayoutOptions.Center, FontAttributes = FontAttributes.Bold
};
var lblMessage = new Label {
Text = "Enter new Task:"
};
var txtInput = new Entry {
Text = toDo.task
};
var isUrgent = new Switch()
{
IsToggled = toDo.isUrgent
};
var isUrgentLabel = new Label {
Text = "is Urgent?"
};
var btnOk = new Button
{
Text = "Ok",
WidthRequest = 100,
BackgroundColor = Color.FromRgb(0.8, 0.8, 0.8),
};
btnOk.Clicked += async(s, e) =>
{
// close page
var result = txtInput.Text;
toDo.task = result;
toDo.isUrgent = isUrgent.IsToggled;
await navigation.PopModalAsync();
// pass result
tcs.SetResult(toDo);
};
var btnCancel = new Button
{
Text = "Cancel",
WidthRequest = 100,
BackgroundColor = Color.FromRgb(0.8, 0.8, 0.8)
};
btnCancel.Clicked += async(s, e) =>
{
// close page
await navigation.PopModalAsync();
// pass empty result
tcs.SetResult(null);
};
var slButtons = new StackLayout
{
Orientation = StackOrientation.Horizontal,
Children = { btnOk, btnCancel },
};
var isUrgentLayout = new StackLayout
{
Orientation = StackOrientation.Horizontal,
Children = { isUrgentLabel, isUrgent },
};
var layout = new StackLayout
{
Padding = new Thickness(0, 40, 0, 0),
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
Orientation = StackOrientation.Vertical,
Children = { lblTitle, lblMessage, txtInput, isUrgentLayout, slButtons },
};
// create and show page
var page = new ContentPage();
page.Content = layout;
navigation.PushModalAsync(page);
// open keyboard
txtInput.Focus();
// code is waiting her, until result is passed with tcs.SetResult() in btn-Clicked
// then proc returns the result
return(tcs.Task);
}
public void deleteTask(toDoTask toDelete)
{
_connection.DeleteAsync(toDelete);
}
public void updateTask(toDoTask toUpdate)
{
_connection.UpdateAsync(toUpdate);
}
public void insertNewToDo(toDoTask task)
{
_connection.InsertAsync(task);
}
