/// <summary>
/// To add an item on the application content layout
/// </summary>
/// <param name="item">ApplicationListItem</param>
/// <returns>ApplicationLayoutItem</returns>
public ApplicationLayoutItem AddItem(ApplicationListItem item)
{
var layoutItem = new ApplicationLayoutItem(item)
{
};
layoutItem.WidthRequest = this.Width / 2;
this.Children.Add(layoutItem);
return(layoutItem);
}
/// <summary>
/// To initialize some fields when the class is instantiated
/// </summary>
void Initialize()
{
_applications = new ObservableCollection <ApplicationListItem>();
_message = new Message {
};
_selectedAppControlType = AppControlType.Unknown;
_selectedItem = new ApplicationListItem {
Id = null
};
}
/// <summary>
/// A constructor for the ApplicationItem
/// </summary>
/// <param name="item">An ApplicationListItem item</param>
public ApplicationLayoutItem(ApplicationListItem item) : base()
{
_data = item;
AppId = _data.Id;
InitializeComponent();
}
/// <summary>
/// To update application layout
/// </summary>
/// <returns>A Task to update application layout asynchrously</returns>
Task UpdateContentLayout()
{
return(Task.Run(() =>
{
Device.BeginInvokeOnMainThread(() =>
{
_applications.Children.Clear();
});
var selected = ((MainViewModel)BindingContext).SelectedAppControlType;
var apps = ApplicationControlHelper.GetApplicationIdsForSpecificAppControlType(selected);
foreach (var app in apps)
{
var iconPath = ApplicationControlHelper.GetApplicationIconPath(app);
Device.BeginInvokeOnMainThread(() =>
{
/// Add an item to the list
var item = new ApplicationListItem
{
Id = app,
IconPath = iconPath,
BlendColor = Color.Gray,
};
((MainViewModel)BindingContext).Applications.Add(item);
_applications.AddItem(item).Selected += OnItemSelected;
});
}
Device.BeginInvokeOnMainThread(() =>
{
/// Add an empty item to the list
var item = new ApplicationListItem
{
Id = null,
IconPath = null,
BlendColor = Color.Gray,
};
((MainViewModel)BindingContext).Applications.Add(item);
_applications.AddItem(item);
});
/// For application list
Children.Add(
_applications,
Constraint.RelativeToParent((parent) =>
{
return 0;
}),
Constraint.RelativeToParent((parent) =>
{
return parent.Height * 0.2411;
}),
Constraint.RelativeToParent((parent) =>
{
return parent.Width;
}),
Constraint.RelativeToParent((parent) =>
{
return parent.Height * 0.5265;
}));
}));
}