protected virtual Task <EntityViewModel <TEntity> > GetViewModel(IQueryable <TEntity> queryable, int page, int size)
{
return(Task.Run <EntityViewModel <TEntity> >(() =>
{
EntityViewModel <TEntity> model = new EntityViewModel <TEntity>(queryable, page, size);
model.Headers = Metadata.ViewProperties;
EntityViewButton createButton = new EntityViewButton();
createButton.Name = "Create";
createButton.GetInvokeDelegate = new EntityViewButtonCommandDelegate(viewer =>
{
return new Task(async() =>
{
var item = EntityQueryable.Create();
bool?result = null;
await viewer.Dispatcher.Invoke(async() =>
{
viewer.IsLoading = true;
var editor = await GetEditor(item);
result = editor.ShowDialog();
});
if (result == true)
{
await Update(item);
model.UpdateTotalPage();
model.Items = model.Items.Concat(new TEntity[] { item }).ToArray();
}
viewer.Dispatcher.Invoke(() =>
{
viewer.IsLoading = false;
});
});
});
model.ViewButtons = new IViewButton[] { createButton };
EntityItemButton editButton = new EntityItemButton();
editButton.Name = "Edit";
editButton.GetInvokeDelegate = new EntityItemButtonCommandDelegate((viewer, entity) =>
{
return new Task(async() =>
{
var item = (TEntity)entity;
bool?result = null;
await viewer.Dispatcher.Invoke(async() =>
{
viewer.IsLoading = true;
var editor = await GetEditor(item);
result = editor.ShowDialog();
});
if (result == true)
{
await Update(item);
}
viewer.Dispatcher.Invoke(() =>
{
viewer.IsLoading = false;
});
});
});
EntityItemButton removeButton = new EntityItemButton();
removeButton.Name = "Remove";
removeButton.GetInvokeDelegate = new EntityItemButtonCommandDelegate((viewer, entity) =>
{
return new Task(async() =>
{
viewer.Dispatcher.Invoke(() =>
{
viewer.IsLoading = true;
});
await EntityQueryable.RemoveAsync(entity.Index);
model.Items = await EntityQueryable.ToArrayAsync(queryable.Skip(page).Take(size));
viewer.Dispatcher.Invoke(() =>
{
viewer.IsLoading = false;
});
});
});
model.ItemButtons = new IEntityViewButton[] { editButton, removeButton };
return model;
}));
}