/// <summary>
/// If the selection in the combo-box for the group-selection changes,
/// the grouped grid view scrolls the selected group into view. This is
/// especially useful in narrow views.
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="e">
/// The event arguments.
/// </param>
private void GroupComboBoxSelectionChanged(object sender, SelectionChangedEventArgs e)
{
string key = GroupComboBox.SelectedItem as string;
GroupInfoCollection <Item> group = _source.Single(groupInfoList => groupInfoList.Key == key);
ItemsByCategory.ScrollIntoView(group);
}
/// <summary>
/// If the data structure bound to the grid-view changes and causes the layout to update
/// (i.e. if an item was added), it is scrolled to the category in the combo box.
/// We can't call the scroll directly after adding the item (in AddItemClick), because
/// we have to wait until the dependency property signals the control that it changed and
/// the control changed its layout. If a new column is added by adding the new item, the control
/// wouldn't scroll that new column into view otherwise.
/// </summary>
/// <param name="sender">The sender</param>
/// <param name="e">The event arguments</param>
private void ItemsByCategoryLayoutUpdated(object sender, object e)
{
int needsToScroll = Interlocked.Exchange(ref _itemAdded, 0);
if (needsToScroll != 0)
{
string key = GroupComboBox.SelectedItem as string;
GroupInfoCollection <Item> group = _source.Single(groupInfoList => groupInfoList.Key == key);
ItemsByCategory.ScrollIntoView(group);
}
}
private async void DeleteItem(Item item)
{
var resp = await _dialogService.DisplayAlertAsync("", "Desea eliminar este item?", "Ok", "Cancelar");
if (!resp || item == null)
{
return;
}
ItemsByCategory.Remove(item);
Items.Remove(item);
await _cache.InsertLocalObject(CacheKeyDictionary.ItemList, Items);
}
public async void DeleteCategory(Category cat)
{
if (cat == null)
{
return;
}
var resp = await _dialogService.DisplayAlertAsync("", "Desea eliminar esta categoria?", "Ok", "Cancelar");
if (!resp)
{
return;
}
var categories = (Views.MasterPage.Current.BindingContext as MasterPageViewModel)?.MenuItems;
if (!categories.Contains(cat))
{
return;
}
categories.Remove(cat);
(Views.MasterPage.Current.BindingContext as MasterPageViewModel).MenuItems = categories;
var items = Items.ToList();
foreach (var item in items)
{
if (item.Category == cat.DisplayName)
{
if (ItemsByCategory.Contains(item))
{
ItemsByCategory.Remove(item);
}
Items.Remove(item);
}
}
ShowItemsByCategory(null, true);
await _cache.InsertLocalObject(CacheKeyDictionary.ItemList, Items);
await _cache.InsertLocalObject(CacheKeyDictionary.CategoryItems, categories);
}
public void ShowItemsByCategory(Category categoryItem, bool showAll = false)
{
ItemsByCategory = new ObservableCollection <Item>();
_currentCategory = categoryItem;
if (string.IsNullOrEmpty(categoryItem?.DisplayName) || showAll)
{
Title = "Todas las tareas";
ItemsByCategory = new ObservableCollection <Item>(Items);
return;
}
foreach (var item in Items)
{
if (item.Category == categoryItem.DisplayName)
{
ItemsByCategory.Add(item);
}
}
Title = categoryItem.DisplayName;
}
public override async void OnNavigatedTo(NavigationParameters parameters)
{
if (parameters.ContainsKey("itemCreated"))
{
var itemSelected = (Item)parameters["itemCreated"];
itemSelected.Id = (Items?.Count > 0)? Items.Last().Id + 1 : 1;
Items.Add(itemSelected);
if (_currentCategory == null)
{
ItemsByCategory.Add(itemSelected);
}
else if (itemSelected.Category == _currentCategory?.DisplayName)
{
ItemsByCategory.Add(itemSelected);
}
if (itemSelected.Date.Date == DateTime.Today.Date)
{
ShowNotification(0, true);
}
await _cache.InsertLocalObject(CacheKeyDictionary.ItemList, Items);
}
if (parameters.ContainsKey("itemEdited"))
{
var newItem = (Item)parameters["itemEdited"];
//by cat
var iEdited = ItemsByCategory.Single(i => i.Id == newItem.Id);
var idxNewItem = ItemsByCategory.IndexOf(iEdited);
ItemsByCategory.Remove(iEdited);
ItemsByCategory = _itemsByCategory;
if (_currentCategory == null)
{
ItemsByCategory.Insert(idxNewItem, newItem);
}
else if (newItem.Category == _currentCategory.DisplayName)
{
ItemsByCategory.Insert(idxNewItem, newItem);
}
//origin
var itemEdited = Items.Single(i => i.Id == newItem.Id);
var indexNewItem = Items.IndexOf(itemEdited);
Items.Remove(itemEdited);
Items.Insert(indexNewItem, newItem);
await _cache.InsertLocalObject(CacheKeyDictionary.ItemList, Items);
}
if (parameters.ContainsKey("itemCompleted"))
{
var newItem = (Item)parameters["itemCompleted"];
var itemEdited = Items.Single(i => i.Id == newItem.Id);
itemEdited.Completed = true;
await _cache.InsertLocalObject(CacheKeyDictionary.ItemList, Items);
}
}
