public HeaderFooterTemplate()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
BindingContext = new HeaderFooterDemoModel();
}
public PreselectedItemGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
CollectionView.SelectedItem = _demoFilteredItemSource.Items.Skip(2).First();
}
public EmptyViewViewGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
SearchBar.SearchCommand = new Command(() => _demoFilteredItemSource.FilterItems(SearchBar.Text));
}
public EmptyViewStringGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
SearchBar.TextChanged += SearchBarOnTextChanged;
}
public EmptyViewLoadSimulateGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
new Thread(() =>
{
Thread.Sleep(1000);
Device.BeginInvokeOnMainThread(() => CollectionView.ItemsSource = _demoFilteredItemSource.Items);
}).Start();
}
public ScrollModeTestGallery()
{
InitializeComponent();
var scrollModeSelector = new EnumSelector <ItemsUpdatingScrollMode>(() => CollectionView.ItemsUpdatingScrollMode,
mode => CollectionView.ItemsUpdatingScrollMode = mode, "SelectScrollMode");
Grid.Children.Add(scrollModeSelector);
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
}
public PreselectedItemsGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
CollectionView.SelectedItems.Add(_demoFilteredItemSource.Items.Skip(2).First());
CollectionView.SelectedItems.Add(_demoFilteredItemSource.Items.Skip(4).First());
CollectionView.SelectedItems.Add(_demoFilteredItemSource.Items.Skip(5).First());
CollectionView.SelectionMode = SelectionMode.Multiple;
}
public EmptyViewSwapGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
SearchBar.TextChanged += SearchBarTextChanged;
EmptyViewSwitch.Toggled += EmptyViewSwitchToggled;
SwitchEmptyView();
}
public EmptyViewLoadSimulateGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
Task.Run(async() =>
{
await Task.Delay(1000);
Dispatcher.Dispatch(() => CollectionView.ItemsSource = new List <object>());
await Task.Delay(1000);
Dispatcher.Dispatch(() => CollectionView.ItemsSource = _demoFilteredItemSource.Items);
});
}
public EmptyViewTemplateGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
CollectionView.EmptyView = _emptyViewGalleryFilterInfo;
SearchBar.SearchCommand = new Command(() =>
{
_demoFilteredItemSource.FilterItems(SearchBar.Text);
_emptyViewGalleryFilterInfo.Filter = SearchBar.Text;
});
}
public SelectionModeGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
var selectionModeSelector = new EnumSelector <SelectionMode>(() => CollectionView.SelectionMode,
mode => CollectionView.SelectionMode = mode);
Grid.Children.Add(selectionModeSelector);
CollectionView.SelectionChanged += CollectionViewOnSelectionChanged;
CollectionView.SelectionChangedCommand = new Command(() =>
SelectedItemsCommand.Text =
$"SelectionChangedCommand, selection is: {((CollectionViewGalleryTestItem)CollectionView.SelectedItem).Caption}");
}
public EmptyViewSwapGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
SearchBar.SearchCommand = new Command(() =>
{
_demoFilteredItemSource.FilterItems(SearchBar.Text);
});
EmptyViewSwitch.Toggled += EmptyViewSwitchToggled;
SwitchEmptyView();
}
public SelectionModeGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
var selectionModeSelector = new EnumSelector <SelectionMode>(() => CollectionView.SelectionMode,
mode => CollectionView.SelectionMode = mode);
Grid.Children.Add(selectionModeSelector);
CollectionView.SelectionChanged += CollectionViewOnSelectionChanged;
CollectionView.SelectionChangedCommand = new Command(UpdateSelectionInfoCommand);
UpdateSelectionInfo(Enumerable.Empty <CollectionViewGalleryTestItem>(), Enumerable.Empty <CollectionViewGalleryTestItem>());
UpdateSelectionInfoCommand();
}
public ObservableCollectionResetGallery()
{
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
}
}
};
var itemsLayout = new GridItemsLayout(3, ItemsLayoutOrientation.Vertical) as IItemsLayout;
var itemTemplate = ExampleTemplates.PhotoTemplate();
var collectionView = new CollectionView {
ItemsLayout = itemsLayout, ItemTemplate = itemTemplate
};
var generator = new ItemsSourceGenerator(collectionView, 100, ItemsSourceType.MultiTestObservableCollection);
layout.Children.Add(generator);
var resetter = new Resetter(collectionView);
layout.Children.Add(resetter);
Grid.SetRow(resetter, 1);
layout.Children.Add(collectionView);
Grid.SetRow(collectionView, 2);
Content = layout;
generator.GenerateItems();
}
public EmptyViewViewGallery()
{
InitializeComponent();
CollectionView.ItemTemplate = ExampleTemplates.PhotoTemplate();
CollectionView.ItemsSource = _demoFilteredItemSource.Items;
SearchBar.PropertyChanged += (s, e) =>
{
if (e.PropertyName == nameof(SearchBar.Text))
{
if (string.IsNullOrEmpty(SearchBar.Text))
{
_demoFilteredItemSource.FilterItems(SearchBar.Text);
}
}
};
SearchBar.SearchCommand = new Command(() => _demoFilteredItemSource.FilterItems(SearchBar.Text));
}
public ScrollModeTestGallery(IItemsLayout itemsLayout = null, Func <DataTemplate> dataTemplate = null, Func <CollectionView> createCollectionView = null)
{
InitializeComponent();
_collectionView = createCollectionView == null ? new CollectionView() : createCollectionView();
_collectionView.ItemsLayout = itemsLayout ?? LinearItemsLayout.Vertical;
var scrollModeSelector = new EnumSelector <ItemsUpdatingScrollMode>(() => _collectionView.ItemsUpdatingScrollMode,
mode => _collectionView.ItemsUpdatingScrollMode = mode, "SelectScrollMode");
Grid.Children.Add(scrollModeSelector);
Grid.Children.Add(_collectionView);
Grid.SetRow(_collectionView, 5);
_collectionView.ItemTemplate = dataTemplate == null?ExampleTemplates.PhotoTemplate() : dataTemplate();
_collectionView.ItemsSource = _demoFilteredItemSource.Items;
}
public TemplateCodeCollectionViewGridGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical)
{
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
}
}
};
var itemsLayout = new GridItemsLayout(2, orientation);
var itemTemplate = ExampleTemplates.PhotoTemplate();
var collectionView = new CollectionView {
ItemsLayout = itemsLayout, ItemTemplate = itemTemplate, AutomationId = "collectionview"
};
var generator = new ItemsSourceGenerator(collectionView, 100);
var spanSetter = new SpanSetter(collectionView);
layout.Children.Add(generator);
layout.Children.Add(spanSetter);
Grid.SetRow(spanSetter, 1);
layout.Children.Add(collectionView);
Grid.SetRow(collectionView, 2);
Content = layout;
spanSetter.UpdateSpan();
generator.GenerateItems();
}
public ObservableCodeCollectionViewGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical,
bool grid = true, int initialItems = 1000, bool addItemsWithTimer = false)
{
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
}
}
};
IItemsLayout itemsLayout = grid
? new GridItemsLayout(3, orientation)
: new ListItemsLayout(orientation) as IItemsLayout;
var itemTemplate = ExampleTemplates.PhotoTemplate();
var collectionView = new CollectionView {
ItemsLayout = itemsLayout, ItemTemplate = itemTemplate, AutomationId = "collectionview"
};
public TemplateCodeCollectionViewGallery(IItemsLayout itemsLayout)
{
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
}
}
};
var itemTemplate = ExampleTemplates.PhotoTemplate();
var collectionView = new CollectionView
{
ItemsLayout = itemsLayout,
ItemTemplate = itemTemplate,
AutomationId = "collectionview",
BackgroundColor = Color.Red
};
var generator = new ItemsSourceGenerator(collectionView, initialItems: 20);
layout.Children.Add(generator);
layout.Children.Add(collectionView);
Grid.SetRow(collectionView, 1);
Content = layout;
generator.GenerateItems();
}
public ObservableCodeCollectionViewGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical,
bool grid = true, int initialItems = 1000, bool addItemsWithTimer = false, ItemsUpdatingScrollMode scrollMode = ItemsUpdatingScrollMode.KeepItemsInView)
{
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
}
}
};
IItemsLayout itemsLayout = grid
? new GridItemsLayout(3, orientation)
: new LinearItemsLayout(orientation) as IItemsLayout;
var itemTemplate = ExampleTemplates.PhotoTemplate();
var collectionView = new CollectionView {
ItemsLayout = itemsLayout, ItemTemplate = itemTemplate,
AutomationId = "collectionview", Header = "This is the header", ItemsUpdatingScrollMode = scrollMode
};
var generator = new ItemsSourceGenerator(collectionView, initialItems, ItemsSourceType.ObservableCollection);
var remover = new ItemRemover(collectionView);
var adder = new ItemAdder(collectionView);
var replacer = new ItemReplacer(collectionView);
var mover = new ItemMover(collectionView);
var inserter = new ItemInserter(collectionView);
layout.Children.Add(generator);
layout.Children.Add(remover);
Grid.SetRow(remover, 1);
layout.Children.Add(adder);
Grid.SetRow(adder, 2);
layout.Children.Add(replacer);
Grid.SetRow(replacer, 3);
layout.Children.Add(mover);
Grid.SetRow(mover, 4);
layout.Children.Add(inserter);
Grid.SetRow(inserter, 5);
layout.Children.Add(collectionView);
Grid.SetRow(collectionView, 6);
Content = layout;
if (addItemsWithTimer)
{
generator.GenerateEmptyObservableCollectionAndAddItemsEverySecond();
}
else
{
generator.GenerateItems();
}
}
public ObservableCodeCollectionViewGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical,
bool grid = true)
{
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
}
}
};
IItemsLayout itemsLayout = grid
? new GridItemsLayout(3, orientation)
: new ListItemsLayout(orientation) as IItemsLayout;
var itemTemplate = ExampleTemplates.PhotoTemplate();
var collectionView = new CollectionView {
ItemsLayout = itemsLayout, ItemTemplate = itemTemplate
};
var generator = new ItemsSourceGenerator(collectionView);
var remover = new ItemRemover(collectionView);
var adder = new ItemAdder(collectionView);
var replacer = new ItemReplacer(collectionView);
var mover = new ItemMover(collectionView);
layout.Children.Add(generator);
layout.Children.Add(remover);
Grid.SetRow(remover, 1);
layout.Children.Add(adder);
Grid.SetRow(adder, 2);
layout.Children.Add(replacer);
Grid.SetRow(replacer, 3);
layout.Children.Add(mover);
Grid.SetRow(mover, 4);
layout.Children.Add(collectionView);
Grid.SetRow(collectionView, 5);
Content = layout;
generator.GenerateObservableCollection();
}
public ObservableMultiItemCollectionViewGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical,
bool grid = true, int initialItems = 1000, bool withIndex = false)
{
var layout = new Grid
{
RowDefinitions = new RowDefinitionCollection
{
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Auto
},
new RowDefinition {
Height = GridLength.Star
}
}
};
var itemsLayout = grid
? new GridItemsLayout(3, orientation)
: new ListItemsLayout(orientation) as IItemsLayout;
var itemTemplate = ExampleTemplates.PhotoTemplate();
var collectionView = new CollectionView {
ItemsLayout = itemsLayout, ItemTemplate = itemTemplate, AutomationId = "collectionview"
};
var generator = new ItemsSourceGenerator(collectionView, initialItems, ItemsSourceType.MultiTestObservableCollection);
var remover = new MultiItemRemover(collectionView, withIndex);
var adder = new MultiItemAdder(collectionView, withIndex);
var replacer = new MultiItemReplacer(collectionView);
var mover = new MultiItemMover(collectionView);
layout.Children.Add(generator);
layout.Children.Add(remover);
Grid.SetRow(remover, 1);
layout.Children.Add(adder);
Grid.SetRow(adder, 2);
layout.Children.Add(replacer);
Grid.SetRow(replacer, 3);
layout.Children.Add(mover);
Grid.SetRow(mover, 4);
layout.Children.Add(collectionView);
Grid.SetRow(collectionView, 5);
Content = layout;
generator.GenerateItems();
}