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 LinearItemsLayout(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();
}
public PropagateCodeGallery(IItemsLayout itemsLayout, int itemsCount = 2)
{
Title = $"Propagate FlowDirection=RTL";
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.Star
}
},
FlowDirection = FlowDirection.RightToLeft,
Visual = VisualMarker.Material
};
var itemTemplate = ExampleTemplates.PropagationTemplate();
var emptyView = ExampleTemplates.PropagationTemplate().CreateContent() as View;
var collectionView = new CollectionView
{
ItemsLayout = itemsLayout,
ItemTemplate = itemTemplate,
EmptyView = emptyView
};
var generator = new ItemsSourceGenerator(collectionView, initialItems: itemsCount);
layout.Children.Add(generator);
var instructions = new Label();
UpdateInstructions(layout, instructions, itemsCount == 0);
Grid.SetRow(instructions, 2);
layout.Children.Add(instructions);
var switchLabel = new Label {
Text = "Toggle FlowDirection"
};
var switchLayout = new StackLayout {
Orientation = StackOrientation.Horizontal
};
var updateSwitch = new Switch {
};
updateSwitch.Toggled += (sender, args) =>
{
layout.FlowDirection = layout.FlowDirection == FlowDirection.RightToLeft
? FlowDirection.LeftToRight
: FlowDirection.RightToLeft;
UpdateInstructions(layout, instructions, itemsCount == 0);
};
switchLayout.Children.Add(switchLabel);
switchLayout.Children.Add(updateSwitch);
Grid.SetRow(switchLayout, 1);
layout.Children.Add(switchLayout);
layout.Children.Add(collectionView);
Grid.SetRow(collectionView, 3);
Content = layout;
generator.GenerateItems();
}
public ObservableCodeCollectionViewGallery(ItemsLayoutOrientation orientation = ItemsLayoutOrientation.Vertical,
bool grid = true, int initialItems = 1000, bool addItemsWithTimer = false, ItemsUpdatingScrollMode scrollMode = ItemsUpdatingScrollMode.KeepItemsInView, bool resetBeforeAddItemsWithTimer = 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 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(resetBeforeAddItemsWithTimer);
}
else
{
generator.GenerateItems();
}
}