Empty state

In this example we are using WhileEmpty to show a temporary message while there is no content to display.

<App Background="#212121">
	<JavaScript>
		var Observable = require("FuseJS/Observable");
		var items = exports.items = Observable();
		
		exports.addItem = function() {
			items.add(Math.random());
		}
		
		exports.removeItem = function(arg) {
			items.tryRemove(arg.data);
		}
	</JavaScript>
	<iOS.StatusBarConfig Style="Light" />
	<DockPanel>
		<StackPanel Dock="Top" Color="#5E35B1">
			<StatusBarBackground />
			<Panel Height="56">
				<Panel Alignment="Right" HitTestMode="LocalBounds" Width="56" Height="56" Clicked="{addItem}">
					<Rectangle Height="2" Width="20" Color="#fff" />
					<Rectangle Width="2" Height="20" Color="#fff" />
				</Panel>
			</Panel>
			<Shadow Distance="1" Size="3" />
		</StackPanel>
		
		<WhileEmpty Items="{items}">
			<StackPanel ux:Name="emptyView" Alignment="Center" ItemSpacing="20">
				<Text Alignment="Center" FontSize="20">Nothing to see here</Text>
				<Text Alignment="Center">Add an item using the button above</Text>

				<AddingAnimation>
					<Change emptyView.Opacity="0" Duration="0.2" />
					<Scale Factor="0.4" Duration="0.4" Easing="CubicInOut" />
				</AddingAnimation>				
				<RemovingAnimation>
					<Change emptyView.Opacity="0" Duration="0.2" />
				</RemovingAnimation>
			</StackPanel>
		</WhileEmpty>
		
		<ScrollView>
			<StackPanel ItemSpacing="10" Margin="10">
				<Each Items="{items}">
					<Rectangle ux:Name="item" Color="#fff3" Height="80" CornerRadius="2" Clicked="{removeItem}">
						<AddingAnimation>
							<Change item.Opacity="0" Duration="0.3" />
						</AddingAnimation>
						<RemovingAnimation>
							<Change item.Opacity="0" Duration="0.1" />
						</RemovingAnimation>
						<LayoutAnimation>
							<Move Y="1" RelativeTo="PositionChange" Duration="0.15" Easing="CubicInOut" />
						</LayoutAnimation>
						<Shadow Distance="1" Size="2" />
					</Rectangle>
				</Each>
			</StackPanel>
		</ScrollView>
	</DockPanel>
</App>
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