Feature: Hierarchical Navigation View (Dev Tracking)

[ojhad]

Tracking work for #79
(List & structure may change a bit in the coming days)

• Wait for the task [Update NavigationView to use ItemsRepeater] (Update NavigationView to use ItemsRepeater (Dev Tracking) #1477) to be completed

Update control to allow for hierarchical selection

• Update selection to be able to handle leveled selection
  • Correctly handle user interaction selection routes Left Navigation View
  • Correctly handle API selection routes Left Navigation View
  • Correctly handle user interaction selection routes Top Navigation View
  • Correctly handle API selection routes Top Navigation View
• Update usage of IndexPath within NavigationView to expect more than one level
• Write some tests to verify these selection scenarios

Create NavigationViewItem API and Test App Code

• Update IDL files and corresponding classes
• Create TestApp Pages
• Write some basic initial tests

Hierarchical Navigation View For Left Expanded Mode

• Update NVI to be able to display nested repeater and menu items
• add Expanding/Collapsing behavior
• proper selection indicator display (isChildSelected) markup
• proper selection indicator display (isChildSelected) databinding

Heirarchical Navigation View for Left Compact Mode

• Update NVI to be able to display its menu items in a flyout to the right
  • write logic to allow for the back and forth movement of items between main list and flyout
• Update selection to work between main list and flyout
• Update visuals (selection indicator, etc.) to work between main list and flyout

Hierarchical Navigation View for Top and Top Overflow modes

• Update Top NVI to be able to display its menu items in a flyout below
• Update 'More' flyout to work with the overflow flyout
• Verify selection behavior
• Animation

Flyout Behaviors

• Update flyout (overflow and normal) behavior to be consistent when selection is changed (for example in scenarios where an item with children vs leaf node is selected)

Accessibility and Narrator Support

• Update NVI Automation Peer (look at scroll to item)
• Write AP specific tests
• Verify Narrator support
• Verify keyboarding support

Add Animations to match motion comps

• Add selection indicator animations
• Add chevron and chevron animations

Create NavigationViewItem Template Settings

• Create NavigationViewItem Template Settings