Ensure objects held and shared by views are correct by verifying they retain
the properties applications read after archiving.
* CPAppearance: Add the name accessor.
* CPShadow:
* Add CPCoding.
* Add init with the default shadow values.
* CPObjectArchivingTest: Verifies round trips of Foundation values, AppKit
values, and objects that belong to views.
* DropInArchiveTest: State the reasons the MainMenu cibs are not included.
Keyed archiving preserves view hierarchies created in code. Decoded views
retain their content, subviews and state, and each view class is verified
against its own description before archiving.
* CPAccordionView: Add CPCoding to CPAccordionView and CPAccordionViewItem.
* CPBox:
* Encode the content, title and box views unconditionally.
* Clear the superviews of the box and title views during decoding.
* CPButton: Initialize the value to CPOffState.
* CPMapTable: Add CPCoding.
* CPPopUpButton: Clear the inherited button value.
* CPSearchField: Update the cancel button when the object value changes.
* CPSplitView: Return nil from dividerColor when the theme defines no divider
image.
* CPStepper: Discard the decoded buttons before recreating them.
* CPTabView:
* Encode the current tab view items.
* Exclude the tabs from the encoded subviews.
* CPTokenField:
* Discard the decoded scroll view before recreating it.
* Add the decoded tokens to the new document view.
* CPVisualEffectView: Resolve the backdrop filter property only when a DOM is
available.
* CPBoxTest: Verify preservation of the content view, hierarchy and title, and
decoding of an untitled box without warnings.
* CPButtonTest: Verify the initial value of a button.
* CPMapTableTest: Verify preservation of entries through archiving.
* DropInArchiveFixtures: Add populated view fixtures, tree comparison, and
round trip and saved archive helpers.
* DropInArchiveGenerator: Save cib descriptions and view archives, and write no
archive data if any view fails its round trip.
* DropInArchiveTest: Verify new archives, saved archives and reference cibs, and
treat decoding warnings as failures.
* DropInSnapshot:
* Describe the view hierarchy through private views, with state and content.
* Add DropInWithFixedScrollerStyle.
* DropInArchives, DropInCibs: Add saved view archives, cib descriptions and
reference cibs.
David Richardson